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MODEL G0791 COMBINATION GUNSMITHING LATHE/MILL OWNER's MANUAL (For Models Manufactured Since 9/15)

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MODEL G0791 COMBINATION GUNSMITHING LATHE/MILL OWNER's MANUAL (For Models Manufactured Since 9/15) MODEL G0791 COMBINATION GUNSMITHING LATHE/MILL OWNER'S MANUAL (For models manufactured since 9/15) COPYRIGHT © MAY, 2015 BY GRIZZLY INDUSTRIAL, INC., REVISED MAY, 2017 (BL) WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC. #WKBB17270 PRINTED IN CHINA V2.10.17 Table of Contents INTRODUCTION ............................................... 3 SECTION 4: LATHE OPERATIONS .............. 32 Contact Info.................................................... 3 Operation Overview ..................................... 32 Manual Accuracy ........................................... 3 Chuck & Faceplate Mounting....................... 33 Identification ................................................... 4 Chuck Safety & Support Devices ................ 33 Controls & Components ................................. 5 Chuck Installation......................................... 34 Machine Data Sheet ...................................... 8 Chuck Removal............................................ 35 Scroll Chuck Clamping ................................ 36 SECTION 1: SAFETY ..................................... 11 Chuck Jaw Reversal .................................... 36 Safety Instructions for Machinery ................ 11 4-Jaw Chuck ................................................ 37 Additional Safety for Metal Lathes ............... 13 Faceplate ..................................................... 38 Additional Safety for Mills ............................ 14 Tailstock ....................................................... 39 Additional Lathe Chuck Safety..................... 15 Centers ........................................................ 43 SECTION 2: POWER SUPPLY ...................... 16 Joining Drill Chuck & Arbor .......................... 45 Steady Rest ................................................. 46 SECTION 3: SETUP ....................................... 18 Follow Rest .................................................. 47 Preparation .................................................. 18 Carriage & Slide Locks ................................ 47 Unpacking .................................................... 18 Compound Rest ........................................... 47 Needed for Setup ......................................... 18 Tool Post ...................................................... 48 Inventory ...................................................... 19 Spider ........................................................... 50 Cleanup ........................................................ 20 Manual Feed ................................................ 50 Site Considerations ...................................... 21 Spindle Speed.............................................. 51 Assembly ..................................................... 22 Understanding Gear Charts ......................... 52 Anchoring to Floor ....................................... 25 Power Feed.................................................. 55 Leveling ........................................................ 25 End Gears .................................................... 58 Lubricating Lathe ......................................... 26 Threading ..................................................... 61 Power Connection........................................ 26 Test Run ...................................................... 28 SECTION 5: MILL OPERATIONS .................. 64 Spindle Break-In .......................................... 30 Operation Overview ..................................... 64 Recommended Adjustments ........................ 31 Removing Compound Rest .......................... 65 Downfeed Controls ...................................... 66 Headstock Movement .................................. 67 Table Travel ................................................. 68 Installing/Removing Tooling ......................... 69 Spindle Speed.............................................. 71 SECTION 6: ACCESSORIES ......................... 72 SECTION 10: PARTS ................................... 101 Accessories ................................................ 101 SECTION 7: MAINTENANCE ......................... 76 Headstock Gearing .................................... 103 Schedule ...................................................... 76 Headstock Controls.................................... 105 Cleaning/Protecting ...................................... 76 Quick-Change Gearbox ............................. 107 Lubrication ................................................... 77 Apron ......................................................... 109 Machine Storage .......................................... 82 Saddle & Cross Slide ................................. 111 SECTION 8: SERVICE ................................... 83 Compound Rest & Tool Holder .................. 113 Troubleshooting ........................................... 83 Tailstock ..................................................... 114 Adjusting Backlash....................................... 86 Lathe Motor, Bed, & Stand ........................ 115 Adjusting Gib................................................ 87 Feed Rod ................................................... 117 Adjusting Half Nut ........................................ 89 Machine Labels & Cosmetics .................... 118 Tensioning/Replacing V-Belt........................ 89 Electrical Components ............................... 119 Installing/Removing Gap Insert .................... 90 Steady Rest ............................................... 120 Adjusting Spindle Bearing Preload .............. 91 Follow Rest ................................................ 120 Mill Headstock............................................ 121 SECTION 9: WIRING ...................................... 94 Column & Fine Downfeed .......................... 124 Wiring Safety Instructions ............................ 94 Wiring Overview ........................................... 95 SECTION 11: APPENDIX ............................. 125 Electrical Cabinet Wiring Diagram ............... 96 Feed Chart ................................................. 125 Lathe Motor Wiring Diagram ........................ 98 Thread Dial Chart ...................................... 125 Mill Motor & Work Lamp Wiring Diagram .... 99 Metric Threading Chart .............................. 125 Control Panel Wiring Diagrams ................. 100 Inch Threading Chart ................................. 125 WARRANTY & RETURNS ........................... 129 INTRODUCTION Contact Info Manual Accuracy Model G0791 (Mfd. Since 9/15) -3- Identification D E F G H I C J K L B M A N O U P T Q R S A. Quick-Change Gearbox Controls (see Page 5 K. Tailstock (see Page 6 for details) for details) L. Back Splash B. Headstock Controls (see Page 5 for details) M. Longitudinal Leadscrew C. End Gear and Belt Cover N. Feed Rod D. 3-Jaw Chuck O. Control Rod E. Halogen Work Light P. Chip Tray F. Mill Spindle Speed Shift Levers Q. Storage Cabinet G. Mill Vertical Travel Handwheel R. Stand Mounting Points (2 of 4) H. Fine Downfeed Handwheel S. Carriage (see Page 6 for details) I. Coarse Downfeed Handwheel T. Storage Cabinet J. Compound Rest Handwheel U. Quick-Change Tool Post -4- Model G0791 (Mfd. Since 9/15) A. Spindle Speed Levers: Used to select one Controls & of the nine spindle speeds. Components B. Feed Direction Lever: Controls rotation direction of leadscrew and feed rod. C. Metric Threading Chart: Displays the nec- essary configuration of gearbox levers and end gears for metric threading options. D. Emergency Stop/RESET Button: Stops all machine functions. Twist clockwise to reset. E. Spindle Speed Chart: Shows how to arrange Refer to Figures 1–5 and the following descrip- spindle speed levers for each of the nine tions to become familiar with the basic controls of spindle speeds. this machine. F. POWER Start Button: Enables power to Many of the controls will be explained in greater lathe/mill spindle motors after the emergency detail later in this manual. stop button is reset. Lathe Headstock & Quick-Change G. INCHING (Jog) Button: Rotates spindle as Gearbox long as it is pressed. H. POWER Lamp: Illuminates when lathe con- A trols are receiving power (Emergency Stop/ RESET button must be reset). B I. Mill FWD/REV Switch: Selects between forward and reverse mill spindle rotation. Setting the switch to the "Mill" position turns C D E F G H the mill OFF. I J. Headstock Feed Selection Lever: Selects leadscrew for threading operations or feed rod for power feed operations. J K. Quick-Change Gearbox Levers: Control the leadscrew and feed rod rotation speeds for threading and power feed operations. L. Inch Threading Chart: Displays the neces- sary configuration of gearbox levers and end gears for inch threading options. L K Figure 1. Headstock and quick-change gearbox controls. Model G0791 (Mfd. Since 9/15) -5- Carriage Tailstock W X Y V N M O U P Q Z T AA S R Figure 2. Carriage controls. Figure 3. Tailstock controls. M. Quick-Change Tool Post: Allows the opera- Y. Quill Handwheel: Moves quill toward or tor to quickly load and unload tools. away from spindle. 1 N. Compound Rest Handwheel: Moves tool Z. ⁄2" Square-Drive Lock-Down: Used with a toward or away from workpiece at the preset torque wrench for precise alignment of cen- angle of compound rest. ters. O. Carriage Lock Cap Screw: Secures car- AA. Tailstock Offset Screw (1 of 2): Adjusts riage in place for greater rigidity. tailstock offset left
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