Electric heating – Metal heating – Cutting or disintegrating
Patent
1989-03-17
1991-02-19
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
B23H 710
Patent
active
049946439
ABSTRACT:
A current pickup assembly for placing electrical current on a moving wire electrode in an electrical discharge machine apparatus and having a normal straight line of travel. The current pickup assembly includes a current pickup having a bore therethrough for receiving the wire electrode. The bore longitudinal axis is at an angle with respect to the normal straight line of wire travel and the moving wire electrode contacts the bore contact wall therein. A pivot means is provided for selectively pivoting the carbide pickup longitudinal axis at an angle with respect to the straight line of wire travel. A rotation means rotates the current pickup about the bore longitudinal axis. In the alternative, the current pickup is supported on a gimball means for selectively pivoting the pickup about two mutually perpendicular and intersecting axes of rotation intersecting at a point. A control shaft connected to the current pickup and engaged with a connecting rod are driven by a drive means through a variable displacement means. Thus, selective angular displacement of the bore longitudinal axis from the normal straight line of wire travel and also rotational movement of the bore longitudinal axis about the normal straight line of wire travel are provided.
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patent: 4803328 (1989-02-01), Obara
Ceriale James M.
French Jule L.
Fricke William R.
Newell Kevin M.
Truty Thomas J.
Evans Geoffrey S.
Fort Wayne Wire Die, Inc.
Pappas George
T-Star Industrial Electronics Corp.
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