EP0634972A1 - Procede et dispositif de fabrication d'objets tridimensionnels - Google Patents

Procede et dispositif de fabrication d'objets tridimensionnels

Info

Publication number
EP0634972A1
EP0634972A1 EP94904613A EP94904613A EP0634972A1 EP 0634972 A1 EP0634972 A1 EP 0634972A1 EP 94904613 A EP94904613 A EP 94904613A EP 94904613 A EP94904613 A EP 94904613A EP 0634972 A1 EP0634972 A1 EP 0634972A1
Authority
EP
European Patent Office
Prior art keywords
layer
solidified
beams
mirrors
radiation
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Withdrawn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
EP94904613A
Other languages
German (de)
English (en)
Inventor
Johannes Reichle
Hans J. Langer
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 EP0634972A1 publication Critical patent/EP0634972A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70—Microphotolithographic exposure; Apparatus therefor
    • G03F7/70416—2.5D lithography
    • 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
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
    • B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/0037—Production of three-dimensional images
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0011—Working of insulating substrates or insulating layers

Definitions

  • the invention relates to a method and a device for producing a three-dimensional object according to the preamble of claim 1 and claim 10.
  • Such a method or device is known from EP-A-0 171 069.
  • the carrier is lowered in a bath of liquid, polymerizable plastic, so that a layer of liquid plastic can form, and this layer is then polymerized or solidified at the corresponding points on the object by irradiation with a laser beam. Since the polymerization requires a certain reaction time, the laser beam cannot be guided over the layer as quickly as desired, so that the production time cannot be shortened as desired.
  • the object of the invention is to reduce the time required for producing the object.
  • a container 1 which is open on its upper side is filled up to a level or a surface 2 with a light-curable, liquid plastic material 3.
  • a support 4 in the area of the plastic 3 with an essentially flat and horizontal support plate 5, which is arranged parallel to the surface 2 and by means of a schematically indicated height adjustment device 6 in the direction perpendicular to the surface 2 or to Carrier plate 5 can be moved and positioned.
  • the height adjustment device is connected to a controller 7 for controlling the displacement position.
  • the object 8 which is constructed from a plurality of layers 8a, 8b, 8c and 8d in the manner described later, is located on the carrier plate.
  • An irradiation device 9 for solidifying the uppermost layer 8d adjoining the surface 2 contains an illumination device 10 with a radiation source 11, which generates a focused beam 13 via optics 12.
  • the radiation source 11 is preferably a light source such as e.g. a laser, but can also be any other source of electromagnetic radiation.
  • a plurality of, for example three, in each case partially radiation-permeable mirrors 14, 15, 16 are arranged one behind the other in the direction of the beam 13, each of which is gimbally suspended independently of one another and corresponds to this ⁇ corresponding schematically indicated control devices 17, 18, 19 can be pivoted such that the beam 13 incident on the mirrors 14, 15, 16 is independent of the mirrors 14, 15, 16 as a reflected beam 20, 21, 22 within certain areas of the surface 2 can be positioned.
  • two rotating mirrors, one for each coordinate direction can be used in a known manner.
  • control devices 17, 18, 19 are each connected to the controller 7 for controlling the direction of the beams 20, 21, 22.
  • the data about the shape of the object 8, which was created on the basis of a construction program or the like, are first stored in the controller 7. These data are prepared for the production of the object 8 in such a way that the object is broken down into a plurality of horizontal layers which are thin in comparison to the object dimension and the shape data are available for each layer.
  • the controller 7 controls the height adjustment device 6 such that the surface of the carrier plate 5 is positioned below the surface 2 at a predetermined height corresponding to the thickness of the layer 8a.
  • the controller 7 controls the height adjustment device 6 such that the surface of the carrier plate 5 is positioned below the surface 2 at a predetermined height corresponding to the thickness of the layer 8a.
  • the control device 7 controls the lighting device 9 and in particular the control devices 17, 18, 19 in such a way that the beam 20, 21, 22 reflected by each corresponding mirror 14, 15, 16 strikes predetermined areas of the layer 8a and thus solidified these areas.
  • an edge region of the layer 8a can be solidified by a first beam 21 deflected by the central mirror 15 and the central region of the layer 8a by the two other beams 20, 22.
  • the edge region is solidified in a closed train, which enables an improved, in particular smoother surface of the object without offset.
  • the inner region can then be solidified by the other steels 20, 22 in such a way that these beams alternately sweep along adjacent linear regions or each beam 20, 22 solidifies a separate area or a separate field of the layer. In the latter
  • the mirrors 14 and 16 only have to have a smaller working area or that the size of the layer which can be solidified is increased for the same working area of the mirror. It is important in any case that due to the simultaneous irradiation by means of the beams 20, 21, 22, a plurality of areas corresponding to the number of beams are solidified at the same time, so that the layer 8a is produced in a shortened time despite the constant reaction time of the material.
  • the height adjustment device 6 is lowered by the controller 7 by the amount of the intended thickness of the second layer 8b, so that a liquid layer with the thickness of the second layer 8b forms on the first layer 8a. Thereafter, the control devices 17, 18, 19 are controlled analogously to the first layer to solidify the second layer. The following layers 8c, 8d are produced accordingly.
  • a plurality of radiation sources 11 can also be used be provided in each case an associated mirror or a deflection device for the light beam.
  • a particularly advantageous modification of the described device also consists in that a radiation source and 5 mirrors are provided, four mirrors being arranged in a ring around a fifth, central mirror.
  • Each mirror is provided with a corresponding control or deflection device for the respective light beam and is controlled by the controller 7 to solidify individual areas of the layers 8a ... 8d. It is particularly advantageous if the central mirror is controlled in such a way that it takes over the consolidation of the edge region of the layer in accordance with the mirror 15.
  • the division of the beam 13 and the separate deflection of the partial beams can also be achieved by a plurality of light guides, in one end of which the beam 13 enters and the other end by means of a known x, y shifting device in accordance with Rays 20,21,22 is guided over the surface.
  • Further possible modifications consist in the fact that plastic, metal or plastic-coated metal or ceramic powders are also used instead of the liquid plastic. All suitable methods such as scattering and spraying devices, wipers, rollers etc. can be used to apply a layer of this material. Depending on its properties, the material can also be solidified by other forms of electromagnetic radiation, such as an electron beam or thermal radiation.

Abstract

Un procédé pour la fabrication d'objets par consolidation par couches de l'objet au moyen d'un rayonnement électromagnétique est accéléré si l'on consolide simultanément en plusieurs points la matière qui compose une couche. L'exécution de ce procédé peut se faire à l'aide d'un dispositif d'irradiation (11, 12, 14, 15, 16) produisant des rayons multiples (20, 21, 22), ainsi que d'un dispositif de commande (7, 17, 18, 19) qui oriente chacun desdits rayons indépendamment des autres sur différentes zones de la couche considérée (8a..8d).
EP94904613A 1993-01-28 1993-12-30 Procede et dispositif de fabrication d'objets tridimensionnels Withdrawn EP0634972A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4302418 1993-01-28
DE4302418A DE4302418A1 (de) 1993-01-28 1993-01-28 Verfahren und Vorrichtung zum Herstellen eines dreidimensionalen Objekts
PCT/EP1993/003724 WO1994016875A1 (fr) 1993-01-28 1993-12-30 Procede et dispositif de fabrication d'objets tridimensionnels

Publications (1)

Publication Number Publication Date
EP0634972A1 true EP0634972A1 (fr) 1995-01-25

Family

ID=6479152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94904613A Withdrawn EP0634972A1 (fr) 1993-01-28 1993-12-30 Procede et dispositif de fabrication d'objets tridimensionnels

Country Status (5)

Country Link
US (1) US5536467A (fr)
EP (1) EP0634972A1 (fr)
JP (1) JPH07501998A (fr)
DE (1) DE4302418A1 (fr)
WO (1) WO1994016875A1 (fr)

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Also Published As

Publication number Publication date
JPH07501998A (ja) 1995-03-02
US5536467A (en) 1996-07-16
DE4302418A1 (de) 1994-08-11
WO1994016875A1 (fr) 1994-08-04

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