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Developments that will provide an increased bar capacity of 35mm, enhance the ability to set complex, multi-featured components and help increase levels of productivity have been included in the latest fourth generation of Citizen’s M32-VIII CNC sliding-head turn-mill centre. 

A third Y-axis cross feed with a nine-tool multi-head has been added to the back tool post, while an additional B-axis and adjustable-angle rotary tool device is fitted to the gang toolslide.

With further development of Citizen’s own Streamline control software, coupled with greater axis acceleration/deceleration to 32m/min rapid traverse, non-cutting times have been reduced by up to 30 per cent on a typical cycle.

Key benefits of product application

  • Speed of both spindles improved to 8,000 revs/min
  • Torque increased to 9.5Nm
  • Extended Z-axis stroke to 212mm
  • Index time within 0.5 sec
  • Carries an additional B-rotational slant axis
  • Programmable between -10° and 95°
  • Gang tool slide is able to carry five turning and four driven tools
  • A further nine tools can be carried on the back tool post
  • Tools are mounted in a triple-stack multi-head positioned by the additional Y-axis
  • Start-up time is now three times faster
  • External memory is able to provide an additional 1GB of data
  • Graphical Eco-Monitor records and displays information such as power consumption
  • Provides performance ratios of auto-operational times and set up, alarmed stoppages, cutting against non-cutting and overall times lost when the machine is not operating
  • Optimised axis overlap helps reduce non-cutting elements and gives a smoother action
  • Applies direct spindle indexing and provides tool-life management and a graphical interference collision check of the program
  • Automatic skip function

Citizen Machinery

Citizen is the world leader in CNC sliding head ‘one-hit’ turn-milling technology. It has a range of machines having a maximum bar capacity between 4 mm on the compact micro-machining capable Citizen R04 to 32 mm on the top of the range Citizen M32-VII which has the added capability of two Y-axis cross-feeds.   

The M32 can carry up to 80 tools, of which 20 can be driven, and can cut with three tools simultaneously giving low cycle times and high levels of productivity.  Also, fully automated unmanned cycles can be utilised through an integrated gantry option and conveyor system that helps ensure damage free parts during uninterrupted batch production.  A high pressure 2,000 psi CoolBlaster coolant system is a further option to optimise swarf control, tool life and machining difficult materials.

Following the acquisition in Japan in 2008 of 65 per cent shares in Miyano, the fixed head turning centre specialist, the two companies are maintaining their separate high profile brand names utilising a single sales operation.  However, turn-milling solutions from bar up to 64 mm diameter can now be provided.  In addition, with the Miyano range of turning and turn-milling machines for chucking operations, cell-type applications can now be accommodated with a wide range of automation options.   

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