Indexable cutting insert with a triangular shape
AssigneeKennametal Inc.
InventorsJeffrey Francis Kovac, Jeremy Joseph Verellen, Konrad Spitzenberger
Life of this patent
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Abstract
An indexable cutting insert having a triangular shape includes three sides and three cutting corners. A first planar surface and a second, parallel planar surface connects the three sides. In one embodiment, three major cutting edges are formed at an intersection between a respective side and the first planar surface. In another embodiment, six major cutting edges are formed at an intersection between a respective side and the planar surfaces. In another embodiment, six major right-handed cutting edges and six major left-handed cutting edges are formed at an intersection between the sides and the first and second planar surfaces.
Claims20
An indexable cutting insert having a triangular shape, comprising:
- three sides and three cutting corners at intersections of the sides, the three cutting corners formed with a nose radius;
- a first planar surface connecting the three sides and a second planar surface parallel to the first surface and also connecting the three sides, one of the first and second planar surfaces acting as a seating surface when the cutting insert is mounted in an insert seat of a milling body;
- a mounting hole located centrally in the cutting insert, the mounting hole penetrating both the first and second planar surfaces and having a central axis;
- and
- three major cutting edges formed at an intersection between a respective side and the first planar surface and extending an entire length, L, of the respective side.
An indexable cutting insert having a triangular shape, comprising:
- three sides and six cutting corners at intersections of the sides, each cutting corner formed with a chamfer;
- a first planar surface connecting the three sides and a second planar surface parallel to the first surface and also connecting the three sides, wherein both of the first and second planar surfaces act as a seating surface when the cutting insert is mounted in an insert seat of a milling body;
- a mounting hole located centrally in the cutting insert, the mounting hole penetrating both the first and second planar surfaces and having a central axis;
- and
- six major right-handed cutting edges and six major left-handed cutting edges formed at an intersection between a respective side and the first and second planar surfaces, wherein each of the major right-handed cutting edges and each of the major left-handed cutting edges extend from a respective cutting corner toward another cutting corner for approximately one-half the length, L, of the respective side.
Dependencies are inferred from the claim text.