A laser system for generating secondary radiation through interaction of a focused primary laser beam with a target material includes a laser beam source for providing a raw laser beam, and a beam guidance device for forming the focused primary laser beam from the raw laser beam. The focused primary laser beam is directed towards a target region in order to interact with the target material arranged in the target region. The beam guidance device includes a beam focusing device configured to form the primary laser beam by focusing a laser beam entering the beam focusing device, which corresponds to the raw laser beam. The beam focusing device includes at least two mirror elements spaced apart from one another. The beam focusing device has a numerical aperture between 0.001 and 0.01 provided that the primary laser beam propagates in a medium with a refractive index of less than 1.01.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01J 37/075 - Canons à électrons utilisant l'émission thermo-ionique de cathodes chauffées par bombardement de particules ou par irradiation, p. ex. par laser
H05G 2/00 - Appareils ou procédés spécialement adaptés à la production de rayons X, n'utilisant pas de tubes à rayons X, p. ex. utilisant la génération d'un plasma
2.
CORRECTIVE WELDING METHOD AND SEAM PROCESSING DEVICE FOR CORRECTIVE WELDING
A method for corrective welding of workpieces is provided. At least a first workpiece of the workpieces has at least one faulty welding seam. The method includes providing the first workpiece that has the at least one faulty welding seam, capturing image data of the first workpiece using a camera, performing a first artificial intelligence-based image analysis of the image data in order to identify a seam position of the at least one faulty welding seam, performing a second artificial intelligence-based image analysis of the image data in order to identify at least one fault class of the at least one faulty welding seam, and determining whether a corrective welding of the at least one faulty welding seam is possible based on the seam position and the fault class of the at least one faulty welding seam.
A method for laser processing of a workpiece that has a transparent material includes dividing an input laser beam into a plurality of sub-beams by using a beam splitting element, focusing the sub-beams coupled out of the beam splitting element to form multiple focus elements, and applying the focus elements to the material of the workpiece for the laser processing. The focus elements are moved relative to the material in a feed direction. A first sub-quantity of the focus elements is arranged in a first plane. A second sub-quantity of the focus elements is arranged in at least one other plane. The first plane and the at least one other plane are spaced apart in the feed direction. The first plane and the at least one other plane are orientated perpendicular to the feed direction.
A method for separating a workpiece includes providing a machining laser beam that forms a plurality of focusing elements, introducing the focusing elements into a material of the workpiece, and moving the focusing elements parallel to an advancing line relative to the material. Material modifications are formed in the material along a machining surface that protrudes with respect to a partial region of the workpiece in a preferred direction. The method further includes subjecting the material to a heating laser beam that is moved relative to the material along a heating laser beam advancing line, thereby separating the material along the machining surface. The heating laser beam advancing line runs parallel to and is spaced apart from the advancing line with a positional offset that is anti-parallel to the preferred direction. The positional offset is at least 10% and at most 50% of a diameter of the heating laser beam.
B23K 26/38 - Enlèvement de matière par perçage ou découpage
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
B23K 26/064 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p. ex. lentilles, miroirs ou prismes
B23K 26/53 - Travail par transmission du faisceau laser à travers ou dans la pièce à travailler pour modifier ou reformer le matériau dans la pièce à travailler, p. ex. pour faire des fissures d'amorce de rupture
5.
LASER PULSE GENERATOR AND METHOD FOR GENERATING A LASER PULSE
A laser pulse generator includes a pulse shape generation device. The pulse shape generation device includes a pulse shape memory for storing data, a digital-to-analog converter connected to the pulse shape memory, a first connection for supplying a clock signal, and a second connection for outputting an output signal. The digital-to-analog converter is configured to generate the output signal in time with the clock signal arriving at the first connection. The laser pulse generator further includes a synchronization circuit. The synchronization circuit includes a third connection for connecting a trigger signal line transmitting a trigger signal. The synchronization circuit is connected to the second connection. The laser pulse generator further includes a clock stopping element connected to the first connection. The synchronization circuit is configured to control the clock stopping element according to the trigger signal and the output signal output at the second connection.
A laser system for laser machining a workpiece using an interference pattern includes at least one laser beam source for providing a plurality of coherent laser beams, an amplification device for forming amplified coherent laser beams by amplifying the plurality of coherent laser beams, a phase adjustment device for adjusting a phase difference between the plurality of coherent laser beams and/or the amplified coherent laser beams, and a beam convergence region in which output laser beams based on the amplified coherent laser beams or corresponding to the amplified coherent laser beams converge to form the interference pattern. At least beam portions of the different output laser beams converge in the beam convergence region.
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
B23K 26/064 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p. ex. lentilles, miroirs ou prismes
B23K 26/073 - Détermination de la configuration du spot laser
A method for processing a material by using laser pulses of a pulsed laser includes introducing the laser pulses into the material in order to process the material. The laser pulses are introduced into the material in a distributed manner spatially statistically around a spatial target value. A spatial statistical distribution of the laser pulses is capable of being adjusted and adapted according to a current feed rate.
B23K 26/0622 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser par impulsions de mise en forme
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
B23K 26/082 - Systèmes de balayage, c.-à-d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
B23K 26/38 - Enlèvement de matière par perçage ou découpage
8.
METHOD FOR PRODUCING DIMPLES ON THE SURFACE OF A TRANSPARENT MATERIAL
A method for producing dimples on a surface of a transparent material using laser pulses of a short-pulse laser is provided. The method includes producing at least one dimple of the dimples on the surface of the transparent material by using a single laser pulse or a single laser burst.
B23K 26/352 - Travail par rayon laser, p. ex. soudage, découpage ou perçage pour le traitement de surface
B23K 26/0622 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser par impulsions de mise en forme
9.
METHOD FOR CALIBRATING A MEASUREMENT SCANNER ON A LASER-WORKING OPTICAL UNIT
A method for calibrating a measurement scanner on a laser-working optical unit of a laser working device includes creating a measurement scan of a test body using a measurement beam, and comparing measurement scan data the measurement scan with reference data of the test body, and if the measurement scan data of the measurement scan deviate from the reference data, correcting the measurement scanner so that the measurement scan data and the reference data of the test body match.
A transparent component includes a functionalized surface. The functionalized surface has dimples and laser-induced periodic surface structures. The functionalized surface is functionalized by the dimples and the laser-induced periodic surface structures. The dimples and the laser-induced periodic surface structures spatially overlap. The dimples have a depth between 100 nm and 2000 nm.
B23K 26/352 - Travail par rayon laser, p. ex. soudage, découpage ou perçage pour le traitement de surface
B23K 26/0622 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser par impulsions de mise en forme
B23K 26/40 - Enlèvement de matière en tenant compte des propriétés du matériau à enlever
11.
DEVICE AND METHOD FOR COUPLING A LASER BEAM INTO A DOUBLE-CLAD FIBER
A device for coupling a laser beam into a double-clad fiber includes a first birefringent optical element configured to split the laser beam into two sub-laser beams polarized along base polarization components of the first birefringent optical element, a polarization rotation device configured to adjust a polarization of the sub-laser beams to provide polarization-adjusted sub-laser beams, a second birefringent optical element configured to split each of the polarization-adjusted sub-laser beams into two sub-sub-laser beams polarized along base polarization components of the second birefringent optical element, and an in-coupling optical unit configured to couple the sub-sub-laser beams with compensated first exit angles and/or first beam displacements into an inner core of the double-clad fiber, and to couple other sub-sub-laser beams into an annular core of the double-clad fiber.
B23K 26/064 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p. ex. lentilles, miroirs ou prismes
B23K 26/067 - Division du faisceau en faisceaux multiples, p. ex. foyers multiples
G02B 6/42 - Couplage de guides de lumière avec des éléments opto-électroniques
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
12.
DEVICE FOR COUPLING A LASER BEAM INTO A MULTI-CLAD FIBRE AND OPTICAL SYSTEM
A device for coupling a laser beam into a multi-clad fiber includes a beam switch for dividing the laser beam into a plurality of sub-laser-beams. The beam switch includes at least two birefringent optical wedges, and at least one polarization-influencing device having an adjustable polarization-influencing effect and being arranged between the at least two birefringent optical wedges. The device further includes an in-coupling optical unit for coupling the plurality of sub-laser-beams exiting the beam switch into the multi-clad fiber. The in-coupling optical unit is configured to couple at least two of the plurality of sub-laser-beams exiting the beam switch into at least two different light-conducting cores of the multi-clad fiber.
TRUMPF Lasersystems for Semiconductor Manufacturing GmbH (Allemagne)
TRUMPF Laser GmbH (Allemagne)
Inventeur(s)
Hoeck, Helge
Werner, Fabian
Doettling, Jürgen
Graf, Markus
Hartmann, Matthias
Jazuk, Sergej
Weisshaar, Ullrich
Lambert, Martin
Anguita Lorenz, André
Abrégé
An arrangement for laser protection includes a reflecting and/or absorbing optical element configured to be irradiated by a laser beam, and a sensor having a substrate and a meandering electrical first conductor track arranged on a first side of the substrate. The sensor is arranged indirectly or directly on the optical element or configured to detect a damage to the optical element by the laser beam.
A device for optimizing coupling of a laser beam of a laser into an optical waveguide includes a coupler configured to couple the laser beam into the optical waveguide, a mirror device configured to adjust an angle of incidence of the laser beam on the coupler in order to direct the laser beam centrally onto a fiber core of the optical waveguide, a beam offset device configured to adjust a point of incidence on the coupler in order to direct the laser beam perpendicularly onto an inlet surface of the optical waveguide, a sensor configured to detect a measure of a coupling efficiency of the laser beam into the optical waveguide, and a controller configured to receive the measure of the coupling efficiency of the laser beam from the sensor and to send control signals for electronically controllable adjustments of the mirror device and/or the beam offset device.
A laser system includes a beam deflection unit, a control unit, a laser beam source for providing a pulsed input laser beam for coupling into the beam deflection unit, and a target area for arranging a target material. The control unit is configured to control and/or regulate a position of a pulsed laser beam emerging from the beam deflection unit by actuating the beam deflection unit. The control unit has a first operating mode, in which the position of the pulsed laser beam is selected so that it is directed onto the target area, and a second operating mode, in which the position of the pulsed laser beam is selected so that it misses the target area. Pulsed laser beams provided in the second operating mode are positioned symmetrically in a chronological and/or spatial average with respect to the pulsed laser beams formed in the first operating mode.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
G03F 7/00 - Production par voie photomécanique, p. ex. photolithographique, de surfaces texturées, p. ex. surfaces impriméesMatériaux à cet effet, p. ex. comportant des photoréservesAppareillages spécialement adaptés à cet effet
16.
LASER-PROCESSING MACHINE WITH A FREQUENCY-COMB-BASED DISTANCE SENSOR AND ASSOCIATED METHOD WITH FREQUENCY-COMB-BASED DISTANCE MEASUREMENT
A laser processing machine for laser processing a workpiece by a processing laser beam includes a laser beam generator for generating the processing laser beam, a processing optical unit for directing the processing laser beam onto the workpiece, and a frequency-comb-based distance sensor. The distance sensor includes a laser source that is fed back in a frequency-shifted manner for generating a sensor laser beam with a frequency comb that spectrally shifts over time. The sensor laser beam is divided into a measurement beam and a reference beam along a measurement path and a reference path, respectively. The distance sensor further includes a detector, and an evaluation device configured to ascertain a distance value based on a frequency difference, resulting from a time-of-flight difference of the measurement beams and the reference beams superimposed on the detector, of two frequency combs originating from the measurement path and the reference path.
A method for correcting optical path length measurement errors of a measurement scanner at a laser processing optical unit includes incoupling a measurement beam of the measurement scanner for distance measurement purposes coaxially into a processing laser beam, moving the measurement beam laterally in an x-y plane over a workpiece in a vicinity of the processing laser beam, measuring distance values by the measurement scanner at different measurement points of the workpiece, and correcting the distance values in a z-direction by change values. The change values are obtained from calculated or previously known optical path lengths of the measurement beam at different selection points in the x-y plane.
A laser device includes a laser bench, and a semiconductor laser attached to the laser bench. The semiconductor laser is configured to emit laser light along a laser axis. The laser device further includes a first optical element for forming the laser light, a temperature element for controlling a temperature of the laser device, a holding element, and a Bragg grating body attached to the holding element and spaced apart from the laser bench.
A system for fault monitoring of laser welding processes on a component that is to be processed or has been processed by a laser processing apparatus includes an image recording device for creating two-dimensional image data of the component, and an evaluation unit configured to, based on the two-dimensional image data created by the image recording device, determine associated height values and create a height profile of the component by using a convolutional neural network.
B23K 31/00 - 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
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
20.
MACHINING SYSTEM AND METHOD FOR LASER MACHINING A WORKPIECE
A machining system for laser machining a workpiece includes a laser beam source for providing a plurality of coherent laser beams, a phase adjustment unit for adjusting a respective phase difference between the plurality of coherent laser beams, an amplifier for amplifying the plurality of coherent laser beams to form respective amplified coherent laser beams, a processing optic for combining the amplified coherent laser beams to form a machining laser beam and for applying the workpiece with the machining laser beam, a feed unit for controlling a position and/or an orientation and/or a movement status of the workpiece relative to the machining laser beam, a detection unit for determining a status of the feed unit, and a control unit configured to control the phase adjustment unit according to the status of the feed unit as determined by the detection unit.
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
B23K 26/0622 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser par impulsions de mise en forme
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
B23K 26/082 - Systèmes de balayage, c.-à-d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
A laser processing system includes a laser device, at least one processing and/or scanner optic, at least one laser light cable with plug connections, and a cooling circuit comprising a cooling device. The cooling circuit passes through at least the processing and/or scanner optic and the plug connections of the at least one laser light cable. A diorganopolysiloxane circulates in the cooling circuit as a coolant.
A method for determining a position of joining partners for a joining process includes providing the joining partners in a joining position, capturing a real image of the positioned joining partners, generating a false color image based on the real image, and determining, based on the false color image, at least one item of information about the position of at least one of the joining partners.
An F-theta objective has precisely three lenses. The three lenses being: a first lens with a first focal length, which is designed as a biconvex lens with a positive refractive power, a second lens with a second focal length, which is designed as a biconcave lens with a negative refractive power, and a third lens with a third focal length, which is designed as a meniscus lens with a positive refractive power. The first lens, the second lens, and the third lens are arranged one behind the other in a beam path and form a lens assembly.
G02B 13/00 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous
G02B 9/34 - Objectifs optiques caractérisés à la fois par le nombre de leurs composants et la façon dont ceux-ci sont disposés selon leur signe, c.-à-d. + ou — ayant uniquement quatre composants
G02B 13/22 - Objectifs ou systèmes de lentilles télécentriques
24.
PASSIVELY MODE-LOCKED FIBER OSCILLATOR, LASER DEVICE AND NONLINEAR CPA AMPLIFICATION SYSTEM COMPRISING SUCH A FIBER OSCILLATOR
A passively mode-locked fiber oscillator for generating seed pulses for nonlinear chirped pulse amplification (CPA) systems includes a bidirectional loop and a unidirectional loop coupled to one another by a loop coupler. The bidirectional loop includes a first amplifying fiber. The fiber oscillator has a total fiber length configured such that a repetition rate of the fiber oscillator is at most 10 MHz. The fiber oscillator further includes at least one dispersion compensation element configured such that the fiber oscillator has a total dispersion of 0.04 ps2 to 0.1 ps2.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
An apparatus for combining coherent laser beams to form at least one combined laser beam includes a phase setting device, and a gain device for amplifying the coherent laser beams to form amplified coherent laser beams. The amplified coherent laser beams are output coupled from the gain device. The apparatus further includes a control device for controlling the phase setting device based on a specified assignment rule in order to set a respective phase difference between the amplified coherent laser beams to specified target phase difference values, a measuring device for determining a respective actual phase difference value between the amplified coherent laser beams, and an optimization unit coupled to the control device and configured to optimize the assignment rule based on the actual phase difference values determined by the measuring device.
G02B 27/10 - Systèmes divisant ou combinant des faisceaux
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
27.
APPARATUS AND METHOD FOR COMBINING COHERENT LASER BEAMS, LASER SYSTEM
An apparatus for combining a plurality of coherent laser beams to form at least one combined laser beam includes a phase setting device for setting a respective phase difference between the coherent laser beams, and a gain device for amplifying the coherent laser beams. The amplified coherent laser beams are output coupled from the gain device. The apparatus further includes a measuring device configured to measure a respective actual phase difference between one of the amplified coherent laser beams and a further one of the amplified coherent laser beams or between the one of the amplified coherent laser beams and at least one reference laser beam.
G02B 27/10 - Systèmes divisant ou combinant des faisceaux
G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
28.
METHOD AND LASER SYSTEM FOR GENERATING ULTRASHORT LASER PULSES HAVING STABLE PULSE PARAMETERS
A method for generating output laser pulses includes generating input laser pulses having an equal pulse duration, and coupling the input laser pulses into an optical actuator. A dispersion of the optical actuator is settable. The method further includes setting the dispersion of the optical actuator for a current input laser pulse, so that a pulse duration change caused by a change of a temperature of at least one component and/or by a change of an ambient temperature is compensated for, and that an associated output laser pulse has a pulse duration corresponding or nearly corresponding to a target pulse duration.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
29.
OPTICAL ARRANGEMENT HAVING AN AUXILIARY RESONATOR, AND METHOD FOR AMPLIFYING OR FOR CREATING A LASER BEAM
An optical arrangement includes a disk-shaped laser-active medium configured to create an optical gain upon being pumped within a pump volume, and a laser beam incoupler for input coupling a laser beam as a seed laser beam into the laser-active medium. The laser beam interacts with the laser-active medium. The optical arrangement further includes an auxiliary resonator for creating an auxiliary resonator radiation field. The auxiliary resonator radiation field interacts with the laser-active medium. The auxiliary resonator is configured to suppress at least one mode of the auxiliary resonator radiation field that overlaps with at least one mode of the laser beam in the pump volume.
H01S 3/0941 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente produite par un laser à semi-conducteur, p. ex. par une diode laser
H01S 3/08 - Structure ou forme des résonateurs optiques ou de leurs composants
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
30.
WELDING OPTICAL UNIT WITH BEAMFORMING INSERT, AND WELDING APPARATUS
A welding optical unit for shaping a processing beam of a processing head of a welding apparatus includes a collimation lens, a focusing lens, and a beamforming insert for forming one or more spots of the processing beam on at least one workpiece to be processed. The beamforming insert has a base face and one or more side faces lying opposite the base face, which converge at a common point or in a common plateau of the beamforming insert.
A method for controlling a laser processing machine includes providing the laser processing machine. The laser processing machine includes a laser source, a process optical unit, and a control device. The method further includes creating redundant data of the laser source and of the process optical unit, transferring the redundant data of the laser source and of the process optical unit to the control device by data streaming, and comparing the redundant data of the laser source and of the process optical unit.
A mode field adapter for adapting a mode field of an input fibre to a mode field of an output fibre includes a mode field adapter fibre. The mode field adapter fibre includes a mode field adaptation section for adapting a mode field diameter of the mode field of the input fibre to the mode field of the output fibre. The mode field adapter fibre has a length between 5 mm and 150 mm. The mode field adaptation section has a length between 5 mm and 150 mm. The mode field adapter fibre is configured to transfer light from the input fibre in a polarization maintaining manner into the output fibre.
A method for adjusting a reference section of an optical coherence tomography (OCT) system includes providing the OCT system, generating a measuring beam using the OCT system, conducting the measuring beam to a measurement object, generating a reference beam using the OCT system, conducting the reference beam through the reference section, superimposing the measuring beam reflected from the measurement object and the reference beam, registering interference signals between the measuring beam and the superimposed reference beam using an interferometer of the OCT system, dividing a scanning path of the measuring beam into measurement phases and positioning phases, and adjusting the reference section exclusively in the positioning phases.
A method for monitoring a laser welding process for welding workpieces by a welding laser beam is provided. The method includes, during the laser welding process, directing a measuring beam of an optical coherence tomograph onto an interaction area in which the welding laser beam interacts with the workpieces. The measuring beam penetrates the workpieces in the interaction area in a through weld of the workpieces. The measuring beam penetrating the workpieces is incident on a reference element. The method further includes acquiring measured values using the measuring beam, defining a first measured value range corresponding to detection of a material of the workpieces, defining a second measured value range corresponding to detection of the reference element, and determine a ratio of a number of measured values lying in the first measured value range and a number of measured values lying in the second measured value range.
A device for generating a current driver voltage for a current driver of a pump diode is provided. The pump diode is configured for pumping a fibre laser. The device includes a voltage source for generating the current driver voltage. The voltage source includes a primary side and a secondary side. The secondary side is electrically isolated from the primary side. The primary side includes primary circuit breakers. The secondary side includes an accumulator for electrical charge. The voltage source is configured to generate the current driver voltage at the accumulator by switching the primary circuit breakers. The device further includes a discharge circuit configured to receive a discharge trigger voltage and to discharge the accumulator when the discharge trigger voltage assumes a predetermined value or a value range.
A laser installation includes a laser, a laser machining unit, and a safety controller. The laser is configured to provide laser light to the laser machining unit. A laser power of the laser light is variable. The safety controller is communicatively connected to the laser and the laser machining unit. The laser and/or the laser machining unit is configured to transmit at least one parameter value relating to the laser power to the safety controller. The safety controller is configured to compare the at least one parameter value with a limit value, and turn off the laser or block the laser light upon determining that the at least one parameter value exceeds the limit value.
B23K 37/00 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe
A method for processing a workpiece with a laser beam includes guiding the laser beam by a scanner optical unit of an optical system. The laser beam has a linear cross section with an aspect ratio of a long side to a short side of more than 2 when impinging on the workpiece.
B23K 26/064 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p. ex. lentilles, miroirs ou prismes
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
B23K 26/082 - Systèmes de balayage, c.-à-d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
A pulse modification apparatus for dispersive stretching or compression of laser pulses includes at least one dispersive optical element for angle separation and combination of spectral components of laser pulses, an actuator for setting a dispersion of the pulse modification device by influencing the spectral components of the laser pulses, at least one passive sensor having an output variable dependent on at least one ambient parameter, and a passive converter for converting a change of the output variable of the at least one passive sensor into a manipulated variable change of the actuator in order to compensate for an alteration of the dispersion of the pulse modification apparatus resulted from an alteration of the at least one ambient parameter.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
G02B 26/04 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander l'intensité de la lumière en modifiant périodiquement l'intensité de la lumière, p. ex. par l'utilisation de hacheurs
39.
Method for joining at least two parts to be joined
A method for joining at least two parts by using ultrashort laser pulses of a laser beam of an ultrashort pulse laser is provided. At least one of the two parts to be joined is transparent for a wavelength of the ultrashort laser pulses. The method includes joining the at least two parts by using the ultrashort laser pulses of the laser beam along a joining seam. The joining seam has at least two joining points and a joining gap lying between the at least two joining points. Each joining point is longer than 10 μm.
B23K 26/0622 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser par impulsions de mise en forme
B23K 26/244 - Soudage de joints du type à recouvrement
B23K 26/32 - Assemblage tenant compte des propriétés du matériau concerné
B23K 26/57 - Travail par transmission du faisceau laser à travers ou dans la pièce à travailler le faisceau laser entrant dans une face de la pièce à travailler d’où il est transmis à travers le matériau de la pièce à travailler pour opérer sur une face différente de la pièce à travailler, p. ex. pour effectuer un enlèvement de matière, pour raccorder par fusion, pour modifier ou pour reformer le matériau
B23K 103/00 - Matières à braser, souder ou découper
B23K 103/18 - Matériaux comportant des matières différentes
40.
PULSE MODIFICATION APPARATUS COMPRISING AT LEAST ONE PULSE STRETCHING AND/OR PULSE COMPRESSION DEVICE
A pulse modification apparatus includes at least one pulse stretcher for dispersive stretching of laser pulses and/or at least one pulse compressor for dispersive compression of the laser pulses, an actuator for setting a dispersion of the at least one pulse stretcher or a dispersion of the at least one pulse compressor by setting at least one manipulated variable, a controller for controlling the actuator based on a measurement signal, and an ambient sensor for detecting at least one ambient parameter as the measurement signal. The dispersion of the at least one pulse stretcher or the dispersion of the at least one pulse compressor is dependent on the at least one ambient parameter.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
41.
DEVICE FOR THE BEAM SHAPING OF AN INCIDENT LASER BEAM
A device for beam shaping of a laser beam includes a prism, a polarization rotator, and a thin-film polarizer. The prism is configured to split an incident laser beam into a first beam half and a second beam half. The first beam half is input coupled into the prism. The first beam half enters the prism at a first incidence side arranged at the Brewster angle vis-à-vis the incident laser beam. The first beam half input coupled into the prism is output coupled from the prism at an exit side of the prism at the Brewster angle. The thin-film polarizer is traversed by the first beam half output coupled from the prism. The polarization rotator rotates a polarization of the second beam half. The second beam half is reflected by the thin-film polarizer. The thin-film polarizer superimposes the first beam half and the second beam half.
A method for producing a bipolar plate includes providing a first plate element and a second plate element. The first plate element has at least one bead with a longitudinal extent. The method further includes forming a welded connection between the first plate element and the second plate element along the longitudinal extent by using a laser processing beam. The formation of the welded connection includes detecting a geometric feature of the at least one bead located in a transverse direction. The geometric feature is a deepest point or a point of defined depth of the at least one bead. The formation of the welded connection further includes readjusting the laser processing beam in the transverse direction to a position of the detected geometric feature, and welding the first plate element and the second plate element together at the position of the geometric feature.
A method for determining an optimized parameter set having a plurality of measurement parameters to carry out a measurement is provided. The method includes: C) carrying out and storing n measurements of a measuring element, n being an integer greater than one. Each measurement has one parameter set. Each measurement has a multiplicity of measuring points. The method further includes: D) evaluating the n measurements with an evaluation function and storing the evaluation, E) generating new parameter sets from the parameter sets used in step C), F) carrying out steps C) to E) multiple times, and J) outputting at least one parameter set that is evaluated as good.
G01B 9/02091 - Interféromètres tomographiques, p. ex. à cohérence optique
44.
Method and laser system for generating output laser pulses with an optical component with temperature-dependent power efficiency and associated computer program product
A method for generating output laser pulses from input laser pulses includes causing the input laser pulses to temporally successively pass through an optical component with temperature-dependent power efficiency. The optical component is heated by the passing of the input laser pulses. The input laser pulses emerge from the optical component as output laser pulses. The method further includes calculating a current temperature or a current temperature difference of the optical component, or a temperature-dependent current parameter based on all preceding input laser pulses or output laser pulses that have contributed to the heating of the optical component, and setting a power of a current input laser pulse based on the calculated current temperature, or the calculated current temperature difference, or the calculated current parameter, so that an associated output laser pulse has a pulse energy that deviates from a predefined pulse energy by less than 5%.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
45.
PASSIVE MODE-COUPLED FIBER OSCILLATOR AND LASER DEVICE HAVING SUCH A FIBER OSCILLATOR
A passive mode-coupled fiber oscillator includes a bidirectional loop, a unidirectional loop, and a 3x3 coupler. The bidirectional loop and the unidirectional loop are coupled to one another via the 3x3 coupler. The bidirectional loop includes a first amplification fiber that is doped using at least one element selected from the group consisting of ytterbium, neodymium, erbium, thulium, and holmium. The fiber oscillator further includes a dispersion compensation element. The fiber oscillator has an anomalous dispersion overall.
A passively mode-coupled fiber oscillator includes a bidirectional loop, a unidirectional loop, and a 3×3 coupler. The bidirectional loop and the unidirectional loop are coupled to each other by the 3×3 coupler. The bidirectional loop includes a first amplifying fiber. The fiber oscillator has overall a normal dispersion.
An apparatus for influencing a laser beam from an ultrashort pulse laser includes a pulse-precise deflector unit configured to deflect the laser beam in at least one direction perpendicular to a beam propagation direction, a transformation optics arrangement having at least two components arranged downstream of the pulse-precise deflector unit. The transformation optics arrangement is configured to transform a spatial deflection and/or an angular deflection of the laser beam into the angular deflection and/or the spatial deflection, and/or transform the spatial deflection and the angular deflection inversely, by using a space-to-angle transformation and/or an angle-to-space transformation. The apparatus further includes a processing optical unit arranged downstream of the transformation optics arrangement and configured to guide the laser beam into an image-side focal plane of the processing optical unit.
B23K 26/064 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p. ex. lentilles, miroirs ou prismes
B23K 26/0622 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser par impulsions de mise en forme
A device for machining a material using ultrashort laser pulses from a laser beam includes an input coupling system comprising an input coupling optical unit, a rotary system connected to the input coupling system and rotatable about an axis of rotation, and a machining optical unit connected to the rotary system and capable of being rotated together therewith and configured for guiding the laser beam into or onto the material to be machined. The input coupling optical unit is configured such that a laser beam is guided into a corresponding machining plane. A rotary optical unit of the rotary system and the machining optical unit are configured such that the corresponding machining plane is guided into a machining plane of the material to be machined. The device further includes a beam influencing system for positioning and/or shaping the laser beam in the corresponding machining plane.
B23K 26/0622 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser par impulsions de mise en forme
B23K 26/064 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p. ex. lentilles, miroirs ou prismes
B23K 26/38 - Enlèvement de matière par perçage ou découpage
49.
Optical fiber unit, laser system comprising such an optical fiber unit, and method for evaluating an input coupling quality of the input coupling of useful light into such an optical fiber unit
An optical fiber unit includes an optical fiber. The optical fiber includes a light guiding region configured for guiding light through the optical fiber, an input coupling end having a first fiber end surface for coupling the light into the light guiding region, and an output coupling end having a second fiber end surface for coupling the light out of the light guiding region. The optical fiber unit further includes a first end piece arranged at one of the input coupling end and the output coupling end. The first end piece is configured to couple the light into the light guiding region or couple the light out of the light guiding region. The first end piece includes a reflection element configured to divert a portion of the light propagating along a direction of propagation through the light guiding region away from the direction of propagation.
G02B 6/42 - Couplage de guides de lumière avec des éléments opto-électroniques
50.
LASER SYSTEM COMPRISING AN OPTICAL FIBER UNIT, AND METHOD FOR ASSESSING AN INPUT COUPLING QUALITY OF THE INPUT COUPLING OF USEFUL LIGHT INTO AN OPTICAL FIBER UNIT
A laser system includes a laser radiation source for emitting light, and an optical fiber unit that includes an optical fiber. The optical fiber includes a light guiding region, an input coupling end having a first fiber end surface for coupling the light into the light guiding region, and an output coupling end having a second fiber end surface for coupling the light out of the light guiding region. The laser system further includes a coupling device for coupling the light into the optical fiber unit, a reflection element configured to reflect the light coupled out of the light guiding region back toward the second fiber end surface to be coupled back into the light guiding region via the second fiber end surface, and a measuring device configured to capture the light reflected by the reflection element.
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
51.
OPTICAL ARRANGEMENT FOR PULSE COMPRESSION OF A PULSED LASER BEAM, AND LASER SYSTEM
An optical arrangement for pulse compression of a pulsed laser beam includes a grating arrangement comprising at least one diffraction grating, and a beam-expanding device comprising at least one beam-expanding optical element for forming a divergent pulsed laser beam that enters the grating arrangement divergently.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
52.
CALIBRATION APPARATUS, PROCESSING SYSTEM AND CALIBRATION METHOD
A calibration apparatus for a processing system with a plurality of optical tools is provided. The calibration apparatus includes a housing with a stop aperture, a sensor arrangement for capturing light that is incident through the stop aperture, and a light source arrangement for emitting light through the stop aperture.
G01B 21/04 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la longueur, la largeur ou l'épaisseur en mesurant les coordonnées de points
METHOD FOR MONITORING AND/OR CONTROLLING IN A CLOSED LOOP A LASER WELDING PROCESS ON THE BASIS OF OCT-CAPTURED MELT BEAD OR WELD BEAD GEOMETRY AND ASSOCIATED PROCESSING MACHINE AND COMPUTER PROGRAM PRODUCT
A method for monitoring and/or controlling in a closed loop a laser welding process for welding together two workpieces of metallic material includes, during the laser welding process, scanning a melt pool and/or a melt bead using an optical coherence tomography (OCT) measurement beam in at least one line scan, determining an actual geometry of the melt pool and/or the melt bead based on the at least one line scan, and setting at least one welding parameter controlled in the closed loop based on a deviation of the actual geometry from a target geometry of the melt pool and/or the melt bead.
B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
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
54.
LASER SYSTEM FOR NONLINEAR PULSE COMPRESSION AND GRATING COMPRESSOR
A laser system for nonlinear pulse compression includes a laser source configured to generate laser pulses with a pulse energy of at least 50 mJ, a spectral broadening device for spectrally broadening the high-energy laser pulses using self-phase modulation, and a compression device including a grating compressor having at least two diffraction gratings and configured to compress the spectrally broadened high-energy laser pulses. The laser system is configured to generate a pulse duration of the high-energy laser pulses of less than 100 fs.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Ockenfuss, Simon
Abrégé
The invention relates to a method and a set-up station for setting up a workpiece pallet (17) in a set-up station (8) for a subsequent separating process in a plate-shaped workpiece in order to produce workpiece parts, and to a workpiece pallet, wherein a workpiece support is produced from a machined pallet plate for a pallet frame of the workpiece pallet (17). In order to produce the machined pallet plate, a plate blank made of a solid material is provided, and at least one cutting contour is introduced into the plate blank in order to produce a workpiece support for supporting a workpiece part to be produced in a subsequent separating process. The workpiece support is undersized relative to the workpiece part to be produced, and at least one connecting ridge is formed upon introducing the cutting contour into the plate blank, said connecting ridge connecting the workpiece support to the rest of the pallet plate.
B23K 37/02 - Chariots pour supporter l'outillage pour souder ou découper
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
NL) by self-phase modulation. The at least one nonlinear optical medium may be a sheet-like and disk-shaped solid-state optical medium and/or a gaseous optical medium.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
57.
SET-UP STATION FOR A WORKPIECE PALLET, AND WORKPIECE PALLET
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Ockenfuss, Simon
Abrégé
The invention relates to a set-up station for a workpiece pallet (17) having supporting bars (51) which can be placed in a support plane (57) to form a workpiece support (58) and the arrangement of which to form the support plane (57) for the plate-type workpiece (59) can be adjusted to a cutting process to be performed, the set-up station comprising: a main frame (14) that includes a reception space (16) with an access (18) for introducing and extracting the workpiece pallet (17); two spaced-apart guides (19) on which the workpiece pallet is movably accommodated and which extend along the reception space (16); and at least one handling device (24, 25) that is movable along the reception space (16) and has a U-shaped or closed frame (34), wherein lateral frame portions (31) or a lower bridge (33) of the frame (34) is/are movable along the guide (19), and the at least one handling device (24, 25) allows the supporting bars (51) to be adjusted in the workpiece pallet (17) in their height in relation to the support plane (57) and/or in their position within a pallet frame (52) of the workpiece pallet (17).
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
58.
SET-UP STATION FOR A WORKPIECE PALLET, AND WORKPIECE PALLET
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Ockenfuss, Simon
Abrégé
The invention relates to a set-up station for a workpiece pallet as well as to a workpiece pallet having supporting bars, and supporting bars (51) which can be placed in a support plane (57) to form a workpiece support (58) and the placement of which to form the support plane (57) for the plate-type workpiece (19) can be adjusted to a cutting process to be performed.
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
59.
METHOD FOR PREDICTING THE WASTE PRODUCED WHEN CUTTING OUT A SHEET METAL PART
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Struckmeier, Frederick
Ottnad, Jens
Abrégé
The invention relates to a computer-implemented method for predicting the waste produced when cutting out a sheet metal part (10) from a sheet metal panel (12), comprising the steps of: A) implementing rules which assign a measure of the waste produced during cutting to properties of a contour of a sheet metal part; B) reading in information regarding a contour (14, 16, 18) of the sheet metal part (10) to be cut out; C) applying the implemented rules to properties, extracted from the read-in information, of the contour (14, 16, 18) of the sheet metal part (10) to be cut out, so that a prediction value for the waste is obtained. The invention also relates to a computer program comprising program instructions which, when the computer program is executed by a computer, cause the program - to extract properties of a contour (14, 16, 18) of a sheet metal part (10) to be cut out from information, read into a memory of the computer, regarding the contour (14, 16, 18) of the sheet metal part (10) to be cut out, and - to apply rules implemented in the program instructions to the extracted properties of the contour (14, 16, 18), so that a prediction value for the waste produced when cutting out a sheet metal part (10) from a sheet metal panel (12) is obtained.
G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projetsPlanification d’entreprise ou d’organisationModélisation d’entreprise ou d’organisation
G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
60.
METHOD FOR OCT WELD SEAM MONITORING AND ALSO ASSOCIATED LASER PROCESSING MACHINE AND COMPUTER PROGRAM PRODUCT
A method for monitoring a curved solidified weld seam during the welding of a workpiece includes carrying out distance measurements using a measurement beam of an optical coherence tomograph both at one or more pre-measurement points situated upstream of a present welding position, and at one or more post-measurement points situated downstream of the present welding position, and monitoring the curved, solidified weld seam on the basis of the distance measurements. In the case of a plurality of post-measurement points, a post-measurement line is formed from the plurality of post-measurement points and positioned to be offset relative to a pre-measurement line in the direction of the pre-measurement line toward the curved, solidified weld seam and/or is rotated relative to the pre-measurement line. In the case of a single post-measurement point, spacing the single post-measurement point from a line passing through the present welding position in the welding direction.
A method for processing a workpiece includes the steps of arranging the workpiece in a work space and guiding an OCT measurement beam of an optical coherence tomograph using a processing head so as to scan the workpiece, wherein the pose of the processing head in the work space and also the pose of the OCT measurement beam relative to the processing head are known. Distance measurement values of the optical coherence tomograph are determined during the scanning, which are used to determine at least one of the pose of the workpiece in the workspace, the presence of a workpiece in the workspace, the identity of the workpiece in the workspace, and the presence of a processing feature of the workpiece that was carried out on the workpiece in a previous processing step.
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Allemagne)
Inventeur(s)
Kieweler, Thomas
Meyer, Jeremy
Hagenlocher, Tobias
Abrégé
The invention relates to a laser machining method comprising the steps of: A) machining at least one workpiece (14) with a laser beam (24) along a trajectory; B) recording a plurality of process parameters during machining; C) determining at least one region, preferably a plurality of regions, of the trajectory (26) in which a significant change occurs only in the process parameters of a predefined subset, preferably only in one of the process parameters; and D) checking whether the significant change in the process parameters of the subset is accompanied by a significant change in the machining quality. The invention further relates to a control apparatus for a laser machining system that is designed to carry out such a method, and to a laser machining system having such a control apparatus.
B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
B23K 26/046 - Focalisation automatique du faisceau laser
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
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 26/38 - Enlèvement de matière par perçage ou découpage
B23K 31/10 - 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 au découpage ou au dépolissage
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
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
An optical arrangement for a laser beam includes an f-theta lens. The f-theta lens is disposed in a divergent beam path of the optical arrangement in order to focus the laser beam into a focus plane. The focus plane is located at a distance from a focal plane of the f-theta lens.
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
64.
Method for amplifying an ultrashort laser pulse and method for designing an amplification system
A method for amplifying an ultrashort laser pulse includes: a) stretching the ultrashort laser pulse in time, b) amplifying the time-stretched laser pulse, c) compressing the amplified time-stretched laser pulse, with at least one gain phase contribution selected from a group consisting of a gain dynamics phase contribution of the laser pulse that emerges as a change in a nonlinear phase on account of gain dynamics in step b), a gain bandwidth phase contribution of the laser pulse that emerges as a change in the nonlinear phase on account of a gain bandwidth in step b), and a combination thereof, being compensated by virtue of d) an additional phase contribution being imparted on the laser pulse prior to step c) and/or e) a spectrum of the laser pulse being changed, in such a way that the at least one gain phase contribution is compensated after step c).
H01S 3/30 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet utilisant des effets de diffusion, p. ex. l'effet Brillouin ou Raman stimulé
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
An apparatus for combining a plurality of coherent laser beams includes a splitting device for splitting an input laser beam into the plurality of coherent laser beams, a plurality of phase setting devices for adjusting a respective phase of one of the coherent laser beams, and a beam combining device for combining the coherent laser beams, which emanate from a plurality of grid positions of a grid arrangement, to form at least one combined laser beam. The beam combining device has a microlens arrangement with exactly one microlens array for forming the at least one combined laser beam.
H01S 3/23 - Agencement de plusieurs lasers non prévu dans les groupes , p. ex. agencement en série de deux milieux actifs séparés
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
G02B 27/10 - Systèmes divisant ou combinant des faisceaux
An apparatus for combining a plurality of coherent laser beams includes a splitting device configured to split an input laser beam into the plurality of coherent laser beams, a plurality of phase setting devices configured to adjust a respective phase of one of the plurality of coherent laser beams, and a beam combining device configured to combine the plurality of coherent laser beams, which emanate from a plurality of grid positions of a grid arrangement. The beam combining device includes a microlens arrangement having at least two microlens arrays. The apparatus further includes a controller configured to adjust a respective phase of a respective one of the plurality of coherent laser beams and/or vary a respective phase of a respective one of the plurality of coherent laser beams.
H01S 3/23 - Agencement de plusieurs lasers non prévu dans les groupes , p. ex. agencement en série de deux milieux actifs séparés
G02B 27/10 - Systèmes divisant ou combinant des faisceaux
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
67.
Method for displaying an OCT-scanned region of a workpiece surface and/or for measuring surface features, and associated OCT system
An OCT system includes an optical coherence tomograph for recording a height profile of a workpiece surface by optical scanning of the workpiece surface. The OCT system includes a camera for recording an image of the workpiece surface and a display for the joint, in particular superimposed, display of the recorded image and the recorded height profile of the workpiece surface. A method for displaying an optically scanned region of a workpiece surface is also provided.
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
G01B 9/02091 - Interféromètres tomographiques, p. ex. à cohérence optique
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Allemagne)
Inventeur(s)
Hagenlocher, Tobias
Kieweler, Thomas
Abrégé
The invention relates to a method for machining a plurality of workpieces (22), in which method, for machining of each of the workpieces (22), a machining head (12) of a machining plant (10) and the workpiece (22) in question are moved relative to one another by at least one machine shaft (16, 18) of the machining plant (10), so that the workpieces (22) are each machined along the same trajectory (34). For the machining of a plurality of workpieces (22), the movement takes place in different part-regions (38, 40) of a maximum range of movement (26, 28) of the at least one machine shaft (16, 18), which part-regions (38, 40) deviate from one another within pre-defined limits.
B23K 37/02 - Chariots pour supporter l'outillage pour souder ou découper
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
B23K 37/047 - Déplacement des pièces pour ajuster leur position entre les étapes de brasage, de soudage ou de découpage
A laser system is configured for providing a laser line in a working plane for line illumination of an object. The laser line extends in a first direction over a significant length and in a second direction over a small extent. The laser system comprises a laser source for providing a laser beam as basis for an elongated input laser beam propagating along a propagation direction, and a homogenization and focussing unit for homogenizing the elongated laser beam to form the laser line. The laser system is in particular suitable for providing a laser line that can be stitched to another laser line of a respective further laser system.
B23K 26/064 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p. ex. lentilles, miroirs ou prismes
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
B23K 26/073 - Détermination de la configuration du spot laser
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
G02B 27/09 - Mise en forme du faisceau, p. ex. changement de la section transversale, non prévue ailleurs
B23K 26/352 - Travail par rayon laser, p. ex. soudage, découpage ou perçage pour le traitement de surface
B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
G02B 27/14 - Systèmes divisant ou combinant des faisceaux fonctionnant uniquement par réflexion
B23K 103/00 - Matières à braser, souder ou découper
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Allemagne)
Inventeur(s)
Hagenlocher, Tobias
Demel, Peter
Kohlloeffel, Ralf
Sauter, Dietrich
Abrégé
The invention relates to a method for moving a processing head (12) of a beam tool (10) during a processing pause, the processing head being movable along a plurality of machine axes (22, 24, 26) with maximum dynamics, and the method comprising the following steps: A) specifying a transfer path (52, 54) for the processing head (12) from a processing end position (42, 44) at a workpiece (14, 16), B) specifying a withdrawal distance (54), C) calculating a movement path (56, 58) in accordance with the maximum dynamics, the movement path (56, 58) being increasingly shifted in the direction of the withdrawal distance (54) in comparison with the transfer path (50, 52), D) moving the processing head (12) from the processing end position (42, 44) along the movement path (56, 58). The invention also relates to a computer program for carrying out step C) and to a beam tool having a control device for carrying out step C).
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Baaij, Ferdinand
Epperlein, Peter
Abrégé
The invention relates to a device (10) and a method (36) for parking workpiece carriers (18) in a docking station (20). The docking station (20) has at least one accommodating space for the workpieces (18). The docking station (20) can preferably be expanded in a modular manner by at least one further accommodating space. The docking station (20) has a position sensor (24) which is connected to a manufacturing execution system (MES) (14) and designed to report the correct parking position of the workpiece carrier (18) in the accommodating space to the MES (14). The MES (14) may be designed to bring about and control a movement of a driverless transport vehicle (16) on the basis of this notification.
A method for distance measurement includes: (a) measuring a focus distance between a z-focus position of a processing laser beam and a reference surface, and measuring a reference distance between a reference arm mirror of a coherence tomography apparatus and the reference surface using a measurement beam. The processing laser beam is directed onto the reference surface via a laser processing optical unit. The measurement beam is directed onto a same point of the reference surface as the processing beam or onto a point of the reference surface next to an impingement point of the processing beam. The method further includes (b) measuring a workpiece distance between the reference arm mirror and a workpiece surface using the measurement beam directed onto the workpiece surface, and (c) determining the distance between workpiece surface and the z-focus position based on the reference distance and the workpiece distance and the focus distance.
G01B 11/02 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur
A61B 3/10 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure objective, c.-à-d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
G01B 9/02091 - Interféromètres tomographiques, p. ex. à cohérence optique
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
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
ZIGPOS GMBH (Allemagne)
Inventeur(s)
Wahl, Eberhard
Schumacher, Andreas
Mademann, Erik
Götze, Christoph
Scholz, Markus
Abrégé
The invention relates to a UWB anchor (22a-c), comprising a first UWB antenna (24a-c) for communication with a first mobile unit (14) and a second UWB antenna (26a-c) for communication with a second mobile unit (16). The UWB anchor (22a-c) is preferably designed for communication in different frequency bands. The UWB anchor (22a-c) can be part of a locating system (12). The invention also relates to a method for locating two different mobile units (14, 16) by means of UWB anchors (22a-c) having two different UWB antennas (24a-c, 26a-c).
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
G01S 3/18 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant une comparaison d'amplitude de signaux provenant successivement d'antennes ou de systèmes d'antennes réceptrices ayant des caractéristiques de directivité différemment orientées ou d'un système d'antenne ayant une caractéristique de directivité à orientation variant périodiquement provenant directement d'antennes directionnelles séparées
75.
METHOD FOR IDENTIFYING A FAULT IN A MACHINING PROCESS, AND PROCESSING MACHINE
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Magg, Winfried
Regaard, Boris
Schindhelm, David
Kessler, Steffen
Abrégé
The invention relates to a method for identifying faults in a machining process, in particular in a cutting process, comprising: machining a workpiece, in particular by cutting, by moving a machining tool, in particular a laser machining head, and the workpiece relative to one another, recording an image of an area to be monitored on the workpiece, comprising an area of interaction (18) between the machining tool and the workpiece, and evaluating the image of the area to be monitored in order to identify at least one fault in the machining process. To identify the fault, the evaluation of the image involves detecting the presence or absence of a local intensity drop (ΔI) in an intensity profile (I) within the area of interaction (18) along a direction of advance (V) of the machining process. The invention also relates to an associated processing machine.
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Epperlein, Peter
Baaij, Ferdinand
Abrégé
The invention relates to a method for precisely locating a mobile unit (28a) and for navigating a sensor unit (18) relative to the mobile unit (28a). The method includes roughly navigating the sensor unit (18) to the mobile unit (28a) by means of an MES (22). The MES (22) can obtain the rough position data necessary for this from a posting and/or a positioning system (24). The mobile unit (28a) has a first transmitter (34), which is designed to transmit a coded signal (32). Said coded signal (32) is received by a sensor (30) of the sensor unit (18). Using the coded signal (32), the mobile unit (28a) is identified and its signal position data determined. The MES (22) can be designed to further navigate the sensor unit (18) using the precise signal position data. The invention further relates to a device (10) for corresponding navigation of a sensor unit (18).
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
77.
METHOD AND DEVICE FOR CREATING MEANINGFUL CUT EDGE IMAGES
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. (Allemagne)
Inventeur(s)
Tatzel, Leonie Felica
Ottnad, Jens
Stahl, Janek
Jauch, Christian
Abrégé
The invention relates to a device (10) for analysing a cut edge (12) of a workpiece (14). The workpiece (14) can be held in a workpiece holder in order to illuminate the cut edge (12) with a first light source (24) at an acute angle (w1). The illumination by the first light source (24) preferably takes place parallel or antiparallel, except for a few degrees, to the cut direction (16) of the cut edge (12). The first light source (24) is preferably offset parallel to the workpiece plane (18). In other words, the illumination by the first light source (24) takes place at an acute angle (w1) to a plane which extends perpendicular to the workpiece plane (18) in the direction of the longitudinal axis of the cut edge (12). The first light source (24) is preferably offset parallel to the workpiece plane (18). The device (10) has a camera (20), the optical axis (34) of which preferably extends in the workpiece plane (18). A computer can have an algorithm, in particular with a neural network, to analyse cut edge images created using the camera (20). The invention also relates to a method for analysing the cut edge (12), in particular using such a device (10).
G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes
G01B 11/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la rugosité ou l'irrégularité des surfaces
78.
Device and method for transporting pulsed laser radiation with a hollow core optical fiber
A device for transporting pulsed laser radiation includes a pulse duration setting device configured for setting a transport pulse duration of the pulsed laser radiation. the device further includes a hollow core optical fiber having a hollow core surrounded by a material. The hollow core optical fiber is configured to be operated with beam path parameter values that are present at the first fiber end and lie in a target tolerance range. The device further includes a fiber input coupling device configured to couple the pulsed laser radiation into the hollow core optical fiber with the beam path parameter values that lie in the target tolerance range. the transport pulse duration is set so that input coupling of the pulsed laser radiation into the hollow core is provided for all of the beam path parameter values in the target tolerance range.
G02B 6/42 - Couplage de guides de lumière avec des éléments opto-électroniques
G02B 6/032 - Fibres optiques avec revêtement le noyau ou le revêtement n'étant pas un solide
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
A cooling device for providing passive radiation cooling includes a base substrate and a coating that is arranged on the base substrate and absorbs light of certain wavelength ranges. The base substrate is a metal substrate.
F28F 13/18 - Dispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution par application de revêtements, p. ex. absorbant les radiations ou les réfléchissantDispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution par application d'un traitement de surface, p. ex. un polissage
F28F 21/08 - Structure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de métal
C25D 5/34 - Prétraitement des surfaces métalliques à revêtir de métaux par voie électrolytique
C25D 5/48 - Post-traitement des surfaces revêtues de métaux par voie électrolytique
C25D 3/46 - Dépôt électrochimiqueBains utilisés à partir de solutions d'argent
B05D 1/28 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces par transfert de liquides ou d'autres matériaux fluides, à partir de la surface d'éléments porteurs, p. ex. de pinceaux, tampons, rouleaux
C09D 7/61 - Adjuvants non macromoléculaires inorganiques
C09D 133/12 - Homopolymères ou copolymères du méthacrylate de méthyle
C09D 133/26 - Homopolymères ou copolymères de l'acrylamide ou du méthacrylamide
80.
READJUSTMENT DEVICE AND READJUSTMENT METHOD FOR A PLATE-SHAPED WORKPIECE IN A PROCESSING MACHINE
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Tränklein, Dennis
Hager, Tino
Preisser, Christoph
Abrégé
The invention relates to a readjustment device and a method for a machine tool (1) for processing plate-shaped workpieces (10), preferably sheet metal, comprising an upper pressing device (234) which comprises pressure tappets (241) facing each other at least in a mutually spaced manner; a lower support device (235) that has counter bearings (260) which are arranged at least in a mutually spaced manner and which are aligned towards the pressure tappets (241) of the upper pressing device (234) in order to fix the plate-shaped workpieces (10) in a clamped manner in a working position (232); and at least one drive device (243) by means of which the pressure tappets (241) of the upper pressing device (234) can be converted from a rest position (231) to the working position (232), and the at least two pressure tappets (241) of the upper pressing device (234) are connected together and can be movably or pivotally actuated together between the rest position (231) and the working position (232).
B21D 43/10 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de pinces ou de griffes
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Wahl, Eberhard
Abrégé
The invention relates to a positioning system (10) and to a method for operating a positioning system (10) of this type. The positioning system (10) comprises a radio communication network (20) having at least one data network connection component (18a-d). The data network connection component(s) (18a-d) is/are designed for the transmission of data streams via a radio communication network (20) with reserved resources or bandwidths to a plurality of UWB anchors (16a-l). In this case, at least some UWB anchors (16a-l) can be designed for a wireless transmission of data streams.
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
82.
LASER CUTTING METHOD FOR CUTTING OUT A WORKPIECE PART
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Kaiser, Tobias
Abrégé
Provided is a laser cutting method for cutting a workpiece part (62) out of a metal, in particular panel-shaped, workpiece (6), the method comprising the following steps: cutting, by means of a laser beam (5) and a cutting gas (7) and using predefined cutting parameters, the workpiece (6) along a predefined cutting path; changing the cutting parameters in an end portion of the cutting path such that a material web (68) remains between the workpiece part (62) and a workpiece remainder (64) of the workpiece (6), the material web (68) fastening the workpiece part (62) to the workpiece remainder (64); cooling the workpiece (6) in the region of the material web (68) by means of the cutting gas (7) and/or by means of a suitable cooling fluid; and releasing the workpiece part (62) from the workpiece remainder (64) by cutting, by means of the laser beam (5) and the cutting gas (7), the material web (68). Also provided is a laser cutting machine suitable for carrying out the method.
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Poenitz, Willi
Teschner, Marc
Weiss, Korbinian
Abrégé
The invention relates to a method for storing a current reference image of an unloaded workpiece support (16). In the process, a step A) is first carried out of generating an image of the workpiece support (16); in a step B), the image is evaluated by an algorithm (26); and in a step C), the image is stored as a reference image if the algorithm (26) classifies the workpiece support (16) as being empty. In order to evaluate the workpiece support (16), the algorithm (26) can have a maximally stable extremal regions algorithm, an algorithm for detecting webs (40) of the workpiece support (16), and/or a neural network. The invention additionally relates to a device (10) for carrying out such a method.
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
84.
UNLOADING STATION FOR A MACHINE TOOL, AND MACHINE TOOL FOR CUTTING TUBULAR OR ROD-SHAPED WORKPIECES
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Jarsch, Florian
Abrégé
The invention relates to an unloading station for a machining station (12) and to a machine tool (11) for cutting tubular or rod-shaped workpieces (13), the unloading station comprising an unloading device (26), which receives workpieces (13) led out of a machining station (12), and at least one workpiece support (29), into which the at least one workpiece (13) can be transferred from the unloading device (26), wherein an ejection device (28) for selectively ejecting workpieces (13) from the unloading device (26) is provided, which ejection device comprises a longitudinal conveying device (31) extending at least between the unloading device (26) and the workpiece support (29) and comprises a workpiece switch (32), by means of which the workpiece (13) led away from the unloading device (26) can be transferred into the longitudinal conveying device (31) or onto the workpiece support (29).
A method for welding a copper/aluminum connection includes providing a first workpiece, which consists of a copper-containing material, in particular at least 80% by weight Cu, and a second workpiece, which consists of an aluminum-containing material, in particular at least 80% by weight Al, and welding the first workpiece and the second workpiece to one another in a surface region by means of a laser beam moved in relation to the first and second workpieces along a welding path. The laser beam is directed onto a surface of the first workpiece and the second workpiece is arranged behind the first workpiece with respect to the laser beam, with a greatest spot diameter SD of the laser beam on the surface of the first workpiece, where SD≤120 μm. The welding path is chosen such that the laser beam progressively penetrates into solid workpiece material along the welding path.
B23K 26/244 - Soudage de joints du type à recouvrement
B23K 26/323 - Assemblage tenant compte des propriétés du matériau concerné faisant intervenir des parties faites de matériaux métalliques dissemblables
86.
Beam shutter, laser arrangement and operating method for a laser arrangement
A beam shutter is for a laser beam. The beam shutter includes: a reflecting optical unit configured to deflect the laser beam; a holding arm, which is capable of being brought into a release position and a shut-off position and on which the reflecting optical unit is held; a sensor circuit with at least one sensor component arranged between the reflecting optical unit and the holding arm; and an evaluation device, which is configured to interact with the sensor circuit, at least in the shut-off position of the holding arm.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
87.
MOBILE COMMUNICATIONS DEVICE AND MACHINE TOOL CONTROLLABLE BY MEANS OF THE MOBILE COMMUNICATIONS DEVICE
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Deiss, Magnus
Kiefer, Manuel
Abrégé
The invention relates in summary to a machine tool arrangement (10) having a machine tool (12) and a mobile communications device (26), wherein an application (32) for at least partially controlling the machine tool (12) is installed on the mobile communications device (26). The machine tool arrangement (10) has a sensor device (18), measured data of which can be displayed in the application (32). The sensor device (18) can be designed in the form of at least one camera (20a-c), images of which can be displayed in the application (32). A control arrangement (16) of the machine tool arrangement (10) can have a chatbot (36) for communication of the machine tool (12) with a user of the application (32). The application (32) is further designed for communication with another application (40) on another mobile communications device (38) to enable the user to coordinate with another user. The control arrangement (16) can be designed to inform the user of the application (32) only in exceptional cases. An exceptional case can be determined from data of the machine tool (12) and/or from data of the sensor device (18) analysed by a filter (34).
H04L 51/02 - Messagerie d'utilisateur à utilisateur dans des réseaux à commutation de paquets, transmise selon des protocoles de stockage et de retransmission ou en temps réel, p. ex. courriel en utilisant des réactions automatiques ou la délégation par l’utilisateur, p. ex. des réponses automatiques ou des messages générés par un agent conversationnel
88.
METHOD AND DEVICE FOR LASER CUTTING BY MEANS OF A LASER BEAM GUIDED IN A MULTICORE FIBRE, AND ASSOCIATED COMPUTER-PROGRAM PRODUCT
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Häcker, Tobias
Pang, Hao
Abrégé
In a method for the laser working, in particular laser cutting, of workpieces (2) by means of at least one laser beam (3), which is guided in a multicore fibre (5), which has a number of fibre cores (6), in particular at least three, arranged next to one another in parallel along a straight line (A), in the direction of a workpiece (2), according to the invention the number of fibre cores (6) into which the at least one laser beam (3) is injected and/or the division of the laser power of the at least one laser beam (3) among the fibre cores (6) is/are set in accordance with a property of the workpiece or a parameter of the working process.
A pulse compressor includes a plurality of optical components. The plurality of optical components includes a diffraction grating. A first optical component of the optical components is fastened to base plate by at least first and second intermediate elements that are laser-welded to one another. The first intermediate element is fastened to the base plate and the second intermediate element is fastened to the optical component. A joining surface of the first and second intermediate elements is formed as a bearing recess and another joining surface is curved. At least the laser-welded joining surfaces of the first optical component, the base plate, and the first and second intermediate elements are formed from materials for which a difference in their coefficients of thermal expansion is less than 10e-6/K.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Raichle, Florian
Wolf, Dennis
Weick, Florian
Müller, Thomas
Bohy, Mathieu
Wiens, Jonathan
Abrégé
This application relates to a method and a machine for cutting and removing workpiece parts from a planar material. The invention relates to a method and a machining machine (1) for cutting and removing at least one workpiece part (20) from a planar material (2), more particularly metal sheet, wherein: - the at least one workpiece part (20) is cut by means of a cutting beam (3) directed at the planar material (2) and the workpiece part (20) is separated from the planar material (2); - the at least one workpiece part (20) is removed, as a removal part, from the planar material (2) as a skeleton; - the workpiece part (20), which has been cut free, is lifted out of a workpiece support plane (E) of the planar material (2) by means of a lift-out device (26) and is removed by means of a gripping device (27); and - the at least one sacrificial part (41) is cut free from the planar material (2) before the workpiece part (20) is cut free in the planar material (2) or skeleton (22).
B23K 7/00 - Découpage, décriquage ou dépolissage, par chauffage à la flamme
B23K 7/10 - Dispositifs auxiliaires, p. ex. pour guider ou supporter le chalumeau
B23K 9/013 - Découpage, entaillage, décriquage ou dépolissage à l'arc
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
B23K 26/38 - Enlèvement de matière par perçage ou découpage
B23K 37/00 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe
B23K 37/02 - Chariots pour supporter l'outillage pour souder ou découper
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Tatzel, Leonie Felica
Abrégé
The invention relates to a method for detecting cutting parameters (18) which are of particular importance to certain features of a cutting edge (16). A captured image (32) of the cutting edge (16) is analyzed by an algorithm (34) using a neural network (36) in order to ascertain (38) the cutting parameters (18). The captured pixels (42a, b) which play a significant role in the process of determining the cutting parameters (18) are identified by means of a backpropagation (40) of the analysis. An output (50) in the form of a display of said significant captured pixels (42a, b), in particular in the form of a heat map, shows a user of the method which cutting parameters (18) must be modified in order to improve the cutting edge (16). The invention additionally relates to a computer program product or a device for carrying out the method.
B23K 26/38 - Enlèvement de matière par perçage ou découpage
B23K 31/00 - 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
G05B 19/406 - 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 contrôle ou la sécurité
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Kraus, Christoph
Mach, Patrick
Krutzke, Michael
Abrégé
DD of 1.5 to 4 mm on the workpiece-side nozzle end face (8), and in that, before the exiting from the cutting nozzle (1), the cutting gas pressure is 15 to 30 bar. Thus, high productivity can be achieved together with reduced risk of collision, i.e. higher process reliability.
B23K 26/38 - Enlèvement de matière par perçage ou découpage
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
93.
METHOD FOR PRODUCING AT LEAST ONE WORKPIECE PART AND A RESIDUAL WORKPIECE FROM A WORKPIECE
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
WSOPTICS TECHNOLOGIES GMBH (Allemagne)
Inventeur(s)
Sepp, Florian
Mock, Daniel
Mach, Patrick
Weiss, Christoph
Abrégé
The invention relates to a method for producing at least one workpiece part (11) and a residual workpiece (10) from a workpiece (9) by means of a laser beam (16) and process gas for expelling molten workpiece material, which laser beam and process gas are emitted jointly from a nozzle (13) of a laser processing head (2), the method having the following steps: step a): cutting a portion (15-1, 15-2, 15-3, 15-4, 15-5) of a kerf (15) separating the workpiece (9) along a cutting line (14) or cutting a closed kerf (15) along the cutting line (14), wherein cutting edges (19, 19') are formed on the workpiece part (11) and residual workpiece (10), step b): producing a modification of the workpiece (9), selected from a chamfer (21), a fillet (34) and a trough (29), on an upper side (35) of the workpiece along a modification line (18), while the workpiece part (11) is connected to the residual workpiece (10), wherein the laser beam (16) in steps a) and b) is directed perpendicularly to a workpiece surface (17) of the upper side (35) of the workpiece and wherein a gas pressure of the process gas prior to exiting the nozzle (13) in step b) is less than 7 bar, in particular between 3 and 6 bar, wherein - step a) is carried out prior to step b), wherein in step a) a portion (15-1, 15-2, 15-3, 15-4, 15-5) of the kerf (15) is created along the cutting line (14), and subsequently in step b) at least part of at least one of the cutting edges (19, 19') on the workpiece part (11) or on the residual workpiece (10) is provided with a chamfer (21) or a fillet (34), or - step b) is carried out prior to step a), wherein in step b) a trough (29) is created on the upper side (35) of the workpiece, and subsequently in step a) a closed kerf (15) is created along the cutting line (14) or a portion (15-1, 15-2, 15-3, 15-4, 15-5) of the kerf (15) is created along the cutting line (14), wherein the cutting line (14) is located within the trough (29).
A processing head for guiding a laser beam for processing a workpiece includes a housing main body configured to accommodate a beam guiding element. The housing main body has a first main surface section and a second main surface section. The processing head further includes a functional module configured to connect to the housing main body or to be inserted into the housing main body. The first main surface section and the second main surface section of the housing main body are aligned with one another, at least partly surround a free internal volume of the housing main body, and are configured differently from one another for receiving and/or for inserting the functional module and/or a functional component.
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Struckmeier, Frederick
Abrégé
The invention relates to a method for detecting a fitting position (15) of a supporting bar (13) in a pallet (3), which, in order to be used with a flat bed machine tool (1), in particular a laser cutting or plasma cutting flat bed machine tool, is equipped with a plurality of supporting bars (13) in a longitudinal direction. Each of the supporting bars (13) has a plurality of supporting bar points (17) in a main direction of extent (13a) which is oriented transversely to the longitudinal direction of the pallet (3). The supporting bar points (17) of the plurality of supporting bars (13) define a supporting plane (17a). The method comprises the steps of: - establishing a two-dimensional contrast image dataset, having a plurality of pixels, of the pallet (3), wherein each pixel is assigned a pixel value and a pixel area unit of the supporting plane (17a), and the contrast image dataset comprises regions, which are assigned to the supporting bar points (17), as local pixel value extremes in a unitary pixel value substrate, - determining a longitudinal position in the contrast image dataset of those regions that are assigned to the supporting bar points (17) of one of the plurality of supporting bars (13), using the local pixel value extremes, and - deducing the fitting position (15) of the supporting bar (13) in the pallet (3) on the basis of the longitudinal position in the contrast image dataset and an extent of the pixel area unit in the longitudinal direction.
B23K 37/02 - Chariots pour supporter l'outillage pour souder ou découper
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
G05B 19/404 - 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 des dispositions de commande pour la compensation, p. ex. pour le jeu, le dépassement, le décalage d'outil, l'usure d'outil, la température, les erreurs de construction de la machine, la charge, l'inertie
A method generates laser pulses by varying a Q-factor in a resonator. The method includes generating the laser pulses by controlling an optical modulator with a control signal for switching over between a first operating state of the optical modulator for generating a first Q-factor in the resonator and a second operating state of the optical modulator for generating a second Q-factor in the resonator. The second Q-factor is different than the first Q-factor. In order to generate a sequence of the laser pulses in which first laser pulses alternate with second laser pulses different than the first laser pulses, the optical modulator is controlled differently in each case alternately with the control signal for generating a respective first laser pulse, of the first laser pulses, and a respective second laser pulse, of the second laser pulses.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/081 - Structure ou forme des résonateurs optiques ou de leurs composants comprenant trois réflecteurs ou plus
H01S 3/11 - Blocage de modesCommutation-QAutres techniques d'impulsions géantes, p. ex. vidange de cavité
98.
Method and computer program product for OCT measurement beam adjustment
A method determines translational and/or rotational deviations between the measurement coordinate system of a measurement mirror scanner and the processing coordinate system of a processing mirror scanner. A measurement beam reflected at a workpiece returns on a path of an incident measurement beam and is captured by a spatially resolving measurement sensor to ascertain spatially resolving information of the workpiece. The reflected measurement beam, in a sensor image of the measurement sensor, is imaged onto a previously known image position. This is accomplished by ascertaining a focal position deviation of the processing beam by scanning with the processing beam, evaluating a laser power detected at grid points, fixing the processing mirror scanner, capturing spatially resolving height information of the pinhole diaphragm by the measurement sensor, and determining a translational deviation between the processing and measurement coordinate systems based on the deviation.
B23K 26/046 - Focalisation automatique du faisceau laser
B23K 26/082 - Systèmes de balayage, c.-à-d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
B23K 26/242 - Soudure en angle, c.-à-d. soudure de section essentiellement triangulaire joignant deux parties
G01B 9/02091 - Interféromètres tomographiques, p. ex. à cohérence optique
G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques
G01B 21/04 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la longueur, la largeur ou l'épaisseur en mesurant les coordonnées de points
99.
METHOD FOR CONTROLLING THE PRODUCTION OF A SHEET METAL COMPONENT AND METHOD FOR PRODUCING A SHEET METAL COMPONENT OR A PLURALITY OF DIFFERENT SHEET METAL COMPONENTS
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
Inventeur(s)
Steiling, Jonas
Abrégé
The invention relates to a computer-implemented method for controlling the production of a sheet metal component, the method comprising the following steps: A) reading (102) CAD data of an initial design of the sheet metal component, C) parameterizing (106) the CAD data so that parameter values of the CAD data are obtained, D) evaluating (108) the optimizability of the initial design of the sheet metal component by means of artificial intelligence on the basis of the parameter values of the CAD data, and outputting (110) an evaluation result. The invention also relates to a computer program comprising programming commands which, during the execution of the computer program by a computer, prompt said computer to carry out the method according to one of the preceding claims.
G06F 30/27 - Optimisation, vérification ou simulation de l’objet conçu utilisant l’apprentissage automatique, p. ex. l’intelligence artificielle, les réseaux neuronaux, les machines à support de vecteur [MSV] ou l’apprentissage d’un modèle
TRUMPF WERKZEUGMASCHINEN GMBH + CO. KG (Allemagne)
TECHNISCHE UNIVERSITAET DORTMUND (Allemagne)
Inventeur(s)
Mieth, Carina
Kallat, Fadil
Rehof, Jakob
Abrégé
The invention relates to a method for determining an optimum combination of sheet metal working installations (12a-12d) on a production site (10). The method involves multiple, in particular a multiplicity of, preferably all, possible installation combinations being created. This creation is preferably performed by a CLS module (CLS solver) (24). The created installation combinations are then ranked on the basis of at least one predefined optimization criterion (32). The optimization criterion (32) can be available in the form of the total installation costs and/or the total production time of the respective installation combination. The ranking can be carried out by means of an SMT module (SMT framework) (28). The SMT module (28) can additionally perform filtering on the basis of specific constraints (30), for example on the basis of a total production time that must not be exceeded for the respective installation combination. This allows well-trodden paths for the planning of a production site (10) to be left and unexpected optimum installation combinations to be found. The invention also relates to a computer program product for carrying out the method.
