The OFA CNC 6 vertical gear hobbing machine is designed to cut spur gears or helical gears, sprocket wheels, worm gears hobbed by the radial tangential method, gears with longitudinal modification, spline shafts and other types of gearing generated by the hobbing process. The modern design with backlash elimination of hob carriage and table offers hobbing of hardened gears and high speed milling of non-hardened gears with carbide tipped tools. The machine is suitable for mass production as well as piece production. The operation, setting and maintenance of the machine are designed to be simple, swift and easy. The automatic work cycle of the machine along with possible application of a work-piece magazine enables to operate several machines by one operator. In its basic version the machine is equipped with SIEMENS Sinumeric 840D sl control system and drives. There are six controlled machine axes.
Operating range
Max. module to be hobbed mm: 14 (16*)
Max. dia. to be hobbed mm: 1,050 (1,120**)
Min. number of gear teeth: 3
Max. helix angle of teeth °: ±45
Max/min hob axis distance from:
Table axis mm: 625/80
Surface of table mm: 850/220
Clamping table
Diameter mm: 890
Bore mm: 180
Hob carriage
Taper in spindle: MORSE 5
Max. carriage travel mm: 630
Hob tangential adjustment mm: 250
Max. tool diameter mm: 190
Max tool length mm: 300
Range of tool speeds 1x min-1: 25 – 450
Main motor output kW: 28
Working feed axial mm.min-1: 0.01 – 340
radial mm.min-1: 0.01 – 170
tangential mm.min-1: 0.1 – 170
Rapid traverse axial mm.min-1: 2,500
radial mm.min-1: 3,000
tangential mm.min-1: 3,000
Machine
Total power input kVA: 70
Dimensions: lenght mm: 4,500
Width mm: 3,530
Height mm: 3,100
Weight kg: 14,000