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US 2003/0156912 A1Published application
Metal cutting tools
OwnerHarry Onoinventor
Life of this patent
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Abstract
Metal cutting tools, such as drills or reamers, utilized to produce holes with substantially improved finishes and sizes at faster speed and feed rates having a double cutting action, said tool comprising a reamer having a plurality of cutting flutes with a 45° primary cutting surface and a tapered secondary cutting surface, the primary surface including slots or grooves thereon, and each flute may have a margin on the O.D. of the flute or a relief angle to provide accurate cutting operations.
Claims18
A metal cutting reamer comprising:
- a plurality of flutes with primary cutting edges ground at a 45° angle, and secondary longitudinally extending tapered shaving edges provided with margins.
A metal cutting reamer comprising:
- a plurality of flutes on the cutting end with primary cutting edges ground to a 45° angle and secondary longitudinally extending shaving edges, each edge being provided with a relief angle providing a sharp edge.
Dependencies are inferred from the claim text.