WO2001072501A1 - Method and device for producing components from light-curable materials - Google Patents

Method and device for producing components from light-curable materials Download PDF

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Publication number
WO2001072501A1
WO2001072501A1 PCT/DE2001/001185 DE0101185W WO0172501A1 WO 2001072501 A1 WO2001072501 A1 WO 2001072501A1 DE 0101185 W DE0101185 W DE 0101185W WO 0172501 A1 WO0172501 A1 WO 0172501A1
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WIPO (PCT)
Prior art keywords
component
light
platform
mask
component platform
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PCT/DE2001/001185
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German (de)
French (fr)
Inventor
Holger Fricke
Holger LÖFFLER
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Fraunhofer Gesellschaft Zur Förderung Der Angewandten Forschung E. V.
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Publication of WO2001072501A1 publication Critical patent/WO2001072501A1/en

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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
    • B29C64/106—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
    • 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

  • the invention relates to a method and a device for producing components and component prototypes from light-cured materials, according to the preamble of claims 1 and 8
  • rapid prototyping Such methods are known, inter alia, under the term rapid prototyping. This term encompasses a large number of different methods in which components and component prototypes are produced quickly. These methods allow a three-dimensional component or component prototypes to be built up directly.
  • rapid prototyping method methods are known in which the Component contours or the component structures are produced by light curing a liquid plastic.A liquid photopolymer resin is cured with a focused laser beam.To do this, a component platform is wetted with the liquid photopolymer resin and a UV laser beam is directed at it. The resin is cured in the areas that the result in later component The surrounding unexposed resin remains unaffected by this and does not cure.
  • component a b lowered and a further layer height of the resin is applied and the hardening process proceeds identically for this new layer.
  • the component constructed in this way is fully hardened in a UV oven.
  • Another variant of the process described above is that the individual plastic layers are not hardened with one focused laser beam, but with the aid of diffuse light, which exposes the plastic layers to be hardened through a mask.
  • the mask corresponds to the shape of the desired contour of the component to be built up.
  • the process is relatively complicated, since after each exposure of the layer to be produced, the layer has to be hardened and polymerized must be treated accordingly, since the remaining areas are still filled with liquid monomer, so that the entire process of such a component production is relatively complex.
  • the build-up rates of the described methods are relatively low
  • the object of the present invention is to further develop the generic method and device for carrying out this method in such a way that the effort for producing a component or component prototype is minimal
  • the essential feature of the method according to the invention is that the construction process of the component prototype takes place continuously.A component platform is moved continuously, the light-hardenable material not being applied to the component platform to build up the component in layers and cured, but rather the component platform is liquid or in it material that is flowable in powder form is only exposed in the areas that correspond to the current cut through the component to be assembled.
  • the selective exposure of the component platform or the component to be assembled can be achieved by appropriately assigning a device, which can advantageously be designed in the form of a mask Realization of the component platform It is guaranteed that by changing the mask, ie by controlling the mask in such a way that the distance between the component platform and the light source, the structure of the component is exactly reproduced by light curing
  • FIGS. 1 and 2 The invention is illustrated using an exemplary embodiment and is explained in more detail in FIGS. 1 and 2
  • the apparatus for the continuous production of components and component prototypes shown schematically in FIG. 1 has a container 1 filled with a liquid or photo-hardenable plastic in powder form, a component platform 2 and a light source 3 between the light source 3 and the component platform 2 located in the container 1 there is a mask 4.
  • the component platform 2 is illuminated by a diffuse light coming from the light source 3.
  • the bottom 5 of the container 1 is translucent.
  • the light arriving through the base 5 on the component platform 2 starts the polymerization of the plastic in the bath 1 6
  • the plastic 6 is initially deposited on the component platform 2 or in later construction progress on the structure of the component just formed 7. Due to the continuous movement of the component platform 2 upwards, fresh monomer flows continuously from the side of the component platform 2, which, as soon as it is exposed to crosslinking.
  • the light arriving from the light source 3 only reaches the areas of the building platform 2 which make up the later component 7. This is done in the illustration according to FIG. 1 using a mask technique using the mask 4 shown.
  • Another possibility for controlling the light flow is digital processing technology (DLP )
  • DLP digital processing technology
  • Another embodiment is the design of the container bottom 5 as a mask
  • FIG. 2 shows a component 8 and an associated mask 4.
  • the component 8 to be produced is uniformly irradiated with UV light through the container base 5 from the z direction. Irradiation is continuous.
  • the mask 4 is arranged on the container bottom 5 or between the light source and the bath 1.
  • the mask 4 can be controlled in the x, y plane; through them the UV light shines before it can reach material 6.
  • the mask 4 can be in the local area, i.e. Realize at least two states with certain values of x, y. In state A, the mask absorbs / reflects the UV light more than in state B. It is an advantage if the mask can also realize intermediate states of A + B.
  • Grayscale C ranges you can eg thereby realize by switching between states A and B in a rapid chronological order.
  • a mask 4 can be controlled with the aid of a computer program.
  • the program realizes the geometry of the component 8 to be manufactured and calculates a section 9 of the component 8 in the x, y plane for a given value in the z direction. This value depends on the construction time and depends on the distance between the component platform 2 and the bathroom floor 5, which increases with the construction time.
  • the mask 4 is controlled as follows. If a local area of the section 9 contains material, then in state B is realized in the corresponding local area of mask 4. If a local area of cut 9 contains no material, state A is realized in the corresponding local area of mask 4. If a local area of cut 9 is only partially hardened, the corresponding area is cured An intermediate state C is realized in the local area of the mask 4
  • the method according to the invention which is carried out by the device shown in FIG. 1, permits high process speeds which are several hundred times faster than the known process speeds the component platform moves in the range of 1 mm / sec, and the speed in the area of the mask change at 1 00 / sec. This can be achieved in that the material can be exposed continuously and the layers can be built up continuously by the continuous movement of the component platform
  • the continuous construction of the component creates a surface that has no perceptible transitions.
  • the surface of the component manufactured in this way is smooth.
  • the mask technology is decisive for the surface quality of a component manufactured in this way. If an LC display is used as a mask, it is possible to implement well over 100 masks per second, which means that the surface appears almost absolutely smooth

Abstract

The invention relates to a method for producing components and component prototypes from light-curable materials. According to said method, the material is cured using light and the component is constructed on a component platform as the material is exposed to light. The material (6) is continuously supplied to the component platform (2) and hence, the component to be constructed (7). The exposure of the material (6) to light and the curing thereof takes place continuously, the component platform (2) being continuously transported in a material container (1) and suitable devices ensuring that the areas of the component (7) or the component platform (2) that produce the future structure of the component are exposed to the light continuously.

Description

Verfahren und Vorrichtung zur Herstellung von Bauteilen aus lichtaushartbaren Werkstoffen Method and device for the production of components from light-cured materials
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Herstellung von Bauteilen und Bauteilprototypen aus lichtaushartbaren Werkstoffen, gemäß dem Oberbegriff der Ansprüche 1 und 8The invention relates to a method and a device for producing components and component prototypes from light-cured materials, according to the preamble of claims 1 and 8
Derartige Verfahren sind u a unter dem Begriff Rapid Prototyping bekannt Dieser Begriff umfaßt eine Vielzahl unterschiedlicher Verfahren, bei denen Bauteile und Bauteilprototypen schnell hergestellt werden Diese Verfahren erlauben einen direkten Aufbau eines dreidimensionalen Bauteiles oder Bauteilprototypen Bei dem Rapid Prototyping-Verfahren sind Verfahren bekannt, bei denen die Bauteilkonturen bzw die Bauteilstrukturen hergestellt werden, indem Licht einen flussigen Kunststoff aushärtet Dabei wird ein flussiges Photopolymerharz mit einem fokussiertem Laserstrahl ausgehartet Dazu wird eine Bauteilplattform mit dem flussigen Photopolymerharz benetzt und darauf ein UV- Laserstrahl gerichtet Das Harz wird dadurch in den Bereichen ausgehartet, die das spätere Bauteil ergeben Das umgebende nichtbelichtete Harz bleibt hiervon unberührt und härtet nicht aus Nach der vollständigen Belichtung des hier interessierenden Bereiches und somit nach der Aushärtung des Harzes wird die Bauteil abgesenkt und eine weitere Schichthohe des Harzes wird aufgetragen und der Aushartervorgang verlauft identisch für diese neue Schicht Abschließend erfolgt ein vollständiges Ausharten des so aufgebauten Bauteiles in einem UV-Ofen Eine andere Variante des oben beschriebenen Verfahrens ist, dass die Aushärtung der einzelnen Kunststoffschichtchen nicht mit einem fokussiertem Laserstrahl erfolgt, sondern mit Hilfe von diffusem Licht, das durch eine Maske hindurch die auszuhärtenden Kunststoffschichten belichtet Die Maske entspricht der Form der erwünschten Kontur des aufzubauenden Bauteiles Das Verfahren ist relativ kompliziert, da nach jedem Belichten der zu erzeugenden Schicht diese nach Aushärtung und Auspolymeπsierung entsprechend behandelt werden muß, da die übrigen Bereiche noch durch flussiges Monomer ausgefüllt sind, sodass der gesamte Prozess einer derartigen Bauteilherstellung relativ aufwendig ist Insofern sind die Aufbauraten der beschriebenen Verfahren relativ gering Aufgabe der vorliegenden Erfindung ist es, das gattungsgemaße Verfahren und Vorrichtung zur Durchfuhrung dieses Verfahrens so weiterzubilden, dass der Aufwand zur Herstellung eines Bauteils oder Bauteilprototypen minimal istSuch methods are known, inter alia, under the term rapid prototyping. This term encompasses a large number of different methods in which components and component prototypes are produced quickly. These methods allow a three-dimensional component or component prototypes to be built up directly. In the rapid prototyping method, methods are known in which the Component contours or the component structures are produced by light curing a liquid plastic.A liquid photopolymer resin is cured with a focused laser beam.To do this, a component platform is wetted with the liquid photopolymer resin and a UV laser beam is directed at it.The resin is cured in the areas that the result in later component The surrounding unexposed resin remains unaffected by this and does not cure. After the area of interest has been fully exposed and thus after the resin has cured, component a b lowered and a further layer height of the resin is applied and the hardening process proceeds identically for this new layer. Finally, the component constructed in this way is fully hardened in a UV oven. Another variant of the process described above is that the individual plastic layers are not hardened with one focused laser beam, but with the aid of diffuse light, which exposes the plastic layers to be hardened through a mask. The mask corresponds to the shape of the desired contour of the component to be built up. The process is relatively complicated, since after each exposure of the layer to be produced, the layer has to be hardened and polymerized must be treated accordingly, since the remaining areas are still filled with liquid monomer, so that the entire process of such a component production is relatively complex. In this respect, the build-up rates of the described methods are relatively low The object of the present invention is to further develop the generic method and device for carrying out this method in such a way that the effort for producing a component or component prototype is minimal
Diese Aufgabe wird durch die in den Ansprüchen 1 und 8 angegebene Erfindung gelostThis object is achieved by the invention specified in claims 1 and 8
Das wesentliche Merkmal des erfindungsgemaßen Verfahrens ist, dass der Aufbauprozeß des Bauteilprototypen kontinuierlich erfolgt Dabei wird eine Bauteilplattform kontinuierlich bewegt, wobei der lichtaushartbare Werkstoff nicht auf die Bauteilplattform zum Aufbau des Bauteiles schichtweise aufgetragen und ausgehartet wird, sondern die Bauteilplattform ist durch diesen in flussiger oder in fließfahiger Pulverform befindlichen Werkstoff umgeben Sie wird lediglich in den Bereichen belichtet, die dem momentanem Schnitt durch das aufzubauende Bauteil entsprechen Die selektive Belichtung der Bauteilplattform bzw des aufzubauenden Bauteiles ist durch eine entsprechende Zuordnung einer Vorrichtung, die vorteilhafterweise in Form einer Maske ausgebildet werden kann, zu der Bauteilplattform realisiert Es ist gewahrleistet, dass durch die nderung der Maske, d h durch die Steuerung der Maske derart, dass der aufgrund des sich kontinuierlich ändernden Abstandes zwischen der Bauteilplattform und der Lichtquelle die Struktur des Bauteiles durch Lichthartung genau nachgebildet wirdThe essential feature of the method according to the invention is that the construction process of the component prototype takes place continuously.A component platform is moved continuously, the light-hardenable material not being applied to the component platform to build up the component in layers and cured, but rather the component platform is liquid or in it material that is flowable in powder form is only exposed in the areas that correspond to the current cut through the component to be assembled. The selective exposure of the component platform or the component to be assembled can be achieved by appropriately assigning a device, which can advantageously be designed in the form of a mask Realization of the component platform It is guaranteed that by changing the mask, ie by controlling the mask in such a way that the distance between the component platform and the light source, the structure of the component is exactly reproduced by light curing
Die Erfindung wird anhand eines Ausfuhrungsbeispieles dargestellt und in dem Figuren 1 und 2 naher erläutert Es zeigenThe invention is illustrated using an exemplary embodiment and is explained in more detail in FIGS. 1 and 2
- Fig 1 eine Vorrichtung zur kontinuierlichen Herstellung von Bauteilen und Bauteilprototypen1 shows a device for the continuous production of components and component prototypes
- Fig 2 ein Beispiel einer Maskenberechnung2 shows an example of a mask calculation
Die in Fig 1 schematisch dargestellte Vorrichtung zur kontinuierlichen Herstellung von Bauteilen und Bauteilprototypen weist ein mit einem flussigen oder in Pulverτorm vorliegenden photoaushartbarem Kunststoff gefülltes Behalter 1 ein eine Bauteilplattform 2 und eine Lichtquelle 3 auf Zwischen der Lichtquelle 3 und der sich im Behalter 1 befindlichen Bauteilplattform 2 befindet sich eine Maske 4 Die Bauteilplattform 2 wird durch ein diffuses Licht, das aus der Lichtquelle 3 kommt, belichtet Der Boden 5 des Behalters 1 ist lichtdurchlässig Das durch den Boden 5 an der Bauteilplattform 2 ankommende Licht startet die Polymerisation des im Bad 1 befindlichen Kunststoffes 6 Der Kunststoff 6 lagert sich zunächst an der Bauteilplattform 2 ab bzw im spateren Baufortschritt an der gerade zuvor gebildeten Struktur des Bauteiles 7 Durch die kontinuierliche Bewegung der Bauteilplattform 2 nach oben fließt von der Seite der Bauteilplattform 2 standig frisches Monomer nach, das, sobald es belichtet wird, anfangt zu vernetzen Es bildet sich dadurch mit steigendem Vernetzungsgrad ein Gradient vom Behalterboden 5 nach oben bis zu αem Ort, an dem die Vernetzungsreaktion stoppt Die Vernetzungsreaktion wird so gesteuert, dass eine Verfestigung erst in einem gewissen Abstand vom Behälterboden 5 eintritt, damit eine Anhaftung des Bauteils 7 am Behälterboden 5 ausbleibt. Dies kann dadurch erreicht werden, dass der Behälterboden 5 gekühlt wird, wodurch der Kunststoff 6 dort eine geringere Reaktivität aufweist.The apparatus for the continuous production of components and component prototypes shown schematically in FIG. 1 has a container 1 filled with a liquid or photo-hardenable plastic in powder form, a component platform 2 and a light source 3 between the light source 3 and the component platform 2 located in the container 1 there is a mask 4. The component platform 2 is illuminated by a diffuse light coming from the light source 3. The bottom 5 of the container 1 is translucent. The light arriving through the base 5 on the component platform 2 starts the polymerization of the plastic in the bath 1 6 The plastic 6 is initially deposited on the component platform 2 or in later construction progress on the structure of the component just formed 7. Due to the continuous movement of the component platform 2 upwards, fresh monomer flows continuously from the side of the component platform 2, which, as soon as it is exposed to crosslinking. As a result, as the degree of crosslinking increases, a gradient forms from the container bottom 5 up to the point at which the crosslinking reaction stops. The crosslinking reaction is controlled in such a way that solidification only occurs at a certain distance from the container bottom 5, so that there is no adhesion of the component 7 to the container base 5. This can be achieved in that the container bottom 5 is cooled, as a result of which the plastic 6 has a lower reactivity there.
Das von der Lichtquelle 3 ankommende Licht erreicht nur die Bereiche der Bauplattform 2, die das spatere Bauteil 7 ergeben Dies geschieht in der Darstellung nach Fig 1 über eine Maskentechnik mittels der dargestellten Maske 4 Eine andere Möglichkeit der Steuerung des Lichtflußes ist Digital Processing Technologie (DLP) Eine weitere Ausführungsform ist, die Ausbildung des Behälterbodens 5 als MaskeThe light arriving from the light source 3 only reaches the areas of the building platform 2 which make up the later component 7. This is done in the illustration according to FIG. 1 using a mask technique using the mask 4 shown. Another possibility for controlling the light flow is digital processing technology (DLP ) Another embodiment is the design of the container bottom 5 as a mask
In Fig 2 ist ein Bauteil 8 und eine zugehörige Maske 4 dargestellt Das herzustellende Bauteil 8 wird durch den Behälterboden 5 aus der z-Richtung gleichmäßig mit UV-Licht bestrahlt. Die Bestrahlung erfolgt kontinuierlich. Am Behälterboden 5 oder zwischen der Lichtquelle und dem Bad 1 ist die Maske 4 angeordnet. Die Maske 4 ist steuerbar in der x, y-Ebene; durch sie strahlt das UV-Licht, bevor sie den Werkstoff 6 erreichen kann. Die Maske 4 kann im lokalen Bereich, d.h. mit bestimmten Werten von x, y mindestens zwei Zustände realisieren Im Zustand A absorbiert/reflektiert die Maske das UV-Licht stärker als im Zustand B Es ist ein Vorteil, wenn die Maske auch Zwischenzustande von A + B realisieren kann Diese Zwischenzustände werden im Weiteren als Graustufen C bereichnet Sie lassen sich z.B. dadurch realisieren, indem in rascher zeitlicher Abfolge zwischen den Zuständen A und B gewechselt wird. Eine solche Maske 4 kann mit Hilfe eines Computerprogramms gesteuert werden Dabei realisiert das Programm die Geometrie des zu fertigenden Bauteiles 8 und berechnet einen Schnitt 9 des Bauteiles 8 in der x, y-Ebene zu einem gegebenen Wert in z-Richtung. Dieser Wert ist von der Bauzeit abhängig und richtet sich nach dem mit der Bauzeit wachsendem Abstand der Bauteilplattform 2 zum Badboden 5. Entsprechend der Information dieses Schnittes 9 wird die Maske 4 wie folgt gesteuert Sollte ein lokaler Bereich des Schnittes 9 Material enthalten, so wird in dem entsprechenden lokalen Bereich der Maske 4 der Zustand B realisiert Sollte ein lokaler Bereich des Schnittes 9 kein Material enthalten wird in dem entsprechenden lokalen Bereich der Maske 4 der Zustand A realisiert Sollte ein lokaler Bereich des Schnittes 9 nur teilweise ausgehärtet werden, wird in dem entsprechenden lokalen Bereich der Maske 4 ein Zwischenzustand C realisiertFIG. 2 shows a component 8 and an associated mask 4. The component 8 to be produced is uniformly irradiated with UV light through the container base 5 from the z direction. Irradiation is continuous. The mask 4 is arranged on the container bottom 5 or between the light source and the bath 1. The mask 4 can be controlled in the x, y plane; through them the UV light shines before it can reach material 6. The mask 4 can be in the local area, i.e. Realize at least two states with certain values of x, y. In state A, the mask absorbs / reflects the UV light more than in state B. It is an advantage if the mask can also realize intermediate states of A + B. These intermediate states are referred to below as Grayscale C ranges you can eg thereby realize by switching between states A and B in a rapid chronological order. Such a mask 4 can be controlled with the aid of a computer program. The program realizes the geometry of the component 8 to be manufactured and calculates a section 9 of the component 8 in the x, y plane for a given value in the z direction. This value depends on the construction time and depends on the distance between the component platform 2 and the bathroom floor 5, which increases with the construction time. According to the information in this section 9, the mask 4 is controlled as follows. If a local area of the section 9 contains material, then in state B is realized in the corresponding local area of mask 4. If a local area of cut 9 contains no material, state A is realized in the corresponding local area of mask 4. If a local area of cut 9 is only partially hardened, the corresponding area is cured An intermediate state C is realized in the local area of the mask 4
Das erfindungsgemäße Verfahren, die durch die in Fig. 1 dargestellte Vorrichtung durchgeführt wird, erlaubt hohe Prozessgeschwindigkeiten, die mehrere hundert Mal schneller sind als die bekannten Prozeßgeschwindigkeiten Die Verfahrgeschwindigkeit der Bauteilplattform bewegt sich im Bereich 1 mm/sec , und die Geschwindigkeit im Bereich der Maskenanderung bei 1 00/sec Dies ist dadurch erreichbar, dass das Material kontinuierlich belichtet werden kann und die Schichten durch die kontinuierliche Bewegung der Bauteilplattform kontinuierlich aufgebaut werden könnenThe method according to the invention, which is carried out by the device shown in FIG. 1, permits high process speeds which are several hundred times faster than the known process speeds the component platform moves in the range of 1 mm / sec, and the speed in the area of the mask change at 1 00 / sec. This can be achieved in that the material can be exposed continuously and the layers can be built up continuously by the continuous movement of the component platform
Durch den kontinuierlichen Aufbau des Bauteiles entsteht eine Oberflache die keine wahrnehmbaren Übergänge aufweist. Die Oberfläche des so hergestellten Bauteiles ist glatt Für die Oberflachengute eines so hergestellten Bauteiles ist die Maskentechnologie maßgebend Wird als Maske ein LC-Display eingesetzt, so ist es möglich, weit über 100 Masken pro sec zu realisieren, d h dass die Oberflache beinahe absolut glatt erscheint The continuous construction of the component creates a surface that has no perceptible transitions. The surface of the component manufactured in this way is smooth. The mask technology is decisive for the surface quality of a component manufactured in this way. If an LC display is used as a mask, it is possible to implement well over 100 masks per second, which means that the surface appears almost absolutely smooth

Claims

Patentansprücheclaims
Verfahren zur Herstellung von Bauteilen und Bauteilprototypen aus lichtaushartbaren Werkstoffen, bei dem der Werkstoff durch Licht ausgehartet wird und wobei die ausgehartete Struktur der spateren Bauteilstruktur entspricht und wobei das Bauteil auf einer Bauteilplattform durch Belichtung des Werkstoffs mit Licht aufgebaut wird, dadurch gekennzeichnet, dass der Werkstoff (6) der Bauteilplattform (2) und damit dem aufzubauenden Bauteil (7) kontinuierlich zugeführt wird, und dass die Belichtung und Aushärtung des Werkstoffes (6) kontinuierlich erfolgt, wobei die Bauteilplattform (2) in einem Werkstoffbehalter (1 ) kontinuierlich verfahrt und durch geeignete Vorrichtungen gewährleistet ist, dass die Bereiche des Bauteiles (7) bzw der Bauteilplattform (2), die die spatere Bauteilstruktur ergeben, kontinuierlich belichtet werdenProcess for the production of components and component prototypes from light-cured materials, in which the material is cured by light and where the cured structure corresponds to the later component structure and the component is built on a component platform by exposure of the material to light, characterized in that the material (6) the component platform (2) and thus the component (7) to be assembled is fed continuously, and that the exposure and curing of the material (6) takes place continuously, the component platform (2) moving and passing through in a material container (1) Suitable devices ensure that the areas of the component (7) or the component platform (2) that result in the later component structure are continuously exposed
Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Bauteilplattform (2) kontinuierlich in einem mit lichtaushartbarem Werkstoff (6) gefülltem Behalter (1 ) verfahrt und dass zwischen der Bauteilplattform (2) und einer Lichtquelle (3) eine Maske (4) angeordnet ist, die die Belichtung der auszuhärtenden Bereiche des auf der Bauteilplattform (2) aufzubauenden Bauteiles (7) durch die kontinuierliche Veränderung der Maske (4) und Anpassung an die Bauteilplattformbewegung erreicht wirdMethod according to claim 1, characterized in that the component platform (2) moves continuously in a container (1) filled with light-hardenable material (6) and that a mask (4) is arranged between the component platform (2) and a light source (3) , the exposure of the areas to be hardened of the component (7) to be built up on the component platform (2) is achieved by continuously changing the mask (4) and adapting to the component platform movement
Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet dass der verwendete Werkstoff ein lichtaushartbares Photopolymer ist Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der lichtaushärtbare Werkstoff (6) fließfahig istA method according to claim 1 or 2, characterized in that the material used is a light-curable photopolymer Method according to one of claims 1 to 3, characterized in that the light-curable material (6) is flowable
Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der Werkstoff (6) in flüssiger Form vorliegt.A method according to claim 4, characterized in that the material (6) is in liquid form.
Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der Werkstoff (6) pulverförmig ist.A method according to claim 4, characterized in that the material (6) is in powder form.
Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der Werkstoff (6) ein Pulver aus Metall, Nichtmetall, Keramik, Cermet oder Kunststoff bzw Mischungen davon istA method according to claim 6, characterized in that the material (6) is a powder made of metal, non-metal, ceramic, cermet or plastic or mixtures thereof
Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Bauteilplattform (2) in einem Werkstoffbehalter (1 ) angeordnet und kontinuierlich in diesem bewegbar ist, und dass eine Lichtquelle (3), die die Bauteilplattform (2) belichtet, vorhanden ist, und dass zwischen der Lichtquelle (3) und der Bauteilplattform (2) eine entsprechend der Bewegung der Bauteilplattform (2) und der Struktur des herzustellenden Bauteiles (7) gesteuerte Maske (4) angeordnet ist, wobei die Steuerung der Maske (4) gewährleistet, dass lediglich die Teile der Bauteilplattform (2) und des darauf aufbauenden Bauteiles (7) belichtet werden, die der Struktur des fertigen Bauteiles (7) entsprechen.Device for carrying out the method according to one of claims 1 to 7, characterized in that the component platform (2) is arranged in a material container (1) and is continuously movable therein, and that a light source (3) which the component platform (2) exposed, is present, and that between the light source (3) and the component platform (2) is arranged a mask (4) controlled according to the movement of the component platform (2) and the structure of the component to be manufactured (7), the control of the mask (4) ensures that only the parts of the component platform (2) and the component (7) based thereon are exposed which correspond to the structure of the finished component (7).
Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Maske (4) durch ein LC-Display gebildet ist.Apparatus according to claim 8, characterized in that the mask (4) is formed by an LC display.
Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Maske (4) und/oder die Bewegung der Bauteilplattform (2) durch einen Computer gesteuert wird.Apparatus according to claim 8 or 9, characterized in that the mask (4) and / or the movement of the component platform (2) is controlled by a computer.
Vorrichtung nach einem der Ansprüche 8 bis 1 0, dadurch gekennzeichnet, dass der Boden (5) des Werkstoffbehälters (1 ) lichtdurchlässig ist Vorrichtung nach Anspruch 1 1 , dadurch gekennzeichnet, dass der Werkstoffbehalter (1 ) von unten belichtet wird und dass die Bauteilplattform (2) kontinuierlich nach oben verfahrt Device according to one of claims 8 to 1 0, characterized in that the bottom (5) of the material container (1) is translucent Device according to claim 1 1, characterized in that the material container (1) is exposed from below and that the component platform (2) moves continuously upwards
PCT/DE2001/001185 2000-03-28 2001-03-28 Method and device for producing components from light-curable materials WO2001072501A1 (en)

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