EP2869984A1 - Procédé et dispositif de production par couches d'un objet tridimensionnel - Google Patents

Procédé et dispositif de production par couches d'un objet tridimensionnel

Info

Publication number
EP2869984A1
EP2869984A1 EP13752841.0A EP13752841A EP2869984A1 EP 2869984 A1 EP2869984 A1 EP 2869984A1 EP 13752841 A EP13752841 A EP 13752841A EP 2869984 A1 EP2869984 A1 EP 2869984A1
Authority
EP
European Patent Office
Prior art keywords
layer
produced
layers
additional
deformation
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.)
Withdrawn
Application number
EP13752841.0A
Other languages
German (de)
English (en)
Inventor
Gregor SZWEDKA
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.)
EOS GmbH
Original Assignee
EOS GmbH
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 EOS GmbH filed Critical EOS GmbH
Publication of EP2869984A1 publication Critical patent/EP2869984A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • 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
    • B29C64/40—Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
    • 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
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Definitions

  • the invention relates to a method for producing a three-dimensional object by stratified solidification of building material at the corresponding cross-section of the object to be produced in the respective layer bodies by energy input by means of electromagnetic radiation and an apparatus for performing the method.
  • the introduced energy first leads to a - at least partial - liquefaction of the powder grains.
  • the liquefied material areas cool and solidification occurs.
  • the manufactured object Due to the change of introduction of energy, along with a warming and the subsequent cooling phase arise within the object voltages.
  • the manufactured object is subjected to a heat treatment, by means of which the stresses which have arisen during the layered construction are reduced.
  • the known support structures run in the prior art substantially perpendicularly from the stable plate to be produced object.
  • EP 1 720 676 B1 Another disadvantage of this method is the fact that the stresses remain in the object and later, for example, lead in a heat treatment to a deformation can. From EP 1 720 676 B1, it is also known to calculate a compensation data set and / or a compensation function before starting the free-form sintering and / or melting process from the desired value data and optionally from at least one production parameter and to link the compensation data set with the product target geometry data or Apply the compensation function to it to generate the control record.
  • these countermeasures are designed in such a way that the part to be produced receives additional structures with respect to the desired shape of the object to be produced.
  • additional structures can be removed from the object after the heat treatment of the completely manufactured object or - if the additional structure does not disturb the functionality of the object - remain on the object.
  • an additional structure which is located in an inner cavity of the object, remain in this.
  • the objects during the manufacturing process at least temporarily in a plane that contains the axis or parallel to the Z-axis, egg-
  • a plane that contains the axis or parallel to the Z-axis egg-
  • an object whose cross section is "0" shaped after completion, ie "closed” has an "open” approximately "U” shaped cross section during the manufacturing process.
  • Such an object is in this
  • Phase of the manufacturing process endangered by internal stresses to get a delay is, of course, not limited to objects having an "O" -shaped profile
  • the description "0" is merely for the purpose of illustrating a shape of the object in which stresses occur in the interior of the material, but these stresses do not cause any deformation of the object to lead.
  • the inventive method provides, in the manufacture of an object with an open profile at least to provide an additional stiffening element, which forces that occur due to the internal stresses absorbs so that no or minimal deformation of the object to be produced arises.
  • the additional presence of the stiffening element gives the open profile of the article to be manufactured increased stability against deformation.
  • FIGS. 1 and 2 show an object to be produced with supporting structures according to the prior art in a sectional representation
  • the object to be produced 1 was prepared in a known manner in layers by selective melting and subsequent solidification of powdered material.
  • the Obekt 1 is surrounded on all sides in a known manner by loose powder.
  • the object 1 is connected to a base plate 3.
  • the manufacturing process begins by a first powder layer is applied to the base plate 3.
  • the selective melting and cooling begins at the locations corresponding to the cross-section of the support structure 2. This process is repeated for a variety of layers.
  • the individual layers are arranged in the direction of the axis Z to each other. From a certain number of layers, the production of the actual object 1 begins.
  • the object 1 has a cross-section in the Z direction approximately up to the position n2, which is flat in the region 1a. From about the position n2 to the position n3, the area lb, which is numbered 1b, extends essentially vertically upwards. As a result of the frequent heating and cooling processes occurring for each layer n, an internal stress is created in the object 1 which generates a force F in the direction of the arrows F. This force F can disadvantageously lead to a deformation of the areas 1 b of the object 1.
  • the method calculates the force F both in consideration of the partial volume of the object 1, which has been solidified in the previous layers as well as taking into account the part volume of the object 1 which will be solidified in the following layers.
  • FIG. 2 shows a solution according to the prior art, in which the outgoing of the base plate 3 support structure 2 has additional structural elements 2a, which end in the area lb of the object 1. These structural elements 2 a can absorb tensile forces which counteract the force P and can thus counteract the deformation of the object 1.
  • the structural elements 2a extend substantially perpendicularly from the base plate 3 to the object 1.
  • FIG. 3 shows an embodiment according to the invention, in which the object 1 is connected as usual via the support structure 2 with the bottom plate 3.
  • a plurality of additional structures 4 have been produced, which are generated substantially horizontally and thus substantially parallel to the course of the layers.
  • the production of the respective additional structures 4 has already been started in the example shown in each case already in a layer in which no internal stress leading to deformation occurs in the object 1. Due to the principle of layer-by-layer production, the horizontally extending additional structures 4 also require perpendicular support elements in order to ensure manufacturability.
  • several additional structures 4 are arranged one above the other. These additional structures 4 are cascaded supported by vertically extending support elements. For reasons of clarity, however, the representation of these vertical support elements has been omitted.
  • the existing additional structures 4 prevent deformation of the object 1. Due to the additional structures 4 can be reduced in an advantageous manner, if necessary, the number of structural elements 2a.
  • the area ld has a relative to the remaining areas of the object 1, a relatively large volume.
  • the calculated internal stresses are therefore higher in the region ld than in the other regions of the object 1. Accordingly, the additional structure 4 is made relatively massive.
  • the inventive method provides that the dimensions of the additional structures 4 are calculated so that as little material as necessary is used, but the additional structures are always sufficiently stable.
  • the area le projects beyond the remaining areas of the object 1 and therefore it is not possible to support this area le by a horizontally extending additional structure 4.
  • the region le is inclined inwardly, i. out of reach for a vertically emanating from the base plate 3 structural element 2a.
  • the invention provides
  • This additional structure 5 is removable after the heat treatment of the finished manufactured object 1.
  • the method finds application in a device which selectively solidifies material layer by layer.
  • the device comprises a baseplate (3) on which the object (1) is built up in layers, a device by which material layers on the base plate or a previously provided layer of the material is provided, an energy source by which energy in a previously applied layer of the building material and a control unit for controlling the provision of a layer and the introduction of the energy.
  • the calculation at which points the additional structures 4 and 5 are attached to the object 1 is carried out by a computer program.
  • This computer program controls a control unit with a CPU.
  • the control unit in turn controls the energy input by means of electromagnetic
  • a predetermined deformation of the object which has this after the layered production, may be intended.
  • Such a functional deformation is precalculated in such a way that the geometry of the object 1 exhibits this deformation before cooling and uncoiling from the powder bed.
  • the deformation is also predetermined so that the object identifies the desired geometric result, ie its desired shape, after a subsequent heat treatment.
  • the calculation of the deformation due to the stresses occurring within the object 1 not only, as described above, enter the volume or partial volumes of the object 1, but it can also in addition to other processes that after solidification of last layer of the object 1, to be included in the calculation. These processes include, for example, cooling the object 1, removing the support structure 2, the structural elements 2a and / or the additional structures 4, 5, as well as a heat treatment.
  • a heat treatment is performed on the separately present object.
  • the remaining additional structures 4, 5 in this case represent an additional stiffening of the object 1, which prevent deformation of the object 1 during the heat treatment.
  • the additional structures prevent or minimize deformation, in particular distortion during the heat treatment.
  • the additional structures can be predetermined in such a way that any deformation of the object produced during a heat treatment is prevented or minimized.
  • the removal of the additional structures 4, 5 takes place only after the heat treatment, wherein an additional structure that does not interfere with the functionality of the object can also remain on the object.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Powder Metallurgy (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Producing Shaped Articles From Materials (AREA)

Abstract

L'invention concerne un procédé de production d'un objet tridimensionnel (1) par solidification par couches d'un matériau de construction aux endroits correspondant à la section transversale de l'objet (1) à produire dans la couche respective, par apport d'énergie à l'aide d'un rayonnement électromagnétique, un calcul étant effectué quant aux contraintes qui apparaissent à l'intérieur de l'objet (1) pendant la production par couches et, lors du dépassement d'une valeur seuil, l'objet à produire recevant des structures additionnelles (4,5) par rapport à la forme théorique de l'objet à produire (1).
EP13752841.0A 2012-07-06 2013-07-05 Procédé et dispositif de production par couches d'un objet tridimensionnel Withdrawn EP2869984A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012013318.9A DE102012013318A1 (de) 2012-07-06 2012-07-06 Verfahren und Vorrichtung zum schichtweisen Herstellen eines dreidimensionalen Objekts
PCT/EP2013/064287 WO2014006192A1 (fr) 2012-07-06 2013-07-05 Procédé et dispositif de production par couches d'un objet tridimensionnel

Publications (1)

Publication Number Publication Date
EP2869984A1 true EP2869984A1 (fr) 2015-05-13

Family

ID=49034049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13752841.0A Withdrawn EP2869984A1 (fr) 2012-07-06 2013-07-05 Procédé et dispositif de production par couches d'un objet tridimensionnel

Country Status (4)

Country Link
US (1) US10220576B2 (fr)
EP (1) EP2869984A1 (fr)
DE (1) DE102012013318A1 (fr)
WO (1) WO2014006192A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9925724B2 (en) 2014-07-03 2018-03-27 United Technologies Corporation Additive manufacturing system and method of additive manufacture utilizing layer-by-layer thermo-mechanical analysis
WO2016010536A1 (fr) 2014-07-16 2016-01-21 Hewlett-Packard Development Company, L.P. Consolidation d'un substrat de matériau de construction destiné à la fabrication additive
DE102014214689A1 (de) * 2014-07-25 2016-01-28 Bayerische Motoren Werke Aktiengesellschaft Verfahren für die Herstellung eines Ventilkörpers eines Ventils einer Brennkraftmaschine
EP3206861B1 (fr) * 2014-10-15 2024-08-07 The Exone Company Procédés permettant de commander le gauchissement de cavités d'articles imprimés en trois dimensions lors d'un traitement thermique
US10660763B2 (en) 2015-01-27 2020-05-26 K2M, Inc. Spinal implant
US10028841B2 (en) 2015-01-27 2018-07-24 K2M, Inc. Interbody spacer
US10959855B2 (en) 2017-05-25 2021-03-30 Stryker European Holdings I, Llc Fusion cage with integrated fixation and insertion features
US11006981B2 (en) 2017-07-07 2021-05-18 K2M, Inc. Surgical implant and methods of additive manufacturing
US20190126558A1 (en) 2017-11-02 2019-05-02 Eos Gmbh Electro Optical Systems Method and assembly for generating control data for the manufacture of a three-dimensional object by means of an additive manufacturing method
US10359764B1 (en) * 2017-12-29 2019-07-23 Palo Alto Research Center Incorporated System and method for planning support removal in hybrid manufacturing with the aid of a digital computer
US11434772B2 (en) 2020-09-29 2022-09-06 General Electric Company Turbine nozzle and method of manufacture
US11939878B1 (en) 2022-12-15 2024-03-26 Ge Infrastructure Technology Llc Turbomachine component having self-breaking supports
US11920794B1 (en) 2022-12-15 2024-03-05 Ge Infrastructure Technology Llc Combustor having thermally compliant bundled tube fuel nozzle

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511772C2 (de) 1995-03-30 1997-09-04 Eos Electro Optical Syst Vorrichtung und Verfahren zum Herstellen eines dreidimensionalen Objektes
DE19606128A1 (de) * 1996-02-20 1997-08-21 Eos Electro Optical Syst Vorrichtung und Verfahren zum Herstellen eines dreidimensionalen Objektes
US6936212B1 (en) * 2002-02-07 2005-08-30 3D Systems, Inc. Selective deposition modeling build style providing enhanced dimensional accuracy
US6907307B2 (en) * 2002-07-02 2005-06-14 3D Systems, Inc. Support volume calculation for a CAD model
DE102004009126A1 (de) 2004-02-25 2005-09-22 Bego Medical Ag Verfahren und Einrichtung zum Erzeugen von Steuerungsdatensätzen für die Herstellung von Produkten durch Freiform-Sintern bzw. -Schmelzen sowie Vorrichtung für diese Herstellung
DE102005024790A1 (de) 2005-05-26 2006-12-07 Eos Gmbh Electro Optical Systems Strahlungsheizung zum Heizen des Aufbaumaterials in einer Lasersintervorrichtung
DE112007002411T5 (de) * 2006-10-10 2009-07-30 Shofu Inc. Datenerzeugungssystem, Herstellungsverfahren und modelldatenerzeugendes Programm
GB0715621D0 (en) * 2007-08-10 2007-09-19 Rolls Royce Plc Support architecture
EP2203297B1 (fr) 2007-09-17 2012-05-16 3D Systems, Inc. Supports par zones pour pièces produites par fabrication de formes libres solides
DE102007059865A1 (de) * 2007-12-12 2009-06-18 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines Formkörpers durch schichtweises Aufbauen aus pulverförmigem, metallischen Werkstoff
US20130124151A1 (en) * 2011-08-26 2013-05-16 Radomir Mech Methods and Apparatus for Printability of Three-Dimensional Objects

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014006192A1 *

Also Published As

Publication number Publication date
WO2014006192A1 (fr) 2014-01-09
US10220576B2 (en) 2019-03-05
DE102012013318A1 (de) 2014-01-09
US20150142158A1 (en) 2015-05-21

Similar Documents

Publication Publication Date Title
WO2014006192A1 (fr) Procédé et dispositif de production par couches d'un objet tridimensionnel
EP3552804B1 (fr) Procédé de fabrication d'un objet tridimensionnel
DE102008031925B4 (de) Duales Herstellungsverfahren für Kleinserienprodukte
EP3259381B1 (fr) Procédé pour la fabrication d'un élément par pulvérisation thermique et installation pour la fabrication d'un élément au moyen d'un dispositif pour la pulvérisation thermique
EP3606756B1 (fr) Procédé de fabrication additive d'un composant tridimensionnel
DE102014003441B4 (de) Verfahren zum Ausbilden eines Triebelements und Triebelement
EP3621758B1 (fr) Procédé pour un élément à fabriquer de manière additive présentant une structure superficielle prédéfinie
DE102017213720A1 (de) Optimiertes Segmentierungsverfahren
EP2829338A2 (fr) Dispositif d'application laser et procédé de fabrication d'un composant à l'aide d'application laser directe
DE102016201369A1 (de) Vorrichtung, Anlage und Verfahren zur additiven Herstellung eines Bauteils
EP3338918A1 (fr) Dispositif de fabrication en couche et procédé de fabrication en couche destinés à la fabrication additive d'au moins une partie d'un composant
DE102017201084A1 (de) Verfahren zur additiven Herstellung und Beschichtungsvorrichtung
WO2015091941A1 (fr) Dispositif de fabrication d'un objet tridimensionnel par fixage magnétique de la base de construction
WO2012062253A2 (fr) Dispositif pour produire, réparer et/ou remplacer une pièce structurale à l'aide d'une poudre durcissable sous l'action d'un rayonnement énergétique, ainsi qu'un procédé et une pièce structurale produite selon ce procédé
EP4051843B1 (fr) Procédé de fabrication d'un corps d'assemblage d'un élément d'assemblage pour une construction de poteaux-traverses ou de barres
DE102011121568A1 (de) Verfahren und Herstellung von dreidimensionalen Objekten durch aufeinanderfolgendes Verfestigen von Schichten eines pulverförmigen Aufbaumaterials
EP3349926B1 (fr) Presse pour pièce frittée et son procédé
DE102016015543A1 (de) Verfahren zur Auslegung eines Umformwerkzeugs für eine Umformpresse
DE102010024226A1 (de) Verfahren und Vorrichtung zur Herstellung oder Reparatur von Bauteilen, insbesondere Bauteilen von Strömungsmaschinen, mittels eines generativen Herstellungsverfahrens
AT523693B1 (de) Verfahren zur Herstellung eines dreidimensionalen Bauteils
EP4151339A1 (fr) Composant fabriqué de manière additive pourvu de filetage d'insertion, son procédé de fabrication, ainsi que composant pourvu d'insert de filetage en fil métallique installé dans le filetage d'insertion
EP3416813B1 (fr) Outil d'usinage et son procédé de fabrication au moyen d'un processus de fabrication par couches génératif
DE102019133979A1 (de) Verfahren zum Laserauftragschweißen mit granularem Zusatzwerkstoff
DE102016115916A1 (de) Verfahren zur Erzeugung von Bearbeitungsdaten zur Herstellung von Zahnprothesen mit einer keramischen Verblendschale und einem Träger
DE102022103886A1 (de) Vorrichtung zur Herstellung eines Zahnradgrünlings

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150202

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: REISCHLE, GREGOR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20170118

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200603