Method and apparatus for electrodischarge machining

Details Method and apparatus for electrodischarge machining Method and apparatus for electrodischarge machining

2005-01-04

2005-01-04

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

Cutting or disintegrating

C219S069130, C219S069160

Reexamination Certificate

active

06838633

ABSTRACT:
An electric discharge machining apparatus for supplying machining electric power to a gap between an electrode (1) and a workpiece (2). The apparatus includes a gap dimension detection device (8) for detecting a dimension of the gap, a gap average voltage detection device (11) for detecting an average voltage of the gap, a gap dimension correction device (13) for correcting the dimension of the gap, and a gap dimension correction starting device (12) for starting the gap dimension correction device (13) when a first comparison between a detected gap dimension and a predetermined allowable value and a second comparison between a detected gap average voltage and a predetermined reference average voltage are made and the gap dimension detected by the first comparison is larger than the predetermined allowable value and the gap average voltage detected by the second comparison is smaller than the predetermined reference average voltage.

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“Mechanics Of Electric Discharge Machining And Method for Making 100% Use Of The Same,” pp. 45-47, (published by Gijutsu-Hyohron Co., Ltd), no publication date.

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