Method and apparatus for the bending of workpieces

Details Method and apparatus for the bending of workpieces Method and apparatus for the bending of workpieces

1988-11-09

1991-04-16

Jones, David

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72320, 72322, 72387, 72702, 72 37, 72326, B21D 504

Patent

active

050072641

ABSTRACT:
In a method for the bending of workpieces by swivel bending jaws, the bent-off part is to assume a predetermined bending angle with respect to the workpiece, for this purpose, in a first bending operation, at least one corresponding leg is to be bent off from the workpiece by means of the swivel bending jaws. Then, the swivel bending jaws are released from the leg and a springback of the leg or the actual bending angle is determined by direct measurements and compared with a set bending angle. Subsequently, an agreement is established between set bending angle and actual bending angle by a renewed bending operation, by a bending-over.

REFERENCES:
patent: Re31938 (1985-07-01), Klukon
patent: 3352136 (1967-11-01), Clarke
patent: 3440847 (1969-04-01), Giordano
patent: 4446710 (1984-05-01), Sallnert et al.
patent: 4524599 (1985-06-01), Bailey
patent: 4564765 (1986-01-01), Blaich
patent: 4598568 (1986-07-01), Stadler
patent: 4802357 (1989-02-01), Jones

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