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WO2025180890A1 - Dispositif de fabrication d'une pièce à usiner en trois dimensions au moyen d'un procédé de stratification générative - Google Patents

Dispositif de fabrication d'une pièce à usiner en trois dimensions au moyen d'un procédé de stratification générative

Info

Publication number
WO2025180890A1
WO2025180890A1 PCT/EP2025/054267 EP2025054267W WO2025180890A1 WO 2025180890 A1 WO2025180890 A1 WO 2025180890A1 EP 2025054267 W EP2025054267 W EP 2025054267W WO 2025180890 A1 WO2025180890 A1 WO 2025180890A1
Authority
WO
WIPO (PCT)
Prior art keywords
support element
component
movement device
support
vertical movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2025/054267
Other languages
German (de)
English (en)
Inventor
Johannes Schuster
Henning Melles
Kai Burfeind
Jonas PRELL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon SLM Solutions AG
Original Assignee
Nikon SLM Solutions AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikon SLM Solutions AG filed Critical Nikon SLM Solutions AG
Publication of WO2025180890A1 publication Critical patent/WO2025180890A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/38—Housings, e.g. machine housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/141—Processes of additive manufacturing using only solid materials
    • B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/25—Housings, e.g. machine housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • B22F10/14—Formation of a green body by jetting of binder onto a bed of metal powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/30—Platforms or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/165—Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/245—Platforms or substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to a device for producing a three-dimensional workpiece using a generative layer-by-layer manufacturing process.
  • the generative layer-by-layer manufacturing process can, in particular, be selective laser melting or selective laser sintering.
  • a raw material e.g., a raw material powder
  • a carrier or building board
  • site-specific irradiation e.g., by melting or sintering
  • the irradiation can be carried out using electromagnetic radiation, for example, in the form of laser radiation, or by particle radiation, for example, in the form of electron beams.
  • the molding compound in an initial state, can initially be in the form of granules, powder, or liquid molding compound and can be solidified selectively or, in other words, site-specifically as a result of the irradiation.
  • the molding compound can be a bulk material, such as raw material powder.
  • the molding compound can, for example, comprise ceramic, metal, or plastic materials, as well as mixtures thereof.
  • a variant of generative layer building processes concerns the so-called laser beam melting in the powder bed (also: selective laser melting), in which metallic and/or ceramic raw material powder materials in particular are solidified into three-dimensional workpieces under irradiation with a laser beam.
  • raw material powder in the form of a layer of raw material powder to a carrier and to irradiate it selectively and in accordance with the geometry of the workpiece layer currently being produced.
  • the laser radiation penetrates the raw material powder and solidifies it, for example, by heating, which causes melting or sintering.
  • a new layer of unprocessed raw material powder is applied to the previously produced workpiece layer.
  • Known coaters or powder application devices can be used for this purpose.
  • the now topmost and still unprocessed raw material powder layer is irradiated again. Consequently, the workpiece is built up successively layer by layer, with each layer defining a cross-sectional area and/or contour of the workpiece.
  • CAD or comparable workpiece data to produce the workpieces essentially automatically.
  • process-critical components certain components of a device for producing a three-dimensional workpiece to have a certain minimum degree of spatial stability with respect to one another (referred to herein as so-called process-critical components).
  • process-critical components can be, for example, a process chamber of the device, an irradiation unit of the device, at least one coater of the device for applying a new raw material layer, and/or at least one laser protective glass.
  • Non-process-critical components can include, for example, a raw material container, a raw material conveyor, a gas container, a gas conveyor, a filter element, a temperature control element, a sensor, and/or a sieve element.
  • the stability of certain components of the device required to maintain high quality of the produced workpieces cannot be adequately ensured.
  • the quality of the workpieces produced e.g. mechanical stability, surface smoothness, etc. may suffer.
  • the object of the invention is therefore to provide an improved device for producing a three-dimensional workpiece using a generative layer construction method, which solves at least one of the problems described above or a problem related thereto.
  • the invention therefore relates to a device for producing a three-dimensional workpiece using a generative layer-building process.
  • the device comprises at least one primary component.
  • the at least one primary component is selected in particular from the list comprising a process chamber of the device, at least one irradiation unit of the device for the location-selective emission of a particle or laser beam, at least one coater of the device for applying a new raw material layer, and at least one laser protective glass.
  • the device further comprises at least one secondary component.
  • the at least one secondary component is selected in particular from the list comprising a raw material container, a raw material conveying means, a gas container, a gas conveying means, a filter element, a temperature control element, a sensor, and a sieve element.
  • the device comprises at least one first support element, which is configured to transfer at least the entire weight of a weight of the at least one primary component to a base element, and at least one second support element, which supports the at least one secondary component and which does not support the weight of the at least one primary component.
  • the device can, in particular, be a device for selective laser melting or sintering, which, for example, has one or more of the above-described features and/or components of a corresponding device.
  • the device can be a device for selective electron beam melting.
  • the device can also be configured to perform another generative layer-building process, for example, binder jetting.
  • the term "primary component” is used herein synonymously with the term "process-critical component.”
  • secondary component is used herein synonymously with the term “non-process-critical component.”
  • Primary components can represent one or more components from the specified list, or other components not mentioned therein. The fact that "at least one primary component" is selected from the specified list means that one or more primary components is/are provided and that the one or more primary components can be freely selected from the list. The same applies to "at least one secondary component" and the list specified for it.
  • the term "process-critical” is limited herein to the aspect of the positioning of the respective component.
  • the positioning of the "process-critical component” is process-critical because a change in positioning during the process can impair the quality of the manufactured workpiece. This applies, for example, in particular to the positioning of an irradiation unit, especially in relation to a build cylinder or a process chamber of the device.
  • other components of the device are not “process-critical” because their positioning has no (or only a minor) influence on the manufacturing quality of the workpiece.
  • elements of a gas circuit and/or a powder circuit are not process-critical in this sense and can, for example, be assigned to the secondary components (with possible exceptions).
  • the first and/or second support element can, in particular, each be a rack and/or frame.
  • the term first and/or second support element can thus be replaced by "first/second frame element.”
  • the first and/or second support element can be made of a metal.
  • the fact that the first support element transfers at least the entire weight of a weight of the at least one primary component to a floor element can mean that the at least one primary component (i.e., one or more primary components) is attached to the first support element and, in particular, is held by it.
  • the weight is not diverted from the first support element (in particular laterally), but is transferred to the floor element.
  • the first support element in particular with four or more feet
  • the first support element can be stabilized laterally (in particular with regard to an inclination and/or displacement to the side), but only in such a way that the stabilizing element(s) does not transfer any weight of the first support element.
  • the second support element can be configured for lateral stabilization of the first support element.
  • the fact that the second support element supports the at least one secondary component can mean that the at least one secondary component (i.e., one or more secondary components) is fastened to the first support element and, in particular, is held by it.
  • This can, for example, be designed such that a weight force of the at least one secondary component is not diverted (in particular laterally), but is transferred to the floor element.
  • the second support element can stand on the floor element (in particular with four or more feet).
  • the second support element can be configured to transfer an entire weight force of a weight of the at least one secondary component to the floor element.
  • the at least one primary element is supported by the first support element, but not by the second support element.
  • the floor element can be a component of the device (e.g., a floor plate, particularly made of metal) or a separate floor element that can be assigned to the device. Furthermore, the floor element can represent or comprise a factory floor.
  • the first and/or second support element can thus each have one or more feet with which it can be placed on the floor element and, if necessary, secured (e.g., by means of screws).
  • the second support member may be a machine frame surrounding the first support member.
  • first support element and the second support element each span a (for example, substantially cuboid-shaped) volume, wherein the volume of the first support element is located entirely within the volume of the second support element.
  • the device may further comprise a vertical movement device for raising and/or lowering a construction plate on which the three-dimensional workpiece is manufactured, and/or a construction cylinder surrounding the construction plate.
  • the vertical movement device may stand independently on the base element or be adjustable thereon, or (b) the vertical movement device may stand together with the first support element on a substrate plate, which is mounted on stands or can be placed on the floor element, so that a weight of the vertical movement device is not carried by the first support element.
  • a vertical direction is defined herein as the z-direction, with horizontal or lateral directions running within an x-y plane perpendicular to the z-direction.
  • the vertical movement device can, for example, comprise a spindle drive, in particular a two- or multi-stage spindle drive.
  • the building cylinder can be a cylinder open at the bottom and top, in particular with a rectangular cross-section, within which the building plate can be moved vertically up and down.
  • the vertical movement device stands together with the first support element on a substrate plate, the entire weight force of the weight of the at least one primary component is transferred via the substrate plate into the floor element.
  • the weight of the vertical movement device is not carried by the first support element and thus is not diverted via the first support element into the floor element.
  • the at least one primary component can be mechanically decoupled from the at least one secondary component in such a way that a change in weight and/or vibration of the at least one primary component does not result in any force being introduced onto the at least one secondary component.
  • first support element and the second support element standing independently on the base element or being able to be placed thereon and/or by no mechanically coupling elements being provided between the first support element and the second support element.
  • no mechanically coupling elements can be provided between the first and the second support element which, in the event of a change in weight and/or vibration of the at least one first primary component, transmit or can transmit a force resulting therefrom to the at least one secondary component.
  • the at least one secondary component can be mechanically decoupled from the at least one primary component in such a way that a change in weight and/or vibration of the at least one secondary component does not result in the introduction of force to the at least one primary component.
  • a pump of a gas or powder circuit can represent a secondary component which can cause vibrations.
  • these vibrations are not transmitted to the primary components, for example to an irradiation unit.
  • a powder tank Example of a secondary component
  • a change in weight more precisely: weight increase
  • the primary components e.g. an irradiation unit and/or the process chamber.
  • At least the process chamber and at least one irradiation unit can be provided as primary components.
  • the process chamber can be arranged on a first section of the first support element, and the at least one irradiation unit can be arranged on a second section of the first support element.
  • the process chamber and the at least one irradiation unit can be thermally decoupled from one another such that process heat generated within the process chamber does not lead to any relative displacement between the process chamber and the at least one irradiation unit.
  • the process chamber and the at least one irradiation unit can be mechanically decoupled from one another such that a deformation of the process chamber caused by process heat generated within the process chamber does not lead to a displacement of the irradiation unit relative to the process chamber and/or to a displacement of the irradiation unit relative to the first support element.
  • the above-mentioned decouplings can be achieved and/or reinforced by fastening the primary components, process chamber and irradiation unit, at different locations on the first support element.
  • the process chamber and/or the irradiation unit can be fastened to the first support element via mechanically and/or thermally decoupling fastening elements.
  • Further primary components can also be fastened to the first support element such that they are thermally and/or mechanically decoupled from one or more of the primary components.
  • the first support element can comprise at least one first extension element that can be integrated into the first support element and removed from the first support element again.
  • the first extension element increases the height of the first support element in the vertical direction compared to a removed state in which the first extension element is removed from the first support element.
  • at least one primary component of the at least one primary component can have a greater distance from the base element than in the removed state of the first extension element.
  • the first extension element can be connected to the other parts of the first support element, for example, by means of screws and/or plug connections.
  • the first extension element can be a so-called intermediate frame.
  • the second support element can comprise at least one second extension element that can be integrated into the second support element and removed from the second support element again.
  • the second extension element increases the height of the second support element in the vertical direction compared to a removed state in which the second extension element is removed from the second support element.
  • at least one secondary component of the at least one secondary component can have a greater distance from the base element than in the removed state of the second extension element.
  • the second support element can be extended for the production of larger, particularly taller (in the z-direction) workpieces.
  • the second extension element can be connected to the other parts of the second support element, for example, by means of screws and/or plug connections.
  • the second extension element can be a so-called intermediate frame.
  • At least one secondary component of the at least one secondary component can be arranged on a removable frame element of the second support element and can be configured to be removed from the device together with the removable frame element.
  • At least one secondary component of the at least one secondary component is synonymous with “one or more of the one or more secondary components.”
  • one or more secondary components can be integrated into the device, which can be connected to the remaining part of the second support element via detachable frame elements.
  • the device may further comprise a coater for applying a new layer of raw material, wherein the coater is held by a coater frame which stands directly on the floor element or can be placed on it. At least the weight of the coater can be transferred to the floor element via the coater frame. In particular, the weight is not diverted laterally (e.g., into the first or second support element).
  • the device may further comprise a coater for applying a new raw material layer, wherein the coater is attached to the second support element.
  • the second support element can thus bear the weight of the coater.
  • the coater's weight can be transferred to the floor element via the second support element.
  • the device may further comprise a support component for supporting the vertical movement device.
  • the support component can in particular enable lateral guidance of the vertical movement device.
  • the device may further comprise an alignment unit for aligning the vertical movement device along at least one horizontal direction.
  • the alignment unit can, for example, comprise a table movable in the x- and/or y-direction, on which the vertical movement device is arranged.
  • the alignment unit can comprise at least one linear actuator for linearly aligning the vertical movement direction along one direction (e.g., the x- or y-direction).
  • a lateral position of a build plate on which the workpiece is manufactured can be aligned.
  • the alignment of the build plate can be performed relative to a build cylinder connected to the process chamber.
  • the device may further comprise at least one tempering device for tempering the first support element and/or for tempering the second support element.
  • Tempering may involve heating and/or cooling.
  • a coolant such as water or another suitable liquid may be used.
  • the device may further comprise at least one damping element for damping an influence of vibrations of the second support element on the at least one primary component, in particular by providing the damping element in the first support element, in the second support element and/or in a base element which connects the first support element and the second support element to one another.
  • the vibrations can be caused, for example, by the operation of a secondary component, such as a pump or a fan.
  • the damping element can comprise a vibration-absorbing material, such as rubber.
  • the damping element can comprise one or more springs.
  • the vertical movement device may comprise a spindle or rod.
  • At least one bearing element may be provided between the spindle or rod and the build plate, which allows for inclination of the build plate relative to the spindle or rod along at least one axis and/or which allows for lateral displacement of the build plate relative to the spindle or rod along at least one lateral direction.
  • the spindle can be moved up and down using a spindle drive of the vertical movement device.
  • the spindle or rod can either be directly coupled to the build plate, but one or more intermediate elements (e.g., in the form of additional plates) can also be provided between the spindle or rod and the build plate.
  • the bearing element can prevent the build plate from becoming wedged within a build cylinder. In other words, the bearing element can serve to compensate for inaccurate lateral positioning between the vertical movement device and the build chamber or build cylinder.
  • the device may further comprise at least one horizontal movement device for performing a horizontal movement of at least one component of the device.
  • the horizontal movement device may comprise a gantry drive.
  • the horizontal movement is a movement parallel to a surface of the floor element.
  • a Cartesian coordinate system may, for example, be defined such that the surface of the floor element lies in the xy plane and a vertical direction perpendicular to it is defined as the z direction.
  • the device may further comprise at least one further vertical movement device for performing a vertical movement of the at least one component of the device.
  • the horizontal movement device can comprise the additional vertical movement device.
  • a gantry drive can be provided which, in addition to being able to perform movements within a horizontal plane (e.g., in the x-direction, in the y-direction, or in the x and y directions), is configured to additionally move the at least one component moved by the gantry drive in the horizontal direction (i.e., the z-direction).
  • an x-y-z movement device can be provided which is configured to move the at least one component of the device in all three spatial directions.
  • the at least one component of the device can be positioned precisely and independently of other components of the device.
  • the at least one component may comprise the at least one irradiation unit and/or the coater.
  • the irradiation unit can be moved horizontally in the x-direction and/or the y-direction. If the additional vertical movement device is provided, the irradiation unit can also be moved vertically in the z-direction. This can serve to reach a larger area of the build plate, so that an entire surface of the build plate can be selectively irradiated with a single irradiation unit. Furthermore, however, multiple irradiation units (e.g., 2, 4, 6, 8, 10, or 12) can also be held and moved by the horizontal movement device and/or the additional vertical movement device.
  • multiple irradiation units e.g., 2, 4, 6, 8, 10, or 12
  • the movement of the multiple irradiation units can be carried out jointly, so that the multiple irradiation units are rigidly coupled to one another. This allows a large area of the surface of the building board to be reached.
  • a separate horizontal movement device and/or a separate vertical movement device can also be provided for each of the multiple irradiation units, so that the individual irradiation units can be operated independently of one another. can be moved horizontally and/or vertically. This allows for greater flexibility in accessing individual sections of the building board to be consolidated.
  • the coater can be moved horizontally by the horizontal movement device, for example, to apply a new layer of powder to the build plate or to an underlying powder layer during the horizontal movement across the build plate.
  • the coater can be moved vertically by the additional vertical movement device, for example, to be lifted between two coating processes.
  • the at least one primary component may include the horizontal movement device.
  • the horizontal movement device can be arranged on the first support element and held by it.
  • the component moved by the horizontal movement device can also be held by the first support element via the horizontal movement device.
  • the horizontal movement device comprises the further vertical movement device
  • the further vertical movement device can also be arranged on the first support element and held by it.
  • the at least one secondary component may comprise the horizontal movement device.
  • the horizontal movement device can be arranged on the second support element and held by it.
  • the component moved by the horizontal movement device can also be held by the second support element via the horizontal movement device.
  • the horizontal movement device comprises the further vertical movement device
  • the further vertical movement device can also be arranged on the second support element and held by it.
  • the horizontal movement device can stand independently on the floor element or be able to be placed on it.
  • the horizontal movement device can comprise a frame that stands independently on the floor element or can be placed on it. This frame can thus represent a third support element.
  • the The component moved by the horizontal movement device can be held by this frame via the horizontal movement device. If the horizontal movement device includes the additional vertical movement device, the additional vertical movement device can also be held by the frame.
  • Figure 1 a schematic side view of a device for producing a three-dimensional workpiece using a generative layer construction process with a first and a second support element;
  • Figure 2 a schematic side view of a device for producing a three-dimensional workpiece using a generative layer construction method with a first and a second support element, wherein the first support element and a vertical movement device of the device stand on a common base plate;
  • Figure 3 a schematic side view of a device for producing a three-dimensional workpiece using a generative layer construction process with a first and a second support element, wherein extension elements are inserted into the first and second support elements;
  • Figure 4 a schematic side view of a device for producing a three-dimensional workpiece using a generative layer construction method with a first and a second support element, wherein a coater of the device is held by a coater frame;
  • Figure 5 a schematic side view of a device for producing a three-dimensional workpiece using a generative layer construction method with a first and a second support element, wherein a coater of the device is attached to the second support element;
  • Figure 6 a schematic side view of a device for producing a three-dimensional workpiece using a generative Layered construction method with a first and a second support element, wherein the first support element and a vertical movement device of the device stand on a common base plate which rests on a hemisphere; and
  • Figure 7 a schematic side view of a device for producing a three-dimensional workpiece using a generative layer construction method with a first, a second and a third support element, wherein the third support element holds a horizontal movement device and a further vertical movement device.
  • Figure 1 shows a schematic side view of a device 2 for producing a three-dimensional workpiece 4 using a generative layer-by-layer process.
  • the generative layer-by-layer process is selective laser melting or selective laser sintering.
  • the present disclosure is not limited to these techniques and can also be used, for example, in selective electron beam melting or binder jetting.
  • the device 2 shown is thus a device for selective laser melting.
  • a coater 10 of the device 2 applies a powder layer with an adjustable layer thickness to a build plate 26.
  • powder can be fed to the coater 10, for example, from a raw material container 12 (more precisely: powder container 12) for subsequent coating.
  • the layer thickness of the respective powder layer can be adjusted, for example, by vertically adjusting the height of the coater 10 and/or by appropriately positioning the build plate 26 vertically.
  • the coater 10 is guided horizontally over a build surface defined by the build plate 26.
  • the device 2 comprises an irradiation unit 8, which is configured for the selective irradiation of at least one laser beam 36, 38 onto the powder layer.
  • the irradiation unit 8 is configured to emit two laser beams 36 and 38 simultaneously.
  • the number of irradiable laser beams is not limited to two and can also be one, three, four, five, ..., 12 or more.
  • the irradiation unit 8 is configured to emit the two laser beams 36 and 38 independently of one another to a desired point on the powder layer applied to the build plate 26.
  • the irradiation unit 8 comprises a scanner unit for each of the laser beams 36, 38, which is configured, for example, with the aid of two galvanometer mirrors, to deflect the respective laser beam 36, 38 to the desired position on the powder layer.
  • the laser light required for emitting the laser beams 36 and 38 can either be generated within the irradiation unit 8 by one or more lasers or supplied to the irradiation unit 8, for example, using a light guide (in particular one or more glass fibers).
  • optical components can be located within the irradiation unit 8, such as at least one beam expander, at least one collimator, at least one movable lens for focusing or focus tracking, at least one f-theta lens, etc.
  • the build plate 26 can be lowered by one layer thickness, and the coater 10 begins coating a new powder layer. In this way, coating and solidification alternate until the finished workpiece 4 has been produced.
  • the build chamber 6 is arranged below the exposure unit 8. This forms a substantially closed space in which an inert gas atmosphere (e.g., argon or nitrogen atmosphere) prevails during the production of the workpiece 4.
  • an inert gas atmosphere e.g., argon or nitrogen atmosphere
  • a gas flow is generated through the build chamber 6, which is guided essentially horizontally through the build chamber 6.
  • the build chamber comprises at least one gas inlet and one gas outlet (not shown).
  • Figure 1 shows a blower 14 for generating the gas flow and a supply line 16 for the gas flow into the build chamber 6.
  • the associated discharge line and other elements of the gas circuit which purify the extracted inert gas (e.g., at least one filter) and feed it back to the blower 14 (e.g., corresponding pipes).
  • a powder circuit (not shown) is optionally provided. wherein excess raw material powder is collected in one or more overflow containers and can be removed from these again in order to be fed back to the coater 10 after subsequent cleaning (e.g. using a sieve).
  • a build cylinder 28 is attached to the build chamber 6 and, in particular, is secured thereto.
  • the partially finished workpiece 4 is located within the build cylinder 28, surrounded by the powder bed (consisting of unsolidified powder).
  • the build plate 26 (or carrier) is located within the build cylinder 28, onto which the first and further powder layers can be applied and which supports the partially finished workpiece 4 during the manufacturing process.
  • the build plate can be moved up and down (i.e., along the z-direction) within the build cylinder 28.
  • a vertical movement device 24 is provided, which, for example, comprises a spindle drive.
  • Figure 1 shows, by way of example, a spindle 30 which is configured to be moved up and down by the spindle drive of the vertical movement device 24.
  • at least one further spindle can be provided, which runs alongside the spindle 30.
  • the spindle drive of the vertical movement device can also be designed in several stages, with several spindles and their drives arranged one above the other.
  • the build plate 26 is connected to the spindle 30 at an upper end via an optional bearing element 32.
  • the bearing element 32 enables an inclination of the build plate (at least up to a predetermined angle) along at least one axis.
  • the axis runs parallel to the x-y plane (horizontal plane).
  • the bearing element 32 can thus be a joint.
  • the bearing element 32 can be a ball joint.
  • the bearing element 32 can enable a lateral displacement of the build plate 26 relative to the spindle 30, in particular through a loose bearing. In this case, the build plate 26 can slide horizontally relative to the spindle 30 at least along a predetermined distance.
  • the bearing element 32 serves in particular to compensate for positioning inaccuracies of the vertical movement device 24 relative to the construction cylinder 28. If, for example, the vertical movement device 24 does not is located exactly beneath the construction cylinder, in the absence of a bearing element 32, there would be a risk that the construction plate 26 would rub against at least one inner wall of the construction cylinder 28 or even become jammed in the construction cylinder 28. This can be avoided by allowing the construction plate 26 to be tilted and/or moved horizontally using the bearing element 32.
  • a rod or other lifting element can be used which is suitable for moving the building plate 26 up and down.
  • the vertical movement device 24 stands on an XY table 39 (this is optional).
  • the XY table 39 represents an alignment unit for aligning the vertical movement device 24 along at least one horizontal direction (x and/or y direction).
  • the vertical movement device 24 can be aligned in the x-y plane, i.e., along the x and y directions. This allows, for example, lateral positioning inaccuracies of the build cylinder 28 with respect to the vertical movement device 24 to be compensated for, and it can prevent the build plate 26 from becoming wedged in the build cylinder 28.
  • the device 2 comprises at least one primary component.
  • Primary components are also referred to herein as process-critical components, since their positional stability can be critical for the quality of the manufactured workpiece 4. In particular, the relative position between the primary components should be maintained during the manufacturing process, and they should not vibrate. Examples of primary components are the irradiation unit 8 and the process chamber 6. If the relative position between the irradiation unit 8 and the process chamber 6 changes during the process, a desired position of the laser beams 36, 38 in the area of the uppermost powder layer to be irradiated changes. If this change cannot be detected and compensated for, this can lead to quality losses of the manufactured workpiece 4.
  • primary components are the coater 10, a laser protective glass (not shown), optical components for process monitoring (e.g., a camera), and sensors.
  • the list of primary components Components are not limited to the components mentioned here but can be expanded and supplemented as required.
  • the device 2 also comprises so-called secondary components (or non-process-critical components), the positioning of which is of lesser relevance for the quality of the manufactured workpiece 4 or for the proper running of the manufacturing process.
  • the powder container 12, the blower 14, and the feed line 16 are shown as secondary components in Fig. 1 as examples.
  • Further examples of secondary components can be raw material conveying means, such as lines and/or pipes for conveying raw material (in particular powder), blowers or pumps for conveying raw material, a sieve element, which can be integrated into a raw material conveying circuit, etc.
  • secondary components are the components of a gas circuit, such as a gas container, a gas conveying means (e.g., the blower 14), and a filter element for filtering the conveyed gas.
  • a gas circuit such as a gas container, a gas conveying means (e.g., the blower 14), and a filter element for filtering the conveyed gas.
  • Further examples of secondary components can be one or more temperature control elements and/or one or more sensors (e.g. temperature sensor, humidity sensor, level sensor, etc.).
  • a first support element 18 of the device 2 is provided for holding the primary components.
  • the at least one primary component (in the case of the example in Figure 1: irradiation unit 8 and build chamber 6) is held by the first support element 18.
  • the first support element bears at least the entire weight of the primary components.
  • the weight of the primary components is completely transferred from the first support element 18 into the base element 20 and is not, for example, diverted laterally. In particular, the entire weight of the primary components rests on feet of the first support element and is transferred from these to the base element 20.
  • a second support element 22 of the device 2 is provided for holding the secondary components.
  • the at least one secondary component in the case of the example in Figure 1: powder container 12, blower 14 and supply line 16
  • the second support element 22 bears at least the entire weight of the secondary components.
  • the weight of the secondary components is completely guided by the second support element 22 into the base element 20 and is not, for example, diverted laterally. In particular, the entire weight of the secondary components rests on the feet of the second support element 22 and is transferred from these to the base element 20.
  • One or more laterally supporting elements can be provided (not shown), which are provided, for example, between the first support element and the second support element. These one or more laterally supporting elements can, for example, be designed to support the first support element laterally relative to the second support element so that the first support element cannot tip sideways. However, the laterally supporting elements are designed such that they can only transmit horizontal forces between the first and second support elements, but not vertically acting forces and thus in particular not weight forces, which are naturally directed in a vertical direction. In some examples, however, no laterally supporting elements are provided.
  • the vertical movement device 24 stands on the floor element 20 independently of the two support elements 18 and 22.
  • the XY table 39 is optionally provided between the floor element 20 and the vertical movement device 24.
  • this does not change the fact that the weight of the vertical movement device 24 is transferred to the floor element 20 independently of the first support element 18 and the second support element 22.
  • the weight of the vertical movement device 24 is transferred to the floor element 20 without the first support element 18 and/or the second support element 22 bearing any portion of the weight and/or transferring it to the floor element 20.
  • the vertical movement device 24 stands independently on the base element 20.
  • a weight force of the spindle 30, the bearing element 32, the build plate 26 and the powder bed including the partially solidified workpiece 40 can be transferred into the base element via the vertical movement device 24.
  • the first support element 18 surrounds the vertical movement device 24. This means, in particular, that the vertical movement device 24 occupies or defines a specific volume, and the first support element 18 occupies or defines a specific volume. This can, in particular, mean the smallest possible cuboid volume encompassing the respective element.
  • the volume of the vertical movement device 24 is arranged within the volume of the first support element 18.
  • the second support element 22 surrounds the first support element 18 (and the vertical movement device 24). This means, in particular, that the first support element 18 occupies or defines a specific volume, and the second support element 22 occupies or defines a specific volume. This can, in particular, mean the smallest possible cuboid-shaped volume encompassed by the respective element.
  • the volume of the first support element 18 is arranged within the volume of the second support element 22.
  • the second support element 22 can also be referred to as a machine frame.
  • the components of the device 2 which may possibly experience weight changes and/or vibrations, particularly during the manufacturing process, can be attached or arranged on the second support element 18. Furthermore, the components of the device 2 whose relative and/or absolute positioning is not process-critical (so-called secondary components) can be attached or arranged on the second support element 18.
  • the irradiation unit 8 and the process chamber 6 are thermally and/or mechanically decoupled from one another. Details regarding this decoupling can be found in the publication WO 2019/096421 A1.
  • the details of the attachment of the irradiation unit 8 and/or the process chamber 6 to the first support element 18 can be found in the publication WO 2019/096421 A1.
  • the first support element 18 can serve as a so-called exoskeleton for the attachment and relative arrangement of the irradiation unit 8 and the process chamber 6.
  • Further elements can be attached to the first support element 18—as described in WO 2019/096421 A1—in particular such that they are thermally and/or mechanically decoupled from one another.
  • the irradiation unit 8 and the process chamber 6 are arranged on the first support element 18 in such a way that the irradiation unit 8 and the process chamber 6 are each fastened to the first support element 18, but that no direct mechanical connection exists between the irradiation unit 8 and the process chamber 6. In other words, the only mechanical connection between the irradiation unit 8 and the process chamber 6 runs via the first support element 18.
  • a gap is located between the irradiation unit 8 and the process chamber 6. The gap is penetrated by the laser beams 36 and 38 after they have each left an exit opening of the irradiation unit.
  • the floor element 20 is shown in Figure 1 and the other figures as an example of a floor plate.
  • the floor element 20 can be any type of Floor on which the device 2 can be placed by means of the first and second support elements 18, 22 (e.g. a factory floor).
  • Figure 2 shows a schematic side view of a device 2 for producing a three-dimensional workpiece 4 using a generative layered construction method, comprising a first and a second support element 18, 22, wherein the first support element 18 and a vertical movement device 24 of the device 2 stand on a common base plate 40.
  • the weight of the first support element 18 and all primary components carried by the first support element 18 is thus transferred via the base plate 40 into the base plate 20.
  • the weight of the vertical movement device 24, which also stands on the base plate 40 is transferred via the base plate 40 into the base plate 20.
  • Figure 3 shows a schematic side view of a device 2 for producing a three-dimensional workpiece 4 using a generative layer construction method with a first and a second support element 18, 22, wherein extension elements 44, 46 are inserted into the first and second support elements 18, 22.
  • First extension elements 44 can be inserted into the first frame element 18 and/or second extension elements 46 can be inserted into the second frame element 22. In both cases, the respective extension elements 44, 46 extend the respective support element 18, 22 in the vertical direction (i.e., z-direction).
  • the extension elements 44, 46 can each also be referred to as intermediate frames. Connecting struts can be provided between the first extension elements 44. More precisely, the two first intermediate elements 44 shown as examples can be connected to one another.
  • Connecting struts can be provided between the second extension elements 46. More specifically, the two first intermediate elements 46 shown as examples can be connected to each other.
  • the extension elements 44, 46 can be fastened to designated locations on the respective support elements 18, 22, for example, using screw and/or plug connections. The insertion of the extension elements 44, 46 can be carried out in such a way that the respective support element 18, 22 is divided at a location provided for this purpose and that the respective extension element 44, 46 is inserted at this location.
  • first extension element 44 and no second extension element 46
  • second support element 22 it may be sufficient to insert a first extension element 44 (and no second extension element 46) if the second support element 22 already originally has a sufficient height and/or if the second support element 22 can be changed in height in another way (e.g. by extending).
  • At least one primary component which is attached to the first support element 18 can have a greater distance from the base element 20 than in the removed state of the first extension element 44.
  • At least one secondary component which is fastened to the second support element 22 can have a greater distance from the base element 20 than in the removed state of the second extension element 46.
  • extension by means of one or more extension elements can serve to increase the maximum possible vertical height of a component 4 to be manufactured.
  • the respective support element 18, 22 can be returned to its original (non-extended) state.
  • a secondary component can be arranged on a removable frame element of the second support element 22 and can be integrated into the second support element 22 together with the removable frame element or removed therefrom again.
  • Figure 4 shows a schematic side view of a device 2 for producing a three-dimensional workpiece 4 using a generative layer construction process with a first and a second support element 18, 22, wherein a coater 10 the device 2 is held by a coating frame 48.
  • the coating frame 48 stands directly on the floor element 20.
  • the weight of the coater 10 is not supported by the first support element 18 or the second support element 22, but is transferred entirely via the coater frame 48 into the base element 20.
  • the coater frame 48 stands on the base element 20.
  • the coater frame 48 is thus (in addition to the first 18 and second 22 support elements) an independent frame element that stands independently on the base element 20.
  • the coater frame 48 can also support one or more additional elements, for example, a horizontal drive of the coater 10.
  • the weight of the coater 10 is not held by the first support element 18 but by the second support element 22.
  • the coater 10 is attached to the second support element 22.
  • the attachment is effected via a holding device 50, which can comprise, for example, a rod, a frame, etc.
  • the weight of the coater 10 is thus transmitted via the second support element 22 into the base element 20.
  • the coater 10 is not connected to the first support element 18.
  • the first support element does not bear any portion of the weight of the coater 10.
  • one or more further elements for example a horizontal drive of the coater 10, can also be held by the second support element 22.
  • the laterally supporting elements do not bear any weight force of the primary components and the secondary components, which are fastened to the first support element 18 and the second support element 22, respectively.
  • the contact area between hemisphere 52 and base plate 40 is minimized—strictly mathematically speaking, it is a single point. This allows the first support element 18 to be thermally and/or mechanically decoupled (e.g., to dampen vibrations) from the base element 20.
  • the base plate 40 can rest, for example, on three or four hemispheres.
  • any other shape can be used for the intermediate element 52, for example, a smaller spherical segment, a pyramid, a cone, or, in particular, shapes that allow contact with the base plate via only one point or a small number of points (e.g., two, three, or four).
  • a support component (not shown) can be provided to support the vertical movement device 24. This can, in particular, serve for lateral support and/or guidance, similar to the lateral support elements described above.
  • a temperature control device (not shown) can be provided for controlling the temperature of the first support element 18 and/or for controlling the temperature of the second support element 22, in particular for heating and/or cooling. This can, for example, prevent thermal stresses.
  • different temperatures can also be set in different regions.
  • cooling can be effected by means of a coolant in one or more regions of the device 2, and gas cooling (in particular air cooling) can be used in other regions of the device 2.
  • At least one damping element may be provided (not shown) to dampen the influence of vibrations of the second support element 22 on the at least one primary component (e.g., irradiation unit 8 and/or process chamber 6).
  • the damping element may be provided in the second support element 22 and/or in a base element 20 connecting the first support element 18 and the second support element 22.
  • the device 2 may comprise at least one horizontal movement device (not shown in Figures 1 to 6) for performing a horizontal movement of at least one component of the device 2.
  • the horizontal movement device may comprise a gantry drive.
  • the horizontal movement is a movement parallel to a surface of the floor element 20.
  • a Cartesian coordinate system may, for example, be defined such that the surface of the floor element 20 lies in the x-y plane and a vertical direction perpendicular thereto is defined as the z-direction.
  • the device 2 may further comprise at least one further vertical movement device for performing a vertical movement of the at least one component of the device 2.
  • the horizontal movement device can comprise the additional vertical movement device.
  • a gantry drive can be provided which, in addition to being able to perform movements within a horizontal plane (e.g., in the x-direction, in the y-direction, or in the x and y directions), is configured to additionally move the at least one component moved by the gantry drive in the horizontal direction (i.e., the z-direction).
  • an x-y-z movement device can be provided which is configured to move the at least one component of the device 2 in all three spatial directions.
  • the at least one component of the device 2 can be positioned precisely and independently of other components of the device 2.
  • the at least one component may comprise the at least one irradiation unit 8 and/or the coater 10.
  • the irradiation unit 8 can be moved horizontally in the x-direction and/or in the y-direction. If the further vertical movement device is provided, the irradiation unit 8 can additionally be moved vertically in the z-direction. This can serve to reach a larger area of the building plate 26, so that an entire surface of the building plate 26 can be selectively irradiated with a single irradiation unit 8. Furthermore, however, several irradiation units 8 (for example 2, 4, 6, 8, 10 or 12) can also be horizontal movement device and/or by the further vertical movement device.
  • the movement of the multiple irradiation units 8 can occur jointly, so that the multiple irradiation units 8 are rigidly coupled to one another. Thus, a large area of the surface of the building panel 26 can be reached.
  • a separate horizontal movement device and/or a separate vertical movement device can also be provided for each of the multiple irradiation units 8, so that the individual irradiation units 8 can be moved horizontally and/or vertically independently of one another. This allows for greater flexibility in reaching individual sections of the building panel 26 to be hardened.
  • the coater 10 can be moved horizontally by the horizontal movement device in order to apply a new powder layer to the build plate 26 or to an underlying powder layer during the horizontal movement across the build plate 26.
  • the coater 10 can be moved vertically by the further vertical movement device, for example, to be lifted between two coating processes.
  • the at least one primary component can comprise the horizontal movement device.
  • the horizontal movement device can be arranged on the first support element 18 and held thereby.
  • the component moved by the horizontal movement device can also be held by the first support element 18 via the horizontal movement device.
  • the horizontal movement device comprises the further vertical movement device
  • the further vertical movement device can also be arranged on the first support element 18 and held thereby.
  • the at least one secondary component may comprise the horizontal movement device.
  • the horizontal movement device may be arranged on the second support element 22 and held by it.
  • the component moved by the horizontal movement device may also be held by the second support element 22 via the horizontal movement device.
  • the horizontal movement device comprises the further vertical movement device
  • the further vertical movement device may be arranged on the second support element 22 and held by it.
  • the horizontal movement device can stand independently on the floor element or be able to be placed thereon.
  • the horizontal movement device can comprise a frame which stands independently on the floor element 20 or can be placed thereon. This frame can thus represent a third support element.
  • the component moved by the horizontal movement device can also be held by this frame via the horizontal movement device.
  • the horizontal movement device comprises the further vertical movement device
  • the further vertical movement device can also be held by the frame.
  • the component moved by the horizontal movement device is the coater 10
  • this option is shown in Fig. 4.
  • Figure 7 shows an embodiment in which a third support element 60 is provided.
  • the third support element 60 is a frame standing independently on the base element 20, comparable to the support elements 18 and 22, which also stand independently on the base element 20.
  • the third support element 60 holds a gantry drive 62.
  • the gantry drive 62 is configured to move two irradiation units 8.
  • the two irradiation units 8 are attached to the gantry drive 62.
  • the gantry drive is configured to move in the x-direction (see arrow).
  • the gantry drive 62 can also be configured to move in the y-direction, so that the two irradiation units 8 can be moved freely in the x-y plane.
  • the gantry drive 62 comprises a further vertical movement device (see vertical arrows), which is configured to move the irradiation units 8 vertically.
  • a focusing function can be carried out or the irradiation units 8 can be raised to disassemble individual components of the device 2.
  • Fig. 7 it is shown that the two irradiation units 8 are moved jointly by the Gangry drive (which can in particular represent an xyz movement device).
  • the Gangry drive which can in particular represent an xyz movement device.
  • an independent horizontal movement device and/or an independent further vertical movement device can be provided, so that the individual irradiation units 8 can be moved horizontally and/or vertically independently of one another.
  • each of the provided horizontal movement devices can be arranged on a frame standing independently on the floor element 20.
  • the plurality of horizontal movement units can also be arranged jointly on the third support element 60 standing independently on the floor element 20.
  • At least two support elements are provided, each of which stands independently of one another on a base element 20 and which support different components of the device 2.
  • the primary components attached to the first support element 18 can be mechanically decoupled from the secondary components attached to the second support element 22.
  • this can result in a change in the weight of a secondary component having no influence on the positioning of the primary components.
  • a vibration of a secondary component cannot cause vibration of the primary components.
  • the primary components can also be thermally decoupled from the secondary components, so that, in particular, heating of a primary component has no influence on the relative positioning of the secondary components and/or heating of a secondary component has no influence on the relative positioning of the primary components.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne un dispositif de fabrication d'une pièce à usiner en trois dimensions au moyen d'un procédé de stratification générative. Le dispositif comprend au moins un composant primaire, ledit composant primaire étant notamment choisi dans la liste comprenant une chambre de traitement du dispositif, au moins une unité d'irradiation du dispositif pour une émission à localisation sélective d'un faisceau de particules ou d'un faisceau laser, au moins une coucheuse pour que le dispositif applique une nouvelle couche de matière première et au moins un verre de protection laser ; au moins un composant secondaire, ledit composant secondaire étant choisi en particulier dans la liste comprenant un récipient de matière première, un moyen de transport de matière première, un récipient de gaz, un moyen de transport de gaz, un élément filtrant, un élément de régulation de température, un capteur et un élément tamis ; au moins un premier élément de support qui est conçu pour transmettre au moins le poids total dudit composant primaire à un élément de base ; et au moins un second élément de support qui supporte ledit composant secondaire et ne supporte pas le poids dudit composant primaire.
PCT/EP2025/054267 2024-02-28 2025-02-18 Dispositif de fabrication d'une pièce à usiner en trois dimensions au moyen d'un procédé de stratification générative Pending WO2025180890A1 (fr)

Applications Claiming Priority (2)

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DE102024105646.0A DE102024105646A1 (de) 2024-02-28 2024-02-28 Vorrichtung zum Herstellen eines dreidimensionalen Werkstücks mithilfe eines generativen Schichtbauverfahrens
DE102024105646.0 2024-02-28

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WO2025180890A1 true WO2025180890A1 (fr) 2025-09-04

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US20180133799A1 (en) * 2016-11-15 2018-05-17 Cl Schutzrechtsverwaltungs Gmbh Apparatus for additive manufacturing of three-dimensional objects
WO2019077512A1 (fr) * 2017-10-17 2019-04-25 Csir Agencement de plateforme de construction pour appareil de fabrication additive
WO2019096421A1 (fr) 2017-11-20 2019-05-23 SLM Solutions Group AG Appareil et procédé de production d'une pièce à travailler tridimensionnelle
EP4116018A1 (fr) * 2017-03-24 2023-01-11 SLM Solutions Group AG Dispositif et procédé de fabrication de pièces tridimensionnelles
US20230035834A1 (en) * 2021-07-27 2023-02-02 Airbus Operations Gmbh Method And Apparatus For The Additive Manufacture Of A Component Within A Receiving Unit Using A Powdery Material
WO2023235497A1 (fr) * 2022-06-03 2023-12-07 Velo3D, Inc. Réglage de système optique
DE102022115097A1 (de) * 2022-06-15 2023-12-21 Nikon Slm Solutions Ag Hubvorrichtung für eine Trägereinrichtung einer Anlage zur additiven Herstellung eines dreidimensionalen Werkstücks

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WO2023239332A1 (fr) 2022-06-07 2023-12-14 Figesfizik Ve Geometride Bilgisayar Simulasyonu Hizmet Ticaret Anonim Sirketi Mécanisme de réglage pour la commutation d'une table vers une position souhaitée selon un plan horizontal
CN116441568A (zh) 2023-04-13 2023-07-18 杭州喜马拉雅信息科技有限公司 一种激光粉末烧结成型机用智能加粉装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180133799A1 (en) * 2016-11-15 2018-05-17 Cl Schutzrechtsverwaltungs Gmbh Apparatus for additive manufacturing of three-dimensional objects
EP4116018A1 (fr) * 2017-03-24 2023-01-11 SLM Solutions Group AG Dispositif et procédé de fabrication de pièces tridimensionnelles
WO2019077512A1 (fr) * 2017-10-17 2019-04-25 Csir Agencement de plateforme de construction pour appareil de fabrication additive
WO2019096421A1 (fr) 2017-11-20 2019-05-23 SLM Solutions Group AG Appareil et procédé de production d'une pièce à travailler tridimensionnelle
US20230035834A1 (en) * 2021-07-27 2023-02-02 Airbus Operations Gmbh Method And Apparatus For The Additive Manufacture Of A Component Within A Receiving Unit Using A Powdery Material
WO2023235497A1 (fr) * 2022-06-03 2023-12-07 Velo3D, Inc. Réglage de système optique
DE102022115097A1 (de) * 2022-06-15 2023-12-21 Nikon Slm Solutions Ag Hubvorrichtung für eine Trägereinrichtung einer Anlage zur additiven Herstellung eines dreidimensionalen Werkstücks

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