Worm wheel and method of hobbing same

Details Worm wheel and method of hobbing same Worm wheel and method of hobbing same

F - Mech Eng,Light,Heat,Weapons

16

H

74/103, 74/218,

F16H 55/22 (2006.01) B23F 13/06 (2006.01) B23F 19/00 (2006.01) F16H 1/16 (2006.01)

Patent

CA 1289772

ABSTRACT OF THE DISCLOSURE An hourglass worm wheel and method of hobbing same wherein the finished worm wheel (70) includes a mid zone (3) where the root surface and outside helix are cylindrical for a predetermined distance along the axis of the worm wheel. The method of forming the mid zone includes a combination radial and axial feeding of a hobbing tool (58) rotating in synchronization with the rotating worm wheel blank (50).

547632

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