Drill
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United States of America Patent
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Jul 7, 2015
Grant Date -
Jul 19, 2012
app pub date -
Sep 29, 2010
filing date -
Oct 2, 2009
priority date (Note) -
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Abstract
A drill for producing a drilled hole in work pieces has at least one main cutting edge on an end face. At least one secondary cutting edge is provided in the region of a circumferential surface of the drill. At least one circularly ground land circumferentially adjoins the at least one secondary cutting edge. The circularly ground lands extend over a first longitudinal section in the front area of the secondary cutting edge. In a following second longitudinal section, a secondary flank circumferentially adjoins the secondary cutting edge.
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