Indexable inserts with polycrystalline cutting edge

Details Indexable inserts with polycrystalline cutting edge Indexable inserts with polycrystalline cutting edge

1993-09-20

1995-04-11

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of inorganic material

428689, 428699, 407114, 407115, 407116, 407119, B32B 1800

Patent

active

054057116

ABSTRACT:
An indexable cutting insert having a polycrystalline cutting edge along the entire periphery of the insert, comprising a top surface, a bottom surface and a side wall extending unbroken therebetween to form a body, said body comprised of a composite wafer of cemented carbide, polycrystalline material and cemented carbide material, a cutting edge formed of polycrystalline material, and a chip breaker rearward of the cutting edge, said chip breaker formed by removal of a portion of cemented carbide from the at least one of the top or bottom surface of the insert at the junction of the sidewall and the top or bottom surface.

REFERENCES:
patent: 4498549 (1985-02-01), Jurgens
patent: 4605343 (1986-08-01), Hibbs, Jr.
patent: 4854784 (1989-08-01), Murray
patent: 4899922 (1990-02-01), Slutz et al.
patent: 5082401 (1992-01-01), Niebauer
patent: 5193948 (1993-03-01), Noggle

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