4th generation five axis milling, mill-turn machine
- January 1, 2015
The machine features a newly developed B axis milling head with a swivel range of 210° with a swivel of 30° in the negative direction. The larger axis bearing results in a 20 per cent increase in rigidity, says DMG MORI. The extended swivel range and reduced interference contour in conjunction with the cable conduit integrated into the housing enable an even wider range of customer-specific complete machining operations to be carried out. Idle times are reduced thanks to shortened B axis movements, and the extended life of the integral cables, which has a positive effect on high machine availability.
The new design has an 8 per cent larger work area of 0.715 dm3 / 43.6 in3 and a Z axis traverse of 850 mm/33.5 in., and has increased overall rigidity, despite a reduced footprint. This is based on structural optimization of reinforced, and, in some areas, wider machine beds, and columns made of high quality castings (GGG 60). In addition, the supporting surfaces of the inherently rigid machine beds have been enlarged, with stronger 55 mm (2.2 in.) linear guides fitted on the Y axis, and 50 mm (2.0 in) diameter ballscrew drives incorporated.
The spindle has a power rating of 77 kW / 103.2 hp., the maximum speed is 9,000 rpm. and the torque is 1,000 Nm/737.6 ft./lb. The B axis provides a 120 per cent power increase compared to previous motor spindles and offers milling performance and chipping power in a completely new dimension. In comparison with the competition, DMG MORI says the 4th generation universal milling centers achieve 75 per cent greater metal removal rates during five axis milling.
Motor spindles with the HSK 63 tool interface up to 18,000 rpm. for high speed cutting (HSC machining) is a further option. Alternatively, Torquemaster gear-driven spindles with 1,053 or 1,424 Nm/776.7 or 1,050.3 ft./lb at 8,000 rpm and 37 or 44 kW/49.6 or 60.0 hp. for HSK 100 can be used in the machines when carrying out high-performance cutting operations (HPC machining).