ABSTRACT
The gear shaper cutter is the primary type of gear cutting tool for machining internal spur and helical gears. Before designing a gear shaper cutter for machining a given internal gear, the generating surface of the gear cutting tool should be determined. To determine the generating surface of the gear shaper cutter, the internal gear machining mesh is used. Most of internal gears machined by gear shaper cutters are spur gears. However, internal gears having helical teeth can also be machined with gear shaper cutters. The thickness of cut is an important consideration because it significantly affects the wear of the gear shaper cutter teeth. The parameters of the thickness of a gear shaping operation cut can be calculated. The kinematics of the gear shaping operation features continuous indexing of rotations of the work gear and the gear shaper cutter.
