Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1978-07-13
1979-10-16
Gilden, Leon
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72335, 72370, 72482, B21D 2200
Patent
active
041708903
ABSTRACT:
A punch and die assembly for use in the production of heat exchanger fins comprising: a fixed lower tool holder including an ironing punch having the same dimension as a predetermined flanged aperture, and a movable upper tool holder having a die matching said ironing punch, wherein said punch is allowed to displace horizontally and can always be held concentrically to the die without requiring any particular adjustment and whereby uniform products can be continuously obtained.
REFERENCES:
patent: 2367121 (1945-01-01), Hill
patent: 3012664 (1961-12-01), Singleton
patent: 3412593 (1968-11-01), Price
patent: 4084422 (1978-04-01), Zilges
patent: 4098108 (1978-07-01), Kojima
Gilden Leon
Hidaka Engineering Company, Limited
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