Drill point for one-shot drilling of sandwich panels and similar
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United States of America Patent
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Dec 6, 2011
Grant Date -
Mar 12, 2009
app pub date -
May 15, 2006
filing date -
May 13, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drill point (1) for drilling sandwich panels (100), composite materials and similar, comprising a shank (2) for coupling into the chuck a tool apt to drive said point (1) in rotation; a drilling member, integral to the shank, comprising a substantially cylindrical working portion (3), and a cutting head (4), located at the end of the working portion (3), having cutting edges (C); wherein onto the surface of the working portion (3) there are obtained helical flutes (5), spirally arranged about a substantially central longitudinal axis (A-A) of the working portion (3), the flutes (5) ending on a top face (4') of the cutting head (4), characterized in that the constructive geometry thereof provides a helix angle (.epsilon.) with respect to the longitudinal axis (A-A), along which there develop the helical flutes (5), substantially comprised in a range of 30.degree. to 35.degree..
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Cited Art Landscape
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