高速电主轴角接触球轴承热-力耦合特性研究  

Research on Thermal-Mechanical Coupling Characteristics of High-Speed Motorized Spindle Angular Contact Ball Bearings

作　　者：胡鹏飞 罗金良[1] 罗彪[1] 冯文明 唐德文[1] HU Peng-Fei;LUO Jin-Liang;LUO Biao;FENG Wen-Ming;TANG De-Wen(School of Mechanical Engineering,University of South China,Hengyang Hunan 421001,China;Hengyang Taihao Communication Vehicle Co.,Ltd.,Hengyang Hunan 421001,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001 [2]衡阳泰豪通信车辆有限公司,湖南衡阳421001

出　　处：《机电产品开发与创新》2023年第2期76-79,共4页Development & Innovation of Machinery & Electrical Products

基　　金：衡阳市科技创新重大项目(202150013986)。

摘　　要：在高速电主轴转子系统中,角接触球轴承的工作特性受温升的影响显著,极易产生胶合。为了得到更加精确的角接触球轴承瞬态温度场,建立了考虑自旋的角接触球轴承生热及传热模型,并利用MATLAB软件得到了轴承的生热量,随后建立了轴承的三维参数化模型,并基于显示动力学理论在LS-DYNA平台上进行了热-力耦合有限元仿真分析,且对影响轴承瞬态温度场的主要因素进行了研究。研究结果表明:转速与温升呈非线性正相关;高转速下轴承温升对预紧力更加敏感;生热量随预紧力的增加逐渐增大,当施加的预紧力大于最小预紧力时,温升随预紧力增加而变大。研究可为高速电主轴轴承的设计和稳定性分析提供理论参考。In the high-speed motorized spindle rotor system,the working characteristics of angular contact ball bearings are significantly affected by temperature rise,and it is easy to produce scuffing failure.In order to obtain a more accurate transient temperature field,a heat generation and heat transfer model considering the spin was established,and solved by MATLAB software.Then,a three-dimensional parametric model of the bearing was established,and the thermal-mechanical coupling finite element simulation analysis was carried out on the LS-DYNA platform based on the theory of explicit dynamics,and the main factors affecting temperature were studied.The results show the non-linear positive correlation between rotational speed and temperature rise;the bearing temperature rise is more sensitive to the preload at high rotational speed;The heat generation increases gradually with the increase of the preload.When the applied preload is greater than the minimum preload,the temperature rise increases with the increase of the preload.The research can provide a theoretical reference for the design and stability analysis.

关 键 词：电主轴 高速角接触球轴承 显示动力学 参数化建模 热-力耦合 

分 类 号：TH133.334[机械工程—机械制造及自动化]