Promoting excellence in mobility engineering

  1. FISITA Store
  2. Technical Papers

Calculation of Stresses in HCR Gears with Regard to Quality Grade
EAEC-07/PT-P11

Authors

Marina Franulovic - University of Rijeka
Bozidar Krizan - University of Rijeka
Robert Basan - University of Rijeka

Abstract

Keywords: High contact ratio gear, pitch error, stress

High transverse contact ratio (HCR) gears are increasingly frequent in use in automotive industry because of their increased load-carrying capacity compared to low contact ratio gears, although they are very sensitive to manufacturing errors. The standard calculation procedure of load distribution on tooth pairs in simultaneous contacts doesn't take into account the influence of the pitch errors. In this paper the new expressions for calculation of load distribution on spur involute HCR gears' teeth with pitch errors are established. The force distribution factors are introduced for this calculation. They are defined on the basis of equality of elastic deformation of the tooth pairs in simultaneous contact. The values of load shares calculated by using these expressions significantly differ from the values of load shares calculated by common expressions. The application of the presented expressions can improve the calculation of tooth root and contact stresses on gear teeth.

Add to basket