Device for expanding a tube

Details Device for expanding a tube Device for expanding a tube

1997-11-12

1999-06-01

Hail, III, Joseph J.

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

72 62, B21D 3908

Patent

active

059079657

ABSTRACT:
An apparatus for expanding a tube includes a probe to be introduced into the tube. The probe includes an elastic expansion sleeve that can be acted upon by a pressure medium over at least a portion of its inner surface. The expansion sleeve is provided on its outer periphery with a support ring which is supported on a shoulder of the probe that surrounds the expansion sleeve. The support ring is formed by at least two partial segments that are movable relative to one another. This assures that the support ring can reversibly follow a change in diameter that takes place when the expansion sleeve is expanded, thereby preventing the expansion sleeve from being pinched and caught in a gap located between the tube and the probe.

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