Five-axis VMC with thermal monitoring

The latest addition to the Mitsui Seiki Vertex five-axis series of vertical machining centres introduces a multi-sensor thermal growth monitoring system known as MAMS (Mitsui Accurate Milling Support). MAMS is said to create up to a 35% improvement in minimising Z-axis thermal displacement against previous machine tool technologies.

Able to produce five-axis cycles on workpieces within an envelope of 750 mm diameter by 525 mm high, the Mitsui Seiki Vertex 55X III, now available in the UK from 2D CNC Machinery, incorporates rapid traverse rates of 48 m/min to positioning accuracies of ±1 µm over the 550 mm in X by 600 mm in Y and 500 mm in Z-axis travels. Meanwhile, small point-to-point surface movements are also realised due to the advantage gained by greater rigidity of the machine design.
Workpieces are held upon a 360°, 50 rpm C-axis table of 400 mm diameter able to support loads of 350 kg. A-axis capacity is +15 to -105° while being able to work to a positioning accuracy of ±2 mins and repeatability of ±1.5 mins.
Weighing in at 9.5 tonnes, rigidity in the bed and castings is paramount in maintaining consistent 3D component accuracy. The 40-taper spindle power is 18.5 kW, giving 25,000 rpm with 28.6 Nm of torque available. Tool storage capacity is 40 positions for tools up to 90 mm diameter (125 mm with adjacent pockets left empty) by 300 mm in length.
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