DMG Mori ULTRASONIC 80 eVo linear

The DMG MORI ULTRASONIC 80 eVo linear sits above the ULTRASONIC 60 eVo linear and ULTRASONIC 40 eVo linear in size, with 800 mm (31.5 in) of X travel, 650 mm (25.6 in) of Y and 550 mm (21.7 in) of Z. The workpiece on its swivel rotary table can weigh up to 600 kg (1,322.8 lb) and measure up to 800 mm (31.5 in) in diameter and 600 mm (23.6 in) in height.

What DMG MORI stresses for this model is control of the ultrasonic process, under the label ULTRASONIC 3rd Generation. The working frequency is detected automatically, frequency is tracked and power controlled in real time, and the amplitude is held constant during the process. Those functions address the usual weakness of ultrasonic machining, which is that the oscillation shifts as the tool engages, wears or is replaced. DMG MORI adds that the advantages hold even with non-optimal tools and that the system is fully compatible with the 2nd generation ULTRASONIC actuator, a point that counts for a shop already holding a stock of actuators.

The interface is HSK-A63 / HSK-A100 with amplitudes up to 15 µm. Process forces are reduced by up to 50%, which DMG MORI says enables, depending on requirements, higher feed rates, improved surface quality up to Ra <0.1 µm and longer tool life. Coolant treatment systems with centrifuges are listed specifically for ultrasonic processing of Advanced Materials. Plan floor space and upkeep for that equipment, since the fine abrasive sludge these materials produce is what a centrifuge is there to remove.

The spindle list reads: speedMASTER 20,000 rpm in the standard version, a 15,000 rpm speedMASTER with 200 Nm as an option, and a 24,000 rpm motorspindle as a further option. For mill-turn work the C-axis runs at up to 1,200 rpm, paired with a motorspindle with 18,000 rpm, 130 Nm and HSK A63. The ULTRASONIC 85 is the next step in size with 935 mm (36.8 in), 850 mm (33.5 in) and 650 mm (25.6 in) of travel.