Cutting insert with chip-control arrangement having recess depths and projection heights which increase with distance from cutting edge
AssigneeIscar, Ltd.
InventorSergey Chistyakov
Life of this patent
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Abstract
A cutting insert has a cutting edge formed at an intersection of a rake surface and a relief surface, with a chip-control arrangement located at the rake surface. The chip-control arrangement includes a plurality of recesses that extend downwardly into the rake surface and a plurality of projections that extend upwardly from the rake surface. The plurality of recesses follow a pattern of increasing depth in a rearward direction from the forward portion of the cutting edge. The plurality of projections follow a pattern of increasing height in a rearward direction from the forward portion of the cutting edge.
Claims36
A cutting insert (20) comprising:
- a cutting portion (24), having a cutting portion axis (A) defining a forward to rearward direction (DF, DR), the cutting portion (24) comprising a cutting edge (26) formed at an intersection of a rake surface (28) and a relief surface (30), the cutting edge (26) having a forward portion (25);
- and
- a chip-control arrangement (22) located at the rake surface (28);
- the chip-control arrangement (22) comprising:
- a plurality of recesses (50, 74) extending downwardly into the rake surface (28);
- and
- a plurality of projections (52, 72) extending upwardly from the rake surface (28);
- wherein
- the plurality of recesses (50, 74) follow a pattern of increasing depth in the rearward direction (DR) from the forward portion of the cutting edge (26);
- and
- the plurality of projections (52, 72) follow a pattern of increasing height in the rearward direction (DR) from the forward portion of the cutting edge (26).
A cutting insert (20) comprising:
- a cutting portion (24), having a cutting portion axis (A) defining a forward to rearward direction (DF, DR), the cutting portion (24) comprising a cutting edge (26) formed at an intersection of a rake surface (28) and a relief surface (30), the cutting edge (26) being bisected by the cutting portion axis (A) in a plan view of the cutting portion (24);
- and
- a chip-control arrangement (22) located at the rake surface (28);
- the chip-control arrangement (22) comprising:
- a plurality of recesses (50, 74) extending downwardly into the rake surface (28);
- and
- a plurality of projections (52, 72) extending upwardly from the rake surface (28);
- wherein
- the plurality of recesses (50, 74) follow a pattern of increasing depth in the rearward direction (DR) from where the cutting edge (26) is bisected;
- and
- the plurality of projections (52, 72) follow a pattern of increasing height in the rearward direction (DR) from where the cutting edge (26) is bisected.
Dependencies are inferred from the claim text.