| 摘要 |
<p>A rotary cutting tool (1) with a longitudinal axis of rotation (A), has a cutting head (3) formed with at least two chip evacuation flutes (14) and at least two body portions therebetween. The body portions bear, at a front face (8) of the cutting head (3), a plurality of cutting inserts mounted so that their operative cutting edges lie substantially in a plane perpendicular to the axis of rotation (A). A first body portion (10a, 10b) bears a first outer cutting insert (5a, 5b) and a second body portion (12a, 12b) bears a second outer cutting insert (6a, 6b). The operative cutting edge (19) of the second outer cutting insert (6a, 6b) is substantially shorter than the operative cutting edge (18) of the first outer cutting insert (5a, 5b), and their outermost ends are substantially equidistant from the axis of rotation and are spaced therefrom at a distance defining a cutting radius (R) of the cutting tool.</p> |
