RESIDUAL STRESS IN GEAR MANUFACTURING AND ITS INFLUENCE ON FATIGUE PROPERTIES

It is impossible to overlook the impact of residual stress on the fatigue strength and service life of gears.The research on the mechanism of residual stress on the fatigue strength of gears is of great significance for extending the gear's operational lifespan and enhancing its service performance.Although a great deal of research has conducted,no consensus has yet been achieved regarding the mechanism of residual stress in gear fatigue.Firstly,a systematic description of the generation mechanism and control method of residual stress was provided.The research progress on the impact of residual stress on gear fatigue properties and the existing testing methods of residual stress was summarized.Ultimately,the challenges encountered in the present study were sorted out,and three areas of future research were explored:quantitative research,regulation approaches and residual stress testing technologies.