目前,现代的精密工程主要研究电主轴热误差的补偿技术,尤其是这种模型的鲁棒性和精度,受到了大家的密切关注,是因为高速数控机床的加工精度主要是受热误差的影响,而数控机床的主要热源就是电主轴的单元。本文主要进行了对电主轴温度场的研究、对热关键点的优化、提出两种分析模型,以及一种组合预测模型,有效改善了电主轴的加工精度。 At present, the modern precision engineering mainly studies the compensation technology of the thermal error of the spindle, especially the robustness and precision of this model. It is closely watched by everyone because the machining accuracy of the high-speed CNC machine tool is mainly affected by the thermal error, The main source of CNC machine tools is the electric spindle unit. In this paper, the main research on the temperature field of the spindle, the optimization of the thermal key points, proposed two analysis models, as well as a combination prediction model, effectively improve the machining accuracy of the spindle.