Tool for cold forging tubular members

Details Tool for cold forging tubular members Tool for cold forging tubular members

1987-10-13

1989-02-21

Larson, Lowell A.

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

29523, B21D 2602, B21D 3920

Patent

active

048054305

ABSTRACT:
An improved cold forging tool to exert radial forces outwardly within a tubular member to forge it into an annular member having a central body with a shoulder on its exterior at both ends and support connecting into one end, a resilient sleeve surrounding the central body, a passage through the central body to communicate between a pressure supply connected to the end of the body and the interior of the resilient sleeve, a support ring surrounding each end of the resilient sleeve and a segmented ring positioned between the central expansion portion of the resilient sleeve and each of the support rings with resilient ring retaining the segmented ring in surrounding relationship to the ends of the resilient sleeve to prevent extrusion of the resilient sleeve during forming of the tubular member. In one form of the tool the resilient packer sleeve is molded on the central body.

REFERENCES:
patent: 3627336 (1971-12-01), Lawson
patent: 4006619 (1977-02-01), Anderson
patent: 4343170 (1982-08-01), Hufton
patent: 4608739 (1986-09-01), Miller
patent: 4724693 (1988-02-01), Tedder

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