Journal of Industrial Design and Engineering Graphics (Jun 2007)

PROFILE MODIFICATION INFLUENCE ON THE CONTACT RATIO FOR STRAIGHT BEVEL GEAR

  • VELICU Doru,
  • MOLDOVEAN Gheorghe

Journal volume & issue
no. 3

Abstract

Read online

Bevel gear, as octoidal gear, is not accurate involute. As a result, unlike involute cylindrical gear, bevel gear is accomplished by using profile which are not modification or profile with zero modification. For bevel gear, profile modification is in principal aimed at increasing the strength of the tooth for the contact stress or bending stress. The paper presents an analysis of the way in which the contact ratio of the straight bevel gear is influenced by the profile modification, by the number of teeth of the pinion and by the gear ratio. In order to find the contact ratio, the virtual gear of the bevel gear is used, adequate to the frontal median cones.

Keywords