Cutting by use of rotating axially moving tool – With means to apply transient – fluent medium to work or product – Including tool with duct
Patent
1998-10-01
1999-10-26
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With means to apply transient, fluent medium to work or product
Including tool with duct
408144, 408227, 408226, 408705, B23B 5102
Patent
active
059716746
ABSTRACT:
The drill bit according to the present invention provides an advanced, carbide tipped, coolant feed, two-fluted deep hole drill capable of drilling a wider variety of materials deeper and faster than presently known drills of similar construction. Specifically, a deep hole drill bit includes a cutting tip with a fitting end having "V" shaped profile with an apex edge extending along a plane which is substantially aligned with the cutting edges of the cutting tip. The drill bit additionally includes a drill shaft having a distal end adapted to be matingly fitted to the fitting end of the cutting tip. This joint structure allows the shaft to naturally push behind the drill tip to provide enhanced strength and support during drilling. In this manner, the contact area between the drill tip and the shaft is maximized, with the contact area being greatest towards the base of the "V", where the compressive forces are also greatest, i.e., along the cutting edges.
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Drill Masters of Vermont
Howell Daniel W.
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