Electric heating – Metal heating – Cutting or disintegrating
Patent
1981-02-05
1987-06-16
Paschall, M. H.
Electric heating
Metal heating
Cutting or disintegrating
219 69M, B23P 108
Patent
active
046737871
ABSTRACT:
An improved method of cutting a workpiece to form a desired contour therein with a continuous wire electrode axially advanced to linearly traverse the workpiece across a cutting zone and also displaced relative to the workpiece transversely to the axis of the wire electrode. The method comprises the steps of (a) electroerosively rough-cutting the workpiece while effecting the transverse relative displacement along a first predetermined path corresponding to the desired contour and defined to generate a rough-cut contour with an overcut .alpha. in the workpiece, and (b) electroerosively finish-cutting the workpiece while effecting the transverse relative displacement along a second predetermined path shifted by a distance n.alpha. uniformly from the first predetermined path where n is a value proportional to the thickness of the workpiece traversed by the wire electrode, thereby generating a finish-cut contour coinciding with the desired contour in the workpiece.
REFERENCES:
patent: 3975608 (1976-08-01), Ullmann et al.
patent: 4104501 (1978-08-01), Wyss
patent: 4229636 (1980-10-01), Izari
patent: 4321450 (1982-03-01), Inoue
Dubno Herbert
Inoue-Japax Research Incorporated
Paschall M. H.
Ross Karl F.
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