WORKING FLUID SUPPLY DEVICE FOR ELECTRICAL DISCHARGE MACHINE
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United States of America Patent
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Issued Date -
Jan 12, 2017
app pub date -
Jun 28, 2016
filing date -
Jul 10, 2015
priority date (Note) -
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Abstract
A working fluid supply device for an electrical discharge machine is provided with a first liquid circuit configured to supply clean water (working fluid) drawn up from a clean water tank to a machining tank and a second liquid circuit configured to supply the working fluid to an ion-exchange resin and a cooler. The controller is configured to open or close a first valve provided in the first liquid circuit and a second valve provided in that part of the second liquid circuit through which the working fluid is supplied to the ion-exchange resin, thereby switching the supply of the working fluid to the first and second liquid circuits.
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