Study on an arbitrary gear tooth profile modification based orthogonal link-movement principle

A new principle here named orthogonal link-movement technology is proposed. Based on the technology, an arbitrary gear tooth profile can be generated on a CNC (computer numerical controlling) hobbing machine tool by means of a standard involute gear hob. Computer simulation is done for gear tooth tip relief, and the results show that the new principle is right and practicable. So the restriction of the traditional method with which different gear tooth profiles must require corresponding different cutting tools is broken by the new method. This is of momentous economic and practical significance for reducing the production cost and cycle.