摘要
角接触球轴承旋转精度检测需在合套状态下进行,增加了检测工序,不满足设计要求的轴承还需重新进行套圈配对。通过分析套圈接触状态,根据几何关系,建立了套圈精度参数解析模型。以7006型号为例,检测了套圈9个周向均布点的精度参数,计算得出的成品轴承径向跳动与旋转精度测量仪检测结果一致。为了得到旋转精度变化规律,采用4种曲线拟合轮廓,分别计算径向跳动变化,线性拟合函数得到的轮廓与检测结果接近。研究了沟曲率半径、沟底直径和壁厚差与旋转精度的关系,沟底直径分布规律影响旋转精度最明显,沟曲率半径几乎没有影响。文中方法可以实现仅检测套圈精度参数条件下即可得到成品轴承旋转精度,不仅有助于套圈配对,还避免了反复拆套合套。
The rotation accuracy detection of angular contact ball bearing(ACBB)needs to be carried out in the assembly,which increases the detection process.Bearings that do not meet the design requirements need to be re-matched with rings.By analyzing the contact state of the rings and according to the geometric relationship,an analytical model of the accuracy parameters of the rings is established.Taking 7006-ACBB as an example,the accuracy parameters of 9 circumferential uniform points of the rings are measured,and the radial runout of the finished bearing is calculated,which is consistent with the detection result of the rotating accuracy measuring instrument.In order to obtain the variation law of rotation accuracy,four kinds of curves are used to fit the contour,and the radial runout changes are calculated respectively.The contour obtained by linear fitting function is close to the detection result.The relationship between the rotation accuracy and the groove radius of curvature,the groove bottom diameter and the wall thickness difference are studied.The distribution law of the groove bottom diameter has the most obvious effect on the rotation accuracy,and the groove radius of curvature has little effect.The method in this paper can achieve the rotation accuracy of the finished bearing under the condition of only detecting the precision parameters of the ferrule,which is not only conducive to the matching of the rings,but also avoids the repeated disassembly and assembly of the rings.
作者
季晔
郑昊天
王东峰
马新忠
JI Ye;ZHENG Haotian;WANG Dongfeng;MA Xinzhong(School of Intelligent Manufacturing,Luoyang Institute of Science and Technology,Luoyang 471023,CHN;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,CHN)
出处
《制造技术与机床》
北大核心
2023年第2期175-180,共6页
Manufacturing Technology & Machine Tool
基金
国家自然科学基金(U1809221)
国家重点研发计划项目(2018YFB2000500)
河南省高等学校重点科研项目(22A460005)。
关键词
旋转精度
轮廓拟合
径向跳动
角接触球轴承
rotation accuracy
contour fitting
radial runoutt
angular contact ball bearing
