Method of, and a machine for, stretching and bending a profiled

Details Method of, and a machine for, stretching and bending a profiled Method of, and a machine for, stretching and bending a profiled

1992-08-11

1994-10-04

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

72301, B21D 1102

Patent

active

053515170

ABSTRACT:
A method of stretching and bending hollow profiled lengths of material provides for the hollow profiled length to be bent symmetrically from both ends, starting from the ends of the length of material, simultaneously in a Y torsion direction under initial tension. Respective tools for bending the length of material are stationary and the hollow profiled length of material is bent in the torsion direction by means of a movable clamping head about the bending tool. The clamping head is also pivotable in the torsion direction. Alternatively, the hollow profiled length of material can also be bent about a bending template. The hollow profiled length of material is wound onto core tools from its ends and a pressing die acts on the hollow profiled length between the core tools.

REFERENCES:
patent: 3426569 (1969-02-01), Brauer
patent: 3948071 (1976-04-01), Lieberman
patent: 4481803 (1984-11-01), Dieser
patent: 4827753 (1989-05-01), Moroney
Stretch-wrap forming, In: Machinery and Production Engineering, Jun. 7, 1972, S.798-801.

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