一种考虑润滑效应的角接触球轴承接触刚度计算方法  

A Calculation Method of Angular Contact Ball Bearing Contact Stiffness Considering Lubrication Effect

作　　者：陆凤霞[1] 赵志强[1] 潘文斌 鲍和云[1] Lu Fengxia;Zhao Zhiqiang;Pan Wenbin;Bao Heyun(National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Transmission System R&D Center,AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China)

机构地区：[1]南京航空航天大学直升机传动技术重点实验室,江苏南京210016 [2]中国航发湖南动力机械研究所传动系统研发中心,湖南株洲412002

出　　处：《机械传动》2021年第9期97-104,共8页Journal of Mechanical Transmission

摘　　要：建立了润滑工况下的高速角接触球轴承动力学模型,在滚珠与内/外圈的接触变形和接触刚度计算中,考虑高速转动中润滑油卷吸作用和挤压效应的影响,通过接触角和接触刚度的耦合迭代,得到考虑润滑效应的高速角接触球轴承轴向及径向刚度计算方法。结果表明,考虑润滑效应后,滚珠与内/外圈的接触角减小,轴承轴向/径向刚度增大;轴向载荷增加使轴向/径向刚度增大,且轴向载荷愈低,滑油作用愈明显;径向载荷增加使轴向刚度增大,径向刚度减小;滚珠数增加使轴向/径向刚度增大,且滑油作用更明显;相较4019型,4106型润滑油使轴承轴向/径向刚度增大;陶瓷滚珠轴承轴向/径向刚度比钢滚珠轴承大,且与转速呈近似线性关系。A dynamics model of high-speed angular contact ball bearings under the lubrication conditionis established,in the calculation of contact deformation and contact stiffness between ball bearing and inner/out-er ring,the influence of lubricating oil entrainment and squeeze during high-speed rotation is considered.Through the coupling iteration of contact angle and contact stiffness,the calculation method of axial and radialstiffness of high-speed angular contact ball bearings considering lubrication effect is obtained.The results showthat after considering the lubrication effect,the contact angle between the ball and the inner/outer ring decreas-es,and the axial/radial stiffness of the bearing increases.The increase in the axial load increases the axial/radi-al stiffness,and the lower the axial load,the more obvious the effect of lubricating oil.The increase in the radi-al load makes the axial stiffness increase and the radial stiffness decrease.As the number of rollers increases,the axial/radial stiffness increases,and the effect of lubricating oil is more obvious;Compared with 4019 lubri-cant,4106 lubricant increases bearing axial/radial stiffness.The axial/radial stiffness of ceramic ball bearings isgreater than steel ball bearings,and has an approximately linear relationship with the speed.

关 键 词：角接触球轴承 润滑 摩擦副 接触刚度 动力学 

分 类 号：TH133.3[机械工程—机械制造及自动化]