Method and apparatus for polishing external-tooth gears

摘要

There is provided a method and an apparatus for improving surface roughness of tooth surfaces of an external-tooth gear (W), and thereby reducing the occurrence of noises associated with the meshing between teeth. In accordance with the method, teeth of the external-tooth gear (W) are polished by rotating teeth of the external-tooth gear (W) relative to a film polishing member (110) in the tooth profile direction, and simultaneously by oscillating the external-tooth gear (W) in the tooth trace direction, while pressing the film polishing member (110) against tooth surfaces of the external-tooth gear W by backing up with a shoe (120).