Grooving cutting insert having a circular cutting edge provided with relief recesses
AssigneeIscar, Ltd.
InventorRobi Nudelman
Life of this patent
Estimating the term…
Abstract
A cutting insert for grooving operations includes an elongated clamping portion and a cutting portion. The cutting portion has a chip rake surface and a relief surface meeting at a cutting edge. The relief surface has a plurality of recesses extending to the chip rake surface. In a top view of the cutting insert the cutting edge has the form of a serrated curved cutting edge.
Claims13
A grooving cutting insert (10) having an elongated form with a longitudinal axis (L) and comprising an elongated clamping portion (12) and at least one cutting portion (14),
- the at least one cutting portion (14) having a first width transverse (W1) to the longitudinal axis (L), the clamping portion (12) having a second width (W2) transverse to the longitudinal axis (L), the first width (W1) being greater than the second width (W2),
- the at least one cutting portion (14) having a chip rake surface (22) and a relief surface (24) meeting at an intersection, the relief surface (24) having a plurality of recesses (26) formed therein, the plurality of recesses (26) extending to and opening out to the chip rake surface (22),
- the relief surface (24) and the chip rake surface (22) intersect at a cutting edge (20), wherein in a top view of the cutting insert (10) the cutting edge (20) has the form of a serrated curved cutting edge (20) with recessed and non-recessed cutting edge portions (28, 30).
A grooving cutting insert (10) having an elongated form with a longitudinal axis (L) and comprising an elongated clamping portion (12) and at least one cutting portion (14),
- the at least one cutting portion (14) having a first width transverse (W1) to the longitudinal axis (L), the clamping portion (12) having a second width (W2) transverse to the longitudinal axis (L), the first width (W1) being greater than the second width (W2),
- the at least one cutting portion (14) having a chip rake surface (22) and a relief surface (24) intersecting at a cutting edge (20);
- wherein in a top view of the cutting insert (10):
- the cutting edge (20) has the form of a serrated curved cutting edge (20) with recessed and non-recessed cutting edge portions (28, 30);
- a plurality of the non-recessed cutting edge portions (30) each have a section (30′) laying on an imaginary curve (C);
- and
- the chip rake surface (22) subtends a circumferential angle (β) of not less than 180° along said imaginary curve.
Dependencies are inferred from the claim text.