磨削加工电主轴热态分析与温升测试

Analysis of Thermal State and Temperature Rise Test of Electric Spindle in Grinding Process

通过分析电主轴的发热源,找出影响其温升特性的相关因素。采用ANSYS有限元分析软件对电主轴温度场进行分析,并对温升时产生的热变形进行仿真模拟,为进一步制定热误差补偿方案提供依据。针对电主轴内部温度难以检测的问题,建立温度预测模型,在红外测温法的基础上进行实验研究。结果表明,该方法能有效建立预警机制,可实现电主轴内部温度的预测和提前报警。

Fever is one of the most important factors affecting the dynamic performance of the spindle, and it has a serious impact on the processing precision of the electric spindle and prolong the service life of the machine tool. By analyzing the power source of the electric spindle, the related factors that affect the temperature rise characteristic are found out. Using ANSYS finite element analysis software, motorized spindle temperature field is analyzed, and the temperature rise of thermal deformation simulation provide the basis for the further development of thermal error compensation scheme. Aiming at the problems of difficultly measuring the internal temperature of the electric spindle, a temperature prediction model is established and experimental study is carried out by infrared thermometry. The results show that the method can effectively set up the early warning mechanism, can realize the prediction of the internal temperature of the electric spindle and advance the alarm.