Method and apparatus for honing an elongate rotary tool
AssigneeKennametal Inc.
InventorWilliam R. Shaffer
Life of this patent
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Abstract
A method of, and apparatus for, treating an elongate rotary tool that presents a sharp cutting edge are described. The method includes the steps of emitting under pressure from a nozzle an abrasive fluid stream comprising an abrasive grit entrained in a fluid; and impinging the abrasive fluid stream against the sharp cutting edge of the elongate rotary tool for a preselected time so as to transform the sharp cutting edge into a relatively uniformly honed edge. The apparatus includes a rotatable fixture that releasably holds the elongate rotary tool. A nozzle that emits under pressure an abrasive steam. The nozzle and the elongate rotary tool are relatively moveable so that the abrasive stream impinges the entire length of the sharp cutting edge.
Claims21
A method of treating at least one elongate rotary tool that has at least one nose portion that presents at least one sharp cutting edge and an elongate portion that presents at least one other sharp cutting edge, the method comprising the steps of:
- emitting under pressure from a nozzle assembly an abrasive fluid stream comprising at least one abrasive entrained in at least one liquid;
- and
- impinging the abrasive fluid stream against the sharp cutting edges of the elongate rotary tool for a preselected time so as to transform the sharp cutting edges into relatively uniformly honed edges.
An apparatus for treating at least one elongate rotary tool that has a nose portion that presents at least one sharp cutting edge and an elongate portion that presents at least one other sharp cutting edge, the apparatus comprising:
- at least one fixture releasably holding the at least one elongate rotary tool;
- at least one nozzle assembly being in communication with at least one source of an abrasive slurry comprising at least one abrasive entrained in a liquid so as to be able to emit under pressure an abrasive stream;
- and
- the at least one nozzle assembly and the at least one elongate rotary tool being moveable relative to each other so that during the emission of the abrasive stream the abrasive stream impinges the entire length of the sharp cutting edges so as to transform the sharp cutting edges into relatively uniformly honed cutting edges.
Dependencies are inferred from the claim text.