Abstract
A precise analysis has been made for the design method of a face gear-set which has non-intersect and inclined axes. A face gear-set will be designed as a replacement of conventional spiral bevel gear and hypoid gear. Firstly, theoretical equations are derived to represent the profile of the face gear. Secondly, a numerical analysis method is proposed to obtain the limitation of a narrow tooth edge and an undercut interference of the face gear. Then, the theory is verified by practical cutting of the face gear with a pinion cutter using a simple attachment fitted to an ordinary gear shaper.