CONTROL METHOD OF WIRE ELECTRIC DISCHARGE MACHINE AND WIRE ELECTRIC DISCHARGE MACHINE
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United States of America
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Issued Date -
Feb 20, 2025
app pub date -
Dec 27, 2022
filing date -
Dec 27, 2022
priority date (Note) -
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Abstract
Provided is a wire electric discharge machine which processes a workpiece by applying prescribed pulse power between a traveling wire electrode and the workpiece, wherein in the machine: a working liquid is supplied to nozzles, which jet the working liquid in the traveling direction of the wire electrode, by means of supply pumps by adhering, to the workpiece, the nozzles; the supply pumps are controlled through constant pressure control for controlling the pressure of the working liquid supplied to the nozzles to a prescribed constant pressure; the frequency of a current is measured, the current being supplied to the supply pumps, which supply the working liquid to the nozzles, by moving the workpiece to the wire electrode in a traverse direction of the traveling direction of the wire electrode; and the supply pump control is switched from the constant pressure control to a constant flow rate control, for supplying the working liquid of a constant flow rate to the nozzles, when the measured frequency exceeds a threshold frequency.
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