| 摘要 |
<p>A rotary cutting end mill (10) comprising a shank section (12) and a flut ed section (14) both extending along the axis of rotation (16); and further comprising a plurality of helical teeth (26) wherein a first helical tooth ( 26) has a first cutting edge (26) with a first undulating geometry; and a se cond helical tooth (26) having a second cutting edge with a second undulatin g geometry, said second geometry being either non-periodic, or periodic but having a different pitch or amplitude, or having a different rake angle patt ern.</p> |
