Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1980-07-03
1982-09-28
Larson, Lowell A.
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72359, 72360, B21K 130
Patent
active
043511775
ABSTRACT:
The apparatus includes a die, a punch, and a concentric counterpunch having an annular front extension; the die cavity has a spline-shaft-like extension and the counterpunch extension has a frustroconical tip and/or lateral teeth which mesh with the spline shaft. The counterpunch is spring-mounted upon the punch carrier.
REFERENCES:
patent: 2285575 (1942-06-01), Elbertz
patent: 4008599 (1977-02-01), Dohmann
Knabel Siegfried
Leykamm Herbert
Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft
Larson Lowell A.
Siegemund Ralf H.
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