滑动效应对球轴承滚动体缺陷频率影响的研究  

Influence of sliding effect on frequency of rolling element defect in ball bearing

作　　者：侯新玉 范君 马俊杰 付献斌 HOU Xinyu;FAN Jun;MA Junjie;FU Xianbin(School of Mechanical and Electrical Engineering,Tangshan Maritime Institute,Tangshan 063509,China;Institute of Information Engineering,Hebei University of Environmental Engineering,Qinhuangdao 066102,China)

机构地区：[1]唐山海运职业学院机电工程学院,河北唐山063509 [2]河北环境工程学院信息工程系,河北秦皇岛066102

出　　处：《机电工程》2024年第2期271-279,共9页Journal of Mechanical & Electrical Engineering

基　　金：河北省自然科学基金资助项目(E2022415005)。

摘　　要：在弹流润滑作用下,球轴承滑动效应引起的滚动体缺陷频率低于理论值,不利于对球轴承进行故障诊断,为此,建立了一种考虑弹流润滑作用下球轴承滑动效应的轴承动力学模型,研究了球轴承滑动效应对滚动体缺陷频率的影响。首先,基于轴承动力学理论和弹流润滑理论,分析了球轴承内各部件间的等效刚度与等效阻尼;然后,根据部件间受力关系,建立了考虑滑动效应的含滚动缺陷故障轴承动力学模型;最后,分析了弹流润滑作用下轴承滚动体与轴承内外圈间的滑动效应,获取了滑动效应对滚动体缺陷频率的影响,并通过试验对模型的正确性进行了验证。研究结果表明:由于球轴承滑动效应的存在,滚动体缺陷频率约为理论值的93.6%;通过增大载荷可抑制滑动效应对滚动体缺陷频率的影响,滚动体缺陷频率约为理论值的96.3%,但由于滑动效应始终存在,滚动体缺陷频率始终低于理论值。该研究结果为弹流润滑作用下球轴承的打滑抑制与故障诊断提供了参考依据,丰富了轴承故障动力学建模理论。In response to the problem that the frequency of rolling element defect caused by the sliding effect of ball bearing under elastohydrodynamic lubrication was lower than the theoretical value,which was not conducive to fault diagnosis of ball bearing.Therefore,a dynamic model of bearing considering the sliding effect of ball bearing under elastohydrodynamic lubrication was established,and the influence of sliding effect of ball bearing on the defect frequency of rolling elements was studied.Firstly,based on the theory of bearing dynamics and elastohydrodynamic lubrication,the equivalent stiffness and damping between various components in the ball bearing were analyzed.Then,based on the force relationship between bearing components,a dynamic model of bearing with rolling defect considering sliding effect was established.Finally,the sliding effect between the rolling elements and the inner ring and outer ring of the bearing under the action of elastohydrodynamic lubrication was analyzed,and the influence of the sliding effect on the defect frequency of the rolling element was obtained.The correctness of the model was verified through experiment.The research results show that due to the sliding effect of ball bearings,the frequency of rolling element defects is approximately 93.6%of the theoretical value.Increasing the load can suppress the influence of sliding effect on the frequency of rolling element defect,which is about 96.3%of the theoretical value.However,due to the constant existence of sliding effect,the frequency of rolling element defect is always lower than the theoretical value.The research results provide the reference basis for the slip suppression and fault diagnosis of ball bearings under elastohydrodynamic lubrication,and enrich the dynamic modeling theory of bearing faults.

关 键 词：深沟球轴承 轴承故障诊断 球轴承动力学模型 弹流润滑理论 滑动效应 滚动体缺陷频率 故障激励 

分 类 号：TH133.3[机械工程—机械制造及自动化]