| 摘要 |
<p>A rotary cutting tool (21) includes a generally cylindrical body (23), at least four substantially flat surfaces (25a-25d) that each form an angle with a longitudinal axis (A) of the body (23), and a cutting tip (27) centered on the longitudinal axis (A), the at least four flat surfaces (25a-25b) intersecting with the tip (27). The tip (27) defines at least two, curved cutting edges (29, 31). A method of making a rotary cutting tool is also disclosed.</p> |
