| 摘要 |
The invention provides an end mill having an improved chip discharging performance and capable of carrying out excellent cutting machining. The end mill includes an end cutting edge (2) provided on a front end of a tool body (1) which rotates around a central axis, a peripheral cutting edge (4) provided on an outer periphery of the tool body (1), a rake surface of the end cutting edge (2) and the peripheral cutting edge (4), and at least one recess (6), which locally breaks the continuity of the end cutting edge (2) is provided, wherein a wall section (8) which extends toward the rear of the outer peripheral side is provided at least in that area of the rake surface (3) which is closer to the outer peripheral side than the recess (6). |
