Life calculation and test method of RV reducer based on fatigue strength
To accurately calculate the life of rotate vector(RV)reducer under actual operation and reduce the cycle and cost of durability life test,taking RV reducer for industrial manipulator as research object.A fatigue life calculation method of RV reducer based on fatigue strength theory was presented,and a device was designed and built for accelerated life test.Combined with stress-fatigue life(S-N)curve and Palmgren-Miner rule,the basic life model of RV reducer was established.The mathematical expression of the RV reducer's rated life and service life was constructed,the law between the load and service life of the RV reducer was systematically studied,and the accelerated life test based on the S curve acceleration and deceleration control algorithm was designed.The test device was set up and the data were analyzed to verify the accuracy of the life calculation method.The results showed that the relative error between the life obtained by the fatigue life calculation method and the test results was only 6.3％,the acceleration factor was 20.7,and the test cycle and cost reduction effect were remarkable.
industrial robotRV reducerfatigue strength theoryfatigue lifeaccelerated life test
万方数据
维普
