Tube beading apparatus

Details Tube beading apparatus Tube beading apparatus

1998-01-16

1999-05-18

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Clamp structure constitutes sole initial metal-deforming...

7237003, 7237006, B21D15/02

Patent

active

059040637

ABSTRACT:
A tube beading apparatus for cold forming an annular external bead on a metal tube, the apparatus having a clamp to secure the tube, a beading die to form the bead and a powered ram to advance the die against the end of the tube. The beading die has a tube receiving channel surrounding a central mandrel which extends past the forward wall of the beading die, with the mandrel sized to fit into the bore of the tube to prevent deformation of the bore and with the tube receiving channel sized equal or smaller than the outer diameter of the tube, so that when the die is forced onto the end of the tube the tube wall is deformed into the annular bead. The shoulder of the clamp aperture holding the tube and the shoulder of the tube receiving channel are rounded to properly form the bead.

REFERENCES:
patent: 378414 (1888-02-01), Burkhardt
patent: 1889775 (1932-12-01), Cornell
patent: 3866457 (1975-02-01), Bagby
patent: 4980961 (1991-01-01), Caudill
patent: 5782128 (1998-07-01), Barjesteh

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