摘要
热稳定性将严重影响高速运转电主轴的动态特性,因此对电主轴进行热力(或结构)耦合分析具有重要意义。首先,采用理论计算与数值仿真相结合的方法分析了电主轴的产热及传热机制;其次,对电主轴模型进行热—力弱耦合分析,得到了电主轴的热位移分布云图;最后,根据热位移修正仿真模型中的初始条件,得到了热效应下轴承的修正刚度。本研究可用于电主轴高速加工高精度要求的动态设计中。
Thermal stability would have considerably effect on the dynamic performance of high-rotation-speed electric spindle,in the case of which,it is of great significant to carry out coupling analysis on thermal power and structure of electric spindle.Firstly,the heat generating and transmission mechanism of the spindle were analyzed based on theoretical calculation combining with numerical simulation.Additionally,performing thermal weak coupling analysis on the spindle model and the heat displacement distribution nephogram of the spindle was obtained.Finally,correcting the initial condition of the simulation model according to heat displacement,the revised stiffness of the spindle under thermal effect was obtained.This study could be used in the high-accuracy dynamic design of the high-speed-machining（HSM）of electric spindles.
作者
韩晓珊
李海虹
HAN Xiao-shan;LI Hai-hong(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《机械工程与自动化》
2018年第4期3-5,共3页
Mechanical Engineering & Automation
基金
国家自然科学基金应急管理项目(51541501)
"1331工程"重点学科建设计划项目
关键词
电主轴
热力耦合
弱耦合
分析
electric spindle
thermodynamic coupling
weak coupling
analysis
