3407results about "Additive manufacturing with solids" patented technology

An additive manufacturing condition search device includes a defect database that accumulates a material, shape information, an additive manufacturing condition, monitoring information during modeling, and defect information in association with each other, a first machine learning unit that outputs an additive manufacturing condition corresponding to material information and device information, and outputs a new additive manufacturing condition from a combination of a plurality of the additive manufacturing conditions and the defect information, a specification unit that causes an additive manufacturing apparatus to perform modeling by the additive manufacturing condition, acquires the monitoring information during modeling, and acquires the shape information and the defect information by inspection of a modeled object, a second machine learning unit in which a model trained by using the defect database as train data estimates defect information of the modeled object from the monitoring information and stores the defect information in the defect database, and a determination unit that determines whether or not the defect information of the modeled object has achieved an evaluation target value.

Techniques are described for calibrating an optical system in an additive fabrication device using an image of the build surface within the device. These techniques allow calibration to be performed by imaging one or more calibration features generated on (or at) the build surface, which may include illuminated regions of the build surface, regions of the build surface on which solid material has been formed, and / or regions of the build surface to which energy has otherwise been directed thereby making those regions distinguishable from their surroundings. The calibration features may be produced (at least in part) by the optical system to be calibrated. The location of the calibration features within the image may be compared with the intended location of these calibration features, and corrections to the optical system determined based on any differences between the actual and intended locations.

Systems and methods for processing additively manufactured objects are provided. In some embodiments, a method includes receiving one or more additively manufactured objects that are at least partially covered with a precursor material, cooling the one or more additively manufactured objects and the precursor material to a target temperature, and removing at least some of the precursor material from the one or more additively manufactured objects via application of mechanical force.

An iron-type golf club includes an iron-type golf club head formed of metal by an additive manufacturing process. The iron-type golf club head includes a front side, a rear side, a bottom side, a top side, a toe side, and a heel side, and a body that defines a medial region between a toe region and a heel region. The iron-type golf club head also includes a first plane that extends orthogonal to a ground plane and separates the toe region from the medial region, and a second plane that extends orthogonal to the ground plane and separates the heel region from the medial region. A front face extends along the front side from the toe region, through the medial region, and into the heel region, and the front face and the body are formed of sintered metal by the additive manufacturing process.

The invention discloses a topological optimization multi-level liquid cooling structure and a manufacturing method, and relates to the technical field of heat dissipation and thermal management, the topological optimization multi-level liquid cooling structure comprises a liquid cooling plate, and a multi-level flow channel network composed of a first macroscopic main flow channel, a second macroscopic main flow channel and micro flow channels is arranged in a cavity of the liquid cooling plate; a liquid inlet and a liquid outlet are formed in the symmetrical positions of the two ends of the upper surface of the liquid cooling plate in the length direction; the liquid inlet is communicated with the first macroscopic main runner; the liquid outlet is communicated with the second macroscopic main runner; the liquid inlet is used for allowing cooling liquid jet flow to enter the multi-level flow channel network; the first macroscopic main flow channel and the second macroscopic main flow channel are communicated with the micro-channel and are lower than the micro-channel; a to-be-cooled heat source abuts against the upper surface of the liquid cooling plate through the heat conduction slide glass. And the horizontal position of the micro-channel in the cavity corresponds to a heat source to be cooled. The heat dissipation requirement under the working condition of high heat flux can be met, the cooling efficiency is high, and the temperature equalization performance is excellent.

Monitoring and control system and method for additive manufacturing an in-situ macro-field thermography that uses an IR camera or near-IR camera to prioritize the data captured from an entire print layer, processes data streams layer-by-layer, and provides thermal history of previously printed layers as feedback to the control system. The system leverages one or more different mathematical thermophysical-based (MTB) models to compute a thermally related specification in order to optimize the printing sequence of islands or stripes layer-by-layer. The thermal feedback from the thermography system calibrates or updates the thermal model layer-by-layer. The system and / or method may provide real-time optimization of scanning topology in chessboard and stripe printing strategies. The method may be implemented by one or more computer programs controlling one or more computer controllers of an additive manufacturing system, such as a 3D printer implementing a metal powder bed fusion additive manufacturing process.

The invention discloses a method and a system for regulating and controlling melting forming precision of a polymer laser powder bed and a method for improving the forming precision, and belongs to the technical field of additive manufacturing. Comprising the following steps: acquiring temperature distribution data in a polymer LPBF process; constructing a database based on the temperature distribution data and process parameters adopted for printing the current layer; based on machine learning, a polymer LPBF technological process accurate regulation and control model is established; training of the polymer LPBF technological process accurate regulation and control model is completed through the database, the mapping relation of technological parameters, the printing layer thickness and layer-by-layer temperature field distribution is established, a negative feedback mechanism of the technological parameters and the printing layer real-time temperature field is obtained, and accurate regulation and control of polymer laser powder bed fusion forming precision are completed. According to the method, the excellence of the reinforcement learning algorithm in the aspect of big data processing is utilized, the heat accumulation phenomenon in the forming process is improved, the defects of warping, caking and the like are eliminated, and the method has guiding significance for improving the precision and performance of polymer material LPBF process forming parts.

Examples of methods are described. In some examples, a method includes determining, using a variational autoencoder model, a latent space representation based on a three-dimensional (3D) input. In some examples, the 3D input represents a build of manufacturing powder. In some examples, the method includes predicting manufacturing powder degradation based on the latent space representation.

Described herein are systems and methods for detecting flaws during an additive manufacturing (AM) process. A method can include accessing, by a computer, simulation results of a computer-modelled part representing a physical part to be formed using the AM process. The simulation includes a thermal history model for the computer-modelled part. During run-time formation of the physical part, the method includes receiving, from sensor devices, real-time sensor data of temperature values for nodes within regions of the physical part as each region is formed. The method also includes determining, for each region as the region is formed in the physical part, a deviation between the real-time sensor data of temperature values for nodes within the region and temperature values of the thermal history model for the computer-modelled part, and identifying flaws in the physical part based on determining that the deviation satisfies criteria indicating a flaw.

A process of manufacturing a golf club component includes spreading a thin layer of metal powder over a build plane defined over a build platform and bonding, using a laser, portions of the thin layer of metal powder. The spreading and bonding are repeated until the golf club component is formed. The golf club component comprises a lattice structure positioned within an internal cavity of the golf club component and the lattice structure is interrupted by a solid portion that extends along a bottom side of the golf club component from a toe region of the golf club component to a location between the toe region and a heel region of the golf club component.

A process of manufacturing a golf club head that includes the steps of generating, via an additive manufacturing process, a printed part that includes the steps of printing a material, layer by layer, along a build plane and creating at least one blow through aperture that allows fluid to flow through an internal cavity of the printed part. The build plane is offset from a ground plane by between about 5 degrees and about 160 degrees. The ground plane is defined as a horizontal plane parallel to the ground when the golf club head is at address. The process also includes the steps of excavating the printed part by forcing excess material out from within the internal cavity using the at least one blow through aperture and removing excess material formed at one or more material deposits disposed along the printed part golf club head.

Support structures are used in certain additive fabrication processes to permit fabrication of a greater range of object geometries. For additive fabrication processes with materials that are subsequently sintered into a final part, an interface layer is formed between the object and support in order to inhibit bonding between adjacent surfaces of the support structure and the object during sintering.

An additive manufacturing system includes an energy delivery device configured to deliver energy to a build surface of a component to form a melt pool in the build surface of the component, a powder delivery device configured to direct a powder stream toward the melt pool, at least one sensor configured to generate sensor data representative of at least one process characteristic, and a computing device. The computing device is configured to receive the sensor data from the at least one sensor, determine, based on the sensor data and a predictive model data, at least one powder control parameter configured to achieve a predetermined powder feed rate of the powder stream, and control, based on the at least one powder control parameter, the energy delivery device and the powder delivery device to deposit a plurality of layers.

A powder spreading device includes a device body, an adjustment assembly, and a dust removing mechanism. The adjustment assembly is provided on the device body. The adjustment assembly is configured to orient to a powder spreading surface. A first end of the dust removing mechanism is provided on the device body. The first end of the dust removing mechanism is covered over the adjustment assembly. A second end of the dust removing mechanism is communicated to the first end of the dust removing mechanism. The second end of the dust removing mechanism is configured to extend to the device body. A three-dimensional (3D) printing device and a 3D printing system are further provided.

Method for forming a three-dimensional object by successively melting applied powder, the method comprising the following steps: a. Providing at least one powder container containing powder to be used for forming the three-dimensional object, b. Providing a predetermined amount of powder on a support structure, c. Directing an energy beam over the support structure, causing at least one section of the powder to sinter and at least one section of the powder to bond with the support structure, d. Directing an energy beam over the support structure, causing the powder to melt in selected areas according to a model to form a first section of the three-dimensional object, characterized in that the method further comprises the following steps: e. Rotating the support structure around an axis of rotation to create the three-dimensional object, which is built layer upon layer in a radial direction with reference to the axis of rotation.

The invention discloses a multi-material localized printing device and method based on a selective laser melting technology. The device comprises a laser printing head, a printer shell, a groove type lifting printing table, a powder storage mechanism, a powder feeding execution mechanism, a powder scraping mechanism and a regional powder covering mechanism. The groove type lifting printing table is arranged on the printer shell; the laser printing head is located above the groove type lifting printing table. The powder storage mechanism is located on the side of the groove type lifting printing table. The powder feeding executing mechanism is located below the powder storage mechanism. The powder scraping mechanism is located behind the groove type lifting printing table. The regional powder covering mechanism is located in front of the groove type lifting printing table. Various materials can be selected during one-time forming machining, material conversion in the forming machining process is simpler and faster, multi-material combination can be achieved in different areas of the same-layer structure in the horizontal direction, and multi-material combination can be achieved in different areas or the same area of the different-layer structure in the vertical direction; and the forming requirements of multi-material integrated parts are effectively met.

Disclosed are techniques for converting polymeric powder that has been discarded from a powder bed fusion process into a raw material suitable for an alternative form of additive manufacturing involving extruded deposition. As applied to polyamide powders, the disclosed methods improve suitability of the material for an extrusion process by adding another polyamide species in which the spacings between functional groups on the polymer chain do not follow a repeating pattern. In at least one preferred embodiment, a fibrous filler is also added to further improve dimensional compliance and stability in parts formed by depositing extruded beads of the inventive composition.

Support structures are used in certain additive fabrication processes to permit fabrication of a greater range of object geometries. For additive fabrication processes with materials that are subsequently sintered into a final part, an interface layer is formed between the object and support in order to inhibit bonding between adjacent surfaces of the support structure and the object during sintering.

The invention discloses a wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part for LPBF and a forming method of the wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part, and belongs to the technical field of additive manufacturing. The forming method comprises the steps that polyether-ether-ketone powder and molybdenum disulfide powder are pretreated according to different modes; after pretreatment, the two kinds of powder are mechanically mixed according to a specific proportion, and wide-temperature-range polyether-ether-ketone-based self-lubricating composite material powder is obtained; and carrying out printing forming on the polyether-ether-ketone-based self-lubricating composite material powder by adopting a laser powder bed melting (LPBF) specific process to obtain a wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part. Molybdenum disulfide is adopted to enhance the friction and wear performance of polyether-ether-ketone in a wide temperature range, the printability of powder is improved through special pretreatment, and a high-performance wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part suitable for high and low temperature extreme environments is obtained through forming by adopting specific LPBF processes such as multidirectional cross scanning and the like.

A process of manufacturing a golf club head. The process comprises the step of spreading a thin layer of metal powder over a build plane defined over a build platform. The process also comprises the step of selectively depositing droplets of a binding agent over the thin layer of metal powder in order to bond the metal powder. The process further comprises the step of sintering a green part body to form the golf club head. The golf club head comprises a lattice structure positioned within an internal cavity of the golf club head. The build plane is offset from a ground plane by between about 5 degrees and about 160 degrees. The ground plane defined as a horizontal plane parallel to the ground when the golf club head is at address. The build plane is not a face angle of the golf club head.

An aerospace panel includes a first skin, a second skin spaced apart from the first skin, and a first truss structure connecting the first skin to the second skin. The first truss structure includes a plurality of truss members. Each truss member is integral with the first skin and the second skin, such that the first skin, the second skin, and the first truss structure collectively form a single monolithic joint-free structure. At least one of the skins also includes at least one lattice region that includes a lattice grid and an array of openings.

The present invention relates to a polymer powder for the manufacture of articles by 3D printing, in particular by sintering, comprising a thermoplastic polymer, antioxidants, and a particular metal oxide, metal hydroxide and / or hydrotalcite, having improved thermal stability, improved recyclability and improved consistency of mechanical properties of the sintered parts.The invention also relates to a process for preparing this powder and to the use thereof in a process for manufacturing by sintering, and to the articles manufactured from said powder.

The invention discloses a light energy focusing vacuum 3D printing fusion forming device and method. The device comprises a vacuum cabin system used for providing a vacuum environment, an optical energy focusing system used for forming fixed high-temperature light spots in the vacuum environment through external optical energy, a powder laying and printing system used for laying powder layer by layer in the vacuum environment and conducting 3D printing through the high-temperature light spots, and a control system used for achieving automatic operation of the whole device. The vacuum cabin system comprises a cabin body, a vacuum pump, a cabin body upper cabin door, a lens mounting seat, a vacuum detection piece and a vacuum valve; the light energy focusing system comprises a condensing lens, a light source and a light shield; the powder laying and printing system is arranged in the cabin body and comprises a powder pool mechanism, a powder laying mechanism and a planar motion mechanism. According to the device, combination of high-energy beam 3D printing fusion forming and vacuum 3D printing is achieved, and the vacuum light energy sintering 3D printing process can be completed under the ground condition.

Embodiments of the present disclosure provide an apparatus, a system, and a method. The apparatus is configured to depowder and extract one or more printed parts prepared by a three-dimensional (3D) printer. The apparatus includes an elevated frame, a perforated plate, a movable unit, a lifting-lowering mechanism, a depowdering unit, and at least one gripper. The elevated frame is configured to receive fully raised at least one 3D printed layer and partially raised at least one powder layer. The movable unit is engaged to a front end portion of the perforated plate and adapted to move longitudinally along with the perforated plate, within the elevated frame. A connecting member of the movable unit is adapted to be positioned in front of the front end portion. At least a portion of the connecting member transversely slides within the partially raised at least one powder layer.

The present invention relates to a process for the production of a composite article comprising a structured porous body (PB) and a particle foam (PF), wherein the provided structured porous body (PB) is inserted into a mould (M) and the mould (M) is filled with expanded foam beads (EFB) so that the expanded foam beads (EFB) are in contact with each other and the structured porous body (PB) is at least partially in contact with the expanded foam beads (EFB). Then, the expanded foam beads (EFB) are thermally welded, wherein the particle foam (PF) is built and the composite article is obtained. Moreover, the present invention relates to a composite article obtained by this process, as well as to a composite article comprising a structured porous body (PB) and a particle foam (PF). The present invention further relates to the use of the inventive composite articles in the shoe industry, in the sports and leisure sector, in vehicle construction, in the medical sector, in mechanical engineering and in the logistics sector. Furthermore, the present invention relates to a composite article comprising a structured porous body (PB) and a foam (F), wherein the structured porous body (PB) and the foam (F) comprise the same polymer (P).

In an example, a method includes defining, for an interior portion of an object to be generated in additive manufacturing, an imaging characteristic in a radiation environment. In some examples the method further includes deriving object model data for generating the interior portion of the object by determining an amount of a first contrast agent and an amount of a second contrast agent to deposit such that the object generated according to the object model data comprises the defined imaging characteristic apparent in an image of at least a part of the object comprising the interior portion captured in the radiation environment. The first contrast agent and the second contrast agent may have different imaging characteristics in the radiation environment.

A system may include a build plate aligned with a build plate plane and at least one build plate actuator operatively coupled to the build plate and configured to change a pose of the build plate plane. The build plate may be configured to receive a layer of material. One or more distance sensors may be configured to obtain build plate distance information including a relative distance between a reference frame of an optics assembly and the build plate and / or the build surface of the layer of material. At least one processor may be configured to receive the build plate and / or build surface distance information from the one or more distance sensors, and command the at least one build plate actuator to adjust the pose of the build plate plane based at least partly on the build plate and / or build surface distance information.

This invention relates to a base body (2), at least one table (3) arranged on the base body (2) on which the powders (T) can be deposited and processed, several layers (4) formed by sintering or fusing the powders (T) deposited on the table (3), at least one energy source (5) located on the base body (2) which applies energy to the powders (T) deposited on the table (3), thereby enabling the production of layers (4), and at least one control unit (6) which enables the production of the layers (4) according to the parameters specified by the users.

The invention discloses a direct laser deposition additive manufacturing method, device and equipment and a medium, and relates to the technical field of additive manufacturing. Comprising the steps of generating a plurality of model slices and a printing track corresponding to each layer of model slice according to workpiece model data; printing operation is conducted based on the current printing parameters and the printing track corresponding to the current target model slice, and after the printing operation of the target model slice is completed, the height value of each area of the current printing workpiece is obtained; and judging whether each model slice is printed or not, if not, adjusting the current printing parameter and a printing track corresponding to the next layer of model slice, taking the next layer of model slice as a new target model slice, and skipping to the step of performing printing operation based on the current printing parameter and the printing track corresponding to the current target model slice. And the target printing workpiece is obtained until all the model slices are printed. Therefore, automatic parameter regulation and control and defect detection on the formed part in the additive manufacturing process are realized.

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, devices, and systems for the production of at least one requested 3D object and for removal of a remainder material. The removal may be accomplished when the remainder material exhibits challenging conditions during removal while being safe for a user, the conditions comprising temperature, reactivity, bridging tendency, or possible loss of fluidity.