高速圆柱滚子轴承保持架动力学特性分析  

Analysis on dynamic characteristics of cage in high-speed cylindrical roller bearing

作　　者：邓四二[1] 顾金芳[1] 崔永存[1] 孙朝阳[1] 

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《航空动力学报》2014年第1期207-215,共9页Journal of Aerospace Power

基　　金：国家"十一五"科技攻关项目(JPPT-115-189);国家"十二五"科技攻关项目(JPPT-ZCGX1-1);河南科技大学博士基金(09001398)

摘　　要：建立了高速圆柱滚子轴承动力学微分方程,采用精细积分法和预估-校正Adams-BashforthMoulton多步法相结合的算法,对高速圆柱滚子轴承动力学微分方程进行求解,并对保持架的动力学特性进行了理论分析.结果表明:过大的保持架间隙比不利于保持架稳定运转;在一个套圈固定、另一个套圈工作状态下,保持架引导方式采用旋转套圈引导时,保持架打滑率较低;保持架采用外引导方式时保持架质心运动较为稳定;在内外圈同向旋转且外圈转速高于内圈转速条件下,保持架采用外引导方式时,保持架打滑率较低;在内外圈反向旋转且外圈转速高于内圈转速条件下,保持架质心轨迹变得不规则;保持架采用外引导方式时,保持架打滑率为负值.Dynamic differential equation of a high-speed cylindrical roller bearing was established. Fine integral method and predict-correct Adams-Bashforth-Moulton multi-step method were used to solve the dynamic differential equations of high-speed cylindrical roller bearing. Then the dynamic characteristics of cage were analyzed and discussed. The result shows： it＇s unlikely to keep stable rotation of cage when the ratio of pocket clearance to guiding clearance becomes too large; when one of the rings is fixed, the other is working and the cage guided by the rotating ring has lower slip ratio; it is helpful for stable mass center motion of cage when the cage is guided by outer ring; when the bearing is co-rotating and its outer ring＇s speed is larger than its inner ring＇s speed, the cage is guided by outer ring, and the cage has lower slip ratio; when the bearing is counter-rotating and its inner ring＇s speed is smaller, mass center trajectory of cage becomes irregular; the value of cage slip ratio becomes negative when the cage is guided by outer ring.

关 键 词：圆柱滚子轴承 保持架引导方式 保持架动态特性 保持架打滑率 保持架质心轨迹 

分 类 号：V233.45[航空宇航科学与技术—航空宇航推进理论与工程]