Electric heating – Metal heating – Cutting or disintegrating
Patent
1980-08-04
1982-06-01
Shaw, C. C.
Electric heating
Metal heating
Cutting or disintegrating
219 69M, B23P 102
Patent
active
043330002
ABSTRACT:
An apparatus for making a hollow extrusion die set consisting of male and female die member with their respective shaped male and female bearing surfaces spaced apart and in a predetermined mating relationship from solid male and hollow female die blanks (6,11), respectively, is provided comprising: a wire-cut EDM electrode head assembly (1) having a plurality of wire guide members (1c, 1d) for spanning and axially transporting a continuous wire electrode (3) in a fixed U form path including a predetermined stretch (3a) of the axially transported wire electrode (3) constituting an axially moving EDM wire-cutting edge for the male and female die blanks (6, 11); a first jig member (5) for securely and interchangeably mounting the male and female die blanks (6, 11) in a predetermined and fixed relative position thereon; a worktable (4) for securely mounting the first jig member (5) thereon and being displaceable relative to the wire-cut EDM electrode head assembly (1); and a second jig member (7) for securely mounting on the male die blank (6) when the latter is securely mounted on the first jig member (5) in the predetermined position for providing a reference surface to be engaged by the predetermined stretch (3a) of the axially transported wire electrode for machining the male and female die blanks in the fixed relative position.
REFERENCES:
patent: 2927190 (1960-03-01), Dulebohn et al.
Japax Inc.
Ross Karl F.
Shaw C. C.
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