LIQUID-QUALITY ADJUSTING APPARATUS, LIQUID-QUALITY ADJUSTING METHOD, AND WIRE ELECTRIC DISCHARGE MACHINING APPARATUS

• Main Authors: KAWARAI HISAKATSU, YUZAWA TAKASHI, OHATA TAMAYO, SATO TATSUSHI, KURIKI HIRONORI, TANIMURA JYUNJI
• Format: Patent
• Language: English
• Published: 11.10.2012
• Subjects: CHEMISTRY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL

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.