Electric heating – Metal heating – Cutting or disintegrating
Patent
1979-07-25
1982-03-23
Shaw, C. C.
Electric heating
Metal heating
Cutting or disintegrating
219 69W, 219 69V, B23P 112
Patent
active
043214509
ABSTRACT:
A method and apparatus of electrically machining a conductive workpiece in which a travelling-wire electrode and the workpiece are relatively displaced transversely to the axis of the travelling-wire electrode and define a machining gap therebetween, a machining liquid is supplied to said gap, and a series of electrical pulses are applied across the workpiece and the electrode to generate machining discharges in the gap to remove material from the workpiece. The improvement comprises imparting a vibration to the travelling wire electrode at a frequency between 1 and 50 KHZ and an amplitude between 1 and 50 microns so that the travelling wire electrode has an undulating oscillatory motion along its axis with more than two nodes and antinodes or loops and with a maximum amplitude smaller than the size of the machining gap.
REFERENCES:
patent: 2794110 (1957-05-01), Griffith
patent: 3830996 (1974-08-01), Ullmann et al.
patent: 3936653 (1976-02-01), Bals
patent: 4205213 (1980-05-01), Inoue
Inoue-Japax Research Incorporated
Ross Karl F.
Shaw C. C.
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