内外圈油沟几何尺寸对轴承等效应力和最大正交剪切应力的影响  

Effect of Geometrical Size of Oil Groove on Bearing Stress

作　　者：宋杨法 黄志辉[1] 王玉辉[2] 雷亚南 SONG Yangfa;HUANG Zhihui;WANG Yuhui;LEI Yanan(State Key Laboratory of Traction Power,Southwest Jiaotong Universty,Chengdu 610031 China;Hunan Vocational College of Railway Technology,Zhuzhou 412006 China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]湖南铁路科技职业技术学院,湖南株洲412006

出　　处：《西华大学学报（自然科学版）》2022年第3期21-26,共6页Journal of Xihua University:Natural Science Edition

基　　金：国家自然科学基金项目(U19A20109)。

摘　　要：针对如何选择合适的轴箱轴承油沟尺寸的问题,文章利用HyperMesh软件根据轴箱轴承径向载荷分布情况建立了轴承有限元模型,通过有限元法分析轴承油沟在滚道方向的尺寸L(L为1.2、1.5、1.8、2.1、2.4和2.7 mm)对轴承Von Mises应力和最大正交剪切应力的影响。结果表明:轴承油沟在滚道方向的尺寸L变化时轴承各部分的Von Mises应力变化范围和变化率均不相同;L为2.1 mm左右时既可以提供润滑,减少磨损,同时又能够降低轴承各部分的Von Mises应力;轴承内圈的最大正交剪切应力明显高于轴承外圈和滚子的最大正交剪切应力;L为2.1 mm时可最大程度降低轴承的最大正交剪切应力,提高轴承的疲劳寿命。Aiming at the problem of selecting the appropriate oil groove size of axle box bearing,the HyperMesh software was used to establish the bearing finite element model according to the radial load distribution of the axle box bearing,and the dimension L of the bearing oil groove in the raceway direction was analyzed by the finite element method(L is 1.2,1.5,1.8,2.1,2.4 and 2.7 mm)on the bearing Von Mises stress and the maximum orthogonal shear stress.The results show that the change range and rate of Von Mises stress of each part of the bearing are different when the size L of the bearing oil groove changes in the raceway direction.When the size of the oil groove in the raceway direction L is about 2.1mm,it can not only provide lubrication and reduce wear,but also reduce the Von Mises stress of each part of the bearing.The maximum orthogonal shear stress of the bearing inner ring is obviously higher than that of the bearing outer ring and roller.When the geometric dimension of the oil groove in the raceway direction L is 2.1mm,the maximum orthogonal shear stress of the bearing can be greatly reduced and the fatigue life of the bearing can be improved.

关 键 词：轴承 油沟几何尺寸 轴承应力 有限元法 

分 类 号：TH133.33[机械工程—机械制造及自动化]