Recently, the most important task in electric discharge machining is to increase of the working speed.
The multi-circuit system electric discharge machining is a method of using a number of discharge circuits and corresponding number of electrodes to the circuit in order to get the working speed.
But it is very difficult to control an autmatic feeding device and work of the single through hole.
In this case. these electrodes are insulated electrically from each other and they are mechanically combined into one body so as to be fed by an automatic feeding device.
Then it was revealed that the circuit number effciency is η=0.8 by experimental result.
From this study, expect that the most effectual application of the multi-circuit system is discharge grinding machine
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