Apparatus for swaging tubular material

Details Apparatus for swaging tubular material Apparatus for swaging tubular material

1975-11-26

1977-07-05

Abercrombie, Willie G.

Metal deforming

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

Tool orbiting or rotating about an axis

72126, B21D 4104

Patent

active

040331636

ABSTRACT:
The method and tool of this invention functions to reduce the ends of tubular material, such as oil or gas well drill pipe, particularly pipe having a flared end. The tool consists of a mandrel sleeve having an inner tapered surface, a series of conical rollers mounted in a roller cage within the mandrel so the rollers bear against the tapered surface. With the pipe inserted between the rollers and with relative rotational and axial movement between the pipe and the mandrel, the rollers will engage the surface of the pipe applying a swaging force to the pipe which is increased by the decreasing diameter caused by axial movement of the pipe and rollers along the tapered surface.

REFERENCES:
patent: B377683 (1975-01-01), Martin
patent: 1665915 (1928-04-01), Ekman
patent: 1921810 (1933-08-01), Duchesne
patent: 2649889 (1953-08-01), Dudley
patent: 3815397 (1974-06-01), Hollencamp

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