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WO2011064725A1 - Procédé et appareil de fabrication en couches d'artéfacts - Google Patents

Procédé et appareil de fabrication en couches d'artéfacts Download PDF

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Publication number
WO2011064725A1
WO2011064725A1 PCT/IB2010/055393 IB2010055393W WO2011064725A1 WO 2011064725 A1 WO2011064725 A1 WO 2011064725A1 IB 2010055393 W IB2010055393 W IB 2010055393W WO 2011064725 A1 WO2011064725 A1 WO 2011064725A1
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WO
WIPO (PCT)
Prior art keywords
particulate material
layer
dispensing
fusion
artefact
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.)
Ceased
Application number
PCT/IB2010/055393
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English (en)
Inventor
Paul Potgieter
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.)
Aerosud Innovation & Training Centre Pty Ltd
Original Assignee
Aerosud Innovation & Training Centre Pty Ltd
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
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Application filed by Aerosud Innovation & Training Centre Pty Ltd filed Critical Aerosud Innovation & Training Centre Pty Ltd
Publication of WO2011064725A1 publication Critical patent/WO2011064725A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B29C64/10—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
    • 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
    • B33Y10/00—Processes of additive manufacturing
    • 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

Definitions

  • This invention relates to a method and apparatus for layer manufacturing of three dimensional artefacts.
  • fuse or "fused” includes within its meaning sintering, partial fusing and complete fusing.
  • a first known process for layer manufacturing of a pre-designed geometric artefact or a three dimensional so-called "near net shape" object includes the steps of building up the artefact by consecutively fusing fusible particulate material deposited in superimposed layers with a laser beam.
  • a computer controls the deposit of the layers and the fusing by the laser beam, in accordance with a computer-aided design.
  • fusible particles such as Polyamide, titanium and its alloys, advanced ceramics, nickel and cobalt and their alloys, aluminium, as well as blends of different powders, to name but a few, could be used.
  • the particulate material is disposed in a reservoir or hopper having an elongate outlet, positioned in closely spaced relationship relative to a surface or a plane on which the artefact is to be formed or a previously fused layer.
  • the space between the outlet and the surface determines the thickness of the layer to be fused that is deposited on the surface.
  • the hopper is moved relative to the surface in a first direction, whilst depositing the layer on the surface.
  • the laser beam is directed onto the layer in accordance with a pre-programmed pattern, which is determined by the design of the artefact. After depositing the layer, the deposited particles are fused by the laser in accordance with the shape of the artefact to be formed. Subsequently another layer is deposited and fused, so that the artefact is built up layer by layer.
  • An advantage of the known process over the conventional methods of manufacture is that artefacts having highly complicated shapes, could be manufactured without any or with minimal subsequent machining. Artefacts manufactured with this technology are typically geometrically complex or difficult if not impossible to viably manufacture with another method. In addition, net or near-net shaped artefacts could be formed from materials that are difficult to machine, owing to its hardness or toughness, for example.
  • a disadvantage of the known process of layer manufacture is that the rate of manufacture is relatively slow, owing to the configuration of the hopper and the fact that the hopper would typically dispense the layer only when moving in one direction over the surface.
  • a further disadvantage is that the manipulation of the prior art laser is electro-mechanical, which is considered restrictive in terms of the speed of the manufacturing process.
  • a further disadvantage suffered by the above method and apparatus is that, owing to the temperature differential or gradient between the artefact being formed and its environment, distortion of the artefact occurs. This is undesirable, as distorted machine components would not be up to specification and would have to be discarded, particularly in precision tooling and machine components having movable parts.
  • a major disadvantage of distortion owing to temperature differentials between the fused particulate material and its environment is that a relatively thin layer of the fused material would curl up and thus interfering with the outlet of the hopper moving over the layer depositing a subsequent layer.
  • the space between the outlet of the hopper and the surface on which the particulate material is deposited and thus the thickness of the layers is 0.1 mm and even the slightest curling or distortion of the artefact would cause an interference with the outlet moving over the layer, whilst depositing a subsequent layer.
  • the distortion severely limits the potential of forming relatively complicated artefacts, without providing additional internal support structures not forming part of the original design. These internal support structures, which limit the distortion of the fused layer of particles, have to be machined away afterwards [or otherwise removed], adding to the time and cost of manufacture. In certain instances, the support structures are not accessible after manufacture and cannot be removed easily.
  • a second known process of direct manufacture utilises an electron beam instead of a laser beam.
  • An advantage of this process is that, owing to the relatively higher energy density, the likelihood of the fusing together of the particles is increased.
  • a disadvantage of this process is that the process has to take place in vacuum and the manufacture of relatively larger artefacts are therefore not practical or economically viable, owing the relative size of the vacuum chamber that would be required for manufacturing relatively larger objects.
  • a method for the layer manufacture of a three dimensional artefact through heat fusion of heat fusible particulate material including the steps of:
  • the deflector member may comprise a wheel, having a plurality of deflecting and/or reflecting surfaces arranged about its outer circumference, and the step of controlling the movement of the deflector member may include the further step of continuously varying the angle of deflection/reflection of the energy beam onto the surface by rotating the wheel whilst directing the beam onto the deflecting/reflecting surfaces.
  • the step of controlling the movement of the deflector member may include the further step of controlling the motion and speed of the wheel electronically.
  • the method may include the further step of controlling the switching of the energy beam onto the deflector.
  • the method may further include the step of elevating the temperature of at least the immediate environment in which the fusion takes place, towards the fusion temperature of the particles, but adequately below the fusion temperature of the particulate material, such that after fusion of the particles, heat energy would dissipate from the material into the said environment sufficiently for the fused material to acquire dimensional stability.
  • the method may include the further step of extracting fumes from the environment in which fusion takes place.
  • the step of providing the dispensing means may include the steps of providing a first dispensing outlet for depositing a first layer of the heat fusible particulate material and a second dispensing outlet for depositing a second layer of the heat fusible material whilst moving the support surface in first and second directions respectively.
  • the reciprocal movement of the support surface may continue in the first and second directions respectively, whilst dispensing the particles and fusing said particles when the surface is moved in both directions, such that subsequent superimposing layers are formed and fused to the previous layer to form the artefact.
  • the first and second outlets and the energy beam may constitute a first modular unit and the method may include the further steps of adding similar modular units in accordance with the relative size of the artefact to be formed.
  • an apparatus for the layer manufacture of three dimensional artefacts through heat fusion of heat fusible particulate material in accordance with a computer aided design, including:
  • dispensing means for depositing a layer of said heat fusible particulate material onto the surface
  • controlling means for controlling the movement of the deflector member to deflect the energy beam and move it along the dispensed particulate material so as to fuse the particulate material along a predetermined fusion path.
  • the moveable deflector may be a rotating deflector that may rotate on a fixed axis.
  • the rotating deflector may be in a form adapted to facilitate deflection over the entire width of the bed.
  • the outward facing sides of the rotating deflector may be made of a reflective material.
  • the path of the energy beam may be altered through a combination of deflective and/or refractive media.
  • a driving means may drive the rotation of the deflector.
  • the energy beam may be provided by an energy beam source situated in a fixed position relative to the rotating deflector.
  • the energy beam source may be in the form of a first modular laser beam unit and the apparatus may include additional removable modular laser units that may be added to the first unit, depending on the width of the artefact to be formed.
  • the apparatus may include a first moving means for moving the dispensing means and the support surface relative to one another in a first plane. Movement in the first plane may be lateral movement.
  • the apparatus may include a second moving means for moving the dispensing means and the support surface relative to one another in a second plane.
  • Movement in the second plane may be vertical movement.
  • the controlling means may be in the form of a computer aided program.
  • the dispensing means may include first and second spaced apart hoppers each having a dispensing outlet for respectively dispensing the particulate material when the surface is moved in the said first and second directions, to form superimposed layers.
  • the energy beam source may be disposed between the first and second hoppers such that the particles in the deposited layers are fused to each other and to the previously deposited and fused layer whilst the surface is moving in the said first and in the second directions respectively, thus to form the artefact layer by layer.
  • the dispensing means may be adapted to depose a second layer of said heat fusible particulate material on top of the first layer whilst the support surface is moved in a second direction relative to the dispensing means opposite to the first direction, to allow the heat fusion by the energy beam of the particles in the second layer to each other and to the first layer whilst the support surface moves in the said second direction.
  • the dispensing means may be in the form of a first modular dispensing unit and the apparatus may include similar additional modular dispensing units that may be added to the first dispensing unit, depending on the width of the artefact to be formed.
  • the apparatus may include heating means and temperature control means for elevating the temperature of at least the immediate environment in which the fusion takes place, towards the fusion temperature of the particles, but adequately below the fusion temperature of the particulate material, such that after fusion of the particles, heat energy would dissipate from the material into the said environment sufficiently for the fused material to acquire dimensional stability.
  • the heating means may include a heat source such as an electrical element, induction heater, laser or gas burner and may further include a method for monitoring and controlling the temperature inside the chamber.
  • a heat source such as an electrical element, induction heater, laser or gas burner and may further include a method for monitoring and controlling the temperature inside the chamber.
  • the apparatus may further include insulating walls defining a chamber at least partially enclosing the support surface and dispensing means.
  • the apparatus may further include a cover plate located between the two hoppers, enclosing the area between the two hoppers, the arm and the surface.
  • the cover plate may define an aperture in the form of a slot through which the laser beam may pass.
  • the aperture may be enclosed by an optical window.
  • the apparatus may further include a fume extractor for extracting fumes from the environment in which fusion takes place.
  • a three dimensional artefact manufactured by a method according to the first aspect of the invention; or an apparatus according to the second aspect of the invention.
  • figure 1 is a perspective view of an apparatus according to a preferred embodiment of the invention, for layer manufacturing of a three dimensional artefact through the heat fusion of heat fusible particulate material, in accordance with a computer aided design;
  • figure 2 is a semi-transparent view of figure 1 ;
  • figure 3 is a diagrammatical representations of the said apparatus, shown in cross-section along line X-X in figure 1 , the said apparatus being disposed in a thermally insulated heating chamber;
  • figure 4 is also a diagrammatical representations of the said apparatus, shown in cross-section along line X-X in figure 1 ;
  • figure 5 is a cross-sectional perspective view along line Y-Y' in figure 1 ;
  • figure 6 is a cross-sectional end view along line Y-Y' in figure 1 ;
  • figure 7 is the same view as that of figure 5, showing successive layers of an artefact being formed with the said apparatus;
  • figure 8 is also the same view as that of figure 5, showing successive layers of an artefact being formed with the said apparatus.
  • an apparatus according to a preferred embodiment of the invention for layer manufacturing of a three dimensional artefact through the heat fusion of heat fusible particulate material, in accordance with a computer aided design is generally designated by reference numeral 10.
  • the apparatus 10 includes a support surface 12 for supporting an artefact 14 (figures 3 to 8) to be formed; and dispensing means 16, in the form of elongate spaced apart first and second hoppers 16.1 and 16.2 respectively, for containing and dispensing heat fusible particulate material 18 and for depositing a layer of said material 18 onto the surface 12.
  • the apparatus 10 also includes an energy beam source 20 in the form of a laser and lens unit disposed between the hoppers 16.1 and 16.2, for emitting a laser beam 22.
  • the apparatus 10 further includes a movable deflector member in the form of a rotating wheel 24 for deflecting the laser beam 22 and moving it along the dispensed particulate material 8 so as to fuse the particulate material 18 along a predetermined fusion path.
  • a movable deflector member in the form of a rotating wheel 24 for deflecting the laser beam 22 and moving it along the dispensed particulate material 8 so as to fuse the particulate material 18 along a predetermined fusion path.
  • the hoppers 16.1 and 16.2, with particulate material 18, the laser beam source 20 and the rotating wheel 24 are all mounted on an arm 26, so that they are fixed relative to one another.
  • the supporting surface 12 is adapted to move horizontally in a first and a second direction relative to the arm 26, as indicated by arrows A and B, as well as vertically in a first and second direction, as indicated by arrows C and D in the drawings.
  • the distance of the movement of the support surface 12 in the said directions are variable in accordance with the required length, height and thus size of the artefact to be formed.
  • the artefact to be formed could thus be of any size, since the support surface 12 is movable in the said directions.
  • the hoppers 16.1 and 16.2 are provided with elongate dispensing outlets 16.3 and 16.4 respectively, for dispensing the particulate material 18 onto the surface 12 in a relatively thin layer 18. .
  • Layer thickness is governed by the specific material employed. However, depending on the type and size of the artefact to be manufactured, the thickness of the layer 18.1 could be varied.
  • the hoppers 16.1 and 16.2 are positioned on either side of the laser beam 22 to allow for adequate depositing and subsequent fusion of particulate material 18.
  • the hopper outlets 16.3 and 16.4 are closely spaced from the support surface 12 or from a previously deposited and fused layer 18.1.
  • the distance between the outlets 16.3 and 16.4 and the support surface 12 or previously fused layer 18.1 determining the thickness of the layer to be deposited, as is illustrated in figures 3 and 4.
  • a cover plate 17 is located between the two hoppers 16.1 and 6.2.
  • the cover plate 17 defines an aperture in the form of a slot 17.1 , through which the laser beam 22 passes.
  • the cover plate 17 encloses the area between the two hoppers 16.1 and 16.2, the arm 26 and surface 12.
  • Access for environmental control 19 is provided in the enclosed area to regulate/control the environment in which fusion takes place.
  • the environmental control access 19 is located within the area, which is closed of by the cover plate 17.
  • the addition of the cover plate 17 thus allows easy environmental control to take place, since the area is enclosed.
  • the rotating wheel 24 includes a plurality of deflecting surfaces 24.1 , as shown in figure 6, arranged about its outer circumference.
  • the surfaces 24.1 are made of a reflective material to adequately deflect the laser beam 22 onto the dispensed particulate material 18.
  • the rotating wheel 24 rotates on an axis that is parallel to the direction A - B.
  • the direction of the laser beam 22 is constant relative to the axis of rotation of the rotating wheel 24. Therefore, directing the laser beam 22 onto the rotating wheel 24 continuously varies the angle of deflection of the laser beam 22 by the deflecting surfaces 24.1.
  • a driving means in the form of a motor (not shown) rotates the wheel 24.
  • the motion and speed of the wheel 24 is controlled electronically by a controlling means (not shown) by a computer aided program.
  • the movement of the support surface 12 relative to the arm 26 is controlled by a control means (not shown) typically in the form of a computer aided program.
  • the control means further controls the driving means, and subsequently the speed of rotation of the wheel 24, as well as the switching between on and off conditions and deflection of the laser beam 22 from the laser beam unit 20 in accordance with the dimensions and specifications of the artefact to be manufactured.
  • the hopper outlets 16.3 and 16.4 are positioned in close proximity to the support surface 12, the space between them being automatically selected by the control means in accordance with the thickness of a layer 18.1 of particulate material 18 to be deposited onto the surface 12.
  • the support surface 12 is moved in the first direction A relative to the dispensing outlets 16.1 and 16.2 whilst the heat fusible particulate material 18 is dispensed from the elongate outlet opening 16.3 of hopper 16.1 to form a first layer 18.1 of particulate material 18 on the surface 12.
  • the layer 18.1 itself would limit deposit of particulate material 18 from outlet 16.3 of hopper 16.1 whilst the support surface 12 is moving in the direction of arrow A.
  • control means activates the energy beam 22, and the rotating wheel 24, and the laser beam 22 is directed onto the rotating wheel 24.
  • the rotating wheel 24 continuously varies the angle of deflection of the laser beam 22 by the deflecting surfaces 24.1.
  • the rotating wheel 24 then continuously deflects and moves the laser beam 22 along the dispensed particulate material 18, in accordance with the particular design of the artefact, to heat fuse the particles 18 in a first layer 18.1 to one another.
  • the size and dimension of wheel 24 ensures that the rotation of the wheel 24 causes the deflecting surfaces 24.1 to deflect and move the laser beam 22 from one side of the support surface 12 to the other side, across the support 12 and instantaneously thereafter, bring the laser beam 22 back to its starting point. This occurs while the support surface 12 is in moving in the direction of A.
  • This movement of the support surface 12 in conjunction with the movement of the deflected laser beam 22 creates a multitude of obliquely fused paths that are not entirely perpendicular to the direction A - B, but that are parallel to one another.
  • the slower the movement of the support surface 12 in a direction the less oblique the fused paths will be.
  • the obliqueness of the fused paths is not a problem and could be compensated for electronically, if necessary.
  • the deflected laser beam 22 adequately elevates the temperature of the dispensed particulate material 18 on the predetermined fusion path, above the fusing temperature thereof, so as to optimally fuse the dispensed particles 18, and therefore obtain maximum material strength of the artefact.
  • the control means moves the support surface 12 in a third direction indicated by arrow C in increments, away from the outlet openings 16.3 and 16.4, the increments being equal to the thickness of the layers to be sequentially deposited on top of the first layer 18.1.
  • the arrangement is such that, in use, after deposition and fusion of the first layer 18.1 , the support surface 12 is moved one increment in the third direction, and subsequently in the second direction B.
  • a second layer is deposited on top of the first layer 18.1 and the particles 18 in the second layer are heat fused to one another, and to the first layer 18.1 to form an integral and coherent unitary body therewith.
  • the apparatus 0 could be located in a pre-heating chamber for elevating the temperature of the particulate material towards its fusing temperature, but adequately below the fusion temperature of the particulate material, such that after fusion of the particles, heat energy would dissipate from the material into the said environment sufficiently for the fused material to acquire dimensional stability. Temperature may also be elevated locally by means of a second laser.
  • a major advantage of the apparatus 10 and method according to the present invention is that the artefact production time, in comparison with that of prior art methods and apparatus, is shortened substantially owing to rapid laser manipulation, and thus accelerated movement, of laser beam 22 across the support surface 12. Further, the electronic control of the switch on and off and deflection of the laser beam 22 is relatively much faster than the mechanical control of prior art apparatus. It is foreseen that the apparatus for layer manufacturing of a three dimensional artefact according to the present invention effectively overcomes the size constraints through variable length, made possible by linear scanning in one plane with the other plane being controlled by the relative motion of the bed. Furthermore, the size of the artefact being manufactured is unlimited since the size of the support surface 12 can be made as big or small as is practically possible.
  • the apparatus could also include similar additional modular dispensing units and additional modular laser units that could be added, depending on the width of the artefact to be formed. It is foreseen that any of the heat fusible particulate material previously used with prior art apparatus could be used with the apparatus 10.
  • the deflector may have various numbers of sides.
  • the control means may move the arm 26 and outlets 16.3 and 16.4, gradually away from the surface 12, after each layer of fusion.

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

Abstract

La présente invention concerne un procédé et un appareil (10) de fabrication en couches d'artéfacts en trois dimensions. L'appareil (10) comprend une surface de support (12) destinée à supporter un artéfact (14) devant être formé; et un moyen de distribution (16) se présentant sous la forme de première et seconde trémies (16.1 et 16.2) allongées et espacées, respectivement, et permettant de stocker et de distribuer un matériau particulaire thermofusible (18), et de déposer une couche dudit matériau (18) sur la surface (12). L'appareil (10) comprend également une source (20) de faisceau d'énergie se présentant sous la forme d'un laser et une unité de lentille située entre les trémies (16.1 et 16.2) pour émettre un faisceau laser (22). L'appareil (10) comprend en outre un élément déflecteur mobile se présentant sous la forme d'une roue rotative (24) permettant de dévier le faisceau laser (22) et de le déplacer le long du matériau particulaire réparti (18) de façon à fusionner le matériau particulaire (18) le long d'une trajectoire de fusion prédéterminée.
PCT/IB2010/055393 2009-11-24 2010-11-24 Procédé et appareil de fabrication en couches d'artéfacts Ceased WO2011064725A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
ZA2009/05860 2009-11-24
ZA200905863 2009-11-24
ZA200905861 2009-11-24
ZA200905860 2009-11-24
ZA2009/05863 2009-11-24
ZA200905859 2009-11-24
ZA2009/05859 2009-11-24
ZA2009/05861 2009-11-24

Publications (1)

Publication Number Publication Date
WO2011064725A1 true WO2011064725A1 (fr) 2011-06-03

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ID=43661988

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PCT/IB2010/055393 Ceased WO2011064725A1 (fr) 2009-11-24 2010-11-24 Procédé et appareil de fabrication en couches d'artéfacts

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WO (1) WO2011064725A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103917348A (zh) * 2011-06-28 2014-07-09 环球过滤系统商业用名海湾过滤系统股份有限公司 使用线性固化来成型三维物体的装置和方法
WO2014199149A1 (fr) * 2013-06-11 2014-12-18 Renishaw Plc Appareil et procédé de fabrication additive
US20160151840A1 (en) * 2014-12-02 2016-06-02 The Exone Company Recoaters for Powder-Layer Three-Dimensional Printers
CN105705292A (zh) * 2013-11-05 2016-06-22 西门子能源公司 使用粉末金属和粉末助焊剂的流化床的增材制造
WO2016182790A1 (fr) * 2015-05-11 2016-11-17 Wisconsin Alumni Research Foundation Imprimante en trois dimensions avec cathode-peigne à balayage mécanique
EP2981402A4 (fr) * 2013-04-04 2016-12-07 Global Filtration Systems Dba Gulf Filtration Systems Inc Appareil et procédé permettant de former des objets en trois dimensions à l'aide d'une solidification linéaire avec une correction d'axe de déplacement et une commande de puissance
ITUB20159240A1 (it) * 2015-12-22 2017-06-22 3D New Tech S R L Apparecchiatura per additive manufacturing e procedimento di additive manufcturing
US9902112B2 (en) 2015-04-07 2018-02-27 Global Filtration Systems Apparatus and method for forming three-dimensional objects using linear solidification and a vacuum blade
US10000023B2 (en) 2011-06-28 2018-06-19 Global Filtration Systems Apparatus and method for forming three-dimensional objects using linear solidification
JP2019001171A (ja) * 2011-08-05 2019-01-10 ラフバラ・ユニバーシティＬｏｕｇｈｂｏｒｏｕｇｈ Ｕｎｉｖｅｒｓｉｔｙ 選択的に粒子状物質を結合するための方法及び機器
US10335901B2 (en) 2013-06-10 2019-07-02 Renishaw Plc Selective laser solidification apparatus and method

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US5437820A (en) * 1992-02-12 1995-08-01 Brotz; Gregory R. Process for manufacturing a three-dimensional shaped product
EP1514622A1 (fr) * 2003-09-15 2005-03-16 Trumpf Werkzeugmaschinen GmbH + Co. KG Appareil et procédé pour la fabrication d'un article tridimensionnel
US20060192322A1 (en) * 2003-02-25 2006-08-31 Satoshi Abe Three dimensional structure producing device and producing method
DE102007057129A1 (de) * 2007-11-24 2009-06-04 Hochschule Mittweida (Fh) Verfahren und Einrichtung zur Hochleistungs-Mikrobearbeitung eines Körpers oder einer Pulverschicht mit einem Laser hoher Brillanz

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US5437820A (en) * 1992-02-12 1995-08-01 Brotz; Gregory R. Process for manufacturing a three-dimensional shaped product
DE4400523A1 (de) * 1994-01-11 1995-07-13 Eos Electro Optical Syst Verfahren und Vorrichtung zum Herstellen eines dreidimensionalen Objekts
US20060192322A1 (en) * 2003-02-25 2006-08-31 Satoshi Abe Three dimensional structure producing device and producing method
EP1514622A1 (fr) * 2003-09-15 2005-03-16 Trumpf Werkzeugmaschinen GmbH + Co. KG Appareil et procédé pour la fabrication d'un article tridimensionnel
DE102007057129A1 (de) * 2007-11-24 2009-06-04 Hochschule Mittweida (Fh) Verfahren und Einrichtung zur Hochleistungs-Mikrobearbeitung eines Körpers oder einer Pulverschicht mit einem Laser hoher Brillanz

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10000023B2 (en) 2011-06-28 2018-06-19 Global Filtration Systems Apparatus and method for forming three-dimensional objects using linear solidification
US9981425B2 (en) 2011-06-28 2018-05-29 Global Filtration Systems Apparatus and method for forming three-dimensional objects using linear solidification
EP2726264A4 (fr) * 2011-06-28 2015-02-25 Global Filtration Systems Dba Gulf Filtration Systems Inc Appareil et procédé pour former des objets tridimensionnels en utilisant une solidification linéaire
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CN103917348A (zh) * 2011-06-28 2014-07-09 环球过滤系统商业用名海湾过滤系统股份有限公司 使用线性固化来成型三维物体的装置和方法
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