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刀具形状由于加工中的磨损而产生变化,除正常磨损外,还有所谓集中磨损.这种集中磨损,主要是由机床—刀具—工件—机床(MTWM)回路发生的温差电流造成的.粗加工时的温差电流虽是极小的问题,但在精加工时,这种温差电流对表面光洁度和尺寸精度的影响却很大,所以是非常重要的.热电磨损受MTWM 回路产生的温差电压和回路内的电阻所支配。温差电压可由种种参量控制,为了观察油剂的效果,仅以如下条件进行实验。
In addition to normal wear and tear, the shape of the tool changes as a result of wear and tear during machining, which is caused mainly by the temperature difference currents occurring in the MTWM circuit. Although the temperature difference current is a very small problem, it is very important that the temperature difference current has a great effect on the surface finish and the dimensional accuracy during finishing, and the thermoelectric wear and tear caused by the MTWM circuit temperature difference voltage and the circuit Within the resistance at the disposal. Temperature difference voltage can be controlled by various parameters, in order to observe the effect of oil, only the following conditions for experiments.