| 摘要 |
A cutting tool includes a basic body having a insert seat and a rotatable cutting insert mounted on a connecting surface of the seat. The insert includes a chip cutting top side, a bottom side and an outer peripheral side, whereby there is a cutting edge in the area between the top side and the peripheral side. Formed on the connecting surface of the seat is at least one first ring formation, and formed in the bottom surface of the insert is at least one second ring formation having an equal diameter as the first ring formation. At least one of the first and second ring formations comprises a groove. The first and second ring formations are in direct or indirect engagement with each other in order to form a guide between the cutting insert and the basic body that permits rotation of the cutting insert about its own center axis and simultaneously keeps the insert in an exactly defined radial position. |
