Heller's five-axis MCH-C machining center is equipped with a universal swivel head and a two-speed gearbox, making the machines suited for low- to medium-volume, flexible machining of tough materials common to medical, power transmission and aerospace parts. The machine can accommodate from prototype, batch, and heavy production applications.
The series features rapid traverse rates as fast as 50 m/min (2,000 ipm) and acceleration of 4 m/s2 (156 ips2) in all three axes plus chip-to-chip time of 6.8 seconds. The working range of the machines is 1,600 × 1,200 × 1,700 mm in the X, Y and Z axes for the MCH 450 C and 1250 × 1000 × 1300 mm in the X, Y and Z axes for the MCH 350 C. The MCH 280 C features a range of 1,000 × 1,000 × 1,100 mm in the X, Y and Zaxes. High spindle torque (820 Nm/605 foot pounds) and rigid construction permit stable, heavy machining and high productivity, the company says.
The spindle is the same on all models. Pallet sizes range from 630 × 630 mm to 800 × 1,000 mm with table load capacities from 1,760 lbs to 5500 lbs. A revolving pallet changer minimizes pallet change times. Chain-type tool magazines can store 50 to 100 tools, or rack-type magazines can store as many as 405 tools. Precision linear guideways minimize maintenance, damp vibration and provide higher speed, quick acceleration and long life.
The machines are equipped with a Siemens CNC, the Sinumerik 840 D/DE, which includes software applications for machining complex shapes and surfaces such as dies, cams and other surfaces requiring multi-axis interpolation.