METHOD OF LASER PROCESSING OF A METALLIC MATERIAL WITH HIGH DYNAMIC CONTROL OF THE MOVEMENT AXES OF THE LASER BEAM ALONG A PREDETERMINED PROCESSING PATH, AS WELL AS A MACHINE AND A COMPUTER PROGRAM FOR THE IMPLEMENTATION OF SAID METHOD.

摘要

A method of laser processing of a metallic material is described by means of a focused laser beam having a predetermined transverse power distribution on at least one working plane of the material, comprising the steps of: providing a laser beam emitting source; leading the laser beam along a beam transport optical path to a working head arranged in proximity to the material; collimating the laser beam along an optical axis of propagation incident on the material; focusing the collimated laser beam in an area of a working plane of the material; and conducting the focused laser beam along a working path on the metallic material comprising a succession of working areas, wherein the laser beam is shaped: by reflecting the collimated beam by means of a deformable controlled surface reflecting element having a plurality of independently movable reflection areas, and by controlling the arrangement of the reflection areas to establish a predetermined transverse power distribution of the beam on at least one working plane of the metallic material as a function of the area of the current working plane and/or of the current direction of the working path on the metallic material.