process for laser processing of a metallic material with high dynamic control of the axes of the laser beam along a predetermined conveyance path processingas well as machine and computer program for the implementation of such a procedure.

摘要

A method of laser processing of a metallic material (WP) is described by means of a focused laser beam (B) having a predetermined transverse power distribution on at least one working plane of the material (WP), comprising the steps of: providing a laser beam emitting source (10), leading the laser beam (B) along a beam transport optical path to a working head (14) arranged in proximity to the material (WP), collimating the laser beam (B) along an optical axis of propagation incident on the material (WP), focusing the collimated laser beam (B) in an area of a working plane of the material (WP), and conducting said focused laser beam (B) along a working path on the metallic material (WP) comprising a succession of working areas, wherein the laser beam (B) is shaped by reflecting the collimated beam (B) 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 (WP) on at least one working plane of the metallic material (WP) 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 (WP).