Tool sharpener with web thickness determination capability
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United States of America Patent
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Jul 25, 2006
Issued Date -
N/A
app pub date -
Apr 11, 2005
filing date -
Mar 22, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Method and apparatus for sharpening a tool, such as a drill bit. A tool sharpener includes a tool holder subassembly which retains and presents the tool against a grinding wheel subassembly. A sensor locates a cutting edge of the tool while the tool is retained by the tool holder. A circuit, preferably comprising a programmable processor, determines a web thickness of the tool from the located cutting edge. The cutting edge is preferably located by detecting at least first and second points at different radii along the cutting edge. A cross-feed subassembly preferably moves the sensor into position, and the tool holder subassembly preferably rotates the tool to facilitate detection of each of the at least first and second points. The tool holder subassembly thereafter presents the tool against the grinding wheel subassembly in response to the determined web thickness of the tool.
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