Patent ID: 6836694
Filing Date: 2004-12-28
Classification: B23K,G09F

Abstract:
A method for guiding a laser beam over an object from a plurality of identical objects which are conveyed step by step and substantially periodically past the laser, and wherein said objects have a varying arrangement relative to the conveying direction, and are struck at coincident locations by the laser beam, the method comprising the following steps:a) arranging a reference object in the image plane of an optical camera; b) recording an image of the reference object by means of the camera and displaying the image on a display device; c) marking a point of a line which is to be struck by the laser beam on the image; d) storing the reference object position data and the mark position data from steps b) and c) in a first memory; e) arranging a further object in the image plane of the camera; f) recording an image of the further object with the camera; g) storing the object position data of the further object from step f) in a second memory; h) calculating the deviation between the reference object position data in the first memory and the object position data of the further object in the second memory; j) calculating the laser position(s) relative to the further object on the basis of the deviation in such a way that the laser strikes the further object at the positions marked in step c); and k) guiding the laser over the further object to the/along the laser position(s) calculated in step j).