Method of making a cutting tool
OwnerRobert Fries, Iakovos Sigalasinventors
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Abstract
A method for producing a cutting tool such a twist grill, end mill, or the like. The method provides an unbonded assembly including a cylindrical core having ends and an elongate side surface covered partially or completely by a coherent, unsintered layer including ultra-hard abrasive particles for producing an ultra-hard material. The unbonded assembly is subjected to elevated temperature and pressure conditions at which the ultra-hard abrasive is crystographically stable. The sintered product is then recovered that includes a cylindrical core and a layer of ultra-hard abrasive material bonded to the core, and the sintered product is worked to produce one or more cutting edges in the layer of ultra-hard abrasive material.
Claims7
A method of producing a cutting tool comprising:
- providing an unbonded assembly comprising a cylindrical core having ends and an elongate side surface covered partially or completely by a coherent, unsintered layer, the layer comprising ultra-hard abrasive particles for producing an ultra-hard abrasive material;
- subjecting the unbonded assembly to elevated temperature and pressure conditions at which the ultra-hard abrasive material is crystallographically stable;
- recovering the sintered product which comprises a cylindrical core and an ultra-hard abrasive material bonded to the core;
- and
- working the sintered product to produce one or more cutting edges in the ultra-hard abrasive material wherein the layer comprises components suitable to produce the same material as the core and includes one or more veins of ultra-hard abrasive particles for producing the ultra-hard abrasive material, and one or more cutting edges are produced by removing at least some of the core material from the sintered layer in the sintered product.
Dependencies are inferred from the claim text.