| 摘要 |
<p>This welding head (10) comprises two optical assemblies (22, 34) respectively intended for the collimation and for the focusing of a laser beam, and a mirror (40) reflecting the focused laser beam onto a wall (14) to be welded. The focusing assembly (34) can be moved along its optical axis (X-X) and its position is controlled by a feeler finger (52) in contact with the surface (15) of the wall (14) to be welded. When the welding head is moved, in order to produce a weld bead, the position of the focusing assembly (34) is modified as a function of the movements of the feeler finger (52) in order to adapt the radial position of the focal point of the laser beam to the shape variations of the wall to be welded. <IMAGE></p> |
