| 摘要 |
<p>The invention relates to a rotatable cutting tool including a rotatable basic body (1) and a cutting insert (2), which is mountable in a seat (3), formed in the basic body, which seat has a bottom surface (4) for a bottom side (9) of the cutting insert and a radial support (5) against which a side surface (10) of the cutting insert in pressable in order to fix the cutting insert in respect of radial and/or tangential forces. Fixing of the cutting insert in respect of axial forces is guaranteed by a screw (12), insertable into a through hole (13) in the cutting insert, which screw has a head (15), countersinkable in the cutting insert, and a shaft (16) that includes on one hand a lower male thread (17) for engagement with a female thread in a lower part of a second hole (14) formed in the basic body, that opens in a port (25) in the bottom surface (4) of the seat, and on the other hand an upper cylindrical portion (28) that is locatable in an upper bore which extends between the female thread and the port of the second hole. According to the invention, the upper bore in said second hole (14) is formed having an elongate shape in order to permit deflection of the upper portion of the screw (12) in the direction towards the radial support (5).</p> |
