Cutting tool and method for its manufacture
AssigneeKennametal Inc.
InventorsMichael Hacker, Marcus Paul, Karl Wendt
Life of this patent
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Abstract
A cutting tool (2) is specified with a cutting region (4) that comprises a substrate (12) onto which a coating (10) is applied, which coating (10) is subsequently processed, whereby a sharp cutting edge (8) is formed. Furthermore, a corresponding method for the manufacture of the cutting tool (2) is specified. By means of the sharpening of the cutting edge (8) after the coating rather than before, a particularly sharp cutting edge (8) is formed, whereby the precision of the cutting tool (2) as well as its service life is improved.
Claims17
A cutting tool comprising:
- a cutting region comprising:
- a substrate defining at least two surfaces which come together to form an edge;
- and
- a coating applied to the substrate which covers at least a portion of each of the at least two surfaces and the edge of the substrate,
- wherein the coating is processed to provide a sharp cutting edge on the coating,
- wherein the edge of the substrate has an edge radius that is covered by the coating for the formation of the cutting edge on the coating, and
- wherein the cutting edge has a cutting edge radius that is smaller than the edge radius.
A method of manufacturing a cutting tool comprising:
- providing a substrate having a cutting region;
- applying a coating to the cutting region of the substrate;
- and
- subsequently processing the coating by sharpening to provide a sharp cutting edge on the coating,
- wherein the substrate has an edge in the cutting region formed by two adjoining surfaces of the substrate, the method further comprising:
- rounding the edge of the substrate prior to applying the coating to the substrate.
Dependencies are inferred from the claim text.