Severing a workpiece by scoring and breaking thereof

Details Severing a workpiece by scoring and breaking thereof Severing a workpiece by scoring and breaking thereof

1992-10-22

1994-09-27

Jones, Eugenia

Severing by tearing or breaking

Methods

With preliminary weakening

225 965, B26F 300

Patent

active

053500989

ABSTRACT:
A workpiece severing apparatus includes rotatable cutting and breaking assemblies that move about a fixedly held workpiece. At the same time a cutting edge of the cutting assembly is moving through the workpiece by cutting the workpiece along its entire periphery, rollers of the breaking assembly are applying a desired force to workpiece portions. Movement of the rollers relative to the workpiece is controlled so that tension is always applied to the workpiece in a way that facilitates cutting. The cutting assembly stops its cutting operation when a predetermined thickness of the workpiece remains. After this occurs, the two assemblies continue to rotate and the breaking assembly eventually causes a severed workpiece portion to be separated from a held workpiece portion.

REFERENCES:
patent: 3138308 (1964-06-01), Oakley
patent: 3268137 (1966-08-01), Martin
patent: 3613489 (1971-10-01), Randich
patent: 3659764 (1972-05-01), Janiszewski
patent: 3739666 (1973-06-01), Wright et al.
patent: 3978747 (1976-09-01), Lyon
patent: 4567795 (1986-02-01), Pool
patent: 4633695 (1987-01-01), Klein

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