| 摘要 |
<p>The method concerns checking and positioning of a beam (3), according to which the path to be followed by the beam is specified, or is given by a first sensor (7) in front of the beam, while the action of the beam is checked by a second sensor (9) behind the beam. The specified position or the data from the first sensor is compared with the data from the second sensor, with the velocity-dependent relative beam and workpiece shift taken into account. A correction is made in cases where the actual position of the beam deviates from the required position. Also claimed is an apparatus for implementation of the method.</p> |
