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Sliding Headstock Type CNC Automatic Lathe 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 650 650 535 535 335 335 10851085 11851185 On-machineOn-machine program program program check check functioncheck function function DisplayDisplayDisplay of codeof of code code list list list EasyEasyEasy viewing viewing with with with text text sizetext size change size change change UsingUsing manual manual hand hand feed, feed, operations operations can can be runbe run TheThe function function displays displays the the list listof G, of M, G, andM, and T codes T codes TwoTwo text text size size settings settings can can be beapplied applied to eachto each Using manual hand feed, operations can be The function displays the list of G, M, and Two text size settings can be applied to each in thein the forward forward or reverse or reverse directions, directions, can can be be includingincluding explanations-useful explanations-useful aid aidto to screenscreen (large (large text text display display illustrated). illustrated). A20 Option-installed Machine pausedpausedrun into the edit to forwardedit the the program, orprogram, reverse and and directions,restart. restart. can be programming.Tprogramming. codes including explanations-useful aid screen (large text display illustrated). A20 Option-installed Machine L2 L2 paused to edit the program, and restart. to programming. L1 L1 500 500 995 995 925 925 ProductivityProductivityProductivity Improvements Improvements Improvements 130 130 100 100 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
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