METHOD FOR THE AUTOMATED BEAM POSITIONING OF A LASER BEAM IN RELATION TO A NOZZLE OF A LASER PROCESSING HEAD, AND LASER PROCESSING SYSTEM FOR PROCESSING A WORKPIECE USING A LASER BEAM

摘要

The invention relates to a method for the automated beam positioning of a laser beam in relation to a nozzle of s laser processing head, wherein the method comprises the following automated steps: directing an adjusting laser beam, oriented coaxially to the laser beam, onto an outlet opening of the nozzle mounted on the laser processing head; and determining whether the adjusting laser beam passes through the outlet opening; and if the adjusting laser beam passes through the outlet opening, receiving a two-dimensional image of the outlet opening and the adjusting laser beam passing through the outlet opening, as well as of a nozzle mouth surrounding the outlet opening; determining a position of the adjusting laser beam and a position of the outlet opening of the nozzle based on the captured image; determining whether a deviation of the determined position of the adjusting laser beam from a predefined position of the adjusting laser beam is greater than a predefined maximum deviation; if the deviation is greater than the predefined maximum deviation, adjusting the relative position of the adjusting laser beam and the outlet opening; and repeating the steps of receiving a two-dimensional image, determining the position of the adjusting laser beam and the outlet opening, determining the deviation and adjusting the relative position, until the deviation of the determined position of the adjusting laser beam from the predefined position of the adjusting laser beam is less than or equal to the predefined maximum deviation. The invention relates to a laser processing system for processing a workpiece using a laser beam.