高速铁路客车圆锥滚子轴承滚子的凸度分析  

Analysis on Roller Convexity of Tapered Roller Bearing for High Speed Railway Coach

作　　者：张乐宜[1] 薛玉君[1,2] 牛青波[3] 叶军[3] 

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]河南科技大学河南省机械设计及传动系统重点实验室,河南洛阳471003 [3]洛阳轴研科技股份有限公司,河南洛阳471039

出　　处：《机械设计与制造》2014年第9期72-74,77,共4页Machinery Design & Manufacture

基　　金：国家科技支撑计划(2011BAF09B01);教育部新世纪优秀人才支持计划项目(NCET-11-0941);河南省科技创新人才计划项目(124100510022)

摘　　要：以高速铁路客车圆锥滚子轴承为研究对象,采用有限元法研究不同凸形和凸度量对滚子与滚道之间接触应力及应力分布的影响,通过计算分析确定圆锥滚子轴承滚子合理的凸形和凸度量。分析结果表明,对数母线型滚子和合理的凸度量能降低滚子与滚道接触引起的边界应力集中,而且一定的载荷都会对应一个较优的凸度量区间,凸度量过大或过小不但没有降低边界应力集中,反而会引起滚子端部和中间的应力差值,减弱滚子沿轴线方向应力分布的均匀性。Taking tapered roller bearing of high speed railway coach as research object, the effects of different convexity and convexity values on contact stress and stress distribution between roller and raceways have been studied by the finite element method. The optimal convexity and convexity value of tapered roller bearihg have been obtained by calculating. The results show that the roller with logarithm profile and reasonably convexity values can reduce the border stress concentration caused by contact between rollers and inner. Furthermore, a certain load corresponds to a certain range of optimal convexity value. Convexty value of rollersi too large or too small could not reduce the border stress concentration, instead, cause the difference of stress between the ends and middle of roller, and weaken the uniformity of stress distribution along the axis of roller.

关 键 词：圆锥滚子轴承 有限元分析 凸度 对数曲线 

分 类 号：TH16[机械工程—机械制造及自动化]