数控机床高速电主轴的热态特性分析  

The thermal characteristic analysis of high-speed electric spindle of NC machine tools

作　　者：魏效玲[1] 李小锐[1] 玉新民 王杰华[1] 

机构地区：[1]河北工程大学机电学院,河北邯郸056038 [2]冀中能源邯郸矿业集团,河北邯郸056000

出　　处：《河北工程大学学报（自然科学版）》2012年第4期87-89,共3页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：河北省自然科学基金资助项目(F2010001047)

摘　　要：根据高速电主轴的结构、主要传热机理和热源的生热率计算,将计算得到的结果带入AN-SYS有限元分析软件,并建立电主轴有限元分析模型,进一步获得电主轴温度场信息。分析了轴承预紧力、电机转速、冷却空气流量对电主轴热态特性的影响,结果表明:预紧力的大小对主轴轴承的温升影响较小;电机转速与冷却空气流量的大小对主轴轴承的温升作用比较明显。根据研究结果提出了改善电主轴热态特性的具体措施。According to the structure of the high speed electric spindle, the main heat transfer mecha- nism and the rate calculation method of heat source production, the calculation parameters were put into ANSYS finite element analysis software and the element analysis model was established in order to get electric spindle temperature field information. The influence of bearing preloaded forces, the mo- tor speed, bearing cooling air flow rate on electric spindle hot modal were analyzed. The results show that the size of the preloaded force has little influence on the temperature rise of bearing ; Motor speed and cooling air flow have apparent influence on the temperature rise of bearing. According to the results, this paper puts forward improving electric spindle heat response measures.

关 键 词：高速电主轴 热态特性 有限元分析 ANSYS 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]