Process and apparatus for forming flanged ends on tubular workpi

Details Process and apparatus for forming flanged ends on tubular workpi Process and apparatus for forming flanged ends on tubular workpi

1987-07-14

1988-10-11

Larson, Lowell A.

Metal deforming

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

Clamp structure constitutes sole initial metal-deforming...

72355, 72392, B21D 4102

Patent

active

047761962

ABSTRACT:
Apparatus for forming a flanged end on a tubular workpiece comprising a die having a throat therethrough connected at one end to an abutment surface of the die extending transversely on each side of the throat, a main frame connected to the die, a sub-frame mounted reciprocably on the frame longitudinally relative to the die, a pair of cheek pieces connected on the sub-frame and movable apart, and a wedge member mounted reciprocably on the sub-frame between the cheek pieces. The sub-frame is driven longitudinally relative to the main frame and the wedge member is driven longitudinally between the cheek pieces, whereby the cheek pieces can be separated by extending the wedge member longitudinally relative to the cheek pieces. The separated cheek pieces are then driven longitudinally towards the abutment surface.

REFERENCES:
patent: 943907 (1909-12-01), Austin
patent: 1119416 (1914-12-01), Elger
patent: 1306982 (1919-06-01), Walsh
patent: 1425426 (1922-08-01), Vogt, Jr.
patent: 1932584 (1933-10-01), Hansen
patent: 2292054 (1942-08-01), Cleveland
patent: 2691906 (1954-10-01), Finch
patent: 3298218 (1967-01-01), Gollwitzer
patent: 3581548 (1971-06-01), Lilygren
patent: 3759203 (1973-09-01), Frankenberg

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