Electric heating – Metal heating – Cutting or disintegrating
Patent
1997-04-10
1998-09-15
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
B23H 706
Patent
active
058082638
ABSTRACT:
A method and apparatus for moving guide heads, possibly of a workpiece, of a wire erosion machine along in each case a wire guide path (TD) in which connection, by a cutting wire (1) traveling between the guide heads, a contour is cut into the workpiece (5) and the actual drag error (S) produced by the bulging of the cutting wire (1) is compensated for in the manner that the existing wire guide path (TD) is corrected with reference to a contour to be cut which is represented by at least one contour curve (UK), characterized by the fact that, for the correction of the existing wire guide path (TD), a drag error correction vector (S.sub.B) is calculated, its amount (.vertline.S.sub.B (t).vertline.) being calculated from the instantaneous erosion parameters forming the basis of the erosion and its direction, in particular the angle (.alpha.(x)) between the calculated drag error correction vector (S.sub.B) and the tangent to a point x of the contour curve (UK), being calculated from the instantaneous erosion parameters forming the basis of the erosion and/or from the geometry of the contour to be cut.
REFERENCES:
patent: 4499359 (1985-02-01), Obara
patent: 4520253 (1985-05-01), Gamo et al.
patent: 5057662 (1991-10-01), Beltrami et al.
patent: 5233147 (1993-08-01), Magara
Prof. Dr.-Ing. Dr. h.c. W. Konig et al, Einflu.beta. der auf den Draht wirkenden Krafte Konturgenauigkeit beim funkenerosiven Schneiden, Industrie anzeiger, Nr.104 v 29. 12/ 1982/104.
AGIE SA
Evans Geoffrey S.
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