EP3883748A1 - Method for additive manufacturing and system - Google Patents
Method for additive manufacturing and systemInfo
- Publication number
- EP3883748A1 EP3883748A1 EP19801312.0A EP19801312A EP3883748A1 EP 3883748 A1 EP3883748 A1 EP 3883748A1 EP 19801312 A EP19801312 A EP 19801312A EP 3883748 A1 EP3883748 A1 EP 3883748A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- segments
- irradiation
- segment
- building
- units
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/277—Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
- B29C64/282—Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED] of the same type, e.g. using different energy levels
-
- 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
-
- 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
- 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
- B29C64/171—Processes of additive manufacturing specially adapted for manufacturing multiple 3D objects
- B29C64/176—Sequentially
-
- 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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
- B29C64/241—Driving means for rotary motion
-
- 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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/277—Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the invention relates to a method for additive manufacturing of three-dimensional objects and a system for additive manufacturing of three-dimensional objects. Furthermore, the present invention relates to a computer-readable
- the document DE 10 2010 041 284 A1 describes a method and a system for selective laser sintering, the layer by layer
- the workpiece to be produced has at least partially a curved contour and is produced using laser energy using a plurality of linear energy inputs. Sub-sections of the contour which are spaced apart from one another are machined in accordance with a defined sequence of the linear energy inputs in order to avoid overheating of the workpiece.
- the invention has for its object to provide a method for additive manufacturing, which is efficient and simple in a cost-effective manner
- the task is made more specific by a process for additive manufacturing
- Segment along the direction of extension of the building platform, wherein at least one of the segments is designed as a single segment or at least one of the segments is divided into at least two sub-segments;
- Irradiation areas of the irradiation units in particular radiation units arranged next to one another, partially overlap or adjoin the radiation areas;
- the invention is based on the basic idea of providing a method which uses the radiation units in such a way that an optimal one
- Utilization is achieved by minimizing idle times.
- the process duration for producing one or more three-dimensional objects can be optimized or reduced.
- Irradiation units are freely adaptable in this way and can be aligned overlapping or adjacent to one another, so that the
- the irradiation times of the individual segments and / or partial segments for the selective solidification of a layer of construction material can be designed to be substantially evenly distributed in order to reduce the
- the adaptation of the irradiation areas can therefore take into account the layers in particular
- the geometry of the at least one three-dimensional object is generated by layers of the building material being gradually deposited on one another and solidified, in particular locally solidified.
- selective consolidation means that a layer of newly applied building material! is expediently solidified along the desired contour or the contours of the at least one three-dimensional object to be produced.
- the applied layer of building material is irradiated in a targeted manner by the radiation units along the geometry of the three-dimensional object to be produced.
- a layer of building material is selectively solidified in the sense of the present invention as soon as sufficient, expedient solidification of the layer of building material has taken place or has been achieved.
- a selectively solidified layer of building material accordingly forms part of the
- the installation space that is the volume of a system
- Construction platform in which the at least one or more three-dimensional objects can be built up in layers, divided into at least a first and a second segment.
- the layers of building material to be applied or deposited are to be assigned in sections to the first or second segment.
- the set construction level can be divided based on the segments.
- the construction platform is preferably provided as a circular or ring-shaped, oval-shaped, U-shaped, rectangular-frame-shaped or the like, so that a three-dimensional object or a plurality of three-dimensional objects can be produced over an angular range of 360 degrees along a circumferentially or circularly closed construction platform and can be arranged.
- a revolution of the coating unit can be understood to mean that the coating unit is moved over at least 360 degrees along the extent of the construction platform.
- the construction platform is therefore in particular the construction of the construction platform in
- the segments can be provided as individual segments or each have sub-segments.
- a segment can in turn be sub-divided into sub-segments or can be sub-divided.
- One of the at least two radiation units is assigned to one of the segments. Irradiation of subsegments of a segment by one of the irradiation units for selective consolidation can take place serially, that is to say one after the other.
- sub-segments can be alternately selectively consolidated by means of the assigned radiation unit of the segment such that, for example, the coating unit can move through the sub-segments and the irradiation unit switches over to one of the sub-segments for the selective consolidation of the other sub-segment before the required irradiation period has expired.
- an irradiation unit can switch between two subsegments as required during the selective solidification, in particular before the irradiation time required for one of the subsegments has expired. If a change between the sub-segments by the assigned
- Irradiation unit takes place and in a sub-segment if necessary
- Passing the coating unit through a segment is made possible, while the selective consolidation can be continued alternately in one of the sub-segments.
- the invention as a switching off of the radiation unit or as a change of the radiation unit between subsegments for selective consolidation, the irradiation unit being switched from one subsegment to the other subsegment.
- Construction material is selectively solidified continuously along the sub-segments.
- the coating unit can be movable continuously, in particular at a constant speed, or discontinuously in the direction of extension of the building platform or building level during the production process of at least one three-dimensional object.
- the coating unit can be moved continuously and preferably without interruption, regardless of whether a new layer of building material is applied along the set building level.
- the speed at which the coating unit is moved is preferably set such that an advantageous minimization of idle times can be achieved during the manufacture or manufacture of the at least one three-dimensional object.
- the coating unit is moved at least at a minimum speed, the minimum speed being
- Filing or orders corresponds to a layer of construction material.
- the coating unit can preferably have a maximum
- Filing or orders corresponds to a layer of construction material. In this way, the time required for one circulation of the coating unit along the extent of the building platform or the building level can be minimized.
- An idling run of the coating unit with at least the minimum speed to be maintained is carried out if a circulation period of the coating unit for applying the at least one layer of
- Construction material would end before the required irradiation duration in at least one of the segments along the set construction level has not yet been reached or has expired. Accordingly, an idling run is carried out if the coating unit would move into a segment that has not yet been fully selectively hardened when a new layer of building material is applied.
- the coating unit can be stopped and temporarily parked as a parking segment, which is already selectively solidified, in particular until a new layer of building material is applied along the segments or partial segments can.
- the application of a layer of building material is only carried out in a coherent, complete circulation along the building level. If this is not possible due to segments or subsegments that have not yet been selectively solidified, an idle run is performed by the
- the building material is selectively solidified in a segment if at least one layer of building material has been deposited along the entire segment or an entire sub-segment by activating the respectively assigned radiation unit.
- Coating unit has deposited a complete layer of building material.
- the respectively assigned radiation unit can only be activated if the coating unit is not in the respective segment or sub-segment which is to be selectively solidified. Furthermore, the respective irradiation unit for a segment or sub-segment of a segment is only activated when the last layer applied by
- the radiation unit can be deactivated in the sense of the present invention if a segment or the associated sub-segments is / are selectively solidified or when the
- Orders of at least one layer of the building material is deactivated, the coating unit being able to be moved through any number of segments and / or partial segments without applying or depositing or releasing a new layer of building material until the
- Coating unit reaches a parking segment or so that the
- Coating unit exercises at least one idle run.
- the application of building material can be deactivated by means of the coating unit as soon as at least one complete layer of building material has been deposited in all segments and / or partial segments.
- a complete layer is understood to mean that building material is deposited over the entire extent of a segment or partial segment.
- the coating unit performs at least one complete circulation along the building platform in order to deposit a layer of building material. If a segment or sub-segment has only been partially re-coated, the subsequent laying down of a further layer over the entire extent of the segment or sub-segment is provided to provide a complete layer of construction material, in particular after the other segments in the course of the most recent circulation the coating unit.
- the coating unit can be moved during the entire process duration or temporarily in the direction of extension of the building platform, a new layer of building material being dispensed as required. In this sense, the coating unit can make uninterrupted revolutions along the extension of the construction platform.
- Movement of the coating unit along the extension of the construction platform can be understood as an idle run.
- An idling run can comprise one or more segments or partial segments or comprise one or more circulations or partial rotations of the coating unit.
- the coating unit can carry out any number of cycles or partial cycles to carry out idling runs or in a predeterminable number
- the radiation units which are each assigned to a segment and / or the sub-segments of a segment, have radiation areas. Under the radiation area one
- the radiation unit is to be understood as the region along the set building level which can be selectively solidified by means of the respective radiation unit.
- Irradiation area of an irradiation unit cover the respectively assigned segment and / or extend beyond the assigned segment into an adjacent segment.
- the radiation area of at least one of the radiation units can be adapted as required.
- the irradiation area of at least one irradiation unit can preferably be adapted or readjusted after a plurality of layers of the building material, so that a total irradiation duration for the selective solidification of the individual ones
- Layers of building material can be minimized.
- individual radiation areas can be adapted as required after individually applied and selectively solidified layers of building material.
- An irradiation area can be adapted by adapting the position of the respective irradiation unit and / or by changing the orientation of the respective irradiation unit.
- the change in the position of an irradiation unit describes, in particular, its arrangement along the direction of extension of the construction platform and thus a longitudinally displaceable position. Alignment of a
- Irradiation unit describes in particular the angular orientation or inclination of the irradiation unit and / or a beam path of the irradiation unit, e.g. against the horizontal.
- An irradiation area can accordingly take place according to the invention by a longitudinal displacement of an irradiation unit in the direction of extension of the construction platform and / or by changing the angular orientation of the irradiation unit or the beam path of the
- Solidification of at least one applied layer of building material can an efficient and time-saving method for the additive manufacturing of at least one three-dimensional object is provided, in particular if the punishment units are used to optimize or minimize the
- Total exposure times can be adapted if necessary.
- the relative position between the building platform and the coating unit is changed continuously or discontinuously to provide a changed building level.
- Coating unit speed in the sense of the present invention describes in particular the speed at which the
- Coating unit moved along the extent of the building platform, in particular in the horizontal direction.
- the speed of the relative movement between the building platform and the coating unit describes the speed in the course of the change in the relative position between the building platform and
- Coating unit especially in the vertical direction.
- Construction platform can be provided in continuous or discontinuous form. Furthermore, the relative movement, preferably at least in the
- Construction platform take place continuously.
- a continuous or continuous, that is to say uninterrupted, adjustment of the building level can thus take place by means of the relative movement between the building platform and the coating unit in order to change the relative position.
- the relative movement or readjustment of the building level can be continued in one segment during the application of a layer of building material as well as during an idling run of the coating unit or during the parking of the coating unit.
- a discontinuous change in the relative position between the building platform and the coating unit that is to say a gradual adjustment of the building level, is possible.
- the coating unit it is also possible for the coating unit to be temporarily stopped, in particular to change the relative position between the building platform and the coating unit during an empty driveway or within a parking segment. Continuous or discontinuous movement of the coating unit is possible.
- Construction material carried out to minimize the need
- the irradiation times of the individual segments can advantageously be matched to one another by targeted distribution of the irradiation areas of the irradiation units or can be divided between the different irradiation units, so that the selective consolidation of the segments or
- Sub-segments preferably occupies a period that is as comparable as possible.
- the total irradiation time of one or more layers of building material can be optimized.
- the radiation areas can preferably be individual
- Irradiation units can be adapted such that over a variety of
- Total exposure time is achieved.
- the position and / or orientation of the irradiation units required for this can deviate from a position and / or orientation with which a minimum total irradiation time of the individual layers of construction material could be achieved.
- the radiation areas of the radiation units can thus be averaged in this way for, for example, five successive layers of building material! can be set in order to minimize the process time for producing at least one three-dimensional object.
- segments along themselves become partial
- a selective solidification by one of the two radiation units can take place along overlapping radiation areas of two radiation units.
- the two radiation units can partially partially solidify the layer of building material along the overlapping radiation regions.
- particularly complicated and complexly selectively solidified structures can be selectively solidified in an advantageous and time-efficient manner by means of two radiation units on the basis of their overlapping radiation areas.
- the radiation areas of two radiation units can adjoin one another, in particular along the boundary between their respectively assigned segments or sub-segments.
- Irradiation areas can be adapted in such a way that, if necessary, optimization of the total irradiation time is possible for the selective solidification of the individual layers of construction material.
- the position and / or orientation of the radiation units is automatically and / or manually adapted.
- Irradiation areas are carried out by a user.
- a preferably fully automatic optimization of the manufacturing process by adapting the irradiation areas as required is conceivable.
- three-dimensional object can be provided.
- a system which is used for the additive manufacturing of three-dimensional objects by applying a building material in layers and locally selectively solidifying the
- Building material according to the method of the present invention is suitable.
- the system according to the invention is designed with the installation space that
- Construction platform within the construction space on which the at least one object to be produced can be built up in layers
- the at least one coating unit for applying the construction material in layers in a construction level which is provided parallel to the construction platform, and at least two
- Irradiation units for locally selective solidification of the building material on the building level.
- the installation space is divided into at least a first segment and a second segment in the direction of extension of the construction platform and at least one of the segments is designed as a single segment or at least one of the segments is divided into at least two subsegments, with each segment or the subsegments of a segment at least one of the
- Irradiation units are assigned and the irradiation areas
- Irradiation units in particular arranged side by side
- Irradiation units partially overlap or adjoin the irradiation areas.
- the radiation areas along the building level can be adapted by adapting the position and / or the orientation of at least one of the radiation units such that a total radiation duration for the selective solidification of one or more layers of the
- the at least one coating unit is used to apply the building material in layers in a building plane that is parallel to the building platform
- the construction platform thus represents the basic level of the system on which the at least one three-dimensional object can be generated.
- the building level is therefore preferably arranged on the building platform.
- the first building level can be used to apply the first layer of
- Building material should be vertically offset from the building platform in such a way that below the finally selectively solidified layer of
- a powder bed or non-selectively solidified material bed remains. Detachment of the finished three-dimensional object from the construction platform can thus be facilitated.
- the coating unit can be arranged so that it is inclined with respect to the vertical or horizontal, so that expedient application of building material along the planned, set construction level.
- the coating unit can be arranged inclined such that
- the building level describes in particular the current working level in which a new, further layer of building material is to be applied or selectively solidified.
- the re-enactment of the building level or a re-building level thus describes the change in the building level in order to be able to apply and selectively solidify a new, next layer of building material, in the sense of layer-by-layer production or generation of at least one three-dimensional object.
- Relative position between the coating unit and the building platform take place, in particular by moving or moving the building platform or the coating unit in the vertical direction.
- the at least two segments and / or their sub-segments form a closed path, in particular a circular path, along the building level, in particular so that the coating unit passes from the first segment into the second segment directly or indirectly via at least one further segment or its sub-segments and can pass from the second segment into the first segment.
- the segments or sub-segments are provided such that a
- first and second segments there can be direct transitions between the first and second segments, the second and third segments and the third and first segments.
- An indirect transition would be, for example, between the first and third segment with which
- the construction platform is preferably designed in a ring shape, several or a single three-dimensional object can be produced in a circular manner or over an angular range of 360 degrees by means of the radiation units and the coating unit.
- the system is designed to provide a relative movement for changing the vertical relative position between the construction platform and the coating unit within the construction space continuously or discontinuously.
- the adjustment or readjustment of the building level can be done during the
- the coating unit continues to move in the direction of extension of the building platform during the readjustment of the building level, that is to say during the vertical relative movement between the coating unit and the building platform.
- the adjustment for the following building level can already be made or started.
- the relative movement or readjustment of the building level can also take place during a
- the idling run of the coating unit can be started or continued.
- Relative movement between the build platform and the coating unit are temporarily interrupted, especially in the sense of a discontinuous movement of the coating unit.
- the radiation area of at least one radiation unit can be adapted in such a way that a time-efficient selective one
- segments along selectively overlapping radiation areas of the at least two radiation units can be selectively solidified by one or both radiation units
- the deposited layer of building material can be solidified along the overlapping radiation areas by one of the two radiation units.
- the deposited layer of building material along the overlapping radiation areas can in each case be selectively solidified by one of the two radiation units.
- time-efficient or time-optimized selective solidification can be carried out using the adaptable one
- the position and / or the orientation of individual radiation units can be automatically and / or manually adapted.
- a manual operation or setting of the radiation areas can be carried out by a user of the system, as well as a fully automatic control of the system, in particular for setting the radiation areas of the radiation units.
- the system has a control unit, which is preferably designed at least for adapting the irradiation areas and / or for irradiating overlapping irradiation areas along the segments in the building plane by at least two irradiation units by changing the position and / or the orientation of the
- Irradiation units for the selective solidification of the applied layer of building material in the building plane of the at least one three-dimensional object to be produced can be changed, in particular between the beginning and the end of the production of the at least one three-dimensional object.
- control unit is furthermore at least designed to particularly control the movement and / or the duration of one revolution or one revolution period of the coating unit and the application of build-up material by the coating unit, activation and deactivation of at least one of the radiation units, preferably a plurality of radiation units preferably all irradiation units, and / or the execution of the vertical relative movement between the construction platform and the
- control unit of the system according to the invention is preferably provided to control and / or regulate the system at least as required in the sense of the method according to the invention.
- control unit is in particular designed to use the system to implement an inventive system
- An efficient and process duration-optimized, additive manufacturing of at least one three-dimensional object can be provided.
- computer-readable storage medium which contains instructions which cause at least one processor, in particular a processor of the control unit of a system according to the invention, to implement a Implement method if the instructions are executed by the at least one processor.
- Fig. 5 shows an embodiment of a system for
- FIG. 1 shows a schematic cross-sectional view of a construction platform 10, which is divided into a total of four segments A; B; C; D is divided. According to FIG. 1, five selectively solidified layers for forming at least one three-dimensional object 1 are present on the construction platform.
- the building level 20 provided according to FIG. 1 is set on the uppermost, selectively solidified layer of building material 30 of the object 1 to be manufactured.
- a coating unit 40 according to FIG. 1 places a layer over the extent of the first segment A.
- a movement of the coating unit 40 is a movement from left to right through the segments A to D along the
- the segments A; B; C; D comparable, in particular identical, exposure times as required for the selective solidification of applied building material 30.
- a preferably annular design of the construction platform 10 is illustrated in FIGS. 1 to 3 in that the coating unit 40 passes directly from the fourth segment D into the first segment A, in order to carry out a circular movement or a revolution.
- Coating unit 40 may include a layer of build material 30 along sub-segments Al; A2; Bl; B2; CI; C2; Dl; Apply D2 to deposit a full layer of build material 30.
- the partial segments A1-D2 of the segments A-D can be provided with comparable, in particular identical, exposure times as required for the selective solidification of the applied building material 30.
- Fig. 2 is in the first sub-segment Al; Bl; CI; Dl of segments A; B; C; D the selective solidification of the building material 30 by means of the respective
- the sub-segments Al; A2; Bl; B2; CI; C2; Dl; D2 each of a segment A; B; C; D is assigned a common irradiation unit SO, which sub-segments Al; A2; Bl; B2; CI; C2; Dl; D2 of a segment A; B; C; D can solidify selectively or alternately. It is thus shown in FIG. 2 that after the application of a complete layer of building material 30, the first sub-segment Al; Bl; CI; Dl of segments A; B; C; D is selectively solidified.
- Respective progress indicators 52 indicate the progress of the selective consolidation. It is shown that, according to FIG. 2, the selective solidification of the first sub-segment A1 of the first segment A is completed until the coating unit 40 has reentered. Then the second
- Irradiation unit 40 selectively solidified. After the first subsegments Al; Bl; CI; Dl are selectively solidified, the individual radiation units 50 can each with the selective solidification of the second sub-segment A2; B2; C2; Continue D2.
- the coating unit 40 can thus move into the selectively solidified first sub-segment A1 of the first segment A, which can be provided as a parking segment according to FIG. 3.
- Radiation duration selectively solidified.
- Irradiation areas of the irradiation units 50 are shown, which are assigned to the first segment A and the second segment B.
- first and second segments A; B shown as individual segments.
- the irradiation units 50 are essentially centered with respect to the respective segments A; B positioned. Furthermore, according to FIG. 4a, segments A of the same size are located; B before to make a comparable
- FIG. 4b shows how the radiation units 50 of the first and second segment A; B form adjacent radiation areas.
- the radiation areas according to FIG. 4b delimit along the boundary between the first and second segment A; B to each other.
- the first segment A and the second segment B can be selectively solidified solely by the respectively assigned radiation unit 50.
- FIG. 4c also shows adjacent radiation areas of adjacent segments A; B shown.
- the segments A; B are with different sizes designed to be comparable
- the irradiation units 50 can be displaced or displaceable in the direction of extension of the building platform 10. Furthermore, an irradiation unit 50 according to FIG. 4c, here of the second segment B, can also be off-center of the respectively assigned segment A; B; C; D may be arranged.
- the first and second segment A; Irradiation units 50 assigned to B project with their irradiation areas into the adjacent segments A; B; C; D in and are thus in sections for selective consolidation in these adjacent segments A; B; C; D can be used.
- the irradiation unit 50 of the first segment A along the overlapping irradiation areas can adjoin the adjacent segments B; D at least partially solidify selectively.
- the irradiation unit 50 assigned to the second segment B can adjoin the adjacent segments C; A selectively solidify A at least in sections.
- the irradiation units 50 can each have one
- the alignment of the radiation units or their beam path can be adaptable in such a way that the respective
- Irradiation unit 50 into the adjacent segment A; B; C; D can shine into it.
- the overlapping areas of the radiation units 50 shown in FIG. 4d can be selectively solidified by one of the radiation units 50 or partially solidified by one of the two radiation units 50. In this way, an efficient, selective consolidation of the last applied layer of building material 30 is possible.
- FIG. 5 shows an exemplary embodiment of a system according to the invention for additive manufacturing of at least one three-dimensional object 1 in a perspective cross section.
- the system has the construction platform 10, above which a construction space for the layered construction of at least one three-dimensional object 1 is formed.
- a three-dimensional object 1 or a plurality of three-dimensional objects 1 can be along the ring-shaped or circular
- Extension of the building platform 10 can be built up in layers.
- Coating unit 40 is spaced above and vertically
- Construction platform 10 arranged and can apply or store building material 30 along the respectively set building level 20 in the sense of a layered construction.
- Irradiation units 50 distributed over the extent of the ring-shaped construction platform 10.
- the irradiation units 50 are each of the segments A; B; C; D assigned and arranged for selective consolidation.
- time-optimized, efficient production of at least one can be carried out on the basis of the targeted use or the specific adaptation of the radiation units 50, the radiation areas of which can be adapted as required and can be provided overlapping or adjacent to one another
- three-dimensional object 1 are made possible.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102018129028.4A DE102018129028A1 (en) | 2018-11-19 | 2018-11-19 | Additive manufacturing process and system |
PCT/EP2019/080610 WO2020104212A1 (en) | 2018-11-19 | 2019-11-07 | Method for additive manufacturing and system |
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EP3883748A1 true EP3883748A1 (en) | 2021-09-29 |
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EP (1) | EP3883748A1 (en) |
CN (1) | CN113226712B (en) |
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WO (1) | WO2020104212A1 (en) |
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DE102010041284A1 (en) * | 2010-09-23 | 2012-03-29 | Siemens Aktiengesellschaft | Method for selective laser sintering and equipment suitable for this method for selective laser sintering |
US8915728B2 (en) * | 2012-01-27 | 2014-12-23 | United Technologies Corporation | Multi-dimensional component build system and process |
DE102013205724A1 (en) * | 2013-03-28 | 2014-10-02 | Eos Gmbh Electro Optical Systems | Method and device for producing a three-dimensional object |
US9694541B2 (en) * | 2014-06-09 | 2017-07-04 | Raytheon Company | Selective composite manufacturing for components having multiple material properties |
GB2546016B (en) * | 2014-06-20 | 2018-11-28 | Velo3D Inc | Apparatuses, systems and methods for three-dimensional printing |
CN208637788U (en) * | 2014-11-24 | 2019-03-22 | 斯特塔思有限公司 | Increasing material manufacturing system with laser assembly |
US20160167303A1 (en) * | 2014-12-15 | 2016-06-16 | Arcam Ab | Slicing method |
EP3120967B1 (en) * | 2015-07-20 | 2019-06-12 | SLM Solutions Group AG | Method and device for controlling an irradiation system in dependence on a work piece geometry |
DE102015118162A1 (en) * | 2015-10-23 | 2017-04-27 | Fit Ag | Device for producing three-dimensional objects |
WO2017079091A1 (en) * | 2015-11-06 | 2017-05-11 | Velo3D, Inc. | Adept three-dimensional printing |
CN108698126A (en) * | 2015-12-10 | 2018-10-23 | 维洛3D公司 | Consummate 3 D-printing |
WO2017143077A1 (en) * | 2016-02-18 | 2017-08-24 | Velo3D, Inc. | Accurate three-dimensional printing |
DE102016203582A1 (en) * | 2016-03-04 | 2017-09-07 | Airbus Operations Gmbh | Additive manufacturing system and process for additive manufacturing of components |
DE102016209933A1 (en) * | 2016-06-06 | 2017-12-07 | Eos Gmbh Electro Optical Systems | Apparatus and method for generatively producing a three-dimensional object |
EP3492244A1 (en) * | 2016-06-29 | 2019-06-05 | VELO3D, Inc. | Three-dimensional printing system and method for three-dimensional printing |
EP3281727B8 (en) * | 2016-08-10 | 2023-11-22 | Nikon SLM Solutions AG | Apparatus for producing three-dimensional workpiece comprising a plurality of powder application devices |
US10611092B2 (en) * | 2017-01-05 | 2020-04-07 | Velo3D, Inc. | Optics in three-dimensional printing |
US10369629B2 (en) * | 2017-03-02 | 2019-08-06 | Veo3D, Inc. | Three-dimensional printing of three-dimensional objects |
DE102017205027A1 (en) * | 2017-03-24 | 2018-09-27 | SLM Solutions Group AG | Apparatus and method for producing three-dimensional workpieces |
US20180281237A1 (en) * | 2017-03-28 | 2018-10-04 | Velo3D, Inc. | Material manipulation in three-dimensional printing |
US10272525B1 (en) * | 2017-12-27 | 2019-04-30 | Velo3D, Inc. | Three-dimensional printing systems and methods of their use |
US10144176B1 (en) * | 2018-01-15 | 2018-12-04 | Velo3D, Inc. | Three-dimensional printing systems and methods of their use |
WO2019147233A1 (en) * | 2018-01-24 | 2019-08-01 | Hewlett-Packard Development Company, L.P. | Method and apparatus for build material heating |
EP3520999B1 (en) * | 2018-02-01 | 2021-09-29 | CL Schutzrechtsverwaltungs GmbH | Apparatus for additively manufacturing three-dimensional objects |
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DE102018129028A1 (en) | 2020-05-20 |
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