| 摘要 |
<p>An undercutting drill for obtaining a drill hole (5) with conical undercut (4) has a drill shaft (6) connected in an articulated manner through a housing (8) containing a universal joint to a clamping shank (14), the face of the housing (8) facing the drill shaft (6) being provided with a plate (39) having a stopping face (40), the vertical centre-line of which is tilted in relation to the longitudinal axis of the drill shaft (6).</p> |
