摘要
针对高速电主轴的温升及热变形的问题,以240XD J24y型电主轴为例,计算了电主轴的热源的发热量及传热系数。通过建立电主轴的热结构有限元模型,将主轴材料的物理特性及热态性能参数为随机变量,并应用将蒙特卡罗法和常规有限元法相结合的随机有限元法,利用ANSYS里的PDS分析模块,计算了电主轴的随机稳态温度场,并应用应力-强度干涉理论计算了电主轴的温升的可靠度,为电主轴的随机热变形的分析打下了很好的基础。
For the problem of the spindle thermal deformation and the temperature rise,taking 240XDJ24y electric spindle for example,the quantity of heat source and heat transfer coefficient were calculated.First through the establishment of spindle finite element model,the physical characteristics of the spindle material and thermal performance parameters were regarded as the random variables with the help of the stochastic finite element method which combined the Monte Carlo method and conventional finite element codes and the ANSYS analysis module of PDS,the random spindle temperature field was calculated,and calculated the reliability of the temperature rising of the spindle,with the application of stress-strength interference theory which lay the good foundation of the spindle random thermal deformation analysis.
出处
《轻工机械》
CAS
2011年第1期67-70,共4页
Light Industry Machinery
基金
国家科技重大专项(2009ZX04001-014-02)
关键词
机床技术
高速电主轴
随机有限元
Carlo模拟法
随机稳态温度场
machine tool technology
electric spindle
stochastic finite element
Monte—Carlo method
random spindle temperature field
