接触热阻和热诱导载荷下的电主轴热特性  

Thermal Characteristics of Motorized Spindle Under Contact Thermal Resistance and Thermally Induced Load

作　　者：李振淼 刘泓滨[1] 吴智恒 张华伟 郭伟科 LI Zhenmiao;LIU Hongbin;WU Zhiheng;ZHANG Huawei;GUO Weike(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Institute of Intelligent Manufacturing,GDAS,Guangzhou 510070,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500 [2]广东省科学院智能制造研究所,广州510070 [3]广东省现代控制技术重点实验室,广州510070

出　　处：《组合机床与自动化加工技术》2023年第6期114-118,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：广州市重点研发计划项目(202206030006);广州市黄埔区国际科技合作项目(2021GH13)。

摘　　要：为了更准确地研究电主轴的热态性能,建立同时考虑接触热阻和热诱导载荷的电主轴流-热-固耦合模型。首先,基于轴承内部载荷计算理论和外滚道控制理论建立热诱导载荷的计算模型;其次,采用蒙特卡罗法建立接触热阻的计算模型;最后,以某型号电主轴为研究对象,采用ANSYS与MATLAB联合仿真方法,分析接触热阻和热诱导载荷与电主轴热态性能的关系,并通过搭建试验平台进行试验验证。研究表明,考虑接触热阻的电主轴整体温度比不考虑接触热阻高,热诱导载荷与轴承的生热量属于相互影响的关系,考虑热诱导载荷和接触热阻情况下的仿真与试验吻合更好。In order to study the thermal performance of motorized spindles more accurately,a fluid-heat-solid coupling model of the motorized spindle was established considering both the contact thermal resistance and the thermally induced load.Firstly,the calculation model of heat-induced load was established based on the calculation theory of bearing internal load and the control theory of outer raceway.Secondly,the calculation model of contact thermal resistance is established by monte-carlo method.Finally,taking a certain type of motorized spindle as the research object,the co-simulation method of ANSYS and MATLAB was used to analyze the relationship between the contact thermal resistance and heat-induced load and the thermal performance of the motorized spindle,and the test platform was built to verify the test.The results show that:the overall temperature of electric spindle considering thermal contact resistance is higher than that without considering thermal contact resistance,and the heat-induced load and the heat generation of bearing belong to the mutual influence relationship.The simulation and test agree better when considering thermal induced load and thermal contact resistance.

关 键 词：热诱导载荷 接触热阻 电主轴热特性 流-热-固耦合 

分 类 号：TH161[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]