Residual stress of case-hardened thin-rimmed spur gear with internal straight-sided spline.

Abstract

This paper presents a study on the residual stress of case-hardened thin-rimmed spur gears with internal straight-sided spline. A heat conduction analysis of the temperature and an elastic-plastic analysis of the stress in a cooling process for the case-hardened thin-rimmed spur gear with the internal spline were carried out by 2-dimensional finite element method (FEM). The effects of the case depth and the position of keyways of the internal spline on the residual stress were clarified. The optimum case depth for the residual stress was also examined.