Research on Accelerated Life Test Method for Fatigue Failure of Flexible Bearings
In view of the testing and evaluation requirements of harmonic drive with long life and high reliability.The conven-tional life test cycle is long and the cost is high,so it is urgent to develop an accelerated life test method for harmonic drive fllexible bearings.An accelerated life test method was studied by increasing the rotational speed and raising the load applied on the reduc-ers to maintain the consistency of the oil film thickness.Firstly,the accelerating conditions were designed based on the analyses of force,motion and lubrication for the flexible bearings.Secondly,the test time was evaluated according to the stress analysis and the modified sn curve;finally,an experimental design was carried out to accelerate life test on the flexible bearings in the shf-25-120 harmonic drive.It showed that the design scheme could effectively improve the test efficiency and provide a theory for the ac-celerated life test of the bearings.
Flexible BearingsForce AnalysisMotion AnalysisLubrication AnalysisAccelerated Life Test
万方数据
维普
