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US 9,168,626 B2Granted
Cutting tool sharpener
AssigneeProfessional Tool Manufacturing, LLC
InventorsDaniel T. Dovel, Christopher T. DeLorenzo, Steven J. Miner
Life of this patent
Estimating the term…
Abstract
A tool sharpening assembly suitable for sharpening cutting tools. In accordance with some embodiments, the apparatus has a rotatable abrasive surface, and a tool support structure which contactingly supports a body portion of a tool while a cutting surface of the tool is presented against the abrasive surface during a sharpening operation. A cooling mechanism operates to reduce a temperature of the tool.
Claims20
An apparatus comprising:
- a rotatable abrasive surface affixed for rotation about a central shaft;
- a tool support structure coupled to the abrasive surface and structurally configured to contactingly support a body portion of a tool while a cutting surface of the tool is presented against the abrasive surface during a sharpening operation;
- and
- a cooling mechanism which operates to actively draw heat generated during the sharpening operation through the body portion of the tool and the tool support structure to reduce a temperature of the tool, the cooling mechanism utilizing a cooling fluid which passes adjacent the tool support structure to remove heat from the tool and the tool support structure through conduction, the cooling fluid characterized as ambient air, the tool support structure characterized as a heat sink with a base portion having a tool support surface configured to contactingly support the tool and a plurality of cooling fins which extend from the base portion opposite the tool support surface, the cooling mechanism comprising a rotatable impeller coupled to the central shaft for rotation therewith to direct the ambient air across the cooling fins.
1 more element
An apparatus comprising:
- a rotatable disc having opposing first and second planar surfaces, the first planar surface supporting a rotatable abrasive surface, the disc affixed to and rotatable about a central shaft;
- a tool support structure coupled to the rotatable disc and configured to contactingly support a body portion of a tool while a cutting surface of the tool is presented against a first radial extent of the abrasive surface during rotation of the disc, the tool support structure characterized as a heat sink with a base portion having a tool support surface configured to contactingly support the body portion of the tool and a plurality of cooling fins which extend from the base portion opposite the tool support surface;
- and
- a rotatable impeller mechanism connected to the central shaft for rotation therewith and disposed at a second radial extent of the abrasive surface to generate a flow of cooling air adjacent the tool as the tool is presented against said outer radial extent of the abrasive surface, the impeller arranged to direct the cooling air across the cooling fins to draw heat from the body portion of the tool and through the base portion and cooling fins of the tool support structure.
1 more element
Dependencies are inferred from the claim text.