机器人用关节减速器的失效分析及改善措施

结合理化检测分析和有限元应力分析,研究了机器人用关节减速器摆线轮及行星轮在寿命试验过程中接触疲劳失效的成因.结果表明:摆线轮齿面失效形式为胶合,行星轮齿面失效形式为过度磨损.摆线轮和行星轮齿面接触疲劳强度设计值均满足服役要求,所用材料符合设计要求.根据金相检测结果,行星轮表面热处理性能不符合设计要求,导致齿面硬度和接触...

Failure analysis of joint reducer for robot and improvement measures

Causes of contact fatigue failure of the cycloidal and planetary gears in joint reducer for robot during the life test were studied by means of physical and chemical testing and finite element stress analysis. The results show that the failure mode of cycloidal gear surface is scuffing,and the failure mode of planetary gear surface is excessive wear. The design values of contact fatigue strength of cycloidal gear and planetary gear face meet the technical requirements,and the materials used meet the specification. According to the results of metallographic examination,the surface heat treatment performance of planetary gear does not meet the requirements,and the reduction in the hardness of gear surface and contact fatigue strength becomes the main reason for the failure of planetary gear. Based on the analysis results,the improvement measures for the subsequent manufacturing process of planetary gear are put forward.