沟曲率半径系数对高速陶瓷球轴承润滑状态影响的研究  

Curvature Radius Coefficient of the Deep Research on the Effects of Groove Ceramic Ball Bearing Lubrication State

作　　者：向北平[1] 付康[1] 倪磊[1] 王文升[2] 

机构地区：[1]西南科技大学制造过程测试技术教育部重点实验室,四川绵阳621010 [2]中国工程物理研究院机械制造工艺研究所,四川绵阳621000

出　　处：《机械设计与制造》2018年第2期54-57,共4页Machinery Design & Manufacture

基　　金：国家重大仪器设备专项(2013YQ1304290201)

摘　　要：采用迭代法,建立高速深沟陶瓷球轴承点接触等温弹流润滑计算模型.根据实际载荷和工作环境,推导出轴承润滑的边界条件,对各种沟曲率半径系数的轴承模型进行数值仿真分析计算,得出了内外沟曲率半径系数分别与轴承压力区最高压力和膜厚的关系。结果表明:在相同载荷速度和润滑油的情况下,内圈沟曲率半径系数为0.5145和0.5196时,轴承内外圈与滚动体接触区最小膜厚相同,在这个区域内外圈接触区膜厚较为接近.在相同载荷速度和润滑油情况下,内外圈接触区最大压力随着沟曲率半径系数的增大而增大。通过与传统理论计算的对比,结果具有较好的一致性,研究结果对高速深沟球轴承参数优化具有指导意义。In order to establish the deep groove ceramic ball bearing point contact isothermal elastohydrodynamic lubrication calculation model, iterative method is used. According to the actual loading and working conditions, the boundary condition of bearing lubrication and all kinds of groove curvature radius coefficient of bearing model for numerical simulation analysis and calculation are deduce.The relationship ofihe inner and outgroove curvature radius coefficient with bearing pressure zone maximum pressure and the film thickness is obtainedrespectively. It is shown that as the same load speed and lubricating oil, when inner ring groove curvature radius coefficient is 0.5145 and 0.5196, the minimum film thicknessin thecontact region ofthe inner and out and the rolling element is equivalent. In this region, in the inner and outfilm thickness is relatively approximate. When the speed and lubricating oil isthe same, maximum pressure of the inner and outcircle contact region increases with the increase of groove curvature radius coefficient.Compared with the result of traditional theoretical calculation, the result of the study has a good agreement with it. Thus, the result will offer some preference to the application of high-speed small composite ceramic ball bearing.

关 键 词：迭代法 弹流润滑 高速陶瓷球轴承 沟曲率半径系数 点接触 

分 类 号：TH16[机械工程—机械制造及自动化]