Cutting insert having a circular cutting edge with a chip former
AssigneeIscar, Ltd.
InventorJacob Friedmann
Life of this patent
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Abstract
The invention relates to a metal cutting tip having an upper face and a curved relief face, defining between them a substantially circular cutting edge. A chip former is located in the upper face and comprises a plurality of substantially radially directed recesses formed in the upper face. The recesses extend from the land at the cutting edge to a substantially centrally located deflector wall. The recesses are positioned to deflect cut metal into a curved rigidized shape and against the deflector wall to cause breaking thereof.
Claims13
A metal cutting tip having an upper face and a curved relief face defining between them a substantially circular cutting edge;
- a chip former located in said upper face and comprising a plurality of substantially radially directed recesses formed in said upper face and respectively extending from and merging smoothly with, a land surface adjacent to and coextensive with said cutting edge to, and merging smoothly with, a substantially centrally located deflector wall;
- adjacent recesses intersecting at substantially radially directed rectilinear ridges, each ridge merging smoothly at one end thereof with a component rake surface extending smoothly from said land surface and at an opposite end thereof, with said deflector wall, and wherein each of said recesses defines a single curved surface extending from said land surface to said deflector wall.
A metal cutting tip having an upper face and a curved relief face defining between them a substantially circular cutting edge;
- a land surface adjacent to and coextensive with said cutting edge;
- a deflector projection located substantially centrally of said upper face and projecting upwardly thereof to define a circular facing side deflector wall;
- and a chip former located in said upper face and comprising a plurality of substantially radially directed recesses formed in said upper face and respectively extending from and merging smoothly, radially outwardly thereof, with said land surface and merging smoothly, radially inwardly thereof, with said side deflector wall;
- adjacent recesses intersecting at substantially radially directed rectilinear ridges, each ridge merging smoothly at one end thereof with a component rake surface extending smoothly from said land surface and at an opposite end thereof with said deflector wall, and wherein each of said recesses defines a single curved surface extending from said land surface to said deflector wall.
Dependencies are inferred from the claim text.