Punch and die assembly for use in the production of heat exchang

Details Punch and die assembly for use in the production of heat exchang Punch and die assembly for use in the production of heat exchang

1977-03-07

1978-07-04

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72327, 72335, B21D 5304

Patent

active

040981088

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 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: 3412593 (1968-11-01), Price

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