| 摘要 |
A first part (4) fixed to the work head (1) is pivotable around a first articulated axis (A) connected to a second part which in turn is pivotable around a second articulated axis (B) at right-angles to the first articulated axis. A first shaft part (6) is pivotable around a third articulated axis (C) connected to a second shaft part (7) which together with the first shaft part forms a tool shaft (2). The third articulated axis (C) is parallel to and at a distance from the second articulated axis (B) and joints, which are pivotable around the articulated axes, are lockable when the two shaft parts (6, 7) are aligned with each other and freely pivotable. |
