高速圆柱滚子轴承保持架动态性能影响因素分析  

Analysis of Influencing Factors on Dynamic Performance of High Speed Cylindrical Roller Bearing Cage

作　　者：崔立 苏银 任德余 徐卫责 CUI Li;SU Yin;REN Deyu;XU Weize(College of Engineering,Shanghai Polytechnic University,Shanghai 201209,China;Technical Center,Zhejiang Tianma Bearing Group Co.,Ltd.,Huzhou Zhejiang 313200,China)

机构地区：[1]上海第二工业大学工学部,上海201209 [2]浙江天马轴承集团有限公司技术中心,浙江湖州313200

出　　处：《机床与液压》2021年第14期17-23,共7页Machine Tool & Hydraulics

基　　金：国家自然科学基金面上项目(51675323);上海市自然科学基金项目(20ZR1421000)。

摘　　要：建立圆柱滚子轴承保持架的动力学模型,分析圆柱滚子轴承的外圈油沟尺寸、滚子倒角尺寸、径向游隙、引导间隙参数对保持架动力学特性的影响。结果表明:轴承外圈油沟尺寸过大或过小会使保持架转动的稳定性降低,使得保持架打滑率偏高、应力偏大;滚子倒角尺寸对保持架碰撞力影响较小,但合理的滚子倒角半径尺寸有利于轴承保持架运转得更加稳定,降低保持架打滑率;增大轴承径向游隙会使保持架打滑率和应力增大,加速保持架疲劳失效;不合理的引导间隙会使保持架运动稳定性大幅度降低,引导间隙过小导致保持架与引导面摩擦力过大,易发生磨损失效,而过大则会使保持架质心涡动范围增大,稳定性降低。The dynamic model of the cylindrical roller bearing cage was established,and the influences of outer ring oil groove size,the roller chamfer size,the radial clearance and the guide clearance parameters on the dynamic characteristics of the cylindrical roller bearing cage were analyzed.The results show that unsuitable size of the oil groove of bearing outer ring can reduce the stability of the cage rotation,which leads to high slip rate and high main stress of the cage;the chamfering size of the roller has little influence on the stress condition of the cage,but reasonable chamfering radius size of the roller is beneficial to the stable operation of the bearing cage,and can reduce the slip rate of the cage;the increase of the radial clearance of the bearing can increase the slip rate and the main stress of the cage and accelerate fatigue failure of the cage;unreasonable guide clearance can greatly reduce the motion stability of the cage,too small guide clearance leads to too large friction between the cage and the guide surface,which is easy to cause wear and failure,while too large guide clearance can increase the vortex range of the mass center of the cage,and reduce the stability.

关 键 词：高速圆柱滚子轴承 动力学特性 保持架稳定性 打滑率 

分 类 号：TH133.33[机械工程—机械制造及自动化]