摘要
以球轴承窗式保持架与滚珠间的流体动压润滑问题为研究对象,建立了滚珠-兜孔运动关系和力学分析的计算模型,建立了滚动轴承启动阶段和稳定运转阶段滚珠-兜孔油膜压力分布和油膜厚度的数值计算方法。以SKF61928MA轴承为研究对象,计算出轴承内圈转速、保持架角加速度,并研究了保持架兜孔尺寸对滚珠-兜孔润滑油膜的性能影响规律。结果表明,在稳定运转阶段,滚珠-兜孔间最小油膜厚度基本保持不变;在启动加速阶段,保持架加速度越大,油膜厚度越小。
A calculating model of ball-pocket rotation and mechanics analyses is established to investigate hydrodynamic lubrication between the ball and the straight-sided cage pocket in a ball bearing. An algorithm for calculating ball-pocket oil film pressure and film thickness is developed both for a bearings starting stage and steady running stage. Effects of inner-ring rotational speed, cage angular acceleration, and cage＇s geometry on ball-pocket oil film performance are numerically studied by choosing a SKF61928MA bearing as the calculating example. Influences of cage＇s geometry on ball-pocket oil film performance are also investigated. The results show that ball-pocket minimum oil film remains unchanged during bearing＇s steady running stage, while in bearing＇s starting stage, the larger the cage＇s acceleration, the smaller the minimum oil film will be.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第5期660-666,共7页
Journal of East China University of Science and Technology
关键词
球轴承
保持架
兜孔
润滑性能
ball bearing； cage； cage pocket； lubrication performance
作者简介
马方波（1984-），男，湖北人，博士生，研究方向为工程摩擦。
通信联系人：安琦，E-mail：anqi@ecust．edu．cn
