Methods for making cutting tools
OwnerJerome H. Lemelsoninventor
Life of this patent
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Abstract
Improvements are provided in the structures of cutting tools and methods for producing such tools. The tool structures include providing a select portion or portions of a cutting tool, such as one or more portions adjacent a cutting or forming portion or edge or plurality of edges of a tool, of amorphous or non-crystalline metal or metal alloy having strength and wear characteristics which are superior to those of conventional metals and alloys which are crystalline in structure. Such amorphous metal may be formed in situ along the cutting edge portion of a cutting tool or blade by intense radiation beam scanning or may be formed of deposited or otherwise secured amorphous metal strip.
Claims15
A method of forming a cutting tool comprising:
- (a) forming a cutting tool base having a metal portion thereof which is operable to be formed with a cutting edge,
- (b) scanning said portion of said tool base with an intense radiation beam in a manner to remove material from said base and to form a cutting edge along the portion of said base from which said material is removed,
- (c) transferring a portion of the heat of said radiation beam to the material of said cutting tool to melt a select portion of said material adjacent said cutting edge of said tool, and
- (d) rapidly cooling at least a portion of the melted material in a manner to form a layer of non-crystalline metal of high wear resistence adjacent said cutting edge.
Dependencies are inferred from the claim text.