Face Gear Manufacturing with Universal Cutter and Hypocycloid Path

The patent applies a universal cutter design that can manufacture face gears with different pitch angles (including non-90° pitch angles) using the same tool. The cutter is oriented at an angle equal to the pressure angle of the mating pinion and rotated around a virtual pinion axis, eliminating the need for multiple job-specific tools while maintaining manufacturing precision through the hypocycloid path of motion and continuous indexing motion.

The patent replaces the expensive, complex threaded grinding wheel that requires lengthy dressing operations with a simpler cutter design. The universal cutter with basic geometry can be quickly set up and used without extensive dressing time, achieving the necessary finishing precision through the continuous indexing motion and hypocycloid path rather than through complex wheel geometry.

The patent creates a universal cutter that can perform face gear manufacturing with the same efficiency as specialized skiving tools. The cutter achieves high cutting speeds through its continuous indexing motion and hypocycloid path generation, while being available as a standard tool that can handle various face gear configurations including different pitch angles, eliminating the need for specialized, expensive, and hard-to-obtain skiving hobs or shaper cutters.

The patent implements continuous indexing motion where the cutter rotates in the same hand as the workpiece, describing a hypocycloid path with an indexing ratio of two cutter rotations during one work gear rotation. This continuous motion generates straight lines along the face width efficiently, eliminating the need for stop-and-start operations or complex generating rolls, thereby significantly reducing machining time compared to conventional face gear manufacturing methods.