Slitting shears

Details Slitting shears Slitting shears

1988-04-22

1990-05-08

Phan, Hien H.

Cutting

Rotatable disc tool pair or tool and carrier

Tool pair comprises rotatable tools

83481, 83664, 83698, B23D 1906

Patent

active

049227793

ABSTRACT:
Slitting shears for sheets and strips of metal. The shears include knife rollers which support circular knives and are adjustable for adjusting the overlap of the knives. The gaps between the knives are adjustable by means of spacer sleeves arranged on the rolls between the circular knives. The slitting shears further include a bending control unit for the knife rollers for keeping constant the adjusted knife overlap and knife gaps. The bending control unit makes it possible to prevent positional changes of the cutting edges of the circular knives under load, so that cut edges without burrs can always be produced independently of the cutting forces. Bending of the knife rollers can be compensated in a controlled manner by sensing the bending of a knife roller.

REFERENCES:
patent: 2706524 (1955-04-01), Hall
patent: 3545326 (1970-12-01), Madachy
patent: 3863537 (1975-02-01), Huelsman
patent: 4061063 (1977-12-01), Brush
patent: 4756219 (1988-07-01), Pohl et al.

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