Notching machine
AssigneeLudwig Boschert GmbH & Co. KG
InventorHarald Fazis
Life of this patent
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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.
Claims12
A notching machine having a vertically moving ram which is provided with a projecting head serving as a tool holder for an upper knife of a blade assembly which further comprises a lower knife that is attached to a machine table, the upper and the lower knives being each composed of two individual blades forming with their cutting edges a coinciding vertex angle which may be changed by turning the two blades of each knife relatively to each other around a vertical axis of rotation that extends in parallel with said ram near the noses of said upper and lower knives, comprising:
- a third blade component which at least is provided for said upper knife for forming its nose portion and having a unitary cutting edge that complements the cutting edges of the two other blades of the upper knife for confining its vertex angle;
- said third blade component being mounted interchangeably on said tool holder and being made available with differently sized vertex angles and/or with different contours of said unitary cutting edge.
A blade assembly for use in a notching machine, comprising:
- an upper knife and a lower knife that are respectively intended for being mounted on the vertically moving ram and on the machine table of the notching machine;
- said upper and lower knives each comprising two individual blades which when mounted on the vertically moving ram and on the machine table confine a coinciding vertex angle on a nose portion of each knife;
- and
- a third blade component provided at least for said upper knife for forming its nose portion and having a unitary cutting edge that complements the cutting edges of the two other blades of the upper knife for confining its vertex angle.
Dependencies are inferred from the claim text.