| 摘要 |
<p>A cutting portion for rotary cutting machining includes a cutting edge structure which comprises at least one cutting edge which is integral with the cutting portion. The cutting portion includes a fastening structure for mounting of the cutting portion to the holder. The cutting portion includes a gripping structure for a wrench that shall be used for mounting the cutting portion to the holder. The cutting portion includes an intermediate, substantially round, part provided between the first fastening structure and the cutting edge structure. The intermediate part includes at least one friction surface provided with one or more recesses or one or more protrusions intended to cooperate with a wrench. The recess or protrusion has a component extending substantially radially.</p> |
