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利用相变材料固—液相变、液—固相变吸收或释放相变潜热而自身温度保持恒定的特性，将其引入精密机床热位移控制领域，建立起精密机床恒温部件传热模型；研究了相变材料复合恒温构件在机床热变形控制技术中的应用，在分析相变传热的基础上，讨论了包含相变过程二维传热特性，并推导了其传热过程的泛函表达式；利用有限元法计算复合相变材料恒温构件机床立柱的温度场和热位移值，并将之与实测值比较，二者基本吻合。实验结果表明相变材料复合恒温构件在减小精密机床部件的热位移方面效果明显，为机床热位移控制开辟了新思路，具有一定的实用价值和应用前景。
The phase-change material solid-liquid phase change, liquid-solid phase change absorption or release of latent heat of phase transformation and its own temperature is kept constant characteristics, it is introduced into the field of precision machine tool thermal displacement control, the establishment of a precision machine tool thermostatic component heat transfer model; study Based on the analysis of the phase change heat transfer, the two-dimensional heat transfer characteristics of the phase change process are discussed and the functional expression of the heat transfer process is deduced The finite element method was used to calculate the temperature field and the thermal displacement value of the column of composite phase change material thermostatic component machine and compare them with the measured values. The experimental results show that the phase change material composite thermostat component has obvious effect in reducing the thermal displacement of the precision machine tool components and opens up new ideas for the thermal displacement control of the machine tool, which has certain practical value and application prospect.