Method and tools for forming sheet metal

Details Method and tools for forming sheet metal Method and tools for forming sheet metal

1991-04-01

1992-06-30

Larson, Lowell A.

Metal deforming

Process

Deforming sheet metal

52244, B21D 5380

Patent

active

051252589

ABSTRACT:
The present invention concerns a method and tools for forming sheet metal, and in particular, a method for making a chase top from a stock rectangular piece of sheet metal. Creasing tools are described that each have a handle member and a creasing wheel suspended therefrom cooperates with a support lip to form first and second crease lines and first and second flange areas along each perimeter edge of the workpiece. A reinforcing ridge tool is shown having a handle member with a wheel rotatively suspended therefrom is used to indent the sheet metal along desired lines inwardly of the crease lines to form reinforing ridges. A bending tool is described having cooperating bending members for clamping the workpiece along each second crease line for bending the workpiece there along to form vertical wall portions.

REFERENCES:
patent: 957544 (1910-05-01), Canivan
patent: 3168780 (1965-02-01), Breidert
patent: 4970837 (1990-11-01), Fogelstrom

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