Drill insert geometry having V-notched web
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United States of America Patent
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Jan 17, 2006
Grant Date -
Sep 16, 2004
app pub date -
Feb 2, 2004
filing date -
Mar 27, 2001
priority date (Note) -
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Abstract
The present invention relates to a V-notched web formed on a drill insert of a drill tool assembly. The V-notched web allows greater stability and feed rates, while decreasing the heat generated at the insert tip. The present invention is provided by a drill insert comprising a drill insert body having at least two cutting edges, a web between the two cutting edges, and a web thinning notch formed on either side of the web. Each web thinning notch forms a notch cutting edge having a positive rake angle.
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