摘要
以四点接触球轴承为研究对象,针对四点接触球轴承旋转精度开展研究,提出了同时考虑轴承内圈和外圈圆度误差的轴承旋转精度数值计算方法。以轴承径向跳动量描述轴承的旋转精度,根据四点接触球轴承的结构特点及运动关系,构建了轴承径向跳动的数学模型,并基于Matlab编写程序进行仿真计算。结果表明,内圈沟道谐波阶次不变时,轴承的旋转精度会随着谐波幅值的增大而降低;当内圈谐波阶次为3即内圈沟道廓形为三棱圆时,轴承径向跳动最小,轴承旋转精度最高;当外圈圆度误差谐波次数与钢球的个数存在整倍关系时,外圈的径向跳动最大,当外圈圆度误差谐波次数是钢球个数一半的奇数倍时,外圈径向跳动的值最小。
Taking the four-point contact ball bearing as the research object,the research of the rotation accuracy of the four-point contact ball bearing is carried out,and the numerical calculation method of the bear ing rotation accuracy considering the roundness error of the inner ring and the outer ring of the bearing is pro posed.The radial runout of bearing is used to describe the rotation accuracy.According to the structural charac teristics and motion relationship of the four-point contact ball bearing,the mathematical model of the bearing radial runout is constructed,and the program is programmed on Matlab for simulation calculation.The results show that when the harmonic order of the inner raceway is constant,the rotation accuracy of the bearing will de crease with the increase of the harmonic amplitude.When the harmonic order of roundness error of the inner ring is 3,that is,the profile of inner raceway is a triangular circle,the radial runout of the bearing is lowest and the rotation precision of bearing is the highest.The radial runout of the outer ring is the largest when the harmon ic order of roundness error of the outer ring is the integral relationship of the number of steel balls.The value of the outer ring radial runout is the smallest when the harmonic order of roundness error of the outer ring is an odd multiple of half the number of steel balls.
作者
陈月
邱明
田凯文
杜辉
杨旭
Chen Yue;Qiu Ming;Tian Kaiwen;Du Hui;Yang Xu(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province,Henan University of Science and Technology,Luoyang 471003,China)
出处
《机械传动》
北大核心
2020年第5期37-41,共5页
Journal of Mechanical Transmission
基金
国家重点研发计划(2018YFB200203)。
关键词
四点接触球轴承
旋转精度
圆度误差
径向跳动
Four-point contact ball bearing
Rotation accuracy
Roundness error
Radial runout
