Convective Heat Transfer in the Grinding Process: Experimental Aspects

本研究考察了磨削液在常规磨削和蠕变磨削条件下的冷却能力。目的是分析发生在工件表面的对流换热，并最终预测留在工件中的总磨削能量的比例和工件温度。这项实验将解决四个测量：工件内部和表面的温度，磨削液的温度变化，磨削力和砂轮形貌。这项研究与另一项资助的并行建模工作相结合，将使人们对磨削的热方面有一个基本的了解。在美国，磨削约占机械加工支出的20%，因此具有重要的工业意义。磨削过程中产生的能量可能会对工件和砂轮造成热损伤。为了避免这种情况，经常使用研磨液，但它们的效果还没有得到很好的了解。该建议的总体目标是研究常规和蠕变进给磨削条件下磨削液的冷却能力，以便建立预测模型。

This research investigates the cooling ability of grinding fluids for both conventional and creep feed grinding conditions. The objective is to analyze the convective heat transfer occurring at the workpiece surface, and ultimately to predict the fraction of the total grinding energy which remains in the workpiece, and the workpiece temperature. This experimental effort will address four measurements: temperatures within the workpiece and at its surface, the change in temperature of the grinding fluid, the grinding forces, and the grinding wheel topography. This research, combined with a parallel modeling effort in another grant will permit a basic understanding of the thermal aspects of grinding. Grinding accounts for about 20 percent of the machining expenditures in the United States, and is consequently of great industrial importance. Energy generated during grinding may cause thermal damage the workpiece and wheel. To avoid this, grinding fluids are often used, but their effects are not well understood. The overall objective of the proposal is to investigate the cooling ability of grinding fluids for both conventional and creep feed grinding conditions so that a predictive model can be developed.