Pipe-bending die and method

Details Pipe-bending die and method Pipe-bending die and method

1980-10-14

1982-12-07

Crosby, Gene

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72292, B21D 700

Patent

active

043620442

ABSTRACT:
The invention contemplates a pipe-bending technique wherein an arcuate die which determines the course of bending the central axis of the pipe relies solely upon two tangentially engaging developing lines of contact which are spaced equally, at opposite offsets from the radial plane in which the pipe axis is bent. For the case of pipe bending to a circular arc, the opposed die faces are generally conical, and there is no pipe contact with the die in the range between the spaced developing lines of tangential contact.

REFERENCES:
patent: 2771116 (1965-11-01), Ballard
patent: 3456468 (1969-07-01), Crippen
patent: 3943747 (1976-03-01), Wesler
patent: 4269056 (1981-05-01), Kozinski

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