Application Design System CITIZEN Corporate Identification System

A20 Sliding Headstock Type CNC Automatic The Citizen A20, a 5-Axis CNC sliding head machine, with excellent cost / Tooling System performance ratio now also featuring the ability to switch between guide bush and non-guide bush types Rotary cross One is removable power and can be replaced with holders below The A20 has further evolved as a 5-axis machine for φ20 mm applications with the advantage that it can now be used with or 4 off X1 without a guide bush in a simple, easy to use procedure. Y1 In standard guide bush mode it can machine both short parts and also long slender workpieces, and without a guide bush for tools on Tools for front the gang post shorter parts (maximum 3 x material diameter) with reduced bar end remnants. drilling 5 (12mm Sq., 13mm Sq.) 4 25.4mm Dia Machine performance has also been improved with the main spindle now capable of up to 10,000 rpm enhancing machining operations on smaller diameter bar material and the machining length per single chucking has been extended to 200 mm. Z1 C axis is also available on both spindles.

The through bore of the main spindle has also been increased to 26 mm allowing the option of using bar material of up to 25 mm Triple face power Triple face power BSE607 BSE707 with optional oversize kit. Main spindle only Main & sub spindle

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

Tools for back drilling 8 x 25.4mm Dia

A20 Tooling Example

Guide bush type

Switchable

Non-guide bush type

2 A20 | Citizen ToolingTooling system System

Rotary cross One spindle is removable poRotawerry tocrosolss Onande caspindln bee replac is removed withable holders below 4po ofwerf tools and can be replaced with holders below X1 4 off X1 Y1 Y1 Turning tools on Tools for front Tuthernin gangg tool tools onpost drillinTools gfor front 5th (1e 2mgangm Sqtool., post13mm Sq.) 4drillin 25.4gmm Dia 5 (12mm Sq., 13mm Sq.) 4 25.4mm Dia Z1 Z1

Triple face power Triple face power BSTripleE6 07face power BSTripleE7 07face power BSMaiE6n spindl07 e only BSMaiE7n &07 sub spindle Main spindle only Main & sub spindle

X2 Z2 X2 Z2 Rotary tools on the backRota rytool tool posts on (o thptioe n) back tool post (option)

Tools for back drilling 8To xol 25s fo.4rmm bac Dik adrilling 8 x 25.4mm Dia

A20 Tooling A20 Tooling Example Example

Guide bush type Guide bush type Switchable Switchable

Non-guide bush type Non-guide bush type

A20 | Citizen 3

Machine performance & usability upgraded

The A20 machine now features the capability to switch between guide bush and non guide bush. Spindle speed and main spindle chucking length have both been increased with good chip clearance and Citizens’ renowned ease of use and user friendly features.

Maximum spindle speed of 200 mm/1 chucking Support for stock material up to φ25 10,000 rpm. A longer 200 mm machining stroke mm (option) Main spindle speed has been increased reduces the need for re-chucking work- The spindle through bore is now 26mm to 10,000 rpm enabling enhanced pieces hence reducing cycle time. enabling the use of up to 25mm / 1” efficiency when using small diameter material by installing the optional material. oversize kit.

4 A20 | Citizen Machine performance & usability upgraded More speed, more stroke, more capacity = improved productivity

LED work light NC program transfer An energy efficient LED worklight is NC programs can be input and output provided as standard giving a well via. USB memory stick, CompactFlash illuminated working environment. card or RS232 connection.

Coolant nozzle Parts collection Coolant nozzles are provided at the The large capacity collection box appropriate locations to ensure that reduces the frequency of emptying. sufficient coolant can be supplied to the An optional workpiece conveyor is point of machining. also available.

Chip collection Adjustable operation panel The large capacity tank reduces the The pivoting operation panel enables frequency of emptying. easy operation whilst simultaneously An optional chip conveyor is also viewing the machining process. available.

A20 | Citizen 5

Clear for anyone

Screen display is easy to view and read

On-machine program check function Display of code list Easy viewing with text size change The program can be ran round using The function displays the list of G, M, Two text size settings can be applied the handwheel giving enhanced user and T codes including explanations - to each screen (large text display confidence. The program can run in useful aid to programming. illustrated). forward or reverse directions and can paused to edit before restarting.

Productivity improvements

Idle time is slashed using the pre-processing function in the ‘Cincom Control’ that analyses the machining program before it is run to minimise processing and calculation times.

Conven- Stop Zero Conven- tional rotation point tional machine return machine

Rotating Axis feed overlap areas

A20 A20 Direct C-axis indexing Rotating Indexing Reduced idle function time

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

6 A20 | Citizen Machine layout

A20 Standard Machine

A20 Option-installed Machine

A20 | Citizen 7

Machine specification

Item A20 VII (A20-3F7) Standard accessories Max. machining diameter (D) 20mm Dia. (25mm Dia. OP) Main spindle chucking device Coolant unit (with level detector) Max. machining length (L) GB: 200mm/ 1 chucking (188mm: Back spindle chucking device Door lock 25mm Dia spec) GBL: 2.5D Cut-off tool breakage detection Pneumatic device for air sealing

Spindle through-hole diameter 26mm Dia. Work light (LED) Machine relocation detector Main spindle speed Max. 10,000min-1 Workpiece separator Spindle speed of the gang Max.6,000min-1 Lubricating oil supply unit (with level detector) rotary tool (Rating 4,500 min-1) Max. diameter of back spindle 20mm Dia. (25mm Dia. OP) Special accessories Max. protrusion length of the back Rotary guide bushing device Chip conveyor spindle workpiece 50mm Fixed guide bush Medium-pressure coolant unit Back spindle speed Max. 8,000 min-1 Callback chute Coolant flow rate detector Max. protrusion length 100mm Workpiece conveyor Signal lamp Max number of tools to be mounted 26 Knock-out jig for through-hole workpiece Tool size Product receiver shelf for long workpiece device Tool (gang tool post) 12mm Sq. x 120mm 3-color signal tower (13mm Sq. OP) Sleeve 25.4mm Sq. Standard NC functions Chuck and bushing NC unit dedicated to the A20 Tool offset pairs : 32 Main spindle chuck F25 / F30 for 25mm option 8.4 inch color LCD Operating time display function Back spindle collet chuck F25 / F30 for 25mm option On-machine program check function Automatic power-off function Rotary tool collet chuck ER11, ER16 Preparation function Continuous thread cutting function Chuck for sleeves ER11, ER16 Spindle speed change detector Program prior analysis function Guide bushing FG206-M / FG521-M Nose radius compensation Rapid feed rate Constant surface speed control function All axes (except X1) 32m/min Program storage capacity : 40m (approx.16KB) X1 axis 18m/min Product counter indication (up to 8 digits) Motors Main spindle indexing at 15° intervals Spindle drive 2.2/3.7kW Tool spindle drive 0.75kW Special NC functions Back spindle drive 1.1/1.5kW Program storage capacity 2560m (approx.1MB) Coolant oil 0.4kW Tool offset pairs : 49 Spindle 1°indexing function Lubricating oil 0.003kW Submicron commands Back spindle 1°indexing function Centre height 1,050mm Spindle synchronized function Front/Back spindle C-axis function Rated power consumption 7.1kVA Rigid tapping function Tool life management I Full-load current 20.2A High speed rigid tapping function Tool life management II Main breaker capacity 30A Chamfering, corner R Optional block skip (9 sets) Air pressure and air flow rate for Canned cycle drilling External memory program driving pneumatic devices 0.5Mpa, 47NL Drawing dimension direct input Network I/O function Weight 2,200kg Multiple repetitive cycle for turning Inch command User macros Sub/inch Command

Y-axis offset Hob/polygon function B

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 - Germany Citizen Machinery Europe GmbH Tel: 49-711-3906-100 Fax: 49-711-3906-106 Mettinger Strasse 11, D-73728 Esslingen, Germany Europe - UK Citizen Machinery UK Ltd Tel: 44-1923-691500 Fax: 44-1923-691599 www.citizenmachinery.co.uk 1 Park Avenue, Bushey, WD23 2DA, 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.

PRINTED IN THE UK - JUN 2017