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本文首先阐明了金属切削中热电效应的基本原理。接着,通过试验,按刀具一工件自然热电偶的伏—安特性,定量分析了切削区热电流的大小。然后,采取施加与不施加外加电流,为抑制刀具的磨损进行了一系列试验。由采用高速钢刀具(W18Cr_4V)切削不锈钒钢管的试验可得出如下结论:绝缘法优于普通切削法,而各种方法中又以热电流补偿法效果最佳,施加同向电流法效果次之。最后,通过机床电阻的测量,使我们获得了有关改进机床结构设计,选择机床最佳主轴转数,发展非金属刀具材料与硬质合金涂层刀片等问题一系列新的启示。
This paper first illustrates the basic principle of the thermoelectric effect in metal cutting. Then, through the experiment, according to the volt-ampere characteristic of the natural thermocouple of a workpiece, the magnitude of the thermal current in the cutting zone is quantitatively analyzed. Then, a series of tests were carried out to suppress the wear of the tool by applying and not applying an applied current. From the use of high-speed steel cutting tool (W18Cr_4V) stainless steel tube vanadium test can draw the following conclusions: Insulation method is superior to ordinary cutting method, and in various methods and the best current compensation method, the effect of applying the same direction Second. Finally, the measurement of resistance of the machine tool gives us a series of new enlightenments on the issues of improving the structural design of the machine tool, selecting the optimum spindle speed of the machine tool, developing the non-metallic tool material and the carbide coated blade.