Product category:
CNC turning centres, mill/turning, multi-tasking centres, horizontal and VTLs.
News Release from: Citizen Machinery UK | Subject: Boley BE42 fixed-headstock turning centre
Edited by the Manufacturingtalk Editorial
Team on 21 May 2003
Twin-spindle turning centre is highly
productive
Turning centre simultaneously machines with three tools and combines first and second operations using 8 CNC axes, twin-spindles and two 12-station, two-axis driven tool turrets.
The ability to simultaneously machine with three tools and combine first and second operations using the eight computer controlled axes, twin-spindles and two 12-station, two-axis driven tool turrets make the latest Citizen Boley BE42 fixed-headstock turning centre highly productive The high precision Boley BE42, now available from NC Engineering of Watford, can accommodate bar material up to 42mm diameter and be specified as a chucking lathe with a 140mm capacity
This article was originally published on Manufacturingtalk on 19 Feb 2002 at 8.00am (UK)
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Both in chucking and bar mode the machine has the capability to transfer parts between both spindles which have C-axis capability for subsequent mill/turn machining sequences.
Developed for fast changeover, the machine is ideal for small, medium as well as large batch production.
A totally new design of main spindle is incorporated into the machine utilising ceramic bearings and liquid cooling with an 11kW, AC built-in motor giving between 80 and 8,000 revs/min.
Further reading
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When Target Sports bought its first Citizen B12 Type V, CNC sliding headstock lathe, it wanted to machine high quality brass dart bodies - it was quickly followed by a second machine.
Sliding heads raise productivity by two-thirds
To help meet growing demands for torque control tooling, MHH invested in two Citizen sliding head lathes from NC Engineering, and is now achieving an average 65 per cent higher productivity.
The collet is hydraulically operated for bar machining and to provide higher gripping force when using the optional 140mm capacity chuck.
In its chucking lathe guise, the Boley BE42 uses a collet in the secondary spindle and is able to pick-up the component from the main spindle by locating from a previously turned diameter which can be up to 24mm.
It is then transferred at 24 m/min rapid traverse rate ready for second operational machining.
The Boley BE42 has a 30 (degree) slant bed and adopts many of the proven features of the existing Boley fixed spindle and Citizen CNC sliding head range including a common CNC control system to the Citizen C, L and M Series machines.
In addition, the secondary spindle also incorporates a 110mm X-2 cross-feed axis from the Boley BC42-X2 to enable component features that are dimensioned off the centre line to be machined.
The two turrets are identical 12-station units with one second indexing and a 1kW drive to the driven tool positions.
An example of the simultaneous turning capability between the main and secondary spindles can be described when turret one is able to front and back turn a component while turret two simultaneously carries out front turning operations.
A further example is when turret one provides front and rear drilling to the part at the same time as turret two is front turning or performing cross-drilling or milling tasks.
The machine is compact with a floor area of 2350mm by 1560mm.
Options available include chute-type workpiece outfeed or conveyor, a back-spindle thread chasing device, automatic part-off, tooling monitoring and breakage detection and an automatic component loading system for chucking work. Request a free brochure from Citizen Machinery UK ...
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