数控卧轴平面磨床砂轮主轴-轴承系统的热-结构耦合分析  

Thermal-structural Coupling Analysis of Spindle-bearing System of Grinding Wheel of Surface Grinder

作　　者：欧阳牧英 周里群[1] 龙婷 李玉平[1] Ouyang Muying;Zhou Liqun;Long Ting;Li Yuping(School of Mechanical Engineering,Xiangtan University,Hu′nan Xiangtan 411105,China)

机构地区：[1]湘潭大学机械学院,湖南湘潭411105

出　　处：《机械科学与技术》2018年第11期1737-1743,共7页Mechanical Science and Technology for Aerospace Engineering

基　　金：湖南省自然科学湘潭联合基金项目(2016JJ5025);湖南省教育厅平台基金项目(15K129)资助

摘　　要：以某型数控卧轴矩台平面磨床为研究对象,对其砂轮主轴-轴承系统进行了温度分布与热变形的有限元仿真。基于滚动轴承热态特性理论与传热学理论,利用ANSYS Workbench软件对主轴-轴承系统进行稳态和瞬态的温度场仿真,得到了轴承滚子与内外圈滚道温度随时间的变化规律;根据热-结构耦合分析理论和温度场仿真结果,对主轴-轴承系统进行了热-结构耦合分析,得到了主轴在径向、切向与轴向3个方向的热位移与热应力的变化规律,从而揭示了由轴承摩擦产生的热效应造成的温度升高与主轴产生热变形及热位移之间的关系。The finite element simulation of the temperature distribution and the thermal deformation of the grinding wheel spindle bearing system is carried out with a certain type of horizontal grinding machine.Based on the theory of thermal characteristics of rolling bearing and the theory of heat transfer,ANSYS Workbench software is used to simulate the steady-state and transient temperature field of the spindle-bearing system.The variation law of the roller and the raceway temperature of the bearing roller and the inner and outer ring are obtained.Thermo-structural coupling analysis and temperature field simulation and the thermo-structural coupling analysis of the spindle-bearing system are carried out,and the variation law of thermal displacement and the thermal stress of the spindle in radial,tangential and axial directions are obtained.The results reveal the relationship between the temperature rise caused by thermal effects produced by bearing friction and the thermal deformation and thermal distortion of the spindle.

关 键 词：平面磨床 温度场 主轴-轴承系统 热-结构耦合 

分 类 号：U418[交通运输工程—道路与铁道工程]