DEVICE FOR FORMING TEETH OF INSERTED-BLADE HOB CUTTERS Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: device has holder 1 with fastening members 2, cylindrical housing 3 with setting members 4 and end washers 5 with fastening screw 6. Error in locating the racks in their forming is reduced due to introduction of detachable auxiliary rack 7 and holder with screws 2 and due to form of datum surfaces for racks made as balls with center angle between adjacent ones equal to end-clearance angle at tooth point of cutter, as well as due to projections 14 provided at ends of rack 7 and received by grooves 15 of washers 5 which correspond to their shape and sizes. Auxiliary worm assembled on housing 3 is embraced by holder 1 in center portion and racks 21 are secured by means of screw 2 oriented to center of device. EFFECT: enhanced efficiency. 2 dwg