WO2019125407A1 - Étalonnage d'une imprimante 3d - Google Patents

Étalonnage d'une imprimante 3d Download PDF

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Publication number
WO2019125407A1
WO2019125407A1 PCT/US2017/067248 US2017067248W WO2019125407A1 WO 2019125407 A1 WO2019125407 A1 WO 2019125407A1 US 2017067248 W US2017067248 W US 2017067248W WO 2019125407 A1 WO2019125407 A1 WO 2019125407A1
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WO
WIPO (PCT)
Prior art keywords
printer
additional object
build material
identification pattern
representing
Prior art date
Application number
PCT/US2017/067248
Other languages
English (en)
Inventor
Luis Garcia Garcia
Pablo DOMINGUEZ PASTOR
Emilio LOPEZ MATOS
Original Assignee
Hewlett-Packard Development Company, L.P.
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 Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2017/067248 priority Critical patent/WO2019125407A1/fr
Publication of WO2019125407A1 publication Critical patent/WO2019125407A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—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
    • 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

Definitions

  • [001] 3D printers are additive manufacturing systems to generate three-dimen- siona! objects in a iayer-wise manner.
  • layers of build material are successively formed and portions of each layer may be selectively solidified to form each layer of an object.
  • Figure 1 schematically shows an example of a device comprising a selec- tive solidification module, a controller and a calibration module.
  • Figure 2 schematically shows an example of a 3D printer having a control ler comprising instructions to operate the 3D printer.
  • Figure 3 shows a flow diagram of an example of a method of operating a 3D printer.
  • Figure 4 shows a flow diagram of an example of a method of operating a 3D printer.
  • Figure 5 shows a flow diagram of an example of a method of operating a 3D printer.
  • Figure 6a-6f schematically show examples of generating a three-dimen sional object.
  • Figure 7a and 7b schematically show examples of generating a three-di- mensional object.
  • 3D printers generate three-dimensional objects from build material in a layer-wise manner.
  • Build material may be powder based, particulate or grained material and may encompass dry and wet build material.
  • Build material may com prise at least one of plastic, polymers, acrylics, polyesters, silicones, polyamides, nylon, organic material, metals or ceramics in some examples, particles forming the build material may have different sizes or shapes and in some examples build material may comprise different materials, binders, additives or fillers.
  • Particles constituting build material may be spherical, fiber-shaped, elongated, flat, cylin drical, polyhedron-shaped or flaked.
  • Build material may have a melting tempera ture, a crystallization temperature and/or a glass transition temperature.
  • a 3D printer forms consecutive layers of build material and selectively solidifies portions per build material layer, so that layer-by-layer solidified portions of build material form a three-dimensional object.
  • Solidification of build material may be based, for example, on melting, binding, sintering, fusing, gluing, laminating, curing or coalescing in some examples, an agent is deposited onto a section of a build material layer and by applying energy to the build material layer and agent the section solidifies in some examples, an agent is fusing, or coalescing agent.
  • An agent may be a liquid and may comprise at least one of water, glycol, dyes, pigments, binders and further ingredients.
  • a set of three-dimensional objects to be generated in a build job by a 3D printer may be represented by data.
  • data representing the three- dimensional objects may be in the form of a slice representations of the set of objects, a voxel representation, an octree representation or may be data based on a set of CAD models in an example
  • a virtual build volume contains a set of three-dimensional objects with their positions and orientations within the virtual build volume.
  • the virtual build volume may be mapped to a physical build cham ber of a 3D printer, defining a build job, so that the set of three-dimensional ob- jects can be generated from build material layers within the build chamber.
  • a 3D printer comprises various elements and performs various functions.
  • a 3D printer may comprise a build material distributor to form a layer of build material.
  • a build material distributor may spread, or otherwise form, a layer of build material of a particular thickness onto a build plat- form or onto a previously formed build material layer, so that layers of build ma terial can be formed in a build chamber of the 3D printer.
  • a build material distrib utor may be, for example, a roller, a blade, a vane, an aperture or a series of nozzles and build material may be supplied to the build material distributor.
  • a 3D printer may include a movable build platform on which build material is distributed. A movable platform may move down relative to the build material distributor be fore or after distributing a next build material layer
  • a 3D printer includes elements to selectively solidify portions or sections of a build material layer. Sections may be locations of the build material layer defined by a slice representation of a set of three-dimensional objects to be built, e.g. cross-sections.
  • a 3D printer comprises at least one agent distributor to distribute agent onto a build material layer. Agent may be distributed onto the portions, e.g. cross-sections, which are to be solidi fied.
  • an agent distributor may be a series of nozzles or drop ejec tors, such as a printhead, to selectively deposit agent onto a build material layer
  • a fusing agent also known as a coalescing agent, is deposited onto sections of the build material layer.
  • fusing agent may be, or may be based on, black ink, for example comprising carbon black, and may be deposited by nozzles of an inkjet type printhead.
  • other energy absorbing fusing agents may be used.
  • a detailing agent also known as a coalescing modifier agent, may modify properties of the build material, e.g. absorbance of radiation, heat transfer, heat capacity, etc., and may be distributed on sections of a build material layer to decrease or modify heating or solidification of build material at these sections.
  • a 3D printer comprises an energy source.
  • An energy source may emit electromagnetic radiation, heat or electrons.
  • an energy source can be a laser system, a ultra-violet source, an infra-red source, a visible light source, a halogen source, an electron beam source, or a heat source in some examples, an energy source may apply energy uniformly, or substantially uniformly, to the build material layer and in some examples an energy source may apply selectively energy to portions of a build material layer.
  • elements of a 3D printer may be calibrated.
  • elements of a 3D printer may be calibrated based on properties of at least one of build material, an energy source, a build material distributor, an agent dis tributor, printing agent or another element of the 3D printer.
  • a 3D printer may be calibrated based on firing data of print heads, spatial position of elements or other relationships between elements of a 3D printer.
  • a calibration improves a quality of a set of three-dimensional objects that may be built by the 3D printer. For example, calibration based on a melting temperature, a glass transition temperature or crystallization temperature of build material may enable a more accurate temperature control of the build job and may improve solidification characteristics of the set of three-dimensional objects to be built.
  • generated three-dimensional objects may be post-pro- Defined by a 3D printer, by a post-processing device or by a user.
  • unsolidified build material may be removed from the built objects, e.g. by sand- blasting, by blowing of air or gas, by vibrating, by brushing, etc.
  • built objects may be packed, e.g. for shipment, or may be painted or colored in some examples, a set of three-dimensional objects generated is tracked during post-processing.
  • a convenient solution to calibrate a 3D printer and add an identifier to a set of three-dimensional objects is desired.
  • the examples described herein are re- lated to a method of operating a 3D printer, co puter-readable instructions and a device.
  • an object comprising an identification pattern and a calibration part is generated and which is subsequently used, during a print job, to calibrate an element or elements of a 3D printer.
  • Generating an object com prising two portions, a first portion having an identification pattern and a second portion representing a calibration part may reduce the time for additiveiy manu facturing the object and the set of three-dimensional objects.
  • Some examples of the method of operating a 3D printer described herein may reduce the amount of build material to be solidified and may reduce the amount of agent or energy consumed. Some examples described herein, may reduce the amount of waste products as the object comprising an identification pattern and a calibration part may be re-used after calibration to track or identify a set of three-dimensional objects.
  • FIG. 1 schematically shows an example of a device (010), e.g. a 3D printer, comprising a selective solidification module (01 1 ) to generate a set of three-dimensional objects, a controller (012) to control the selective solidification module (01 1 ) to generate an additional object and a calibration module (013) to perform a calibration test based on the additional object.
  • the additional object to be generated comprises at least two portions, a first portion having an identifica tion pattern relating to the set of three-dimensional objects and a second portion representing a calibration part.
  • the calibration test is to be performed based on generation of the additional object and the calibration module (013) is to calibrate a parameter of a 3D printer based on the calibration part of the additional object.
  • a selective solidification module (01 1 ) provides a build chamber in which a set of three-dimensional objects may be generated in a layer-wise manner, e.g. by selectively solidifying cross-sections of build material layers.
  • the selective solidification module (011 ) may be part of a 3D printer, such as 3D printer (020) schematically shown in Figure 2, comprising a build platform (025), a build chamber (026), a build material distributor (027), an agent distributor (028) and an energy source (029).
  • the set of three-dimensional ob jects to be generated by the selective solidification module (01 1 ) is defined in a build job.
  • the build job may, directly or indirectly, define a number of build material layers to be formed within a build chamber (026) and selectively solidified with a selective solidification module (01 1 ).
  • the additional object used for calibration with calibration module (013), comprises two portions, the first portion having an identification pattern and the second portion representing a calibration part.
  • the controller (012), such as con- tro!!er (021 ) shown in Figure 2 is to control the generation of the first and second portion which are to be generated by selective solidification module (01 1 ) in a layer-wise manner.
  • the additional object may be generated in the same build job as the set of three-dimensional objects.
  • the identification pattern of the additional object relates to the set of three- dimensional objects, wherein the identification pattern relates to any information concerning the set of three-dimensional objects to be generated by the selective solidification module (01 1 ).
  • the identification pattern may relate to the shape, size, color or other information or properties of the set of three-dimensional ob jects.
  • the identification pattern may relate to information about the build job of the set of three-dimensional objects, e.g. a build job identifier, a timestamp of the build job, user information or other parameters of the build job.
  • the identification pattern may relate to information about a selective solidification module (01 1 ) with which the set of three-dimensional objects is to be generated or to a 3D printer (020) as shown in Figure 2, e.g.
  • the identification pattern may be a pattern on a surface of the first portion of the additional object.
  • the identification pattern may be a colored pattern on a surface, the identification pattern may be generated by using different build material or agent, or the identification pattern may be represented by a dif ferent depth at a surface of the first portion of the additional object, so that the identification pattern extends inward or outward from a surface of the first portion of the additional object in some examples, the identification pattern is repre- sented by cross-sections of the first portion of the additional object.
  • a calibration module (013) is to perform a calibration test and calibrate an element or a parameter of a 3D printer.
  • a calibration module (013) may be part of a 3D printer, such as 3D printer (020) schematically shown in Figure 2, and may calibrate an element of the 3D printer (020).
  • a calibration test is to be performed based on the second portion of the additional object represent ing a calibration part.
  • a calibration part may relate to a form, size, shape, build material properties, agent properties or other properties to be tested and based on which a parameter or element of a 3D printer can be calibrated.
  • the second portion of the additional object may corn- prise a series of visual marks, e.g. colored marks or marks extending inward or outward of a surface of the second portion in some examples, the second portion of the additional object represents a calibration part based on a property of build material or agent in some examples, the calibration part may be represented in at least one cross-section of the second portion of the additional object.
  • a calibration module (013) comprises a measurement instrument, such as measurement instrument (0210) shown in Figure 2.
  • a thermal sensor, a thermal camera, a camera, a height profile sensor, a detector or a light sensor is used to perform a calibration test during or after gen eration of the additional object based on the calibration part.
  • a controller (021 ) is to control a measurement instrument (0210), so that a cali bration test is performed and is to process signals relating to the calibration test.
  • a calibration module (013) measures a characteristic of a sample of build materia!
  • a temperature point is calibrated, e.g. a melting temperature, a glass transition temperature or a crystallization temperature of a sample of build material used for the generation of the calibration part of the additional object.
  • device (010) comprises a temperature controller to con trol an energy source to apply energy to build material distributed by a build ma terial distributor onto a build platform, based on the calibrated parameter, such as a calibrated temperature point.
  • An energy source such as an energy source (029) schematically shown in Figure 2, may be to selectively introduce energy to build material layers or to uniformly apply energy to build material layers and agent, so that cross-sections of build material layers are solidified.
  • an energy source (029) is to heat, e.g. to pre-heat, melt or cure, build material layers.
  • the temperature controller may control an energy source so that a temperature of a build material layer is achieved in relation to the calibrated temperature point.
  • a 3D printer (020) comprises elements to generate a set of three-dimensional objects, and to perform a calibration test and to calibrate the 3D printer (020) based on an additional object.
  • the 3D printer (020) shown in Figure 2 comprises a build platform (025) on which layers of build material are to be distributed, a build chamber (026) defining space above a build platform (025) in which a set of three-dimensional object can be generated and which may be removable or a fixed part of the 3D printer (020), a build material distributor (027) to form build material layers, an agent distributor (028) to deposit agent onto sections of a build material layer and an energy source (029) to apply energy to the build material layer and agent so that the sections of build material on which fusing agent is applied solidify.
  • the 3D printer is to generate an additional object comprising at least two portions, a first portion having an identification pattern and a second portion representing a cali bration part, wherein the identification pattern relates to
  • the 3D printer (020) shown in Figure 2 comprises a measurement instru ment (0210) to perform a calibration test based on the second portion of an addi- tional object representing a calibration part, e.g. by an optical sensing device, by a temperature sensor, by a thermal sensor, by visual inspection, by a contact sensor, by a pressure sensor, by a spectrometer, etc. in some examples, the calibration may be based on a sample of build material used for the generation of the second portion of the additional object.
  • a property of the build material may be measured during the generation or after the generation of the second portion of the additional object in some examples, fusing or melting char acteristics, a height profile, a color, a density or a surface property of build mate rial in relation to the calibration part is measured.
  • Calibrating an element of the 3D printer (020) may comprises, receiving a signal from the measurement instrument (0210) relating to a property of the sec ond portion of the additional object representing the calibration part.
  • measurement data or a signal is analyzed and a parameter to be cali brated may be determined, e.g. by a controller (021 ).
  • the 3D printer (020) may be controlled to use the calibrated parameter or to control an element of the 3D printer (020) based on the calibration data.
  • An example of a 3D printer (020), shown in Figure 2, has a controller (021 ) comprising a processing system (022), e.g. CPU or GPU, and a computer read able storage medium (023) comprising instructions (024) to control operation of the 3D printer (020)
  • the computer readable storage medium (023) may comprise volatile, e.g. RAM, and nonvolatile components, e.g. ROM, hard disk, CD-ROM, flash memory, etc.
  • the instructions (024) comprise instructions executable by the processing system (022) and the instructions (024) may implement a method to operate a 3D printer.
  • the instructions (024) to operate a 3D printer comprise instructions to receive data representing a set of three-dimensional ob jects to be generated, instructions to create data representing an additional object comprising a first portion having an identification pattern and a second portion representing a calibration part, instructions to control a 3D printer using the cre- ated data to generate the additional object, instructions to calibrate an element of the 3D printer based on the generation of the second portion of the additional object and instructions to control the 3D printer to generate the set of three-di- mensional objects.
  • instructions to create data representing the additional object may be in structions to create data representing the additional object based on data repre- senting two objects, an object having an identification pattern and another object representing a calibration part.
  • data representing the addi tional object may be created from two-dimensional representations, e.g. of an identification pattern and a calibration pattern in some examples, a slice repre sentation may be created representing the additional object, e.g. based on cross- sections representing the identification pattern and the calibration part.
  • data representing the additional object is based on CAD data or an- other format to represent a three-dimensional object to be generated by a 3D printer (020), e.g. a format specifying a build material distribution.
  • an identification pattern is created based on information relating to the set of three-dimensional object to be generated, e.g. based on information about the build job or the 3D printer (020).
  • the identification pattern com prises at least one of letters, numbers, signs or symbols and may be machine readable.
  • the controller (021 ) may comprise circuitry to control a 3D printer (020).
  • the controller (021 ) may comprise circuitry so that elements of a 3D printer (020) can be controlled, e.g. a build material distributor (027), an agent distributor (028), an energy source (029), a build platform (025), a measurement instrument (0210), etc.
  • the controller (021 ) may be comprised in a distributed network system or may be a microcontroller.
  • the instructions (024) may be provided by way of a firmware update and the storage medium (023) may be a CD-ROM, a flash drive or a storage on a remote storage medium.
  • the in structions (024) on the CD-ROM, flash drive or remote storage medium may be executable by the processing system (022) to control the 3D printer (020).
  • Figure 3 shows a flow diagram of an example of a method of operating a 3D printer.
  • the method may be implemented as instructions (024) comprised in a computer readable storage medium to be executed by a processing system, such as the processing system (022) and computer-readable storage medium (023) in Figure 2.
  • the method of Figure 3 comprises obtaining data representing a set of three-dimensional objects (031 ), generating a first portion of an additional object having an identification pattern, the identification pattern relating to the set of three-dimensional objects (032), based on the generation of a second portion of the additional object representing a calibration part, calibrating a parameter of the 3D printer using the calibration part of the object (033) and generating the set of three-dimensional objects using the calibrated parameter (034)
  • a set of three-dimensional objects is a set of at least one object to be gen erated by a 3D printer, such as 3D printer (020) schematically shown in Figure 2.
  • the set may include objects to be generated in a build job by a 3D printer.
  • Data representing the set of three-dimensional objects may be based on CAD data or another format to represent the set of objects to be generated.
  • the data may be stored in a computer-readable storage medium, for example the storage medium (023) in Figure 2, and may be accessible by a processor (022). in some examples, the data may be transformed to instructions executable by the 3D printer to generate the set of three-dimensional objects.
  • An identification pattern relates to the set of three-dimensional objects, wherein the identification pattern relates to any information concerning the set of three-dimensional objects to be generated.
  • the identification pattern may relate to a build job identifier, a timestamp or a printer identifier in an exam ple, the identification pattern is created, e.g. by a controller, such as a controller (021 ) shown in Figure 2.
  • the controller may create data representing the identifi cation pattern and may create instructions to generate an object having the iden tification pattern.
  • data representing the identification pattern is ob- tained from a database.
  • information based on which the iden- tification pattern is created is dynamic information and in some examples the in formation may be determined or selected by a user.
  • the identification pattern may be represented in at least one cross-section of the first portion of the additional object.
  • the cross-sections of the first portion of the additional object are identical and in some examples, the cross-sections vary.
  • the first portion of the additional object is generated by solidifying in a first number of consecutive build material layers identical cross-sections representing the identification pattern.
  • the identical cross-sections of the first portion of the additional object have the form or outline of the identification pattern, such as an example cross- section schematically shown in Figure 7a.
  • the calibration part may be represented in at least one cross-section of the second portion of the additional object.
  • the cross-sections of the second portion of the additional object are identical and in some examples, the cross-sections vary in an example, the second portion of the additional object is generated by solidifying in a second number of consecu tive build material layers identical cross-sections representing the calibration part, such as an example cross-section schematically shown in Figure 7b.
  • a parameter or element of the 3D printer is to be calibrated using the cali bration part of the additional object.
  • a parameter of the 3D printer such as 3D printer (020) shown in Figure 2
  • a series of features or properties of the second portion representing the calibration part are measured by a measurement instrument (0210).
  • calibrating a parameter of a 3D printer comprises measur ing a temperature point based on the calibration part of the additional object. For example, a melting temperature, a crystallization temperature or a glass transition temperature of a sample of build material used for the generation of the second portion of the additional object may be measured.
  • a temperature point may be measured during generation of the calibration part by observing coalescing or fusing characteristics of cross-sections of build material layers.
  • a parameter or an element of a 3D printer is calibrated.
  • an energy source (029), a build material dis tributor (027), an agent distributor (028), agent or another element of the 3D printer (020) may be calibrated in an example, an energy source (029) of the 3D printer (020) is calibrated based on a temperature point relating to a property of build material used for the generation of the second portion of the additional ob ject representing the calibration part.
  • the set of three-dimensional object is to be generated using the calibrated parameter.
  • the set of three-dimen sional objects are generated in the same build job and in the same build chamber as the additional object.
  • an energy source (029) of the 3D printer (020) is controlled during generation of the set of three-dimensional objects using the calibrated parameter.
  • Figure 4 shows a flow diagram of an example of a method of operating a 3D printer.
  • the method may be implemented as instructions (024) comprised in a computer readable storage medium to be executed by a processing system, such as the processing system (022) and computer-readable storage medium (023) in Figure 2.
  • the method of Figure 4 comprises obtaining data representing a set of three-dimensional objects (031 ), generating a mirrored identification pat tern (041 ), solidifying in a first number of layers identical cross-sections repre senting the mirrored identification pattern to generate a first portion of an addi- fional object (042), solidifying in a second number of layers identical cross-sec tions representing a calibration part to generate a second portion of the additional object (043), based on the generation of the second portion of the additional ob- ject representing a calibration part, calibrating a parameter of a 3D printer (033) and generating the set of three-dimensional objects using the calibrated parame ter (034).
  • a mirrored identification pattern may be generated by a controller, such as a controller (021 ) shown in Figure 2.
  • a mirrored identification pattern may be gen erated, so that after generation of the additional object the identification pattern appears non-mirrored on the first portion of the additional object.
  • the first portion may be generated from a first number of build material layers below a second number of build material layers used for the generation of the second portion of the additional object in that example, the additional object may be generated upside down on a build platform, such as an example schematically shown in Figure 6a-6f.
  • the additional object may have an identification pat tern visible or readable on top of the second portion of the additional object in an example, the second portion of the additional object may be generated from a first number of build material layers and the first portion of the additional object may be generated on top from a second number of build material layers after a calibration is performed based on the second portion.
  • Figure 5 shows a flow diagram of an example of a method of operating a 3D printer.
  • the method may be implemented as instructions (024) comprised in a computer readable storage medium to be executed by a processing system, such as the processing system (022) and computer-readable storage medium (023) in Figure 2.
  • the instructions to operate a 3D printer com prise instructions to receive data representing a set of three-dimensional objects to be generated (031 ), instructions to generate a first portion of an additional ob ject having an identification pattern (032), instructions based on the generation of a second portion of the additional object representing a calibration part, to cali brate a parameter of a 3D printer (033), instructions to determine a temperature point of the 3D printer relating to a property of build material used for the genera tion of the second portion of the additional object representing the calibration part (051 ), instructions to control an energy source of the 3D printer during generation of the set of three-dimensional objects using the temperature point (052) and in structions to generate the set of three-dimensional objects (034).
  • Instructions to determine a temperature point (051 ) may comprise instruc tions to receive measurement data or a signal from a measurement instrument (0210), e.g. from a temperature sensor or a thermal camera.
  • the second portion of the additional object is generated in a build chamber, so that at least one effective pixel of measurement instrument (0210) can receive a temperature signal from build material forming the calibration part.
  • Measurement data or a signal may be analyzed, e.g. by relating data to a temperature curve or points, so that a melting temperature, a crystallization temperature or a glass transition temperature of build material used for the generation of the second por tion may be determined. Based on the calibrated temperature point an energy source of the 3D printer may be controlled.
  • energy source (029) of Figure 2 may be controlled using the calibrated temperature point.
  • An energy source may be controlled using the calibrated temperature point, so that a tem perature profile of a layer of build material relates to the calibrated temperature point during generation of the set of three-dimensional objects.
  • Figure 6a-6f schematically show examples of generating a tbree-dimen- siona! object, such as an additional object comprising at least two portions, a first portion having an identification pattern and a second portion representing a cali bration part.
  • Figure 6a-6f schematically show views along a plane perpendicular to a build platform (025) and through the three-dimensional object.
  • Figure 6a-6f show example numbers of build material layers and example forms, sections and dimensions of portions to be generated by 3D printing.
  • build materia! layers are formed by a build material distributor, e.g. build material dis tributor (027) in Figure 2 in some examples, a section of a build materia! layer is solidified by applying energy and/or agent, e.g. via an energy source (029) and/or an agent distributor (028) shown in Figure 2.
  • Figure 6a schematically shows a build platform (026) on which a three- dimensional object is to be build.
  • a build material layer (061 a) is distributed on the build platform (026) or on another build materia! layer, not shown in Figure 6a.
  • a section of the build material layer (061 a) is solidified, e.g. by applying en ergy and agent onto the section, and a solidified portion (062a) is generated.
  • Fig ure 6b schematically shows a consecutive build material layer (061 b).
  • a section of the build material layer (061 b) is solidified, wherein the section of build materia! layer (061 b) coalesces or fuses together with portion (062a), so that a solidified portion (062b) is generated.
  • Figure 6c schematically shows an example of a first portion (062c) generated from a first number of consecutive build material layers (e.g. 061 a, 061 b, 061 c) by selectively solidifying and fusing together sections of adjacent build material layers.
  • Figure 6d schematically shows a consecutive build material layer (061 d) spread on top of the build material layer (061 c) and portion (062c).
  • a section of the build material layer (061 d) is solidified, wherein the section of build material layer (061 d) coalesces or fuses together with portion (062c), so that a solidified portion (G62d) is generated.
  • Figure 8e schematically shows a consecutive build material layer (061 e).
  • a section of the build materia! layer (061 e) is solidified, wherein the section of build materia! layer (061 e) coalesces or fuses together with portion (062d), so that a solidified portion (G82e) is generated.
  • Figure 8f schemat ically shows an example of an object (062f) generated from a number of consec utive build material layers (061 a-061 f) by selectively solidifying sections of build material layers (G61 a-G61f).
  • the object (G62f) comprises at least two portions.
  • a first portion (062c), shown in Figure 6c, is generated from a first number of con secutive build materia! layers (e.g. 061 a, 061 b, 061 c) and a second portion, shown in Figure 8f as portion of the object (062f), is generated from a second number of consecutive build material layers (e.g. 061 d, G61 e, 061 f).
  • the second portion represents a calibration part of an additional object and the first portion represents an identification pattern in some examples, the first and the second portion are each generated from identical cross-sections.
  • the second portion representing a calibration part is generated from build materia! layers on top of the first portion, so that a measurement instrument can measure characteristics of the calibration part. For example, a calibration test may be performed after generation of the second por tion representing the calibration part in some examples, a calibration test is per formed after distributing a third number of build material layers on top of the sec ond portion. A fusing or melting parameter of build material may be measured and calibrated.
  • Figure 7a and 7b schematically show examples of generating a three-di mensional object, such as an additional object comprising at least two portions, a first portion having an identification pattern and a second portion representing a calibration part.
  • Figure 7a and 7b schematically show views along a plane parallel to a build platform (025) and through the three-dimensional object. Examples shown in Figure 6a-6f may be views along plane (073) perpendicular to a build platform (025).
  • Figure 7a shows a build material layer (071 a), e.g. build material layer (061 a), (061 b) or (061 c) shown in Figure 6a-6c, having a solidified cross-section (072a).
  • the solidified cross-section (072a) may be a cross-section of a first por tion of an additional object representing an identification pattern.
  • a first portion of an additional object is generated from a number of identical cross-sections (072a).
  • cross-section (072a) represents a mir rored identification pattern.
  • a solidified cross-section (072a) is generated by distributing agent in a pattern of cross-section (072a) onto the build material layer (071 a) and applying uniformly energy to the build material layer (071 a) and agent, so that cross-section (072a) solidifies.
  • a cross-section (072a) may fuse or coalesce together with solidified cross-sections in neighboring build material layers so that a portion of a three-dimensional object is generated.
  • Figure 7b shows a build material layer (071 b), e.g. build material layer (061 d), (061 e) or (061 f) shown In Figure 6d-6f, having a solidified cross-section (072b).
  • the solidified cross-section (072b) may be a cross-section of a second portion of an additional object representing a calibration part.
  • a second portion of an additional object is generated from a number of identical cross-sections (072b).
  • a solidified cross-section (072b) may be generated by dis tributing agent with an agent distributor in a pattern of cross-section (072b) onto the build material layer (071 b) and applying uniformly energy to the build material layer (071 b), so that cross-section (072b) solidifies.
  • a cross-section (072b) may fuse or coalesce together with solidified cross-sections in neighboring build ma terial layers so that a portion of a three-dimensional object is generated.
  • a calibration test is performed based on cross-section (072b).
  • a property of build material used for the generation of the solidified cross-section (072b) may be determined.
  • a melting or fusing characteristic of build material at cross-sections (072b) may be measured, e.g. with a thermal sensor or visually in some examples, a parameter or element of a 3D printer may be calibrated based on the calibration test performed on cross-section (072b).
  • a 3D printer may relate to e.g. a rapid prototyping system, a fused deposit modelling system, a selective laser sin- tering system, a stereolithography system, a selective/direct laser melting system, an electron beam melting system, a binder-jet system, an inkjet 3D printing sys tem, etc.

Abstract

Un exemple de l'invention concerne un procédé pour faire fonctionner une imprimante 3D, un ensemble d'objets tridimensionnels devant être généré en utilisant un paramètre étalonné de l'imprimante 3D. Dans cet exemple, un objet supplémentaire comprenant une première portion qui représente un motif d'identification et une deuxième portion qui représente une partie d'étalonnage est généré, et pendant la génération de la deuxième portion, le paramètre de l'imprimante 3D est étalonné en utilisant la partie d'étalonnage de l'objet supplémentaire.
PCT/US2017/067248 2017-12-19 2017-12-19 Étalonnage d'une imprimante 3d WO2019125407A1 (fr)

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WO2021080609A1 (fr) * 2019-10-25 2021-04-29 Hewlett-Packard Development Company, L.P. Étalonnage de mesure de température dans une impression 3d
US20220072649A1 (en) * 2020-09-08 2022-03-10 Arcam Ab Devices, systems, and methods for encoding and decoding data in an additive manufacturing build chamber
WO2023277863A1 (fr) * 2021-06-28 2023-01-05 Hewlett-Packard Development Company, L.P. Quantités de couverture d'agent d'impression en fabrication additive
GB2610621A (en) * 2021-09-13 2023-03-15 Stratasys Powder Production Ltd Method of operation for an apparatus for layer-by-layer manufacture of 3D objects

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WO2015108546A2 (fr) * 2014-01-16 2015-07-23 Hewlett-Packard Development Company, L.P. Génération d'objets tridimensionnels
US20160074558A1 (en) * 2010-10-21 2016-03-17 Organovo, Inc. Devices, systems, and methods for the fabrication of tissue
US20160260001A1 (en) * 2015-03-02 2016-09-08 Xerox Corporation Method and system for generating and printing three dimensional barcodes
WO2016186609A1 (fr) * 2015-05-15 2016-11-24 Hewlett-Packard Development Company, L.P. Systèmes d'impression tridimensionnelle

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US20160074558A1 (en) * 2010-10-21 2016-03-17 Organovo, Inc. Devices, systems, and methods for the fabrication of tissue
WO2015108546A2 (fr) * 2014-01-16 2015-07-23 Hewlett-Packard Development Company, L.P. Génération d'objets tridimensionnels
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WO2016186609A1 (fr) * 2015-05-15 2016-11-24 Hewlett-Packard Development Company, L.P. Systèmes d'impression tridimensionnelle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021080609A1 (fr) * 2019-10-25 2021-04-29 Hewlett-Packard Development Company, L.P. Étalonnage de mesure de température dans une impression 3d
US20220072649A1 (en) * 2020-09-08 2022-03-10 Arcam Ab Devices, systems, and methods for encoding and decoding data in an additive manufacturing build chamber
WO2023277863A1 (fr) * 2021-06-28 2023-01-05 Hewlett-Packard Development Company, L.P. Quantités de couverture d'agent d'impression en fabrication additive
GB2610621A (en) * 2021-09-13 2023-03-15 Stratasys Powder Production Ltd Method of operation for an apparatus for layer-by-layer manufacture of 3D objects

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