METHOD AND DEVICE FOR DETERMINING THE PROPERTIES OF A WORKPIECE AND FOR ADJUSTING LASER PARAMETERS IN LASER MACHINING, AND CORRESPONDING COMPUTER PROGRAM PRODUCT

摘要

The inventive procedure for determining workpiece properties and/or setting laser parameters during laser processing of a workpiece (4) by means of a laser beam (3) includes the following steps: Measurement of light emission (8) of a plasma produced during laser processing of the workpiece (4) by different values of at least one laser parameter of laser processing;Determine the threshold value for at least one laser parameter from which the plasma (9) is produced,the determination of workpiece characteristics by comparing the specified threshold value with the stored reference threshold values determined during the laser processing of a workpiece with known workpiece characteristics; and/orSet at least one laser parameter for further laser processing of the workpiece (4) to a value based on the specified threshold value.