Tube expanding and flaring tool

Details Tube expanding and flaring tool Tube expanding and flaring tool

1986-05-13

1988-01-05

Larson, Lowell A.

Metal deforming

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

Tool orbiting or rotating about an axis

72126, B21D 3912

Patent

active

047167521

ABSTRACT:
A tube expanding and flaring tool comprising a rotatable cage which has a nose guide, size to be received in a tube end that is to be expanded and flared. The cage has a tail shaft by which the cage is to be rotated. There is at least one roller carried by the cage which extends partially through the cage for rolling engagement with the interior surface of the tube. There is a nose surface on the roller with a portion thereof tapering from a first diameter to a second relatively larger diameter. Also there is a truncated conical tail surface on the roller expanding at a predetermined angle form the second diameter to a third relatively large diameter. Further there is means for supporting the at least one roller in rolling engagement with the interior surface of the tube end with sufficient force to expand the tube to a diameter relatively larger than its original diameter and to flare the tube end at the predetermined angle of the truncated conical tail surface of the roller.

REFERENCES:
patent: 1046457 (1912-12-01), Glllmor
patent: 1063258 (1913-06-01), Haysom
patent: 1322921 (1919-11-01), Maupin
patent: 1323036 (1919-11-01), Faessler

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