To address the problems of thermal damage to a workpiece surface caused by the instantaneous high temperature during grinding and the difficulty in monitoring temperature in real time, the temperature field in the case of composite surface grinding by a cup wheel is studied. In order to predict the grinding temperature, considering material removal and grinding force distribution, a non-uniform heat source model with different function distributions in the circumferential and radial directions in the cylindrical coordinate system is first proposed; then, the analytical model is deduced and the numerical model of the temperature field is established based on the heat source model. The validation experiments for grinding temperature field are carried out using a high-definition infrared thermal imager and an artificial thermocouple. Compared to the temperature field based on the uniform heat source model, the results based on the non-uniform heat source model are in better agreement with the actual temperature field, and the temperature prediction error is reduced from approximately 23% to 6%. Thus, the present study provides a more accurate theoretical basis for preventing burns in cup wheel surface grinding.

中文翻译：

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杯盘表面磨削中非均匀热源模型的温度场研究

为了解决由磨削过程中的瞬时高温引起的工件表面热损伤的问题以及实时监测温度的困难，研究了用杯形砂轮进行复合表面磨削时的温度场。为了预测磨削温度，考虑材料的去除和磨削力的分布，首先提出了在圆柱坐标系中沿圆周和径向分布函数不同的非均匀热源模型。然后推导解析模型，并基于热源模型建立温度场的数值模型。使用高清红外热像仪和人工热电偶进行磨削温度场的验证实验。与基于均匀热源模型的温度场相比，基于非均匀热源模型的结果与实际温度场更好地吻合，并且温度预测误差从大约23％降低到6％。因此，本研究为防止杯形齿轮表面磨削烧伤提供了更准确的理论基础。