Abrégé

The present invention relates to a method for classifying a multitude of images recorded by a camera observing a processing area of a workpiece processed by a processing beam, comprising the steps of: recording a first pixel image and a multitude of subsequent pixel images by the camera during a processing operation; detecting mismatches of a position and orientation of a keyhole generated by the processing beam in the workpiece within an image plane of the subsequent pixel images in comparison to the first pixel image; compensating the mismatches of the position and orientation of the respective keyholes in the subsequent pixel images with regard to the first pixel image, to produce a set of pixel images having each a normalized keyhole position and orientation; classifying the set of normalized pixel images into at least two classes by means of a classifier.

Classes IPC  ?

• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G06T 7/00 - Analyse d'image
• B23K 1/005 - Brasage par énergie rayonnante
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet
• B23K 26/20 - Assemblage
• B23K 26/32 - Assemblage tenant compte des propriétés du matériau concerné
• B23K 26/34 - Soudage au laser pour des finalités autres que l’assemblage
• B23K 28/02 - Procédés ou appareils combinés pour le soudage ou le découpage
• G05B 19/408 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le maniement de données ou le format de données, p. ex. lecture, mise en mémoire tampon ou conversion de données
• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques
• G05B 13/02 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques

Abrégé

e and a desired value; and (f) repeating the steps (a) to (e) for further time points to perform a closed-loop controlled processing operation.

Classes IPC  ?

• G05B 13/02 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques
• G06T 7/00 - Analyse d'image
• B23K 1/005 - Brasage par énergie rayonnante
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet
• B23K 26/20 - Assemblage
• B23K 26/34 - Soudage au laser pour des finalités autres que l’assemblage
• B23K 28/02 - Procédés ou appareils combinés pour le soudage ou le découpage
• G05B 19/408 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le maniement de données ou le format de données, p. ex. lecture, mise en mémoire tampon ou conversion de données
• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques
• B23K 26/32 - Assemblage tenant compte des propriétés du matériau concerné

Abrégé

t); and (e) repeating the steps (a) to (d) for further time points to perform a RL controlled processing operation.

Classes IPC  ?

• G05B 13/02 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques
• G06T 7/00 - Analyse d'image
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 1/005 - Brasage par énergie rayonnante
• B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet
• B23K 26/20 - Assemblage
• B23K 26/34 - Soudage au laser pour des finalités autres que l’assemblage
• B23K 28/02 - Procédés ou appareils combinés pour le soudage ou le découpage
• G05B 19/408 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le maniement de données ou le format de données, p. ex. lecture, mise en mémoire tampon ou conversion de données
• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques
• B23K 26/32 - Assemblage tenant compte des propriétés du matériau concerné

Abrégé

A laser processing head for processing a workpiece by means of laser beam, including a housing through which a beam path for the laser beam is led and which has a focusing optical unit for focusing the laser beam onto a joint of the workpiece to be processed. A light cutting device is fitted to the housing and has a light source for generating a light line on the workpiece. A camera is arranged in an observation beam path in front of the camera such that the camera images the light line at the location to be joined and also the portion. The system also includes an image processor which calculates a minimum distance between the stored target trajectory and the current welding path midpoint.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• B23K 26/02 - Mise en place ou surveillance de la pièce à travailler, p. ex. par rapport au point d'impactAlignement, pointage ou focalisation du faisceau laser
• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée

Abrégé

An optical measuring device for monitoring a joint seam, joining head and laser welding head. The optical measuring device monitors a joining region in a workpiece and has at least one light-section device with a first light source for casting a light fan in the direction of the workpiece to be joined, making a triangulation light line within the joining region which intersects a joint seam. An illumination device with a second light source homogeneously illuminates the joining region. A first optical sensor with a first observation beam path for spatially resolved imaging of the triangulation light line is projected onto the joint seam. A second optical sensor with a second observation beam path for spatially resolved imaging of the joint seam is coaxially coupled with the first observation beam path. The readout rate of the first and second optical sensors is >1 kHz and <500 Hz, respectively.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur

Abrégé

The invention relates to a laser machining head (100) for machining a workpiece by means of a working laser beam (108), with a camera (102) with an imaging lens system (116) arranged in front of said camera in the beam path for observing a machining region of the workpiece that is being machined by means of the working laser beam (108), with a focusing lens system (114) for focusing the working laser beam (108) on the workpiece surface (104) or on a position defined in relation to the workpiece surface (104), and with an evaluation unit (122) which is designed to calculate a corrective adjusting displacement (ΔZos, ΔZB) by means of an adjusting displacement (ΔdKL) of the imaging lens system (116) in the direction of the optical axis in order to refocus the camera image when there is a shift in the focal point of the focusing lens system (114), which corrective adjustment displacement compensates a shift in the focal point of the focusing lens system (114) in relation to the workpiece surface (104) or with respect to a position defined in relation to the workpiece surface (104).

Classes IPC  ?

• H04N 5/253 - Signal d'image produit par balayage de films cinématographiques ou de diapositives, p. ex. pour le télécinéma

Abrégé

The present invention relates to a method for closed-loop controlling a processing operation of a workpiece, comprising the steps of: (a) recording a pixel image at an initial time point of an interaction zone by means of a camera, wherein the workpiece is processed using an actuator having an initial actuator value; (b) converting the pixel image into a pixel vector; (c) representing the pixel vector by a sum of predetermined pixel mappings each multiplied by a corresponding feature value; (d) classifying the set of feature values on the basis of learned feature values into at least two classes of a group of classes comprising a first class of a too high actuator value, a second class of a sufficient actuator value and a third class of a too low actuator value at the initial time point; (e) performing a control step for adapting the actuator value by minimizing the error et between a quality indicator ye and a desired value; and (f) repeating the steps (a) to (e) for further time points to perform a closed-loop controlled processing operation.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• G06T 7/00 - Analyse d'image
• G05B 13/00 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé
• G05B 19/408 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le maniement de données ou le format de données, p. ex. lecture, mise en mémoire tampon ou conversion de données

Abrégé

The present invention relates to a method for controlling a processing operation of a workpiece by means of a Reinforcement Learning (RL) agent unit, comprising the steps of: (a) observing an interaction zone in the workpiece by means of at least one radiation sensor to generate at least one sensor signal st, wherein the workpiece is processed using an actuator having an initial actuator value at; (b) determining a basis function Φ(st) from the set of sensor signals st; (c) determining a reward function rt giving the probability of good results of the processing operation; (d) choosing a next actuator value at+1 on the basis of a policy π depending on the reward function rt and the basis function Φ(st); and (e) repeating the steps (a) to (d) for further time points to perform a RL controlled processing operation.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• G06T 7/00 - Analyse d'image
• G05B 13/00 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé
• G05B 19/408 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le maniement de données ou le format de données, p. ex. lecture, mise en mémoire tampon ou conversion de données

Abrégé

The present invention relates to a method for classifying a multitude of images recorded by a camera observing a processing area of a workpiece processed by a processing beam, comprising the steps of: recording a first pixel image and a multitude of subsequent pixel images by the camera during a processing operation; detecting mismatches of a position and orientation of a keyhole generated by the processing beam in the workpiece within an image plane of the subsequent pixel images in comparison to the first pixel image; compensating the mismatches of the position and orientation of the respective keyholes in the subsequent pixel images with regard to the first pixel image, to produce a set of pixel images having each a normalized keyhole position and orientation; classifying the set of normalized pixel images into at least two classes by means of a classifier.

Classes IPC  ?

• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G06T 7/00 - Analyse d'image
• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• G05B 19/408 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le maniement de données ou le format de données, p. ex. lecture, mise en mémoire tampon ou conversion de données

Abrégé

The invention relates to a method for monitoring a laser machining operation to be performed on a workpiece, comprising the following steps: detecting at least two current measured values by at least one sensor, which monitors the laser machining operation, determining at least two current characteristic values from the at least two current measured values, wherein the at least two current characteristic values jointly represent a current fingerprint in a characteristic value space, providing a predetermined point set in the characteristic value space, and classifying the laser machining operation by detecting the position of the current fingerprint relative to the predetermined point set in the characteristic value space, wherein the at least one sensor comprises at least one camera unit, which records camera images with different exposure times and processes them together by using a high dynamic range (HDR) method, in order to provide images having a high contrast ratio as the current measured values.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/02 - Mise en place ou surveillance de la pièce à travailler, p. ex. par rapport au point d'impactAlignement, pointage ou focalisation du faisceau laser
• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée

Abrégé

A method for monitoring a laser machining operation to be performed on a workpiece by detecting at least two current measured valued by at least one sensor which monitors the laser machining operation and determining at least two current characteristic values from the at least two current measured value, wherein the at least two current characteristic values jointly represent a current fingerprint in a characteristic value space and providing a predetermined point set in a characteristic value space, and classifying the laser machining operation by\detecting the position of the current fingerprint relative to the predetermined point set in the characteristic value space.

Classes IPC  ?

• H05B 3/00 - Chauffage par résistance ohmique
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/02 - Mise en place ou surveillance de la pièce à travailler, p. ex. par rapport au point d'impactAlignement, pointage ou focalisation du faisceau laser
• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée

Abrégé

The invention relates to a device (10, 52, 56) for cutting a workpiece (12) by means of a working laser beam (14), comprising a housing (16), through which a path is made for the working laser beam (14) and which has a focusing lens (18) for focusing the working laser beam (14) onto the workpiece (12) to be cut within a working area (48), a lighting device (44) with a light source (46) for the incoherent lighting of the working area (48) of the workpiece (12) to be cut, a camera (32), coupled coaxially into the path of the working laser beam, for observing the working area (48) of the workpiece (12) to be cut, wherein an optical filter, which is substantially opaque to the working laser beam (14), is arranged ahead of the camera (32) in the path of the observation beam (22), and comprising a processing unit (56), which is designed for processing image data from the camera (32), in order to determine the geometry and quality of a slit (50) produced in the workpiece (12) by the working laser beam (14), wherein the optical filter is an optical bandpass filter (36) and the light source (46) of the lighting device (44) is of such a nature that it has an at least local radiating maximum in the wavelength pass band of the bandpass filter (36), in order to make it possible for the camera (32) to record a grey-scale image of the working area (48) in which both reflections by the working laser beam (14) and emissions of the material vapour of the workpiece (12) are minimized.

Classes IPC  ?

• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/38 - Enlèvement de matière par perçage ou découpage

Abrégé

The invention relates to a laser processing head (10) for processing a workpiece (10) by means of laser beam (12), comprising a housing (14), through which a beam path for the laser beam is led and which has a focusing optical unit (18) for focusing the laser beam onto a joint (42) of the workpiece to be processed, a light cutting device (30) fitted to the housing (14) and having a light source (34) for generating a light line (38) on the workpiece (16), which cuts a location to be joined at a predetermined distance (d) from the joint, a camera (24) with an optical bandpass filter (28) arranged in an observation beam path in front of the camera, wherein the light source (34) has an at least local emission maximum in the wavelength passband of the bandpass filter and the optical bandpass filter (28) is configured in such a way that the laser beam (12) is not transmitted, and wherein the camera images the light line at the location to be joined and also the portion - transmitted by the bandpass filter - of the process light of a welding bath (46) produced by the laser beam impinging on the workpiece to be processed at the joint (42) at regular time intervals, and a processing unit (40) with a memory (58) for receiving the recorded image data from the camera, which is designed to determine, by image processing of the received image data, the intersection point (50) of the light line (38) with the location (48) to be joined and also the midpoint of the welding bath (46) at the joint (42) to store the intersection points (50) between light line (38) and location (48) to be joined as a target trajectory (60) in the memory (58), and to determine a minimum distance between the stored target trajectory (60) and the current welding path midpoint.

Classes IPC  ?

• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée

Abrégé

The present invention relates to a method for processing workpieces by means of a cognitive processing head, comprising the steps of performing an initial processing process of the initial workpiece type by acting on learned knowledge; and making an autonomous decision in a previously unknown situation for adapting the learned knowledge to a secondary processing process of a secondary workpiece type.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage

Abrégé

An insert (18) for holding an optical system (90, 92), in particular a focusing optics, in a laser machining head (10) for machining a workpiece with a laser beam. The optical system (90, 92) is displaced in the longitudinal direction of the laser beam relative to the insert (18) via adjusting means. The adjusting means includes a linear adjusting device (64, 66, 68) with a synchronous linear motor (68). The laser machining head (10) has a housing (14) in which the insert (18) can be introduced laterally.

Classes IPC  ?

• G02B 7/02 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour lentilles
• G02B 15/14 - Objectifs optiques avec moyens de faire varier le grossissement par déplacement axial d'au moins une lentille ou de groupes de lentilles relativement au plan de l'image afin de faire varier de façon continue la distance focale équivalente de l'objectif

Abrégé

The invention relates to a laser machining head (14) for machining a work piece by means of a laser beam (12), comprising a housing (16), through which a beam path for the laser beam (12) is conducted and which is provided with focusing optics (18) for focusing the laser beam (12) through a nozzle (20) on the work piece to be machined, an actuator (26), which is connected to the focusing optics (18) in order to adjust the focusing optics (18) in the beam direction and in a plane perpendicular to the beam path, at least one scattered light sensor (28), which is installed in the housing (16) in order to detect scattered light generated by scattering or reflection of the laser beam (12) on parts of the housing (16) or the nozzle (20), and a focal position adjustment unit (32), which is connected to the at least one scattered light sensor (28) in order to receive a scattered light intensity signal. The focal position adjustment unit (32) is designed to control the actuator (26) for the focusing optics (18) such that the scattered light intensity received from the at least one scattered light sensor (28) is minimal.

Classes IPC  ?

• B23K 26/42 - Traitement préliminaire; Opérations ou appareillage auxiliaires (B23K 26/16 a priorité);;
• G02B 7/00 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques

Abrégé

The invention relates to a welding head (10) for joining a workpiece (16), having a welding device which is designed to weld a joint (56) of the workpiece (16) to be processed within a working area, a light section device (30) attached to the welding device and having at least one light source (38, 46) for generating at least one line of light (42, 50) within the working area on the workpiece (16), which intersects a region to be joined (60) and a joined region (62) joined by the welding device following processing at a predetermined distance, at least one camera (24) for observing the working area of the workpiece (16) to be processed, which images the line of light (42) in the region to be joined (60) and the line of light (50) in the joined region (62) at regular time intervals, in order to generate reference data (DataR(t)) with regard to the geometry of the region to be joined (60) and measured data (DataM(t)) with regard to the geometry of the joined region (62) with a joint seam (58), and a processing unit (52) for receiving the reference data (DataR(t)) and the measured data (DataM(t)) from the at least one camera (24) and for comparing the reference data (DataR(t)) and the measured data (DataM(t)) in the respectively identical region on the workpiece before and after processing by the laser beam, so that the geometry of the joint seam (62, 58) can be determined independently of the geometry of the region to be joined (60).

Classes IPC  ?

• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée
• G01B 11/25 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en projetant un motif, p. ex. des franges de moiré, sur l'objet

Abrégé

The present invention relates to a method for classifying a laser process of a workpiece by means of a laser material processing head, comprising the steps of recording acoustic data caused by the laser process of the workpiece, transforming the acoustic data into a frequency domain by means of a wavelet decomposition or a windowed fourier transform to generate acoustic frequency features and classifying the acoustic frequency features on the basis of learned acoustic frequency features.

Classes IPC  ?

• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée
• B23K 26/02 - Mise en place ou surveillance de la pièce à travailler, p. ex. par rapport au point d'impactAlignement, pointage ou focalisation du faisceau laser
• B23K 26/42 - Traitement préliminaire; Opérations ou appareillage auxiliaires (B23K 26/16 a priorité);;
• B23K 31/12 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux relatifs à la recherche des propriétés, p. ex. de soudabilité, des matériaux
• G01N 29/04 - Analyse de solides

Abrégé

The invention relates to a laser machining head (100) for machining a workpiece by means of a working laser beam (108), with a camera (102) with an imaging lens system (116) arranged in front of said camera in the beam path for observing a machining region of the workpiece that is being machined by means of the working laser beam (108), with a focusing lens system (114) for focusing the working laser beam (108) on the workpiece surface (104) or on a position defined in relation to the workpiece surface (104), and with an evaluation unit (122) which is designed to calculate a corrective adjusting displacement (ΔZos, ΔZB) by means of an adjusting displacement (ΔdKL) of the imaging lens system (116) in the direction of the optical axis in order to refocus the camera image when there is a shift in the focal point of the focusing lens system (114), which corrective adjustment displacement compensates a shift in the focal point of the focusing lens system (114) in relation to the workpiece surface (104) or with respect to a position defined in relation to the workpiece surface (104).

Classes IPC  ?

• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée

Abrégé

The invention relates to a method for monitoring a laser machining operation to be performed on a workpiece, comprising the following steps: detecting at least two current measured values by at least one sensor, which monitors the laser machining operation, determining at least two current characteristic values from the at least two current measured values, wherein the at least two current characteristic values jointly represent a current fingerprint in a characteristic value space, providing a predetermined point set in a characteristic value space, and classifying the laser machining operation by detecting the position of the current fingerprint relative to the predetermined point set in the characteristic value space.

Classes IPC  ?

• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée
• B23K 26/02 - Mise en place ou surveillance de la pièce à travailler, p. ex. par rapport au point d'impactAlignement, pointage ou focalisation du faisceau laser

Abrégé

The invention relates to a method for monitoring a laser machining operation to be performed on a workpiece, comprising the following steps: detecting at least two current measured values by at least one sensor, which monitors the laser machining operation, determining at least two current characteristic values from the at least two current measured values, wherein the at least two current characteristic values jointly represent a current fingerprint in a characteristic value space, providing a predetermined point set in the characteristic value space, and classifying the laser machining operation by detecting the position of the current fingerprint relative to the predetermined point set in the characteristic value space, wherein the at least one sensor comprises at least one camera unit, which records camera images with different exposure times and processes them together by using a high dynamic range (HDR) method, in order to provide images having a high contrast ratio as the current measured values.

Classes IPC  ?

• B23K 26/04 - Alignement, pointage ou focalisation automatique du faisceau laser, p. ex. en utilisant la lumière rétrodiffusée
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/02 - Mise en place ou surveillance de la pièce à travailler, p. ex. par rapport au point d'impactAlignement, pointage ou focalisation du faisceau laser

Abrégé

1) or to an integer multiple thereof.

Classes IPC  ?

• B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet

Abrégé

The invention relates to a receiving device (400) having an annular insulation part (208) that has a central recess (2080), wherein at least one cooling channel (2081) extending from a front of the insulation part (208) that faces away from the workpiece through the insulation part (208) ends in a front of the insulation part (208) facing the workpiece.

Classes IPC  ?

• B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet