| 摘要 |
<p>The invention relates to a drill for metal working comprising a drill body (11) and a drill tip (12) with cutting elements. The drill tip (12) is releasably fastened to the drill body (11) by means of fasteners which are provided on mutual sides of the centerline (CL) of the drill (10). the planar underneath surface (21) of the drill tip is provided with a central, at least partially conical recess which is intended to receive a central extension (22) provided in the mainly planar front surface (16) of the drill body in order to centre the drill tip in relation to the drill body. The extension (22) will engage with the partially conical recess. The invention also relates to a drill tip (12) intended to be secured to the drill body (11).</p> |
