Liquid-quality adjusting apparatus, liquid-quality adjusting method, and wire electric discharge machining apparatus
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United States of America Patent
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Jun 16, 2015
Grant Date -
Oct 11, 2012
app pub date -
Dec 18, 2009
filing date -
Dec 18, 2009
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Abstract
The liquid-quality adjusting apparatus of the present invention includes: a water purifying part that deionizes a machining liquid; an anticorrosive part that exchanges ions in the machining liquid with anticorrosive ions; a conductivity measuring part that measures a measured value of conductivity of the machining liquid; a storage part that stores in advance a first reference value and a second reference value which are an upper limit value and a lower limit value of conductivity applicable to machining, respectively, and a third reference value which is between the first reference value and the second reference value; and a control part that performs control on the basis of the reference values stored in the storage part and the measured value of the conductivity of the machining liquid measured by the conductivity measuring part.
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