电主轴冷却系统设计与仿真优化

为解决电主轴因内部温度场复杂而造成冷却效果差的问题，设计了一种用于电主轴冷却的水冷机系统。根据电主轴热特性分析结果，提出了水冷机冷却方案，计算了相关的传热参数，并建立了电主轴温度-流速控制模型。然后，利用ANSYS Fluent软件对电主轴进行了流体冷却有限元仿真，并通过电主轴冷却实验对仿真结果进行了验证。通过对比仿真结果和实验结果可知，冷却后电主轴电机定子最高温度约下降了60%，转轴的形变量约降低了70%。结果表明：利用水冷机系统对电主轴进行冷却具有良好的冷却效果，这可为高精密机床主动热控制技术的研究提供一定的借鉴和参考。

Design and simulation optimization of motorized spindle cooling system

In order to solve the problem of poor cooling effect caused by complex internal temperature field of motorized spindle, a water cooler system for motorized spindle cooling was designed. According to the analysis results of the thermal characteristics of motorized spindle, a water cooler cooling scheme was proposed, the relevant heat transfer parameters were calculated, and the temperature?velocity control model for the motorized spindle was established. Then, the finite element simulation of fluid cooling for motorized spindle was carried out by ANSYS Fluent software, and the simulation results were verified by the motorized spindle cooling experiment. By comparing the simulation results and experimental results, it could be seen that the maximum temperature of the motorized spindle motor stator decreased by 60% and the deformation of the shaft decreased by 70% after cooling. The results show that the water cooler system has a good cooling effect on the motorized spindle, which can provide a certain reference for the research of active thermal control technology of high-precision machine tools.