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研究表明,切削过程中的刀具磨损与刀面温度、刀/屑和刀/工界面的接触压力及相对滑动速度等切削过程变量有关,借助于有限元分析法可对这些切削过程变量进行仿真预测。基于“差分”磨损模型,提出了一种对切削过程中刀具轮廓磨损变化的预测方法,以硬质合金刀具切削AISI1045材料为例,介绍了该方法的原理和实施步骤,并对刀具前后刀面磨损的预测结果进行了试验验证,分析了预测结果与试验结果存在误差的原因。
The research shows that the tool wear in the cutting process is related to the cutting process variables such as the tool face temperature, the contact pressure and the relative sliding speed of the knife / chip and the tool / work surface, and these cutting process variables can be simulated and predicted by means of finite element analysis . Based on the “differential” wear model, a method of predicting the change of tool wear during cutting was proposed. Taking the cutting of AISI1045 carbide as an example, the principle and implementation steps of this method were introduced. The prediction results of wear and tear have been verified by experiments, and the reasons for the errors between the prediction results and the test results have been analyzed.