Citizen launches fourth generation Citizen B-series sliding-head turn-mill centre
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Citizen Machinery aims to satisfy customer demand for a fast cycling, entry-level CNC sliding-head turn-mill centre with the fourth generation of its B-Series. The B-Series is based on two capacity versions, the 12 mm B12E and the 16 mm bar size B16E (E for Evolution).
These latest Citizen B-Series machines will hold 16 tools and retain the proven configuration of turning tools mounted radially around the main spindle housing in the form of a yoke. This minimises positioning time and ensures repeatability and accuracy using virtual axes at 45º. However, increased rigidity and improved thermal displacement of the main and sub-spindle in the B12E/16E Type VI serve to enhance accuracy over extended and continuous machining cycles as well as offering increased motor power.
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 main spindle is 3.7 kW for both capacity versions with a maximum spindle speed of 12,000 rpm on the 12 mm machine and 10,000 rpm on the 16 mm. The sub-spindle is 1 kW/6,000 rpm on both machines with the driven tools powered by 0.5 kW/4,500 rpm motor.
The coolant tank is bigger than that on the original B-Series holding 117 litres and the chip receiver box can be easily withdrawn for cleaning. A series of canned cycles, constant surface speed, customer macro, hobbing and polygon turning and drawing dimension direct input are included in the control software. Options include a long workpiece unit as well as tool life management and a sub-micron command.
