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Citizen Machinery has introduced the B-Series range of affordable, fast-cycling, entry-level CNC sliding-head turn-mill centres. The machinery, which will be delivered and installed for less than £60,000 complete with bar feed and two-year warranty, is aimed at companies in the subcontract machining industry.

The 12mm-capacity B12E and 16mm-bar-size B16E will hold 16 tools, mounted radially around the main spindle housing in the form of a yoke.

The B12E/16E Type VI has increased rigidity for the main spindle and subspindle and improved thermal displacement.

The B-Series will accommodate five turning tools, three driven tools for cross drilling on the gang toolpost and four tool positions for front drilling and a further four for back drilling.

The coolant tank holds 117 litres and the chip receiver box can be easily withdrawn for efficient cleaning.

The control software includes a series of canned cycles, constant surface speed, customer macro, hobbing and polygon turning and drawing dimension direct input.

Key features and specifications

  • Main spindle is 3.7kW for both capacity versions
  • Maximum speed of 12mm spindle is 12,000rev/min
  • Maximum speed of 16mm spindle is 10,000rev/min
  • Sub-spindle is 1kW, 6,000rev/min on both machines
  • Driven tools are powered by a 0.5kW, 4,500rev/min motor
  • Tool configuration minimises lost time in positioning and ensures high repeatability
  • Increased spindle rigidity and improved thermal displacement enhances accuracy over extended and continuous machining cycles as well as increased motor power
  • Software options include a long-workpiece unit as well as tool-life management and a sub-micron command

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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