Notching machine

Details Notching machine Notching machine

1987-02-03

1988-03-08

Schran, Donald R.

Cutting

Means to drive or to guide tool

Tool pair positionable as a unit

83620, 83693, 83917, 144217, B21D 2802, B23D 1508

Patent

active

047292733

ABSTRACT:
In a notching machine using a blade assembly of upper and lower knives mounted respectively on a vertically moving ram and a machine table and each comprising two individual blades forming with their cutting edges a coinciding vertex angle which may be changed by turning the blades relative to each other around a vertical axis of rotation that extends in parallel with the ram near the noses of the knives, a third blade component is provided at least for the upper knife for forming its nose portion with a unitary cutting edge that complements the cutting edges of the two other blades of the upper knife for confining its vertex angle.

REFERENCES:
patent: 3570356 (1971-03-01), Williams et al.
patent: 3958482 (1976-05-01), Claesson
patent: 3996829 (1976-12-01), Tromponi
patent: 4483227 (1984-11-01), Camisa
patent: 4535665 (1985-08-01), Fazis
patent: 4611519 (1986-09-01), Hagerty

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