高速电主轴系统的热瞬态分析  

Thermal Transient Analysis for High-speed Motorized Spindle System

作　　者：苏宇锋[1] 袁文信[1] 苏六帅[1] 刘德平[1] 汪玉平[2] 

机构地区：[1]郑州大学机电一体化研究所,河南郑州450001 [2]安阳鑫盛机床股份有限公司,河南安阳455000

出　　处：《机床与液压》2013年第13期26-28,共3页Machine Tool & Hydraulics

基　　金：国家科技重大专项资助(2009ZX04001-033);河南省教育厅重点项目资助(12B460022)

摘　　要：以CX8075型车铣复合加工中心的电主轴为研究对象,对其进行三维建模,利用工程有限元分析软件ABAQUS进行瞬态的热—结构耦合分析,研究了主要热源附近的温升变化和主轴轴端的热变形的变化趋势。分析结果表明,电主轴温升最大的部位位于主轴电机的定子和前后轴承的滚动体;主轴的轴向和径向热误差主要在前3 000 s变化较大,因此在加工前对机床适当地预热能够一定程度上减少热误差对加工精度的影响,为进一步研究机床的热误差提供了理论依据。By taking the motorized spindle of CX8075 turn-milling combined CNC machine center as a research object, its three dimensional model （3D） was established, and the transient thermal-structural coupling analysis was carried out by using engineering finite element analysis （FEA） software ABAQUS. The change of temperature near the main heat source and the trend of change of thermal deformation at the end of spindle were researched. The analysis resuh shows： the temperature of the motorized spindle is in- creased most in the stator and the rolling element of the front and back bearing in spindle motor, and the axial and radial thermal error of spindle is occurred mainly in the 3 000 second from start. Therefore, the effect to machining precision by thermal error can be reduced in a certain degree by suitably pre-heating the machine tool before machining, which provides theoretical basis to further research for the thermal error of the machine.

关 键 词：电主轴 有限元分析 热-结构特性 

分 类 号：TG502[金属学及工艺—金属切削加工及机床] TH122[机械工程—机械设计及理论]