DMG Mori DMU 80 FD eVo

The DMG MORI DMU 80 FD eVo adds turning to a 5-axis machining center: the C-axis of its swivel rotary table spins at up to 1,200 rpm, so a part can be turned and milled in one clamping. Travels are 800 × 650 × 550 mm (31.5 × 25.6 × 21.7 in), and the table accepts a workpiece up to 800 mm (31.5 in) in diameter, 600 mm (23.6 in) high and 600 kg (1,322.8 lb).

For mill-turn operation DMG MORI lists a motorspindle with 18,000 rpm, 95.9 ft lb and HSK A63. The interface is the important part of that line. When a machining center turns, the milling spindle holds a stationary tool against the cutting force instead of rotating it, so the tool connection carries the load, and HSK A63 is the one listed. The general spindle list for the model also shows a speedMASTER with 20,000 rpm in the standard version, a 15,000 rpm speedMASTER with 147.5 ft lb as an option and a 24,000 rpm motorspindle as an option. Which of these can be combined with turning is not stated, so have the spindle confirmed for the FD configuration.

Table speed needs reading with the part in mind. The top C-axis speed is useful for small diameters. A part near the full diameter, or one that sits off-center on its fixture, will run much slower in practice, because surface speed and imbalance both grow with radius. The same applies to weight: 600 kg is a static table load, and a heavy turned part also has to be balanced and clamped for rotation.

The table swivels on its B-axis from -5° to +110°, which lets turned features be followed by angled milling and drilling without unclamping. Cooling covers the table unit, table bearings and drives, the ball screw bearings and nuts, and the guideways in X/Y/Z. The DMU 80 eVo is listed with identical travels of 800 × 650 × 550 mm.