Procedure and apparatus for forming a rectangular collar at the

Details Procedure and apparatus for forming a rectangular collar at the Procedure and apparatus for forming a rectangular collar at the

1994-05-23

1996-03-26

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

Tool orbiting or rotating about an axis

72117, B21D 1902

Patent

active

055010938

ABSTRACT:
A procedure and an apparatus for forming a rectangular collar at the end of a pipe (34) by shaping it includes a forming element (1) which is moved in the axial direction of the pipe towards the pipe and rotated along the interior surface of the pipe end about the longitudinal axis of the pipe. The forming cone (1) is moved in the axial direction of the pipe towards the pipe so that, as it moves towards the pipe, the forming element (1) is automatically turned from an initial position to a final position by the thrust producing the movement, simultaneously forming the pipe end so as to produce a collar substantially rectangular with respect to the direction of the longitudinal axis of the pipe.

REFERENCES:
patent: 1396179 (1921-11-01), Foley
patent: 1775766 (1930-09-01), Holmes
patent: 2840136 (1958-06-01), Bellarts
patent: 3067709 (1962-12-01), Conti et al.
patent: 4905492 (1990-03-01), Lobakk
patent: 5345801 (1994-09-01), Paakkunainen

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