POWER SUPPLY CIRCUIT FOR ELECTRIC DISCHARGE MACHINE

A power supply circuit for an electric discharge machine characterized in that since an inductance element is shorted by a second switching element at the time of building up a machining current, an increase of the time constant due to the inductance element is not caused, and thereby the build-up o...

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Bibliographic Details
Main Author KANEKO, YUJI
Format Patent
LanguageEnglish
Japanese
Published 13.06.1991
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Summary:A power supply circuit for an electric discharge machine characterized in that since an inductance element is shorted by a second switching element at the time of building up a machining current, an increase of the time constant due to the inductance element is not caused, and thereby the build-up of the current wave shape of the machining current does not become wrong, and in that since the inductance element acts after building up the machining current, the intermission of the machining current is not caused. L'invention se rapporte à un circuit d'alimentation pour machines à décharge électrique, dont le fonctionnement se caractérise en ce que, dès lors qu'un élément d'inductance est mis en court-circuit par un second élément de commutation au moment de l'accumulation d'un courant d'usinage, une augmentation de la constante de temps due à l'élément d'inductance n'est pas causée, ce qui ne fausse pas la formation de la forme d'onde du courant d'usinage, et en ce que, grâce à l'action de l'élément d'inductance après l'accumulation du courant d'usinage, aucune interruption du courant d'usinage n'est causée.
Bibliography:Application Number: WO1990JP01540