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近年来,中、精加工低损耗电源,无论国内国外都处于探索阶段。采用“连续脉冲”(《电加工》1978年第5期,1979年第3期)降低电极损耗,是方向之一。从我们所作的一些初步工作,已经证明,将停歇时间缩减到一定程度时,电极损耗将随之减小。又发现,如果仅缩减停歇时间而不考虑改变波形,那末在脉冲宽度小于100微秒时,其停歇时间一定要缩短到这样的程度,即前一脉冲电流的后沿与后一脉冲电流的前沿正相交,且其交点I_0正落在座标轴上或稍微大于零,它的损耗方能下降。当脉冲宽度逐渐缩小时,如
In recent years, medium and finishing low power consumption, both at home and abroad are in the exploratory stage. Using “continuous pulse” (“Electrical Processing” 1978 the fifth period, 1979 the third period) to reduce electrode wear, is one of the directions. From some of our initial work, it has been shown that when the pause time is reduced to a certain extent, the electrode loss will decrease. It was also found that if only the pause time was reduced without regard to changing the waveform, the pause time must be shortened to such an extent that the trailing edge of the previous pulse current and the leading edge of the latter pulse current Are intersecting, and its intersection I_0 is on the axis or slightly larger than zero, its loss can only be reduced. When the pulse width is gradually reduced, such as