3472 results about "3d printed" patented technology

Provided are a quantification method for microscopic cracks inside 3D printed concrete and a system thereof. Before measuring the microscopic crack images according to relevant standards, firstly, a denoising network, improved attention-guided denoising neural network (IADNet) is adopted. IADNet can extract features from microscopic crack images from different perspectives, perceive noise from multiple levels, and perform denoising processing, greatly improving image quality and enhancing texture details, which is beneficial for training segmentation networks. The combination of IADNet and semantic segmentation algorithm has the ability to finely recognize image information, quantify microscopic crack recognition, overcome the shortcomings of measurement and analysis of microscopic cracks inside 3D printed concrete, and improve construction efficiency and quality.

The invention belongs to the technical field of polymer preparation, and particularly relates to a curved-surface polyaniline modified 3D printing polyurethane material and application thereof. According to the preparation method, an ice crystal hard template method and a polyether glycol soft template method are combined, so that the microstructure of polyaniline is adjusted, and the curved polyaniline with regular morphology is prepared. The curved-surface arc-shaped structure has a large specific surface area, can form more contact sites with resin when being directly melt-blended with the resin, is beneficial to construction of a conductive path, and is not easy to agglomerate due to the curved-surface structure. The polyaniline with the arc-shaped structure is of a three-dimensional space structure and is directly blended with the resin to form a randomly arranged conductive network structure, so that the composite material is not easy to break when being impacted, and can be better embedded between the resin to form a stress transfer channel, and a complex three-dimensional network structure is constructed; the mechanical property and the antistatic capability of the product are improved.

The invention discloses a 3D printing layered honeycomb sandwich panel and a processing method thereof. The processing method comprises the steps that a digital forming platform is constructed, process parameters are initialized, a functional interface layer is laid on a printing substrate in advance, a three-dimensional model is generated, and the printing substrate is divided into a plurality of gradient areas; collaborative printing of a lower panel structure is executed, and a composite panel base body is formed by adopting a multi-nozzle alternate deposition process; according to the characteristics of the divided gradient areas, honeycomb units are formed layer by layer by dynamically controlling printing rheological parameters, and a gradient honeycomb core layer is constructed; the cooperative growth of the upper panel and the gradient honeycomb core layer is realized by adopting a rotary incongruous printing strategy; the performance of the core layer material is regulated and controlled through a multi-stage heat treatment process, and the functional interface layer is activated to obtain the honeycomb sandwich panel; according to the honeycomb sandwich board, the mechanical property customized distribution of the honeycomb core layer is realized, the surface-core interface bonding strength is improved by combining the directional activation mechanism of the micro interlocking structure and the functional interface layer, and the honeycomb sandwich board with high mechanical property and thermal stability is provided.

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printing control method based on multi-material gradient transition, which comprises the steps of model processing, multi-material distribution, path planning, dynamic parameter control, online monitoring and feedback optimization. According to the method, through dynamic mixing of a nonlinear gradient function and multiple materials, limitation of traditional discrete material switching is broken through, continuous smooth transition of material attributes is achieved, printing parameters are dynamically adjusted, and the forming consistency of gradient materials under complex working conditions is remarkably improved; local strengthening is carried out according to the thermodynamic property difference of a multi-material interface, interface embrittlement caused by a traditional single process is avoided, the curing degree is detected in real time through a spectrum sensor, the problem that the curing degree of a traditional light curing process is uncontrollable is solved by combining partitioned UV light intensity adjustment and control, and precise gradient forming of a soft and hard alternate structure is achieved.

The invention provides an acquisition and analysis method and system for 3D printing tool clamp data based on big data, and relates to the technical field of 3D printing and intelligent manufacturing, and the method comprises the steps: obtaining a clamp historical design scheme, machining parameters and sensor data, carrying out the feature extraction and data cleaning, and forming structured data; then, the design intention is analyzed based on a BERT-CNN model, and a clamp applicability classification database is constructed in combination with the classification model; and then, generating a lightweight clamp structure by adopting a generative adversarial network and topological optimization, and optimizing the topological structure of the lightweight clamp structure through an optimization model. Thirdly, simulation analysis is carried out, stress, deformation and thermal stress are evaluated, errors are optimized based on simulation parameters, and optimized clamp design data are obtained; and finally, the clamp is manufactured, stress data are collected in real time, and machining process parameters are optimized through dynamic analysis. According to the method, clamp design and manufacturing are optimized through data driving, and design efficiency and clamp performance are improved.

The invention discloses a concrete 3D printing path optimization method and system based on reinforcement learning, and the method comprises the following steps: representing a to-be-printed geometric model as a graphic structure composed of nodes and edges, each node being a specific position in a three-dimensional space on a printing surface, and the edge representing a feasible moving path of a printing head between the nodes; performing dynamic optimization on the movement of the spray head through a Q-learning algorithm, performing iterative calculation on a Q value, and completing dynamic adjustment on a printing path on the basis of an instant reward to obtain an optimal printing path with the minimum movement distance, the minimum sharp turn frequency and the minimum start-stop frequency; the optimal printing path data is converted into a standard G code, and the 3D printer is controlled to execute the optimal printing path based on the standard G code; by combining the solving process of the optimal Q value in the Q-learning algorithm and the construction requirements of concrete 3D printing path planning, the accurate optimal printing path planning can be efficiently completed through the self-learning-self-evolution algorithm advantages of the reinforcement learning model.

The present disclosure includes examples of an implant system configured for targeted joint resurfacing in which only an area including the osteochondral defect is resected, wherein the area resected occupies an area smaller than an entire joint surface. The implant system can include a monolithic first implant with 3D printed metal and a second implant including a plastic portion overmolded onto a metal portion. The metal portion of the second implant also includes 3D printed metal. The first and / or second implants include solid metal portion(s) and porous metal portion(s). In an example, the first implant can be a femoral implant and the second implant can be a tibial implant. The first and second implants can be used on their own or in tandem.

The invention discloses a 3D printing parameter optimization method and system based on artificial intelligence, and the method comprises the steps: scanning a printing object, determining the size and shape of the printing object, and obtaining a digital model of the printing object; the three-dimensional digital model of the printing object is divided into a plurality of layered sheets according to a preset rule, and a single-layer printing path, corresponding to each sheet, in the printing process is obtained; constructing a dynamic error analysis model, and calculating a geometric error index of the current slice; when any index exceeds a threshold value, triggering a parameter optimization process; inputting the real-time data and the error indexes into a pre-trained artificial intelligence optimization model to obtain a parameter adjustment scheme; actual forming data are obtained through a three-dimensional scanner, accumulative errors are calculated, and weight parameters of the artificial intelligence optimization model are updated. The method has the advantages that the real-time printing data is compared with ideal data, the printing parameters are dynamically adjusted through the artificial intelligence optimization model, the path is corrected according to errors, and the precision and quality of the printing process are improved.

Additively manufactured articles of footwear comprising a sole portion and an upper portion 3D printed as a single piece. In some embodiments, the article of footwear can comprise an outer skin comprising a plurality of continuous beams extending adjacent to each other and defining at least part of an outer contour of the upper portion, at least part of an outer contour of the sole portion, or both. In some embodiments, the article of footwear can comprise an inner skin comprising a network of beams defining at least part of an inner contour of the upper portion. In some embodiments, the article of footwear can comprise a core structure that connects beams of the outer skin to beams of the inner skin.

The present invention relates to the technical field of porous conductive ceramics. Disclosed are a selective laser sintering porous conductive ceramic 3D printing consumable and a preparation method. The selective laser sintering porous conductive ceramic 3D printing consumable comprises the following components in percentage by weight: 30-60 wt% of modified silicon carbide powder, 10-40 wt% of conductive phase powder, 10-30 wt% of a polymer binder, and 0.1-5 wt% of a lipid. The selective laser sintering porous conductive ceramic 3D printing consumable is obtained by means of a direct mixing ball milling method or a xylene solution mixed washing method. A porous conductive ceramic green body is printed by means of a laser 3D printer, and is subjected to thermal debinding and sintering to obtain a ceramic sintered part.

The invention discloses an airspace engine 3D printing thermal stress distribution control method which comprises the following steps: S1, importing a three-dimensional CAD model of an airspace engine structure, and generating a printing layer set; s2, constructing a three-dimensional node graph structure of a printing layer; s3, inputting the thermodynamic prediction input tensor into the heterogeneous attention map thermodynamic network to obtain a node-level thermal stress tensor map; s4, analyzing the node-level thermal stress tensor diagram, and extracting an optimized region; s5, calling an improved chameleon search algorithm in the optimization region; s6, optimal printing parameters of the current printing layer are determined; s7, the 3D printing device is controlled based on the optimized printing parameters, and real-time thermal inductance data are collected; and S8, mapping the thermal inductance feedback set of the printing layer to the corresponding node, and repeatedly executing the steps S2 to S7 until the whole airspace engine structure is printed. According to the method, the heterogeneous graph network and the improved chameleon search algorithm are fused, and precise control over the printing thermal stress of the airspace engine is achieved.

The invention provides a patterned reinforcing material 3D printing method and system based on an acoustic manipulation technology, relates to the combination of the acoustic manipulation technology and a digital light processing (DLP) technology, and is used for manufacturing a composite material sample piece containing patterned reinforcing filler distribution. According to the technology, a three-dimensional model is designed through computer aided design software, plane ultrasonic waves are converted into a specific three-dimensional sound field through a digital acoustic hologram, and accurate control over reinforcing filler in photosensitive resin is achieved. The acoustic control system controls the distribution of the reinforcing filler, and the DLP projector is used for curing the composite material layer by layer. The method allows the digital acoustic hologram to be adjusted in real time so as to adapt to different reinforcing filler patterning assembly and reinforcing requirements. According to the technical scheme, the control capability of 3D printing on reinforcing filler distribution is improved, and the application field of the composite material is widened.

The invention discloses an orthopedic 3D printing model construction method and device based on intelligent AI, and relates to the technical field of image.The method comprises the steps that a user database is collected, an image imaging scheme is configured, multi-view imaging is executed, and a DICOM format image data set is established; placing an image data set in the three-dimensional coordinate system and establishing registration mapping; after the image data set is preprocessed, skeleton segmentation is executed, and the segmentation trust degree is identified; carrying out image fusion reconstruction according to the registration mapping and the segmentation credibility, and generating a three-dimensional model for identifying the position complexity; printing placement fitting is carried out based on the three-dimensional model, the gravity direction is determined, and the geometrical shape is analyzed to determine a preliminary supporting area; according to the position complexity and the initial support area optimization support point, establishing a selection optimization result; and optimizing the three-dimensional model according to a selection optimization result, and generating an orthopedic 3D printing model of the user. Therefore, the technical effects of improving the modeling efficiency and precision and improving the printing stability are achieved.

The present application discloses a photocuring 3D printing platform and printing method. The photocuring 3D printing platform comprises: a forming platform; a middle adapter plate, the middle adapter plate being capable of being driven to drive the forming platform to do linear motion in a vertical direction; several leveling mechanisms arranged on the middle adapter plate, each leveling mechanism comprising an inclined surface block, an inclined surface positioning block abutting against a side edge of the inclined surface block, and a guide column block fixed on the middle adapter plate; and several buffer mechanisms elastically supported between the inclined surface positioning blocks and the forming platform, one end of each buffer mechanism abutting against a side edge of the corresponding inclined surface positioning block, and the other end of the buffer mechanism penetrating the middle adapter plate and then being fixedly connected to the forming platform.

The invention relates to a method and a construction and / or a materials-handling machine for guiding and moving a working head, in particular a 3D print head, wherein at least three revolving tower cranes are attached to each other with their booms, wherein according to one aspect of the invention a guide beam carrying the working head is attached to at least two trolleys of two revolving tower cranes, and the working head is adjusted and moved in its working position by moving the trolleys along two booms of two revolving tower cranes.

The invention discloses a 3D printing defect detection method based on improved YOLOv10n, and the method specifically comprises the steps: constructing a data set, and dividing the data set into a training set and a test set; processing the training set data; the method comprises the following steps of: constructing a DM-YOLO network model by taking YOLOv10n as a basic algorithm; the DM-YOLO network model comprises a trunk feature extraction network, a neck feature fusion network and a detection head network; training the network model by using the training set data; and inputting test set data into the trained DM-YOLO detection model, outputting category information of defect positions in the FDM printed piece, and obtaining a defect detection result. The network is deeply optimized on the basis of YOLOv10n, DSMCAttn, a DySample dynamic up-sampler and a lightweight single-head self-attention mechanism are integrated, and the detection precision and reasoning efficiency of small target defects are remarkably improved.

The invention discloses a flexible structure 3D printing support control method combined with a resistor, and relates to the technical field of 3D printing, and the flexible structure 3D printing support control method comprises the following steps: generating a continuous density field and a dynamic damping parameter field of a support structure based on multi-target topological optimization of dynamic stiffness constraint and material distribution; quantifying the contact probability of the support structure and the target model through a membership function, and constructing a nonlinear gradient field of a contact interface; the stress coupling relation between the supporting structure and the model interface is defined based on the mixed constitutive tensor, the interface stress transfer coefficient is adaptively updated based on the material shrinkage rate difference, multi-physics field collaborative optimization is achieved in combination with regularization constraint, the key part of the supporting structure is recognized, and the resistor is integrated to the key part of the supporting structure. Through multi-target topological optimization, membership construction and adaptive stress transfer coefficient updating, the material consumption is reduced, the printing efficiency is improved, stress concentration at an interface is inhibited, the forming defect risk is reduced, and the structural reliability is improved.

The invention provides multi-material continuous fiber 3D printing high-precision forming equipment which is composed of a device frame, a moving mechanism, a printing mechanism, a lifting control mechanism, an auxiliary heating smooth forming mechanism and an electric heating system. Self-adaptive slicing is carried out according to the curvature of the classification model, and slices are divided into slice sets A, B,..., and are transmitted to respective printing systems; and the printing system corresponding to each slice carries out layer-by-layer printing according to slice information, and heating balls carry out continuous smoothing treatment on the surface while the layer is printed. And after the single-layer printing is finished, the balls are processed to keep a smooth state. By means of the device and method, highly-integrated multifunctional parts can be achieved, the design freedom degree is provided, the manufacturing process is simplified, the cost is reduced, use of materials can be optimized, the performance and light weight of parts are enhanced, and multi-material development of composite material 3D printing is promoted.

Additively manufactured articles of footwear comprising a sole portion and an upper portion 3D printed as a single piece. In some embodiments, the article of footwear can comprise an outer skin comprising a plurality of continuous beams extending adjacent to each other and defining at least part of an outer contour of the upper portion, at least part of an outer contour of the sole portion, or both. In some embodiments, the article of footwear can comprise an inner skin comprising a network of beams defining at least part of an inner contour of the upper portion. In some embodiments, the article of footwear can comprise a core structure that connects beams of the outer skin to beams of the inner skin.

The present disclosure relates to a pulsing release module, a pulsing release resin tank, and a 3D printing device and printing method. The pulsing release module comprises a resin tank assembly, a support assembly and a pulse gas supply assembly, wherein the resin tank assembly is provided with a release film; the support assembly is arranged below the resin tank assembly, the support assembly is provided with a support member, and a first preset distance is provided between the support member and the release film in a height direction and is configured to form a gas cavity between the support member and the release film; a gas inlet and a gas outlet, which are in communication with the gas cavity, are provided in the support member; and the pulse gas supply assembly comprises a gas oscillation assembly and a gas conveying line, the gas oscillation assembly being arranged on the gas conveying line, and the gas conveying line being connected to the gas inlet.

Apparatuses, systems, and methods are disclosed for use in or with firearms. A firearm receiver includes an elongated channel machined or 3D printed from a metallic material, and has a front end and a rear end. The firearm also includes a front trunnion having a rear portion coupled to the front end of the elongated channel and having a front portion configured to couple to a handguard. Also includes is a rear trunnion coupled to the rear end and configured to receive an accessory adapter.

A method of making a customized catheter for an end user, comprising: capturing images of an end user's urethra; creating a 3D image of the end user's urethra; identifying areas of interest of the end user's urethra; generating a software or computerized model of a customized catheter using the 3D image, wherein the software or computerized model is modified based on the areas of interest; and 3D printing at least a portion of the customized catheter from the model and catheter made by this method

The invention discloses a 3D printed part morphology control method and system based on supporting structure morphology compensation, and relates to the technical field of additive manufacturing. Comprising the steps that a to-be-printed target model is processed, and a to-be-printed model considering a supporting structure form and slurry infiltration characteristics is generated; the printing direction of the to-be-printed model and the interface positions of different slurries during multi-material printing are determined, and the interface positions are perpendicular to the printing direction; according to the determined printing direction and the determined interface position, parts corresponding to different kinds of slurry are printed in sequence, and when the slurry is replaced, the datum plane of the printed part is cleaned, and residual materials are removed; and curing the printed model, removing the supporting structure, cleaning and integrally curing to obtain a final finished product. Liquid shaping is achieved only by means of the modified supporting structure, the printing time cost and the mechanical cost are saved, and accurate regulation and control of the liquid resin form are achieved on the premise that no external device is additionally arranged through integrally-formed supporting morphological optimization.

The invention discloses a two-photon polymerization 3D printing photoresist based on a boric acid ester bond and a preparation method thereof. The photoresist comprises a functional monomer containing the boric acid ester bond, a multifunctional acrylate monomer and a two-photon initiator, according to the two-photon polymerization 3D two-photon printing photoresist prepared by adopting the functional monomer containing the dynamic boric acid ester bond to reinforce and toughen conventional acrylic ester, the performance of resin is regulated and controlled by using different types of boric acid ester monomers and adding different proportions of boric acid ester monomers, the mechanical strength of the obtained photoresist can be regulated and controlled, and the performance of the photoresist is improved. Different parameters such as printing effect, hot residual weight and the like can be selected for a final application scene, and the method has a very wide application prospect.

The utility model provides a pottery clay 3D printing device capable of mixing and conveying raw materials in a fixed proportion, which comprises a rack, a 3D printing device, a 3D printing device and a 3D printing device, wherein the rack comprises an accommodating chamber and a printing chamber which are arranged in an up-down structure; the raw material conveying mechanism comprises a plurality of conveying assemblies arranged above the rack, and the conveying assemblies are used for conveying different raw materials; the mixing and extruding mechanism comprises an extruding assembly which can be transversely and movably arranged in the containing cavity and communicates with the conveying assembly, the extruding assembly comprises a material mixing bin body, a mixing cavity is formed in the material mixing bin body and communicates with the raw material conveying assembly, a stirring assembly is arranged in the mixing cavity, and an extruding head is connected to the lower portion of the material mixing bin body; the printing platform is arranged in the printing cavity in a longitudinal sliding mode and used for bearing 3D printing products, raw materials are directly printed in a printer after being mixed, efficiency can be greatly improved, and the problem that ceramic clay materials are possibly poor in uniformity and stability due to long-term placement or in the transferring process can be solved.

The invention relates to the technical field of 3D printing, in particular to a lightweight design method and system for a 3D printed product and a storage medium. The method comprises the following steps that geometric data information of a 3D printing model is obtained; performing model internal space volume distribution feature extraction and model wall thickness uniformity distribution evaluation on the geometric data information, and predicting a model structure load bearing capacity change trend to obtain structure load prediction data; detecting the optimized space attenuation trend of the material distribution density according to the structural load prediction data; performing dynamic interference removal intensity prediction on redundant materials in the model according to the optimization space attenuation trend to obtain redundant removal intensity data; and determining a coupling balance trend of model lightweight and strength maintenance based on the redundancy removal strength data and the optimized spatial attenuation trend. According to the method, accurate matching of the load demand and material distribution is realized by establishing the correlation model of the wall thickness uniformity and the load bearing capacity.

A continuous fiber reinforced composite topological lattice structure design and 3D printing method comprises the steps that firstly, the elastic tensor of a unit cell structure of a 3D printing continuous fiber reinforced composite is represented, then a topological optimization model of the unit cell structure of the continuous fiber reinforced composite is constructed and divided into sub-regions, fiber tracks are generated for the sub-regions, and finally the topological lattice structure of the continuous fiber reinforced composite is obtained. The arrangement angle of the unit cell structures is calculated, the unit cell structures are periodically filled, and fiber tracks in the sub-regions are obtained; secondly, extracting fiber tracks of the sub-regions, obtaining minimum printing paths of the fiber tracks in each sub-region in combination with a periodic unit cell structure printing form, and connecting to obtain 3D printing sub-paths; then the 3D printing sub-paths are connected to obtain a 3D printing path of the continuous fiber reinforced composite topological lattice structure, and G-codes are generated in combination with the printing speed and the material feeding rate and used for sample piece manufacturing of a 3D printer; the manufacturing requirements of continuous fiber 3D printing are met.

There is provided a 3D printed metal component having a metal body and an internal cavity within said metal body, the component comprising a 3D printed electrode within the internal cavity, the 3D printed electrode having lower density than the metal body.

The invention discloses an ice hockey helmet 3D printing lining and a printing method thereof, and relates to the technical field of helmets, the ice hockey helmet 3D printing lining comprises a first helmet lining, a second helmet lining, a third helmet lining and a fourth helmet lining, under the cooperation of a double-layer lattice structure, a single-layer lattice structure, an elastic layer, a breathable layer, an external force dynamic adjusting layer, a buffer memory layer, a temperature adjusting layer and an attaching positioning layer, all functional layers are tightly combined into a whole through the layer-by-layer construction advantage of the 3D printing technology, the structural integrity and function collaboration of the lining are improved, and the service life of the lining is prolonged. The helmet lining is comprehensively improved in the aspects of protection, comfort, air permeability, sweat absorption adjustment and the like, in the printing process, gradual change type parameter adjustment is adopted in a transition area of a single-layer lattice structure and a double-layer lattice structure, smooth connection is improved, and the printing quality of the helmet lining is improved. And stress concentration points are avoided, so that the shape can be effectively changed and the impact force can be dispersed when the whole body is impacted.

The present disclosure provides a ceramic three-dimensional (3D) printing device based on a gel molding process and a control method. The ceramic 3D printing device based on a gel molding process includes a feeding assembly, a receiving assembly, a scraping assembly, and a spray assembly. The feeding assembly includes a feeding pump and a storage hopper. The receiving assembly includes a feeding rod. The feeding pump can convey slurry in the storage hopper to the feeding rod. The control method includes introducing the atomized liquid into the storage hopper and the bearing groove through the first spray pipe and the second spray pipe respectively. According to the present disclosure, a water content of the slurry can be controlled to achieve a better curing effect.