计入套圈变形和润滑影响的球轴承动刚度研究  

Research on Dynamic Stiffness of Ball Bearings Considering Ferrule Deformation and Elastohydrodynamic Lubrication

作　　者：熊万里[1] 赵紫生 周阳[1] 吕浪[1] 侯志泉 

机构地区：[1]湖南大学国家高效磨削工程技术研究中心,长沙410082 [2]株洲联诚集团有限责任公司湖南省轨道装备冷却工程中心,株洲412001

出　　处：《中国机械工程》2015年第11期1421-1428,共8页China Mechanical Engineering

基　　金：国家科技重大专项(2013ZX04012-052)

摘　　要：针对传统拟静力学分析方法未考虑轴承套圈热变形、离心力变形和弹流润滑作用引起轴承内部沟道曲率中心与滚动体中心几何位置关系的变化,难以准确反映轴承动刚度不足的现状,建立了计入套圈变形和弹流润滑影响的轴承拟静力学修正模型。采用所建立的模型研究了轴承不同工作转速和预紧力条件下轴承热变形、离心力变形和润滑油膜对动刚度的影响规律,通过与Gupta等典型算例及实验的对比验证,证实了所建立模型及分析结果的有效性。Aiming at the shortage of traditional quasi-static analytical method which did not consid-er the changes in geometrical positions of bearing inner raceway curvature center and the rolling body center caused by bearing thermal deformation,the centrifugal force deformation and the elastohydro-dynamic lubrication effect,a bearing quasi-static modified model was established considering the effects of ferrule deformation and elastohydrodynamic lubrication.The effects of thermal deformation, the centrifugal force deformation and the lubricating oil film on bearing dynamic stiffness were studied by established model under conditions of different rotational speeds and bearing preloads.The validity of the established model was verified by comparison with the Gupta typical examples and experi-ments.

关 键 词：角接触球轴承 动刚度 套圈变形 弹流润滑 

分 类 号：TH133.33[机械工程—机械制造及自动化]