| 摘要 |
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.
|
