| 摘要 |
<p>The invention relates to a rotatable tool intended for chip removing machining, in particular a drill, comprising a basic body (1) and a loose top (2), which includes a coupling part (22) that is applicable into a jaw (26) between two torque-transferring drivers (27a, 27b) in the front end of the basic body. A centering pin (24) protruding axially rearward from the coupling part (22) is insertable into a centre hole (29) that mouths in the bottom (28) of the jaw (26). By means of a radial screw (31), the pin (24), and thereby the loose top in its entirety, is turnable so that two male members (32a, 32b) included in the coupling part (22) can be inserted into corresponding seats (39) in the insides of the drivers (27a, 27b), in order to lock the loose top axially. In such a way, the pin does not need to be utilized for the axial locking. In addition, the invention relates to a loose top as such as well as a basic body as such.</p> |
