FIELD: metalworking.
SUBSTANCE: invention relates to a method for laser processing of a metal material with control of the transversel distribution of the laser beam power in a working plane, an installation for its implementation, and a computer-readable medium for implementing the said method by the said installation. The method comprises such steps as providing a laser beam radiation source; bringing the laser beam along the optical path of the beam transportation to the working head located near the material; collimation of a laser beam along the optical axis of propagation incident on a material; focusing a collimated laser beam in the area of the working plane of the material; conducting said focused laser beam along a working trajectory on a metal material containing a sequence of working areas in which the laser beam is formed. Reflection of a collimated beam is carried out using a reflective element with a deformable controllable surface, which has multiple independently movable reflection regions. The location of the reflection regions is controlled to establish a predetermined transverse distribution of the beam power on at least one working plane of the metal material, depending on the area of the current working plane and / or the current direction of the working trajectory on the metal material. A shielding gas flow is supplied in the direction of the said region of the working plane of the metal material along the axis of the shielding gas flow. The axes of the shielding gas flow are displaced relative to the predetermined working trajectory on the metal material. Detection of the current position and /or direction of the current shift of the shielding gas flow axis is performed. Automatic control of the transverse distribution of the laser beam power is carried out depending on the detected current position and /or the detected current direction of the shift of the axis of the shielding gas flow by controlling the location of the mentioned reflection regions to establish the specified transverse distribution of the beam power in the area of the working plane on the metal material located at a set distance from the axis of the shielding gas flow and within the area of the said flow.
EFFECT: during the processing it is possible to maintain or increase the force of the laser beam, for example, when cutting on the front surface, to increase the displacement force of the material itself that results in a decrease in the shielding gas consumption.
20 cl, 18 dwg
