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US 8,556,546 B2Granted
Cutting insert having cutting edges with recessed portions
AssigneeIscar, Ltd.
InventorsCarol Smilovici, Osama Atar
Life of this patent
Estimating the term…
Abstract
A cutting insert has a cutting edge formed at the intersection of a side surface an end surface. Recesses formed in the side surface interrupt the cutting edge at recessed cutting edge portions. Each recessed cutting edge portion has, in an end view of the cutting insert, a curved central section located between two curved side sections. The central section has a first radius of curvature and each side section has a second radius of curvature, the first radius of curvature being larger than the second radius of curvature.
Claims19
A cutting insert comprising:
- opposing end surfaces and a peripheral side surface extending therebetween, the peripheral side surface comprising a major side surface;
- a major cutting edge formed at the intersection of the major side surface with one of the end surfaces;
- wherein:
- the major side surface has recesses formed therein interrupting the major cutting edge at recessed cutting edge portions, each recessed cutting edge portion being located between two non-recessed cutting edge portions;
- each recessed cutting edge portion comprising, in an end view of the cutting insert, viewing the end surface with the major cutting edge, a curved central section located between two curved side sections, the central section having a first radius of curvature and each side section having a second radius of curvature, the first radius of curvature being larger than the second radius of curvature.
2 more elements
A cutting insert comprising:
- two identical opposing end surfaces, each end surface having four corners including two diagonally opposed lowered corners and two diagonally opposed raised corners, the lowered corners being closer to a median plane of the cutting insert than the raised corners;
- a peripheral side surface extending between the two end surfaces, the peripheral side surface comprising two major side surfaces connected to two minor side surfaces;
- four major cutting edges, each major cutting edge being formed at the intersection of each major side surface with each end surface;
- wherein:
- each major side surface has recesses formed therein interrupting each major cutting edge at recessed cutting edge portions, each recessed cutting edge portion being located between two non-recessed cutting edge portions;
- and
- each recessed cutting edge portion comprising, in an end view of the cutting insert, a curved central section located between two curved side sections, the central section having a first radius of curvature and each side section having a second radius of curvature, the first radius of curvature being larger than the second radius of curvature.
4 more elements
A milling cutter having identical first and second cutting inserts seated therein, wherein each cutting insert comprises:
- two identical opposing end surfaces, each end surface having four corners including two diagonally opposed lowered corners and two diagonally opposed raised corners, the lowered corners being closer to a median plane of the cutting insert than the raised corners;
- a peripheral side surface extending between the two end surfaces, the peripheral side surface comprising two major side surfaces connected to two minor side surfaces;
- four major cutting edges, each major cutting edge being formed at the intersection of each major side surface with each end surface;
- wherein:
- each major side surface has recesses formed therein interrupting each major cutting edge at recessed cutting edge portions, each recessed cutting edge portion being located between two non-recessed cutting edge portions;
- and
- each recessed cutting edge portion comprising, in an end view of the cutting insert, a curved central section located between two curved side sections, the central section having a first radius of curvature and each side section having a second radius of curvature, the first radius of curvature being larger than the second radius of curvature.
4 more elements
Dependencies are inferred from the claim text.