Tool profile modification of hypoid gear machined by the duplex helical method

To avoid edge contact and stress concentration on the tooth surface of hypoid gear pairs machined by duplex helical method for drive axle heavy-duty vehicles, a four-segment tool profile was designed simultaneous modification concave convex surfaces pinion. First, geometric model established. Second, mathematical based established, solving generated connecting points presented. Finally, loaded analysis finite element used to analyse meshing performance pair obtained modification. The results original modified were compared. inhibited contact, improved distribution, decreased maximum surfaces, thereby improving fatigue wear life pair.