Device for machining by electroerosion

Details Device for machining by electroerosion Device for machining by electroerosion

2005-10-25

2005-10-25

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

Cutting or disintegrating

C219S069180

Reexamination Certificate

active

06958460

ABSTRACT:
The device for machining by electroerosion comprises an electrode-tool (EO) and an electrode-workpiece (EP) constituting the opposite poles of a working gap (GA) and an electrical circuit with a double voltage source (UD) connected to a supply network (A) arranged so as to produce erosive discharges between the electrode-tool (EO) and the electrode-workpiece (EP). This double voltage source (UD) comprises a first (U1) and a second (U2) voltage source connected galvanically to each other by their poles. This double source (UD) is connected to the working gap by at least four separate branches (B1to B4) of which at least one comprises a self-induction element (LL, LL). Switching elements (SW1, SW2) permit producing by selective connection of the branches at least two increasing current slopes and at least two decreasing current slopes.

REFERENCES:
patent: 3832510 (1974-08-01), Pfau et al.
patent: 6107593 (2000-08-01), Tsai et al.
patent: 6130510 (2000-10-01), Kurihara et al.
patent: 6140600 (2000-10-01), Kaneko et al.
patent: 6392183 (2002-05-01), Martin et al.
patent: 60-180720 (1985-09-01), None
patent: 01-153220 (1989-06-01), None
patent: 1-153220 (1989-06-01), None
patent: 60-180720 (1995-09-01), None

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