Curling punch

Details Curling punch Curling punch

1977-04-11

1978-04-04

Lanham, C.W.

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72413, 72462, 72470, B21D 501

Patent

active

040819876

ABSTRACT:
A power brake punch for curl forming radii of greater than 180.degree. of arc on the edge of sheet metal workpieces.

REFERENCES:
patent: 1535295 (1925-04-01), Connery
patent: 2293184 (1941-08-01), Weissert
patent: 3142174 (1964-07-01), Baker
patent: 3209576 (1965-10-01), Giordano
patent: 3757559 (1973-09-01), Welsh

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