摘要
高速电主轴高度紧凑的结构使其在服役过程中散热困难,常采用油雾润滑和循环水冷方式强制降温。以一种新型电磁自平衡电主轴为对象,研究了异步电动机、滚动轴承和电磁平衡头生热原理;分析了主轴系统传热机制;采用有限元热分析对170MD12Y16-EMAB45电磁自平衡电主轴进行了稳态温度场分析,研究了冷却液流量、压缩空气流量对电主轴最大温升的影响规律。结果表明:电磁平衡头对电主轴温升影响总体很小,电磁自平衡电主轴具有良好热特性;获得了最佳温控参数,为这种电主轴的优化设计和工程应用奠定了基础。
Highly compact structure of high-speed motorized spindlemakes its cooling difficult in service process,usually using oil mist lubrication and circulating water cooling to force cooling. Taking a newtype of electromagnetic self-balancing motorized spindle as object,heat generation principle of asynchronous motor,rolling bearing and electromagnetic balancer is introduced. Then,heat transfer mechanism of spindle is analyzed. Finally,steady-state thermal field analysis of 170 MD12 Y16-EMAB45 motorized spindle was carried out by finite element analysis. Influence lawof coolant flowand compressed air flowon maximum temperature rise was studied. Results showthat electromagnetic balancer has little effect on whole temperature rise of motorized spindle,and then electromagnetic self-balanced motorized spindle is proven to have reasonable thermal feature. Optimum temperature control parameters are obtained,which lays a foundation for optimization design and engineering application of the proposed motorized spindle.
作者
樊红卫
吴腾庆
刘恒
肖玲
程文杰
FAN Hong-wei;WU Teng-qing;LIU Heng;XIAO Ling;CHENG Wen-jie(a.School of Mechanical Engineering;b.Department of Basic Courses,Xi＇an University of Science and Technology,Xi＇an 710054,China;2.School of Mechanical Engineering,Xi＇an Jiaotong University,Xi＇an 710049,China)
出处
《组合机床与自动化加工技术》
北大核心
2018年第8期46-49,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金:高品质自适应电磁平衡机理及自平衡电主轴动态特性研究(51605380)
中国博士后科学基金:高速机床电主轴自适应电磁主动平衡机理及平衡性能优化(2016M602842)
陕西省博士后科研项目:高速电主轴新型高品质自适应电磁平衡机理研究(2016BSHYDZZ08)
关键词
电主轴
电磁平衡头
温升
润滑
冷却
motorized spindle
electromagnetic balancer
temperature rise
lubrication
cooling
