高速陶瓷电主轴的热态特性分析

发布时间：2018-04-28 20:49

  本文选题：高速 + 陶瓷电主轴　； 参考：《精密制造与自动化》2016年04期

【摘要】：利用高速陶瓷电主轴热稳态和热瞬态的热力学模型,研究了热态性能对零件加工精度的影响,结合某高速精密加工中心的主轴单元,用有限元计算和分析了温度场及热平衡时间,将结果与实验进行比较,证明其有效性。结果表明:高速陶瓷电主轴在运转时热量主要来源于内置电机的损耗发热和轴承摩擦生热。前后轴承、定子和转子是热量集中处,最高温度出现在转子与定子间间隙处,为62.23℃,需采用良好的散热措施进行散热;精密磨削加工前应提前启动机床,进行10 min的预热,使机床各部件达到热平衡,减少热变形带来的加工误差,提高加工质量。该建模方法以及热力学模型可为高速电主轴的优化设计和研制提供一定的参考。
[Abstract]:Based on the thermodynamics model of thermal stability and thermal transient of high speed ceramic spindle, the influence of thermal properties on machining accuracy of parts is studied, and the spindle unit of a high speed precision machining center is combined. The temperature field and the thermal equilibrium time are calculated and analyzed by finite element method, and the results are compared with the experimental results to prove its validity. The results show that the heat of high speed ceramic spindle is mainly from the loss and heat of internal motor and friction heat of bearing. Before and after bearing, stator and rotor are heat concentration, the highest temperature appears in the gap between rotor and stator, it is 62.23 鈩，

本文编号：1816812