关键词: 轴套式研磨工艺, 球面滚子, 运动学分析, 往复运动, 表面创成机制

Abstract:  In order to reveal the influence laws of reciprocating motions of lapping tools on geometrical accuracy of spherical rollers in new axial sleeve type spherical roller lapping processes, a spherical roller kinematics model was established for simulation calculation, and a material removal model was set up based on Prestons equation, which was used to deduce material removal of spherical roller at each angle of circumferential direction and distribution of texture of rolled surfaces, and then carried out the tests of spherical roller lapping. The results show that the errors between relative sliding rate and simulated value are as 8.33% ~10.94%. The errors of the simulated values for percentage of polar deviation and sliding rate correction are as 11.2%~17.1%, and the roundness errors of ground spherical rollers reach a minimum value of 0.78 μm. The rolling surface texture direction angle is differentially distributed and positively correlated with the surface roughness. The test results validate the accuracy of kinematics simulation analysis, which is instructive for improving the roundness error and surface roughness of the new process.

Key words: axial sleeve lapping process, spherical roller, kinematics analysis, reciprocating motion, surface formation mechanism