Research on Tooth Modification of Spur Bevel Gear

Dong Yang, Huanyong Cui*, Xijie Tian, Qingping Zhang, Pengfei Xu
School of Mechanical Engineering, University of Jinan, Jinan 250022, China.

© 2010 Yang et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Mechanical Engineering, University of Jinan, Jinan 250022, China; Tel: +86-531-89736583 (Office),+86-01337050 8086(Mobile);Fax: +86-531-82765687; E-mail:


Isometric modification is proposed as a new method of axial modification of spur bevel gear. Based on the gear geometry theory and the normal meshing motion equation of gear pairs, changes of meshing points and angles are analyzed and the effect of axial modification on meshing movement of gear pairs is discussed. After that, a method of drawing spherical involute with the aid of SolidWorks software is achieved, by which the accuracy of solid modeling of spur bevel gear is improved. After solid modeling, bevel gear analysis is carried out by ANSYS/LS-DYNA software so that the contact stress and acceleration changes of driven wheel during the meshing process which was used to guide the modification of spur bevel gear can be calculated. The simulation results show that the stress distribution of gear surface is controlled by tooth modification. The load concentration, agglutination and pitting of the gear can be avoided effectively.

Keywords: Solid modeling, tooth modification, spur bevel gear, finite element analysis (FEA).