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US 2009/0022561 A1Published application
Rotary cutting tool
OwnerJohn Richard WINEBRENNERinventor
Life of this patent
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Abstract
A rotary cutting tool especially adapted for cutting composite materials. The geometry of the cutting tool provides cutting forces that are controlled and directed to the inside of the hole being drilled. The cutting tool of one embodiment of the present invention preferably has a through hole or bore extending axially through the cutting tool. The through hole is preferably operatively connectable to a fluid source such as a vacuum or coolant source.
Claims27
A cutting tool adapted for cutting a composite material comprising:
- a tool body having an axial center line and including a shank portion and a cutting portion;
- and
- a primary cutting edge on the cutting portion having a means for directing cutting debris towards the axial center line.
A cutting tool for cutting a material comprising:
- a tool body having an axial center line and including a shank portion and a cutting portion;
- and
- a primary cutting edge on the cutting portion having a positive rake angle in the range of 5° and 50°.
Dependencies are inferred from the claim text.