滚动轴承支承刚度计算  

Supporting stiffness calculation of the rolling bearing

作　　者：何芝仙[1] 刘喆[2] HE Zhi-xian LIU Zhe(Key Laboratory of Mechanics, Anhui Polytechnic University, 2.School of Mechanical ＆ Automobile Engineering, Anhui Polytechnic U Wuhu 241000 nivcrsity,Wuhu 241000)

机构地区：[1]安徽工程大学力学重点实验室,安徽芜湖241000 [2]安徽工程大学机械与汽车工程学院,安徽芜湖241000

出　　处：《机械设计》2016年第9期46-50,共5页Journal of Machine Design

基　　金：芜湖市科技计划重点资助项目(2014cxy07);安徽省自然科学基金资助项目(1208085ME77)

摘　　要：滚动轴承的支承刚度计算是研究轴-滚动轴承系统动力学的关键问题之一。文中以深沟球轴承为例,采用力法和Hertz理论研究滚动轴承的受力与变形关系,在此基础上得到滚动轴承的支承刚度计算公式。着重探讨滚动体位置变化、离心力的作用、轴承的游隙和预紧、径向力和轴向力作用等因素对滚动轴承支承刚度的影响。计算结果表明:离心力的作用、轴承的游隙和预紧、径向力和轴向力作用对滚动轴承的支承刚度影响较大,滚动体位置变化对滚动轴承的支承刚度影响较小。所得结果为准确计算轴-滚动轴承系统动力学问题提供了前提条件。Supporting stiffness calculation of rolling bearing is one of the key problems of axis-rolling bearing system dy- namics. A deep groove ball bearing was chosen to study the relationship between stress and its deformation using classic Hertzian elastic contact deformation theory and the force method. The formula of the supporting stiftness coefficient for the ball bearing was subsequently obtained according to the relationship. The bearing stiffness coefficient was affected by various as- pects, such as the position of roller, centrifugal force of roller, radial internal clearance of the bearing and action of retighten- ing force, radial and axial force, and etc. The calculation results showed that the bearing supporting stiffness was obviously af- feetedby centrifugal force of roller, radial internal clearance and retightening force of the bearing, radial and axial force. How- ever, the variation of roller position in bearing has less effect on the bearing supporting stiffness. The results obtainedprovided preconditionfor solving the dynamical problem of a shaft-bearing system.

关 键 词：力法 超静定问题 Hertz理论 

分 类 号：TH123[机械工程—机械设计及理论]