高速电主轴温度分布及其影响因素

发布时间：2018-03-28 03:13

  本文选题：电主轴　切入点：温度场　出处：《沈阳建筑大学学报(自然科学版)》2017年04期

【摘要】：目的分析170SD30电主轴温度场分布情况,为提高主轴加工精度提供理论依据.方法建立电主轴数学模型及1/4三维几何模型,实验验证电主轴模型的可靠性.利用COMSOL软件模拟电主轴的温度分布,研究主轴转速、径向磨削力对电主轴温升的影响.结果电主轴的最高温度出现在后轴承处,温度为47.7℃;电主轴最低温度出现在冷却水水道处,温度为16.2℃;转子到定子间的空气温度迅速递减;在冷却液流量达到0.35 m3/h时,对比电主轴后轴承外表面处温度的实验数据与模拟数据,平均温差为0.25℃,误差为1.3%.结论轴承和转子处于高温区,由于轴承发热率大,而后轴承所处位置的结构不利于散热,导致后轴承温度最高;由于定、转子间隙的传热系数低,致使转子到定子的温度急剧降低;转速对后轴承温升影响最大,而磨削力对前轴承温升影响最大.
[Abstract]:Objective to analyze the temperature field distribution of 170SD30 motorized spindle and to provide theoretical basis for improving the machining accuracy of spindle. Methods the mathematical model and 1 / 4 3D geometric model of motorized spindle were established. The reliability of the motorized spindle model is verified by experiments. The temperature distribution of the motorized spindle is simulated by COMSOL software, and the influence of spindle speed and radial grinding force on the temperature rise of the motorized spindle is studied. The results show that the maximum temperature of the motorized spindle appears at the back bearing and the temperature is 47.7 鈩，

本文编号：1674498