Precision Tools

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Precision Tools

Precision Tools Gear Cutting Tools & Broaches Pursuing advanced high-speed technology that is both user and environmentally friendly

Since developing Japan's first broaching machine in the late 1920s, Fujikoshi has developed a variety of tools and machine tools to handle advancements in production systems. Fujikoshi continues to lead the way by developing machining systems that integrate tools and machines. Pursuing advanced high-speed technology that is both user and environmentally friendly

Gear Cutting Tools Gear Cutting Comparison and Types 25 Broaches Design of Broach ools

Guidance NACHI Accuracy of Gear Shaper Cutters 26 Technical Introduction Basic Design and Cutting Method 61

Materials and Coating of Gear Cutting Tools 5 Cutting Condition and Regrinding 27 Hard Broaches 45 Calculation of Pulling Load

62 Gear Cutting T

Disk Type Shaper Cutters Type1Standard Dimensions 28 Broach for MQL 46 Face Angle and Relief Angle 63

Technical Introduction Disk Type Shaper Cutters Type2Standard Dimensions 30 Off-normal Gullet Helical Broach 47 Finished Size of Broaches 64

Hard Hobbing 6 Disk Type Shaper Cutters Type2Standard Dimensions 31 Micro Module Broaching 48 Helical Gear Shaper Cutters

High Speed Dry Hobbing 7 Essential Points and Notice 65 Disk Type Shaper Cutters Type3Standard Dimensions 32 Clutch Keyway Dimensions for Broaching Process High Performance Shaving Cutter 9 Guidance oaches

Deep Counterbore Type Shaper Cutters Standard Dimensions 33 Br Dual Forming Rack 10 Terms of Internal Broaches 49 Pull End 66 Sproket Shaper Cutters Standard Dimensions 34 Terms of Surface Broaches 50

Hobs Nomenclature of Broaching Machine 51 Retrievr End 70

Hob Cutting Action and Nomenclature 11 Shaving Cutters Cycle of Broaching 52

Inclination Angle of Hob and Hobbing Methods 12 Feature and Nomenclature of Shaving Cutters 35 GPA 71

Multi-thread Hob and Short Pitched Hob Design 13 Shaving Methods and Features 36 Internal Broaches

Tooth Profiles of Hob and Sign 14 Shaving Mechanism and Cycle Diagram 37 Work Piece Samples of Internal Broaches 53

NACHI Accuracy of Gear Hobs 15 NACHI Accuracy of Shaving Cutters 38 Involute Spline Broaches 54

Standard Keyways for Hobs 17 Standard Number of Cutter Teeth and Simple Calculation for Cutter Width 39 Push Broaches 55

Cutting Condition and Regrinding 18 Helical Broaches 56

Solid Gear Hobs Standard Dimensions 19 Forming Racks

Fine Pitch Gear Hobs Standard Dimensions 20 Feature and Rolling Principles 40 Surface Broaches

Involute Spline Hobs Tooth Profile 21 Example 41 Work Piece Samples of Surface Broaches 57

Parallel Side Spline Hobs Standard Dimensions 22 Type of Racks and Basic Dimensions 42 Connecting Rod Broaches 58

Roller Chain Sproket Hobs Standard Dimensions 23 Fir Tree Type Broaches 59

Other Types of Gear Cutting Tools Steering Rack Broaches 60

Gear Shaper Cutters Gear Chamfering Tools 43

Feature and Nomenclature of Gear Shaper Cutters 24 Reverse Lead Taper Tooth Forming Tool 44 ndex

Gear Cutting Tools Gear Cutting Comparison and Types 25 Broaches Design of Broach ools

Guidance NACHI Accuracy of Gear Shaper Cutters 26 Technical Introduction Basic Design and Cutting Method 61

Materials and Coating of Gear Cutting Tools 5 Cutting Condition and Regrinding 27 Hard Broaches 45 Calculation of Pulling Load

62 Gear Cutting T

Disk Type Shaper Cutters Type1Standard Dimensions 28 Broach for MQL 46 Face Angle and Relief Angle 63

Technical Introduction Disk Type Shaper Cutters Type2Standard Dimensions 30 Off-normal Gullet Helical Broach 47 Finished Size of Broaches 64

Hard Hobbing 6 Disk Type Shaper Cutters Type2Standard Dimensions 31 Micro Module Broaching 48 Helical Gear Shaper Cutters

Hobs Nomenclature of Broaching Machine 51 Retrievr End 70

Hob Cutting Action and Nomenclature 11 Shaving Cutters Cycle of Broaching 52

Inclination Angle of Hob and Hobbing Methods 12 Feature and Nomenclature of Shaving Cutters 35 GPA 71

Multi-thread Hob and Short Pitched Hob Design 13 Shaving Methods and Features 36 Internal Broaches

Tooth Profiles of Hob and Sign 14 Shaving Mechanism and Cycle Diagram 37 Work Piece Samples of Internal Broaches 53

NACHI Accuracy of Gear Hobs 15 NACHI Accuracy of Shaving Cutters 38 Involute Spline Broaches 54

Standard Keyways for Hobs 17 Standard Number of Cutter Teeth and Simple Calculation for Cutter Width 39 Push Broaches 55

Cutting Condition and Regrinding 18 Helical Broaches 56

Solid Gear Hobs Standard Dimensions 19 Forming Racks

Fine Pitch Gear Hobs Standard Dimensions 20 Feature and Rolling Principles 40 Surface Broaches

Involute Spline Hobs Tooth Profile 21 Example 41 Work Piece Samples of Surface Broaches 57

Parallel Side Spline Hobs Standard Dimensions 22 Type of Racks and Basic Dimensions 42 Connecting Rod Broaches 58

Roller Chain Sproket Hobs Standard Dimensions 23 Fir Tree Type Broaches 59

Other Types of Gear Cutting Tools Steering Rack Broaches 60

Gear Shaper Cutters Gear Chamfering Tools 43

Feature and Nomenclature of Gear Shaper Cutters 24 Reverse Lead Taper Tooth Forming Tool 44 Guidance Technical Introduction

Materials and Coating of Gear Cutting Tools Hobbing of hardened gear is possible ools ools Gear Cutting Tool Material Hard Hobbing� Suitable for high accuracy gear hobbing of the shaft and small module Tool Material Hobs Gear Shaper Cutters Shaving Cutters Forming Racks Features �which was difficult in grinding� Gear Cutting T Gear Cutting T HSS� HSD� ○ Toughness Up� Realized high accuracy by hob and spindle one body tooth profiles grinding� � SKH51� △ △ ○ Toughness Up� Achieved longer tool life by Hyper Dual coat and herd metal of new development SKH55� ○ ○ Standard�

FM34D� ○ Crater Wear Resistance�

FM29A� ○ Wear Resistance�

FM23A� ○ Wear Resistance�

Power HSS FAX31� ○ � Carbide Hob FAX38� ○ ○ △ Heat Resistance�

FAX55� △ △ Wear Resistance

Carbide � ○ oduction Guidance Surface Treatment Nitride� ○ ○ Work Piece TiN� ○ ○ ○

Dual ○ ○ ○ echnical Intr T

� Coating Technology Before After Carbide Hob with shank d Hobbing �

Hardened Steels� Har 50HRC～� CBN Hybrid� TiAIN Multilayered Coating� TiAIN Multifunctional � � Accuracy AG Coat Multilayer Composite Film� Surface � Hardened Steels� Aqua Coat� Modification� 40HRC～ Before Hard Hobbing After Hard Hobbing Before Hard Hobbing After Hard Hobbing TiC Dual Coat� +� GS Hard Coat� Multi-element � � TiN＋TiC TiCN Multilayered � TiCN Multilayered � & Multilayer � Coating� Coating� Hybrid� Film Surface Modification + � TiCN Platina Coat� UG Coat Carbon Steels� SG Coat Rigid Film Profils Error Lead Error Cast Irons

TiN G Coat

'80 '85 '90 '95 '00 '05 Generation Coating Technology Creation Compound・Multilayer・Increase of Film Hybrid Performance NACHI’s coating technology developed from research on physical Performance of Dual Coat Hob vapor deposition (PVD) ion plating. By using the peculiarities of Comparison of Tool life Cutting face ionization acceleration technology, surfaces can be coated with Hard Hob� ： Non Coat� (mm) multiple layers of TiN, TiC and TiCN. � Competitor ： Coat The tool life of coated products are extended to five times those 1500 of uncoated products because the coatings have very good wear 0.3 TiN Coat resistance and solvent resistance. � 1000 It makes high speed and high performance possible and greatly 0.2 Dual Coat 500

reduces total costs. Number of Gears VB Wear

0.1 0 NACHI Hard Hob Competitor KE250 (Kashifuji) 0 1000 2000 3000 4000 Number of Gears Workpiece Hob Specifications Cutting Conditions Hob� ： φ95×L150×φ31.75, 3Thread, RH, 12Number of Teeth, FM34D� Workpieces� ： m1.75×PA17.5°×30T×30RH, Tooth Width18mm, SCr420, 150HB� Cutting Condition：� Cutting Speed V＝150m/min, Feed F＝2.0mm/rev, Cutting Face Module� 2� Outside Dia.� 50mm� Cutting Speed� 2.5mm/rev� Non Coat, Dry Hobbing Number of Teeth� 6� Overall Length� 100� Feed� 2.5mm/rev�

Pressure Angle� 20°� Threads� 1� Cutting Method� Climb Cutting�

Tooth Width� 28mm� Flutes 12 Coolant －�

Material SCM420(60HRC)

5 6 Guidance Technical Introduction

Materials and Coating of Gear Cutting Tools Hobbing of hardened gear is possible ools ools Gear Cutting Tool Material Hard Hobbing� Suitable for high accuracy gear hobbing of the shaft and small module Tool Material Hobs Gear Shaper Cutters Shaving Cutters Forming Racks Features which� was difficult in grinding� Gear Cutting T Gear Cutting T HSS� HSD� ○ Toughness Up� Realized high accuracy by hob and spindle one body tooth profiles grinding� � SKH51� △ △ ○ Toughness Up� Achieved longer tool life by Hyper Dual coat and herd metal of new development SKH55� ○ ○ Standard�

FM34D� ○ Crater Wear Resistance�

FM29A� ○ Wear Resistance�

FM23A� ○ Wear Resistance�

Power HSS FAX31� ○ � Carbide Hob FAX38� ○ ○ △ Heat Resistance�

FAX55� △ △ Wear Resistance

Carbide � ○ oduction Guidance Surface Treatment Nitride� ○ ○ Work Piece TiN� ○ ○ ○

Dual ○ ○ ○ echnical Intr T

� Coating Technology Before After Carbide Hob with shank d Hobbing �

TiN G Coat

reduces total costs. Number of Gears VB Wear

Pressure Angle� 20°� Threads� 1� Cutting Method� Climb Cutting�

Tooth Width� 28mm� Flutes 12 Coolant －�

Material SCM420(60HRC)

5 6 Technical Introduction

Realize High Speed Dry Hobbing of 250m/min Hyper Dual Cut Hob Features ools ools As for the Hyper Dual coating, high speed dry processing more than 200m/min is High Speed Dry Hobbing possible, too.

Both and hobbing are perfomed by one hob.� A long tool life is ensured even in high speed dry hobbing.� Gear Cutting T Gear Cutting T Dual coat improves in wear resistance and the heat-resistant oxidation.� Coherence and tenacity, anti-welding improve, too.� New steel class is good in heat-resistant shock and chipping resistance, wear resistance. (mm/revn) 4

3 Hyper Dual Cut Hob Dual Cut Hob

2 HSS (wet) Feed HSS dry (Dry) oduction oduction Hyper Dual (Dry)

1 Cabide (Dry) Cabide (Wet) echnical Intr echnical Intr T T 0 0 100 200 300 400 Hobbing speed (m/min)

Performance High Speed Dry Hobbing High Speed Dry Hobbing

Comparison of Tool Life (mm) Dry Hobbing 0.3

0.25

0.2 Performance Convention 0.15 Comparison of tool life Wear More than 5 times the tool � 0.1 Hyper Dual life of conventional hobs Method High Speed Dry Hobbing Method Wet High Speed Dry Hobbing 0.05 Cutting Speed 150m/min Cutting speed 120m/min 160m/min 0 0 40 80 120 160 200(m) (Pcs/Reg) 1.8 times the tool life of� Cutting Length 1200 1.5 times the tool life of� competitors conventional products 2.0 1000 2.0 800 1.8 Convention Hyper Dual Hobs

530 1.0 500 1.0 Number of Gears Comparison of Tool Life

Hob Dual Cut Hob Competitor A Competitor B Hob Conventional Dual Cut Hob

Workpiece Hob Specifications Cutting Conditions Workpiece Hob Specifications Cutting Conditions 40m� 40m� 200m� Module 2.5 Outside Dia. 85 Feed Rate 2.5mm/rev Module 2.8 Outside Dia. 105 Feed Rate 2.2mm/rev Cutting Length Cutting Length Cutting Length Number of Teeth 65 Overall Length 200 Cutting Method Climb Cutting Number of Teeth 48 Overall Length 150 Cutting Method Climb Cutting

Tooth Width 30mm Threads 4THD Tooth Width Threads 3THD Cutting Length 210m Workpiece Hob Specifications Cutting Conditions

Material SCR420 Flutes 16 Material SCR420H Flutes 14 Module� 2.87� Outside Dia.� 90mm� Cutting Speed� 250m/min�

Pressure Angle� 15°� Threads� 3� Feed� 2.2mm/rev� Tooth Width� 50mm� Flutes 12 Cutting Method� Climb Cutting�

Material SCM420(180HB) Coolant －�

7 8 Technical Introduction

Realize High Speed Dry Hobbing of 250m/min Hyper Dual Cut Hob Features ools ools As for the Hyper Dual coating, high speed dry processing more than 200m/min is High Speed Dry Hobbing possible, too.

3 Hyper Dual Cut Hob Dual Cut Hob

2 HSS (wet) Feed HSS dry (Dry) oduction oduction Hyper Dual (Dry)

1 Cabide (Dry) Cabide (Wet) echnical Intr echnical Intr T T 0 0 100 200 300 400 Hobbing speed (m/min)

Performance High Speed Dry Hobbing High Speed Dry Hobbing

Comparison of Tool Life (mm) Dry Hobbing 0.3

0.25

530 1.0 500 1.0 Number of Gears Comparison of Tool Life

Hob Dual Cut Hob Competitor A Competitor B Hob Conventional Dual Cut Hob

Tooth Width 30mm Threads 4THD Tooth Width Threads 3THD Cutting Length 210m Workpiece Hob Specifications Cutting Conditions

Material SCR420 Flutes 16 Material SCR420H Flutes 14 Module� 2.87� Outside Dia.� 90mm� Cutting Speed� 250m/min�

Pressure Angle� 15°� Threads� 3� Feed� 2.2mm/rev� Tooth Width� 50mm� Flutes 12 Cutting Method� Climb Cutting�

Material SCM420(180HB) Coolant －�

7 8 Technical Introduction Technical Introduction

Realize High-speed Shaving Clean in MQL Roll Forming ools High Performance Dual Forming Rack ools Shaving Cutter Special surface treatment improves in wear resistance and lubrication, and

Gear Cutting T realize MQL roll forming. Gear Cutting T Realize high speed, high feed shaving by improvement of serration and high Longer tool life in both conditions of conventional oil coolant and MQL roll rigidity design of a shaving cutter. forming. Longer tool life by adoption of shaving cutter materials of new development. Adopt serration form to leave both end land in plunge cut shaving.

Dual Forming Rack

High Performance Shaving Cutter oduction oduction Performance Comparison of Tool Life echnical Intr echnical Intr T Gear Tool Life (pcs) T

Workpiece m2.89, PA23゜, 12T, SPUR Competitor HSS 2500 Cutter 225 Type, 12゜RH, Conventional NACHI 3700

Workpiece m2.25, PA20゜, 27T, SPUR SKH51 1650 Cutter 225 Type, 15゜RH, Conventional NACHI 3500 MQL Roll Forming Conventional Workpiece m2.25, PA17.5゜, 79T、28゜LH Competitor HSS 2800 Cutter 200 Type, 15.5゜RH, Plunge Cut NACHI 5000 Dual Forming Rack

Serration Form to Leave Both End Land Workpiece m1.75, PA17.5゜, 46T, 36゜LH SKH51 2500 Performance Cutter 200 Type, 21゜RH, Plunge Cut NACHI 4200 High Performance Shaving Cutter

Tool Life Comparison PFM-610E Finished Accuracy Work Spec. m1.058×PA30×Ng23 Work Rolling Length 20mm Profile Error Lead Error SCM440（200HB） MQL MQL 12cc/h

100% ool Life

T Chip

0 Oily Water Soluble MQL MQL Dual Forming Rack

Convention Tool Workpiece Cutter Specifications Shaving Conditions

Module 2 Outside Dia. 225 Type Shaving Method Plunge Cut

Number of Teeth 75 Number of Teeth 113 Cutter Rotation 280min-1 MQL Roll Forming Example by Use of NC Roll Forming Machine.

Tooth Width 25mm Helix Angle 13°LH Cutter Feed 0.45mm/min Spline Helix Angle 28°RH Cycle Time 32second DP 24/48 PA 30゜NT26

Suitable Cutter Design by FEM ool Life Spline DP24/48PA30°NT26 Rack Type 24in. T Screw M22P1.5 Machine PFM610E MQL Roll Forming Conventional

Screw

M 22 P 1.5 ool Life

Rack Type 13in. T

Machine PFM330E MQL Roll Forming Conventional

9 10 Technical Introduction Technical Introduction

Realize High-speed Shaving Clean in MQL Roll Forming ools High Performance Dual Forming Rack ools Shaving Cutter Special surface treatment improves in wear resistance and lubrication, and

Dual Forming Rack

High Performance Shaving Cutter oduction oduction Performance Comparison of Tool Life echnical Intr echnical Intr T Gear Tool Life (pcs) T

Workpiece m2.89, PA23゜, 12T, SPUR Competitor HSS 2500 Cutter 225 Type, 12゜RH, Conventional NACHI 3700

Serration Form to Leave Both End Land Workpiece m1.75, PA17.5゜, 46T, 36゜LH SKH51 2500 Performance Cutter 200 Type, 21゜RH, Plunge Cut NACHI 4200 High Performance Shaving Cutter

Tool Life Comparison PFM-610E Finished Accuracy Work Spec. m1.058×PA30×Ng23 Work Rolling Length 20mm Profile Error Lead Error SCM440（200HB） MQL MQL 12cc/h

100% ool Life

T Chip

0 Oily Water Soluble MQL MQL Dual Forming Rack

Convention Tool Workpiece Cutter Specifications Shaving Conditions

Module 2 Outside Dia. 225 Type Shaving Method Plunge Cut

Number of Teeth 75 Number of Teeth 113 Cutter Rotation 280min-1 MQL Roll Forming Example by Use of NC Roll Forming Machine.

Tooth Width 25mm Helix Angle 13°LH Cutter Feed 0.45mm/min Spline Helix Angle 28°RH Cycle Time 32second DP 24/48 PA 30゜NT26

Suitable Cutter Design by FEM ool Life Spline DP24/48PA30°NT26 Rack Type 24in. T Screw M22P1.5 Machine PFM610E MQL Roll Forming Conventional

Screw

M 22 P 1.5 ool Life

Rack Type 13in. T

Machine PFM330E MQL Roll Forming Conventional

9 10 Hobs Hobs

Features of Gear Cutting Hobs Inclination Angle of Hob ools ools Gear Helical Gear Hob is the cutting tool which has the rack cutting teeth on its body as the Spur Gear Hob shape of a screw. � Right Helix Left Helix The basic rack (rack cutting teeth) projects the rotating hob which has teeth β

Gear Cutting T β Gear Cutting T in a screw pattern to generate the gear. � γ γ Work piece is rotated so that it may gear with this basic rack, and feeding a γ Hob hob in the lead direction generates the gear. β＋γ γ Right β－γ

Gear β β Handed Reverse Handed Tooth Lead Angle of Hob Hob Cutting Action β γ β γ Hob γ Hobs Hob Hobs β＋γ γ β－γ Hob Left

Gear β β Basic Rack Reverse Handed Handed e β： Helix Angle of Gear� Gear Gear Axial Feed Generating Chart γ： Tooth Lead Angle of Hob

Hobbing Methods and Comparison

Hob Nomenclature Conventional Hobbing Climb Hobbing

Cam Rise Feed Feed Cutting Face Right Edge Thread Helix Hob Hob Hob Cutting Action and Nomenclatur Gear Gear Keyway Flute Depth Top Edge Left Edge Hab Flute Hub Face Inclination Angle of Hob and Hobbing Methods

eter Hobbing Comventional Climb Bore Diam Elements Spur Helical Spur Helical

Hub Diameter Flank Wear of Hob × ○ Outside Diameter Pitch Circle Diameter Surface Roughness ○ × Tooth Chip Removal ○ × × ○ Lead Angle Bite of Chip × ○ Length of Teeth Hub Length Overall Length Common Design

In case of the gears with the same module and pressure angle, it Normal Section of Hob Tooth Profile Chamfer of Gear Semi-topping Tooth Profile can be used with a common designed hob, even if a number of

Pitch teeth and helix angle are differ. � Pressure Angle However, the amount of the chamfer changes depending on the Large Tooth Thickness number of teeth a semi-topping hob has. Number of Teeth Gear 70 Straight� Whole Depth of Cut Tip Radius Portion Addendum 40 Chamfer 25 Chamfer Whole Depth 20 Hob Pitch Line Small Tip Relief Modification （－）� 0 （＋）� Shift Coefficient

11 12 Hobs Hobs

Gear β β Handed Reverse Handed Tooth Lead Angle of Hob Hob Cutting Action β γ β γ Hob γ Hobs Hob Hobs β＋γ γ β－γ Hob Left

Gear β β Basic Rack Reverse Handed Handed e β： Helix Angle of Gear� Gear Gear Axial Feed Generating Chart γ： Tooth Lead Angle of Hob

Hobbing Methods and Comparison

Hob Nomenclature Conventional Hobbing Climb Hobbing

eter Hobbing Comventional Climb Bore Diam Elements Spur Helical Spur Helical

11 12 Hobs Hobs

Gear Generation Line Chart of Multi-thread Gear Hob Tooth Profiles of Hobs ools ools Single Thread Hob 3threads Hob 5threads Hob

D+F Gear Cutting T Gear Cutting T D+F D+F

Semi-topping Protuberance Semi-topping and Protuberance

Finishing Use� S-TOP� －� －�

Pre-shaving Use� PS� PP� PSP�

Pre-grinding Use PGS PGP PGSP Features of Multi-thread Gear Hob Hobs Hobs Merits Demerits

Processing Efficiency Improves Tooth profile error is large D+F D+F D+F Because chip thickens, 1.Chipping of tooth edge is effective� Use of high rigidity hobbing machine 2.Flank wear is controlled

Modified Tooth Crest Topping Topping and Semi-topping

Short Pitched Hob Design Finishing Use� TOP Pre-shaving Use� Applications of short pitch hobs � 1. When the tip radius of hob is too small by the original pressure angle due to narrow space width on root diameter of gear. � Pre-grinding Use 2. When the space width on bottom of hob teeth is too narrow for manufacturing hob by the original pressure angle. � D+F：Whole Depth of Cut ofiles of Hobs and Sign 3. If change chip flow, and take cutting edge chipping measures. ooth Pr Tooth Profile with Protuberance T Mesh with Normal Hob ead Hob and Short Pitched Design Tooth Profile Hobbing 20°�

Multi-thr � Finish Tooth Profile Pb Outer Diameter

Hob Hobs Reference Circle

Gear Base Circle Work Gear Reference Circle Base Circle

Mesh with Short Pitched Hob Protuberance

15°� � PbH Outer Diameter

Hob

Reference Circle Gear Cutting Pitch Circle

Base Circle Reference Circle Base Circle Cutting Pitch Circle

13 14 Hobs Hobs

Gear Generation Line Chart of Multi-thread Gear Hob Tooth Profiles of Hobs ools ools Single Thread Hob 3threads Hob 5threads Hob

D+F Gear Cutting T Gear Cutting T D+F D+F

Semi-topping Protuberance Semi-topping and Protuberance

Finishing Use� S-TOP� －� －�

Pre-shaving Use� PS� PP� PSP�

Pre-grinding Use PGS PGP PGSP Features of Multi-thread Gear Hob Hobs Hobs Merits Demerits

Processing Efficiency Improves Tooth profile error is large D+F D+F D+F Because chip thickens, 1.Chipping of tooth edge is effective� Use of high rigidity hobbing machine 2.Flank wear is controlled

Modified Tooth Crest Topping Topping and Semi-topping

Multi-thr � Finish Tooth Profile Pb Outer Diameter

Hob Hobs Reference Circle

Gear Base Circle Work Gear Reference Circle Base Circle

Mesh with Short Pitched Hob Protuberance

15°� � PbH Outer Diameter

Hob

Reference Circle Gear Cutting Pitch Circle

Base Circle Reference Circle Base Circle Cutting Pitch Circle

13 14 Hobs Hobs

NACHI Accuracy of Gear Hobs ools Unit : μm Unit : μm ools Tolerance Tolerance Bore Diameter(mm) Hob Elements Grade Hob Elements Dimension(mm) 8� 10� 13� 22� –� 27� 32� 40� 50� 60� –� 80�

Gear Cutting T –� –� –� 22.225 25.4 26.988 31.75 38.1 50.8 63.5 76.2 –� D or L≦30 30＜D or L≦120 120＜D or L≦400 Gear Cutting T AA� 0～+4� 0～+5� Bore Diameter 0～+9 0～+11 0～+13 Outside Diameter & Overall Length ±500 ±800 ±1200 A 0～+6 0～+8 Unit : μm

Tolerance� Tolerance� Hob Elements Grade Module Module 0.1≦m≦0.25 0.25＜m≦0.6 0.6＜m＜1 1≦m≦1.6 1.6＜m≦2.5 2.5＜m≦44 ＜m≦6.3 6.3＜m≦10 10＜m≦16 16＜m≦25 AA� 5� 5� 5� Hub Diameter 5� � 5� � 5� � �6� �6� –� � –� � A� 5� 5� 5� 5� � �5� �6� �8� 10� � 12� � 16� � AA� 3� 3� 3� Runout Hub Face 3� � �3� �4� �5� �5� –� � –� � A� 5� 5� 5� 5� � �5� �5� �6� �8� 10� � 12� � AA� 8� 10� 12� 16� � 16� � 20� � 25� � 32� � –� � –� � Hobs Hobs Outside Diameter A� 12� 16� 20� 25� � 25� � 25� � 32� � 40� � 50� � 63� � AA� 10� 10� 12� Ajacent Flute Spacing 14� � 16� � 16� � 19� � 24� � –� � –� � A� 12� 12� 16� 22� � 25� � 25� � 30� � 38� � 50� � 70� � AA� 19� 19� 22� Accumulative Flute Spacing 26� � 30� � 30� � 36� � 45� � –� � –� � Flute A� 25� 25� 32� 42� � 48� � 48� � 55� � 70� � 96� � 130� � AA� 6� 6� 8� Radial Alignment of Flutes 10� � 12� � 16� � 20� � 25� � –� � –� � A� 10� 10� 12� 16� � 20� � 25� � 32� � 40� � 50� � 63� � Overall� Length(mm) � � � Lead Over Cutting Face Width(±) L≦� 35� 35＜L� ≦� 50 50＜L≦� � 100 100＜L� ≦� 150 150＜L� ≦� 200 L＞200� � � � Lead � Over Cutting Face� Width � � 25� � 40� � 60� � 80� � 100� � 120� � � � AA� � � 4� Adjacent Error – – 5� � �5� �6� �8� 10� � –� � –� � A� � � 8� 8� � �8� 10� � 12� � 16� � 20� � 25� � AA� � � 7� 1 Thread – – 7� � �8� 10� � 12� � 16� � –� � –� � A� � � 11� 11� � 12� � 16� � 20� � 25� � 32� � 40� � AA� � � � 2 Threads – – – 8� � �8� 11� � 14� � 18� � –� � –� � A� � � � 12� � 14� � 18� � 22� � 28� � 36� � � � AA� � � � 8� In Any One Turn of Helix 3 Threads – – – � 10� � 12� � 16� � –� � –� � –� � A� � � � Lead 12� � 16� � 20� � 25� � 32� � � � � � AA� NACHI Accuracy of Gear Hobs 4 Threads –� –� –� 9� � 11� � 14� � –� � –� � –� � –� � NACHI Accuracy of Gear Hobs A� � � � 14� � 18� � 22� � 28� � � � � � � � AA� � � � 5 Threads – – – 9� � 11� � 14� � –� � –� � –� � –� � A� � � � 14� � 18� � 22� � 28� � � � � � � � AA� � � � 1 Thread – – – 12� � 12� � 16� � 20� � 25� � –� � –� � A� � � � 20� 63� In Any Three Turn of Helix � 20� � 25� � 32� � 40� � 50� � � AA� � � � 12� � 14� � 18� � 22� � 28� –� � 2 Threads – – – � –� � A� � � � 18� � 22� � 28� � 36� � 45� � 56� � � � AA� 4� 4� 5� 5� Single Pitch Error(±) � �6� �8� 10� � 12� � –� � –� � A� 6� 6� 8� 8� � 10� � 12� � 16� � 20� � 25� � 32� � AA� � � � 5� � �6� �8� 10� � 12� 16� � 2 Threads – – – � � – � A� � � � 8� � 10� � 12� � 16� � 20� � 25� � � � AA� � � � 6� � �7� �8� 11� � 14� � � 3 Threads – – – � – � – � A� � � � Adjacent Error 9� � 11� � 14� � 18� � 22� � � � � � AA� � � � 6� � �8� 10� � –� � � � � 4 Threads – – – – � – � – � A� � � � 10� � 12� � 16� � 20� � � � � � � � AA� � � � 6� � �8� 10� � –� � � � � 5 Threads – – – – � – � – � Cutting Face A� � � � 10� � 12� � 15� � 20� � � � � � � � AA� 8� 8� 10� 10� � 10� � 12� � 16� � 20� � –� � –� � 1 Thread A� 12� 12� 16� 16� � 16� � 20� � 25� � 32� � 40� � 50� � AA� � � � 11� � 11� � 14� � 18� � –� � –� � � 2 Threads – – – – � A� � � � 18� � 18� � 22� � 28� � 36� � 45� � � � AA� 11� � 11� � 14� � 18� � –� � Three Pitch Error(±) 3 Threads –� –� –� –� � –� � A� � � � 18� � 18� � 22� � 28� � 36� � � � � � AA� � � � 14� � 14� � 18� � –� � � � � 4 Threads – – – – � – � – � A� � � � 22� � 22� � 28� � 36� � � � � � � � AA� � � � 14� � 14� � 18� � –� � � � � � 5 Threads – – – – – � – � A� � � � 22� � 22� � 28� � 36� � � � � � � � AA� � � � 5� � �5� �6� �7� �9� � � Adjacent Error – – – – � – � A� � � � –� � –� � –� � –� � –� � � � � � Action AA� � � � 11� � 11� � 13� � 16� � 20� � � � Length of Action – – – – � – � A� � � � –� � –� � –� � –� � –� � � � � � AA� 2� 3� 4� 5� � 6� � 8� � 10� � 14� � 22� � 36� � Tooth Profile Error A� 3� 5� 6� 8� 10� 12� 16� 22� 36� � 56� � Profile AA� 16� 16� 16� 20� 20� 25� 25� 32� –� � –� � Tooth Thickness(－) A 20 20 20 20 20 25 32 40 50� 63� Remarks : Lead Error is applied in pressure angle of less than 35°, and tolerance of pressure angle of over 35°is 1.5 time of table value. � Profile Error is applied in pressure angle of less than 35°, and tolerance of pressure angle of over 35°is 1.5 time of table value.

15 16 Hobs Hobs

Standard Keyways for Hobs Cutting Condition (In case of m2~2.5) ools ools

R1 Cutting Condition F H r Elements Note2 Cutting SpeedNote1� Axial Feed (mm/rev) Work Material

Gear Cutting T （m/min）� Gear Cutting T 45°� Threads� 1～2 Threads� 3～5 S45C以上� 40～（70）〔100〕� 1.5～2.5� 1.0～2.0� D C d E F SCM440� 50～（80）〔100〕� 2.0～3.0� 1.5～2.5� r Cutting Speed and� SCM420� Axial Feed 60～（110）〔140〕� 2.5～3.5� 2.0～3.0� SCr 420� � � �

FCD 70� 40～（50）� 2.0～3.0� 1.5～2.5�

Radial Feed � Please avoid radial� feed not to promote the cutter� damage. � Type of Axial Keyways (JIS B 4201-1998) � Hob Rotation� : Q� Q -1 Type A Unit : mm Type B Unit� : mm Work Rotation No. of Thread� : TH Work Rotation＝TH× (min )� Z Hobs Hobs Corner� Corner� � No. of Teeth� : Z Bore Diameter� Height of Keyway� Width of Keyway� Radius� Bore Diameter� Height of Keyway� Width of Keyway� Radius� D E F D E F (ref) (ref)� Depth of Cut By work specification Shifting 0.1m～0.5m（m : Module）� Size Size Tolerance Size Tolerance � r Size Size Tolerance Size Tolerance � r Note1 （）; in the case of coating hob. 〔〕; in the case of� dual coating.� 10� 11.5� 12.7� 14.2� 2.39� 0.5� ＋0.160� Note2 Feed is different from a processing aim (finishing, pre-shaving) by necessary surface roughness, accuracy. 3� 0.4� 13� 14.6� � ＋0.060 � 15.875� 17.7� � � ＋0.31� 16� 17.7� 4� 0.6� 19.05� 20.9� 3.18� 0.8� ＋0.13� ＋0.25� ＋0.19� 19� 21.1� 5� � 22.225� 24.1� � � ＋0.07� � 0 1 Regrinding � 22� 24.1� 6� � 26.988� 29.4� 6.35� 1.2� ＋0.25� Damage to the cutting edge of a hob is generally separated into flank wear ＋0.32� Radial Flank 27� 29.8� 7� � 31.75� 35.2� 0 7.92� � Crator Wear d Keyways for Hobs ＋0.14� and crater wear depending on the location of the wear. The most ＋0.23� 32� 34.8� 8� 1.2� 38.1� 42.3� 9.52� � economical way for regrinding is when the flank wear is approx. 0.2 mm ＋0.08� � 1.6

Standar wide or if the crater wear is approx. 0.1 mm deep. We recommend 40� 43.5� 10� � � 50.8� 55.8� 12.7 � ＋0.89� � regrinding to a depth of 0.1 mm + existing wear. It is also important to

＋0.25� Side Flank Cutting Condition and Regrinding 50� 53.5� 12� � 63.5� 69.4� 15.87� � choose a sharp grinding tool and to be careful that the heat from grinding Cutting Face ＋0.3� 1.6 � 0 ＋0.275� does not dull the teeth and that grinding cracks do not occur. Specifically 60� 64.2� 14� � 76.2 82.9 19.05 ＋ 2.4 0.095� with high alloy powder high-speed steel, avoid creep feed grinding, use Flank Wear � 2 80 85.5 18 light grinding stock or high-speed feed grinding.

Type of Clutch Keyways Example Unit : mm Tool Material Wheel Dia. Wheel Rotation Feed Depth of Cut Cutting Oil Width of Keyway� Depth of Keyway� Bore Diameter d Roughing� 0.10～0.15mm� F H Corner� HSS 200mm� 2200～3000min-1� 300～600mm/min� Radius(ref)� R1 C Eccentricity (1) Finishing� 0.02～0.05mm� � � � Non-water Soluble Oil� Type A Type B Size Tolerance Size Tolerance� r (H12) Roughing� 0.05～0.10mm� � Powder HSS 200mm� 2200～3000min-1 300～600mm/min ＋0.12� Finishing 0.01～0.02mm� 10� � 6.4� 4.5� 0.030 � 0 0.5 � � 13� 12.7� 5 � 1 Wheel Regrinding points � 8.4� A guideline for the economical point for regrinding is when the flank wear is approximately 16� 15.875� � 5.6� Abrasive� CBN (Resinoid)� 0.2 mm wide. � Grain Size� 100� Be careful of grinding burn with dressing grinding wheel and keeping it very sharp. 19� 19.05� � 0.6 ＋0.043� 10.4� 6.3� Concentration� 100� 0 22� 22.225� � � 1.2 7� ＋0.150� Grade R 0 27� 26.988� 12.4� 7.0� 8� 0.8 32� 31.75� 14.4� 8.0� 1.6 9� 0.040

40� 38.1� 16.4� 9.0� 10�

50� 50.8� 18.4� 10.0� 2.0 11� 1.0

60� 63.5� 20.5� ＋0.052� 11.2� 12� 0 ＋0.180� 0.050 0 80 76.2 24.5 14.0 2.5 15 1.2

(1) This shows the tolerance between the bore diameter axis and the center line of the clutch keyway.

17 18 Hobs Hobs

Standard Keyways for Hobs Cutting Condition (In case of m2~2.5) ools ools

R1 Cutting Condition F H r Elements Note2 Cutting SpeedNote1� Axial Feed (mm/rev) Work Material

FCD 70� 40～（50）� 2.0～3.0� 1.5～2.5�

40� 38.1� 16.4� 9.0� 10�

50� 50.8� 18.4� 10.0� 2.0 11� 1.0

60� 63.5� 20.5� ＋0.052� 11.2� 12� 0 ＋0.180� 0.050 0 80 76.2 24.5 14.0 2.5 15 1.2

(1) This shows the tolerance between the bore diameter axis and the center line of the clutch keyway.

17 18 Hobs Hobs

Solid Gear Hobs� Fine Pitch Gear Hobs� ools Standard Dimensions Standard Dimensions ools

This table shows standard hob dimensions suited for gear cutting.� This table shows standard hob dimensions suitable in manufacture of small Gear Cutting T NACHI can also manufacture various sizes of solid hobs. gears such as watch. � Gear Cutting T There are two types of Non-Topping and Topping.

Unit : mm Bore Diameter (d) 8 Type Unit : mm 10 Type Unit : mm Module� Diametral Pitch� Outside Dia.� Overall Length� No. of Flutes� Module� Diametral� Outside� Overall� Bore� No. of� m DP D L Type A Type B N Module� Diametral� Outside� Overall� Bore� No. of� � Pitch� Dia.� Length� Diameter� Flutes� � Pitch� Dia.� Length� Diameter� Flutes� N m DP D L d N � 26� 50� 50� � � � m DP D L d Hobs Hobs 0.1� � 24� 8� � � 0.2� � 32� 12� � � 1� 24� 50� 50� � � � 0.15� � 24� 8� � � 0.25� 96� 32� 12� � � � 22� 50� 50� � � � 0.2� � 24� 8� � � 0.3� � 32� 12� � � 1.25� 20� 50� 50� � � 12� 0.25� 96� 24� 8� � � 0.35� 72� 32� 12� � � � 18� 55� 55� � � � 0.3� � 24� 10� � � 0.4� 64� 32� 15� � � 0.35� 72� 24� 10� � � 0.45� 56� 32� 15� � � 1.5� 16� 55� 55� 22� 22.225� � 0.4� 64� 24� 10� � � 0.5� 48� 32� 20� � � 1.75� 14� 55� 55� � � � 0.45� 56� 24� 10� � � 0.55� � 32� 20� � � 2� 12� 60� 60� � � � 0.5� 48� 24� 10� � � 0.6� 44� 32� 20� � 12� 0.55� � 24� 10� 0.65� 40� 32� 20� � � 2.25� 11� 60� 60� � � � 8 12 0.6� 44� 24� 12� 0.7� 36� 32� 20� � � 2.5� 10� 65� 65� � � � 0.65� 40� 24� 0.75� � 32� 20� 10 � d Dimensions 12� d Dimensions 2.75� 9� 65� 65� � � � 0.7� 36� 24� 12� 0.8� 32� 32� 20� � 3� 8� 70� 70� � � � 0.75� � 24� 12� � 30� 32� 20� � 0.8� 32� 24� 12� 0.9� 28� 32� 20� � 3.25� � 70� 70� � � 10� � 30� 24� 12� � 26� 32� 20� � 3.5� � 75� 75� � � � 0.9� 28� 24� 12� 1� � 32� 20� � 3.75� 7� 80� 75� 27� 26.988� � � 26� 24� 12� � 24� 40� 25� � 1 � 24 12 � 22� 40� 25� � 4� 6� 85� 80� � � � � Solid Gear Hobs Standar 1.25� 20� 40� 25� 1� 10 4.5� 5� 2� 90� 85� � � � 1.5� � 40� 25�

� Fine Pitch Gear Hobs Standar 5� 5� � 95� 90� � � � 1.75� 40� 30�

1� 2 40 30 5.5� 4� 2� 100� 95� � � � � � 13 Type Unit : mm 6� � 105� 100� � � � Module� Diametral� Outside� Overall� Bore� No. of� 6.5� 4� 110� 110� � � � � Pitch� Dia.� Length� Diameter� Flutes� 1� m DP D L d N 7� 3� 2� 115� 115� 32� 31.75� � � 8� 3� � 120� 130� � � 9� 0.2� � 32� 12� � � 0.25� 96� 32� 12� � � 3 9� 2� 4� 125� 145� � � � 0.3� � 32� 12� � � 1� � 10� 2� 2� 130� 160� � � � 0.35� 72� 32� 12� � � � 1� � 11� 2� 4� 140� 175� � � � 0.4� 64� 32� 15� � � � � 0.45� 56� 32� 15� � � 12� � 150� 190� � � � � � 0.5� 48� 32� 20� � � � 2� 170� 200� � 40� 38.1� 0.55� � 32� 20� � � 14� � 170� 210� � 0.6� 44� 32� 20� � 12� � � 3� 0.65� 40� 32� 20� � � � 1� 4� 190� 220� � � � � � 0.7� 36� 32� 20� � � 1� � 16� 1� 2� 190� 230� � 0.75� � 32� 20� 13 � � � � 8 18� � 210� 250� 0.8� 32� 32� 20� � � � 1� 20� 1� 4� 220� 270� � 30� 32� 20� � � � 50 50.8 0.9� 28� 32� 20� � 22� � 230� 300� � 26� 32� 20� � 25 1 250 320 1� � 32� 20� � � 24� 40� 25� � � 22� 40� 25� � � 1.25� 20� 40� 25� 10 1.5� � 40� 25� 1.75� 40� 30� 2 40 30

19 20 Hobs Hobs

Solid Gear Hobs� Fine Pitch Gear Hobs� ools Standard Dimensions Standard Dimensions ools

Unit : mm Bore Diameter (d) 8 Type Unit : mm 10 Type Unit : mm Module� Diametral Pitch� Outside Dia.� Overall Length� No. of Flutes� Module� Diametral� Outside� Overall� Bore� No. of� m DP D L Type A Type B N Module� Diametral� Outside� Overall� Bore� No. of� � Pitch� Dia.� Length� Diameter� Flutes� � Pitch� Dia.� Length� Diameter� Flutes� N m DP D L d N � 26� 50� 50� � � � m DP D L d Hobs Hobs 0.1� � 24� 8� � � 0.2� � 32� 12� � � 1� 24� 50� 50� � � � 0.15� � 24� 8� � � 0.25� 96� 32� 12� � � � 22� 50� 50� � � � 0.2� � 24� 8� � � 0.3� � 32� 12� � � 1.25� 20� 50� 50� � � 12� 0.25� 96� 24� 8� � � 0.35� 72� 32� 12� � � � 18� 55� 55� � � � 0.3� � 24� 10� � � 0.4� 64� 32� 15� � � 0.35� 72� 24� 10� � � 0.45� 56� 32� 15� � � 1.5� 16� 55� 55� 22� 22.225� � 0.4� 64� 24� 10� � � 0.5� 48� 32� 20� � � 1.75� 14� 55� 55� � � � 0.45� 56� 24� 10� � � 0.55� � 32� 20� � � 2� 12� 60� 60� � � � 0.5� 48� 24� 10� � � 0.6� 44� 32� 20� � 12� 0.55� 24� 10� 0.65� 40� 32� 20� � � 2.25� 11� 60� 60� � � � � 8 12 0.6� 44� 24� 12� 0.7� 36� 32� 20� � � 2.5� 10� 65� 65� � � � 0.65� 24� 0.75� � 32� 20� 10 � d Dimensions 40� 12� d Dimensions 2.75� 9� 65� 65� � � � 0.7� 36� 24� 12� 0.8� 32� 32� 20� � 3� 8� 70� 70� � � � 0.75� � 24� 12� � 30� 32� 20� � 0.8� 32� 24� 12� 0.9� 28� 32� 20� � 3.25� � 70� 70� � � 10� � 30� 24� 12� � 26� 32� 20� � 3.5� � 75� 75� � � � 0.9� 28� 24� 12� 1� � 32� 20� � 3.75� 7� 80� 75� 27� 26.988� � � 26� 24� 12� � 24� 40� 25� � 1 � 24 12 � 22� 40� 25� � 4� 6� 85� 80� � � � � Solid Gear Hobs Standar 1.25� 20� 40� 25� 1� 10 4.5� 5� 2� 90� 85� � � � 1.5� � 40� 25�

� Fine Pitch Gear Hobs Standar 5� 5� � 95� 90� � � � 1.75� 40� 30�

19 20 Hobs Hobs

Involute Spline Hobs Tooth Profile Parallel Side Spline Hobs� ools ools This table shows Hob Tooth Profile of involute spline and serration. Standard Dimensions

This table shows standard hob dimensions to manufacture parallel side

Gear Cutting T spline. Gear Cutting T

Involute Spline Hob Tooth Profile α t α� t � S S

r hk he r hk Parallel Side Spline Generating Curve he

Flat Root Fillet Root B

Involute Serration Hob Tooth Profile Hobs Hobs

t α � D S hk

r he d

ofile Unit : mm Hob Dimensions Spline Dimensions (JIS B 1601-1996 J Type)

ooth Pr Involute Spline Hobs Tooth Profile Bore Dia.� Type 1 Type 2 d Dimensions Unit : mm D Size Outside Dia.� OAL� Standard B1603-1995� ANSI B92.2-1980� D2001-1959 DIN 5480-1964 D L No. of� Minor� Major� Width� Chamfer� No. of� Minor� Major� Width� Chamfer� ANSI B92.2M-1980 (Metric) (Inch) Type A Type B Spline� Dia.� Dia.� � � Spline� Dia.� Dia.� � � N d D B f N d D B f Fillet Root Flat Root Flat Root Fillet Root Flat Root Flat Root 11� � � � 11� 14� 3� Involute Spline Hobs T Elements DP≧16 DP≦12 13� 60 60 22 22.225 � � � 13� 16� 3.5� 16� � – � � 16� 20� 4� Module/DP mm DP/DPS m 0.3 18� � � � 18� 22� 5� 21� � � � 21� 25� 5�

α ゜゜゜゜ Parallel Side Spline Hobs Standar Pressure Angle ( ) 20 � 30 � 30 � 30 � 23� 23� 26� 6� 23� 28� 6� 26� 26� 30� 6� 26� 32� 6� Addendum (hk) 1.0m 0.75m 0.9m 1.35/DPS 2.0/DPS 1.8/DPS 0.6m 28� 75 75 27 26.988 28� 32� 7� 28� 34� 7� 32� 32� 36� 8� 0.3 32� 38� 8� 0.4 Whole Depth of Cut 1.2m 1.25m 1.4m 2.35/DPS 3.0/DPS 2.8/DPS 1.2m 36� 36� 40� 8� 6 36� 42� 8� 42� 42� 46� 10� 42� 48� 10� Tip Radius (r) 0.3m 0.2m 0.4m 0.075/DPS 0.36/DPS 0.46/DPS 0.16m 46� 6 46� 50� 12� 46� 54� 12� 95 90 32 31.75 52� 52� 58� 14� 52� 60� 14� Normal Pitch (t) πm πm 25.4π/DP πm 56� 56� 62� 14� 56� 65� 14� 115 115 32 31.75 62� 62� 68� 16� 62� 72� 16� 0.5 Tooth Thickness (s) t/2 t/2 t/2 t/2 72� 72� 78� 72� 82� 18� 135 175 18� 82� 40 38.1 82� 88� 20� 82� 92� 20� 0.4 92� 145 190 92� 98� 22� 92� 102� 22� 32� 32� 36� 6� 32� 38� 6� 36� 75 75 27 26.988 36� 40� 7� 36� 42� 7� 0.4 Involute Serration Hob Tooth Profile 42� 42� 46� 8� 42� 48� 8� 46� 8 46� 50� 9� 8 46� 54� 9� Unit : mm 52� 52� 58� 10� 52� 60� 10� Standard B1603-1995� ANSI B92.2-1980� 56� 95 90 32 31.75 56� 62� 10� 56� 65� 10� D1602-1960 62� 62� 68� 12� 62� 72� 12� Elements ANSI B92.2M (Metric) (Inch) 72� 72� 78� 12� 72� 82� 12� 0.5 0.5 Module/DP mm DP/DPS 82� 82� 88� 12� 82� 92� 12� 92� 10 92� 98� 14� 10 92� 102� 14� 115 115 32 31.75 Pressure Angle (α) 45゜� 37.5゜� 45゜� 37.5゜� 45゜� 102� 102� 108� 16� 102� 112� 16� 112 112 120 18 112 125 18 Addendum (hk)� 0.5m 0.7m 0.6m 1.53/DPS 1.1/DPS � Whole Depth of Cut 1.0m 1.15m 1.0m 2.53/DPS 2.1/DPS With Semi-topping With Lugs With Full Radius Tip Radius (r) 0.4476m 0.3m 0.25m 0.4/DP 0.327/DP

Normal Pitch (t) πm πm 25.4π/DP

Tooth Thickness (s) 1.3708m t/2 t/2 1.3708/DP Hob Hob Hob

21 22 Hobs Hobs

Involute Spline Hobs Tooth Profile Parallel Side Spline Hobs� ools ools This table shows Hob Tooth Profile of involute spline and serration. Standard Dimensions

This table shows standard hob dimensions to manufacture parallel side

Gear Cutting T spline. Gear Cutting T

Involute Spline Hob Tooth Profile α t α� t � S S

r hk he r hk Parallel Side Spline Generating Curve he

Flat Root Fillet Root B

Involute Serration Hob Tooth Profile Hobs Hobs t α � D S hk r he d

ofile Unit : mm Hob Dimensions Spline Dimensions (JIS B 1601-1996 J Type) ooth Pr Involute Spline Hobs Tooth Profile Bore Dia.� Type 1 Type 2 d Dimensions Unit : mm D Size Outside Dia.� OAL� Standard B1603-1995� ANSI B92.2-1980� D2001-1959 DIN 5480-1964 D L No. of� Minor� Major� Width� Chamfer� No. of� Minor� Major� Width� Chamfer� ANSI B92.2M-1980 (Metric) (Inch) Type A Type B Spline� Dia.� Dia.� � � Spline� Dia.� Dia.� � � N d D B f N d D B f Fillet Root Flat Root Flat Root Fillet Root Flat Root Flat Root 11� � � � 11� 14� 3� Involute Spline Hobs T Elements DP≧16 DP≦12 13� 60 60 22 22.225 � � � 13� 16� 3.5� 16� � – � � 16� 20� 4� Module/DP mm DP/DPS m 0.3 18� � � � 18� 22� 5� 21� � � � 21� 25� 5�

Normal Pitch (t) πm πm 25.4π/DP

Tooth Thickness (s) 1.3708m t/2 t/2 1.3708/DP Hob Hob Hob

21 22 Hobs Gear Shaper Cutters

Roller Chain Sproket Hobs� Gear Shaper Cutters ools ools Standard Dimensions Gear shaper cutter is the gear cutting tool for generating the gear teeth. � The both gear and cutter are mounted on the gear shaper machine. Then a This hob is used to manufacture sproket wheels according to ANSI B29.1, symmetrical motion of rotation and reciprocating generates the gear teeth. �

Gear Cutting T ASA B29.1, DIN 8196, JIS B 1802, BS 228, and this table shows standard 1. Generating internal gears and shoulder gears � Gear Cutting T hob dimensions. 2. Generating omitted teeth, combined one or variable tooth thickness.

Gear Shaper Cutters

Basic Rack Tooth Profile (JIS B 1802 S Type) Hobs CP Gear Shaper Cutter CP� CP� 2 2 Tip Q W Gear Shaper Cutters � Gear 90˚ G

2 R

Ds � Ds

H J � s

35˚� C A 17.5˚ F Pich Line E Root d Dimension Virtual Gear

Unit : mm e of Gear Shaper Cutters Hob Dimensions

oket Hobs Standar Gear Shaper Cutters Nomenclature Chain Pitch� Roller Dia.� Bore Dia.� (CP) (RD) Outside Dia.� Overall Length� d No. of Flutes� D L N

Type A Type B e and Nomenclatur Addendum Roller Chain Spr Pitch Circle Datum Face 6.35� 3.3� 60� 60� Whole Depth Featur � � � 5.08� 22� 22.225� 12� Dedendum Radial Relief� 9.525� 65� 65� 6.35� � � � Tooth Space Tip Chamfer Side Relief Angle Angle � � � Chamfer 7.77� � � � 12.7� 75� 75� � � � � 7.94� � � 27� 26.988� 10� Right Tooth � 15.875� 10.16� 85� 90� Flank Tooth Flank � � � OAL 19.05� 11.91� 90� 105� � � � 25.4� 15.875� 110� 125� � � � Inner Face � e Diameter � Left Tooth � Bor 31.75� 19.05� 120� 140� 32� 31.75� � Rake Angle Counter Bore Diameter � Flank � 38.1� 22.225� 130� 170� � � � � Pitch Circle Diameter 44.45� 160� 190� � � � 25.4� � 9 50.8� 28.575� 170� 210� 40� 38.1� Outside Diameter eb Thickness 57.15� 35.72� 190� 240� � � e Depth W � � Cutting Face 63.5� 39.688� 210� 260� 50 50.8 76.2 47.625 240 310 Counter Bor

Face Angle

Ds Downhill Side Sharpening Angle Uphill Side φ Helix Angle

JIS B 1802 Type S� JIS B 1802 Type U� DIN 8196 φ：24°� Helical Gear Shaper Cutter ASA B29.1 Type 2� ASA B29.1 Type 1 BS 228 φ：25°� ANSI B29.1

23 24 Hobs Gear Shaper Cutters

Gear Shaper Cutters

Basic Rack Tooth Profile (JIS B 1802 S Type) Hobs CP Gear Shaper Cutter CP� CP� 2 2 Tip Q W Gear Shaper Cutters � Gear 90˚ G

2 R

Ds � Ds

H J � s

35˚� C A 17.5˚ F Pich Line E Root d Dimension Virtual Gear

Unit : mm e of Gear Shaper Cutters Hob Dimensions oket Hobs Standar Gear Shaper Cutters Nomenclature Chain Pitch� Roller Dia.� Bore Dia.� (CP) (RD) Outside Dia.� Overall Length� d No. of Flutes� D L N

Face Angle

Ds Downhill Side Sharpening Angle Uphill Side φ Helix Angle

JIS B 1802 Type S� JIS B 1802 Type U� DIN 8196 φ：24°� Helical Gear Shaper Cutter ASA B29.1 Type 2� ASA B29.1 Type 1 BS 228 φ：25°� ANSI B29.1

23 24 Gear Shaper Cutters Gear Shaper Cutters

Gear Cutting Comparison of Gear Shaper Cutter and Hob

Work Gear Gear Shaper Cutters Hobs NACHI Accuracy of Gear Shaper Cutters ools Unit : μm ools Tooth Width Thin thing Thick thing Tolerance Type Suitable for cutting of internal gear and Shoulder gear Cutting of internal gear and Shoulder gear is not possible Cutter Elements Grade Accuracy Pitch Error� Large� Pitch Error� Small� Gear Cutting T AA A Gear Cutting T Tooth Profile Error� Small� Tooth Profile Error� Large� Surface Roughness Small Surface Roughness Large d≦18 � 0～＋3� 0～＋5� 18＜d≦30 � 0～＋4� 0～＋6� Bore Diameter� 30＜d≦50 � 0～＋4� 0～＋7� d 50＜d≦80 � 0～＋5� 0～＋8� 80＜d≦120� 0～＋6� 0～＋10� Feed per Stroke Shank Runout� 2� 3� After Gear Shaper Cutting After Hobbing Outside Diameter Runout � 7� 10� Datum Face Runout � 5� 5� Others Regrinding is easy� Must hold down a gach spacing error in regrinding� Inner Face Runout� 5� 5� Heavy cutting is not made� Heavy cutting is easy� Cutting Face Runout� 10� 16� Cutters are different, and need a helical guide by helix In one hob, can do gear processing of various helix angle� angle of gear Pitch of a processing gear is related to a master warm of Face Angle(min.)� ±5 ±14 hobbing machine Side Relief Angle(min.)� ±5� Radial Relief Angle(min.) ±5 Types of Gear Shaper Cutters Gear Shaper Cutters Unit : μm Gear Shaper Cutters Tolerance Cutter Elements Module

ypes Under Type 38 and m＜1.5 1.5≦m＜5 m≧5

Outside Diameter ＋200～－400 ±400 ±500

Unit : μm Tolerance Cutter Elements Grade Type Module

0.5≦m≦11＜m≦1.6 1.6＜m≦2.5 2.5＜m≦44＜m≦66＜m≦10 10＜m≦16 Gear Cutting Comparison and T � 25､ 38､ 50� 15（19）� 15（19）� 11（14）� 11（14）� －� －� －� NACHI Accuracy of Gear Shaper Cutters AA� 75､ 100 � 16（20）� 16（20）� 12（15）� 13（17）� 14（18）� 17（22）� －� Disk Type for Shoulder Gears Deep Counterbore Type with Recessed Nut � 125､150､175 －� 16（20）� 13（17）� 14（18）� 15（19）� 18（23）� －� Tooth Space Runout � 25､ 38､ 50� 19（25）� 18（23）� 17（22）� 16（20）� －� －� －� A� 75､ 100 � 19（25）� 19（25）� 18（23）� 18（23）� 20（26）� 24（31）� －� � 125､150､175 －� 20（26）� 19（25）� 20（26）� 22（28）� 26（34）� 32（41）� � 25､ 38､ 50� 3� 3� 4� 4� －� －� －� AA� 75､ 100 � 4� 4� 4� 4� 5� 6� －� ､､－� 4� 5� 5� 6� 7� －� Adjacent Pitch Error � 125 150 175 � 25､ 38､ 50� 5� 5� 6� 6� －� －� －� A� 75､ 100 � 6� 6� 6� 7� 8� 9� －� � 125､150､175 －� 7� 7� 8� 8� 10� 13� � 25､ 38､ 50� 11� 12� 13� 14� －� －� －� AA� 75､ 100 � 12� 13� 14� 15� 17� 20� －� � 125､150､175 －� 15� 16� 17� 19� 22� －� Accumulative Pitch Error � 25､ 38､ 50� 18� 19� 21� 23� －� －� －� A� 75､ 100 � 21� 22� 23� 25� 28� 34� －� Shank Type for Small Diameter Internal Gear � 125､150､175 －� 25� 26� 28� 32� 37� 46� AA� －� 6� 6� 7� 9� 11� 15� －� Profile Error A� －� 8� 9� 10� 13� 16� 22� 22� AA� －� 13� 13� 17� 21� 27� 33� －� Tooth Thickness(－) A －� 21 21 27 33 43 53 53 Remarks : Value in ( ) is applied to the pressure angle of less than 15 degrees.

25 26 Gear Shaper Cutters Gear Shaper Cutters

Gear Cutting Comparison of Gear Shaper Cutter and Hob

ypes Under Type 38 and m＜1.5 1.5≦m＜5 m≧5

Outside Diameter ＋200～－400 ±400 ±500

Unit : μm Tolerance Cutter Elements Grade Type Module

25 26 Cutting Condition and Regrinding Gear Shaper Cutters Gear Cutting Tools Regrinding (In thecaseofcoatedshapercutter) Cutting Condition� r Next, thepr type). � with magneticclamps(orinsertedintotapershankcutterholdersifit’ When grindingisdone,thecutterplacedincenteroftableandattached surface grinder Regrinding withdisctypeandhubgearshapercuttersisdonear 27 Example egrinding isdoneasshowninthediagram. Gear ShaperCutters Tool Material Power HSS Grade Structure� Grain Size� Abrasive� Depth ofCut Offset� Back Off� Radial Feed� Rotary Feed� Cutting Speed HSS oper rakeangle(generally5˚)issetonthemagneticchuckand Elements . � � （Note1）� Wheel Dia. Wheel 305mm 305mm FCD70 S45C� Blister Steel� 220� H C� 9� Wheel Rotation 1500min 1500min -1 -1 Cutting Condition By GearSpec. By DirectionofRevolutionandGearSpec. 0.2～0.8mm� 0.002～0.01mm/Stroke� 0.2～3.0mm/Stroke� 20～40m/min 30～50m/min� 40～80m/min� sharp. Be car wear isappr A guidelineforthemosteconomicalpointsr Regrinding points� Wheel Speed 1500m/min 1500m/min eful ofgrindingbur s ashank （Note2）� ox. 0.2mmwide.� otary Finishing Roughing Finishing Roughing n withdr � Regrinding Method Depth ofCut essing grindingwheelandkeepingitvery based onthedepthoftoothspace. The positionofgrindingwheelisdetermined Note2.Please notethatcuttingspeedshouldbe Note1.Cutting speediscalculatedoncutting 0.01～0.02mm 0.02mm 0.02mm 0.02～0.05mm 6mm machine. selected basedupongearshaper length andnumbersofcutterstroke. V Wc� b� Abrasive Wheel egrinding iswhentheflank Cutting speed Numbers ofstroke Work width 5°� （ mm （ m/min ） � � （ str/min ） Installation Plug � Cutting Oil Soluble Oil NK55 Noritake� ） � V= Wc ・（ 1000 b ＋ 6 ）・ π � splines, andthistableshowsstandar This typeofcutterisusedincuttingspurgearsor Standar Cutters T Disk T � Gear ShaperCutters Module� 8 � 7� 6.5� � 6� � 5.5� � 5� � 4.5� � 4� 3.75� � 3.5� 3.25� � 3� � 2.75� � 2.5� � 2.25� � 2� � 1.75� � 1.5� � � 1.25� � � � 1.0� � � 0.9� � 0.8� � 0.75� � 0.7� 0.65� � 0.6� 0.55� 0.5� 0.45� � 0.4� 0.35� � 0.3� m � � Diametral� Pitch� � � � � 4� � 4� � 5� � 5� � 6� � � 7� � � 8� � 9� � 10� � 11� � 12� � 14� � 16� � 18� 20� � 22� 24� 25� � 26� 28� � 30� � 32� � 36� � � 40� � � � � 60� � � 80� � DP ype Shaper� � � 1� � 1� � 2� � 2� � d Dimensions No. of� Teeth ype 100� 110� 120� 126� 142� 164� 164� 13� 14� 14� 15� 16� 16� 17� 18� 19� 20� 20� 22� 23� 24� 25� 28� 28� 32� 34� 36� 40� 40� 44� 48� 50� 50� 52� 56� 56� 60� 64� 64� 66� 72� 72� 76� 80� 84� 90� � � � � � � � � � � OAL� Ⅰ 18 16 14 12 10 L � 8 � d dimensions.� Type 50 Thickness Web� 6.5 －� 8 � L 2 � 19.05 Bore� Dia.� d (Ref.) 28 B� No. of� Teeth 100� 108� 108� 116� 120� 126� 136� 150� 16� 17� 17� 18� 19� 20� 21� 22� 23� 24� 25� 27� 28� 30� 30� 33� 34� 36� 38� 42� 44� 48� 50� 54� 60� 60� 66� 72� 76� 76� 78� 84� 84� 90� 94� 96� Pitch Cir � � � � � � � � � � � � OAL� 22 20 18 16 14 L � cle Diameter φB φd Type 75 Thickness Web� 10 －� －� L 8 2 � 31.742 Bore� Dia.� d L2 L (Ref.) 50

B� 5˚� No. of� Teeth 100� 100� 14 15� 16� 16� 17� 18� 19� 20� 20� 22� 22� 24� 25� 26� 28� 28� 30� 32� 33� 36� 36� 40� 40� 44� 44� 48� 50� 56� 56� 64� 66� 72� 80� 80� 88� 96� 13 � � � � � � � OAL� L 28 24 22 20 18 � Thickness� Type 100 Web� L 12 10 2 －� 44.450 31.742� Bore� Dia.� d or� Next Page Unit :mm (Ref.) 28 65 B�

Disk Type Shaper Cuttersype TⅠ Standard Dimensions Gear Shaper Cutters Gear Cutting Tools Cutting Condition and Regrinding Gear Shaper Cutters Gear Cutting Tools Regrinding (In thecaseofcoatedshapercutter) Cutting Condition� 27 r Next, thepr type). � with magneticclamps(orinsertedintotapershankcutterholdersifit’ When grindingisdone,thecutterplacedincenteroftableandattached surface grinder Regrinding withdisctypeandhubgearshapercuttersisdonear Example egrinding isdoneasshowninthediagram. Gear ShaperCutters Tool Material Power HSS Grade Structure� Grain Size� Abrasive� Depth ofCut Offset� Back Off� Radial Feed� Rotary Feed� Cutting Speed HSS oper rakeangle(generally5˚)issetonthemagneticchuckand Elements . � � （Note1）� Wheel Dia. Wheel 305mm 305mm FCD70 S45C� Blister Steel� 220� H C� 9� Wheel Rotation 1500min 1500min -1 -1 Cutting Condition By GearSpec. By DirectionofRevolutionandGearSpec. 0.2～0.8mm� 0.002～0.01mm/Stroke� 0.2～3.0mm/Stroke� 20～40m/min 30～50m/min� 40～80m/min� sharp. Be car wear isappr A guidelineforthemosteconomicalpointsr Regrinding points� Wheel Speed 1500m/min 1500m/min eful ofgrindingbur s ashank （Note2）� ox. 0.2mmwide.� otary Finishing Roughing Finishing Roughing n withdr � Regrinding Method Depth ofCut essing grindingwheelandkeepingitvery based onthedepthoftoothspace. The positionofgrindingwheelisdetermined Note2.Please notethatcuttingspeedshouldbe Note1.Cutting speediscalculatedoncutting 0.01～0.02mm 0.02mm 0.02mm 0.02～0.05mm 6mm machine. selected basedupongearshaper length andnumbersofcutterstroke. V Wc� b� Abrasive Wheel egrinding iswhentheflank Cutting speed Numbers ofstroke Work width 5°� （ mm （ m/min ） � � （ str/min ） Installation Plug � Cutting Oil Soluble Oil NK55 Noritake� ） � V= Wc ・（ 1000 b ＋ 6 ）・ π � � splines, andthistableshowsstandar This typeofcutterisusedincuttingspurgearsor Standar Cutters T Disk T Gear ShaperCutters Module� 8 � 7� 6.5� � 6� � 5.5� � 5� � 4.5� � 4� 3.75� � 3.5� 3.25� � 3� � 2.75� � 2.5� � 2.25� � 2� � 1.75� � 1.5� � � 1.25� � � � 1.0� � � 0.9� � 0.8� � 0.75� � 0.7� 0.65� � 0.6� 0.55� 0.5� 0.45� � 0.4� 0.35� � 0.3� m � � Diametral� Pitch� � � � � 4� � 4� � 5� � 5� � 6� � � 7� � � 8� � 9� � 10� � 11� � 12� � 14� � 16� � 18� 20� � 22� 24� 25� � 26� 28� � 30� � 32� � 36� � � 40� � � � � 60� � � 80� � DP ype Shaper� � � 1� � 1� � 2� � 2� � d Dimensions No. of� Teeth ype 100� 110� 120� 126� 142� 164� 164� 13� 14� 14� 15� 16� 16� 17� 18� 19� 20� 20� 22� 23� 24� 25� 28� 28� 32� 34� 36� 40� 40� 44� 48� 50� 50� 52� 56� 56� 60� 64� 64� 66� 72� 72� 76� 80� 84� 90� � � � � � � � � � � OAL� Ⅰ 18 16 14 12 10 L � 8 � d dimensions.� Type 50 Thickness Web� －� 6.5 8 � L 2 � 19.05 Bore� Dia.� d (Ref.) 28 B� No. of� Teeth 100� 108� 108� 116� 120� 126� 136� 150� 16� 17� 17� 18� 19� 20� 21� 22� 23� 24� 25� 27� 28� 30� 30� 33� 34� 36� 38� 42� 44� 48� 50� 54� 60� 60� 66� 72� 76� 76� 78� 84� 84� 90� 94� 96� Pitch Cir � � � � � � � � � � � � OAL� 22 20 18 16 14 L � cle Diameter φB φd Type 75 Thickness Web� 10 －� －� L 8 2 � 31.742 Bore� Dia.� d L2 L (Ref.) 50

Disk Type Shaper Cuttersype TⅠ Standard Dimensions Gear Shaper Cutters Gear Cutting Tools Disk Type Shaper Cuttersype T Ⅰ Standard Dimensions Gear Shaper Cutters Gear Cutting Tools 29 Gear ShaperCutters Module� 12 11� � 10� 9� � 8� � 7� 6.5� � 6� � 5.5� � 5� � 4.5� � 4� 3.75� � 3.5� 3.25� � 3� � 2.75� � 2.5� � 2.25� � 2� � 1.75� � 1.5� � � 1.25� � � � 1� m � � Diametral� � � 2� � � 3� � 3� � � 4� � 4� � 5� � 5� � 6� � � 7� � � 8� � 9� � 10� � 11� � 12� � 14� � 16� � 18� 20� � 22� 24� 25� � Pitch� DP � � 1� � 1� � 1� � 1� � 2� � 2� � 2� � 2� No. of� Teeth 100� 100� 110� 120� 126� 126� 17 18� 19� 20� 20� 21� 22� 23� 25� 25� 28� 28� 30� 32� 34� 35� 36� 38� 40� 42� 45� 46� 50� 50� 54� 56� 60� 64� 70� 72� 80� 84� 90� OAL� 30 26 24 22 20 L � Type 125 Thickness Web� 12 10 －� � L 2 � 44.450 Bore� Dia.� d (Ref.) 85 B� No. of� Teeth 100� 106� 120� 120� 130� 142� 150� 150� 15 17� 18� 19� 21� 22� 23� 24� 25� 27� 28� 30� 30� 33� 34� 36� 38� 40� 42� 44� 46� 48� 50� 54� 54� 60� 60� 64� 66� 70� 75� 82� 86� 94� OAL� 32 28 26 24 22 L � Type 150 Thickness� Web� 14 12 L 2 44.450 Bore� Dia.� d (Ref.) 95 B� No. of� Teeth 100� 110� 116� 15 16� 17� 18� 19� 21� 22� 24� 25� 27� 28� 29� 30� 32� 34� 35� 38� 39� 42� 44� 47� 48� 50� 54� 56� 58� 62� 64� 68� 70� 76� 78� 82� 8� 96� OAL� L 36 34 30 28 26 � Thickness� Type 175 Web� L －� 16 14 2 44.450� 58.735 Bore� Dia.� d or� Unit :mm (Ref.) 110 B� Standar this tableshowsstandar This typeofcutterisusedincuttinghelicalgears,and Cutters T Disk T Gear ShaperCutters Module� 8 � 7� 6.5� � 6� � 5.5� � 5� � 4.5� � 4� 3.75� � 3.5� 3.25� � 3� � 2.75� � 2.5� � 2.25� � 2� � 1.75� � 1.5� � � 1.25� � � � 1.0� � � 0.9� � 0.8� � 0.75� � 0.7� 0.65� � 0.6� 0.55� 0.5� 0.45� � 0.4� 0.35� � 0.3� m � � Diametral� � 3� � � 4� � 4� � 5� � 5� � 6� � � 7� � � 8� � 9� � 10� � 11� � 12� � 14� � 16� � 18� 20� � 22� 24� 25� � 26� 28� � 30� � 32� � 36� � � 40� � � � � 60� � � 80� � Pitch� DP ype Shaper� � � 1� � 1� � 1� � 2� � 2� � 2� � d Dimensions ype OAL� 22 20 18 16 14 12 L d dimensions. � Width� Tooth� 18 16 14 12 10 L Ⅱ 8 1 � Type 50 Thickness Web� －� 6.5 8 � L 2 � 19.050 Bore� Dia.� d (Ref.) 28 B�

L1 OAL� 26 24 22 20 16 L � Pitch Cir Width� Tooth� 22 20 18 16 14 L 1 cle Diameter φB φd Type 75 Thickness Web� 6.5 10 －� －� L 8 2 � 31.742 Bore� Dia.� d

L2 (Ref.) 50

B� L 5˚� OAL� L 34 30 28 26 24 � Width� Tooth� L 28 24 22 20 18 1 Thickness� Type 100 Web� L 12 10 2 －� 44.450 31.742� Bore� Dia.� d or� Unit :mm (Ref.) 30 B� 65

Disk Type Shaper Cuttersype TⅡ Standard Dimensions Gear Shaper Cutters Gear Cutting Tools Disk Type Shaper Cuttersype T Ⅰ Standard Dimensions Gear Shaper Cutters Gear Cutting Tools 29 Gear ShaperCutters Module� 12 11� � 10� 9� � 8� � 7� 6.5� � 6� � 5.5� � 5� � 4.5� � 4� 3.75� � 3.5� 3.25� � 3� � 2.75� � 2.5� � 2.25� � 2� � 1.75� � 1.5� � � 1.25� � � � 1� m � � Diametral� � � 2� � � 3� � 3� � � 4� � 4� � 5� � 5 � 6� � � 7� � � 8� � 9� � 10� � 11� � 12� � 14� � 16� � 18� 20� � 22� 24� 25� � Pitch� DP � � � 1� � 1� � 1� � 1� � 2� � 2� � 2� � 2� No. of� Teeth 100� 100� 110� 120� 126� 126� 17 18� 19� 20� 20� 21� 22� 23� 25� 25� 28� 28� 30� 32� 34� 35� 36� 38� 40� 42� 45� 46� 50� 50� 54� 56� 60� 64� 70� 72� 80� 84� 90� OAL� 30 26 24 22 20 L � Type 125 Thickness Web� 12 10 －� � L 2 � 44.450 Bore� Dia.� d (Ref.) 85 B� No. of� Teeth 100� 106� 120� 120� 130� 142� 150� 150� 15 17� 18� 19� 21� 22� 23� 24� 25� 27� 28� 30� 30� 33� 34� 36� 38� 40� 42� 44� 46� 48� 50� 54� 54� 60� 60� 64� 66� 70� 75� 82� 86� 94� OAL� 32 28 26 24 22 L � Type 150 Thickness� Web� 14 12 L 2 44.450 Bore� Dia.� d (Ref.) 95 B� No. of� Teeth 100� 110� 116� 15 16� 17� 18� 19� 21� 22� 24� 25� 27� 28� 29� 30� 32� 34� 35� 38� 39� 42� 44� 47� 48� 50� 54� 56� 58� 62� 64� 68� 70� 76� 78� 82� 8� 96� OAL� L 36 34 30 28 26 � Thickness� Type 175 Web� L －� 16 14 2 58.735 44.450� Bore� Dia.� d or� Unit :mm (Ref.) 110 B� this tableshowsstandar This typeofcutterisusedincuttinghelicalgears,and Standar Cutters T Disk T Gear ShaperCutters Module� 8 � 7� 6.5� � 6� � 5.5� � 5� � 4.5� � 4� 3.75� � 3.5� 3.25� � 3� � 2.75� � 2.5� � 2.25� � 2� � 1.75� � 1.5� � � 1.25� � � � 1.0� � � 0.9� � 0.8� � 0.75� � 0.7� 0.65� � 0.6� 0.55� 0.5� 0.45� � 0.4� 0.35� � 0.3� m � � Diametral� � 3� � � 4� � 4� � 5� � 5� � 6� � � 7� � � 8� � 9� � 10� � 11� � 12� � 14� � 16� � 18� 20� � 22� 24� 25� � 26� 28� � 30� � 32� � 36� � � 40� � � � � 60� � � 80� � Pitch� DP ype Shaper� � � 1� � 1� � 1� � 2� � 2� � 2� � d Dimensions ype OAL� 22 20 18 16 14 12 L d dimensions. � Width� Tooth� 18 16 14 12 10 L Ⅱ 8 1 � Type 50 Thickness Web� －� 6.5 8 � L 2 � 19.050 Bore� Dia.� d (Ref.) 28 B�

L1 OAL� 26 24 22 20 16 L � Pitch Cir Width� Tooth� 22 20 18 16 14 L 1 cle Diameter φB φd Type 75 Thickness Web� 6.5 10 －� －� L 8 2 � 31.742 Bore� Dia.� d

L2 (Ref.) 50

B� L 5˚� OAL� L 34 30 28 26 24 � Width� Tooth� L 28 24 22 20 18 1 Thickness� Type 100 Web� L 12 10 2 －� 31.742� 44.450 Bore� Dia.� d or� Unit :mm (Ref.) 30 B� 65

Disk Type Shaper Cuttersype TⅡ Standard Dimensions Gear Shaper Cutters Gear Cutting Tools Gear Shaper Cutters Gear Shaper Cutters

Helical Gear Shaper Cutters Dimensions Disk Type Shaper Cutters Type Ⅲ φd ools This type of cutter is used to cut helical gear. ools The No. of cutter Teeth is determined by module and helix angle of gear and the helical Helical Gear Standard Dimensions 2

Gear Shaper L guide. Cutter L 1

When ordering the helical shaper cutter, please specify the guide lead on addition to the This type cutter is used in cutting larger module gears, and this table L Gear Cutting T Gear Cutting T

cutter and work dimensions. Shared calculation is necessary. shows standard dimentions. 5˚ φB NC guide gear shaping machine does not need a helical guide.

Pitch Circle Diameter

Unit:mm Unit:mm Type 125 Type 150 Type 175 Type 200 Type 250 Module Diametral Module Diametral Pitch OAL Tooth Web Bore B OAL Tooth Web Bore B OAL Tooth Web Bore B Pitch No. of OAL Tooth Web Bore B No. of OAL Web Tooth Bore B Width Thickness Dia. (Ref.) Width Thickness Dia. (Ref.) Width Thickness Dia. (Ref.) Teeth Width Thickness Dia. (Ref.) Teeth Thickness Width Dia. (Ref.) m DP L L1 L2 d L L1 L2 d L L1 L2 d m DP L L1 L2 d L L2 L1 d 1 8 25 25 3 24 24 9 23 58.735 22 26 20 28 22 － 10 21 40 24 18 or 135 25 1 76.200 1.25 2 2 20 25 76.200 Gear Shaper Cutters 20 12 17 21 Gear Shaper Cutters 50 30 20 or 170 18 12 2 20 101.600 1.5 14 18 16 16 16 1.75 28 22 30 24 26 14 2 10 12 2.25 36 11 2.5 10 28 85 34 26 d Dimensions Clutch Keyway d Dimensions Helical Gear Shaper Cutters 2.75 30 24 9 Standar Standar Ⅲ Ⅱ 3 44.450 ype ype 14 8 44.450 95 3.25 3.5 7 ype Shaper Cutters T ype Shaper Cutters T 3.75 44.450 110

or Disk T Disk T 4 6 36 28 58.735 4.5 14 40 30 1 5 2 32 26 5 5 12 5.5 1 4 2 6 4 Clutch Keyway Dimensions 6.5 7 36 30 80 1 3 2 40 32 8 44 34 3 9

10 W 1 － 2 2 H 11 － 48 36 16 100 12

Helical Guide Lead of Guide Cutter Pitch Dia.×π Unit:mm β Lead of Cutter=Lead of Guide W Lead of Cutter H For Positioning For Stopper m : Normal Module Zc : No. of Cutter Teeth Size Tolerance Size Tolerance Size Tolerance βc : Helix Angle of Cutter 5.0 5.0 1.6 L : Lead Of Guide +0.015 6.5 6.5 m×π×Zc 0 Cutter Helix Angle at Pitch Dia.=Work Helix Angle L = 8.0 8.0 +0.1 +0.4 sinβc 9.5 9.5 0 3.2 0 +0.025 12.5 12.5 0 16.0 16.0

31 32 Gear Shaper Cutters Gear Shaper Cutters

Gear Shaper L guide. Cutter L 1

When ordering the helical shaper cutter, please specify the guide lead on addition to the This type cutter is used in cutting larger module gears, and this table L Gear Cutting T Gear Cutting T cutter and work dimensions. Shared calculation is necessary. shows standard dimentions. 5˚ φB NC guide gear shaping machine does not need a helical guide.

Pitch Circle Diameter

or Disk T Disk T 4 6 36 28 58.735 4.5 14 40 30 1 5 2 32 26 5 5 12 5.5 1 4 2 6 4 Clutch Keyway Dimensions 6.5 7 36 30 80 1 3 2 40 32 8 44 34 3 9

10 W 1 － 2 2 H 11 － 48 36 16 100 12

31 32 Gear Shaper Cutters Gear Shaper Cutters

Deep Counterbore Type φd Sproket Shaper Cutters ools ools φd 2

Shaper Cutters L Standard Dimensions 2 L L

This cutter is used to manufacture sproket wheels, L Standard Dimensions 1 L Gear Cutting T Gear Cutting T

and this table shows standard dimensions. 5˚ This type of cutter is used in cutting internal gears or 5˚ Pitch Circle Diameter

shoulder gears, and this table shows standard Pitch Circle Diameter dimentions.

Unit:mm Unit:mm Type 50 Type 75 Type 100 Type 125 Type 75 Type 100 Type 125 Module Diametral Pitch No. of OAL Tooth Web Bore No. of OAL Tooth Web Bore No. of OAL Tooth Web Bore No. of OAL Tooth Web Bore Chain Pitch No. of OAL Web Bore No. of OAL Web Bore No. of OAL Web Bore Teeth Width Thickness Dia. Teeth Width Thickness Dia. Teeth Width Thickness Dia. Teeth Width Thickness Dia. CP Teeth Thickness Dia. Teeth Thickness Dia. Teeth Thickness Dia. m DP L L1 L2 d L L1 L2 d L L1 L2 d L L1 L2 d L L2 d L L2 d L L2 d 0.3 164 6.35 36 48 60 80 164 0.35 142 9.525 24 32 40 22 8 － 31.742 10 0.4 126 12.7 18 18 8 31.742 24 30 60 120 22 10 or 15.875 14 20 24 24 44.450 Gear Shaper Cutters 0.45 110 Gear Shaper Cutters 44.450 0.5 100 150 19.05 12 16 20 0.55 90 136 0.6 84 126 25.4 －－－ 12 15 12 － 40 80 24 10 120 32 14 －－ 31.75 －－－－－－－ 12 0.65 76 116 0.7 72 108 36 72 108 d Dimensions 0.75 66 100 32 64 96 d Dimensions 0.8 64 94 30 60 90 30 12 34 16 0.9 56 84 28 56 84 26 52 78 ype Shaper Cutters Standar 1.0 50 76 100 38 18 126 e T 25 50 76 100 126 24 48 8 19.05 72 96 120 22 44 66 88 110 40 20

1.25 40 60 8 80 100 oket Shaper Cutters Standar 20 40 60 80 100 Spr Deep Counterbor 18 36 32 14 54 36 18 72 40 20 90 1.5 34 50 66 84 16 32 48 31.742 64 80 1.75 28 44 56 72 42 22 14 28 42 56 70 2 26 38 50 64 12 25 36 48 60 10 2.25 24 34 44 56 11 24 32 44 54 2.5 23 30 40 50 10 23 30 40 50 44.450 10 2.75 22 34 16 28 38 20 36 42 22 46 44 24 9 22 27 36 45 31.742 3 20 26 34 42 or 8 19 25 32 40 44.450 3.25 19 24 30 38 3.5 18 23 28 36 7 17 22 28 35 3.75 16 38 18 21 27 34 4 16 20 25 32 6 19 42 22 10 24 30 4.5 18 23 28 1 5 2 18 22 44 24 28 48 26 5 17 21 25 5 21 25 12 5.5 20 23 1 4 2 － 20 22 6 19 21 4 － 18 20 6.5 17 20 7 16 50 28 12 19 50 30 1 3 2 16 18 8 15 17

33 34 Gear Shaper Cutters Gear Shaper Cutters

Deep Counterbore Type φd Sproket Shaper Cutters ools ools φd 2

Shaper Cutters L Standard Dimensions 2 L L

This cutter is used to manufacture sproket wheels, L Standard Dimensions 1 L Gear Cutting T Gear Cutting T

and this table shows standard dimensions. 5˚ This type of cutter is used in cutting internal gears or 5˚ Pitch Circle Diameter shoulder gears, and this table shows standard Pitch Circle Diameter dimentions.

33 34 Shaving Cutters Shaving Cutters

Shaving Cutters Shaving Methods and Features ools Shaving Methods Features Figure ools Shaving cutter is the gear cutting tool that have many serrated grooves at the tooth flanks. This is most common shaving method and the tooth of gear is very finely finished. Cutter The both gear and the cutter is mounted on the shaving machine with In this shaving, work gear is fed along a path parallel to its axis, with the center of the tool passing from one edge of the gear face to the opposite edge. Crowned

Gear Cutting T intersecting angle. Work Gear Cutting T gear teeth are produced by rocking the table during the shaving cycle. This Then it makes sliding action on these flanks by rotating shaving cutter to process is particularly adaptable to shaving wide-faced gears. finish the flanks of the gear teeth. Conventional Shaving Cutter Features of shaving Work 1. Short finishing tact time 2. Easy to modify the gear profile and lead form such as crowning form Direction of Table Traverse

This method is used in finishing of automobile gears. In this shaving, work gear is Cutter reciprocated across the cutter in a path between zero to 90° to the work gear axis. Normaly this angle is from 15° to 35°. The direction of rotation is reversed at each Work end to the stroke. Tooth-crowning is produced by a reverse-crowned cutter in this process.The cutter may be narrower than the work gear. The cutting time is shorter than the Conventinal Shaving. raverse Diagonal Shaving Cutter Work able T Shaving Cutters Shaving Cutters T

Direction of Table Traverse

This is used mainly for shaving shoulder gears. The work gear is reciprocated Cutter es across the cutter at an angle of 90° to the work gear axis. The direction of rotation is reversed at each end to the stroke. The cutter is wider than the work gear and is provided with a differential serration. Tooth-crowning is produced by a reverse- Work crowned cutter in this process. Cutter Before Shaving After Shaving Underpass Shaving Work e of Shaving Cutters

Shaving Cutter Nomenclature Shaving Methods and Featur Direction of Table Traverse e and Nomenclatur Full Width Full Width Of the four methods, this method has the shortest shaving time and produces Cutter

Featur high quality finished tooth profile, making it most suitable for high production. The Body Width Body Width Key Way work gear is fed in the gear's radius direction. The cutter is wider than the work gear, and is provided with specially designed differential serration. Tooth-crowning In Feed is produced by a reverse-crowned cutter in this process.

Plunge cut Shaving Work Marking Work Cutter

e Dia.

cle Diameter Bor 165 (135) 145 (115) φ φ Outside Diameter Pitch Cir

Serration Non Serration Lead Having Serration Lead

Helix Angle Top Land Tooth Flank

Serration Serration Depth

Land

Cutting Edge Normal Serration For Conventional Shaving Differential Serration For Underpass Shaving

For Diagonal Shaving For Plunge cut Shaving Pitch Cincle Slot Clearance

35 36 Shaving Cutters Shaving Cutters

Direction of Table Traverse

Plunge cut Shaving Work Marking Work Cutter

e Dia. cle Diameter Bor 165 (135) 145 (115) φ φ Outside Diameter Pitch Cir

Serration Non Serration Lead Having Serration Lead

Helix Angle Top Land Tooth Flank

Serration Serration Depth

Land

Cutting Edge Normal Serration For Conventional Shaving Differential Serration For Underpass Shaving

For Diagonal Shaving For Plunge cut Shaving Pitch Cincle Slot Clearance

35 36

Shaving Cutters Shaving Cutters

Shaving Mechanism and Cycle Diagram

Traverse Type Plunge Cut Type Conventional NACHI Accuracy of Shaving Cutters ools Unit : μm ools

Tolerance Cutter Elements Type Grade Module Gear Cutting T 0.8≦m≦1.2 1.2＜m≦1.6 1.6＜m≦2.5 2.5＜m≦44＜m≦6.3 6.3＜m≦10 10＜m≦16 16＜m≦20 Gear Cutting T

A ±300 ±400 ±600 Cutter Cutter Outside Diameter ＋300 ＋600 ＋700 B ＋100 ＋300 ＋300 Shaving Mechanism Work 0 0 0 A Work －25 －40 －60 Tooth Thickness ＋50 B ±30 ±50 － 0

A 15 Outside Diameter Runout B 20 25 －－

Face Runout 5 Serration Normal Serration (Parallel) Differential Serration Shaving Cutters Shaving Cutters Under 250 13 15 15 15 16 －－－ Infeed 300, 325 －－－－－ 16 18 － Time (Second) A Tooth Space 400 －－－－－ 18 20 22 Runout Under 250 48 50 52 57 63 －－－ 300, 325 B －－－－－ 81 －－ Cycle Diagram Rev －－－－－－－－ Back Movement 400

Infeed T1 T2 T3 Under 250 4 4 4 4 5 －－－－－－－－ 5 5 － Rough Finish 300, 325 A Width of Work Traverse Adjacent Pitch 400 －－－－－ 5 5 6 Error Under 250 －－－－－－－－ 300, 325 B －－－－－－－－ NACHI Accuracy of Shaving Cutters 400 －－－－－－－－ Shaving Mechanism and Cycle Diagram Plunge Cut Shaving Cutter Under 250 8 8 18 20 23 －－－ Reading accuracy improvent of lead 300, 325 A －－－－－ 25 28 － Strength improvement of end land Accumulative 400 －－－－－ 28 30 35 Recommend in less than gear width 32mm Pitch Error Under 250 68 71 74 81 90 －－－ 300, 325 B －－－－－ 115 －－ 400 －－－－－－－－ A ±5/25.4mm ±7/25.4mm Lead B ±15/25.4mm ±17/25.4mm －－ Lead Error A 5 Conventional Leave Both End Land Symmetricity B －

A ±2 ±3 ±4 ±5 ±6 Profile Error (*) B －

Remarks 1 : Grade A are applied to Ground cutters. Grade B is applied to Semi-ground cutters. Remarks 2 : Indicades tolerance on tooth thickness corresponding to the outside diameter.

Actual Tooth Tooth Width=Actual Tooth Width Tentative Tooth Width Width Line Tentative End Lamd Warranty Specitications of Cutter Line Actual Lead Error Cutter Warranty New Cutter Regrinding Cutter Tentative Tentative Actual Hollow Lead Error Hollow Amount Amount Semi-ground Cutter (Grinding on Bore and Keyway) ○

Cutter Warranty (Without Trial Test) ○ ○

Work Warranty (With Trial Test) ○ ○

37 38

Shaving Cutters Shaving Cutters

Shaving Mechanism and Cycle Diagram

Traverse Type Plunge Cut Type Conventional NACHI Accuracy of Shaving Cutters ools Unit : μm ools

Tolerance Cutter Elements Type Grade Module Gear Cutting T 0.8≦m≦1.2 1.2＜m≦1.6 1.6＜m≦2.5 2.5＜m≦44＜m≦6.3 6.3＜m≦10 10＜m≦16 16＜m≦20 Gear Cutting T

A ±300 ±400 ±600 Cutter Cutter Outside Diameter ＋300 ＋600 ＋700 B ＋100 ＋300 ＋300 Shaving Mechanism Work 0 0 0 A Work －25 －40 －60 Tooth Thickness ＋50 B ±30 ±50 － 0

A 15 Outside Diameter Runout B 20 25 －－

A ±2 ±3 ±4 ±5 ±6 Profile Error (*) B －

Remarks 1 : Grade A are applied to Ground cutters. Grade B is applied to Semi-ground cutters. Remarks 2 : Indicades tolerance on tooth thickness corresponding to the outside diameter.

Cutter Warranty (Without Trial Test) ○ ○

Work Warranty (With Trial Test) ○ ○

37 38 Shaving Cutters Forming Racks

Standard Number of Cutter Teeth Forming Racks ools Module Module ools Type No. of Teeth Type No. of Teeth m m Forming Racks are used in pairs to roll the teeth into the workpiece, and have next 0.8 214 1.25 173 features. 1.0 173 1.5 151 Rolling is generally completed in a few seconds and is a far more efficient than

Gear Cutting T 1.25 137 1.75 121 hobbing. Gear Cutting T 1.5 113 2.0 113 This method can achieve better accuracy than cylindrical dies rolling. 1.75 97 2.25 97 2.0 89 2.5 89 2.25 79 2.75 79 175 2.5 67 3.0 73 225 2.75 61 3.25 67 3.0 59 3.5 61 3.25 53 3.75 59 3.5 ※ 47 4.0 53 Rolling Principles 3.75 ※ 47 4.5 ※ 47 4.0 ※ 43 5.0 ※ 43 Vertical Rolling Machine 1.0 197 5.5 ※ 41 Hydraulic Cylinder or Ball Screw

1.25 151 6.0 ※ 30 Forming Racks Shaving Cutters 1.5 137 4.0 73 1.75 113 4.5 67 2.0 97 5.0 59 2.25 89 5.5 53 Rack

Wi dt h 2.5 79 6.0 ※ 47 2.75 73 6.5 ※ 43 300 Synchronizing Mechanism 200 3.0 67 7.0 ※ 43 Left Slide 3.25 61 8.0 ※ 37 3.5 59 9.0 ※ 31

3.75 53 10.0 ※ 29 e and Rolling Principles 4.0 ※ 47 11.0 ※ 27 eeth and Simple Calculation for Cutter Forming Racks Featur 4.5 ※ 43 12.0 ※ 25 5.0 ※ 41 ※ : Less than pressure angle 17.5˚ are not applied 5.5 ※ 37 Headstock d Number of Cutter T 6.0 ※ 33 Standar

Right Slide Tailstock Workpiece Simple Calculation for Cutter Width

Pinion Gear Lc m :Module T=Lc T b :Gear Width ∑ :Crossed Axis Angle

1. Plunge Cut shaving Lc＝b×cos∑＋3mπ×sin∑＋5 Rolling Process

+0.09 8 0 2. Under Pass shaving

b 0

+0.3 +0.005 0 Lc＝＋3mπ×sin∑＋2 63.5 cos∑ 67.5 3. Diagonal shaving (Travel Angle θ) b･tanθ Lc＝＋3mπ×sin∑＋4 sin∑＋cos∑×tanθ (1) (2) (3)

4. Conventional shaving Module≦6:Lc＝25.4mm Module＞6:Lc＝31.75/32.0mm

Cutter width： T (A Standard Example)

inch 19.05 25.4 31.75 38.1 44.45 50.8 Metric 20.0 25.4 32.0 38.0 44.0 50.0

39 40 Shaving Cutters Forming Racks

Wi dt h 2.5 79 6.0 ※ 47 2.75 73 6.5 ※ 43 300 Synchronizing Mechanism 200 3.0 67 7.0 ※ 43 Left Slide 3.25 61 8.0 ※ 37 3.5 59 9.0 ※ 31

Right Slide Tailstock Workpiece Simple Calculation for Cutter Width

Pinion Gear Lc m :Module T=Lc T b :Gear Width ∑ :Crossed Axis Angle

1. Plunge Cut shaving Lc＝b×cos∑＋3mπ×sin∑＋5 Rolling Process

+0.09 8 0 2. Under Pass shaving b 0

+0.3 +0.005 0 Lc＝＋3mπ×sin∑＋2 63.5 cos∑ 67.5 3. Diagonal shaving (Travel Angle θ) b･tanθ Lc＝＋3mπ×sin∑＋4 sin∑＋cos∑×tanθ (1) (2) (3)

4. Conventional shaving Module≦6:Lc＝25.4mm Module＞6:Lc＝31.75/32.0mm

Cutter width： T (A Standard Example) inch 19.05 25.4 31.75 38.1 44.45 50.8 Metric 20.0 25.4 32.0 38.0 44.0 50.0

39 40 Forming Racks Forming Racks

Example of automotive parts Type of Racks and Basic Dimensions ools ools Overall Length Yoke Teeth Length Plate Type

Gear Cutting T Width Gear Cutting T Input Shaft

Relief Finishing Steering Shaft Teeth Teeth Roughing Teeth Wedge Type

Height Double Wedge Type

Plate Type Wedge Type Double Wedge Type ATC Type Applicable Machine Vertical or Horizontal Vertical Rolling Machine Drive Pinion Vertical Rolling Machine Horizontal Rolling Machine Rolling Machine with ATC Forming Racks Axle Shaft Unit : mm Forming Racks Types & Dimensions

Type Plate Type Wedge Type Double Wedge Type ATC Type Drive Axle Teeth Length Overall Length Teeth Length Overall Length Teeth Length Overall Length Teeth Length Overall Length 7 178 210 178 195 178 202 178 178 9 229 261 229 245 229 253 229 229 Example 11 280 312 280 295 280 304 280 280 13 331 362 331 346 331 355 331 331 Drive Shaft Main Shaft 16 407 439 407 422 407 431 407 407 20 508 540 508 523 508 532 508 508 24 610 642 610 623 610 634 610 610 28 712 744 712 725 712 736 712 712

32 813 845 813 826 813 837 813 813 ype of Racks and Basic Dimensions Example Workpieces T 36 915 947 915 928 915 939 915 915 Forming Rack is for large volume production of parts with involute spline, 42 1067 1099 －－ 1067 1091 －－ involute serration, thread, worm and others. 48 1220 1252 －－ 1219 1243 －－

Tool life & Regrinding

The hardness of work and the pressure angle have the largest influence on life. Hardness of less than 200HB is recommended. (see table 1) On other hand, a larger pressure angle increases life. (see table 2) Spline ＋ Thread Worm Screw Oil Groove (Helix Angle 0˚) The tools are reground by removing the worn metal, and regrinding may be allowed for 3～4 times. But the life become lower as a result of regrinding.

Prectical Handness

Pressure Angle Practical Hardness Maximum Hardness Tooth Damage Crack Metal Fatigue 30˚ 285HB less 300HB Depth 37.5˚ 310HB less 330HB Amount to be Removed Number of The Small Teeth Gear Oil Groove (Helix Angle 30˚) ＋ Spline Worm 45˚ 330HB less 350HB

Tool Life of S35C～S45C Steel Rack Height Hardness 200HB 260HB 320HB 340HB After Regrind Pressure Angle 30˚ 100,000 55,000 12,000 －

45˚ 150,000 62,000 30,000 25,000

41 42 Forming Racks Forming Racks

Example of automotive parts Type of Racks and Basic Dimensions ools ools Overall Length Yoke Teeth Length Plate Type

Gear Cutting T Width Gear Cutting T Input Shaft

Relief Finishing Steering Shaft Teeth Teeth Roughing Teeth Wedge Type

Height Double Wedge Type

Tool life & Regrinding

Prectical Handness

Tool Life of S35C～S45C Steel Rack Height Hardness 200HB 260HB 320HB 340HB After Regrind Pressure Angle 30˚ 100,000 55,000 12,000 －

45˚ 150,000 62,000 30,000 25,000

41 42 Other Types of Gear Cutting Tools Other Types of Gear Cutting Tools

Gear Chamfering Tools Reverse Lead Taper ools ools

Deburring Cutters Tooth Forming Tool

This tool is used to create chamfer on the gear hobbed or shaped This tool efficiently forms a reverse lead taper on synchronizer sleeve of Gear Cutting T There are two types of tool. One type chamfers two corners of the tooth, while the transmission. This process is done after broaching or shaping of the part. Gear Cutting T other chamfers all four corners. Special type of Deburring Cutter includes the follows(see sketch at right) Rolling Tool qChamfer includes the root corner wChamfer parallel to the taper face This tool forms a reverse lead taper by pushing into the radial direction of work eChamfer a taper from the tooth tip to root while rolling. This tool is made up of two gears, and can be adjusted. ●The Accuracy of the taper angle is within ±15' ●The burrs after rolled are so big as to be removed by Broaches or other tools Rolling Tool ools ools

1 ypes of Gear Cutting T ypes of Gear Cutting T Other T Other T

2 ool ools ooth Forming T Chamfer 2 Corner Chamfer All Corner Chamfer 3

Gear Chamfering T Gear Work Piece aper T

C C Spur Gear C C Reverse Lead T

C C C Helical Gear C C C

Portion Formed

Electro-Deposited Burnishing Tools

This is an electro-deposited diamond tool used for removing burrs or hit marks from heat treated gear corners.

Gear

Chamfer

43 44 Other Types of Gear Cutting Tools Other Types of Gear Cutting Tools

Gear Chamfering Tools Reverse Lead Taper ools ools

Deburring Cutters Tooth Forming Tool

1 ypes of Gear Cutting T ypes of Gear Cutting T Other T Other T

2 ool ools ooth Forming T Chamfer 2 Corner Chamfer All Corner Chamfer 3

Gear Chamfering T Gear Work Piece aper T

C C Spur Gear C C Reverse Lead T

C C C Helical Gear C C C

Portion Formed

Electro-Deposited Burnishing Tools

This is an electro-deposited diamond tool used for removing burrs or hit marks from heat treated gear corners.

Gear

Chamfer

43 44 Technical Introduction Technical Introduction

Realize finishing of 50-60 HRC herdend material Fruit broaching Realize MQL broaching for time is high efficiency for one second. the first time in the world Hard Broaches Broach for MQL

Highly precise broaching of the high hardness materials(50-60HRC). MQL broach cuts down the running cost by 15% comparing with coolant Sectional carbide broach and hard broaching machine are used, and a oil used. high speed broaching in cutting speed 60m/min. Reduce a washing operation after broaching and improve the working True cutting time is less than for one second. efficiency. Environment-Friendly with MQL system. No need for work piece washing out and dealing with waste fluid.

Applications Involute Spline, Involute Serratrion oaches oaches Br Br

Features MQL Broaching Realize a small amont of coolant broaching by turning cutting oil into mist. Hard Broach Conventional Oil + Conventional Broach mm MQL Semi-dry + MQL Broach 0.10

0.08

0.06 ear W Applications 0.04 Sample Involute spline hole (gear part for autos), CVT ball groove, various variant 0.02 holes oduction oduction 0.00 27 54 81 m Cutting length (m) Features echnical Intr echnical Intr T T Comparison of finished teeth Work piece S45C(200HB) Before After HW-5008 Broach m2xPA30xNT16

Work Cutting conditions Broaching speed 5m/min oaches No.of teeth : 24 Cutting depth 0.06mm/Dia Normal Module : 1 d Br Normal Pressure Angle : 45˚ Conventional oach for MQL Har

Pitch Dia. : 24.000 Too much quantity of oil is required. Br Appearance Dia. : 16.971 What' MQL Major Dia. : 25.46 Minor Dia. : 23.76 MQL = Minimum Quantity Lubrication = Mist Machining = Semi Dry Machining

Use a very small quantity of oil of 1～3cc per one hour, make oil mist of 1～2μm eness Between pin Dia. and machining while jetting in cutting edge. Squar

The variation of between pin dia is small

0.05 ofile Between pin Dia Pr

Before Heat- After MQL Broach heat-treatment treatment Hard Broaching Lead The Surface of Broaching

Between Pin Dia

NBM-5008 45 46 Technical Introduction Technical Introduction

Realize finishing of 50-60 HRC herdend material Fruit broaching Realize MQL broaching for time is high efficiency for one second. the first time in the world Hard Broaches Broach for MQL

Applications Involute Spline, Involute Serratrion oaches oaches Br Br

Features MQL Broaching Realize a small amont of coolant broaching by turning cutting oil into mist. Hard Broach Conventional Oil + Conventional Broach mm MQL Semi-dry + MQL Broach 0.10

0.08

Work Cutting conditions Broaching speed 5m/min oaches No.of teeth : 24 Cutting depth 0.06mm/Dia Normal Module : 1 d Br Normal Pressure Angle : 45˚ Conventional oach for MQL Har

Use a very small quantity of oil of 1～3cc per one hour, make oil mist of 1～2μm eness Between pin Dia. and machining while jetting in cutting edge. Squar

The variation of between pin dia is small

0.05 ofile Between pin Dia Pr

Before Heat- After MQL Broach heat-treatment treatment Hard Broaching Lead The Surface of Broaching

Between Pin Dia

NBM-5008 45 46 Technical Introduction Technical Introduction

Realize balance and excellent accuracy Realize Broaching of Module 0.245 Off-normal Gullet Helical Broach PAT� . Micro Module Broaching�

Off-normal Gullet" Helical Broach is the best broach to ensure accuracy of Best for highly accuracy broaching of a micro module� internal helical gears.� �Apply to a standard gear of whole depth 2.25m The angular design of gullet provides the best balanced cutting.� Improve accuracy of workpiece and tool life. oaches oaches

Br Assembly type Br

Applications Compactification of planetary gear

Solid type 1.0mm 0.14mm T=0.49mm

NT=93

22.5mm 0.18mm 23.65mm oduction oduction 23.65mm � echnical Intr echnical Intr T T Applications

Internal Helical gears of Automatic Transmission � oach

Internal helical gear NBV-3-6 MNC oaching � Features Profile error Lead error The lead error is improved by locating finishing

Comparison of Lead Error o Module Br teeth on spiral gash. (off-normal gullet) PAT. Left Right Left Right Gullet Comparison of Lead Error Micr f-normal Gullet Helical Br Right Of 0.01mm 0.01mm

Left Conventional Gullet

Right

Cutting conditions

Machine� Vertical Machine NBM 5008� Cutting Oil� Mist� �

f-normal Gullet Left

Of Work� SCM 435� Broach Length� 900mm (Length of Cutting Teeth 290 mm)�

Cutting speed 3m/min Pulling Load 8.8KN (0.9Ton)

47 48 Technical Introduction Technical Introduction

Realize balance and excellent accuracy Realize Broaching of Module 0.245 Off-normal Gullet Helical Broach PAT� . Micro Module Broaching�

Br Assembly type Br

Applications Compactification of planetary gear

Solid type 1.0mm 0.14mm T=0.49mm

NT=93

22.5mm 0.18mm 23.65mm oduction oduction 23.65mm � echnical Intr echnical Intr T T Applications

Internal Helical gears of Automatic Transmission � oach

Internal helical gear NBV-3-6 MNC oaching � Features Profile error Lead error The lead error is improved by locating finishing

Comparison of Lead Error o Module Br teeth on spiral gash. (off-normal gullet) PAT. Left Right Left Right Gullet Comparison of Lead Error Micr f-normal Gullet Helical Br Right Of 0.01mm 0.01mm

Left Conventional Gullet

Right

Cutting conditions

Machine� Vertical Machine NBM 5008� Cutting Oil� Mist� �

f-normal Gullet Left

Of Work� SCM 435� Broach Length� 900mm (Length of Cutting Teeth 290 mm)�

Cutting speed 3m/min Pulling Load 8.8KN (0.9Ton)

47 48 Guidance Guidance

Terms Keyway Broach

Internal Broaches Semi-Finishing Teeth

Overall Length Finishing Teeth Shank Length Length of Cutting Teeth

Semi- Finishing Teeth Finishing Teeth Front Pilot Roughing Teeth Shank Diameter First Cutting Teeth Retriever End Front Pilot Rear Pilot Height of Finishing Teeth Pull End Pull End Bottom Face Tooth Width

Roughing Teeth

Front Shank Length Length of Cutting Teeth Rear Shank Length Broach Width oaches oaches Br Br Overall Length Tooth Cross Section

Types of Pull Ends Types of Retriever Ends Slab Broach (1) Cotter Type (3) Threaded Type (1) RoundNeck Type

(2) Jaw/ Claw Type (4) Pin Type (2) Jaw/ Claw Type Helix Angle Overall Length

Length of Cutting Teeth Guidance Guidance (3) Trapezoid Type (Flat Type) Roughing Teeth Tooth Width Semi- Finishing Finishing Teeth Teeth

Roughing teeth The cutting teeth to conduct main cutting. Height of Finishing Teeth Bottom Face Broach Width Semi-finishing teeth The cutting teeth having small cutting amount to be arranged before the finishing teeth.

The cutting teeth to finishing the workpiece to the specific dimensions . Finishing teeth These are constituted usually with several cutting teeth of the same dimensions. Further, the cutting teeth after second one are called also as preparatory teeth. Gullet

Pitch Land Width

Relief Angle

Depth of Gullet

Tooth Radius

Face Angle

49 50 Guidance Guidance

Terms Keyway Broach

Internal Broaches Semi-Finishing Teeth

Overall Length Finishing Teeth Shank Length Length of Cutting Teeth

Roughing Teeth

Front Shank Length Length of Cutting Teeth Rear Shank Length Broach Width oaches oaches Br Br Overall Length Tooth Cross Section

Types of Pull Ends Types of Retriever Ends Slab Broach (1) Cotter Type (3) Threaded Type (1) RoundNeck Type

(2) Jaw/ Claw Type (4) Pin Type (2) Jaw/ Claw Type Helix Angle Overall Length

Length of Cutting Teeth Guidance Guidance (3) Trapezoid Type (Flat Type) Roughing Teeth Tooth Width Semi- Finishing Finishing Teeth Teeth

Pitch Land Width

Relief Angle

Depth of Gullet

Tooth Radius

Face Angle

49 50 Guidance Guidance

Internal broaching machine Broaching

Vertical internal broaching machine Lifter Broach transfer type Retrieving head (1) (2) (3) (4) (5) (6)

Loading Initial positioning Broaching Unloading Setting Retrieving head Returning cycle Broach

Work

Broach Work

Retrieving head oaches oaches

Br Bolster Br

Work piece

Pull head

Surface broaching machine Pull head

Ram

Guidance Broach holder Guidance

Broach Work transfer type

(1) (2) (3) (4) (5) Work Loading Initial positioning Broaching Unloading Returning cycle (setting pull head)

Work support

Broach

Work support of keyway broaching

Work piece Work Table

Broach horn broach horn

Bolster liner

Keyway broach Bolster Pull head

51 52 Guidance Guidance

Internal broaching machine Broaching

Vertical internal broaching machine Lifter Broach transfer type Retrieving head (1) (2) (3) (4) (5) (6)

Loading Initial positioning Broaching Unloading Setting Retrieving head Returning cycle Broach

Work

Broach Work

Retrieving head oaches oaches

Br Bolster Br

Work piece

Pull head

Surface broaching machine Pull head

Ram

Guidance Broach holder Guidance

Broach Work transfer type

(1) (2) (3) (4) (5) Work Loading Initial positioning Broaching Unloading Returning cycle (setting pull head)

Work support

Broach

Work support of keyway broaching

Work piece Work Table

Broach horn broach horn

Bolster liner

Keyway broach Bolster Pull head

51 52 Internal Broaches Internal Broaches

Internal Broaching Internal Broaching Process Round Broaches As for the internal broach, shape of indispensability can finish the inside of the cover crops. Internal Broaches A lower hole is opened to the cover crops beforehand and usually machines it Round broaches are finishing broaches used for highly through an internal broach in this hole. precise round holes. There is burnishing broach to improve surface finish.

Work oaches Work piece sample Involute Spline Broaches oaches Br Br

Involute Spline Broaches are used in automotive mass- production. There are three types of broaches with round teeth at the Round Broach Special Spline Broach front, round teeth at the end and alternating spline and round teeth to decrease the eccentricity on the minor and major diameter of a spline.

Square Broach Serration Broach

Round teeth at the front oaches oaches nal Br nal Br Inter Inter Parallel Side Spline Broach Round teeth at the end

oaches Alternating spline and round teeth oaches nal Br Special Shape Broach Involute Spline Br Parallel Side Spline Broaches

ork Piece Samples of Inter In track part or machine part production, W Parallel Side Broaches are mainly used, There are broaches with round teeth as well as Involute Spline Broaches.

Round teeth at the end

53 54 Internal Broaches Internal Broaches

Work oaches Work piece sample Involute Spline Broaches oaches Br Br

Square Broach Serration Broach

Round teeth at the front oaches oaches nal Br nal Br Inter Inter Parallel Side Spline Broach Round teeth at the end

oaches Alternating spline and round teeth oaches nal Br Special Shape Broach Involute Spline Br Parallel Side Spline Broaches

ork Piece Samples of Inter In track part or machine part production, W Parallel Side Broaches are mainly used, There are broaches with round teeth as well as Involute Spline Broaches.

Round teeth at the end

53 54 Internal Broaches Internal Broaches

Push Broaches Helical Broaches

Broaching is generally done by pulling, but in cases All of internal helical gears of automotive AT are where the cutting stock is small. Push Broaches will be fabricated by this helical broaches. This assembly used. broach design has a front roughing section and a removable floating shell-type finishing section with full involute teeth in rear section.

Assembly type oaches oaches Complicated Formed Spline Broaches Br Br

Various complicated formed broaches can be manufactured such as Outer Rotor Spline Broach and others. Solid type

Cutting Method oaches oaches Built-up Broaches nal Br nal Br Inter Inter This broach is assembled of some broaches and used instead of solid broach to obtain more tool life and more accuracy of workpiece. Roughing teeth Finishing teeth oaches oaches Push Br Helical Br

Large Diameter Broaches

NACHI can manufacture broaches with an outside diameter of 300mm and a weight of 500kg, and precise shell-type broaches for internal gears.

55 56 Internal Broaches Internal Broaches

Push Broaches Helical Broaches

Assembly type oaches oaches Complicated Formed Spline Broaches Br Br

Various complicated formed broaches can be manufactured such as Outer Rotor Spline Broach and others. Solid type

Large Diameter Broaches

NACHI can manufacture broaches with an outside diameter of 300mm and a weight of 500kg, and precise shell-type broaches for internal gears.

55 56 Surface Broaches Surface Broaches

Surface Broaching Surface Broaching Process Connecting Rod Broaches Used to remove metal from an external surface to produce a flat or contoured This is a broach to cut connecting rod and cap which is main part of engines. surface. It is more economical than milling cutter because of broaches allows NACHI can design and manufacture broaches and also broach holders. roughing and finishing operation be continued. Surface Broach

Work

Connecting Rod & Cap oaches oaches Br Br

Workpiece Sample Connecting Rod Cutting Method

♯7 ♯8 ♯9 ♯10 ♯23 ♯11 ♯1～♯6 ♯12 ♯13 ♯14

♯19 ♯20 ♯21 ♯22

♯15 ♯17 ♯16 ♯18 oaches oaches Surface Br Surface Br Disc Brake Broaches

oaches Mounting for Disk Brake oaches Connecting Rod Br ork Piece Samples of Surface Br W

NSL-T Series

57 58 Surface Broaches Surface Broaches

Work

Connecting Rod & Cap oaches oaches Br Br

Workpiece Sample Connecting Rod Cutting Method

♯7 ♯8 ♯9 ♯10 ♯23 ♯11 ♯1～♯6 ♯12 ♯13 ♯14

♯19 ♯20 ♯21 ♯22

♯15 ♯17 ♯16 ♯18 oaches oaches Surface Br Surface Br Disc Brake Broaches

oaches Mounting for Disk Brake oaches Connecting Rod Br ork Piece Samples of Surface Br W

NSL-T Series

57 58 Surface Broaches Surface Broaches

Fir Tree Type Broaches Steering Rack Broaches These broaches are suitable for turbine rotor disk blade groove This is used in broaching of automobile steering rack. broaching of aircraft, ships and generators. Turbine rotors discs NACHI can manufacture broaches such as variable tooth thickness have a number of grooves in a christmas tree shapes which require type, form relief type and inserted blade type. high accuracy and their material is usually very hard to cut. NACHI can manufacture highly precise chrismas tree type broaches. oaches oaches Br Br

Steering Rack Broaches

Fir Tree Broach Cutting Method

Steering Rack Bar oaches Roughing Broach oaches Surface Br Semi-Finishing Broach Surface Br

Finishing Broach

SV-20-23M oaches oaches ype Br

ee T Turbo fan engine Fir Tr Steering Rack Br

TSL-7.5-15

59 60 Surface Broaches Surface Broaches

Steering Rack Broaches

Fir Tree Broach Cutting Method

Steering Rack Bar oaches Roughing Broach oaches Surface Br Semi-Finishing Broach Surface Br

Finishing Broach

SV-20-23M oaches oaches ype Br

ee T Turbo fan engine Fir Tr Steering Rack Br

TSL-7.5-15

59 60 Design of Broach Design of Broach

Main Design of Broach Calculation of Pulling Load ●Estimated Load（kN）＝Width of Cut（mm） Basic Design × Cutting depth/Tooth（mm） × Number of engaged cutting teeth × Specific cutting resisitance（kN/mm2） 1. Pull End Shape ●Safty Load（kN）＝1.8 × Estimated Load This is determined based upon the broaching machine pull An example calculation head. Parallel side spline：20×16×4×6SP 2. Retriever End Shape Material：Alloy Steels, Length of Cut=25mm This is determined based upon the broaching machine retriever ●Pitch＝1.5×√25=7.5 head. ●Number of Engaged Cutting teeth=25/7.5=3.3 → 4 3. Tooth Pitch ●Cutting Depth/Tooth ＝ 0.025mm ・Pitch(P)=1.2～2.0√L ●Specific Cutting Force ＝ 2.94kN/mm2 ・The pitch is determined so that the chip do not become ●Estimated Load ＝（4×6）×0.025×2.94×4＝7kN jammed in the chip space. The chip space must be larger 6 ●Safty Load ＝ 1.8×7＝12.6kN times than chip volume. ・Number of engaged cutting teeth(n) Cutting depth/Tooth (μm) Normally more than 2 teeth cut at the same to time. Work Material Specific cutting Force Round Broach Spline Broach Surface Broach (kN/mm2) oaches oaches n=L/P (raise decimals and above to the whole number) Br Br Carbon Steels 10～20 25～30 30～70 2.94～3.92

Alloy Steels 10～20 25～30 30～70 2.94 L 1 2 Cast Irons 25～40 25～40 50～75 1.96 Length of Cut Length of Cut : L＝ 1 + 2 Malleable Cast Irons 25～35 25～35 50～75 1.35～2.94

Stainless Steels 20～30 20～30 30～60 3.92

Chip Space≧Chip Volume×6 Non-ferrous Alloys 35～50 30～40 60～100 0.98～1.96

Workpiece t Broach Length and Machine Stroke

Chip Volume (L×t) Broach length is limited by machine stroke and fixture Chip Space ●Length of Cutting Teeth ＋ Rear Shank Length ＜ Max. machine stroke － Length of Cut oach oach ●Required stroke = Length of Cutting Teeth ＋ Rear Shank Length ＋ Length of Cut ＜ Max. machine stroke Design of Br Design of Br Length of cut Width of cut

Number of Engaged Cutting Teeth A Rear Shank Length oke length Length of cutting teeth Length of cut Str Length of work support Shank Length CB Cutting Method Cutting methods can be divided generally into, normal cutting, outline cutting and progressed cutting.

Normal Cut (Outside diameter up) Form Cutting Progressed Cut

Broach Length(Max) = A(Max) － (Length of Work Support + Length of Cutting Teeth) Broach Length(Min) = B(Min) － C(Min) Width of Cut

RISE/tooth Cutting Stock

RISE/tooth RISE/tooth

61 62 Design of Broach Design of Broach

Alloy Steels 10～20 25～30 30～70 2.94 L 1 2 Cast Irons 25～40 25～40 50～75 1.96 Length of Cut Length of Cut : L＝ 1 + 2 Malleable Cast Irons 25～35 25～35 50～75 1.35～2.94

Stainless Steels 20～30 20～30 30～60 3.92

Chip Space≧Chip Volume×6 Non-ferrous Alloys 35～50 30～40 60～100 0.98～1.96

Workpiece t Broach Length and Machine Stroke

Normal Cut (Outside diameter up) Form Cutting Progressed Cut

Broach Length(Max) = A(Max) － (Length of Work Support + Length of Cutting Teeth) Broach Length(Min) = B(Min) － C(Min) Width of Cut

RISE/tooth Cutting Stock

RISE/tooth RISE/tooth

61 62 Design of Broach Design of Broach

Face Angle, Relief Angle Finished size of broaches Work Material Face Angle Relief Angle Generally, it is set its target size of broach to the upper limit of the Low Tensile Strength 13～20˚ 2˚ tolerance band of the work piece. Relief Angle +33 Steels Mid Tensile Strength 10～15˚ 2˚ For example, if the finished size of the work piece is φ25 0 , then set the target size of the broach to φ25.033. High Tensile Strength 10～13˚ 2˚ However, if the work piece has a large tolerance, use a target Cast Iron, Malleable Cast Iron 10˚ 2˚ value that is 20% smaller than the maximum tolerance of the Bronze, Brass 3˚ 0.5˚ work piece.

Alminum Alloys 15～20˚ 2˚ The actual finishing size of work piece is affected by its hardness, shape, cutting length as well as the thickness of the part and the cutting conditions (cutting speed cutting, cutting fluid etc.) which Face Angle may change the dimensions of the work piece after broaching. Because of this, set the broaches target size a little larger in advance, and do a few trials to decide with consideration to what is needed. oaches oaches Br Br Side Relief The relief to relieve from the form cut with remaining the part near the cutting edge. Tolerance Zone of Broach Side relief Tooth profile If tolerance is large, use size to have Tooth profile Maximum Limit of Size a small 20% than the work piece tolerance upper limit. Side relief Side relief angle Tolerance Zone of Work

Least Limit of Size

Form Relief oach oach The relief to relieve by the same form as the tooth profile . Form relief Example of Thin Woll Thickness Design of Br Design of Br

Finished form Example of deformation after the broaching The work materials while broaching in order to receive thrust, plastic deformation occurs. Because of that, the work materials after the broaching have the case that becomes smaller than the finished size of broaches.

Back taper The back taper is a method for making back tapered side relief on a broach for splines, serrations and involute splines.

63 64 Design of Broach Design of Broach

Least Limit of Size

Form Relief oach oach The relief to relieve by the same form as the tooth profile . Form relief Example of Thin Woll Thickness Design of Br Design of Br

Back taper The back taper is a method for making back tapered side relief on a broach for splines, serrations and involute splines.

63 64 Essential Points and Notice � for Broaching Process Pull End

Workpiece Hardness Jaw Pull End Standard Dimensions

Part hardness of 200～230HB is generally used for broaching, � however parts with a hardness up to 300HB are widly broached. � If extremely soft steel is broached, it causes tearing on the surface on part.� L = L 1 + Hardness over 300HB shortens the tool life. E H A B C 45°� 45°� 1 D Cutting Speed D

Cutting Speed infuences the accuracy, the workpiece roughness and tool life. � = Pull Fixture Thickness (30mm) The table right shows recommended cutting speed.

Unit : mm

oaching Pr � －0.15� 110 � chlorine-free coolants are also supported. Specifically types of improving work environments, eliminating cleaning processes, � � � 37� ＜d≦41� 36� 27 � � � � � 31 � 220� –� 210� 220� cutting fluids that contain large amounts of inorganic additives, reducing energy, and increasing tool life. � � � 0� � � 41� ＜d≦47� 40� 30 � � � � � 34.5� 280� –� 225� 235� －0.039� � � MQL : Minimum Quantity of Lubrication � � －0.08� 47� ＜d≦52� 45� 34 � 20� 40� 6� � 39 � 360� –� 225� 235� � � 120 －0.142� � � � 52� ＜d≦57� 50� 38 � � � � � 43.5� 450� –� 225� 235� � � � � � � 57� ＜d≦62� 55� 41 � � � � � 48 � 550� –� 235� 245� Work Material� Cutting Fluids� � � � � 0� � d Dimensions 62� ＜d≦67� 60� 45 � 25� � 8� � 53 � 630� –� 235� 245� Steels� Active sulfur type oil� � －0.20� �

Essential Points and Notice for Br 140 0� � � Stainless steels� Active sulfur type oil� 67� ＜d≦72� 65� 48 � � 50� � � 57 � 720� –� 235� 245� －0.046� � －0.1� －0.174� Cast Iron� Water soluble Oil or Dry� 72 ＜d≦78� 70� � 52 � � � � � � 60 � 850� –� –� 255� � � � Copper Alloy� Compound Oil� 30 10 170 d＞78 75 � 56 � � � � � � 65 � � 1000 –� –� 255 � � Alminum Alloys Water soluble Oil Jaw Pull End Standar As Length to Front Pilot is changed by type of Broaching Machine, it's necessary to select by next table.

Type Applicable Broaching Machine

1� NBV-5, 7.5 NBM BV-T5, T7.5, T10 NUV-10�

2� NUV-15�

3 BV-T15, T20 NUV-20

65 66 Essential Points and Notice � for Broaching Process Pull End

Workpiece Hardness Jaw Pull End Standard Dimensions

Cutting Speed infuences the accuracy, the workpiece roughness and tool life. � = Pull Fixture Thickness (30mm) The table right shows recommended cutting speed.

Unit : mm

Work Material Cutting Speed Pre-broached� Shank� Neck� Length� Neck� Chamfer� Flat� Flat� Max.� Length to Front Pilot� oaches Hole� Diameter� Diameter� to Neck� Length� Length� Width� Height� Load� oaches Steels 3～8m/min L Br Diameter� � � � � � � � Permitted� Br Tough 2～5m/min � � � � � � � � � Stainless Steels d D D1 A B C E H (kN) Type1 Type2 Type3 Free Machining 6～8m/min 0� � －0.04� 10.5�＜d≦12.5� 10� 7.5 � � � � � 8.5� 10� 150� 170� 180� Cast Iron, Malleable Cast Iron 10m/min －0.022� 0� －0.076� � －0.08� � 12.5�＜d≦14.5� 12� 9 � 12� 25� 3� 80� 10.5� 20� 150� 170� 180� Bronze, Brass 10m/min � � � � Alminum Alloys 10m/min 14.5�＜d≦16.5� 14� 10.5 � � � � � 12 � 30� 150� 170� 180� 0� � � � �－0.027 � －0.05� Magnesium 10m/min 16.5�＜d≦18.5� 16� 12 � � � � � 13.5� 40� 160� 180� 190� � � －0.093� � 0� � 18.5�＜d≦20.5� 18� 13.5 � � 15 � 50� 160� 180� 190� � －0.10� 15� 30� 4 90� � � � � 20.5�＜d≦22.5� 20� 15 � � � � � 17 � 70� 170� 190� 200� � � � Cutting Fluids � � � 22.5�＜d≦26� 22� 16.5 � � � � � 18.5� 80� 170� 190� 200� 0� � � －0.033� � � Cutting fluid influences broach life, accuracy and efficiency, which are not inferior in terms of maintaining performance in piece 26� ＜d≦29� 25� 19 � � � � 21.5� 110� 180� 200� 210� � � －0.065� ocess 100� according to what type it is. It is essential to select a suitable cutting count, machining active sulfuric chloride with its large amounts of � � －0.117� 29� ＜d≦33� 28� 21 � � 24 � 130� 180� 200� 210� Pull End fluid depending on the work piece material. The table, on the under chlorine.� � � 18� 35� 5 � � � 0� � table, shows recommended cutting fluids. Environmentally friendly On top of that, we have extensive experience in MQL machining, 33� ＜d≦37� 32� 24 � � � � � 27.5� 180� –� 210� 220� oaching Pr � －0.15� 110 � chlorine-free coolants are also supported. Specifically types of improving work environments, eliminating cleaning processes, � � � 37� ＜d≦41� 36� 27 � � � � � 31 � 220� –� 210� 220� cutting fluids that contain large amounts of inorganic additives, reducing energy, and increasing tool life. � � � 0� � � 41� ＜d≦47� 40� 30 � � � � � 34.5� 280� –� 225� 235� －0.039� � � MQL : Minimum Quantity of Lubrication � � －0.08� 47� ＜d≦52� 45� 34 � 20� 40� 6� � 39 � 360� –� 225� 235� � � 120 －0.142� � � � 52� ＜d≦57� 50� 38 � � � � � 43.5� 450� –� 225� 235� � � � � � � 57� ＜d≦62� 55� 41 � � � � � 48 � 550� –� 235� 245� Work Material� Cutting Fluids� � � � � 0� � d Dimensions 62� ＜d≦67� 60� 45 � 25� � 8� � 53 � 630� –� 235� 245� Steels� Active sulfur type oil� � －0.20� �

Type Applicable Broaching Machine

1� NBV-5, 7.5 NBM BV-T5, T7.5, T10 NUV-10�

2� NUV-15�

3 BV-T15, T20 NUV-20

65 66 Pull End Pull End

Cotter Pull End Standard Dimensions Threaded Pull End Standard Dimensions

W L = L 1 + 2 L = L 1 + 1

E T H A B C H d D W

B A = Pull Fixture Thickness (30mm) = Pull Fixture Thickness� 2 ＞Part Length×2

Unit : mm Unit : mm

Pre-broached� Shank� Length to� Cotter� Cotter� Chamfer� Flat� Flat� Max.� Keyway Width W� Minimum� Height of� Broach� Thread Size� Thread � Max.� Hole� Diameter� Cotter� Hole� Hole� Length� Width� Length� Load� Length to Front Pilot� ×� Diameter� Finshing� Width� � Length� Load� Length to Front Pilot� oaches L L oaches

Br Diameter� � Hole� Length� Width� � � � Permitted� Keyway Depth T � Teeth� � � � Permitted� Br � � � � � � � � � � � � � � � d D A B W C H E (kN) Type1 Type2 Type3 A H B d 1 (kN) Type1 Type2 Type3 0� � 10.5� ＜d≦12.5� 10� 16� 16� 3� � 9� � 20� 170� 190� 220� 3×1.5� 10� 9� � � 20� 10� 125� 145� 175� －0.022� � � � 12.5� ＜d≦14.5� 12� � � 3.5� 3� 10� 50� 30� 175� 195� 225� 3×1.5� 12� 10� 5� M6×1.0� 20� 10� 125� 145� 175� � 18 0� －0.012� 14.5� ＜ ≦ 14� 4� � 12� � 40� 175� 195� 225� × 10� 9� � d 16.5� � � 4 2 � � 20� 10� 125� 145� 175� 0� 18� � －0.027� � 16.5� ＜d≦18.5� 16� � � 5� � 14� � 50� 180� 200� 230� 4×2 � 12� 10� 6� � 25� 12� 130� 150� 180� � 20 55 � � � 18.5� ＜d≦20.5� 18� � � 5.5� � 16� � 60� 180� 200� 230� 4×2 � 15� 13� M8×1.25� 25� 12� 130� 150� 180� � 4 7� � � � 20.5� ＜d≦22.5� 20� � � � � 18� � 70� 185� 205� 235� 5×2.5� 13� 11� � � 25� 12� 130� 150� 180� � 25 6.5 60 � � 0� 22.5� ＜d≦26� 22� � � � � 20� � 100� 185� 205� 235� 5×2.5� 15� 13� 8� � 30� 19� 135� 155� 185� 0� －0.015� －0.033� � 26� ＜d≦29� 25� � � � � 22� 65� 130� 195� 215� 245� 5×2.5� 18� 16� � M10×1.5� 30� 19� 135� 155� 185� � 20 7 9 � � � Pull End 29� ＜d≦33� 28� � 32� � � 25� � 170� 195� 215� 245� 6×3 � 18� 16� � � 30� 19� 135� 155� 185� Pull End � 5 70 � � 0� 33� ＜d≦37� 32� � � 8� � 28� � 230� 195� 215� 245� 6×3 � 22� 19� 11� M12×1.75� 35� 28� 145� 165� 195� � －0.018� � 0� 37� ＜d≦41� 36� � � 9� � 33� � 280� 205� 225� 255� 7×3.5� 18� 16� 9� M10×1.5� 30� 19� 140� 160� 190� � －0.015� 0� � 41� ＜d≦47� 40� 22� 40� 11� � 36� 80� 340� 205� 225� 255� 7×3.5� 22� 19� 11� M12×1.75� 35� 28� 145� 165� 195� －0.039� � � 47� ＜d≦52� 45� � � � 13� 6� 40� � 420� 205� 225� 255� 8×3.5� 24� 21� 12� M14×2.0� 40� 39� 150� 170� 200� � 0� －0.018� 52� ＜d≦57� 50� � � � � � 45� � 530� 215� 235� 265� 10×4 � 30� 26� 15� M16×2.0� 40� 54� 150� 170� 200� � � 45 14 90 � 57� ＜d≦62� 55� � � � � � 50� � 660� 215� 235� 265� 12×4 � 40� 32� 17� M18×2.5� 50� 66� 160� 180� 210� � � d Dimensions 25 d Dimensions 0� 62� ＜d≦67� 60� � � � � 8� 55� � 770� � � 270� 15×5.5 50 36 19 M20×2.5 50 85 160 180 210 －0.021 � 50 16 100

67� ＜d≦72� 65� 0� � � � � 58� � 950� � � 270� －0.046� As Length to Front Pilot is changed by type of Broaching Machine, it's necessary to select by next table. 72 ＜d≦78� 70� � � � � � 63� � 1080� � � 280� � 30 55 18 10 110 Type Applicable Broaching Machine d＞78 75 � � � � � 68 � 1270 � � 280 � 1� NBV-5, 7.5 NBM BV-T5, T7.5, T10 NUV-10� Cotter Pull End Standar As Length to Front Pilot is changed by type of Broaching Machine, it's necessary to select by next table. � � eaded Pull End Standar 2� NUV-15� Thr

Type Applicable Broaching Machine 3 BV-T15, T20 NUV-20

1� NBV-5, 7.5 NBM BV-T5, T7.5, T10 NUV-10�

2� NUV-15�

3 BV-T15, T20 NUV-20

67 68 Pull End Pull End

Cotter Pull End Standard Dimensions Threaded Pull End Standard Dimensions

W L = L 1 + 2 L = L 1 + 1

E T H A B C H d D W

B A = Pull Fixture Thickness (30mm) = Pull Fixture Thickness� 2 ＞Part Length×2

Unit : mm Unit : mm

Type Applicable Broaching Machine 3 BV-T15, T20 NUV-20

1� NBV-5, 7.5 NBM BV-T5, T7.5, T10 NUV-10�

2� NUV-15�

3 BV-T15, T20 NUV-20

67 68 Pull End Retriever End

Pin Pull End Standard Dimensions Spring Retriever End Standard Dimensions

L = L 1 +

45°� 45°� D H H D

C C R K G A = Pull Fixture Thickness (25mm) L

Unit : mm 45°� 45°� Pre-broached� Shank� Length� Chamfer� Pin Gullet� Gullet� Max.� Hole Diameter� Diameter� from Pin� Length� Height� Radius� Load� Length to Front Pilot� oaches L oaches Br � � Center� � � � Permitted� Br D � � � � � � � N d D A C H R (kN) Type1 Type2 � � � 3.3� ＜d≦� 3.7� 3.2� � � 2.2� � 2� � � C � � � 10 0.5 2.5 K G � 0� � 3.7� ＜d≦� 4.1� 3.6� � � 2.5� � 3� � � L � －0.1� � 145 165 � � � 4.1� ＜d≦� 4.6� 4� � � 2.8� � 4� � � � 12 � � 0� � ＋0.2� 4.6� ＜d≦� 5.1� 4.5� � � 3.2� � 5� � � Unit : mm －0.018� � 0� � � � 5.1� ＜d≦� 5.6� 5� � 1� 3.5� 3� 6� � � Pre-broached� Shank� Flat Width or� Length� Neck Length� Chamfer� Length to� Broach� � 0� � Hole Diameter� Diameter� Neck Diameter� to Neck� � Length� Rear Pilot� Weight� � －0.15� � 5.6� ＜d≦� 6.2� 5.5� 13� � 4� � 7� � � � � � � � � � Permitted� � � � � � � � � � � � � � � 6.2� ＜d≦� 7.2� 6� � � 4.5� � 9� 150� 170� d D H, N G K C L (kg) � � � � � � －0.006� � 7.2� ＜d≦� 8.2� 7� 14� � 5� 4� 13� � � 18＜d≦� 23� 15� 11� 16� 16� � 60� 12.6� � � � －0.033� � � 0� � � 0� Pull End 8.2� ＜d≦� 9.2� 8� 16� 1.5� 5.5� 4.5� 14� � � 23＜d≦� 29� 20� 14� 8� 17.5� 0� －0.2� � � －0.1� 20� 20� 70� －0.022� � � －0.007� � 29＜d≦� 35� 25� 18� � � � � 19.6� Retriever End 9.2� ＜d≦� 10.2� 9� 18� � 6.5� 5� 19� � � －0.04� � � � ＋0.3� 155 175 � � 0 � � 10.2� ＜d≦� 11.2� 10� 20� � 7� 5.5� 23� � � 35＜d≦� 41� 30� 22� � � � � 21.7� � � � � � 0� � 0� 11.2 ＜d≦� 12.5� 11� 22� 2� 8� 6� 29� � 41＜d≦� 47� 35� 26� � � � � 23.1� 0� －0.25 � －0.15� 25 25 10 80 160 180 � � －0.027 47＜d≦� 55� 40� 30� � � � � 51� d＞� 12.5 12 25 � 8.5 7� 35 � －0.009� � －0.048� � 55＜d≦� 65� 45� 34� � � � � 55� As Length to Front Pilot is changed by type of Broaching Machine, it's necessary to select � by next table. � � � � 65＜d≦� 75� 50� 38� � � � � 59� � 0� d Dimensions Type Applicable Broaching Machine d Dimensions � －0.2� 75＜d≦� 100� 60� 48� 30� 30� 12� 90 89 －0.01� � 1� NBV-5, 7.5 NBM BV-T5, T7.5, T10 NUV-10� －0.056 d＞� 100 75 63 � � � 105 2 NUV-15 Pin Pull End Standar Spring Retriever End Standar

69 70 Pull End Retriever End

Pin Pull End Standard Dimensions Spring Retriever End Standard Dimensions

L = L 1 +

45°� 45°� D H H D

C C R K G A = Pull Fixture Thickness (25mm) L

69 70 GPA

GPA Engineering provides total solutions for gear cutting systems.

Recently in the automotive sector, concerns for the environment, energy savings, and greater comfort are increasing. This is pushing the need to produce precision gears to a new level and driving demand for machinery and machine tools in both packaged and full turnkey systems. To meet this demand, GPA Engineering is fusing "tools" and "machine tools", the two core elements of the manufacturing industry. Kashifuji, KANZAKI, and NACHI have combined their capabilities to jointly develop and propose tools, machine tools, and more efficient production line designs. Moreover, combining engineering and support services makes it possible to provide a full turnkey delivery that satisfies customer requirements and schedules. GPA Engineering provides full support, from facilities design through after-sales service.

Gear Cutting Process Task Assignments for Tools and Machinery Core technologies

Gear cutting, dry cutting, Materials Heat Inner end Hard hob for gears treatment surface cutting cutting conditions grinding and synchronicity

Turning Broaching Hob Shaving Heat Inner end Honing Inspection work cutting treatment surface grinding A A GP GP

Nachi Nachi Kashifuji

Cutting Gear cutting Kanzaki不二越 Nachi不二越 Kashifuji不二越 Kanzaki不二越 Kanzaki不二越 Nachi Nachi Kanzaki不二越住友電工 equipment tools

Hobbing machines, Hobs, shaving cutters, shaving machines, broaches, dress gears broaching machines and honing machines

Nachi Nachi Nachi Nachi Nachi Nachi Sumitomo Electric Hardmetal Corp.

Nachi Kashifuji Nachi

72 GPA

GPA Engineering provides total solutions for gear cutting systems.

Gear Cutting Process Task Assignments for Tools and Machinery Core technologies

Gear cutting, dry cutting, Materials Heat Inner end Hard hob for gears treatment surface cutting cutting conditions grinding and synchronicity

Turning Broaching Hob Shaving Heat Inner end Honing Inspection work cutting treatment surface grinding A A GP GP

Nachi Nachi Kashifuji

Cutting Gear cutting Kanzaki不二越 Nachi不二越 Kashifuji不二越 Kanzaki不二越 Kanzaki不二越 Nachi Nachi Kanzaki不二越住友電工 equipment tools

Hobbing machines, Hobs, shaving cutters, shaving machines, broaches, dress gears broaching machines and honing machines

Nachi Nachi Nachi Nachi Nachi Nachi Sumitomo Electric Hardmetal Corp.

Nachi Kashifuji Nachi

72 EUROPE ASIA and OCEANIA

Overseas Sales Companies CZECH BRANCH Overseas Sales Companies Overseas Manufacturing Companies Sezemicka 2757/2, VGP Park-A1 Prague 9,193 00, CZECH ●NACHI EUROPE GmbH Tel: +420-255-734-000 Fax: +420-255-734-001 ●NACHI SINGAPORE PTE. LTD. ●NACHI TECHNOLOGY (THAILAND) CO., LTD. Bischofstrasse 99, 47809, Krefeld, GERMANY No.2 Joo Koon Way, Jurong Town, Singapore 628943, 5/5 M, 2, Rojana Industrial Estate Nongbua, Ban Khai, Tel: +49-(0)2151-65046-0 Fax: +49-(0)2151-65046-90 U.K. BRANCH SINGAPORE Rayong, 21120, THAILAND URL: http://www.nachi.de/ Unit 7, Junction Six Industrial Estate, Electric Avenue, Tel: +65-65587393 Fax: +65-65587371 Tel: +66-38-961-682 Fax: +66-38-961-683 Birmingham B6 7JJ, U.K. SOUTH GERMANY OFFICE Tel: +44-(0)121-250-1890 Fax: +44-(0)121-250-1899 VIETNAM OFFICE ●NACHI INDUSTRIES PTE. LTD. Pleidelsheimer Strasse47, 74321, Bietigheim-Bissingen 614 Hong Bang Street, Ward 16, Dist 11, Ho Chi Minh City, No.2 Joo Koon Way, Jurong Town, Singapore 628943, Tel: +49-(0)7142-77418-0 Fax: +49-(0)7142-77418-20 VIETNAM SINGAPORE Overseas Manufacturing Companies Tel: +84-8-9602-303 Fax: +84-8-9602-187 Tel: +65-68613944 Fax: +65-68611153 SPAIN BRANCH URL: http://www.nachinip.com.sg/ Av. Alberto Alcocer 28, 1-A, 28036, Madrid, SPAIN ●NACHI CZECH s.r.o. ●FUJIKOSHI-NACHI (MALAYSIA) SDN. BHD. Tel: +34-(0)91-302-6440 Fax: +34-(0)91-383-9486 Prumyslova 2732, 440 01 Louny, CZECH No.17, Jalan USJ 21/3, 47630 UEP Subang Jaya, ●NACHI PILIPINAS INDUSTRIES, INC. Tel: +420-415-930-930 Fax: +420-415-930-940 Selangor Darul Ehsan, MALAYSIA 1st Avenue, Manalac Compound,Sta. Maria Industrial Estate, BARCELONA OFFICE Tel: +60-(0)3-80247900 Fax: +60-(0)3-80235884 Bagumbayan, Taguig, Metro Manilla, PHILIPPINES Josep Tarradellas, 58, 1-5, 08029 Barcerona, SPAIN Tel: +63-(0)2-838-3620 Fax: +63-(0)2-838-3623 Tel: +34-(0)93-430-6247 Fax: +34-(0)93-419-0807 ●PT.NACHI INDONESIA JI.H.R.Rasuna Said Kav.X-O Kuningan,Jakarta 12950, MANILA OFFICE INDONESIA Km23 East Service Road, Capang Muntinlupa, Tel: +62-021-527-2841 Fax: +62-021-527-3029 City Metro Manila, PHILIPPINES Tel: +63-(0)2-850-0864 Fax: +63-(0)2-850-0864 AMERICA ●NACHI (AUSTRALIA) PTY. LTD. Unit 1, 23-29 South Street, Rydalmere, N.S.W, 2116, ●建越工業股有限公司 AUSTRALIA NACHI C.Y. CORP. Overseas Sales Companies ●NACHI MEXICANA, S.A. DE C.V. Tel: +61-(0)2-9898-1511 Fax: +61-(0)2-9898-1678 No.109, Kao Young North Rd, Lung-Tan Hsin,Tao-Yuan Hsien, Urbina No.54, Parque Industrial Naucalpan, URL: http://www.nachi.com.au/ TAIWAN ●NACHI AMERICA INC. HEADQUARTERS Naucalpan de Juarez, Tel: +886-(0)3-47l-7651 Fax: +886-(0)3-471-8402 17500 Twenty-Three Mile Road, Macomb, Estado de Mexico C.P. 53370, MEXICO ●那智不二越（上海）貿易有限公司 Michigan, 48044, U.S.A. Tel: +52-55-3604-0832/0842/0081 Fax: +52-55-3604-0882 NACHI (SHANGHAI) CO., LTD. ●東莞建越精密軸承有限公司 Tel: +1-586-226-5151 Fax: +1-888-383-8665 Yitong Industry Zone 258, Fengmao Rd. Malu Town, Jiading, DONGGUAN NACHI C.Y. CORPORATION URL: http://www.nachiamerica.com/ Shanghai 201801, CHINA Dangyong Village, Hongmei Town Dongguan City, Overseas Manufacturing Companies Tel: +86-(0)21-6915-2200 Fax: +86-(0)21-6915-5427 Guangdong, CHINA INDIANA BRANCH Tel: +86-(0)769-8843-1300 Fax: +86-(0)769-8843-1330 715 Pushville Road, Greenwood, Indiana, 46143, U.S.A. ●NACHI TECHNOLOGY INC. ●NACHI-FUJIKOSHI CORP. Tel: +1-317-535-5527 Fax: +1-317-535-3659 713 Pushville Road, Greenwood, Indiana, 46143, U.S.A. TAIPEI REPRESENTATIVE OFFICE ●上海不二越精密軸承有限公司 Tel: +1-317-535-5000 Fax: +1-317-535-8484 3F No.276, Sec3, Chung Ching N. Road, Taipei, TAIWAN SHANGHAI NACHI BEARINGS CO., LTD. WEST COAST BRANCH URL: http://nachitech.com/ Tel: +886-(0)2-2596-0118 Fax: +886-(0)2-2596-5346 Yitong Industry Zone 258, Fengmao Rd. Malu Town, Jiading, 12652 E. AIondra Blvd. Cerritos, California, 90703, U.S.A. Shanghai 201801, CHINA Tel: +86-(0)21-6915-6200 Fax: +86-(0)21-6915-6202 Tel: +1-562-802-0055 Fax: +1-562-802-2455 ●NACHI MACHINING TECHNOLOGY CO. ●NACHI-FUJIKOSHI CORP. 17500 Twenty-three Mile Road, Macomb, KOREA REPRESENTATIVE OFFICE 2F Dongsan Bldg. 276-4, Sungsu 2GA-3DONG Sungdong-Ku. ●耐鋸（上海）精密刃具有限公司 MIAMI BRANCH-LATIN AMERICA DIV. Michigan, 48044, U.S.A. Seoul 133-831, KOREA SHANGHAI NACHI SAW CO., LTD. 2315 N.W. 107th Ave., Doral, Florida, 33172, U.S.A. Tel: +1-586-263-0100 Fax: +1-586-263-4571 Tel: +82-(0)2-469-2254 Fax: +82-(0)2-469-2264 Yitong Industry Zone 258, Fengmao Rd. Malu Town, Jiading, Tel: +1-305-591-0054/0059/2604 Fax: +1-305-591-3110 URL: http://www.nachimtc.com/ Shanghai 201801, CHINA ●NACHI-FUJIKOSHI CORP. Tel: +86-(0)21-6915-5899 Fax: +86-(0)21-6915-5898 ●NACHI ROBOTIC SYSTEMS INC. ● NACHI PRECISION NORTH CAROLINA INC. THAILAND REPRESENTATIVE OFFICE 22285 Roethel Drive, Novi, Michigan, 48375, U.S.A. 1836 Lindbergh Street Suite 400, Charlotte, North Carolina, Chai-ho Wongwaiwat Bldg. 889 Srinakarin Road, ●那智不二越（上海）精密工具有限公司 Tel: +1-248-305-6545 Fax: +1-248-305-6542 28208, U.S.A. Samutprakarn, 10270, THAILAND NACHI (SHANGHAI) PRECISION TOOLS CO., LTD. URL: http://www.nachirobotics.com/ Tel: +1-704-391-1511 Fax: +1-704-391-1648 Tel: +66-2-748-7322~4 Fax: +66-2-748-7325 Yitong Industry Zone 258, Fengmao Rd. Malu Town, Jiading, Shanghai 201801, CHINA ●NACHI CANADA INC. ●NACHI BRASIL LTDA. ~~ ●NACHI-FUJIKOSHI CORP. Tel: +86-(0)21-6915-7200 Fax: +86-(0)21-6915-7669 89 Courtland Ave., Unit No.2, Concord, Ontario, Avenida Joao XXⅢ, No.2330, Jardim Sao Pedro, INDIA REPRESENTATIVE OFFICE L4K 3T4, CANADA Mogi das Cruzes, S.P., BRASIL, CEP 08830-000 A/9A, Sector-16, Noida-201301, Distt. ●大成・NACHI油圧工業（株） Tel: +1-905-660-0088 Fax: +1-905-660-1146 Tel: +55-11-4793-8800 Fax: +55-11-4793-8870 Gautam Budh Nagar, U.P. INDIA DAESUNG-NACHI HYDRAULICS CO., LTD. URL: http://www.nachicanada.com/ URL: http://www.nachi.com.br/ Tel: +91-120-4272257 Fax: +91-120-4272256 289-22, Yousan-Dong, Yangsan-Si Kyungnam 626-800, KOREA Tel: +82-(0)55-385-7891~3 Fax: +82-(0)55-384-3270

●NACHI MOTHERSON TOOL TECHNOLOGY LTD. D-59-60, Sector-6, Noida 201301, Distt. Gautam Budh Nagar, U.P. INDIA Tel: +91-120-425-8372 Fax: +91-120-425-8374

Tokyo Head Office Shiodome Sumitomo Bldg. 17F, 1-9-2 Higashi-Shinbashi, Minato-ku, Tokyo 105-0021 Tel: +81-(0)3-5568-5111 Fax: 03-5568-5206 Web Site URL http://www.nachi-fujikoshi.co.jp/ E-mail [email protected] Toyama Head Office 1-1-1 Fujikoshi-Honmachi, Toyama 930-8511 Tel: +81-(0)76-423-5111 Fax: +81-(0)76-493-5211

CATALOG NO. T2301E 2009.04.Z-MIZUNO EUROPE ASIA and OCEANIA

●NACHI MOTHERSON TOOL TECHNOLOGY LTD. D-59-60, Sector-6, Noida 201301, Distt. Gautam Budh Nagar, U.P. INDIA Tel: +91-120-425-8372 Fax: +91-120-425-8374

CATALOG NO. T2301E 2009.04.Z-MIZUNO Precision Tools

Precision Tools Gear Cutting Tools & Broaches