Metal deforming – By use of non-deforming work-gripping clamp and relatively... – With cutting
Patent
1992-10-19
1993-11-09
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
With cutting
72319, 72420, 72461, 72 31, B21D 504, B21D 2804
Patent
active
052592308
ABSTRACT:
A plurality of notches are formed in one or both ends of long pieces of sheet metal by means of a notched template and a notching tool. The notches establish the break lines on the pieces. The side edge of a sheet metal bending brake is provided with an attachment having a pointed notch receiving and locating edge intersecting the bending axis of the brake which automatically positions the stock for bending. After a bend is made on a break line, the stock is repositioned and another notch used to self-align the stock on another break line. By turning the stock over, notches in the other end can be used to position and locate a break line to perform breaks in an opposite bending direction. Labor cost is greatly reduced, waste due to improper positioning is reduced, and more accurate reproducible bends produce greater uniformity in the finished pieces.
REFERENCES:
patent: 3094159 (1963-06-01), Walsh
patent: 3914974 (1975-10-01), DeVore
patent: 4175737 (1979-11-01), Foss
patent: 4365500 (1982-12-01), Klukow
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