Electrochemical machining process and equipment
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United States of America Patent
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-
Sep 1, 1992
Grant Date -
N/A
app pub date -
Apr 25, 1991
filing date -
Apr 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for electrochemical machining a work piece using an electrochemical machining device including a tool electrode opposing the workpiece across a predetermined machining gap and a device for supplying a pulse current to the machining gap via electrolyte provided in the machining gap includes the steps of determining a predetermined pulse current having a predetermined pulse width, selecting a plurality of partial pulse currents each having a predetermined partial pulse period, calculating a plurality of rest periods based on said partial pulse widths and applying the partial pulse currents, each of the partial pulse periods separated by at least one of the rest periods. According to the method of the present invention, the predetermined pulse width is in the range of about 10-50 msec. An electrochemical machining device, which includes a control unit, a tool electrode, a machining tank and circuitry for supplying a predetermined amount of the electrolyte to the machining gap during a dwell time between two sequential pulse currents to remove residual electrolytic products from the machining gap and the tool electrode is also disclosed.
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