Curling apparatus

Details Curling apparatus Curling apparatus

1991-05-21

1992-11-24

Jones, David

Metal deforming

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

Tool orbiting or rotating about an axis

72125, B21D 1912

Patent

active

051652676

ABSTRACT:
A plurality of rolls are supported and freely shiftable on a rotating supporting shaft. The rolls have a V-groove with a circular arc at the bottom of the groove. The plurality of rolls are arranged on a swivel table so that the rotating supporting shaft corresponds to the radial direction of the swivel table. A component of force acting on the roll in the direction of the supporting shaft is alleviated by a shift of each roll in the direction of the supporting shaft. This is accomplished by rotating the swivel table with the bottom of a metal sheet tapered cylinder pushed down against the V-groove. Thus, curling on the lower end of the cylinder is accomplished without generating a bulge in the neighborhood of the lower end of the cylinder and without preforming.

REFERENCES:
patent: 121512 (1871-12-01), Hamilton
patent: 897175 (1908-08-01), Tassey et al.
patent: 1222679 (1917-04-01), Schneider
patent: 1983407 (1934-12-01), Scholtes
patent: 4747287 (1988-05-01), Azzaline et al.

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