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热模型的发展为普通磨削过程提供了可靠的计算方法。工件的磨削温度与运动参数的关系可方便地用这种热模型来确定。当每次只考虑一个运动参数的影响时,它和早先发表的磨削实验结果是一致的(有时也有矛盾)。随运动参数变化的磨削力和所需能量的大小,表明了所加工的材料是易磨还是难磨。此外,各种材料的特性,特别是热常量在描述磨削期间的热负荷时是很重要的。它可以计算工件受热区的深度,可以估量预计的工件烧伤和评定残余应力的原因。有些情况下,还可计算出真实残余应力的分布情况。本文也考虑到瞬时温度影响和实际工件几何形状的相对重要性。切断磨削热模型的发展说明了普通磨削和切断磨削间的根本区别,特别是对于工件材料里的热平衡和热分布进行了详细地描述。缓进给强力磨削(就热分布来说,可认作介于普通磨削和切断磨削之间的一种中间方式)的经验建立指出,(外圆)磨床的一种新概念。这种新概念指出了在热平衡和热流分布方面的那些差别。这必将导致热损伤研究工作,进一步开发。
The development of thermal models provides a reliable method of calculation for ordinary grinding processes. The relationship between the grinding temperature of the workpiece and the kinematic parameters can easily be determined using this thermal model. When considering only one motion parameter at a time, it is consistent (and sometimes contradictory) with previously published grinding experiments. The grinding force and the amount of energy required as a function of the movement parameters indicate whether the material being processed is easy to wear or hard to wear. In addition, the characteristics of various materials, especially thermal constants, are important in describing the thermal loading during grinding. It calculates the depth of the heated zone of the workpiece, estimates the expected burn of the workpiece, and evaluates the cause of the residual stress. In some cases, the distribution of true residual stresses can also be calculated. This article also considers the relative importance of instantaneous temperature effects and the actual workpiece geometry. The development of the cut-off thermal model illustrates the fundamental difference between normal grinding and cutting grinding, particularly with regard to thermal balance and heat distribution in the workpiece materials. The gradual build-up of experience for intensive grinding, an intermediate way of thinking about the heat distribution between normal grinding and cutting grinding, points to a new concept of (external) grinding machines. This new concept points out those differences in heat balance and heat flow distribution. This will surely lead to thermal damage research and further development.