内圈离心位移对高速角接触球轴承刚度的影响

以弹性力学理论、滚动轴承动力学和沟道控制理论为基础,计算了角接触球轴承内圈在离心力作用下的径向位移,给出了计及内圈离心位移影响时,高速角接触球轴承滚动体与内、外圈的接触刚度与轴承整体的径向刚度、轴向刚度、角刚度的计算方法和相应程序。对7012/CD轴承的计算结果表明,轴承内圈外径的离心位移随转速增加而增大,在高速条件下其值较大,不容忽视;轴承内圈离心位移对内圈接触刚度和轴承径向刚度影响较大,导致内圈接触刚度和轴承径向刚度相对增大;对外圈的接触刚度、轴承轴向刚度和角刚度的影响很小;随着转速的增加与内圈离心位移的增大,对轴承内圈接触刚度与轴承径向刚度的影响会更加明显。因此,为使高速角接触球轴承的刚度分析更加精确、更加接近实际,必须考虑内圈离心位移的影响。

Influence of inner ring centrifugal displacement on the stiffness of high-speed angular contact ball bearing

Based on the elastic theory,dynamics and raceway control theory of the rolling bearing,inner ring centrifugal displacement of angular contact ball bearing was calculated,considering the influence of inner ring centrifugal displacement the comprehensive method and its corresponding program were given for calculating the contact stiffness of balls and inner/outer raceways and radial,axial,angular stiffness of the whole bearing.Taking 7012/CD bearing as an example,the results show that,inner ring centrifugal d...