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US 4,379,959 AGranted
Method of and apparatus for wire-cutting a workpiece by electroerosion
AssigneeInoue-Japax Research Incorporated
InventorKiyoshi Inoue
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AssigneeInoue-Japax Research Incorporated
InventorKiyoshi Inoue
Estimating the term…
An improved method of and arrangement for threading a wire electrode through a workpiece in a wire-cutting electroerosion machine having a continuous wire electrode axially transported from a supply means to a collection means along a predetermined wire guiding path; a pair of machining guide members disposed at opposite sides of the workpiece in the path for spanning the axially running wire electrode straightforwards thereacross through the workpiece and cutting feed means for displacing the workpiece relative to the axially running wire electrode transversely to the axis thereof along a prescribed feed path to form a desired electroerosion cut in the workpiece. The method comprises: forming a straight through-hole in the workpiece at a preselected location thereof representing a start point of the said prescribed feed path; positioning a wire electrode having a straightened broken end continuous from the supply means through the first of the said machining guide members disposed at an inlet side of the workpiece to locate the said broken end ahead of the workpiece; positioning the workpiece to locate the axis of the through-hole in coincidence with the axis of the straightened broken end projecting from the first machining guide member; and advancing the wire electrode with the straightened broken end into and through the through-hole of the workpiece and through the second of the said machining guide members disposed at an outlet side of the workpiece.
In a method of wire-cutting a workpiece by electroerosion wherein a continuous wire electrode is axially transported from a supply means to a collection means along a predetermined wire guiding path to traverse the workpiece linearly between a pair of wire guide members disposed at opposite sides of the workpiece in the path and adapted to position the wire electrode therebetween in a machining relationship with the workpiece;
The improvement defined in claim 3 wherein in step (a) a plurality of such through-holes as mentioned are formed in the workpiece at such preselected locations as mentioned in order to produce a corresponding number of desired cuts therein by electroerosion and wherein step (b) comprises inserting respective ones of a plurality of such detached wire elements as mentioned through the respective ones of said through-holes, step (c) comprises securely holding said detached wire elements on said workpiece while leaving them inserted in their respective through-holes against dropping out and the combination of steps (d) through (h) is carried out repetitively for successive machining operation starting at said through-holes in turn.
In a method of wire-cutting a workpiece by electroerosion wherein a continuous wire electrode is axially transported from a supply means to a collection means along a predetermined wire guiding path to traverse the workpiece linearly between a pair of wire guide members disposed at opposite sides of the workpiece in the path and adapted to position the wire electrode therebetween in a machining relationship with the workpiece;
In a method of wire-cutting a workpiece by electroerosion wherein a continuous wire electrode is axially transported from a supply means to a collection means along a predetermined wire guiding path to traverse the workpiece linearly between a pair of wire guide members disposed at opposite sides of the workpiece in the path and adapted to position the wire electrode therebetween in a machining relationship with the workpiece;
In combination with an apparatus for wire-cutting a workpiece by electroerosion having a continuous wire electrode axially transported from a supply means to a collection means along a predetermined wire guiding path;
In combination with an apparatus for wire-cutting a workpiece by electroerosion having a continuous wire electrode axially transported from a supply means to a collection means along a predetermined wire guiding path;
In combination with an apparatus for wire-cutting a workpiece by electroerosion having a continuous wire electrode axially transported from a supply means to a collection means along a predetermined wire guiding path;
In a method of wire-cutting a workpiece by electroerosion wherein a continuous wire electrode is axially transported from a supply means to a collection means along a predetermined wire guiding path to traverse the workpiece linearly between a pair of wire guide members disposed at opposite sides of the workpiece in the path and adapted to position the wire electrode therebetween in a machining relationship with the workpiece;
In a method of wire-cutting a workpiece by electroerosion wherein a continuous wire electrode is axially transported from a supply means to a collection means along a predetermined wire guiding path to traverse the workpiece linearly between a pair of wire guide members disposed at opposite sides of the workpiece in the path and adapted to position the wire electrode therebetween in a machining relationship with the workpiece;
Dependencies are inferred from the claim text.