Five-axis, 30-taper mill-turn centre

Brother has introduced an uprated version of its Speedio M140X1 five-axis, 30-taper mill-turn centre. Called Speedio M140X2, the machine was launched at the JIMTOF 2016 exhibition in Tokyo last November and is now available in the UK and Ireland through sole agent Whitehouse Machine Tools.

Improvements include an integrated, high-output, direct-drive motor in the C axis to replace the previous roller drive powering the 2000 rpm turning table. Furthermore, the A-axis trunnion rotates through a 50% larger angle, from +120 to -30°, allowing features at the rear of components to be machined. This also facilitates loading and unloading of parts at the front of the machine.
Among additional improvements, the A axis is now tilted by a backlash-free roller drive, promoting high-accuracy cutting, says Whitehouse. A holding force of 400 Nm, without the need for a mechanical clamping mechanism, is said to deliver high-speed indexing combined with rigidity when milling parts at an angle or turning them in the horizontal plane.
A new option is a 16,000 rpm BIG Plus face-and-taper contact spindle (10,000 rpm spindle supplied as standard). Focusing on the elimination of non-productive time, the spindle motor’s rapid acceleration and deceleration – along with a responsive servo control – enable a 0.2 second start/stop time. What’s more, the start-up time of the turning table from zero to 2000 rpm is less than 0.3 second. Travels in the X, Y and Z axes of 200, 440 and 305 mm remain the same, but the distance between the table surface and the spindle nose has been increased to 455 mm.
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