建立了周期变化的移动热源模型，并引进卷积概念，推导了计算断续磨削时工件表层非稳态脉动温度场的理论公式。该公式可以包容连续磨削的情况，且可计算任意时刻的瞬态温度分布。利用推得的公式对断续磨削时的温度场及其降温机理作了深入的研究，并对关于理论公式进行了实验校核 The periodic heat source model was established and the concept of convolution was introduced. The theoretical formula for calculating unsteady pulsating temperature field of workpiece during discontinuity grinding was deduced. The formula can accommodate the case of continuous grinding, and can calculate the transient temperature distribution at any moment. The deduced formula is used to study the temperature field and the cooling mechanism of intermittent grinding, and the experimental verification on the theoretical formula