A20 Sliding Headstock Type CNC Automatic Lathe The Citizen A20, an evolving 5-Axis CNC sliding head machine, furthers the quest for cost and performance featuring the ability to switch between guide bush and non-guide bush types.

Acclaimed for its excellent cost to performance ratio, the A20 has evolved as a 5-axis machine for 20mm diameter applications with the advantage that it can be used with or without a guide bush. It can be used as a regular guide bush automatic lathe when machining long slender workpieces, and without a guide bush for shorter parts with minimal bar end remnants. The guide bush can be quickly and simply mounted and removed.

The performance of the machine has been improved too. The high speed 10,000rpm spindle enables optimised machining operations on smaller diameter bar material. The machining length per chucking is now extended to 200mm enabling the number of re-chuckings and therefore cycle times to be reduced when machining long workpieces. As an option, bar material of up to 25mm diameter can also be machined extending the range of workpieces. Tooling System

Rotary tools for One rotary tool position cross machining is Quill Type 4 X1 Y1 Turning tools on Tools for front the gang tool post drilling 5 (12 mm Sq. , 13 mm Sq.) 4 (25.4 mm Dia.)

Z1

Triple end-face Triple both-end spindle face spindle BSE607 BSE707

X2 Z2 Rotary tools on the back tool post (option)

Tools for back drilling 8 (4+4, 25.4 mm Dia.)

A20 Tooling Example

Guide bush type

Switchable

Non-guide bush type LFV technology

LFV* is a technology for performing machining while vibrating the X and Z servo axes in the cutting direction in synchrony with the rotation of the spindle. It lessens the various problems caused by chips entangling with the product or tool, and is effective for small-diameter deep hole machining and the machining of difficult-to-cut materials.

*LFV is a registered trademark of Citizen Watch Co., Ltd. *Only LFV mode 1 available for A20.

Vibration mode Comparison of chips

Material: SUS304 Weight: 14.3 g (same scale)

Chips generated by Chips generated cutting using LFV by customary cutting

Variety of Machinable Geometries Vibration cutting can handle a variety of types of machining in addition to linear machining on faces, including tapers, arcs, and drilling. Vibration cutting can be turned ON and OFF just by inserting G codes into a program, giving relief from chip entanglement and problems with the tool nose, depending on the material being machined.

Horizontal face Vertical face Taper

Arc Drilling Along with machine performance, usability has also been upgraded. More speed, more stroke, more capacity = improved productivity.

The A20 features a new capability to switch between guide bush and non-guide bush operating modes. The machine's performance, including spindle speed and machining length per chucking, has been increased. It is designed for ease of use and convenience with good chip clearance for fast set-ups.

Maximum spindle speed of 200 mm/ 1 chucking Support for stock material 10,000 rpm. up to 25 mm diameter (option)

The maximum speed of the front spindle A longer 200mm machining stroke reduces With its spindle through hole diameter of is high at 10,000 rpm enabling optimized the need for re-chucking workpieces hence 26 mm, the A20 is capable of machining machining conditions on small diameter bar reducing cycle time. bar stock up to 25 mm dia. by installing the material or using small diameter cutting tools. optional 25 mm size chuck device - enabling a wider range of workpieces to be produced over the standard 20mm machine.

Coolant nozzle Parts collection Work light

Coolant nozzles are provided at the The large collection box reduces the Low energy illumination is provided as appropriate locations to ensure that sufficient frequency of emptying. The optional standard in the machining area giving an coolant can be supplied to the point of workpiece conveyor discharges to the left environment that is bright with ideal visibility. machining. front of the machine.

Coolant tank/chip collection box Adjustable operation panel USB/PC card slot

A 150-litre coolant tank is standard, enabling The pivoting operation panel enables easy NC programs can be input and output using extended periods of operation. The chip operation whilst simultaneously viewing the the USB slot or PC card slot on the front face outlet port has been increased to improve machining process. of the control panel. chip removal. Optional chip conveyors are available to suit the type of chip material. ClearClear for for Anyone Anyone MachineMachine Layout Layout Clear for Anyone ScreenScreen Display Display is isEasy Easy to to View View and and Read Read Screen Display is Easy to View and Read L2 L2 L1 L1 A20A20 Standard Standard Machine Machine 500 500

MachineMachine body body LoaderLoader 1185 1185 2285 2285

MaintenanceMaintenance area area 514 514 600 600

500 500 21202120 500 500 31203120

569 569 21202120 1820 1820 1050 1027 1050 1027

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IdleIdleIdle time time istime slashed is slashed is slashed using using the the pre-processingusing pre-processing the pre-processing function function in the in the ‘Cincom ‘Cincom function Control’ Control’ in that the that analyses 'Cincom analyses the the machining Control' machining program that program analyses MachineMachine body body before it is run to minimise processing and calculation times. LoaderLoader before it is run to minimise processing and calculation times. 1185 1185

the machining program before it is run to minimise processing and calculation times. 2285 2285 810 810 75 75 ConventionalConventional ConventionalConventional MaintenanceMaintenance area area

Zero 514 machine Zero machinemachine 514

machine 600 StopStop 600 pointpoint rotationrotation returnreturn

500 500 11391139 21202120 500 500 42594259

RotatingRotating IndexingIndexing 11391139 21202120 AxisAxis feed feed 680 680 569 569 10501050 11001100 10201020 overlapoverlap areas areas 258 258 3-color3-color signal signal tower tower ProductProduct z shelf z shelffor for long longworkpiece workpiece devicedevice A20A20 A20A20 WorkWork conveyor conveyor DirectDirect C-axisC-axis 466 indexingindexing 466 2152 ReducedReduced idle idle 2152 217 RotatingRotating functionfunction IndexingIndexing 217 1820 timetime 1820 208 208

DirectDirect C-axis C-axis indexing indexing function function AxisAxis feed feed overlap overlap function function 1050 1050 1027 1027 940 Direct C-axis indexing function Axis feed overlap function 940 758 DirectDirect C-axis C-axis indexing indexing enables enables deceleration deceleration direct direct to chosen to chosen index index position position TheThe next next axis axis feed feed motion motion starts starts without without waiting waiting for forcompletion completion of theof the current current 758 eliminatingeliminatingDirect C-axis the the wasted indexing wasted time timeenables of performing of performing deceleration zero zero return. direct return. to chosen index position motionThemotion next of axisanother of another feed axis. motion axis. This This startscuts cuts out without out wasteful wasteful waiting idle idle timefor time completion and and also also suppresses of suppresses the eliminating the wasted time of performing zero return. unwantedcurrentunwanted motion vibration. vibration. of another axis. This cuts out wasteful idle time and also suppresses unwanted vibration. 650 650 535 535 719 719 25402540 11851185 32593259 Chip Chipconveyor conveyor 0606 Cincom Cincom A20 A20 CincomCincom A20 A20 07 07 Clear for Anyone MachineMachine Layout Layout

Screen Display is Easy to View and Read L2 L1 A20 StandardStandard Machine Machine 500

Machine body Loader 1185 2285

Maintenance area 514 600

500 2120 500 3120

569 2120 1820 1050 1027

650 535 335 1085 1185 On-machine program check function Display of code list Easy viewing with text size change Using manual hand feed, operations can be The function displays the list of G, M, and T Two text size settings can be applied to each run in the forward or reverse directions, can codes including explanations-useful aid to screen (large text display illustrated). be paused to edit the program, and restart. programming. A20 Option-installedOption-installed Machine Machine L2 L1

500 995 925 Productivity Improvements 130 100

Idle time is slashed using the pre-processing function in the ‘Cincom Control’ that analyses the machining program Machine body before it is run to minimise processing and calculation times. Loader 1185 2285 810 75 Conven- Zero Conven- Maintenance area Stop 514 600 tional rotation point tional machine return machine

500 1139 2120 500 4259 Rotating Indexing Axis feed 1139 2120 680 569 1050 1100 1020 overlap areas 258 3-color signal tower Product z shelf for long workpiece device A20 A20 Direct Work conveyor C-axis

indexing 466 Rotating Reduced idle 2152

Indexing 217 function time 1820 208

Direct C-axis indexing function Axis feed overlap function 1050 1027 940

Direct C-axis indexing enables deceleration direct to chosen index position The next axis feed motion starts without waiting for completion of the 758 eliminating the wasted time of performing zero return. current motion of another axis. This cuts out wasteful idle time and also suppresses unwanted vibration.

650 535 719 2540 1185 3259 Chip conveyor 06 Cincom A20 Cincom A20 07 Machine Specification

Item A20VII (A20-3F7) Standard accessories 0P Max. machining diameter (D) 20 mm Dia. (25 mm Dia. ) Main spindle chucking device Coolant unit (with level detector) GB:200mm/1 chucking (188mm:25mm Lubricating oil supply unit (with Max. machining length (L) Back spindle chucking device Dia. spec.) GBL:2.5D. level detector) Max. front drilling diameter 10 mm Dia. Cut-off tool breakage detection Door lock Max. front tapping diameter (tap, die) M8 Work light (LED) Pneumatic device for air sealing Spindle through-hole diameter 26 mm Dia. Workpiece separator Machine relocation detector -1 Main spindle speed Max.10,000min Rotary guide bushing device Workpiece conveyor Max. drilling diameter for the gang rotary tool 7mm Dia. Knock-out jig for through-hole Coolant flow rate detector Max. tapping diameter for the gang rotary tool M6 workpiece Spindle speed of the gang rotary tool Max.6,000 min-1 (Rating 4,500 min-1) 3-colour signal tower Signal lamp Max. chuck diameter of back spindle 20 mm Dia. (25 mm Dia.0P) Max. protrusion length of the back Special accessories 50 mm spindle workpiece Fixed guide Bush Chip conveyor Max. drilling diameter in back machining process 8 mm Dia. Product receiver shelf for long Medium-pressure coolant unit Max. tapping diameter in back machining process M6 workpiece device Back spindle speed Max.8,000 min-1 LFV Max. protrusion length 100 mm Number of tools to be mounted 21 Standard NC functions Tool size NC unit dedicated to the A20 Spindle 1º indexing function 0P Program storage capacity : Tool (gang tool post) 12 mm Sq.x120 mm (13mm Sq. ) 8.4 inch colour LCD 40m(approx.16KB) Sleeve 25.4 mm Sq. On-machine program check function Tool offset pairs : 32 Chuck and bushing Product counter indication (up to Operating time display function Main spindle collet chuck TF25, (TF30 for 25mm OPT.) 8 digits) Main spindle indexing at 15° Back spindle collet chuck TF25, (TF30 for 25mm OPT.) Preparation function intervals Rotary tool collet chuck ER11, ER16 Spindle speed change detector Automatic power-off function Chuck for drill sleeves ER11, ER16 function Guide bushing T223 (T227 25mm OPT.) Nose radius compensation Continuous thread cutting function Rapid feed rate Constant surface speed control Program prior analysis function All axes (except X1) 32 m/ min Spindle synchronised function Back spindle 1º indexing function X1 axis 18 m/ min Rigid tapping function Back spindle 1º indexing function Motors Chamfering, corner R Front/Back spindle C-axis function Spindle drive 2.2/ 3.7 kW Multiple repetitive cycle for Canned cycle drilling Tool spindle drive 0.75 kW turning Back spindle drive 1.1/1.5 kW Y-axis offset Coolant oil 0.4 kW Lubricating oil 0.003 kW Optional NC functions Program storage capacity 2560m Centre height 1,050 mm High speed rigid tapping function (approx.1 MB) Rated power consumption 7.1 kVA Tool offset pairs : 49 Hob/polygon function B Full-load current 20.2 A Submicron commands Tool life management I Main breaker capacity 30 A Drawing dimension direct input Tool life management II Air pressure and air flow rate for 0.5 M pa, 47 NL pneumatic devices User macros Optional block skip (9 sets) Weight 2,200 kg Inch command External memory program driving Sub/inch Command Network I/0 function

CITIZEN MACHINERY CO., LTD. Japan Citizen Machinery Co Ltd Tel: 81-267-32-5901 Fax: 81-267-32-5908 4017-6 Miyota, Miyota-machi, Kitasaku-gun, Nagano-ken, 389-0206, Japan Europe - UK Citizen Machinery UK Ltd Tel: 44-1923-691500 Fax: 44-1923-691599 1 Park Avenue, Bushey, WD23 2DA, UK www.citizenmachinery.co.uk

All specifications are subject to change without prior notice. This product is an export control item subject to the foreign exchange and foreign trade act. Thus, before exporting this product, or taking it overseas, contact your CITIZEN machine dealer. Please inform your CITIZEN machine dealer in advance of your intention to re-sell, export or relocate this product. For the avoidance of doubt products includes whole or part, replica or copy, technologies and software. In the event of export, proof of approval to export by government or regulatory authority must be evidenced to CITIZEN. You can operate the machines after the confirmation of CITIZEN CITIZEN is a registered trademark of Citizen Holdings Co., Japan