Aimed at a kind of rotary cutting machine, the machining process of involute gear chamfering is kinematically analyzed, and the moving locus equations of cutting edge are deduced.

A concept of gear chamfering feature family was proposed to solve the problem of processing parameter calculation and information integration for gear chamfering of vehicle synchronizers.

This paper describes the tooth forms of an external toothing and chamfering gear shaping cutter and chamfering gear shaper cutters designed by old routine.