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At its UK Open House on 8–10 October 2013, Citizen Machinery will be presenting four new machines — with sliding- and fixed-head variants — that allow users to achieve higher levels of productivity, flexibility and versatility.

One of the machines is a 42mm-bar-capacity Miyano BNA-42GTY turning centre, which incorporates a moving head stock and Citizen’s Cincom control software. This software is claimed to help reduce non-cutting times by up to 27 per cent while providing the capability to overlap operations involving up to 45 tools in the standard specification.

Also being displayed is the fourth generation of the M-Series in a 16mm-capacity version. As well as a faster cycling capability, the M16-Type Vlll also has more versatility due to additional axes and tool positions, plus the incorporation of higher-speed arithmetic processing and further software developments.

The L12 has been launched to serve the need to produce short or longer workpieces on the same machine by either fitting or removing the guide bush assembly via a quick and simple setting action.

Altogether, 10 machines will demonstrate different aspects of turn-milling technology at the Citizen Machinery UK Open House.

Key features and specifications

  • The Miyano BNA-42GTY has independent Y axes on the eight-station turret and vertical gang tool slide.
  • The BNA-42GTY has the ability to maintain three-tool simultaneous machining techniques.
  • The L12 has a 35m/min rapid traverse and accelerations to apply up to 27 tools to the high-speed 15,000rev/min main and 10,000rev/min back spindle.
  • With the L20-Xll, the user benefits from the versatility of a B axis in addition to a Y axis and the ability to interpolate different axes during the machining cycle.

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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