3834results about "Manufacturing data aquisition/processing" patented technology

The invention relates to the technical field of 3D printing error compensation and precision control, and particularly discloses a printing comprehensive precision measurement method for 3D printing equipment, which comprises the following steps: designing a standard test piece containing various typical geometrical characteristics, and combining non-contact three-dimensional optical scanning and contact probe measurement means to measure the printing comprehensive precision of the 3D printing equipment. Spatial distribution data of printing errors are obtained in a controlled environment, a three-dimensional error field model with direction and amplitude information is constructed through point cloud registration and feature comparison, and based on error distribution features, the local resolution is dynamically adjusted by adopting a multi-level self-adaptive grid division strategy, so that a three-dimensional error field model with direction and amplitude information is constructed. A local error compensation model is established by combining tightly-supported radial basis function interpolation and a linear fitting method, a boundary consistency matching algorithm is introduced to realize multi-level model fusion, a unified global error compensation field is formed, an error offset vector field is embedded into a slicing process, point-by-point dynamic correction of a nozzle path is realized by using a trilinear interpolation algorithm, and the nozzle path is dynamically corrected. And the forming precision and the surface quality of the key structure are improved.

A robotic fleet resource provisioning system includes a computer-readable storage system storing a fleet resources data store and resource provisioning rules. The fleet resources data store maintains a fleet resource inventory indicating fleet resources, each with features, configuration requirements, and a status. The resource provisioning rules are accessible to an intelligence layer to ensure that provisioned resources comply with the resource provisioning rules. The system receives a request for a robotic fleet to perform a job and determine a job definition data structure. The definition data structure defines a set of tasks that are to be performed in performance of the job. The system determines a robotic fleet configuration data structure corresponding to the job based on the set of tasks and the fleet resource inventory. The system determines a respective provisioning configuration for each respective fleet resource. The system deploys the robotic fleet to perform the job.

The invention provides an intelligent image processing method and device for UV curing 3D ink-jet printing and a storage medium, and the method comprises the steps: carrying out the contour feature extraction of a slice image, and intelligently recognizing a supporting region based on the interlayer contour change and geometric features; printing data corresponding to the color ink layer, the white ink layer, the gloss oil layer, the shaping layer and the supporting layer are generated according to the contour features, the shrinkage judgment result and the overhanging area recognition result, the printing data serve as spot color channels and are combined with CMYK channels of the color ink layer, halftone processing is carried out on the data of the channels, and the color ink layer is obtained. And finally, generating and outputting a TIF format image file comprising at least eight channels, wherein the TIF format image file is used for driving the UV curing 3D ink-jet printer, the equipment and the storage medium storage and is used for realizing the intelligent image processing method during execution. According to the method, the printing precision and the material utilization rate are improved, and the problems of support generation, color management and quality control in multi-material 3D printing are effectively solved.

The invention belongs to the technical field of electrohydrodynamic printing control, and discloses an electrohydrodynamic printing control method and device, electronic equipment and a storage medium. The method comprises the steps that the viscosity state parameters of fluid in the printing process of an electrohydrodynamic printing system are obtained in real time, inputting the viscosity state parameter into a preset fluid state calculation formula, calculating to obtain a fluid state evaluation value of the fluid, adjusting the electric field parameter according to the fluid state evaluation value and a preset adjustment criterion to adapt to the state change of the fluid, obtaining the adjusted electric field parameter, and determining the viscosity of the fluid based on the viscosity change of the fluid and the Taylor cone form. The adjusted electric field parameters are optimized to control the electro-hydrodynamic printing system to maintain the stability of the Taylor cone; the electric field parameters are adjusted according to the fluid state evaluation value, the viscosity change and the Taylor cone form of the fluid in the printing process, so that the stability of the Taylor cone is maintained by the electro-hydrodynamic printing system, and the printing efficiency of electro-hydrodynamic printing is improved.

The application discloses a kind of based on 3D printing's three-dimensional model slice path processing method and device. Including: control 3D printer to starting point as starting point;Based on the region surrounded between starting point and reference point, determine the printing point to be printed that 3D printer needs to execute printing action during executing 3D printing job;Starting point and the printing point to be printed are sequentially connected by smooth straight line, generate printing path;Based on printing path control 3D printer executes 3D printing job and obtains target object, to effectively reduce the number of line segments of slice contour line of three-dimensional model forming target object, avoid 3D printer in printing job, in the pause frequency of line segment head, tail, simultaneously avoid the problem that 3D printing model surface protrusion is caused by long time scanning due to pause.In reducing pause frequency, printing is more smooth, improve printing efficiency, simultaneously also reduce algorithm complexity, help the simplification of algorithm.And effectively simplify the algorithm of 3D printer.

The invention relates to the technical field of additive manufacturing, and discloses an additive manufacturing lens surface optimization method based on real-time feedback control. The method comprises the following steps: firstly, acquiring eye biometric data and personalized visual demand parameters of a wearer, establishing a personalized optical model of eyeballs according to the eye biometric data and the personalized visual demand parameters, and deducing a retina defocusing amount distribution map; and determining spatial arrangement and geometric morphology parameters of the distributed out-of-focus microstructure layer on the lens according to the atlas. In the additive manufacturing process, the optical material is deposited and solidified layer by layer, and the three-dimensional shape information of the surface of the optical material is obtained in real time after deposition of each layer. And comparing and analyzing the morphology information with a theoretical model to generate a morphology deviation result. And then, a correction instruction of the printing parameters is calculated by using the correction model, and the printing parameters of the additive manufacturing equipment are adjusted in real time, so that real-time compensation and optimization of the morphology deviation are realized, and finally, a high-precision lens product meeting personalized optical design requirements is manufactured.

An information technology system for a distributed manufacturing network includes an additive manufacturing platform configured to manage workflows for a set of distributed manufacturing network entities associated with the distributed manufacturing network. The information technology system includes a set of digital twins generated by the additive manufacturing platform. The information technology system includes an artificial intelligence system configured to be executed by a data processing system in communication with the additive manufacturing platform. The artificial intelligence system is trained to generate process parameters for the workflows managed by the additive manufacturing platform using data collected from the set of distributed manufacturing network entities. The information technology system includes a control system configured to adjust the process parameters during an additive manufacturing process performed by at least one of the set of distributed manufacturing network entities.

The invention discloses a photocuring 3D printing mechanism method for multi-material cooperative spraying, and relates to the field of cooperative control, and the photocuring 3D printing mechanism method comprises the following steps: layering a model, generating a material distribution map, and labeling a functional area and a transition area; a multi-nozzle array is used for accurately positioning and spraying according to the atlas; a gradual change path is planned in the transition area, and gradient change of material components is achieved through cooperative spraying; a partition curing strategy is adopted, ultraviolet light full curing and visible light semi-curing are adopted, and leveling is promoted in combination with micro-vibration; spraying a penetrating agent between layers to form a mechanical interlocking enhanced interface; based on visual online defect detection, printing parameters are fed back and adjusted in real time through a CNN model. The device and the method have the advantages that accurate mixing of multiple materials is realized through cooperative spraying of the multiple piezoelectric sprayers and gradual change path planning, and real-time defect detection and correction can be realized by matching with differentiated photocuring, high-frequency micro-vibration leveling and interlayer penetrating agent interlocking, so that high-precision multi-material functional component forming is efficiently completed.

The invention belongs to the technical field of metamaterials, and particularly relates to a diamond substrate lattice metamaterial and an additive manufacturing method thereof. The structure is designed based on the geometric configuration of a diamond lattice, and has excellent high specific absorption mechanical properties. The design process comprises the following steps: firstly, carrying out spatial registration positioning on the basis of a unit cell structure with a preset wall thickness t and a unit cell width a; then, through a multi-unit-cell splicing design, the unit cells are spliced repeatedly for 12 times to form three-dimensional periodic stacking; then, the stacked structure is cut along the six datum planes; then cross plates are inserted into the six cutting faces respectively to enhance the integrity and strength of the structure; and finally, a complete DM plate lattice metamaterial structure is formed. The structure is provided with a plate-plate cross supporting framework, a complex three-dimensional inner cavity and highly symmetrical space distribution, the energy absorption capacity under unit mass is greatly improved, the mechanical properties are basically consistent in multiple directions, and the structure is suitable for the engineering fields of impact protection, energy absorption buffering and the like.

The invention discloses a three-dimensional printing method and three-dimensional printing equipment for manufacturing a target object. The three-dimensional printing method comprises the following steps: curing a first material to form a first part of a first layer in a plurality of target layers; curing the second material to form a second portion of the first layer of the plurality of target layers; curing the first material to form a first portion of a second layer of the plurality of target layers on the first portion of the first layer, the total thickness of the first portion of the first material being greater than the total thickness of the second portion of the second material; the steps are repeated to form a plurality of target layers of the target object. According to the scheme provided by the invention, various risks caused by the positioning accuracy of movement in the vertical direction are reduced.

An additive manufacturing real-time process parameter optimization method based on reinforcement learning driving comprises the steps that firstly, a multi-mode online monitoring hardware platform is constructed, and a visible light camera, a thermal imaging camera and an acoustic sensor are integrated to sense the working condition of the additive manufacturing process in real time in an omnibearing mode; secondly, extracting key features, including visible light images, thermal imaging and acoustic signal branches, of modal data on line through a lightweight CNN-Transform hybrid network, and generating a unified low-dimensional state vector through convolution feature extraction and fusion of a Transform encoder; then, a reinforcement learning model is established, a multi-target reward function is designed in combination with the extracted feature data, a process jitter penalty term, an overheating penalty term and the like are covered, and dynamic mapping of parameters and performance is achieved. And finally, an online learning and real-time decision-making system is deployed, the trained strategy network is embedded into manufacturing equipment, self-adaptive adjustment and closed-loop control of technological parameters are achieved, and the stability and product performance of the additive manufacturing process are effectively improved.

The invention relates to the technical field of oral implantation guidance, and provides a digital false tooth mounting and positioning device based on three-dimensional scanning and a method thereof. The method comprises the following steps: scanning the oral cavity of a patient through an oral cavity scanner to generate a three-dimensional oral cavity digital model; generating a virtual implant of the patient and corresponding initial implantation parameters based on the three-dimensional oral cavity digital model through a SegFormer segmentation network; based on historical operation data, initial implantation parameters, bone density, patient attributes and occlusal force parameters, a long sequence prediction network is adopted to predict the position offset and bone resorption degree of the virtual implant after osseointegration through a segmented attention mechanism and a network memory cache mechanism, and optimal implantation parameters are obtained; and pushing a visual dynamic model containing the candidate positioning strategy to the user based on the optimal implantation parameter, driving an oral cavity model printer to obtain an implantation guide plate model and an oral cavity environment model, assisting the user in verifying the installation effect of the candidate positioning strategy, and improving the accuracy of false tooth installation and positioning.

The invention discloses a 3D printing extrusion monitoring method and system based on continuous image analysis. The method comprises the following steps: acquiring image data of a printing head of a 3D printing platform at a plurality of continuous time points; according to the image data, a printing model part of the printing head is determined based on an image recognition algorithm; according to the image data, the discharging flow corresponding to the printing head is calculated based on a continuous image recognition algorithm; and according to the printing model part and the discharging flow, the flow abnormal condition corresponding to the printing head is analyzed. Therefore, accurate flow anomaly detection based on image analysis can be realized, the stability and the printing quality of the 3D printing process are improved, and the printing defect risk caused by flow anomaly is reduced.

The utility model discloses a 3D printer material changing mechanism and a 3D printer. The 3D printer material changing mechanism comprises a first driving device, a feeding mechanism, a feeding driven assembly, a material selecting mechanism, a first transmission assembly, a feeding linkage mechanism, a second driving device and a consumable material winding roller mechanism which are connected according to a set connection relation. The number of the feeding driven assemblies is multiple, consumables can be arranged between the feeding mechanism and each feeding driven assembly, and therefore multiple types of consumables can be selected for printing. By means of the material changing mechanism of the 3D printer, required consumables can be selected and conveyed to the spray head to be printed. According to the material changing mechanism of the 3D printer, consumables can be flexibly changed and selected for printing, and diversified printing requirements of people can be met. The utility model can be used for a single-nozzle 3D printer to print multi-color consumables, or for a single-nozzle 3D printer to print consumables made of various different materials.

The invention relates to the technical field of 3D printing, and discloses a fiber reinforced composite material 3D printer and a printing method, current deposition tows are heated / cooled under the action of a preset interlayer pressing force through an interlayer pressing device, interlayer fusion can be promoted, the interlayer bonding strength can be improved, the heat history in the wire cooling process can be eliminated, and the 3D printing quality of the fiber reinforced composite material is improved. The crystallization behavior, the grain size and the grain distribution of a polymer in a printing wire material are controlled, and the microscopic uniformity of a composite material printing product is improved. The side face and the upper surface of the current deposition tow are subjected to hot-pressing shaping through the inter-channel pressing device, meanwhile, secondary hot-pressing is conducted on the adjacent printing layer deposition tow, resin of the current deposition tow and resin of the adjacent printing layer deposition tow can be melted and flow, so that the inter-channel gap between the adjacent printing layers is filled, and the printing effect is improved. And the inter-track bonding strength is improved.

A tool for movement sequence analysis utilizing printed circuits. The tool determines a workflow sequence based, at least in part, on one or more printed circuits within a printed organic component. The tool activates the workflow sequence utilizing applied external stimuli on the one or more printed circuits. Responsive to activating the workflow sequence, the tool analyzes a signal response from the one or more printed circuits. The tool generates one or more printing recommendations based, at least in part, on the signal response analysis.

The invention relates to the technical field of preparation of medical supplies, in particular to a surgical membrane and a preparation process. During specific use, firstly, a polyurethane base membrane is selected and subjected to plasma treatment; spraying a nano SiO2 dispersion liquid containing a photoinitiator on the surface of the treated polyurethane base film, and then performing ultraviolet patterning irradiation to form a micro-bulge structure to obtain a base material layer; projecting the colloidal fluid to a temperature gradient mask through a digital micromirror device, so that the colloidal fluid is subjected to regional thermal polymerization on the substrate layer to form an intelligent adhesive layer with viscosity gradient; by adopting an aerosol jet printing technology, super absorbent fibers and polyvinyl alcohol-borax dynamic crosslinking hydrogel are co-deposited to form a drainage layer, so that the technical problems that a surgical membrane prepared by a surgical membrane preparation mode in the prior art is inflexible in adhesion and poor in surface structure performance, and a preparation process is difficult to accurately control are solved.

The invention relates to the technical field of additive manufacturing 3D printing, and discloses a 3D printing head for a continuous fiber reinforced composite material and a printing method. A concentric circle type step temperature control module is used for applying preset step type temperature fields distributed from inside to outside in a gradient mode to adjacent printing layer deposition tows and current deposition tows in the printing process, and the grain size and uniformity of crystalline resin in the adjacent printing layer deposition tows and the current deposition tows are regulated and controlled. The large deformation degree of a printed product after forming is avoided; and meanwhile, in the printing process, secondary heating melting is conducted on deposition tows of adjacent printing layers, under the action of a preset pressure field, fusion of the deposition tows of the adjacent printing layers and current deposition tows is promoted, the bonding strength between printing layers / channels is improved, and then the mechanical property of a 3D printing continuous fiber additive manufacturing printing product is improved.

The invention discloses a digital light processing printing control method based on temperature control microsphere bio-ink. Comprising the following steps: firstly, constructing a constitutive model of the three-phase conversion bio-ink according to melting conditions of dispersed phase microspheres in the three-phase conversion bio-ink at different printing temperatures and steady-state shear stress-shear rate curves at different printing temperatures; fitting is carried out by using the constitutive model and data in the steady-state shear stress-shear rate curve at different printing temperatures, and reconstruction coefficients and first damage coefficients corresponding to different printing temperatures are obtained; and finally, whether the three-phase conversion bio-ink has the forming capacity of the dynamic support bath at different printing temperatures or not is determined, so that the proper printing temperature is determined, and DLP printing is carried out. Proper bio-ink can be prepared according to actual bio-printing requirements, the optimal printing temperature is obtained, and accurate control over printing conditions is achieved.

The invention provides a three-dimensional printing method and three-dimensional printing equipment. The three-dimensional printing method comprises the steps that a first material is supplied to a bearing area of a light-permeable material containing mechanism of the three-dimensional printing equipment through a first channel of a material supply mechanism of the three-dimensional printing equipment; a second material different from the first material is supplied to the bearing area of the material containing mechanism through a second channel of the material supply mechanism; a forming platform mechanism of the three-dimensional printing equipment is moved, so that the forming platform mechanism makes contact with the first material and the second material in the bearing area; light rays are projected to the bearing area through an optical mechanism of the three-dimensional printing equipment, so that the first material and the second material are cured, and a curing layer adhering to the forming platform mechanism is formed; and the forming platform mechanism is moved away from the material containing mechanism, so that the curing layer is separated from the material containing mechanism.

The invention discloses a single-mode intelligent 3D printer control system, and relates to the technical field of 3D printing control, the single-mode intelligent 3D printer control system comprises a multi-source sensing module, an intelligent decision module and an evolution closed-loop module, the multi-source sensing module collects geometric features of a three-dimensional printing model and printing environment state data in real time; the intelligent decision-making module generates self-adaptive slicing parameters based on the data and dynamically adjusts printing process parameters; the evolutionary closed-loop module stores historical printing data and continuously optimizes parameters, the evolutionary closed-loop module, the evolutionary closed-loop module, the evolutionary closed-loop module and the evolutionary closed-loop module form a closed-loop system, and the system realizes full-process intelligent self-adaption from model analysis to printing execution, can improve the stability of printed pieces and the adaptability of the system, and is suitable for complex 3D printing tasks.

The embodiment of the invention provides a 3D printing process parameter generation method and device, equipment, a medium and a product. The method comprises the steps that a 3D printing request is received, and the 3D printing request comprises a target three-dimensional model and geometric data of the target three-dimensional model; according to the geometric data, the target three-dimensional model is subjected to layering processing, layering parameters are obtained, and the layering parameters comprise the position of each layer and the thickness of each layer; performing hierarchical calculation on the target three-dimensional model according to the geometric data and the hierarchical parameters to obtain a curved surface normal vector corresponding to a contact point on the surface of the target three-dimensional model; according to the curved surface normal vector, determining a printed piece attitude angle; and according to the attitude angle of the printed piece, the geometric data and the layering parameters, generating process parameters. According to the scheme, the matched process parameters are adaptively set at different curvature positions of the target three-dimensional model through layering processing, so that the accuracy of 3D printing is improved.

A three-dimensional (3D) printing system is configured to print a 3D article in a layer-by-layer manner and includes a vertical beam, an elevator, and a build platform. The elevator is configured for vertical translation along the vertical beam and includes an upper support and a lower support. The lower support includes at least one elevator actuator extending upward from an upper side. The upper support has a lower side including a datum surface in engagement with the actuator. The elevator actuator is configured to modulate a position of the upper side of the upper support. The build platform includes a build plate coupled below a support plate. The build plate has a lower side for formation of the 3D article. The support plate has a lower side that engages the upper side of the upper support of the elevator to support the build platform.

The invention discloses a deformation compensation method for a 3D printing model of an oral implanting guide plate, and belongs to the technical field of computer-aided design and manufacturing. The method comprises the steps that original three-dimensional model data of the oral implanting guide plate is obtained; performing dynamic hierarchical stress accumulation analysis on the original three-dimensional model data, and generating a dynamic stress evolution field for describing the internal stress distribution and change of the model in the virtual printing process; based on the dynamic stress evolution field, generating an adaptive compensation transformation matrix for correcting geometric deformation; and performing compensation transformation on the original three-dimensional model data by using the self-adaptive compensation transformation matrix to generate high-fidelity compensation model data. A self-adaptive compensation transformation matrix is generated through dynamic hierarchical stress accumulation analysis to preprocess three-dimensional model data, complex deformation in the printing process can be accurately predicted and compensated, and therefore the forming precision of a printed piece is remarkably improved.

Methods for calibrating a digital light processing additive manufacturing system. A method for scale factor calibration comprises: projecting calibration images of a calibration pattern by varying a projector's scaling factor; Capturing and analyzing the calibration images to determine dimensional attributes of the projected calibration pattern; Computing a calibration model fitting a relationship between the scaling factor and dimensional accuracy of the projector based on said dimensional attributes; Identifying a scaling factor where dimensional accuracy is optimal. A method for calibrating uniformity comprises: projecting a uniform pattern; capturing and analyzing a uniformity calibration image of said uniform pattern to determine a calibration intensity distribution of calibration image pixels; computing a correction map, wherein each correction map pixel is associated with a correction intensity determined using a tunable calibration factor and a calibration intensity of a corresponding calibration image pixel, wherein said tunable calibration factor depends on the calibration intensity distribution.

The invention belongs to the technical field of 3D printing, and particularly relates to a deviation real-time monitoring system for a 3D duplicating printing forming process, which comprises a three-dimensional reference feature extraction module, a printing interlayer deviation sensing module, a real-time feedback regulation and control module, a duplicating stability hidden danger output module and a user control management terminal, a high-precision reference model is constructed through a three-dimensional reference feature extraction module, a printing interlayer deviation sensing module comprehensively calculates and accurately captures interlayer deviation, a real-time feedback regulation and control module dynamically adjusts equipment and environment parameters according to a deviation value, and a stability hidden danger output module studies and judges potential risks and performs early warning. The duplicating printing performance evaluation module controls the product percent of pass and the equipment running state from the overall level, real-time monitoring, precise regulation and control and hidden danger pre-judgment of 3D duplicating printing deviation are achieved, the product reject ratio is remarkably reduced, the manual intervention cost is reduced, meanwhile, centralized management and control by a user are facilitated, and the intelligence and reliability of 3D duplicating printing are comprehensively improved.

The embodiment of the invention provides a control method of a printer, the printer and a computer readable storage medium, and the method comprises the steps: controlling a first collection device to collect first detection information containing a nozzle assembly of the printer, carrying out the calibration of the nozzle assembly for at least one time based on the first detection information, and carrying out the calibration of the nozzle assembly through automatic calibration. And deviation accumulation caused by mechanical installation errors, thermal expansion and cold contraction and long-term use is reduced.

The invention relates to the technical field of 3D printing, in particular to a 3D printer nozzle motion control method, which can obtain an original printing track, and adopts a five-point Bezier curve to carry out smooth transition processing on corners between adjacent track sections; generating a speed plan of the nozzle in the smooth trajectory, wherein the speed plan comprises an acceleration stage, a uniform acceleration stage, a constant speed stage, a uniform deceleration stage and an acceleration and deceleration stage; calculating a speed plan of an E axis in direct proportion to the speed plan of the nozzle; and according to the speed plan of the spray head and the speed plan of the E axis, the 3D printer is controlled to execute 3D printing along the smooth track, and synchronous movement of the spray head and the extruder is achieved. It can be understood that according to the technical scheme shown by the invention, the corner is smoothed, the direction of the spray head cannot change suddenly, five-section speed planning is adopted, the acceleration of the spray head changes smoothly, meanwhile, the E axis and the speed of the spray head are coordinated, and the precision and efficiency of 3D printing are improved.

The application relates to a modified separation membrane in the technical field of membrane materials, a preparation method and application thereof. The modified separation membrane comprises a base film and a nanostructure layer on the upper surface of the base film and the membrane hole surface close to one side of the upper surface of the base film; wherein the pore size of the base film is 120-400 mu m; the nanostructure layer is composed of microparticles with a size of 100-1000 nm; the preparation method comprises 3D printing of the separation membrane; and the upper surface of the separation membrane and the membrane hole surface close to one side of the upper surface of the separation membrane are subjected to plasma treatment. The modified separation membrane preparation method combines the 3D printing technology and the membrane separation technology, improves the traditional membrane preparation process, finds a more optimal membrane replacement process, and the modification method is free of chemical agents, has the advantages of being more convenient and fast to operate, high in separation efficiency, low in processing cost, green and pollution-free, and the like, and has important significance in the aspects of membrane separation technology improvement and application of oily wastewater treatment.

The invention discloses a 3D printing auxiliary arc-shaped mirror wall forming method for a flexible optical lens array. The method comprises the steps that an ideal optical model of the flexible optical lens array is established, and physical parameters of a forming material are obtained; performing multi-physical field coupling simulation on the whole forming process to predict and quantify an initial deviation field generated by physical deformation; according to the deviation field, a pre-distortion mold three-dimensional model capable of actively compensating deformation is generated through iterative calculation of a reverse topological optimization algorithm; printing a high-precision physical mold according to the model by using additive manufacturing equipment; injecting a liquid flexible material into the physical mold for curing and molding, and demolding to obtain a flexible optical lens array; according to the invention, active and high-precision control of forming deviation is realized, the product precision and research and development efficiency are improved, the manufacturing cost is reduced, and a set of standardized and intelligent solution is provided for precision manufacturing of complex flexible optical elements.