振动工况下滚动轴承保持架稳定性分析  

Stability Analysis of Rolling Bearing Cage under Vibration Conditions

作　　者：黄俊熙 肖曙红[1] Huang Junxi;Xiao Shuhong(School of Electromechanical Engineering,Guangdong University of Technology,Cuangzhou 510006,China)

机构地区：[1]广东工业大学机电工程学院,广州510006

出　　处：《机电工程技术》2021年第11期30-32,95,共4页Mechanical & Electrical Engineering Technology

基　　金：国家自然科学基金项目(编号:50975051)。

摘　　要：由于枪钻主轴具有自身结构细长、刚性差的特点,在钻削时会产生颤振,从而对枪钻主轴轴承产生一个径向的振动。为了探究振动对轴承保持架稳定性的影响,利用ADAMS软件建立了该轴承的动力学仿真模型,利用ADAMS自带的CMD语言编写宏代码以快速添加接触约束。主要研究了振动工况参数和轴承结构参数对保持架打滑率和保持架质心涡动速度偏差比的影响。仿真结果表明:随着振动频率或振动幅值的增大,保持架的打滑率和保持架质心涡动速度偏差比也会随之增大,保持架稳定性降低;随着轴承沟曲率系数的增大,保持架的打滑率和保持架质心涡动速度偏差比先减少后增大,保持架的稳定性先增大后减少。Due to the slender structure and poor rigidity of the gun drill spindle, chatter vibration will occur during drilling, which will generate a radial vibration to the gun drill spindle bearing. In order to explore the impact of vibration on the stability of the bearing cage, the dynamic simulation model of the bearing was established using ADAMS software, and the macro code was written by using CMD language to quickly add contact constraints. The effects of vibration parameters and bearing structure parameters on cage slip rate and cage centroid whirl velocity deviation ratio were mainly studied. The simulation results show that with the increase of the vibration frequency or vibration amplitude, the slip rate of the cage and the deviation ratio of the cage centroid whirl speed will also increase, and the stability of the cage will decrease;as the curvature coefficient of the bearing groove increasing, the slip rate of the cage and the deviation ratio of the cage centroid vortex velocity first decrease and then increase, and the stability of the cage first increases and then decreases.

关 键 词：保持架 稳定性 动力学 

分 类 号：TH133.33[机械工程—机械制造及自动化]