沟曲率半径(密合度)对四点接触球轴承疲劳寿命影响研究  

Research on the influence of groove curvature radius(osculation)on the fatigue life of four contact point ball bearings

作　　者：姚金池 于长鑫[2] 魏延刚 吕海霆[1] 李东炬 YAO Jinchi;YU Changxin;WEI Yangang;LYU Haiting;LI Dongju(School of Mechanical Engineering,Dalian University of Science and Technology,Dalian 116052,CHN;Wafangdian Bearing Group Co.,Ltd.,Wafangdian 116300,CHN;③Dalian Dayou High-tech Ceramics Co.,Ltd.,Dalian 116600,CHN)

机构地区：[1]大连科技学院机械工程学院,辽宁大连116052 [2]瓦房店轴承集团有限责任公司,辽宁瓦房店116300 [3]大连大友高技术陶瓷有限公司,辽宁大连116600

出　　处：《制造技术与机床》2025年第2期65-71,共7页Manufacturing Technology & Machine Tool

基　　金：辽宁省新能源汽车轻量化铸件数字化设计及智能制造重点实验室资助项目(2022JH13/10200058);辽宁省教育厅科学技术研究项目(LJKQZ20222330)。

摘　　要：采用Romax Designer工程分析软件,应用ISO/TS 16281—2008寿命计算方法,根据经典的滚动轴承理论,对某电机轴四点接触球轴承内部载荷分布、接触应力、套圈滚道等效动态滚动元件载荷和ISO/TS16281—2008寿命等进行了大量的计算,重点研究滚道沟曲率半径对轴承内部载荷分布、接触应力、套圈滚道等效动态滚动元件载荷和ISO/TS16281—2008疲劳寿命的影响。研究结果表明,轴承型号和制造质量、载荷条件、润滑条件和可靠度等其他条件确定时,存在一个相对最优的滚道沟曲率半径(密合度);当载荷条件不同时,相应最优的滚道沟曲率半径(密合度)不同。在所研究的具体条件下,由于轴系中的2个轴承所承受的载荷不同,因而,2个轴承的最优滚道沟曲率半径(密合度)不同。研究结果可为四点接触球轴承的设计方案提供参考。Using Romax Designer engineering analysis software and ISO/TS 16281—2008 life calculation method,based on the classic rolling bearing theory,a large amount of calculations were conducted on the internal load distribution,contact stress,equivalent dynamic rolling element load of the ring raceway,and ISO/TS 16281—2008 life of a four contact point ball bearing for a certain motor shaft.The influence of the raceway groove curvature radius on the internal load distribution,contact stress,equivalent dynamic rolling element load on the ring raceway and ISO/TS 16281—2008 fatigue life of the bearing is emphasized.The research results indicate that when other conditions such as bearing model and manufacturing quality,load conditions,lubrication conditions,and reliability are determined,there exists a relatively optimal curvature radius(osculation)for the raceway groove.When the load conditions are different,the corresponding optimal curvature radius(osculation)of the raceway groove varies.Under the specific conditions studied,due to the different loads borne by the two bearings in the shaft system,the optimal raceway groove curvature radius(osculation)of the two bearings is different.The research results can provide a reference for the design scheme of motor shaft bearings.

关 键 词：四点接触球轴承 沟曲率半径 密合度 内部载荷分布 接触应力 疲劳寿命 

分 类 号：O343.3[理学—固体力学] TH133.333[理学—力学]