轴承球变曲率研磨盘沟槽结构参数数值优化研究  

Numerical optimization on groove structure parameters of bearing ball with variable-radius V-groove

作　　者：李晓琪 柯明峰 祝佳俊 周芬芬 吕冰海[1] LI Xiao-qi;KE Ming-feng;ZHU Jia-jun;ZHOU Fen-fen;LV Bing-hai(Faculty of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310014,China;Faculty of Mechanical Engineering,Taizhou University,Taizhou 318000,China)

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310000 [2]台州学院机械工程学院,浙江台州318000

出　　处：《机电工程》2021年第2期222-227,共6页Journal of Mechanical & Electrical Engineering

基　　金：国家重点研发计划资助项目(2018YFB2000502);国家自然科学基金资助项目(U1809221)。

摘　　要：针对轴承球变曲率沟槽加工方法中沟槽结构参数优化问题,采用了数值仿真分析法,研究了研磨盘沟槽偏心距、沟槽半角、滚道极径及沟槽间距4个主要沟槽几何参数,对球面加工轨迹点分布均匀性的影响规律。设计了正交仿真试验,分析了沟槽几何参数对球面加工轨迹均匀性的影响权重,并得到了优化几何参数组合;最后,开展了轴承球的研磨实验研究。研究结果表明:变曲率沟槽最佳的结构参数为,偏心距/球径比4,沟槽半角45°,沟槽滚道极径/球径比60,沟槽间距系数2;在优化的槽形结构下,加工4 h后,球度误差从0.057μm降低至0.022μm,优于其他槽形结构下的加工结果;根据仿真分析,优化的研磨盘沟槽结构能够获得更好的球面轨迹均匀性,球面轨迹分布越均匀,加工后的球度误差越小。Aiming at the optimization issue of the groove geometric parameters for the variable-radius V-groove lapping method of the bearing ball, the influence of groove geometric parameters, including the eccentricity, the half angle, the raceway pole diameter and the grove space, on the uniformity of the distribution of spherical machining trajectory points was analyzed by numerical simulation. The influence weight of the four main parameters on the spherical machining trajectory uniformity was analyzed by orthogonal simulation experiments. The bearing ball lapping experiment was carried out. The experimental results indicate that the best geometric parameter combination is an eccentricity to ball diameter ratio of 4, a groove half angle of 45°, a groove raceway pole diameter to ball diameter ratio of 60, and a groove space coefficient of 2. After 4 hours of processing under the optimized groove parameter combinations, the sphericity error reduces from 0.057 μm to 0.022 μm, which is better than the processing results under other groove parameters. According to the simulation analysis, the optimized groove structure of lapping plate can obtain better spherical trajectory uniformity. The more uniform the spherical trajectory distribution is, the smaller the sphericity error can be after processing.

关 键 词：轴承球 研磨 变曲率沟槽 结构参数优化 

分 类 号：TH133.33[机械工程—机械制造及自动化] T580.68[一般工业技术]