Improved method of making ring gear and ring gear therefrom.

摘要

An improved method is provided for finish machining forged and/or rough-cut teeth (8) of a ring gear (40) by which a rotary tool (24) such as a rotary carbide milling tool is rotated about a rotational axis "r" that projectionally intersects a bottom surface (12) of tooth (8) as it tracks along a predetermined tool path enabling the rotary tool to be in close proximity to sidewalls (14,14 min ) of teeth (8) and thereby eliminating the practice of having to normalize the ring gear microstructure prior to machining teeth (8).