Method of manufacturing diamond-coated cutting tool inserts and products resulting therefrom
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United States of America Patent
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Dec 29, 1998
Issued Date -
N/A
app pub date -
May 22, 1997
filing date -
Apr 18, 1995
priority date (Note) -
Expired
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Abstract
A method of making a diamond-coated insert includes, obtaining a substrate of durable and diamond adherent material having a substantially smooth surface on which is coated a diamond layer using any known CVD technique, and partitioning the diamond covered substrate with a laser beam into multiple inserts with desired geometries. If desired, the insert edges and corners may be thereafter machined or ablated until the desired smoothness and finish are achieved, and a fastening throughbore may be preformed or drilled in the center of each insert. The diamond-coated inserts as formed have a top surface entirely coated by a surface layer of diamond of a first thickness, and at least one rake face which is not diamond-coated beyond the surface layer of diamond.
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