含不对中与滚珠分布误差的球轴承刚度波动特性  

Stiffness Fluctuation Characteristics of Ball Bearings with Misalignment and Ball Distribution Error

作　　者：徐宏阳 杨阳[2] 王鹏飞 马辉[1,3] XU Hong-yang;YANG Yang;WANG Peng-fei;MA Hui(School of Mechanical Engineering&Automation,Northeastern University,Shenyang 110819,China;China North Vehicle Research Institute,Beijing 100072,China;Key Laboratory of Vibration and Control of Aero-Propulsion System,Ministry of Education,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819 [2]中国北方车辆研究所,北京100072 [3]东北大学航空动力装备振动及控制教育部重点实验室,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2023年第3期382-391,共10页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展计划项目(20195208003).

摘　　要：轴承不对中可能导致保持架断裂和滚珠分布误差.为了分析不对中及滚珠分布误差对轴承刚度波动的影响,考虑外载荷及内、外圈不对中耦合情况,提出了一种含滚珠分布误差的深沟球轴承拟静力学模型.基于所提模型,进一步分析了外载荷及内、外圈不对中状态下,滚珠分布误差对深沟球轴承径向、轴向及倾覆刚度波动特性的影响.结果表明:外载荷及外圈不对中情况下,轴承刚度以滚珠通过外圈周期,即变柔度(VC,variable compliance)振动为周期进行波动.此时,滚珠分布误差的存在,会使轴承刚度以保持架转动周期进行规律性大幅波动.随主轴旋转的内圈不对中会使轴承刚度以一半的内圈转动周期进行波动,且滚珠分布误差会使刚度波动幅值增加.Bearing misalignment may result in cage fractures and ball distribution errors.In order to analyze the effects of misalignments and ball distribution errors on the bearing stiffness fluctuation,considering the external loads and misalignments of inner and outer races,a quasi-static model of deep groove ball bearings with ball distribution errors is proposed.Based on the proposed model,the effects of ball distribution errors on the fluctuation characteristics of radial,axial and overturning stiffness of deep groove ball bearings under the condition of misaligned inner and outer races and external loads are further analyzed.The results show that the stiffness of the bearings fluctuates with the period of the ball passing through the outer race,that is,VC(variable compliance)vibration under the condition of the misaligned outer race and external loads.At this time,because of the existence of ball distribution errors,the bearing stiffness significantly fluctuates with the cage rotation period.The misalignments of the inner race rotating with the spindle cause the bearing stiffness to fluctuate by half of the inner race rotation period.The stiffness fluctuation amplitude increases due to the ball distribution errors.

关 键 词：不对中 滚珠分布误差 球轴承 刚度 拟静力学模型 

分 类 号：TH113.1[机械工程—机械设计及理论] O322[理学—一般力学与力学基础]