Tool for cold forging tubular members

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

B - Operations, Transporting

21

D

78/26, 29/42

B21D 26/02 (2006.01) B21D 39/20 (2006.01) F16L 13/14 (2006.01)

Patent

CA 1298996

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 shoulder means on its exterior at both ends and support means connecting into one end, a resilient sleeve surrounding said central body, a passage through the central body to communicate between a pressure supply means connected to the end of the body and the interior of said resilient sleeve, a support ring surrounding each end of said resilient sleeve and a segmented ring positioned between the central expansion portion of said resilient sleeve and each of said support rings with resilient means retaining said segmented ring in surrounding relationship to the ends of said 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.

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