Method and apparatus for forming sheet metal ducts

Details Method and apparatus for forming sheet metal ducts Method and apparatus for forming sheet metal ducts

1997-05-30

1998-07-07

Jones, David

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72319, B21D 502

Patent

active

057751625

ABSTRACT:
A closed tube forming apparatus including a base having spaced apart first and second support members; an elongated first die having one end supported by the first support member and an opposite end supported by the second support member, the one end being detachable from the first support member so as to permit separating movement therebetween; and an elongated second die supported by the base and extending parallel to the first die. One of the first and second dies has a transverse V-shaped cross section forming a knife edge and the other die defines a longitudinally extending V-shaped groove conforming substantially to the V-shaped cross section. Also included in the apparatus are a drive mechanism for producing relative movement between the first and second dies into forming positions with the knife edge received by the groove and a release mechanism operable to effect the detachment of the one end from the first support member and thereby permit the separating movement therebetween into positions substantially spaced apart.

REFERENCES:
patent: 3214955 (1965-11-01), Voth
patent: 3218839 (1965-11-01), Rosanes
patent: 3996778 (1976-12-01), Sparks
patent: 4391119 (1983-07-01), Schmitz
patent: 4926671 (1990-05-01), Hill
patent: 5303572 (1994-04-01), Knudson

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