ELECTRIC DISCHARGE MACHINE

PURPOSE:To improve the working accuracy by keeping the temperature of a workpiece at a constant value by detecting the temperature of the workpiece and setting the cooling efficiency of a working liquid cooling means, in proportion to said detected temperature, and by cooling the working liquid. CON...

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Bibliographische Detailangaben
1. Verfasser: OSATO TOSHIKAZU
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To improve the working accuracy by keeping the temperature of a workpiece at a constant value by detecting the temperature of the workpiece and setting the cooling efficiency of a working liquid cooling means, in proportion to said detected temperature, and by cooling the working liquid. CONSTITUTION:The temperature rise of a workpiece 1 due to the electric discharge between a working electrode 36 is detected by a thermocouple 61 in a working tank 3, and inputted into an NC device 7a, and the corresponding data is read out from a control data memory means 63 through an A/D converter 62, and the cooling efficiency of a working liquid cooling means 60a is set on the basis of the data. Therefore, the temperature of the workpiece 1 is controlled so as to become a desired certain temperature by cooling the working liquid 4. Thus, the working accuracy can be improved.