HK194796A - Method and apparatus for producing parts by selective sintering - Google Patents
Method and apparatus for producing parts by selective sintering Download PDFInfo
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- HK194796A HK194796A HK194796A HK194796A HK194796A HK 194796 A HK194796 A HK 194796A HK 194796 A HK194796 A HK 194796A HK 194796 A HK194796 A HK 194796A HK 194796 A HK194796 A HK 194796A
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- Hong Kong
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- powder
- layer
- target surface
- aim
- laser
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
- G05B19/41—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by interpolation, e.g. the computation of intermediate points between programmed end points to define the path to be followed and the rate of travel along that path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/008—Accessories or implements for use in connection with applying particulate materials to surfaces; not provided elsewhere in B05C19/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/10—Auxiliary heating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/60—Planarisation devices; Compression devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/004—Filling molds with powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
- B23K26/0624—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses using ultrashort pulses, i.e. pulses of 1 ns or less
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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- B23K26/34—Laser welding for purposes other than joining
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- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/12—Spreading-out the material on a substrate, e.g. on the surface of a liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
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- 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
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- B33Y—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
- B33Y10/00—Processes of additive manufacturing
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- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
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- G—PHYSICS
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/57—Metering means
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- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1052—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding assisted by energy absorption enhanced by the coating or powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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Claims (18)
1. Verfahren zur Herstellung eines Teiles (52), das die folgenden Verfahrensschritte aufweist: Aufbringen einer ersten Schicht eines sinterfähigen Pulvers (22) auf eine Aufnahmefläche (26);
Abtasten des Zieles eines gerichteten Energiestrahles (64) über der Aufnahmefläche, um die ausgewählten Abschnitte der ersten Schicht (54) des Pulvers entsprechend einem ersten Querschnittsbereich des Teiles (52) zu schmelzen, indem der Strahl (64) eingesetzt wird, wenn das Ziel des Strahles (64) innerhalb der Grenzen zu finden ist, die durch den ersten Querschnittsbereich abgegrenzt werden;
Aufbringen einer zweiten Schicht des sinterfähigen Pulvers (22) auf die erste Schicht (54);
Abtasten des Zieles eines gerichteten Energiestrahles (64) über der Aufnahmefläche (26), um die ausgewählten Abschnitte der zweiten Schicht (55) entsprechend einem zweiten Querschnittsbereich des Teiles (52) zu sintern, indem der Strahl (64) eingesetzt wird, wenn das Ziel des Strahles innerhalb der Grenzen zu finden ist, die durch den Querschnittsbereich abgegrenzt werden, so daß die gesinterten Abschnitte der ersten und der zweiten Schicht (54, 55) während des Sinterns der zweiten Schicht (55) verbunden werden; und
Aufbringen weiterer nachfolgender Schichten des sinterfähigen Pulvers (22) auf die vorangegangenen Schichten und Sintern einer Schicht eines jeden nachfolgenden Abschnittes, um ein Teil (52) herzustellen, das eine Vielzahl von gesinterten Schichten (54, 55, 56, 57) aufweist; dadurch gekennzeichnet, daß die Temperatur des gesinterten und des nicht gesinterten Pulvers auf der Aufnahmefläche (26) gesteuert wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Abtastschritte das Ziel des Strahles (64) nur innerhalb der entsprechenden Grenzen der entsprechenden Querschnittsbereiche führen.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Schritte des Abtastens und des Sinterns außerdem die Schritte des Bewegens des Zieles des Strahles (64) in eine Rasterabtastung (66) und des Ein- und Ausschaltens des Strahles (64) während der Rasterabtastung (66) umfassen, wenn das Ziel sich innerhalb der Grenzen befindet.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Rasterabtastung (66) erhalten wird, indem der Strahl (64) in einer ersten Richtung (68) zurückgeführt wird, und indem der Strahl (64) aus der ersten Richtung in eine zweite Richtung (70) zurückgeführt wird, um auf eine im allgemeinen ebene Aufnahmefläche aufzutreffen.
5. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der Schritt der Rückführung des Strahles (64) die Verwendung eines Spiegelpaares (46, 47), das mit den entsprechenden Galvanometern (48, 49) verbunden ist, umfaßt, wobei der erste Spiegel (46) verschoben wird, um die Bewegung des Strahles (64) in der Aufnahmefläche (26) in einer ersten Hauptrichtung (68) zu bewirken, und wobei der zweite Spiegel (47) verschoben wird, um die Bewegung des Strahles (64) in der Aufnahmefläche (26) in einer zweiten Hauptrichtung (70) senkrecht zur ersten Richtung (68) zu bewirken.
6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Teil (52) mit einem Klebstoff imprägniert wird.
7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Pulver (22) kontinuierlich auf der Aufnahmefläche (26) aufgebracht wird.
8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Schritt des Aufbringens die folgenden Teilschritte umfaßt:
dosiertes Aufbringen einer Aufschüttung des Pulvers (106) in der Nähe eines Endes (110) der Aufnahmefläche (102); und
Bewegen einer gegenläufigen Walze (116) von einem Ende (110) zum anderen Ende (112) der Aufnahmefläche (102), um mit der Aufschüttung des Pulvers in Berührung zu kommen und hinter der sich bewegenden Walze (116) eine Schicht (164) des Pulvers zurückzulassen.
9. Vorrichtung für die Durchführung des Verfahrens nach Anspruch 1, die aufweist:
eine Energiequelle (12), die so funktionsfähig ist, daß sie einen gebündelten Energiestrahl (64) emittiert;
eine Konstruktion (28), die eine Aufnahmefläche (26) besitzt, auf der ein Teil (52) schichtartig hergestellt werden soll;
eine Einrichtung für das dosierte Aufbringen einer Schicht des sinterfähigen Pulvers (22) auf die Aufnahmefläche (26); und
einen Regler (16), der so funktionsfähig ist, daß er das Ziel des gebündelten Energiestrahles (64) führt, um selektiv innerhalb festgelegter Grenzen einen Abschnitt einer jeden Schicht (54, 55, 56, 57) des Pulvers (22), das auf die Aufnahmefläche (26) dosiert aufgebracht wurde, zu sintern,
wobei der Regler (16) eine Abtastanlage (42), um das Ziel des Energiestrahles (64) in die Aufnahmefläche (26) in einem sich wiederholenden Muster (66) zu bewegen, und einen Computer (40) umfaßt, der mit den festgelegten Grenzen einer jeden Schicht (54, 55, 56, 57) des Teiles (52) programmiert ist, um den Energiestrahl (64) einzuschalten, wobei sich das Ziel des Strahles (64) innerhalb der festgelegten Grenzen für jede Schicht (54, 55, 56, 57) befindet, während das Ziel des Strahles (64) in die Aufnahmefläche (26) bewegt wird, und wobei er funktionsfähig ist, um den Energiestrahl (64) über die Aufnahmefläche (26) zu führen, um ausgewählte Abschnitte der aufeinanderfolgenden Schichten (54, 55, 56, 57) des Pulvers (22) innerhalb der entsprechenden festgelegten Grenzen in Übereinstimmung mit den aufeinanderfolgenden Querschnittsbereichen eines Teiles zu sintern; und
wobei die Einrichtung für das dosierte Aufbringen (14) so funktionsfähig ist, daß die nachfolgenden Schichten des Pulvers (55, 56, 57) jeweils nach dem selektiven Sintern einer vorangegangenen Schicht (54, 55, 56) dosiert aufgebracht werden, so daß die gesinterten ausgewählten Abschnitte einer jeden der nachfolgenden Schichten mit den gesinterten Abschnitten einer vorangegangenen Schicht verbunden werden, um ein Teil (52) herzustellen, das eine Vielzahl von Schichten (54, 55, 56, 57) aufweist, die miteinander gesintert wurden; wobei die Vorrichtung dadurch gekennzeichnet wird, daß eine Einrichtung (132) für die Steuerung der Temperatur des gesinterten und des nicht gesinterten Pulvers auf der Aufnahmefläche (26) vorhanden ist.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Energiequelle einen Laser aufweist, so daß der Energiestrahl (64) ein Laserstrahl ist, und dadurch, daß der Regler (16) eine Einrichtung (42, 44, 35, 38) für das Führen des Zieles des Laserstrahles (64) in die Aufnahmefläche (26) und eine Einrichtung für das Steuern des Lasers umfaßt, indem der Strahl (64) ein- und ausgeschaltet wird, um das Pulver (22) in der Aufnahmefläche (26) selektiv zu sintern.
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Führungseinrichtung (42) so funktionsfähig ist, daß das Ziel des Laserstrahles (64) in eine Rasterabtastung (66) der Aufnahmefläche (26) bewegt wird.
12. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Führungseinrichtung eine oder mehrere Linsen (36, 38) umfaßt, um den Laserstrahl (64) zu bündeln.
13. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Führungseinrichtung ein Prisma (44) umfaßt, um die Richtung des Laserstrahles (64) zu verändern, der aus der Lasereinrichtung (12) emittiert wird.
14. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß eine Einrichtung (132) für das Zuführen von Luft mit geregelter Temperatur zum Teil (52) vorhanden ist, um die Temperatur des Teiles (52) zu mäßigen.
15. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der Computer (40) so funktionsfähig ist, daß die festgelegten Grenzen der ausgewählten Abschnitte einer jeden Schicht (54, 55, 56, 57) des Teiles (52) bestimmt werden, wodurch die Gesamtabmessungen des Teiles (52) erhalten werden.
16. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Einrichtung für das dosierte Aufbringen des Pulvers einen Trichter (104) für das Aufnehmen des Pulvers (106), eine Dosieraustrittsöffnung (108), die das Pulver (106) zur Aufnahmefläche (102) führt, und eine gegenläufige Walze (116) umfaßt, die sich über die Aufnahmefläche (102) bewegt, um das Pulver (106) auf der Aufnahmefläche (102) zu verteilen.
17. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Einrichtung für das dosierte Aufbringen (14) so funktionsfähig ist, daß ein Kunststoff-, Keramik-, Polymer- oder Metallpulver dosiert aufgebracht werden kann.
18. Verwendung einer Vorrichtung für die Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die Vorrichtung aufweist: eine Energiequelle (12), die so funktionsfähig ist, daß ein gebündelter Energiestrahl (64) emittiert wird; eine Konstruktion (28), die eine Aufnahmefläche (26) besitzt, auf der ein Teil (52) in schichtartiger Weise hergestellt werden soll; eine Einrichtung (14) für das dosierte Aufbringen einer Schicht eines sinterfähigen Pulvers (22) auf der Aufnahmefläche (26); und einen Regler (16), der funktionsfähig ist, um das Ziel des gebündelten Energiestrahles (64) so zu führen, daß innerhalb festgelegter Grenzen ein Abschnitt einer jeden Schicht (54, 55, 56, 57) des Pulvers (22), das auf der Aufnahmefläche (26) dosiert aufgebracht wurde, selektiv gesintert wird, wobei der Regler (16) so funktionsfähig ist, daß er den Energiestrahl (64) über die Aufnahmefläche (26) führt, um ausgewählte Abschnitte der aufeinanderfolgenden Schichten (54, 55, 56, 57) des Pulvers (22) innerhalb der entsprechenden festgelegten Grenzen in Übereinstimmung mit den aufeinanderfolgenden Querschnittsbereichen eines Teiles zu sintern; und wobei die Einrichtung für das dosierte Aufbringen (14) so funktionsfähig ist, daß die nachfolgenden Schichten des Pulvers (55, 56, 57) jeweils nach dem selektiven Sintern einer vorangegangenen Schicht (54, 55, 56) dosiert aufgebracht werden, so daß die gesinterten ausgewählten Abschnitte einer der nachfolgenden Schichten mit den gesinterten Abschnitten einer vorangehenden Schicht verbunden werden, um ein Teil (52) herzustellen, das eine Vielzahl von Schichten (54, 55, 56, 57) aufweist, die miteinander gesintert wurden; und dadurch gekennzeichnet, daß eine Einrichtung (132) für die Steuerung der Temperatur des gesinterten und des nicht gesinterten Pulvers auf der Aufnahmefläche (26) vorhanden ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/920,580 US4863538A (en) | 1986-10-17 | 1986-10-17 | Method and apparatus for producing parts by selective sintering |
| US10531687A | 1987-10-05 | 1987-10-05 | |
| PCT/US1987/002635 WO1988002677A2 (en) | 1986-10-17 | 1987-10-14 | Method and apparatus for producing parts by selective sintering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK194796A true HK194796A (en) | 1996-11-01 |
Family
ID=26802457
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK194796A HK194796A (en) | 1986-10-17 | 1996-10-24 | Method and apparatus for producing parts by selective sintering |
| HK205796A HK205796A (en) | 1986-10-17 | 1996-11-14 | Method and apparatus for producing parts by selective sintering |
| HK205896A HK205896A (en) | 1986-10-17 | 1996-11-14 | Method and apparatus for producing parts by selective sintering |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK205796A HK205796A (en) | 1986-10-17 | 1996-11-14 | Method and apparatus for producing parts by selective sintering |
| HK205896A HK205896A (en) | 1986-10-17 | 1996-11-14 | Method and apparatus for producing parts by selective sintering |
Country Status (15)
| Country | Link |
|---|---|
| US (5) | US5132143A (de) |
| EP (3) | EP0287657B2 (de) |
| JP (3) | JP2620353B2 (de) |
| KR (1) | KR960008015B1 (de) |
| AT (3) | ATE138293T1 (de) |
| AU (3) | AU603412B2 (de) |
| BG (1) | BG47343A3 (de) |
| BR (1) | BR8707510A (de) |
| DE (4) | DE3751818T2 (de) |
| DK (1) | DK329888A (de) |
| FI (1) | FI84329C (de) |
| HK (3) | HK194796A (de) |
| HU (1) | HUT56018A (de) |
| MC (1) | MC1931A1 (de) |
| WO (1) | WO1988002677A2 (de) |
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-
1990
- 1990-06-21 US US07/541,788 patent/US5132143A/en not_active Expired - Lifetime
- 1990-12-21 AU AU68346/90A patent/AU632195B2/en not_active Ceased
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1992
- 1992-07-10 US US07/911,879 patent/US5316580A/en not_active Expired - Lifetime
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1993
- 1993-03-17 AU AU35241/93A patent/AU659289B2/en not_active Ceased
- 1993-04-09 JP JP5083522A patent/JP2542783B2/ja not_active Expired - Lifetime
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1994
- 1994-05-31 US US08/251,609 patent/US5597589A/en not_active Expired - Lifetime
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1995
- 1995-06-07 US US08/484,125 patent/US5639070A/en not_active Expired - Lifetime
- 1995-06-07 US US08/478,272 patent/US5616294A/en not_active Expired - Fee Related
- 1995-11-14 JP JP7295716A patent/JP2800937B2/ja not_active Expired - Lifetime
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1996
- 1996-10-24 HK HK194796A patent/HK194796A/en not_active IP Right Cessation
- 1996-11-14 HK HK205796A patent/HK205796A/en not_active IP Right Cessation
- 1996-11-14 HK HK205896A patent/HK205896A/en not_active IP Right Cessation
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| PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |