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For Price, Performance, and Ease of Use... “A” is the New Wave. • RGB unit • Front and back spindles with built-in motor

• Bed 1.8 times the weight of conventional models’ beds • Heavy-Duty spindle for rigidity

• Comprehensive software • Exceptional low price with all these features

• Stream Line Control

To be successful in the parts manufacturing industry it has become imperative to find high quality, cost effective solutions for the entire machining process. With this in mind, we have developed the A20, a φ20 mm machine that is not only economical but is loaded with standard features such as an RGB unit, product separator and

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lighting. The control functions include constant surface speed control, spindle speed fluctuation detection, nose R compensation and many more. The bed is 1.8 times heavier than conventional φ20 mm machines and the dense spindle construction and sleeve holders enable high rigidity and heavy-duty cutting capability.

Citizen’s unique Stream Line Control is adopted in the new A20 lathe. Productivity is improved in conjunction with the latest NC high-speed calculation processing. Overall, this machine can provide dramatic cost performance not only during initial set up but throughout its lifetime.

Improved Productivity The approach to improving productivity (that was adopted to customer acclaim with the Cincom K16 and L20) is fully utilized in the A20. By installing the latest NC unit and adopting Citizen’s unique control technique “Streamline Control” we have managed to slash idle time and reduce cycle time. This is a new generation of CNC automatic lathe that, while giving you unrivalled cost performance, also gives a real sense of true productivity improvements. Installation of the Latest NC Unit With its high-speed calculation processing it achieves substantial reductions in macro processing time, ladder scanning time and so on, contributing to reduction of cycle times. Streamline Control Streamline Control is a control system unique to Citizen that produces fast and smooth movements. It reduces idle time without any affect on cutting, and achieves substantial reductions in cycle time. Direct C-axis Indexing When a spindle C-axis command is used for positioning, the spindle will slow down and stop at the desired index position without unnecessary zero point return, eliminating idle time. #ONVENTIONAL -ACHINE

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Axis Feed Motion Overlap Function The next axis feed motion starts without waiting for completion of the current motion of another axis. This eliminates wasteful idle time and effectively suppresses machine vibration.

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Cincom A20

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Supported by Strength High-Rigidity Technology

Technology to Cope with Thermal Expansion

Heavy-Duty Bed for More Rigidity This heavy-duty bed weighs 1.8 times as much as that of a conventional machine. It not only permits heavy-duty cutting, but is also excellent at damping the various vibrations generated during machining.

Left/Right Symmetrical Bed The bed has been designed with a perfectly symmetrical construction in consideration of thermal expansion. The design also gives consideration to thermal damping characteristics, and the relatively small thermal displacement of the bed during long periods of operation promotes high accuracy.

Rigid Sleeve Holders Like the bed, the sleeve holders used for drilling also have a durable design. This permits heavy-duty cutting when drilling. Rigid Construction Around the Spindle The spindle, which is the essential element for machining, also has a high rigidity construction. We can note in particular that there are adequate measures against overloads in the radial direction (direction perpendicular to the slide shaft), which is considered to be weak on existing machines: this makes tough cutting possible, and also means that a consistent turned surface is generated. Roller Guides Now Used on all Sliding Axes Roller guides, which are characterized by high rigidity, are used on all slide guideways. Roller guides provide high rigidity and can operate quietly and smoothly owing to the fact that they have low elastic deformation under load, and that they have a wide contact area on the track.

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Coolant Tank Restricts Heat Emissions The sealed construction of the coolant tank minimizes the effects of thermal expansion on the casting due to heat radiation from the coolant.

A Whole Range of Convenient Features Maintenance Performance

Convenient Operation Assured

Air Sealing The rotary guide bushing and front and back spindle bearings are equipped with air seals as standard, which prevents the entry of cutting fluid inside them; they tolerate water-soluble cutting fluids. Centralized Lubrication Unit Installed as Standard The ball screws, roller guides and guide bushing drive units of all axes are centrally lubricated, making routine manual lubrication unnecessary.

Control Panel Layout The control panel can swivel, making it easier to check inside the machining chamber while performing operations.

PC Card Slot NC programs can be input and output by using the PC card slot on the front face of the operation panel.

Product Separator The separator uses the chute system for collection. It can handle products up to 80 mm in length, unloading them to the front.

Product Receiver Box The large capacity product receiver box reduces the need for constant clearing.

Large Capacity Coolant Tank A 150-liter, large capacity coolant tank is equipped as standard, allowing long periods of continuous operation.

Coolant Nozzles Discharge ports are also provided on the sleeve holders and can be used as nozzles for hole drilling operations.

Chip Compartment The spacious chip compartment has an oversized door which makes cleaning easy.

In-machine Lighting The included florescent lamp inside the machine provides excellent visibility for a user-friendly work environment.

CS Quick Wedge This drastically improves tool change workability and achieves substantial reduction of setup time. Cincom A20

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Simplicity for Ease of Operation

On-machine Program Check Function This function allows you to execute an NC program forward and in reverse using manual handle feed; after stopping temporarily during the check, you can edit the program and re-run it to check the operation.

Text Size Changes Two levels of text size can be set on each screen (the screen shown here is displaying the larger text size).

Code List Display You can display a list of G, M, and T codes that even gives explanations of the arguments, to help you write NC programs.

Machine Configuration/Tool Layout

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: ※ The standard tool size for turning is □½" (13 mm). □12 mm and □16 mm can also be selected.

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Machine Specifications Item Maximum machining diameter (D) Maximum machining length (L) Maximum front drilling diameter Maximum front tapping diameter (with a tap and die) Spindle through-hole diameter Main spindle speed Maximum drilling diameter of gang rotary tool Maximum tapping diameter of gang rotary tool Spindle speed of the tool spindle of the gang tool post Maximum chuck diameter of the back spindle Maximum protrusion length of back spindle workpiece Maximum drilling diameter in the back machining process Maximum tapping diameter in the back machining process Back spindle speed Number of tools to be mounted Turning tools on the gang tool post Rotary tools for cross machining Tools for front drilling Tools for back drilling Tool size Tool (gang tool post) Sleeve Chuck and bushings Main spindle collet chuck Back spindle collet chuck Rotary tool collet chuck Chuck for drill sleeves Guide bushing Rapid feed rate X and Y axes Z1 axis Z2 axis Motors For main spindle For tool spindle For back spindle For coolant oil Center height Input power capacity Air pressure and air flow rate for pneumatic devices Weight Main standard accessories Main spindle chucking device Headstock cooling device Coolant supply unit (with level detector) Door lock Workpiece separator Lubricating oil supply unit (with level detector) Pneumatic device for air sealing Back spindle chucking device Gang rotary tool driving device Cut-off tool breakage detection Lighting Rotary guide bushing device Optional accessories Through-hole knock-out device Workpiece conveyor Chip conveyor Workpiece separator for front collection Coolant flow rate detector Signal lamp 3-color signal tower Long workpiece machining device

A20VIPL φ20mm 165mm/1 chucking φ10mm M8 φ31mm 8,000min –1 φ7mm M6 max 8,000min –1 (rating: 6,000min –1 ) φ20mm 17mm (maximum length of product extractable 80mm) φ8mm M6 8,000min –1 17 7 3 4 4 □½" (13mm); (□12mm, □16mm) φ1" (25.4mm) TF25 TF25 ER16 ER16 TD25NS 18m/min 18m/min 18m/min 2.2/3.7KW 0.75KW 1.1/1.5KW 0.25KW 1050mm 6KVA 0.5MPa ・ 70NI/min (Maximum 100NI/min) 2300Kg Standard NC functions NC unit dedicated to the A20 series 7.2-inch monochrome liquid crystal display (LCD) Operating time display Preparation functions Three-dimensional interference check function Program work area equivalent to 80 m of tape Tool offset pairs: 49 Product counter indication (up to 8 digits) Automatic power-off function Thread cutting canned cycle Main spindle speed change detector Back spindle speed change detector Simplified cut-off tool breakage detector Main spindle indexing at 15° intervals On-machine program check function Constant surface speed control function, front spindle Constant surface speed control function, back spindle Variable lead thread cutting Chamfering, corner R Direct input of drawing dimensions Spindle synchronized function Spindle C-axis function

Milling interpolation Back spindle C-axis function Multiple repetitive cycle for turning Canned cycle drilling Rigid tapping function Tool life management I Tool life management II Program storage capacity 80 m User macros Subinch command Inch/Metric conversion Optional NC functions Program storage capacity 120 m

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Catalog No. A20 1106