Mechanics of Metal Cutting for a Material of Variable Flow Stress
Mechanics of Metal Cutting for a Material of Variable Flow Stress
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DOI：
10.1115/1.3669887
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发表时间：
1963-11
期刊：
影响因子：
--
通讯作者：
P. Oxley
中科院分区：
文献类型：
--
作者：
P. Oxley
提出了一种新的分析方法，其中考虑了工作材料的可变流动应力特性。结果表明，刀具-切屑界面摩擦角的变化可以由剪切区机制的改变引起，例如，用四氯化碳作为“润滑剂”时观察到的矛盾行为可以用这种方式来解释。得出的结论是，如果要对切削过程进行实际预测，即在没有进行切削试验的情况下，则不能接受刀具-切屑界面摩擦角作为给定信息。将分析推广到变切割深度的切割，并与实验一致地预测，在所有其他切割条件相同的情况下，切割深度增加时的切削力将小于切割深度减小时的切削力。
A new analysis is presented in which the variable flow stress property of the work material is taken into account. It is shown that changes in the so-called angle of tool-chip interface friction can result from changes in the shear zone mechanism and, for example, the paradoxical behavior observed when cutting with carbon tetrachloride as a “lubricant” can be accounted for in this way. It is concluded that if actual predictions are to be made about the cutting process, i.e., without first making cutting tests, then the angle of tool-chip interface friction cannot be accepted as given information. The analysis is extended to cutting with a variable depth of cut, and in agreement with experiment it is predicted that, with all other cutting conditions the same, the cutting force will be less for an increasing depth of cut than for a decreasing depth of cut.