EP3935455A1 - Procédé et système de fabrication d'un objet tridimensionnel - Google Patents

Procédé et système de fabrication d'un objet tridimensionnel

Info

Publication number
EP3935455A1
EP3935455A1 EP20710882.0A EP20710882A EP3935455A1 EP 3935455 A1 EP3935455 A1 EP 3935455A1 EP 20710882 A EP20710882 A EP 20710882A EP 3935455 A1 EP3935455 A1 EP 3935455A1
Authority
EP
European Patent Office
Prior art keywords
data
post
treatment
dimensional object
process data
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
Application number
EP20710882.0A
Other languages
German (de)
English (en)
Inventor
Andreas SCHULTHEISS
Andreas Geitner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rapid Shape GmbH
Original Assignee
Rapid Shape GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rapid Shape GmbH filed Critical Rapid Shape GmbH
Publication of EP3935455A1 publication Critical patent/EP3935455A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-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 programme data in numerical form
    • G05B19/4097—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 programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
    • G05B19/4099—Surface or curve machining, making 3D objects, e.g. desktop 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
    • B29C64/188—Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
    • 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
    • B29C64/35—Cleaning
    • 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
    • B29C64/379—Handling of additively manufactured objects, e.g. using robots
    • 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
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/20—Post-treatment, e.g. curing, coating or polishing
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49013—Deposit layers, cured by scanning laser, stereo lithography SLA, prototyping
    • 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
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • the present invention relates to a method for producing a three-dimensional object by solidifying a material solidifiable by radiation with a system comprising at least two system devices, with at least one system device in the form of a solidifying device for solidifying, in particular in layers or continuously, the material solidifiable by radiation is formed, wherein at least one system device is formed in the form of an aftertreatment device, in which method the three-dimensional object is solidified with the Ver solidification device and after the solidification is aftertreated with the Nachbe treatment device.
  • the present invention also relates to a system for producing a three-dimensional object by solidifying a material solidifiable by radiation, which system comprises at least two system devices, at least one system device in the form of a solidifying device for solidifying, in particular in layers or continuously, one solidifying by radiation Material is formed and wherein at least one system device in the form of an aftertreatment device for aftertreatment of the three-dimensional object is formed after solidification.
  • the system devices of the system that is to say in particular the solidifying device and the aftertreatment devices
  • the solidifying device and the aftertreatment devices are designed as individual devices
  • an increased operating and monitoring effort is required by an operator. This takes, for example, the solidified three-dimensional object from the solidification device and then inserts it into the desired post-treatment device. Process parameters for the post-treatment must then be entered manually by the operator. Errors often occur here, which ultimately lead to the three-dimensional object becoming unusable.
  • this object is achieved according to the invention in that the at least two system devices are connected to one another directly or indirectly in a signal-effective manner in order to exchange data.
  • the proposed development of a known method has the particular advantage that those data that previously had to be entered manually or manually by an operator into the respective system devices can now be automatically exchanged by the system.
  • corresponding data can be transferred or transferred from the solidification device or another system device, for example a data processing device, in particular to one or more post-treatment devices, so that the downstream system devices can be operated automatically with the correct process parameters for post-treatment of the solidified three-dimensional object . Transmission errors by an operator can be excluded in this way. Overall, this results in a more reliable manufacturing process for three-dimensional objects.
  • Process validation is also possible in a simple manner.
  • the system devices of the system can, in particular, be connected to one another in a wired or contactless manner in order to communicate with one another in the desired manner.
  • the system devices can be integrated into a radio network or a wired data network in order to implement the data exchange.
  • the at least two system devices are each provided independently functioning and spatially separated from one another.
  • the at least two system devices are therefore in particular individual devices that do not necessarily have to be part of the described system.
  • the independence of the at least two system devices means that systems that are individually optimized for the respective needs can be set up.
  • these can include one or more consolidation devices and one or more aftertreatment devices.
  • one or more processing devices can also be provided.
  • the data processing devices can each be encompassed by the system devices and integrated into them.
  • the minimum At least two system devices each also include an output device or display device in order to display the respective process steps in the production of the three-dimensional object to an operator or monitoring person.
  • process parameters of the manufacturing process can also be displayed.
  • a process data set is generated for the three-dimensional object to be produced and assigned to it, if the process data set comprises process data, if the process data comprises post-treatment data that define the post-treatment with the post-treatment device, and if the process data record and / or the process data and / or the aftertreatment data are automatically exchanged unidirectionally or bidirectionally between the at least two system devices.
  • the generation of a process data record makes it possible in particular to define a so-called print job for each three-dimensional object to be produced.
  • All relevant data for the production can be stored in this process data record, for example the type of object, the type of available material and process data and post-treatment data, such as an exposure wavelength or a cleaning medium suitable for the solidifiable material and a post-exposure time.
  • any data characterizing the three-dimensional object and data required for the manufacturing process can be combined here.
  • the process data set, the process data and / or the post-treatment data can ultimately be exchanged between the at least two system devices as required. Communication can take place here unidirectionally or bidirectionally, that is to say data can be exchanged from one system device to the next system device, which carries out the subsequent treatment steps.
  • a result data set is generated for the manufactured three-dimensional object and assigned to it, if the result data set comprises result data and if the result data comprise post-treatment result data that are recorded during the post-treatment with the at least one post-treatment device.
  • Such a result data set with result data and optional post-treatment result data enables, in particular, a complete validation of the manufacturing process. This is because not only the process data for production are recorded, but also result data, which can be used in particular to automatically evaluate the quality of the three-dimensional object produced and, optionally, treated.
  • the result data can in particular also include information on whether or not post-treatment steps have been carried out at all, in particular completely. This makes it easy to document for each object whether the manufacturing process was carried out as planned or not. This enables the production of the three-dimensional object to be validated in a defined and simple manner.
  • the result data record and / or the result data and / or the post-treatment result data are automatically exchanged unidirectionally or bidirectionally between the at least two system devices.
  • the data mentioned can be transmitted, for example, to a subsequent system device or a system device connected upstream in the manufacturing process.
  • the respective data can be transferred to all system devices of the system, so that an operator can, for example, use a display device to see the current status of the manufacturing process for the three-dimensional object, i.e. in particular the status of a so-called Print jobs, is.
  • the process data set preferably comprises the result data set or the result data set comprises the process data set. Such a procedure enables, in particular, the merging of all data relating to the manufacturing process in a single data set.
  • the process data record is assigned a process data record identifier.
  • the process data record identifier can be displayed to an operator during processing. For example, this can be saved in the form of a full text, for example "Mr. Müller's upper jaw model”.
  • the process data record identifier can alternatively or additionally be arranged or formed on the solidified three-dimensional object and in this way assigned to the process data record.
  • the process data record identifier is assigned in the form of a code.
  • a code can be a numeric or alphanumeric code, a barcode or a QR code. This can be arranged or formed on or on the three-dimensional object.
  • the process data record identifier can be arranged or embodied on the three-dimensional object and / or on an order document.
  • the order document can be designed, for example, in the form of a printed document or also as an order file. In this way, all relevant process and result data can be queried for each three-dimensional object if necessary.
  • the process data record includes hardening data which define the hardening of the hardenable material for forming the three-dimensional object.
  • the consolidation device is advantageously controlled on the basis of the consolidation data. A solidification of the three-dimensional object with the solidification device can thus take place practically automatically.
  • the aftertreatment device is advantageously controlled on the basis of the aftertreatment data.
  • the solidified three-dimensional object can be post-treated in an optimal way.
  • this enables a high level of quality to be achieved in the manufacture of three-dimensional objects.
  • the solidification data include the process data record identifier, at least one digital irradiation mask, an irradiation time, an irradiation wavelength, an irradiation intensity, an irradiation temperature, post-exposure data for post-exposure of the solidified three-dimensional object and / or a type of solidifiable material.
  • the consolidation data can also include further, not mentioned data, which may be necessary or helpful in order to control the consolidation device in an unambiguous manner to consolidate the material that can be consolidated to form the three-dimensional object.
  • the post-treatment data advantageously include cleaning data for cleaning the solidified three-dimensional object and / or post-exposure data for post-exposure of the solidified three-dimensional object.
  • cleaning data can define a cleaning process and / or be used to control the same, post-exposure data in particular to control a post-exposure device.
  • the cleaning data contains the process data record identifier, a type of material, a cleaning medium, a cleaning time, a cleaning intensity, a cleaning temperature, a drying time and / or a drying temperature.
  • further post-exposure data can be determined automatically, for example from a corresponding database, and stored or transferred to the process data set as post-exposure data.
  • the post-exposure data include the process data set identifier, a type of solidifiable material, a post-exposure wavelength, a post-exposure time, a post-exposure temperature and / or a post-exposure intensity.
  • the respective process parameters for the specific print job can be transferred with high reliability and, for example, queried by the post-exposure device and automatically implemented.
  • the system comprises at least two post-treatment devices and if at least one post-treatment of the solidified three-dimensional object is carried out with at least one of the at least two post-treatment devices.
  • an aftertreatment device can be designed in the form of a cleaning device and an aftertreatment device in the form of a Nachbelichtvorrich device. Solidified three-dimensional objects can be cleaned and re-exposed for optimal curing.
  • the at least two post-treatment devices can therefore in particular be used alternatively or cumulatively for post-treatment of an object.
  • two or more post-treatments can also be carried out with the same post-treatment device.
  • the post-treatment data are generated or changed on the basis of or as a function of the hardening data.
  • This procedure makes it possible in particular to adapt the post-treatment data individually to the three-dimensional object, for example to its shape and / or Size. In particular, this can all take place automatically, so that a high production quality can be ensured and the risk of errors due to incorrect entries by an operator can be minimized.
  • the result data include actual consolidation data that are recorded during consolidation with the consolidation device.
  • deviations in the consolidation of target data, which are specified above as consolidation data can be determined in this way.
  • a production quality can be determined automatically, for example by comparing the hardening data and the actual hardening data.
  • the post-treatment result data include post-treatment actual data that are recorded during post-treatment with the post-treatment device.
  • the actual post-treatment data can be used in particular to determine or evaluate a quality of the three-dimensional object produced. Such a determination or evaluation can in particular take place automatically by the system. This enables an objective determination of product and process quality.
  • the system comprises a system device in the form of a data processing device, in particular in the form of a central data processing device, and if the process data record and / or the result data record is managed by the data processing device.
  • the central processing device can be connected in a control-effective manner to all system devices in order to exchange data.
  • the data processing device can then in particular manage the data and data records mentioned. This is to be understood in particular as processing them, exchanging them with system devices and storing them.
  • an evaluation variable is determined on the basis of the result data, in particular by comparing the actual hardening data with the hardening data and / or the actual post-treatment data with the post-treatment data.
  • the evaluation variable of a quality of the three-dimensional object can be determined with a data processing device. This can be the central data processing device or a data processing device that is included in one of the system devices.
  • the evaluation variable determined for the three-dimensional object is output and / or assigned to the process data record and / or the result data record.
  • the evaluation variable is output, for example on a display device of one of the system devices, an operator can immediately recognize whether a quality of the three-dimensional object meets the requirements or not. Further processing of the assessment variable is possible in a simple manner if it is assigned or added to the process data record and / or the result data record.
  • the hardening data are preferably generated on the basis of 3D data of the three-dimensional object.
  • the consolidation device can be controlled in a simple manner with this consolidation data.
  • the 3D data of the three-dimensional object to be produced are generated with a system device in the form of a 3D scanning device and / or on the basis of construction data.
  • a system device in the form of a 3D scanning device and / or on the basis of construction data.
  • three-dimensional objects can be copied in a simple manner in that they are scanned with a 3D scanning device and then identical three-dimensional objects are produced using the method described.
  • Digital data is available, for example, when the three-dimensional object is designed and the construction data is used to calculate consolidation data for controlling the consolidation device.
  • a type of solidifiable material is preferably specified by a user. If the material that can be solidified is specified, various process parameters arise for solidification and any subsequent treatments inevitably, since for example only certain cleaning medium or only certain wavelengths should be used for post-exposure in order to avoid damage to the solidified three-dimensional object.
  • the object set out at the beginning is achieved according to the invention in a system of the type described at the outset in that the at least two system devices are directly or indirectly connected to one another in a signal-effective manner for the exchange of data.
  • Such a signal-effective connection can be wired or contactless, for example via a radio network.
  • the system may include more than two system devices, particularly three, four, five or more. These can all be connected to each other either directly or indirectly for data exchange.
  • downstream system devices can communicate with one another and a system device of the respective downstream system device can transmit process data that are required, for example, for correct post-treatment of the solidified three-dimensional object.
  • the at least two system devices are independently functional and arranged spatially separated from one another or are formed. This refinement of the system makes it possible, in particular, to network the system devices as desired and in this way to form any desired systems. The independence of the at least two system devices also makes it possible to use them separately from the system. For example, existing system devices can be interconnected by appropriate networking to form a system according to the invention.
  • the system is designed to assign a process data set to the three-dimensional object to be produced, if the process data set comprises process data, if the process data is post-treatment Include treatment data that define the aftertreatment with the aftertreatment device, and if the system is designed for automatic unidirectional or bidirectional exchange of the process data set and / or the process data and / or the aftertreatment data between the at least two system devices.
  • a process data set makes it possible, in particular, to assign all relevant data required for the production process to the object to be produced, in order to enable traceability and quality assurance of the production process in particular.
  • the system is designed to generate a result data set for the manufactured three-dimensional object and to assign the result data set to the manufactured three-dimensional object, if the result data set comprises result data, if the result data comprise post-treatment result data and if the post-treatment device is designed to capture of post-treatment outcome data during post-treatment.
  • a result data set all relevant parameters that are measured, recorded or determined in any other way during the manufacturing process of the three-dimensional object can be collected and assigned to the manufactured three-dimensional object.
  • a quality check of the three-dimensional object can be automatically checked in a simple manner. In particular, the entire manufacturing process can be validated in this way.
  • the system is designed for the automatic unidirectional or bidirectional exchange of the result data set and / or the result data and / or the post-treatment result data between the at least two system devices.
  • the exchange of data can take place between all system devices or only a part of them.
  • system devices can always transmit data to subsequent system devices or communicate with them in order to be able to carry out subsequent process steps in a defined manner.
  • the process data record includes the result data record or if the result data record includes the process data record. This structuring of the data sets makes it possible in particular to use only a single data set, namely the process data set or the result data set, with all relevant data for the manufacturing process and to communicate between the system devices of the system.
  • a process data record identifier is assigned to the process data record.
  • the process data record identifier for assigning can be arranged or formed alternatively or additionally on the solidified three-dimensional object.
  • the three-dimensional object can be characterized in a simple manner if the process data record identifier is a code or comprises a code.
  • the code can be implemented in the form of a numeric or alphanumeric code, a barcode or a QR code. If the code is physically assigned to the three-dimensional object, data assigned to the code, for example the process data record and / or the result data record, can optionally be retrieved by querying the code
  • Order document be arranged or designed.
  • the order document can be designed, for example, in the form of a printed document or also as an order file.
  • the process data set includes solidification data that determine the solidification of the solidifiable material to form the three-dimensional len object.
  • the consolidation data can include exposure masks for individual layers of the three-dimensional object.
  • the system is preferably designed to control the solidification device on the basis of the solidification data. This enables, in particular, an automatic formation of the three-dimensional object.
  • the system is designed to control the aftertreatment device on the basis of the aftertreatment data.
  • This design allows in particular an automatic post-treatment of the three-dimensional object without an operator having to intervene manually. Errors in the configuration of the aftertreatment device can thus be avoided in a simple manner.
  • the solidification data include the process data record identifier, at least one digital irradiation mask, an irradiation time, an irradiation wavelength, an irradiation intensity, an irradiation temperature, post-exposure data for post-exposure of the solidified three-dimensional object and / or a type of solidifiable material.
  • the consolidation device can be controlled in a way so that the three-dimensional object can be formed in the desired manner.
  • the post-treatment data include cleaning data for cleaning the solidified three-dimensional object and / or post-exposure data for post-exposure of the solidified three-dimensional object.
  • the cleaning data and the post-exposure data can be used to automatically control cleaning steps and / or post-exposure steps in the manufacture of the three-dimensional object, in particular by transferring them to the respective post-treatment device from a system device upstream of the respective post-treatment step.
  • the data can in particular also be transmitted from a central data processing device.
  • the travel cleaning data define a cleaning process and / or are used to control the same, post-exposure data in particular to control a post-exposure device.
  • the cleaning data include the process data record identifier, a type of solidifiable material, a cleaning medium, a cleaning time, a cleaning intensity, a cleaning temperature, a drying time and / or a drying temperature.
  • the cleaning data can also include other characteristic data. This also applies to all of the data records and data subsets described above.
  • the post-exposure data include the process data set identifier, a type of solidifiable material, a post-exposure wavelength, a post-exposure time, a post-exposure temperature and / or a post-exposure intensity. With this data in particular, optimal post-exposure of the solidified three-dimensional object can be achieved.
  • the system comprises at least two post-treatment devices for performing at least one post-treatment of the solidified three-dimensional object with at least one of the at least two post-treatment devices.
  • the post-treatment devices can be at least one cleaning device and / or at least one post-exposure device.
  • the system can also include three, four or more aftertreatment devices, for example also the same type of aftertreatment. In particular, these can be optimized for different solidifiable materials.
  • the at least two post-treatment devices can therefore be used in particular alternatively or cumulatively for post-treatment of an object.
  • two or more post-treatment conditions can also be carried out with the same post-treatment device.
  • the system includes at least one system device in the form of a data processing device, which is assigned in particular to the consolidation device and / or the at least one after-treatment device, for generating and / or changing the after-treatment data based on or as a function of the consolidation data.
  • a data processing device process data from subsequent process steps can, in particular, be changed during the manufacturing process, if necessary, in particular as a function of specific manufacturing conditions. In this way, the quality of the three-dimensional objects can be improved.
  • the system comprises at least one consolidation data acquisition device for acquiring actual consolidation data during consolidation with the consolidation device and that the system is designed to assign the actual consolidation data to the result data.
  • the solidification device can comprise the at least one solidification data acquisition device.
  • the actual hardening data can be used in particular for a validation of the manufacturing process and for determining a quality of both the manufacturing process and the three-dimensional object.
  • the system comprises at least one post-treatment data acquisition device for acquiring actual post-treatment data during post-treatment with the at least one post-treatment device and if the system is designed to assign the actual post-treatment data to the result data.
  • the production process can be validated taking into account the actual post-treatment data.
  • the system preferably comprises a system device in the form of a data processing device for managing the process data set and / or the result data set.
  • a data processing device for managing the process data set and / or the result data set.
  • This can in particular be a central one Act data processing device.
  • This can be arranged or formed, for example, independently of the consolidation device or an aftertreatment device.
  • all data of the system can be stored and processed centrally in the data processing device, for example a memory of the same, for example to calculate an evaluation variable that can be used as a measure of the quality of the three-dimensional object produced.
  • the system comprises an evaluation variable determining device for determining an evaluation variable, which corresponds in particular to a quality of the three-dimensional object, by comparing the actual hardening data with the hardening data and / or the actual post-treatment data with the post-treatment data.
  • the data processing device in particular the central data processing device, can include the evaluation variable determining device. This can calculate the assessment variable based on the available process data and result data.
  • the system comprises at least one system device in the form of an output device for outputting the evaluation variable and / or if the system is designed to assign the evaluation variable to the process data record and / or to the result data record.
  • the output device makes it possible in particular to display the assessment variable to an operator. An assignment of the assessment variable to the process data set and / or to the result data set enables the manufacturing process to be validated. All relevant manufacturing data can thus be assigned to the respective three-dimensional object and, if necessary, queried and output.
  • the system is preferably designed to generate the consolidation data on the basis of 3D data of the three-dimensional object to be produced. For the production of the same, only 3D data have to be provided. Furthermore, it is advantageous if the system comprises a system device in the form of a 3D scanning device and if the system is designed to generate the 3D data with the 3D scanning device or on the basis of construction data.
  • the design data can, for example, be transmitted directly or indirectly to the fastening device from a data processing device, in particular a CAD system. Furthermore, the 3D data that are recorded with the 3D scanning device can also be transmitted directly or indirectly to the fastening device.
  • the system comprises at least one input device for inputting data of the process data set.
  • the input device can be designed to input a type of the solidifiable material.
  • an operator can input the type of solidifiable material, in particular before starting a manufacturing process, also referred to as a print job, as indicated above.
  • the input device can in particular be designed in such a way that a user is given various possible solidifiable materials for selection, from which the user then selects a material.
  • FIG. 1 a schematic representation of a system for producing a three-dimensional object
  • FIG. 2 a schematic representation of a further exemplary embodiment of a system for producing a three-dimensional object
  • FIG. 3 a schematic representation of a further exemplary embodiment of a system for producing a three-dimensional object
  • FIG. 4 a schematic representation of a further exemplary embodiment of a system for producing a three-dimensional object
  • FIG. 5 a schematic representation of a sequence of a manufacturing process for manufacturing a three-dimensional object
  • FIG. 6 a schematic representation of the acquisition of result data in a method for producing a three-dimensional object
  • FIG. 7 a schematic representation of a system for producing a three-dimensional object with the identified process step "3D data creation";
  • FIG. 8 a schematic representation of a system for producing a three-dimensional object with the identified process step "print data creation";
  • FIG. 9 a schematic representation of a system for producing a three-dimensional object with the “printing” process step identified
  • FIG. 10 a schematic representation of a system for producing a three-dimensional object with the identified process step “Post-treatment 1”;
  • FIG. 11 a schematic representation of a variant of the data transfer of a system
  • FIG. 12 a schematic representation of an alternative to the data transfer of a system
  • FIG. 13 a schematic representation of a process data record
  • FIG. 14 a schematic representation of a result data record.
  • FIG. 10 One embodiment of a system 10 for producing a three-dimensional object 40 by solidifying a material solidifiable by radiation is shown schematically in FIG.
  • the system 10 includes two system devices 12a and 12b.
  • the system device 12a is designed in the form of a consolidation device 14.
  • the system device 12b is formed in the form of an aftertreatment device 16.
  • the solidification device 14 is designed to solidify, in particular in layers or continuously, the material solidifiable by radiation.
  • the system device 12b is designed in the form of an aftertreatment device 16 for aftertreating the three-dimensional object 40 after solidification.
  • the two system devices 12a and 12b are designed such that they can exchange data directly.
  • a signal-effective connection 18 is used for this. This is in the exemplary embodiment shown in FIG Designed to be contactless and includes a radio communication link.
  • a wired connection for example in the form of a data network, can be provided in order to connect the two system devices 12a and 12b to one another in a signal-effective manner in order to enable data exchange between the two system devices 12a, 12b.
  • FIG. 10 Another exemplary embodiment of a system 10 for producing a three-dimensional object 40 by solidifying a material that can be solidified by radiation is shown schematically in FIG. It comprises a total of three system devices 12a, 12b and 12c,
  • the system device 12c which has been added to the exemplary embodiment of the system 10 from FIG. 1, is designed in the form of a data processing device 20. This is in signal-effective connection via further signal-effective connections 18 both with the consolidation device 14 and with the post-treatment device 16, so that data can be exchanged not only between the consolidation device 14 and the post-treatment device 16, but also between the data processing device 20 each with the consolidation device 14 and the aftertreatment device 16.
  • the system device 12a is thus indirectly connected to the system device 12b in a signal-effective manner via the system device 12c.
  • FIG. 10 Another embodiment of a system 10 for producing a three-dimensional object 40 by solidifying a material solidifiable by radiation is shown schematically in FIG. It is based on the exemplary embodiment of the system 10 shown in FIG. 2 and additionally includes a system device 12d.
  • the system device 12b forms a first aftertreatment device 16a.
  • the system device 12d forms a second aftertreatment device 16b.
  • the first aftertreatment device 16a is in the form of a cleaning device 22 for cleaning the three-dimensional object solidified with the solidification device 14. In particular, non-solidified solidifiable material is removed from the attached three-dimensional object 40 with the cleaning device 22.
  • the post-treatment device 16b is designed in the form of a post-exposure device 24 for post-exposure of the solidified three-dimensional object 40.
  • the post-exposure device 24 With the post-exposure device 24, the solidified three-dimensional objects 40, which were not fully hardened during solidification with the solidification device 14, can be completely hardened.
  • the system devices 12a, 12b, 12c and 12d are connected to one another via signal-effective connections 18, so that data can be exchanged between them. Both a direct data exchange between the system devices 12a, 12b, 12c and 12d as well as an indirect data exchange are possible.
  • the described exemplary embodiments of systems 10 thus include networked system devices 12 which, in particular, enable data transmission and data exchange between the system devices 12 that are used in the manufacturing process of the three-dimensional object.
  • networked system devices 12 which, in particular, enable data transmission and data exchange between the system devices 12 that are used in the manufacturing process of the three-dimensional object.
  • This makes it possible that an operator for a once established manufacturing process for a specific three-dimensional object 40 only has to or can enter a few data at the beginning of the process, which is also referred to as a print job or simply a “job”.
  • this can be the type of solidifiable material.
  • Further process steps in particular depend on the selected solidifiable material, for example solidification and post-treatment.
  • the process parameters or process data required in each case are then automatically exchanged between the system devices 12, so that incorrect operation of the system 10 and associated errors in the manufacture of the three-dimensional object 40 can be avoided.
  • the exemplary embodiments of systems 10 shown schematically in FIGS. 1 to 3 are of course not limiting.
  • the systems 10 can in principle also include further system devices 12.
  • a system 10 can include several consolidation devices 14 and also more than two aftertreatment devices 16.
  • FIG. 10 Another exemplary embodiment of a system 10 is shown by way of example in FIG. It again comprises two system devices 12a and 12b.
  • Each of the two system devices 12a and 12b comprises a data processing device 26a and 26b, which are used in particular to control the respective system devices 12a and 12b.
  • the system devices 12 are each independently functional and arranged or designed spatially separated from one another. They can thus be used as part of the system 10 or only used on their own.
  • a signal-effective connection 18 is established between the two system devices 12a and 12b. These can then exchange data, for example data that have been provided or processed or stored with their respective data processing devices 26a and 26b.
  • Each of the two system devices 12a and 12b comprises an output device 28a and 28b, respectively, which can be designed, for example, in the form of displays. If they are designed as touch-sensitive screens, they can also be used as input devices. Alternatively, the system devices 12a and 12b can also comprise independent input devices which enable a user to enter or select data when data for selection are displayed, for example, on one of the output devices 28a or 28b.
  • system device 12a is designed in the form of a solidification device 14, it is provided in one embodiment that the system device 12a comprises a solidification data acquisition device 30.
  • system device 12b is designed in the form of an aftertreatment device 16
  • one embodiment of the system 10 provides for the system device 12b to include an aftertreatment data acquisition device 32.
  • actual consolidation data can be acquired or measured during the consolidation of the three-dimensional object 40 with the consolidation device 14. In this way, for example, result data for the solidification process can be determined.
  • the aftertreatment data acquisition device is designed in particular to acquire or measure actual aftertreatment data during aftertreatment of the already solidified three-dimensional object 40 with aftertreatment device 16.
  • the actual aftertreatment data also form result data that can be used to validate the manufacturing process.
  • FIG. 4 Another exemplary embodiment of a system 10 is shown schematically in FIG.
  • system devices 12 of the system are shown schematically.
  • the system device 12a is designed in the form of a consolidation device 14.
  • the system device 12b is designed in the form of an aftertreatment device 16a, which is designed in the form of a cleaning device 22.
  • the system device 12d is designed in the form of a further post-treatment device 16b, specifically in the form of a post-exposure device 24.
  • the system 10 further comprises a system device 12c in the form of a data processing device 20 which is designed as a computer.
  • the system 10 further includes three other system devices 12e, 12f and 12g.
  • the system device 12e is designed in the form of an intraoral scanner 34, the system device 12f in the form of a 3D component scanner 36.
  • the system 10 further comprises the system device 12g in the form of a print data generation device 38.
  • Line A of FIG. 5 shows the individual process steps for producing a three-dimensional object 40.
  • 3D data are generated or provided.
  • the 3D data can be generated with the system devices 12e or 12f. In this way, scanned 3D data can be provided.
  • 3D data can also be provided in the form of CAD data.
  • CAD data can in particular be generated from construction data for the three-dimensional object 40.
  • print data are generated based on the 3D data. This is done with the print data generation device 38.
  • the print data generation device 38 in particular, exposure masks are generated for the solidification device 14 in order to expose the solidifiable material in a defined manner in order to achieve a layered or continuous solidification of the same to form the three-dimensional object 40.
  • the actual consolidation also referred to as 3D printing, forms the next process step that is carried out with the consolidation device 14.
  • FIG. 5 a cleaning with the cleaning device 22 is shown schematically.
  • the solidified object 40 is cleaned in a cleaning medium 42.
  • a final, second post-treatment step is carried out in the form of post-exposure with post-exposure device 24.
  • Lines C and D in FIG. 5 schematically show the data which are transmitted and output. Furthermore, in line B those data are shown schematically that are entered into the system or automatically selected or generated by the system.
  • the 3D data or CAD data are transmitted to the printing data generation device 38.
  • an operator can then select the material from which the three-dimensional object 40 to be formed can be selected. If necessary, further print parameters can also be entered.
  • process data record 44 This can be transmitted in whole or in part to the system device 12 provided for the next process step.
  • Further information or data can be added to the process data set 44 by the consolidation device 14.
  • process steps to which the object 40 has already been subjected or not yet can be documented and included in the process data record 44.
  • the information can then be assigned to the object 40 that it has now been cleaned, but has not yet been re-exposed.
  • This information can then be output in particular to the cleaning device 22 on its output device 28.
  • the object 40 can now be removed from the cleaning device 22, for example by an operator, and inserted into the post-exposure device 24.
  • exposure parameters such as wavelength, exposure duration, exposure intensity for the post-exposure on the post-exposure device 24.
  • These data are either already contained in the process data set 44 and are transferred from the cleaning device 22 to the post-exposure device 24 when it is transferred, or there is communication between the solidification device 14 and the post-exposure device 24.
  • the post-exposure device 24 can independently, that is to say automatically, select the process parameters from the provided print data that have been assigned to the object 40.
  • the object 40 can be assigned the information that it has been cleaned and post-exposed. In particular, this can be validation information from the manufacturing process.
  • the process data set 44 can be exchanged via the connections 18 with all system devices 12 of the system 10.
  • FIG. 6 schematically shows an exemplary sequence for data acquisition when producing a three-dimensional object 40.
  • Line A of FIG. 6 shows the process steps
  • line B the relevant process data
  • line C shows the type of process data acquisition.
  • FIG. 6 takes into account, as process steps, solidification, that is to say the actual 3D printing, as well as two post-treatments, namely a cleaning step and a post-exposure step.
  • Relevant process data for the cleaning step are, in particular, a cleaning duration and the cleaning medium used.
  • the process data exposure intensity, exposure duration and wavelength are particularly relevant for a post-exposure step.
  • the process data acquisition can take place locally or centrally in all three steps.
  • the system devices 12 can comprise data processing devices 26 which enable process data to be recorded and processed.
  • Figures 7 to 10 show schematically on the basis of further exemplary embodiments of systems 10 the sequence of the production of the object 40.
  • job For each print job, referred to as "job" in the figures, the above-mentioned go through the written process steps, namely 3D data creation, printing data creation, printing or solidifying as well as one or more post-treatment steps.
  • the process data record is adapted or changed as required depending on each process step so that the subsequent process steps can run in an optimal manner for the respective three-dimensional object 40.
  • Data acquisition can also take place at every step of the manufacturing process. This is also illustrated by way of example with the schematically drawn in process data set 44, to which any recorded data can be added in each process step.
  • FIG. 11 shows an example of the forwarding of information or data in the system 10.
  • data or information is successively, that is to say sequentially, transmitted or passed on from process step to process step.
  • data can also be passed on or information exchange, as shown schematically in FIG. 12, so that relevant process data are not transmitted directly to subsequent system devices, but only to those who actually need this information to carry out certain process steps.
  • a process data record 44 is shown schematically in FIG. This can in particular include process data 46. With the process data 46 it can are in particular post-treatment data 48 which define the post-treatment with the post-treatment device 16a and / or 16b.
  • the post-treatment data 48 can in particular include cleaning data 52 and post-exposure data 54.
  • the process data record 44 is assigned a process data record identifier 56 in the form of a code 58.
  • the process data set 44 can in particular include consolidation data 60 which are used to control the consolidation device 14.
  • the aftertreatment data 48 serve in particular to control the aftertreatment devices 16a and 16b.
  • a result data record 62 is also generated for the three-dimensional object 40 and assigned to it.
  • An exemplary embodiment for such a result data record 62 is shown schematically in FIG.
  • the result data record 62 comprises result data 64 which comprise information about the three-dimensional object 40 produced.
  • the result data 64 include post-treatment result data 66 which are recorded during the post-treatment with the post-treatment devices 16a and 16b. This can in particular be information as to whether the object 40 has already been cleaned or not or whether the object has already been post-exposed or not.
  • the process data record 44 includes the result data record 62.
  • the result data set 62 includes the process data set 44.
  • the result data 64 include actual consolidation data 68 that are recorded during consolidation with the consolidation device 14.
  • the aftertreatment results data 66 include actual aftertreatment data 70 that are recorded during aftertreatment with the aftertreatment device 16a or 16b.
  • the system 10 is designed to assign an assessment variable based on the result data 64, in particular by comparing the actual hardening data 68 with the hardening data 60 and / or the actual post-treatment data 70 with the post-treatment data 48 determine which, for example, corresponds to a quality of the three-dimensional object.
  • This assessment variable can then be based on an or a plurality of output devices 28 of the system 10 are displayed to a user.
  • the evaluation variable is assigned to the process data record 44 and / or the result data record 62.
  • the systems 10 allow a high degree of flexibility.
  • they can be formed from any system devices 12 if they are suitable for communicating with one another and exchanging data, for example via wired or contactless signal-effective connections such as radio links.

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Abstract

La présente invention a pour objet d'améliorer un procédé de fabrication d'un objet tridimensionnel par durcissement d'un matériau durcissable par rayonnement avec un système comportant au moins deux dispositifs de système, au moins un dispositif de système étant conçu sous forme d'un dispositif de durcissement pour durcir, de préférence couche par couche ou de manière continue, le matériau durcissable par rayonnement, au moins un dispositif de système étant conçu sous forme d'un dispositif de post-traitement et, selon ledit procédé, l'objet tridimensionnel étant durci avec le dispositif de durcissement et étant traité, après le durcissement, avec le dispositif de post-traitement, de sorte que des objets tridimensionnels peuvent être fabriqués de manière fiable par durcissement d'un matériau durcissable par rayonnement. À cet effet, les deux dispositifs de système ou plus présentent une liaison de signaux active directe ou indirecte entre eux pour échanger des données. La présente invention concerne en outre un système amélioré pour la fabrication d'un objet tridimensionnel par durcissement d'un matériau durcissable par rayonnement.
EP20710882.0A 2019-03-07 2020-03-09 Procédé et système de fabrication d'un objet tridimensionnel Pending EP3935455A1 (fr)

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DE102019105811 2019-03-07
PCT/EP2020/056143 WO2020178453A1 (fr) 2019-03-07 2020-03-09 Procédé et système de fabrication d'un objet tridimensionnel

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US10589466B2 (en) * 2015-02-28 2020-03-17 Xerox Corporation Systems and methods for implementing multi-layer addressable curing of ultraviolet (UV) light curable inks for three dimensional (3D) printed parts and components
DE102016114848A1 (de) * 2015-08-25 2017-03-02 Cl Schutzrechtsverwaltungs Gmbh Verfahren zur generativen Herstellung eines dreidimensionalen Objekts
CN109070452B (zh) * 2016-05-12 2021-06-22 惠普发展公司，有限责任合伙企业 增材制造系统和用于后处理的方法
EP3459029A1 (fr) * 2016-05-20 2019-03-27 Moog Inc. Pièces manufacturées sécurisées et traçables
KR20180124137A (ko) * 2016-06-28 2018-11-20 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. 3d 프린팅 관리
WO2018091091A1 (fr) * 2016-11-17 2018-05-24 Innogy Innovation Gmbh Procédé de fonctionnement d'au moins un appareil de fabrication additive
WO2019005708A2 (fr) * 2017-06-25 2019-01-03 Strong Force Intellectual Capital, Llc Procédés et systèmes pour permettre et planifier une fabrication basée sur une impression 3d

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