The invention relates to a method, in particular an LMF, SLS, or EBM method, for an additive manufacture of at least one component (19) in layers in a powder bed (15) using at least two beams (11a, 11b) which can be deflected two-dimensionally, wherein the powder bed (15) has multiple powder bed layers which are divided into multiple segments by means of multiple segmentation lines (14a, 14b) running approximately perpendicularly to the direction of a gas flow (G), wherein the gas flows in a substantially parallel manner over the powder bed (15), the at least two beams (11a, 11b) solidify the at least one component (19) to be solidified by means of a substantially equal laser load within a segment of the powder bed layer (15), and individual segmentation lines (14a, 14b) of each powder bed layer are adapted on the basis of a criterion.
The invention relates to a device (10) for selective laser melting of a near-α Ti alloy (34). The device (10) has a layer arrangement (16) with layers (14a, 14b, 18) applied on top of one another, wherein at least one of the layers (14a) has the near-α Ti alloy (34). The layer arrangement (16) is arranged on a substrate panel (12) of the device (10). A laser beam source (24) is designed to selectively melt the layers (14a, 14b, 18) using a laser beam (26). A heating unit (20) of the device (10) can introduce heat energy into an uppermost layer (18) of the layer arrangement in the direction (SR) from the substrate panel (12) to the layer arrangement (16), in order to heat the uppermost layer (18) to a temperature between 250°C and 600°C. The uppermost layer (18) is, in particular, the layer of the layer arrangement (16) at the greatest distance from the substrate panel (12).
TRUMPF ADDITIVE MANUFACTURING ITALIA S.R.L. (Italie)
TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Allemagne)
Inventeur(s)
Michieli, Niccolò
Mantoan, Elia
Pfitzner, Dieter
Blickle, Valentin
Lampert, Bastian
Abrégé
000+10+10+1) on the working plane (18), which is in view of the observer optical system (12), wherein the observer optical system (12) detects the positionings of the first predefined pattern (14a) and the second predefined pattern (14b), and wherein a control unit (5) compares the positionings of the first predefined pattern (14a) and the second predefined pattern (14b) to compute a misalignment error (16) between the first scanning unit (9a) and the second scanning unit (9b).
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p.ex. par frittage ou fusion laser sélectif
B29C 64/277 - Agencements pour irradiation utilisant des moyens de rayonnement multiples, p.ex. des micro-miroirs ou des diodes électroluminescentes multiples [LED]
B29C 64/30 - Opérations ou équipements auxiliaires
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
4.
METHOD FOR MEDIA-IMPERMEABLE WELDING OF ALUMINUM-CONTAINING COMPONENTS
A method for welding at least two aluminum-containing components is provided. The components have an aluminum content of at least 75% by weight. The method includes subdividing an output laser beam into multiple partial beams directed onto the components, so that multiple laser spots are generated on a surface of the components, and traversing a welding contour on the surface of the components with the multiple laser spots. Laser spot centers of at least three laser spots of the multiple laser spots are arranged in a ring formation. The output laser beam is generated by a multifiber, so that each laser spot of the multiple laser spots on the surface of the components has a core portion and a ring portion, with a mean power density in the core portion being higher than a mean power density in the ring portion.
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
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
B23K 26/244 - Soudage de joints du type à recouvrement
B23K 26/26 - Soudage de joints continus rectilignes
5.
METHOD AND DEVICE FOR CONTROLLING A HEAT INPUT INTO A COMPONENT
The invention relates to a method for controlling a heat input into an additively manufactured component by a laser beam, comprising the steps of: periodically scanning a surface of the component with the laser beam; detecting, during the periodic scanning, photoemissions that are emitted by a predetermined partial region of the surface that is irradiated by the laser beam; determining a periodic temperature profile of a surface temperature and average surface temperature on the basis of the detected photoemissions; calculating a deviation of the average surface temperature from an upper limit of a predetermined target temperature range and from a lower limit of the predetermined target temperature range, wherein the upper limit of the predetermined target temperature range is below the melting temperature of a material used for the component; and adapting, on the basis of the calculated deviations, an energy input into the component that is controlled by a laser controller. The invention also relates to an alternative method and to a corresponding device for controlling a heat input into a component by a laser beam.
The invention relates to a method for the heat treatment of an additively manufactured portion of a component, comprising the steps of: calculating parameters relating to irradiation of a surface of the additively manufactured portion of the component by at least one laser beam for the heat treatment of the component, wherein the parameters comprise at least a laser-beam power along a scanning path on the surface of the component, wherein the parameters are calculated in such a way as to heat up the surface to a target temperature range, and wherein an upper temperature limit of the target temperature range lies below the melting temperature of the material used for the component; activating at least one laser and a beam-controlling device for periodically scanning the surface with the at least one laser beam according to the calculated laser-beam power along the calculated scanning path. The invention also relates to a method for the additive manufacture of a component, to a corresponding device for the subsequent heat treatment of an additively manufactured portion of a component, to a corresponding computer program and to a corresponding computer-readable medium.
A method for welding at least two aluminum-containing components is provided. Each component has a content of at least 75% by weight of aluminium. The method includes subdividing an output laser beam into multiple partial beams directed onto the components such that multiple laser spots are generated on a surface of the components, and traversing a welding contour on the surface of the components with the multiple laser spots. Laser spot centers of at least three laser spots of the multiple laser spots are arranged in a ring formation. The output laser beam is generated by a multifiber such that each laser spot of the multiple laser spots on the surface of the components has a core portion and a ring portion. The welding contour is at least partially traversed by pivoting a first mirror in a controlled manner by a scanner optical unit.
An apparatus for laser processing of a workpiece is provided. The workpiece includes a transparent material. The apparatus includes a beam shaping device for forming a focus zone from an input laser beam. The focus zone is formed in elongate fashion in relation to a longitudinal axis. The focus zone has, in a plain perpendicular to the longitudinal axis, an asymmetric cross-section with a preferred direction. The apparatus further includes an actuating device for altering the preferred direction during the laser processing of the workpiece, and a control device for controlling the actuating device based on a predefined assignment specification in order to control the preferred direction by open-loop control or closed-loop control during the laser processing of the workpiece.
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/046 - Focalisation automatique du faisceau laser
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
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
9.
BIPOLAR PLATE FOR A FUEL CELL AND PROCESS FOR WELDING A BIPOLAR PLATE
A method for laser welding of a bipolar plate for a fuel cell is provided. The bipolar plate includes two metallic plate parts. The method includes producing at least one continuously enclosing first weld seam with a first seam width, and producing at least one second weld seam with a second seam width. The second seam width is at least 10% greater than the first seam width.
H01S 3/102 - 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 par commande du milieu actif, p.ex. par commande des procédés ou des appareils pour l'excitation
A method for coating a rotating surface region of a workpiece by laser build-up welding includes fusing a powdery coating material prior to impact on the workpiece in a laser beam that is directed at the surface region, capturing a spatially resolved intensity profile of thermal radiation emitted by the workpiece, comparing at least one property of the intensity profile with at least one predefined target value, and modifying at least one parameter of a coating procedure based on a result of the comparison.
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
11.
COMPRESSED STORAGE OF INFORMATION FOR ADDITIVE MANUFACTURING
When all the figures of the drawing are considered jointly, the invention relates in summary to a method for compressing the volume of data in a file (26), for guiding a tool (16) along manufacturing coordinates for the additive manufacturing of a component (14), in a computer (27). In this case, at least one vector is determined and stored in the file (26), which vector, together with an algorithm (32), defines manufacturing parameters for filling a first region of the component (14). The algorithm (32) can be stored in the file (26) or stored in a library (30) and reference can be made to the algorithm (32) in the file (26). Alternatively or additionally, a second region of the component (14) to be filled can be defined in the file (26) by virtue of the fact that a first region is defined in the file (26) and the file (26) stores where the second region (38b) is intended to be formed and that said second region is intended to be formed in the same manner as the first region. In addition to a second region (38b), this method can be continued for any number of further regions. In a method (12) according to the invention for manufacturing the component (14), the manufacturing parameters are calculated back to manufacturing coordinates. The invention also relates to a device (10) for carrying out the method (12) for manufacturing the component (14).
G05B 19/408 - Commande numérique (CN), c.à d. machines fonctionnant automatiquement, en particulier machines-outils, p.ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'u caractérisée par le maniement de données ou le format de données, p.ex. lecture, mise en mémoire tampon ou conversion de données
G05B 19/4093 - 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'u caractérisée par la programmation de pièce, p.ex. introduction d'une information géométrique dérivée d'un dessin technique, combinaison de cette information avec l'information d'usinage et de matériau pour obtenir une information de commande, appelée
G05B 19/41 - 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'u caractérisée par l'interpolation, p.ex. par le calcul de points intermédiaires entre les points extrêmes programmés pour définir le parcours à suivre et la vitesse du déplacement le long de ce parcours
B29C 64/386 - Acquisition ou traitement de données pour la fabrication additive
12.
TRANSPARENT COMPONENT WITH A FUNCTIONALISED SURFACE
The invention relates to a transparent component (1) with a functionalised surface, wherein the surface has dimples (2) and is thereby functionalised, wherein the functionalisation of the surface is an anti-glare functionalisation and the fill area of dimples is between 20% and 95%.
C03C 23/00 - Autres traitements de surface du verre, autre que sous forme de fibres ou de filaments
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
13.
CALIBRATING MULTIPLE LASER BEAMS FOR ADDITIVE MANUFACTURING
TRUMPF Additive Manufacturing Italia s.r.l. (Italie)
Inventeur(s)
Cavalcabo, Guglielmo
Blickle, Valentin
Sailer, Christof
Krauter, Johann
Mantoan, Elia
Abrégé
A method of automated alignment of scanning optics includes the steps of irradiating an object area of a layer of a powdered material provided on a building platform with at least one irradiation beam and irradiating a calibration area of the layer with at least one irradiation beam. A first irradiation beam is guided with a first scanning optic over an intermediate top face thereby melting a first calibration pattern into the intermediate top face and a second irradiation beam is guided with a second scanning optic over the intermediate top face thereby melting a second calibration pattern into the intermediate top face. At least one image is acquired of the intermediate top face and image points related to the geometrical features of the calibration patterns are identified so that a spatial offset between the geometrical features can be derived. Based on the spatial offset, the scanning optics are aligned.
B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
B33Y 40/00 - Opérations ou équipements auxiliaires, p.ex. pour la manipulation de matériau
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
14.
MANUFACTURING DEVICE AND METHOD FOR THE ADDITIVE MANUFACTURING OF COMPONENTS FROM A POWDER MATERIAL AND METHOD FOR DETERMINING A CORRECTION FUNCTION FOR A MANUFACTURING DEVICE OF THIS TYPE OR A METHOD OF THIS TYPE
The invention relates to a manufacturing device (1) for the additive manufacturing of components (3) from a powder material, comprising: - a beam-generating device (5), which is designed to generate an energy beam (7) having a beam profile (8) which is not rotationally symmetrically about a beam axis (A) of the energy beam (7); - a beam-rotating device (15), which is designed to rotate the beam profile (8) of the energy beam (7) about the beam axis (A); - a scanner device (9), which is designed to move the energy beam (7) in a working region (11) and to irradiate the working region (11) locally selectively with the energy beam (7) in order to produce, by means of the energy beam (7), a component (3) from the powder material located in the working region (11); and - a control device (19), which is operatively connected to the beam-rotating device (15) and to the scanner device (9) and is designed to control the beam-rotating device (15) and the scanner device (9); wherein the control device (19) is designed to correct control of the scanner device (9) according to a current angle of rotation of the beam-rotating device (15).
B23K 26/073 - Détermination de la configuration du spot laser
15.
MEASURING DEVICE, MANUFACTURING DEVICE COMPRISING SUCH A MEASURING DEVICE, AND METHOD FOR OPERATING A MANUFACTURING DEVICE FOR GENERATIVE MANUFACTURING OF A COMPONENT PART FROM A POWDER MATERIAL
A measuring device for aligning a blueprint coordinate system with a build level coordinate system of a working region of a generative manufacturing device arranged in a build level includes a first sensor device configured to cover a first coverage region of the working region with a first measurement accuracy, a selection module configured to select at least one region of interest within the first coverage region, a second sensor device configured to cover the at least one selected region of interest with a second measurement accuracy, the second measurement accuracy being higher than the first measurement accuracy, and an alignment module configured to determine at least one alignment of the blueprint coordinate system relative to the build level coordinate system, including an angle alignment and/or a translation alignment, based on the covered region of interest.
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p.ex. par frittage ou fusion laser sélectif
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
16.
SYSTEM FOR PROCESSING A MATERIAL BY MEANS OF ULTRASHORT LASER PULSES
A system includes an ultrashort pulse laser for providing a laser beam, a hollow core fiber, an input coupling optical unit configured to input couple the laser beam into the hollow core fiber, a lens device on which an output coupled laser beam from the hollow core fiber is incident, a beam shaping element on which the laser beam emerging from the lens device is incident, and a focusing optical unit. The lens device is configured to adjust a divergence angle of the output coupled laser beam for adjusting a beam diameter of the laser beam on the beam shaping element. The beam shaping element is configured to impose upon the laser beam a quasi-non-diffractive beam shape with a focal zone that is elongated in the beam propagation direction. The focusing optical unit is configured to set a penetration depth of the focal zone in or on the material.
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
17.
DEVICE AND METHOD FOR ADDITIVE MANUFACTURING WITH FRESH-WATER-FREE EMERGENCY COOLING
With reference to the drawing, the invention relates in summary to an emergency cooling system (14) for a device (10), in particular in the form of a device for additive manufacturing by means of laser metal fusion. The device (10) comprises a temperature-critical component (22a) and optionally at least one further temperature-critical component (22b-d), which are disposed both on a main cooling system (12) and on an emergency cooling system (14) in order to be actively cooled by a cooling medium. The emergency cooling system (14) comprises an emergency pump (18) and a machine frame (46), which is disposed at least in portions on an emergency cooling circuit (42) and in particular also on a main cooling circuit (40). The machine frame (46) provides the mechanically necessary stability of the device (10) and, in a synergy effect, also functions as a cooling heat sink. The invention also relates to a method (54) for operating the device (10), in which a cooling medium is guided in the emergency cooling circuit (42) through the machine frame (46).
A method for producing bipolar plates for production of fuel cells includes uncoiling a first sheet metal foil from a first sheet metal foil coil, and uncoiling a second sheet metal foil from a second sheet metal foil coil, forming the first sheet metal foil and the second sheet metal foil, allocating the first sheet metal foil and the second sheet metal foil based on formed structures of the first sheet metal foil and the second sheet metal foil, and laser welding the first sheet metal foil and the second sheet metal foil transversely to a feed direction of the first sheet metal foil and the second sheet metal foil in a first joining station. The first joining station mutually compresses the first sheet metal foil and the second sheet metal foil. The method further includes removing bipolar plates from the first sheet metal foil and second sheet metal foil.
A combination device includes at least two inputs and one or more outputs. Each input is for entry of a respective input beam. Each output is for exit of a respective output beam. The combination device is configured to form the respective output beam through a coherent combination of two input beams. The combination device is configured to set a polarization direction of the respective output beam based on a relative phase position of individual phases of the two input beams from which the respective output beam is formed through the coherent combination.
A superposition device includes four inputs, each respective input for entry of a respective one of four input beams, an output for exit of an output beam, a first combination device for coherent combination of a first input beam and a second input beam to form a first superposition beam, a second combination device for coherent combination of a third input beam and a fourth input beam to form a second superposition beam, and a third combination device for forming the output beam by coherent combination of the first superposition beam and the second superposition beam. The superposition device is configured to set both a polarization direction and a power of the output beam independently of one another based on relative phase positions of individual phases of the four input beams fed to the four inputs in relation to one another.
A method for welding bar-type conductors includes arranging at least two bar-type conductors in partially overlapping fashion, and welding the at least two bar-type conductors to one another by using a processing laser beam. The processing laser beam traverses a welding contour relative to the bar-type conductors. The traversing of the welding contour includes an initial phase, a main phase and an end phase. In the initial phase, in a partial region of a beam cross section of the processing laser beam, an intensity of the processing laser beam, which is spatially averaged over the partial region, is increased over time. In the main phase, the spatially averaged intensity, which is achieved at the end of the initial phase, is kept at least substantially constant over time. In the end phase, the spatially averaged intensity, starting from the intensity at the end of the main phase, is reduced over time.
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/244 - Soudage de joints du type à recouvrement
B23K 26/073 - Détermination de la configuration du spot laser
H02K 15/04 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques d'enroulements, avant leur montage dans les machines
22.
OPTICAL ASSEMBLY FOR CONVERTING AN INPUT LASER BEAM INTO A LINEAR OUTPUT BEAM
The invention relates to an optical assembly (30) for converting an input laser beam (20) into an output beam (44), which propagates along a propagation direction (z) and which, in a working plane (48), has a beam cross-section with non-vanishing intensity that is extended along a first direction (y) and extends along a second direction (x) perpendicular to the first direction (y) and to the propagation direction (z). The invention also relates to a laser system (10) for generating radiation with an intensity distribution (L) that has a homogenised intensity profile in the beam cross-section.
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
B23K 26/073 - Détermination de la configuration du spot laser
23.
BEAM-GUIDING DEVICE FOR GUIDING AN ENERGY BEAM AND MANUFACTURING DEVICE FOR ADDITIVELY MANUFACTURING COMPONENTS FROM A POWDER MATERIAL AND HAVING SUCH A BEAM-GUIDING DEVICE
The invention relates to a beam-guiding device (13) for guiding an energy beam (7) along a beam path (19), with at least one first beam-deflecting element (21), which can be moved between a first functional position and a second functional position, wherein the first beam-deflecting element (21) in the first functional position is arranged at a deflecting position (15) in the beam path (19) and is set up to deflect the energy beam (7) onto a target beam axis (A), and in the second functional position to allow the energy beam (7) to propagate further along the beam path (19), and with a plurality of second beam-deflecting elements (23), which in at least one functional state of the beam-guiding device (13) are arranged in the beam path (19) and are set up so that the energy beam (7) coming from the deflecting position (15) in the second functional position of the first beam-deflecting element (21) is thereby guided along the beam path (19) back to the deflecting position (15) and onto the target beam axis (A).
A method for laser welding includes arranging two bar-type conductors next to one another with a partial overlap, and welding the two bar-type conductors to one another using a processing laser beam. A weld bead is formed on a common base surface of the bar-type conductors. During the welding, the processing laser beam is guided so that a welding contour is placed relative to the bar-type conductors. An advancing rate of the processing laser beam along the welding contour is selected such that the weld bead has a non-liquid oxide skin inside which liquid bar-type conductor material accumulates. The non-liquid oxide skin is partially broken open by the processing laser beam only on an upwardly facing end face of the weld bead, and remains undamaged in a surrounding region of the weld bead that extends downward from the upwardly facing end face and around the entire weld bead.
An apparatus for laser machining a workpiece in a machining plane includes a first laser machining unit for forming a first focal zone which extends in a first main direction of extent, and at least one further laser machining unit for forming at least one further focal zone which extends in a further main direction of extent oriented transversely to the first main direction of extent. The first focal zone and the at least one further focal zone are spaced apart from one another parallel to the machining plane at a work distance. The first laser machining unit and the at least one further laser machining unit are movable in an advancement direction that is oriented parallel to the machining plane. The workpiece comprises a material that is transparent to a laser beam which respectively forms the first focal zone and the at least one further focal zone.
An apparatus for laser machining a workpiece with a material transparent to the laser machining includes a first beam shaping device with a beam splitting element for splitting a first input beam into a plurality of component beams, and a focusing optical unit configured to image the plurality of component beams into at least one focal zone. The first input beam is split by the beam splitting element by phase imposition on the first input beam. The component beams are focused into different partial regions of the at least one focal zone for forming the at least one focal zone. The at least one focal zone is introduced by the focusing optical unit into the material for laser machining the workpiece. Material modifications associated with a crack formation in the material are produced in the material by exposing the material to the at least one focal zone.
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
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
C03B 33/02 - Découpe ou fendage des feuilles de verre; Dispositifs ou machines à cet effet
27.
APPARATUS AND METHOD FOR LASER MACHINING A WORKPIECE
An apparatus for laser machining a workpiece includes a first beam shaping device comprising a beam splitting element for splitting a first input beam into a plurality of component beams, and a focusing optical unit configured to image the component beams into at least one focal zone. The first input beam is split by the beam splitting element by phase imposition on the first input beam. The component beams are focused into different partial regions of the at least one focal zone for forming the at least one focal zone. The at least one focal zone is introduced into the material at a work angle with respect to an outer side of the workpiece for the laser machining of the workpiece. Material modifications associated with a change of a refractive index of the material are produced in the material by exposing the material to the at least one focal zone.
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/359 - Travail par rayon laser, p.ex. soudage, découpage ou perçage pour le traitement de surface en formant une ligne ou un motif linéaire, p.ex. une ligne en pointillés d'amorce de rupture
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
28.
METHOD AND PLANNING DEVICE FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORKING AREA WITH A PLURALITY OF ENERGY BEAMS, METHOD AND MANUFACTURING DEVICE FOR THE ADDITIVE MANUFACTURING OF A COMPONENT FROM A POWDER MATERIAL, AND COMPUTER PROGRAM FOR CARRYING OUT SUCH A METHOD
The invention relates to a method for planning a locally selective irradiation of a working area (15) with a plurality of energy beams (11), in order by means of the energy beams (11) to manufacture a component (3) layer by layer from a plurality of layers of a powder material (5) arranged one after the other at successive times in a sequence of layers in the working area (15), wherein - a first displacement of a first irradiation section (19.1) for a first energy beam (11.1) of the plurality of energy beams (11) along a first irradiation area (21.1) on the working area (15) from a first starting position (23.1) to a first end position (25.1) within the first irradiation area (21.1) and - a second displacement of a second irradiation section (19.2) for a second energy beam (11.2) of the plurality of energy beams (11) in a second irradiation area (21.2) on the working area (15) from a second starting position (23.2) to a second end position (25.2) within the second irradiation area (21.2) - are coordinated with one another in such a way that • an irradiation of the second irradiation area (21.2) with the second energy beam (11.2) only begins when the first irradiation section (19.1) and the second starting position (23.2) for the second irradiation section (19.2) are not arranged relative to one another within an interaction zone (27), and that • a beginning of irradiation in the second irradiation section (19.2) is timed to be coordinated with a beginning of irradiation in the first irradiation section (19.1), wherein - an irradiation plan for the locally selective irradiation of the working area (15) with the energy beams (11) is obtained or amended.
The invention relates to a method for planning the local solidification of a layer of powder material with a when manufacturing a three-dimensional object layer by layer, the method comprising the following steps: step a): in a connected area (18(I)) of the layer (7) to be solidified, at least one inskin area (15(II)) and at least one downskin area (14(II)) is determined; step b): an inskin pattern (21) comprising inskin vectors (1', 3', 4', 6', 7', 9', 10', 12', 13') is defined for each inskin area (15(II)), and a downskin pattern (22) comprising downskin vectors (2', 5', 8', 11', 14') is defined for each downskin area (14(II)), the inskin pattern (21) being defined independently of the definition of the downskin pattern (22); step c): a processing sequence of all inskin vectors (1', 3', 4', 6', 7', 9', 10', 12', 13') and downskin vectors (2', 5', 8', 11', 14') is defined; the method is characterised in that in step c), a plurality of inskin vector blocks (23a, 23b), each comprising one or more inskin vectors (1', 3', 4', 6', 7', 9', 10', 12', 13') to be successively processed, and a plurality of downskin vector blocks (24a, 24b), each comprising one or more downskin vectors (2', 5', 8', 11', 14') to be successively processed, are defined, and a vector-block sequence for processing the inskin vector blocks (23a, 23b) and the downskin vector blocks (24a, 24b) is defined, in which vector-block sequence inskin vector blocks (23a, 23b) and downskin vector blocks (24a, 24b) alternate. This invention allows for high-quality, accelerated exposure of connected downskin areas (14(II)) and inskin areas (15(II)) to be performed while avoiding overheating of these areas.
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 10/366 - Paramètres de balayage, p.ex. distance d’éclosion ou stratégie de balayage
B22F 10/38 - Commande ou régulation des opérations pour obtenir des caractéristiques spécifiques du produit, p.ex. le lissage de la surface, la densité, la porosité ou des structures creuses
A method for separating a workpiece includes removing material of the workpiece along a separation line by using a laser beam comprising ultrashort laser pulses of an ultrashort pulse laser. The material of the workpiece is transparent to a wavelength of the laser beam, and has a refractive index between 2.0 and 3.5. The method further includes separating the workpiece along a notch formed by the removal of the material.
B23K 26/38 - Enlèvement de matière par perçage ou découpage
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
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. (Allemagne)
Trumpf Laser- und Systemtechnik Gmbh (Allemagne)
Inventeur(s)
Blothe, Markus
Chambonneau, Maxime
Nolte, Stefan
Kumkar, Malte
Abrégé
The invention relates to a method for dividing a transparent workpiece (1) by means of pulsed laser radiation (2) by way of creating a beam convergence zone (3) in the volume of the workpiece, in which the intensity of the laser radiation (2) exceeds a threshold value for non-linear absorption, wherein the beam convergence zone (3) and the workpiece (1) are moved relative to each other, thereby creating a two-dimensional weakening in the workpiece (1) extending along a predetermined separating line (4), and wherein the workpiece (1) is subsequently divided along the separating line (4). The invention proposes that by selecting the duration of the energy input generated by the non-linear absorption of the pulsed laser radiation and by spatial beam shaping, non-linear propagation of the laser radiation (2) in the volume (1) of the workpiece outside the beam convergence zone (3) is suppressed.
H01L 21/78 - Fabrication ou traitement de dispositifs consistant en une pluralité de composants à l'état solide ou de circuits intégrés formés dans ou sur un substrat commun avec une division ultérieure du substrat en plusieurs dispositifs individuels
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
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
H01L 21/268 - Bombardement par des radiations ondulatoires ou corpusculaires par des radiations d'énergie élevée les radiations étant électromagnétiques, p.ex. des rayons laser
A method for separating a workpiece includes providing ultrashort laser pulses using an ultrashort pulse laser, and introducing material modifications into the workpiece along a separation line using the ultrashort laser pulses. The workpiece includes a transparent material. The method further includes separating the material of the workpiece along the separation line. The laser pulses form a laser beam that is incident onto the workpiece at a work angle. An optical aberration of the laser pulses during a transition into the material of the workpiece is reduced by an aberration correction device. The laser beam has a non-radially symmetric transverse intensity distribution, with the transverse intensity distribution appearing elongate in a direction of a first axis in comparison with a second axis perpendicular to the first axis.
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 26/53 - 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
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
33.
APPARATUS AND METHOD FOR LASER MACHINING A WORKPIECE
An apparatus for laser machining a workpiece includes a beam shaping device for forming a focal zone from an input laser beam incident on the beam shaping device, and a telescope device for imaging the focal zone into a material of the workpiece. The beam shaping device is configured to impose a phase on a beam cross section of the input laser beam in such a way that the focal zone extends along a longitudinal centre axis which is curved at least in certain portions. The telescope device is assigned a beam splitting device for splitting an output laser beam output coupled from the beam shaping device into a plurality of polarized partial beams, each of which has one of at least two different polarization states. The focal zone has an asymmetrical cross section in a plane oriented perpendicular to the longitudinal centre axis.
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. 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 26/064 - 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
The invention relates to a measuring device (10) for measuring a laser line beam (1) generated by a laser system (100), the measuring device (10) having: a process chamber (20) which has an entrance region (22) for entry of the laser line beam (1) into the process chamber (20), a beam profile measurement apparatus (30) which is arranged in the process chamber (20) and is designed to measure the laser line beam (1) entering the entrance region (22), and a trim device (60) for trimming the laser line beam (1) before entry into the process chamber (20). The trim device (60) has a plurality of at least three individual mirrors (64), which can be moved by at least one drive, for trimming the laser line beam (1) before entry into the process chamber (20), wherein the individual mirrors (64) can be moved at least in some regions in at least one movement direction (3) relative to a linear extent of the laser line beam (1) specified by the measuring device (10).
The invention relates to a method for operating a system (1) for the layered manufacturing of at least one object on a base element (13) by locally compacting pulverulent material (5) in a respective layer using a work laser (17), comprising the following steps: Step A) The base element (13) is arranged on a movable piston plate (12), Step B) A preliminary measurement is carried out in the system (1), a measurement pattern (24) on the upper side (23) of the base element (13) being measured using a measuring device (26), step C) based on data from the preliminary measurement, the layered manufacturing of the at least one object on the base element (13) is prepared and carried out, characterized in that, after step A) and before step B), a step A') takes place in which a surface (22) of the base element (13) facing the work laser (17) is roughened in a treatment area (21) of the base element (13) using the work laser (17) in the system (1), the treatment area (21) comprising at least part of the upper face (23) of the base element (13), and is further characterized in that, in step B), the measurement pattern (24) to be measured - comprises a light pattern (24a) which is projected at least partially into the roughened treatment area (21) onto the upper face (23) of the base element (13), and/or - comprises a base element (13) edge structure (24b) on the upper face (23) of the base element (13), the edge structure having a plurality of edges (29) and at least some of the edges (29) of the edge structure (24b) being situated in the roughened treatment area (21). The invention provides a method by means of which improved contrast during the preliminary measurements can be obtained in a simple manner.
B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
36.
METHOD FOR MEASURING A BUILD PLATFORM OF A GENERATIVE MANUFACTURING DEVICE, CONTROL DEVICE FOR CARRYING OUT SUCH A METHOD, GENERATIVE MANUFACTURING DEVICE HAVING SUCH A CONTROL DEVICE, METHOD FOR THE GENERATIVE MANUFACTURING OF A COMPONENT, AND COMPUTER PROGRAM PRODUCT
The invention relates to a method for measuring a build platform (3) of a generative manufacturing device (1), comprising the following steps: - creating a first recording of the build platform (3) in a first state by means of a powder bed sensor (7) or by means of a sensor (19) for detecting remitted light (21) of an energy beam (11) in the generative manufacturing device (1); - detecting, in each case, a first marking position of at least two markings of the build platform (3) in the first recording; - comparing the first marking positions in the first state with allocated second marking positions of the same markings in a second state of the build platform (3) by means of a mathematical calculation rule, and - obtaining, from the comparison, a deviation of the first marking positions from the allocated second marking positions.
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'u 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 for separating a workpiece having a transparent material includes providing ultrashort laser pulses using an ultrashort pulse laser, introducing material modifications into the transparent material of the workpiece along a separation line, and separating the material of the workpiece along the separation line. The laser pulses form a laser beam that is incident onto the workpiece at a work angle. The material modifications are Type III modifications associated with a formation of cracks in the material of the workpiece. The material modifications penetrate two sides of the workpiece that are located in intersecting planes. Separating the material of the workpiece produces a chamfer and/or a bevel. A length of a hypotenuse of the chamfer and/or bevel is between 50 μm and 5000 μm.
B23K 26/40 - Enlèvement de matière en tenant compte des propriétés du matériau à enlever
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 26/38 - Enlèvement de matière par perçage ou découpage
The invention relates to a method for separating a workpiece (104) which has a transparent material (102). Multiple focal elements (120) are provided by means of an inlet laser beam (108), and the focal elements (120) are applied to the material (102). By applying the focal elements (120) to the material (102), material modifications (138) are produced in the material (102) along a specified machining line (128), and the material (102) is separated along the machining line (128) using an etching method with a wet-chemical solution, wherein the temperature of the wet-chemical solution during the etching method equals at least 100 °C and/or maximally 150 °C.
The present invention relates to a laser system for laser cladding, comprising: a laser source for producing a laser beam (30) having a wavelength in the range between 0.4 µm and 1.5 µm; and a jet nozzle for directing the laser beam (30) at a workpiece surface (12) and for directing a powder jet comprising a pulverulent material (20) at the laser beam (30) and at the workpiece surface (12); wherein the laser beam (30) exiting from the jet nozzle has a reduced intensity in a core region (314) in comparison with an edge region (312a, 312b, 312c), and wherein the pulverulent material (20) comprises hard-material particles. The invention also relates to a method for laser cladding and to a component which can be manufactured by means of the method.
B23K 26/00 - Travail par rayon laser, p.ex. soudage, découpage ou perçage
B23K 26/144 - 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 laser; Buses à cet effet l'écoulement de fluide contenant des particules, p.ex. de la poudre
B23K 26/323 - Assemblage tenant compte des propriétés du matériau concerné faisant intervenir des parties faites de matériaux métalliques dissemblables
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
B22F 10/25 - Dépôt direct de particules métalliques, p.ex. dépôt direct de métal [DMD] ou mise en forme par laser [LENS]
B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
B33Y 80/00 - Produits obtenus par fabrication additive
C23C 24/10 - Revêtement à partir de poudres inorganiques en utilisant la chaleur ou une pression et la chaleur avec formation d'une phase liquide intermédiaire dans la couche
A method for separating a workpiece having a transparent material includes providing ultrashort laser pulses using an ultrashort pulse laser, introducing material modifications into the transparent material of the workpiece along a separation line using the laser pulses, and separating the material of the workpiece along the separation line. The laser pulses form a laser beam that is incident onto the workpiece at a work angle. The material modifications are Type I and/or Type II modifications associated with a change in a refractive index of the material of the workpiece. The material modifications penetrate two sides of the workpiece that are located in intersecting planes. Separating the material of the workpiece produces a chamfer and/or a bevel. A length of a hypotenuse of the chamfer and/or bevel is between 50 μm and 500 μm.
B23K 26/40 - Enlèvement de matière en tenant compte des propriétés du matériau à enlever
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 26/53 - 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
B23K 26/38 - Enlèvement de matière par perçage ou découpage
41.
OPTICAL ASSEMBLY FOR CONVERTING AN INPUT LASER BEAM INTO A LINEAR OUTPUT BEAM WITH INCREASED HOMOGENEITY IN THE INTENSITY CURVE
The invention relates to an optical assembly (20) for converting an input laser beam (18) into a linear output beam (12) having an intensity distribution with increased homogeneity. The invention also relates to a laser system (10) for generating a linear output beam (12) having such an intensity distribution, said laser system comprising such an optical assembly (20), and to a method for controlling a displacement device (54) on one of two lens arrays (38, 40) in an optical assembly (20).
G02B 27/09 - Mise en forme du faisceau, p.ex. changement de la section transversale, non prévue ailleurs
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
G02B 27/48 - Systèmes optiques utilisant la granulation produite par laser
42.
DEVICE FOR GENERATING A DEFINED LASER LINE ON A WORKING PLANE
The invention relates to a device (10) for generating a defined laser line on a working plane (24), having multiple laser light sources (12a, 12b), each of which is designed to generate a laser beam bundle (16a, 16b, 16c) with a defined divergence. The laser beam bundles (16a, 16b, 16c ) define a beam direction (z) which intersects the working plane (30) and are designed to overlap in front of the working plane (30) at a first distance (A) thereto, and the laser beam bundles (16a, 16b, 16c) have a beam profile in the region of the working plane (30), said beam profile having a long axis (LA) with a long axis beam width and a short axis (SA) with a short axis beam width perpendicularly to the beam direction (z). The device (10) additionally has a first optical assembly (14) which is designed to generate a defined beam profile in the short axis (SA) on the working plane (30). The device (10) is characterized in that it additionally comprises a second optical assembly (18) which has multiple separate second sub-units (18a, 18b, 18c) which are designed to generate a beam profile with a homogenous angle in the long axis (LA) on the working plane (30).
The invention relates to a method for producing at least one object (2) on a building platform (6) in layers by locally solidifying pulverulent material (3) in a layer (7), wherein: at least in a plurality of the layers, N high-energy beams (8a, 8b) are at least temporarily used simultaneously with N scanners, where N ≥ 2; each scanner is assigned a scanner coordinate system; a control device (10) for an exposure of a layer for each scanner - provides (102) exposure data of a machining pattern in a reference coordinate system, - converts (103) the exposure data in the reference coordinate system into exposure data in the scanner coordinate system by means of a programmed coordinate transformation (PKT) and - directs (104) the obtained exposure data in the scanner coordinate system to the associated scanner so that the scanner exposes (105) the machining pattern on the building platform in the layer; while producing the at least one object in layers, measurements are repeatedly taken, by means of each of which the current actual coordinate transformations (MTKT) of at least N-1 scanners are determined; between two successive determinations of the current actual coordinate transformations, M layers are produced, where M ≥ 2; and, while producing the at least one object, the programmed coordinate transformations for the at least N-1 scanners are updated taking into account the current actual coordinate transformations (205.1, 205.j, 205.A; 305.1, 305.j, 305.A). The invention is characterised in that a plurality of updates of the programmed coordinate transformations of the at least N-1 scanners are performed between two successive determinations (201, 206; 301, 306) of the current actual coordinate transformations. The invention provides a method which makes it possible to produce the at least one object on the building platform in layers so that the object is high-quality while minimising non-productive time.
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
44.
SUCTION DEVICE FOR SUCKING UP PROCESS GAS WITH A STATIONARY GAS-CONVEYING CHANNEL AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS COMPRISING SUCH A SUCTION DEVICE
The invention relates to a suction device for sucking up process gas from a process chamber (16) of a device (11) for producing three-dimensional objects by selective solidification of a build-up material, applied in layers, by means of a beam (27) acting on the build-up material, comprising °a suction module (41) movable in translation; °a gas-conveying channel (74) arranged in a stationary manner and having a slot (72); °a connection module (70), which is connected to the suction module (41), is movable in the slot (72) of the gas-conveying channel (74), and fluidically connects the suction module (41) to the gas-conveying channel (74).
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 10/322 - Commande ou régulation des opérations de l’atmosphère, p.ex. de la composition ou de la pression dans une chambre de fabrication d’un écoulement de gaz, p.ex. du débit ou de la direction
B29C 64/371 - Conditionnement de l’environnement en utilisant un environnement autre que l’air, p.ex. un gaz inerte
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p.ex. par frittage ou fusion laser sélectif
A method for material processing of a workpiece includes radiating a pulsed raw laser beam into an optical beam shaping system in order to form a quasi-non-diffractive laser beam with a focal zone extending in a longitudinal direction for the material processing of the workpiece. The optical beam shaping system is configured to impose a phase onto a beam cross section of the raw laser beam for forming phase-imposed laser radiation. The method further includes focusing the phase-imposed laser radiation into the workpiece so that the quasi-non-diffractive laser beam is formed and the focal zone has an intensity distribution that is adjustable along the longitudinal direction. The phase imposed on the beam cross section of the raw laser beam is set so that the intensity distribution of the quasi-non-diffractive laser beam in the focal zone is at least approximately constant in the longitudinal direction.
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 26/402 - Enlèvement de matière en tenant compte des propriétés du matériau à enlever en faisant intervenir des matériaux non métalliques, p.ex. des isolants
46.
METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS BY SELECTIVELY SOLIDIFYING A BUILD MATERIAL APPLIED LAYER BY LAYER
A method for producing a three-dimensional object by selectively solidifying a build material applied layer by layer includes, in at least one process chamber, applying the build material layer by layer to a build platform, generating at least one beam for solidifying the build material using a radiation source, feeding the at least one beam to the build material in the build platform using at least one beam guiding element, and generating a primary gas flow along the build platform using a process assistance device. The process assistance device includes a centre module and at least one outer module aligned with the centre module, so that a section over which primary gas flows is formed between the centre module and the at least one outer module. The centre module and/or the at least one outer module are triggered so as to be movable along the build platform.
A method for severing an at least partially transparent material includes focusing ultrashort laser pulses, as individual laser pulses and/or as pulse trains, in the material so that a resulting modification zone elongated in a beam propagation direction enters the material and penetrates at least one surface of the material. Each pulse train comprises multiple sub-laser pulses, The method further includes introducing a plurality of material modifications along a severing line into the material via the laser pulses, and severing the material along the severing line, A pulse energy of the individual laser pulses or a sum of pulse energies of the sub-laser pulses is in a range from 500 μJ to 50 mJ. A length of the modification zone in the beam propagation direction is greater than a thickness of the material.
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
C03B 33/08 - Sectionnement du verre refroidi par fusion
48.
DEVICE FOR GENERATING A DEFINED LASER ILLUMINATION ON A WORK PLANE
A device includes a laser light source configured to generate a raw laser beam, and an optical arrangement configured to shape the raw laser beam into an illumination beam. The optical arrangement includes a beam transformer with an exit aperture, a first group of optical elements and a second group of optical elements for beam shaping. The beam transformer is configured to expand the raw laser beam in the direction of a long axis. The first group of optical elements comprises a homogenizer configured to homogenize the expanded raw laser beam. The second group of optical elements comprises at least one lens configured to image the exit aperture of the beam transformer. The first group of optical elements generates an intermediate image. The device further includes an imaging optical unit configured to image the intermediate image into the work plane.
The invention relates to a device for generating a defined laser line (12) on a working plane (14), said device comprising a laser light source (22), which is designed to generate a laser raw beam (24), and an optical arrangement (26) which receives the laser raw beam (24) and converts it along an optical axis (46) to an illumination beam (28). The illumination beam (28) defines a beam direction (29) which intersects the working plane (14) and has, in the region of the working plane (14), a beam profile (18) which has, perpendicular to the beam direction (29), a long axis having a long-axis beam width and a short axis having a short-axis beam width. The beam profile (18) can be moved relative to the working plane (14) along a movement direction (20) in order to machine a workpiece (16) with the aid of the illumination beam (28). The beam profile (18) has a defined intensity profile over the short-axis beam width, said intensity profile having a flank (48) leading in the direction of movement (20), a flank (50) trailing in the direction of movement (20) and a plateau (52) lying between the leading flank (48) and the trailing flank (50). The plateau (52) in the region of the leading flank (48) has a different intensity level than in the region of the trailing flank (50). The optical arrangement (26) furthermore has a beam transformer (30) which is designed to divide the laser raw beam (24) into a plurality of beam segments (36a, 36b) which are arranged next to one another in the long axis. In addition, the optical arrangement (26) has an optical element (56; 58) which is designed to selectively influence selected beam segments (36a, 36b).
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/066 - 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 par utilisation de masques
G02B 27/09 - Mise en forme du faisceau, p.ex. changement de la section transversale, non prévue ailleurs
A device (10) for mounting a large optical unit (50) comprises a carrier plate (12) and a rigid mounting face (14a) which is arranged on the carrier plate (12) and configured to mount a base surface (52) of the large optical unit (50) in a predetermined position and orientation. The rigid mounting face (14a) is also configured to mount the large optical unit (50) at a Bessel point (BP1) of the large optical unit (50). The device (10) also comprises an elastic mounting face (16a) which is arranged on the carrier plate (12) and configured to elastically mount the base surface (52) of the large optical unit (50).
The present invention relates to a line optical system (10) for generating a defined laser line (24) on a working plane (26), said line optical system comprising: at least one laser light source (12) for generating at least one laser beam (20); an optical assembly (14) which is designed to generate an illumination beam (22) along a beam path from the at least one laser beam (20), the illumination beam (22) defining a beam direction which intersects the working plane (26), the illumination beam (22) forming the defined laser line (24) in the region of the working plane (26), the optical assembly (14) having, in the beam path, a focusing unit (18) having a focusing lens (28) for focusing the illumination beam (22), the focusing lens (28) being movable parallel to the beam direction; a camera system (36) which is designed to monitor the illumination beam (22) at a defined position downstream of the focusing lens (28), the illumination beam (22) having a focus state at the defined position; and a control device (44) which is designed to readjust a position of the focusing lens (28) parallel to the beam direction based on a change in focus state at the at least one defined position.
The invention relates to a line-generating optical system (10) for generating a defined laser line (24) on a working plane (26), comprising at least one laser light source (12) for generating at least one laser beam (20); an optical assembly (14) which is designed to generate an illumination beam (22) from the at least one laser beam (20) along a beam path, wherein the illumination beam (22) defines a beam direction which intersects the working plane (26), the illumination beam (22) forms the defined laser line (24) in the region of the working plane (26), the optical assembly (14) has a focusing unit (18) with a focusing lens (28) in the beam path for focusing the illumination beam (22), and the focusing lens (28) can move parallel to the beam direction; a camera system (36) which is designed to monitor the illumination beam (22) at at least three defined positions downstream of the focusing lens (28), said illumination beam (22) having a focus state at each of the at least three defined positions; and a controller (44) which is designed to determine the position of the focus of the focusing lens (28) on the basis of the focus states at the at least three defined positions and to control the position of the focusing lens (28) parallel to the beam direction such that the focus position is arranged on the working plane (26).
A method for separating an ultrathin glass using ultrashort laser pulses of an ultrashort pulse laser includes focusing the ultrashort laser pulses into the ultrathin glass such that a resulting focal zone is elongated in a beam direction and extends over an entire thickness of the ultrathin glass. The ultrashort laser pulses have a non-radially symmetric beam cross section perpendicular to a beam propagation direction. The method further includes introducing material modifications into the ultrathin glass along a separating line using the ultrashort laser pulses focused into the ultrathin glass, and separating the ultrathin glass along the separating line.
C03B 33/02 - Découpe ou fendage des feuilles de verre; Dispositifs ou machines à cet effet
C03B 33/04 - Découpe ou fendage courbe, spécialement pour la fabrication des verres de lunettes
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
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 26/073 - Détermination de la configuration du spot laser
B23K 26/00 - Travail par rayon laser, p.ex. soudage, découpage ou perçage
54.
ADDITIVE MANUFACTURING METHOD WITH REDUCTION OF SURFACE ROUGHNESS OF A SHAPED ARTICLE PRODUCED IN THE MANUFACTURING METHOD
A manufacturing method for the layer-by-layer additive manufacturing of a shaped article (10I), wherein a further layer (29a) is repeatedly added to a previous layer arrangement in the direction of a layer sequence, and in each case: VII. A new layer (22a) of a powder (17) is applied to the previous layer arrangement (13); VIII. In a melting area (23a) predetermined for the further layer (29a) and having a contour (25), the powder (17) of the new layer (22a) and at least part of the topmost layer of the previous layer arrangement (13) are melted with a first high-energy beam (24), in particular a laser beam or electron beam, is characterised in that in at least some of the further layers (29a), adding to the further layer (29a) further comprises: IX. A machining part (46) of the contour (25) is determined for the contour (25), and after step II, a second high-energy beam (31a), in particular a laser beam or electron beam, is moved along a line of travel which runs parallel to the machining part (46), as a result of which the further layer (29a) and at least part of the topmost layer of the previous layer arrangement (13) are melted along the line of travel, wherein the second high-energy beam (31a) has a second melt depth (33a) that is greater than the first melt depth (EST) of the first high-energy beam. The invention allows the surface roughness of the side faces of the shaped article to be reduced.
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 10/36 - Commande ou régulation des opérations des paramètres du faisceau d’énergie
B22F 10/364 - Commande ou régulation des opérations des paramètres du faisceau d’énergie pour le post-chauffage, p.ex. pour la refonte
B22F 10/366 - Paramètres de balayage, p.ex. distance d’éclosion ou stratégie de balayage
B22F 10/38 - Commande ou régulation des opérations pour obtenir des caractéristiques spécifiques du produit, p.ex. le lissage de la surface, la densité, la porosité ou des structures creuses
The invention relates to a laser deposition welding process for producing a coating layer (80) on a surface (74) of a component (70) by creating at least one coating track (86) with a predefined track width (B) on the surface (74) by applying an, in particular pulverulent, filler material (2) along a helix-shaped or spiral-shaped working trajectory (88), wherein the filler material (2) and the component (70) are heated along the working trajectory (88) by means of a laser beam (1) so that the at least one coating track (86) is formed when the filler material (2) impinges on the surface (74), wherein at least two, in particular at least three, turns (8) in the at least one coating track (86) at least partially overlap along a track width (B).
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
B23K 26/144 - 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 laser; Buses à cet effet l'écoulement de fluide contenant des particules, p.ex. de la poudre
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 laser; Buses à cet effet
A method for laser welding two workpieces includes arranging a first workpiece of a thickness D1 and a second workpiece of a thickness D2 on top of one another so that the first workpiece and the second workpiece overlap in a region of overlap. Each of D1 and D2 is 400 μm or less. The method further includes melting, using a laser beam guided along a weld seam, a material of the first workpiece over an entirety of the thickness D1 and a material of the second workpiece over only a partial thickness TD of the thickness D2 in the region of overlap, from a side of the first workpiece. The laser beam generates a vapor capillary that extends to a capillary depth KT into the first workpiece or into the first workpiece and the second workpiece, where 0.33*EST≤KT≤0.67*EST, with EST being a weld depth EST=D1+TD.
B23K 26/244 - Soudage de joints du type à recouvrement
B23K 26/082 - Systèmes de balayage, c. à d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
57.
METHOD FOR LASER WELDING A BIPOLAR PLATE FOR A FUEL CELL, WITH POWER-DENSITY DISTRIBUTION VARYING CYCLICALLY OVER TIME IN THE REGION OF THE MOLTEN POOL
A method for laser welding a bipolar plate (1) for a fuel cell, wherein two plate parts (1a, 1b) are welded to one another along at least one weld seam (2, 2a, 2b, 2c), wherein the laser welding is performed with a laser beam (5), wherein the laser beam (5) has, in a plane (E) of a surface (4) of the two plate parts (1a, 1b), a basic movement component (GBK) with a rate of advancement VS in a welding direction (SR) along a welding curve (8) in relation to the plate parts (1a, 1b), and the welding curve (8) runs along the weld seam (2, 2a, 2b, 2c), wherein the laser beam (5) produces a molten pool (7) in the plate parts (1a, 1b), and the laser beam (5) brings about a power-density distribution (LDV) of laser radiation in the plane (E) of the surface (4) of the two plate parts (1a, 1b) in the region of the molten pool (7), and wherein the laser beam (5) comprises one or more part-beams (11a, 11b), is characterized in that the power-density distribution (LDV) in the plane (E) of the surface (4) of the two plate parts (1a, 1b) is varied cyclically over time in the region of the molten pool (7). The invention provides a method by which low-defect weld seams with a high level of fluid impermeability can be produced on a bipolar plate at a high welding speed.
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/244 - Soudage de joints du type à recouvrement
58.
SUBSTRATE PLATE FOR AN INTERCHANGEABLE CONTAINER, INTERCHANGEABLE CONTAINER AND METHOD AND APPARATUS FOR UNPACKING A THREE-DIMENSIONAL OBJECT PRODUCED BY SELECTIVE SOLIDIFICATION OF A PULVERULENT BUILD MATERIAL ON A SUBSTRATE PLATE OR IN THE INTERCHANGEABLE CONTAINER
A substrate plate for an interchangeable container that can be inserted into an apparatus for layer-by-layer application and selective solidification of a pulverulent build material for producing a three-dimensional object is provided. The substrate plate includes a surface on which the three-dimensional object is built, and a connection interface situated opposite to the surface. A transmission element is capable of being connected to the connection interface. At least one actuator is capable of being connected in a force-fitting and/or form-fitting manner to the substrate plate or to the transmission element fastened to the substrate plate. The at least one actuator is capable of being excited to oscillate by a generator.
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additive; Moyens auxiliaires pour la fabrication additive; Combinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
CONTAINER ARRANGEMENT OF AN UNPACKING DEVICE FOR A MANUFACTURING DEVICE, UNPACKING DEVICE HAVING SUCH A CONTAINER ARRANGEMENT, AND MANUFACTURING DEVICE
A container arrangement of an unpacking device for a manufacturing device for additive manufacturing of a three-dimensional component is provided. The container arrangement includes a construction container with a construction chamber, and a collecting container that is releasably connected to the construction container and has a collecting chamber. The construction container has a container cover that, in the closed state, seals off the construction chamber and an inert atmosphere located therein from the surroundings. A collecting-container-side part of an interior of the container arrangement is provided inside the container arrangement. The container arrangement further includes an opening device that can be used, with the collecting-container-side part of the interior of the container arrangement being filled with an inert atmosphere, to open the closed container cover of the construction container and thereby to connect the construction chamber of the construction container to the collecting chamber of the collecting container.
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additive; Moyens auxiliaires pour la fabrication additive; Combinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p.ex. par frittage ou fusion laser sélectif
B29C 64/255 - Enceintes pour le matériau de construction, p.ex. récipients pour poudre
B29C 64/371 - Conditionnement de l’environnement en utilisant un environnement autre que l’air, p.ex. un gaz inerte
60.
METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS BY SELECTIVELY SOLIDIFYING A BUILD MATERIAL APPLIED LAYER BY LAYER
A method for producing a three-dimensional object includes applying a build material layer by layer to a build platform, generating at least one beam for solidifying the build material, feeding the at least one beam to the build material using at least one beam guiding element, and generating a primary gas flow along the build platform using a process assistance device. The process assistance device includes a centre module and at least one outer module aligned with the centre module, so that a section over which primary gas flows is formed between the centre module and the at least one outer module. The method further includes generating a secondary gas flow that is aligned onto and fed to the build platform using a feed device above the build platform, so that a section along which the secondary gas flows is created between the feed device and the process assistance device.
The invention relates to a laser deposition welding method for producing coating layers (80) on opposing surfaces (74) of a component (70) in that on each surface (74), an additive material (2), in particular a pulverulent additive material, is directed onto the respective surface (74) along a processing trajectory, in particular a spiral-shaped processing trajectory, wherein the additive material (2) and the component (70) are heated along the processing trajectory by means of a laser beam (1) such that the additive material (2) connects to the component (70) upon striking the respective surface (74), and the coating layers (80) are at least temporarily simultaneously produced on the opposing surfaces (74).
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
B23K 26/144 - 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 laser; Buses à cet effet l'écoulement de fluide contenant des particules, p.ex. de la poudre
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 laser; Buses à cet effet
A method for separating a workpiece along a separation line by using ultrashort laser pulses of a laser beam includes splitting the laser beam, using a beam splitter optical unit, into a plurality of partial laser beams. Each partial laser beam is focused by a focusing optical unit onto a surface and/or into a volume of the workpiece so that the partial laser beams are arranged next to one another and spaced apart from one another along the separation line. The method further includes implementing material ablation in the workpiece along the separation line by introducing the ultrashort laser pulses into the workpiece. The partial laser beams are repeatedly moved away from an initial position along the separation line by a deflection value and are subsequently moved back into the initial position. The deflection value is less than or equal to a distance between two adjacent partial laser beams.
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 26/364 - Gravure au laser pour faire une rainure ou une saignée, p.ex. pour tracer une rainure d'amorce de rupture
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
63.
METHOD FOR LASER DRILLING A DRILLED HOLE INTO A WORKPIECE AT FIRST AND SECOND MEAN BEAM INTENSITIES, AND CORRESPONDING LASER DRILLING DEVICE
The invention relates to a method for laser drilling a drilled hole into a workpiece (10), wherein at least one laser beam (20) is used for the laser drilling, wherein a laser beam cross section (30) of the at least one laser beam (20) has a central area (31) with a first laser beam profile (32) having a first mean beam intensity and an outer edge area (33), surrounding the central area (31), with a second laser beam profile (34) having a second mean beam intensity, wherein the second mean beam intensity is greater than the first mean beam intensity.
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 26/073 - Détermination de la configuration du spot laser
B23K 26/382 - Enlèvement de matière par perçage ou découpage par perçage
The invention relates to a method for the laser processing of a workpiece (102), which has a curved surface (104), in which method at least one focus element (122) is provided by means of an input laser beam (110), the surface (104) of the workpiece (102) is acted on by the at least one focus element (122) and the at least one focus element (122) is moved relative to the surface (104), wherein the at least one focus element (122) has an elongated shape parallel to a longitudinal central axis (145) of the at least one focus element (122), the longitudinal central axis (145) of the at least one focus element (122) is orientated transverse, and in particular perpendicular, to the surface (104) of the workpiece (102), and wherein a material (106) of the workpiece (102) is removed and/or modified on the surface (104) by means of the at least one focus element (122).
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. 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
B23K 26/352 - Travail par rayon laser, p.ex. soudage, découpage ou perçage pour le traitement de surface
B23K 26/364 - Gravure au laser pour faire une rainure ou une saignée, p.ex. pour tracer une rainure d'amorce de rupture
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
B21B 27/00 - Cylindres; Lubrification, refroidissement ou chauffage des cylindres en cours d'utilisation
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
B41C 1/05 - Têtes de gravure à génération de chaleur, p.ex. à faisceau laser, à faisceau d'électrons
A device for generating a laser line on a work plane includes a first laser light source configured to generate a first raw laser beam, a second laser light source configured to generate a second raw laser beam, and an optical arrangement configured to reshape the first raw laser beam to form a first illumination beam with a first caustic and a first beam profile, and reshape the second raw laser beam to form a second illumination beam with a second caustic and a second beam profile. The first illumination beam and the second illumination beam are directed with overlap on the work plane and define a joint illumination direction. The first beam profile and the second beam profile jointly form the laser line on the work plane. The optical arrangement is configured to position the first caustic and the second caustic offset from one another in the illumination direction.
PLANNING DEVICE AND METHOD FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORK REGION USING AN ENERGY BEAM, COMPUTER PROGRAM PRODUCT FOR CARRYING OUT SUCH A METHOD, MANUFACTURING DEVICE HAVING SUCH A PLANNING DEVICE, AND METHOD FOR THE ADDITIVE MANUFACTURE OF A COMPONENT FROM A POWDER MATERIAL
A planning device for planning locally selective irradiation of a work region using an energy beam in order to produce a component from a powder material arranged in the work region is provided. The planning device is configured to obtain a plurality of irradiation vectors for irradiating a powder material layer arranged in the work region with the energy beam. The planning device is further configured to determine a vector alignment in a coordinate system on the work region for at least one irradiation vector of the plurality of irradiation vectors, and to specify, for the at least one irradiation vector, a beam alignment for a non-circular beam shape of the energy beam on the work region relative to the vector alignment of the at least one irradiation vector.
The present invention relates to a method for the laser processing of a workpiece (102) which has a curved surface (104), in which a plurality of focus elements (122) spaced apart from one another are provided by means of an input laser beam (110), the surface (104) of the workpiece (102) is acted on by the focus elements (122), and the focus elements (122) are moved relative to the surface (104), wherein at least a subset of the focus elements (122) is arranged on the surface (104) in a manner spaced apart in a circumferential direction (140), along which the surface (140) is curved, and wherein a material (106) of the workpiece (102) is removed and/or modified at the surface (104) by means of the focus elements (122).
The invention relates a method for determining at least one geometric result value and/or at least one quality characteristic of a weld (3) on at least one workpiece (9), wherein the method comprises the following steps: a) scanning the weld (3) by means of a measuring beam (2) during laser-beam welding of the weld (3) for ascertaining data points, wherein the measuring beam (2) is moved along at least one measuring path on the weld (3) and the ascertained data points indicate a height and/or depth of the weld (3) with respect to a workpiece surface (10) of the at least one workpiece (9), and b) determining the at least one geometric result value and/or the at least one quality characteristic by evaluating the previously ascertained data points.
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 26/03 - Observation, p.ex. surveillance de la pièce à travailler
B23K 26/244 - Soudage de joints du type à recouvrement
B23K 26/26 - Soudage de joints continus rectilignes
69.
METHOD FOR LASER WELDING A FLOW FIELD PLATE OF A FUEL CELL, HAVING A WELD POOL PRODUCED USING A PLURALITY OF LASER SPOTS
The invention relates to a method for laser welding a flow field plate (1) for a fuel cell, two plate parts (1a, 1b) being welded to one another along at least one weld seam (2, 2a, 2b, 2c). According to the invention, the laser welding is carried out along the at least one weld seam (2, 2a, 2b, 2c) using a laser beam ensemble (34) comprising at least three individual beams (33), the individual beams (33) each producing a laser spot (5a-5e, 5a'-5c') on a surface (4) of the plate parts (1a, 1b), and in that the at least three individual beams (33) of the laser beam ensemble (34) produce a common weld pool (9) in the plate parts (1a, 1b). The invention provides a method which can achieve good fluid-tightness of weld seams of a flow field plate with high reliability.
The invention relates to a method for laser-beam welding multiple components (2, 3) at different processing locations of a component (1) by means of a laser-welding device (100), wherein the method comprises the following steps: (a) measuring a processing location of the multiple processing locations by means of a measuring beam (4) and/or by means of a sensor system, and (b) laser-beam welding a previously measured processing location of the multiple processing locations by means of a processing beam (5), wherein steps (a) and (b) are performed in parallel.
A method for stripping a rod-shaped conductor using laser radiation is provided. The rod-shaped conductor includes an electrically conductive core and a coating that is at least partially transparent to the laser radiation. The method includes traversing the conductor for a first time with at least one laser beam to at least partially reduce transparency of the coating, and traversing the conductor for a second time with the at least one laser beam to at least partially reduce adhesion of the coating.
B23K 26/38 - Enlèvement de matière par perçage ou découpage
B23K 26/402 - Enlèvement de matière en tenant compte des propriétés du matériau à enlever en faisant intervenir des matériaux non métalliques, p.ex. des isolants
72.
SCANNER WELDING APPARATUS AND METHOD FOR SCANNER WELDING AT LEAST TWO WORKPIECES
The invention relates to a scanner welding apparatus (100) for scanner welding at least two workpieces (7), wherein: the scanner welding apparatus (100) comprises a laser beam device (10) for emitting a laser beam (1) and scanner optics (20) for orienting the emitted laser beam (1) onto at least one machining surface (8) of at least one of the at least two workpieces (7); the scanner optics (20) comprise a collimation lens (21) and at least one movable mirror (22); and, between the laser beam device (10) and the collimation lens (21), a numerical aperture NA can be determined from the refractive index n of a medium between the laser beam device (10) and the collimation lens (21) and the aperture angle α of the laser beam (1) between the laser beam device (10) and the collimation lens (21) according to the formula NA = n x sin(α/2), wherein the scanner welding apparatus (100) is designed such that NA > 0.08 applies to the numerical aperture.
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 26/082 - Systèmes de balayage, c. à d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
73.
METHOD FOR JOINING TWO COMPONENTS OF A BATTERY BY MEANS OF SCANNER WELDING
The invention relates to a method for joining two components (41, 42) of a battery (40), wherein the components (41, 42) are welded to one another by scanner welding by means of a welding device (100), wherein, during the scanner welding, a measuring beam (3) of an OCT sensor system is optically guided by means of a processing lens (32) of the welding device (100) coaxially in relation to a processing beam (2) of the welding device (100), and wherein the measuring beam (3) and the processing beam (2) are guided at a substantially matching angle of incidence (α) in relation to at least one processing surface of the two components (41, 42).
A method for machining a material using a pulsed laser includes introducing a sequence of laser pulses into the material for machining the material, and synchronizing a start of each sequence with a fundamental frequency of the laser. The sequence of laser pulses comprises at least two different sequence elements that are offset from one another in space and time. Each sequence element comprises an individual laser pulse, a specific succession of individual laser pulses, or a burst of laser pulses. Specific sequence element properties are impressed on each sequence element. The sequence element properties comprise a position of the laser focus of a respective sequence element. The position of the laser focus of each sequence element of the sequence is adapted for each sequence element.
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 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
A method for separating a workpiece along a separation line by using laser pulses of a laser beam includes splitting the laser beam into a plurality of partial laser beams using a beam splitter optical unit, focusing the plurality of partial laser beams onto a surface of the workpiece and/or into a volume of the workpiece using a focusing optical unit, so that the plurality of partial laser beams are arranged next to one another and spaced apart from one another along the separation line, and ablating material of the workpiece along the separation line by introducing the laser pulses of the plurality of partial laser beams into the workpiece. The laser power per partial laser beam is adjusted depending on an ablation depth obtained in the workpiece.
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 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
The invention relates to a device for generating a defined laser line (12) on a working plane (14), said device comprising at least one laser light source (20) which has a pumped solid-state laser (28) and generates at least one pulsed UV laser raw beam (I). The device further comprises an optical arrangement (18) having a number of optical elements (42, 44, 46, 48, 50, 52) which define a beam path for the at least one pulsed UV laser raw beam (I). The optical arrangement (18) is designed to form a pulsed illumination beam (16) at a defined pulse rate from the at least one pulsed UV laser raw beam (I). The pulsed illumination beam (16) defines a beam direction (52) which intersects the working plane (14). The pulsed illumination beam (16) has a beam profile (V; VI) in the area of the working plane (14), said beam profile having, perpendicular to the beam direction, a long axis with a long axis beam width (LA) and a short axis with a short axis beam width (KA). According to one aspect of the invention, the optical arrangement (18) is designed to generate the beam profile (V; VI) with a short axis beam width (KA) that is less than 250 μm, and the at least one laser light source (20) and the optical arrangement (18) are jointly designed to generate the pulsed illumination beam (16) in the area of the working plane (14) at a defined pulse rate that is greater than 1 kHz.
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
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
H01S 3/23 - Agencement de plusieurs lasers non prévu dans les groupes , p.ex. agencement en série de deux milieux actifs séparés
77.
MANUFACTURING DEVICE, METHOD AND COMPUTER PROGRAM PRODUCT FOR THE ADDITIVE MANUFACTURE OF COMPONENTS FROM A POWDER MATERIAL
A manufacturing device for additive manufacture of components includes a beam generation device configured to generate energy beams, a scanner device configured to locally and selectively irradiate a working region with the energy beams, a protective gas device configured to generate a protective gas flow over the working region, and a control device configured to drive the scanner device. The control device is configured to define a first irradiation region along which a first irradiation section is displaced from a first starting position to a first end position, to define a second irradiation region along which a second irradiation section is displaced from a second starting position to a second end position, and to begin irradiation of the second irradiation region when the first irradiation section and the second starting position are not arranged within an interaction zone defined by a protective gas flow direction relative to one another.
A method for planning locally selective irradiation of a working region with an energy beam in order to produce a component from a powder material arranged in the working region includes defining an origin on a component contour of a component layer to be generated on a powder material layer in the working region, and overlaying the component contour, based on the origin, with an arrangement of irradiation regions to be irradiated with the energy beam. Each irradiation region has a dimension that is predetermined independently of the component contour and identical for all irradiation regions.
A beam transformer for transforming an input laser beam into a transformed laser beam for use in laser systems for line illumination of an object includes a transparent planar optical element that has a front surface and a back surface, which extend substantially parallel to one another. The optical element has an entrance area and an exit area, and a plurality of reflective surfaces for beam deflection. The beam transformer further includes a cooling device provided at least on the front surface or the back surface of the optical element.
The invention relates to a method for welding a first welding surface (12a) of a first metal sheet (10a) to a second welding surface (12b) of a second metal sheet (10b), the first welding surface (12a) having a zinc coating (16a). The welding surfaces (12a, 12b) face one another and are spaced from one another. A laser beam (18) is guided along the first welding surface (12a) and the second welding surface (12b) in a wobbling movement to weld the welding surfaces (12a, 12b). The wobbling movement has one direction component in a forward direction (FD) of the laser beam (18) and one direction component perpendicular to the forward direction (FD). The path (24) of the laser beam (18) on the welding surfaces (12a, 12b) has a pattern which repeats with a period (30) in the forward direction (FD). The width of the path (24) perpendicular to the forward direction (FD) is greater than the period (30) of the path (24) in the forward direction (FD). The laser beam (18) is divided in the radial direction by its beam axis (BA) into an inner profile (20) and an outer profile (22), the intensities of which are different, and the outer profile (22) surrounds the inner profile (20).
The invention relates to a method for welding a first welding surface (12a) of a first metal sheet (10a) to a second welding surface (12b) of a second metal sheet (10b), wherein the first welding surface (12a) has a coating (16a) which comprises an alloy of aluminium and silicon. The welding surfaces (12a, 12b) are arranged so as to face one another and be spaced apart from one another. A laser beam (18) is guided along the first welding surface (12a) and the second welding surface (12b) in order to weld the welding surfaces (12a, 12b) in a wobbling movement. The wobbling movement has a directional component in a feed direction (FD) of the laser beam (18) and a directional component perpendicular to the feed direction (FD). The path (24) of the laser beam (18) on the welding surfaces (12a, 12b) has a pattern which repeats in the feed direction (FD) with a period (30). The width of the path (24) perpendicular to the feed direction (FD) is greater than the period (30) of the path (24) in the feed direction (FD). The laser beam (18) is divided into an inner profile (20) and an outer profile (22), the intensities of which are different, by its beam axis (BA) in the radial direction, wherein the outer profile (22) surrounds the inner profile (20).
The invention relates to an assembly (10) for electrically connecting at least two electrically conductive conductor elements (12), the assembly comprising: a first electrically conductive conductor element (12-1) having a first contact face (123-1), a second electrically conductive conductor element (12-2) having a second contact face (123-2), wherein the conductor elements (12-1, 12-2) are arranged in relation to one another in such a way that they are in contact with one another via the relevant contact face (123-1, 123-2), wherein the first conductor element (12-1) and/or the second conductor element (12-2) have/has a modified surface structure in the region of the relevant contact face (123-1, 123-2). The invention also relates to a conductor element (12) for use in the assembly (10), and to a method and a laser processing system (20) for producing a structured surface on a conductor element (12).
H01R 4/30 - Connexions par serrage; Connexions par ressort utilisant un organe de serrage constitué par une vis ou par un écrou
H01R 4/34 - Conducteurs logés sous la tête d'une vis
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 26/352 - Travail par rayon laser, p.ex. soudage, découpage ou perçage pour le traitement de surface
H01R 4/26 - Connexions dans lesquelles l'une au moins des parties assurant la connexion présente des saillies qui mordent ou sont en prise avec l'autre partie en vue d'améliorer le contact
83.
PROCESSING OPTICAL UNIT, LASER PROCESSING APPARATUS AND METHOD FOR LASER PROCESSING
A processing optical unit for workpiece processing includes a polarizer arrangement comprising a birefringent polarizer element for splitting at least one input laser beam into at least two partial beams each partial beam having one of two different polarization states, and a focusing optical unit arranged downstream of the polarizer arrangement in the beam path and configured to focus the partial beams onto at least two focus zones. The polarizer arrangement has a further optical element arranged downstream of the birefringent polarizer element in the beam path and configured to change an angle and/or a distance of at least one of the partial beams relative to an optical axis of the processing optical unit.
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. 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
84.
METHOD FOR THE DISPLACEMENT OF A CONTINUOUS ENERGY BEAM, AND MANUFACTURING DEVICE
A method for displacing a continuous energy beam includes radiating the continuous energy beam onto a powder material and displacing the energy beam by overlaying an optical deflection of the energy beam using a deflection device and a mechanical deflection of the energy beam using a scanner device. The mechanical deflection is configured to position the energy beam at a plurality of irradiation positions and the optical deflection is configured to deflect the energy beam around each of the irradiation positions within a beam region onto at least one beam position of the sequence of beam positions. The optical deflection and the mechanical deflection are changed simultaneously or successively in order to scan the sequence of beam positions using the energy beam.
The present invention relates to a device and a method for processing a workpiece (5) by means of a laser beam (10) of a laser (1), comprising a waveplate (2) and a focusing device (4), wherein the waveplate (2) is designed to impose a first location-dependent phase shift on the laser beam (10) with a first input polarisation and to impose a second location-dependent phase shift on the laser beam (10) with a second input polarisation, the focusing device (4) is designed to focus the laser beam (10) into at least one focus zone (120, 122), wherein the beam shape of the laser beam (10) in the focus zone (120, 122) is determined by the location-dependent phase shift, and at least one focus zone (120, 122) at least partially overlaps with the workpiece (5) and the workpiece (5) is exposed to laser radiation in the at least one focus zone (120, 122) and is thereby processed.
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
B23K 26/402 - Enlèvement de matière en tenant compte des propriétés du matériau à enlever en faisant intervenir des matériaux non métalliques, p.ex. des isolants
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 26/067 - Division du faisceau en faisceaux multiples, p.ex. 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
G02B 5/30 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES Éléments optiques autres que les lentilles Éléments polarisants
G02B 27/09 - Mise en forme du faisceau, p.ex. changement de la section transversale, non prévue ailleurs
B23K 26/066 - 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 par utilisation de masques
B23K 103/00 - Matières à braser, souder ou découper
86.
DEVICE AND METHOD FOR JOINING AT LEAST TWO JOINING PARTNERS
A method for joining two joining partners includes applying a coating to at least one of the two joining partners so as to be arranged between the two joining partners before joining and joining the at least two joining partners to one another using ultrashort laser pulses of a laser beam of an ultrashort pulse laser. At least one joining partner is substantially transparent to the ultrashort laser pulses of the ultrashort pulse laser, and the coating comprises physical properties similar to at least one joining partner and/or a chemical constituent similar to at least one joining partner.
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 rac
B23K 26/244 - Soudage de joints du type à recouvrement
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 26/324 - Assemblage tenant compte des propriétés du matériau concerné faisant intervenir des parties non métalliques
87.
LASER PROCESSING OF A WORKPIECE HAVING A CURVED SURFACE
A method for processing a workpiece using a pulsed laser beam includes beam shaping of the laser beam to form an elongated focus zone in the material of the workpiece. The beam shaping is carried out by using an arrangement of diffractive, reflective and/or refractive optical assemblies. The beam shaping includes focus-forming beam shaping to cause beam portions to enter at an entry angle to a beam axis of the laser beam for forming the elongated focus zone along the beam axis in the workpiece by way of interference, and phase-correcting beam shaping to counteract any influence of the interference by entrance of the laser beam into the workpiece. The method further includes setting beam parameters of the laser beam so that the material of the workpiece is modified in the elongated focus zone.
B23K 26/06 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples
B23K 26/046 - Focalisation automatique du faisceau laser
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
The invention relates to a method for laser cladding, in which method pulverous material (20) and a laser beam (30) are directed, at an angle to each other, toward a workpiece surface (12) of a workpiece (10) such that the pulverous material (20) is at least partially heated in a zone of interaction (40) with the laser beam (30) above the workpiece surface (12) and is welded onto the workpiece surface (12) along a predefined contour, wherein the laser beam (30) has a wavelength in the range between 0.4 µm and 1.1 µm, and wherein, within the zone of interaction (40), the laser beam (30) has an intensity in its edge region (312a, 312b, 312c) which is greater than an intensity in the core region (314) of the laser beam (30), the greater intensity of the edge region (312a, 312b, 312c) being applied to the pulverous material (20) as the pulverous material enters the zone of interaction (40). The invention also relates to a device for carrying out the method.
B23K 26/073 - Détermination de la configuration du spot laser
B23K 26/144 - 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 laser; Buses à cet effet l'écoulement de fluide contenant des particules, p.ex. de la poudre
B23K 26/34 - Soudage au laser pour des finalités autres que l’assemblage
A method for displacing a continuous energy beam includes emitting a continuous energy beam in a direction of a powder material and displacing the energy beam by overlaying an optical deflection of the energy beam using of a deflection device and a mechanical deflection of the energy beam using of a scanner device. The mechanical deflection is configured to position the energy beam at a plurality of irradiation positions, and the optical deflection is configured to deflect the energy beam around each of the irradiation positions within a beam region of the deflection device onto at least one beam position in a sequence of beam positions. The optical deflection and the mechanical deflection are controlled such that the energy beam successively scans subsequences with an abrupt change of the optical deflection such that two spatially separated subsequences are successively adopted by the energy beam.
The invention relates to a method for the laser processing of a workpiece (104) which has a transparent material (102). In the method, multiple focal elements (120, 120') are provided by means of an input laser beam (108), and the focal elements (120, 120') act on the material (102), wherein material modifications (138) are produced in the material (102) along a specified processing line (128) as a result of the focal elements (120) acting on the material (102), which can be detached at said processing line by means of an etching process using at least one wet-chemical solution, and as a result of the focal elements (120') acting on the material (102), at least one separate etching entrance (144) is formed in the material (102) in order to supply the at least one wet-chemical solution to the processing line (128) from an outer face (132, 134) of the workpiece (104).
C03C 23/00 - Autres traitements de surface du verre, autre que sous forme de fibres ou de filaments
C03C 15/00 - Traitement de surface du verre, autre que sous forme de fibres ou de filaments, par attaque chimique
C03B 33/02 - Découpe ou fendage des feuilles de verre; Dispositifs ou machines à cet effet
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
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 rac
B23K 26/359 - Travail par rayon laser, p.ex. soudage, découpage ou perçage pour le traitement de surface en formant une ligne ou un motif linéaire, p.ex. une ligne en pointillés d'amorce de rupture
91.
METHOD AND DEVICE FOR ADDITIVELY MANUFACTURING AT LEAST ONE COMPONENT THAT CAN EASILY BE REMOVED FROM A CARRIER
The invention relates to a method for producing a first component (12) from metal powder by means of additive laser manufacturing. The first component (12) is connected to a carrier (14) heated to greater than 400°C via a first support structure (16). The first support structure (16) can have a plurality of first support struts, which are delicately designed so that the first component (12) can be easily separated from the first support structure (16). A bearing structure (28) can also be attached to the carrier (14), wherein a second component (22) is supported on the bearing structure (28) via a second support structure (26). A further bearing structure (32) can be formed on the bearing structure (28), which supports a further component (24) via a further support structure (30). The invention also relates to a manufacturing device (10), in particular for carrying out the method.
B22F 10/47 - Structures destinées à soutenir des pièces ou des articles pendant la fabrication et retirées par la suite caractérisées par des caractéristiques structurelles
B22F 10/66 - Traitement de pièces ou d'articles après leur formation par des moyens mécaniques
B33Y 40/20 - Posttraitement, p.ex. durcissement, revêtement ou polissage
92.
METHOD, PLANNING DEVICE AND COMPUTER PROGRAM PRODUCT FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORKING REGION WITH AN ENERGY BEAM, AND METHOD, MANUFACTURING DEVICE AND COMPUTER PROGRAM PRODUCT FOR ADDITIVELY MANUFACTURING COMPONENTS FROM A POWDER MATERIAL
The invention relates to a method for planning a locally selective irradiation of a working region (15) with an energy beam (11), in order to manufacture a component (3) layer-by-layer from a plurality of powder material layers (19) of a powder material (5) arranged in the working region chronologically one after another in a layer sequence by means of the energy beam (11), wherein, for at least one powder material layer (19) of the plurality of powder material layers (19), a shifting of the energy beam (11) in sections along a contour line (33) of the component to be produced is determined, wherein a plurality of contour path vectors (300) are determined for the shifting of the energy beam (11) in sections along the contour line (33), and wherein a maximum length of less than 1 mm is determined for the contour path vectors (300), wherein an irradiation plan is obtained for the locally selective irradiation of the working region (15) with the energy beam (11).
B22F 10/366 - Paramètres de balayage, p.ex. distance d’éclosion ou stratégie de balayage
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 10/38 - Commande ou régulation des opérations pour obtenir des caractéristiques spécifiques du produit, p.ex. le lissage de la surface, la densité, la porosité ou des structures creuses
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
93.
METHOD, PLANNING DEVICE AND COMPUTER PROGRAM PRODUCT FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORKING REGION WITH AN ENERGY BEAM, AND METHOD, MANUFACTURING DEVICE AND COMPUTER PROGRAM PRODUCT FOR ADDITIVELY MANUFACTURING COMPONENTS FROM A POWDER MATERIAL
The invention relates to a method for planning a locally selective irradiation of a working region (15) with an energy beam (11), in order to manufacture a component (3) layer-by-layer from a plurality of powder material layers (19) of a powder material (5) arranged in the working region chronologically one after another in a layer sequence by means of the energy beam (11), wherein at least one first powder material layer (19, 19.1) is determined from the plurality of powder material layers (19), for which at least one first cross-sectional area (33) of the component (3) to be manufactured is determined, which is to be hardened in the powder material layer (19) by means of the energy beam (11), wherein a plurality of irradiation vectors (300) for the irradiation of the cross-sectional area (33) to be hardened are determined, and wherein a chronological sequence for at least two directly adjacent neighbouring irradiation vectors (310) of the plurality of irradiation vectors (300) is determined according to at least one proximity parameter determined for the neighbouring irradiation vectors (310) with a respective at least one further irradiation vector (320) with temporal priority; wherein an irradiation plan is obtained for the locally selective irradiation of the working region (15) with the energy beam (11).
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B22F 10/38 - Commande ou régulation des opérations pour obtenir des caractéristiques spécifiques du produit, p.ex. le lissage de la surface, la densité, la porosité ou des structures creuses
94.
METHOD FOR OPERATING A MANUFACTURING SYSTEM FOR THE ADDITIVE MANUFACTURE OF COMPONENTS FROM A POWDER MATERIAL
The invention relates to a method for operating a manufacturing system for the additive manufacture of components from a powder material which is applied in layers on a construction platform in a construction chamber of the manufacturing system and is locally welded by means of exposure, wherein quality parameters (Q) of a working layer (AS) of the powder material are ascertained, at least in the region of the component or components that are being manufactured, and analyzed by means of a monitoring device, and when the ascertained quality parameters (Q) exceed admissible tolerance values manufacture of the relevant component or components is terminated.
B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B22F 10/322 - Commande ou régulation des opérations de l’atmosphère, p.ex. de la composition ou de la pression dans une chambre de fabrication d’un écoulement de gaz, p.ex. du débit ou de la direction
B22F 10/37 - Commande ou régulation des opérations des caractéristiques du lit de poudre, p.ex. de la densité
A method for monitoring a laser welding process for welding two workpieces using a laser wavelength, in which a pulsed laser beam is directed into the workpieces so as to melt a melting volume in a region of an interface of the two workpieces in order to produce a weld seam, and in which an intensity of a process radiation emitted by the melting volume is detected. According to the method for monitoring the lase welding process, in a first step, a detected intensity profile is evaluated with regard to at least one of the following features: (i) a depth of an intensity decrease, (ii) a duration of an intensity decrease, and (iii) a renewed increase in intensity after an intensity decrease. In a second step it is determined whether or not a gap between the two workpieces was bridged during the laser welding process based on the evaluation.
B23K 26/03 - Observation, p.ex. surveillance de la pièce à travailler
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 method for hardening a transparent material includes the steps of introducing a material modification to the transparent material using a laser beam of ultrashort laser pulses of an ultrashort pulse laser so as to harden at least a portion of the transparent material.
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 26/046 - Focalisation automatique du faisceau laser
B23K 26/00 - Travail par rayon laser, p.ex. soudage, découpage ou perçage
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
97.
MANUFACTURING DEVICE AND METHOD FOR THE ADDITIVE MANUFACTURING OF A COMPONENT PART FROM A POWDER MATERIAL, AND METHOD FOR PRODUCING A SPECIFIC INTENSITY PROFILE OF AN ENERGY BEAM
A manufacturing device for additive manufacturing of component parts from a powder material includes a beam producing device, a scanner device configured to displace an energy beam to a plurality of irradiation positions, a deflection device configured to displace the energy beam at an irradiation position to a plurality of beam positions, and a control device configured to control the deflection device and to produce a specific intensity profile in the beam region. The control device does this by dividing and displacing the energy beam to at least two beam positions separated by a distance that is variably settable and/or by displacing the energy beam and by specifying at least one operating parameter of the deflection, such as a residence time at a beam position, a beam position density distribution, a frequency distribution, and an intensity influencing parameter of the energy beam deflected to the beam positions.
B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B23K 26/067 - Division du faisceau en faisceaux multiples, p.ex. foyers multiples
B23K 26/073 - Détermination de la configuration du spot laser
98.
MANUFACTURING DEVICE FOR ADDITIVE MANUFACTURING OF COMPONENT PARTS FROM A POWDER MATERIAL, METHOD FOR CHANGING A BEAM PROFILE OF AN ENERGY BEAM, AND USE OF AT LEAST ONE ACOUSTO-OPTIC DEFLECTOR
A manufacturing device for additive manufacturing of a component part from a powder material includes a beam generating device configured to generate an energy beam, a scanner device configured to displace the energy beam to a plurality of irradiation positions in order to produce the component part from the powder material arranged in the work region using the energy beam, a deflection device configured to displace the energy beam to a plurality of beam positions at an irradiation position of the plurality of irradiation positions within a beam region, and a control device operatively connected to the deflection device and configured to control the deflection device and to change a beam profile of the beam region during production of a component part by changing a control of the deflection device.
A material deposition unit includes a radiation unit designed to emit electromagnetic radiation in a directed manner onto a workpiece along a beam axis, and a powder discharge device that has multiple powder discharge units configured to discharge powder in a directed form onto the workpiece through powder-outlet openings. The material deposition unit further includes a powder division unit having multiple powder channels. A number of powder channels corresponds to a number of powder discharge units. The powder division unit is designed to distribute a central powder stream guided to a feed channel uniformly over the powder channels. Each respective powder channel is connected to a respective powder discharge unit by an exchangeable connecting element. At least one powder discharge unit has an exchangeable powder discharge element, which is elongate, has a first end and a second end, and is arranged at least partially within the corresponding powder discharge unit.
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 laser; Buses à cet effet
B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
100.
METHOD, PLANNING DEVICE AND COMPUTER-PROGRAM PRODUCT FOR PLANNING LOCALLY SELECTIVE IRRADIATION OF A WORKING AREA WITH AN ENERGY BEAM, AND METHOD, PRODUCTION DEVICE AND COMPUTER-PROGRAM PRODUCT FOR THE ADDITIVE MANUFACTURING OF COMPONENTS FROM A POWDER MATERIAL
The invention relates to a method for planning locally selective irradiation of a working area (15) with an energy beam (11), in order to use the energy beam (11) to produce a component (3) layer by layer from a plurality of powder-material layers (19) of a powder material (5) arranged successively over time in a sequence of layers in the working area (15), wherein - at least one first powder-material layer (19.1) is selected from the plurality of powder-material layers (19) to be the one for which at least one first cross-sectional region (33.1) of the component (3) to be produced that is to be fused in the powder-material layer (19) by means of the energy beam (11) is selected, wherein the at least one first cross-sectional region (33.1) is divided into a first skin region (35.1) and a first core region (37.1), wherein - at least one second powder-material layer (19.2) is selected from the plurality of powder-material layers (19) to be the one for which at least one second cross-sectional region (33.2) of the component (3) to be produced that at least partially overlaps with the first cross-sectional region (33.1) and is to be fused by means of the energy beam (11) is selected, wherein the at least one second cross-sectional region (33.2) is divided into a second skin region (35.2) and a second core region (37.2), wherein - for the first cross-sectional region (33.1), irradiation with the energy beam (11) in the first skin region (35.1) is selected with a reduced average energy input over time in comparison with the first core region (37.1), wherein - for the second cross-sectional region (33.2), irradiation with the energy beam (11) is only selected for the second core region (37.2), while the second skin region (35.2) is selected not to be irradiated, and wherein - an irradiation plan is obtained for the locally selective irradiation of the working area (15) with the energy beam (11).
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 10/36 - Commande ou régulation des opérations des paramètres du faisceau d’énergie
B22F 10/366 - Paramètres de balayage, p.ex. distance d’éclosion ou stratégie de balayage
B22F 10/38 - Commande ou régulation des opérations pour obtenir des caractéristiques spécifiques du produit, p.ex. le lissage de la surface, la densité, la porosité ou des structures creuses
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p.ex. par frittage ou fusion laser sélectif
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
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