中文摘要：

为了优化电主轴冷却系统,寻找环形冷却水道的最佳宽度,对170SD30-SY陶瓷电主轴实物进行了研究,以耦合传热数值计算理论为基础,利用软件ANSYS CFX对电主轴水冷系统中的流体流动和温度分布进行三维仿真计算,分析了具有环形冷却水道的电主轴冷却系统中,不同的冷却水道宽度对电主轴温度的影响。对比了水套与冷却水的温度与冷却水道宽度的关系。研究表明：冷却水入口速度一定时,随着冷却水道宽度的增加,冷却水流动走向由双向变为单向,电主轴温度先降低后升高;当水道内径为136mm时,冷却水道设计的最佳宽度为4mm。

英文摘要：

In order to obtain the optimal cooling water channel width, 170SD30-SY ceramic motorized spindle was studied. based on the thermal distribution .Motor spindle＇s water cooling system based on the software of ANSYS CFX was established. The cooling water channel width and temperature distribution in circular channel was analyzed. Motor spindle temperature of water jacket and cooling water was compared under different cooling water channel width. The research indicates that the flow direction of cooling water changes from a two-way to a one-way and the spindle temperature decreased after rose first when the water has the constant inlet velocity. The optional channel width of cooling water is 4mm when the inner diameter of channel width is 136mm.