深沟球轴承冠形保持架结构参数对其性能的影响

Influence of Structural Parameters of Deep Groove Ball Bearing Crown Cage on Its Performance

基于滚动轴承动力学理论,建立了冠形保持架深沟球轴承动力学微分方程组,采用预估-矫正变步长积分法对方程组进行求解。以6210深沟球轴承为例,分析兜孔修形半径、爪部长度对保持架运转平稳性和强度的影响,结果表明:保持架运转平稳性随兜孔修形半径增大先增大后减小,随爪部长度增大无变化;保持架应力随修形半径增大先减小后增大,随爪部长度增大先减小后增大;保持架变形量随修形半径增大而增大,随爪部长度增大先增大后减小。

Based on dynamic theory of rolling bearings,the dynamic differential equations of deep groove ball bearing with crown cage is established,and the prediction-correction variable step-size integral method is used to solve the equations.Taking 6210 deep groove ball bearing as an example,the effects of pocket profiling radius and claw length on running stability and strength of the cage are analyzed.The results show that:the running stability of the cage increases first and then decreases with increase of pocket profiling radius,and has no change with change of claw length;the stress of the cage decreases first and then increases with increase of profiling radius,and decreases first and then increases with increase of claw length;the deformation of the cage increases with increase of profiling radius,and increases first and then decreases with increase of claw length.