| 摘要 |
The invention relates to an arrangement by means of which a tool or the like can be guided to different positions belonging to a first plane (A), the arrangement including a support (2), a first arm (3), a second arm and a tool-attachment (5) adapted to the tool, where one end (3a) of the first arm is pivotally connected to the support via a first pivot axle (6), one end (4a) of the second arm is pivotally connected to the other end (3b) of the first arm via a second pivot axle (7), whereas the other end (4b) of the second arm is pivotally connected to the tool-attachment (5) via a third pivot axle, and in which arrangement endless belts or the like are arranged to pass over guide rollers co-acting with respective pivot axles in a manner such that when the tool-attachment is moved along a line (x-line) projected from the arms towards the plane, the tool-attachment (5) will take one and the same orientation. This arm (3) is pivotally mounted relative to a baseplate (12) via a fourth pivot axle (13), which forms a right angle with the first pivot axle (6), whereas the tool-attachment (5) is arranged to pivot relative to a fifth pivot axle (14), which forms a right angle with the third pivot axle (8), to a corresponding degree in an opposite direction. |
