41 results about "Cad system" patented technology

The invention relates to the technical field of air conditioner fan blade design optimization, and discloses an air conditioner fan blade optimization method and system based on a BP neural network and a GA algorithm. The method comprises the following steps: obtaining initial geometric parameters and performance data of a fan blade, and cleaning and standardizing the initial geometric parameters and the performance data to form a standard data set; a BP neural network is used for training to obtain a fan blade performance prediction model; a genetic algorithm is applied to optimize the prediction model, and a new design parameter population is generated through genetic operations such as selection, crossover and variation; the optimized parameters are input into a CAD system to generate a candidate fan blade model, numerical simulation is carried out, and performance indexes of the candidate fan blade model are calculated; and screening excellent individuals based on a multi-objective optimization method, iteratively executing optimization and simulation processes until convergence, and finally outputting an optimal fan blade design. According to the method, the fast prediction of the neural network and the global search capability of the genetic algorithm are combined, the dependence of traditional optimization on high-frequency numerical simulation is reduced, and the design efficiency and quality are improved.

The present invention relates to a CAD collaborative design system, for storing CAD files according to a timeline, and that facilitates restoration and review of versions created, modified, and updated at different times. The system stores the CAD files by means of summary files and incremental databases, thereby reducing data transmission volume, ensuring accuracy of file restoration, and improving the file management efficiency of the entire CAD system.

To improve the convenience of a panel design support system that enables the design of panels such as switchboards. [Solution] This is a panel design support system that enables the design of panels (such as distribution boards) using a CAD system, and by specifying the placement of electrical and electronic equipment so that it overlaps with the panel mounting parts used to attach the electrical and electronic equipment, the panel design support system can group the panel mounting parts and the electrical and electronic equipment as a collective entity.

The present application belongs to the field of computer aided design and computer aided manufacturing system, and relates to a CAD model simplification and repair method based on intelligent decision: firstly, a user imports an original CAD entity model through an interactive interface in a CAD system; then, the system detects redundant topological information existing in the CAD entity model, including redundant points, edges and surfaces; then, an optimal cleaning sequence is generated by using a reinforcement learning method for all the detected redundant topological problems; then, two geometric surfaces that need to be merged are merged in the process of removing the redundant topologies in sequence; finally, the merged topologies are updated on the whole model. The method can solve the problems of strong cleaning sequence dependency and large geometric distortion in traditional geometric simplification, and ensure the manifold and topological correctness of the final model after simplification, and is applied to subsequent mesh generation and precision manufacturing.

The invention discloses a method for designing and manufacturing a multi-scale geometric product. The method comprises the following steps of: importing a three-dimensional grid in a CAD (Computer Aided Design) system through an interactive interface by a user; the system generates an initial primary function based on topological information of a three-dimensional grid, and establishes mapping from a parameter domain to a physical space; setting a control coefficient of each control node, generating a unit structure expressed by a control coefficient-primary function combination in a grid unit parameter domain, and mapping the unit structure to a physical space to obtain an initial geometric product; subdividing the target grid unit and the corresponding control coefficient, and generating a truncated hierarchical basis function according to a subdivision relation; and adjusting a fine layer control coefficient to increase geometric details of the unit structure, and finally mapping to obtain a geometric product with a multi-scale feature. According to the method, the truncation layering primary function can be constructed for the control grid with any topology, the topology limitation of a traditional B-spline primary function is overcome, local geometric details can be introduced step by step through hierarchical refinement, and therefore design and manufacturing of multi-scale geometric products are achieved.

The application discloses a design and manufacturing method of a multi-scale geometric product, which comprises the following steps: a user imports a three-dimensional grid in a CAD system through an interactive interface; an initial base function is generated based on topological information of the three-dimensional grid, and a mapping from a parameter domain to a physical space is established; control coefficients of each control node are set, a unit structure expressed by a combination of the control coefficients and the base function is generated in the parameter domain of a grid unit, and the unit structure is mapped to the physical space to obtain an initial geometric product; a target grid unit and corresponding control coefficients are subdivided, and a truncated hierarchical base function is generated according to a subdivision relationship; a fine layer control coefficient is adjusted to increase geometric details of the unit structure, and finally a geometric product with multi-scale characteristics is obtained by mapping. The application can construct a truncated hierarchical base function for a control grid with an arbitrary topology, overcomes the topological limitation of a traditional B-spline base function, and can gradually introduce local geometric details through hierarchical refinement, so that the design and manufacturing of a multi-scale geometric product are realized.

A computer-implemented method of designing a 3D modeled object representing a mechanical product. The 3D modeled object has a feature tree and an original value of a set of semantic parameters. The method includes by a user graphically interacting with the 3D representation graphically selecting a semantic point of an outer surface of the 3D modeled object and graphically selecting one or more target 3D positions of the semantic point. The method further includes, automatically, iteratively modifying the value of the set of semantic parameters. Thereby the method obtains an updated value of the set of semantic parameters. The method further includes, automatically by the CAD system, updating the 3D representation of the 3D modeled object based on the updated value of the set of semantic parameters. This provides an improved solution for updating 3D modeled objects based on graphical interactions.

The disclosed solution is generally configured for integration with a computer aided dispatch (“CAD”) system in order to analyze the mental and emotional health of law enforcement officers. The disclosed solution relies on artificial intelligence (“AI”) based on large-language models (“LLMs”) in order to process and categorize CAD-based data in order to detect opportunities to provide mental and emotional support for responding law enforcement who face difficult emergency situations. The disclosed solution is configured to operate with existing CAD systems in order to reduce reconfiguration and retraining of dispatchers.

Exemplary embodiments of the present invention provide a virtual dispatch assist system in which various types of Intelligent Agents are deployed (e.g., as part of a new CAD system architecture or as add-ons to existing CAD systems) to analyze vast amounts of historic operational data and provide various types of dispatch assist notifications and recommendations that can be used by a dispatcher or by the CAD system itself (e.g., autonomously) to make dispatch decisions.

Exemplary embodiments of the present invention provide a virtual dispatch assist system in which various types of Intelligent Agents are deployed (e.g., as part of a new CAD system architecture or as add-ons to existing CAD systems) to analyze vast 5 amounts of historic operational data and provide various types of dispatch assist notifications and recommendations that can be used by a dispatcher or by the CAD system itself (e.g., autonomously) to make dispatch decisions. 20 24 20 30 89 09 M ay 2 02 4 2 0 2 4 2 0 3 0 8 9 0 9 M a y 2 0 2 4 A B S T R A C T O F T H E D I S C L O S U R E 5

An object of a system according to an embodiment is to enable a user to intuitively operate a CAD system.SOLUTION: A system according to an embodiment includes a generation AI, a chat bot UI, a logic implementing unit, and a design concretizing unit. The generation AI integrates various functions of the CAD system. The chatbot UI allows the user to intuitively operate the CAD system. The logic implementing unit executes a CAD operation based on a user's request received by the chatbot UI. The design concretization unit sets a design element of the chatbot UI.SELECTED DRAWING: Figure 1

This invention discloses a voice-driven method and system for modeling mechanical components. The user inputs natural language commands containing design intent into a CAD system via voice, which are then parsed into structured operation commands. Simultaneously, a baseline model is selected, and geometric codes are generated for each face based on its local geometric attributes, constructing a geometric structure coding matrix. Next, a machining face prediction network is used to predict each machining face in the machining features, resulting in a sequence composed of all machining face IDs of the machining features, which is denoted as the machining face ID sequence. Finally, the CAD platform API is called to obtain the model of the target mechanical component. This method connects the designer's high-level design intent with low-level geometric operations, avoiding the cumbersome interaction and cognitive burden of manually selecting and manipulating low-level geometric elements (points, edges, faces) in traditional direct modeling, thus significantly improving design efficiency.

A computer-implemented method (100) for generating 3D points in space for component positioning in a complete tool (10) with a plurality of components (12) for forming the complete tool (10), wherein the complete tool (10) is a printing tool, in particular a printing die, or a drawing tool, in particular a drawing die (20), the method (100) comprising the steps of: - reading (110) a digital pattern (14) of a body part (16) to be produced by the complete tool (10) into a trained machine learning model; - creating (120) a digital contour profile (18) by a CAD system, in particular by mapping it onto the complete tool (10); - predicting position points and orientations of components (12) for forming the complete tool (10) by the trained machine learning model, based on the contour profile.

The application discloses a CAD system interfile reconstruction method and device, comprising: when a first CAD system transmits a model to a second CAD system, obtaining a mapping table previously created between the first CAD system and the second CAD system; obtaining a to-be-transmitted file of the first CAD system; parsing the to-be-transmitted file to obtain model parsing data of the to-be-transmitted file; determining equivalent implementation data of the first CAD system in the second CAD system according to the mapping table; and applying the model parsing data to the equivalent implementation data to obtain a reconstructed file adapted to the second CAD system. The method of the application effectively retains key parameterized information of a model through an intelligent mapping and reconstruction mechanism, enables a target CAD system to directly inherit parameter editing capability of a source model, significantly improves cross-system model reusability and design optimization efficiency, and avoids information discontinuity problems in a traditional transmission mode.

The invention belongs to the related technical field of computer aided design, and particularly discloses a CAD geometric constraint system diagram expression method and system based on a ternary body, CAD system expression is divided into three layers, the top layer is geometric elements and engineering constraints; the middle layer adopts a ternary body which comprises a position body representing the positions of the geometric elements, a posture body representing the postures of the geometric elements, and a parameter body representing the measurement of the geometric elements or between the geometric elements; the geometric constraint directed graph of the bottom layer comprises graph vertexes and directed edges, the graph vertexes comprise five types: cube vertexes corresponding to a position body, sphere vertexes corresponding to an attitude body, and parameter vertexes or constrained vertexes corresponding to a parameter body, and the whole can be used as a composite vertex when the subgraphs of the directed graph are subjected to overall analysis or non-constrained vertexes form a directed ring; and the directed arc records the constraint relation between the vertexes of the graph. According to the method, two-dimensional and three-dimensional engineering constraints and geometric elements are uniformly expressed, the geometric elements are decomposed more thoroughly, and the solving scale is effectively reduced.

The application belongs to the technical field of computer aided design and artificial intelligence generated content, and relates to a CAD model design method based on a deep learning intelligent subtractive strategy, comprising the following steps: step 1: inputting description information of a target model through a user interactive interface of a CAD system, and creating basic geometric bodies and generating corresponding parameter information through deep learning analysis by the CAD system; step 2: automatically predicting and generating a cutting instruction sequence required by the target model through a deep learning network based on the basic geometric bodies and according to specified information input by a user; and step 3: sequentially extracting cutting instructions from the cutting instruction sequence, performing a single-step cutting operation, and performing legality verification, and outputting an ideal target model after the verification is passed. The application simulates physical subtractive processing logic, gets rid of the excessive dependence of a traditional sketch-stretching method on a two-dimensional sketch constraint, and significantly improves the robustness, geometric effectiveness and interactive efficiency of an intelligent generated CAD model.

The invention provides an automatic reconstruction method for an aviation three-dimensional CAD (computer aided design) model based on XML (extensible markup language), which belongs to the technical field of computer aided design and comprises the following steps: extracting geometrical characteristics, modeling history and parameter constraint information of a model by using a CATIA CAA interface, and storing the geometrical characteristics, the modeling history and the parameter constraint information in an XML format; an XML file is analyzed through a Python script, a JS modeling script suitable for a domestic CAD platform is automatically generated, and automatic and accurate reconstruction of a model in domestic CAD is achieved; according to the method, the parameterization characteristics and the modeling sequence of the original model are reserved, the data migration efficiency is remarkably improved, the problem that the models among the heterogeneous CAD systems are difficult to reuse is solved, and the method has good universality and engineering application value.

This invention discloses an automatic nesting method, manufacturing method, and system for thin plate parts based on a ship CAD system. This invention innovatively uses a "weld-then-cut" manufacturing mode on the thin plate production line. That is, firstly, a rectangular steel plate with the same dimensions as the rectangular blank of the part is obtained. The rectangular steel plate is then assembled and welded to form a whole plate. After that, the whole plate is cut as a whole to generate an assembly piece. This effectively solves the problem that the traditional thin plate segmented parts are prone to misalignment due to inconsistent specifications under the assembly coordinate.

To improve convenience of a board design support system capable of designing a board such as a switchboard.SOLUTION: In the panel design support system for designing a panel (switchboard or the like) by using a CAD system, the arrangement of electric and electronic equipment is designated so as to be overlapped with a panel attaching part to be used for attaching the electric and electronic equipment so that the panel attaching part and the electric and electronic equipment can be grouped as an aggregate.SELECTED DRAWING: Figure 1

The invention belongs to the field of computer aided design and computer aided manufacturing systems, and relates to an intelligent decision-making CAD model simplification and repair method which comprises the following steps: firstly, a user imports an original CAD entity model in a CAD system through an interactive interface of the user; then, the system detects redundant topological information existing in the CAD entity model, and the redundant topological information comprises redundant points, edges and surfaces; a reinforcement learning method is used for all the detected redundant topology problems, and an optimal cleaning sequence is generated; combining the two geometric surfaces needing to be combined in the process of removing the redundant topology according to the sequence; and finally, the merged topology is updated on the whole model. By means of the method, the problems that in traditional geometric simplification, cleaning sequence dependency is high, and geometric distortion is large can be solved, it is ensured that after the CAD model is simplified, the manifold performance and topological correctness of the final model are guaranteed, and the method is applied to subsequent grid division and precision manufacturing.

To provide a CAD system specifically designed for structural design and offering superior usability. [Solution] A CAD system A for designing structures operates on a web browser of user B's terminal C and is displayed on the screen of the terminal C. The system comprises at least a hierarchical information setting unit 10 in a hierarchical setting field displayed on the screen, in which user B can set one or more hierarchical information items that specify a level from an arbitrary reference line by input, and an editing unit 20 in a drawing field 300 displayed on the screen, in which user B can edit the arrangement of structural components on the level of the hierarchical information specified by user B from among the one or more hierarchical information items displayed in the hierarchical setting field. With this configuration, the coordinate information of the components to be placed in the drawing field related to the hierarchical information arbitrarily selected by user B from among the at least one or more hierarchical information items set by user B on the screen is automatically interpolated with numerical values ​​in the Z-axis direction corresponding to the hierarchical information.

The invention relates to the technical field of computer aided design and ship engineering, in particular to a heterogeneous CAD (computer aided design) integration-oriented ship data semantic interoperation method, which comprises the following steps of: constructing a ship product semantic ontology; obtaining a source CAD system comprising the ship body segmentation model, and calling an application program interface of the source CAD system based on the ship body segmentation model to extract original feature data; according to the ship product semantic ontology, a semantic mapping rule from source CAD system features to ontology concepts is established, and original feature data is converted into an intermediate data file through the semantic mapping rule; obtaining a target CAD system, analyzing the intermediate data file, and reconstructing a local three-dimensional model equivalent to the source CAD system in the target CAD system; performing multi-stage consistency verification on the local three-dimensional model to complete data interoperation; and the design intention is completely reserved, so that the reconstructed model has complete engineering semantics in the target CAD system and can be directly edited, and an information island is effectively broken.

This invention provides an integrated design and manufacturing process method for hydraulic support parts. The method includes: Step 1) Creating model features corresponding to the part's machining processes; Step 2) Extracting the corresponding machining process names and parameters and saving them to the model's parameters; Step 3) Automatically matching the extracted machining process names using a process route knowledge base to form a unique process route containing all main machining processes and saving it to the model's parameters; Step 4) Updating and saving the part model when modified in the CAD system; Step 5) Checking the data into the Windchill system's data pool for verification and feedback modification; and Step 6) Automatically generating the design and manufacturing process of the hydraulic support parts. This method offers advantages such as automatic calculation of main material quotas for parts, automatic creation of process routes, automatic generation of equipment and work centers, automatic calculation of working hours, high efficiency in MBD parameterization of the part's 3D model, and reusability.

The invention belongs to the technical field of computer aided design and artificial intelligence content generation, and relates to a CAD model design method based on a deep learning intelligent material reduction strategy, which comprises the following steps of: 1, inputting description information of a target model through a user interaction interface of a CAD system, the CAD system analyzes and creates a basic geometry and generates corresponding parameter information through deep learning; 2, based on the basic geometry and according to specified information input by a user, a cutting instruction sequence needed by a target model is automatically predicted and generated through a deep learning network; and 3, sequentially extracting cutting instructions from the cutting instruction sequence, executing a single-step cutting operation, performing legality verification, and cutting and outputting an ideal target model after the verification is passed. According to the method, by simulating the physical subtractive processing logic, the excessive dependence of a traditional sketch-stretching method on two-dimensional sketch constraints is eliminated, and the robustness, geometric effectiveness and interaction efficiency of the intelligent generated CAD model are remarkably improved.

A disclosed method implements: receiving, by a cloud server, unstructured computer-aided-dispatch (CAD) incident data from a CAD system corresponding to a CAD incident record for an emergency call received at an emergency communication center (ECC); performing entity extraction on the unstructured CAD incident data to generate output data; and sending the output data from the cloud-based server, to an emergency responder mobile device terminal to provide information related to the CAD incident record for the emergency call.

The subject application provides a computer-implemented method (100) and a CAD system (200) for dental prosthesis preparation. The inventors suggest to reverse a current process comprising first preparing a tooth for a dental prosthesis and then detecting the prepared edge with CAD software. In particular, in the subject application, edge preparation and tooth preparation are predefined, i.e. Prior to actual preparation of teeth for prosthetic prostheses. In practice, the new process includes first detecting a prepared edge with CAD software, and finally digitally preparing a tooth for a dental prosthesis.

This invention discloses an automated CAD drawing method and system for doors and windows based on a large language model, solving problems such as low efficiency, high reliance on experience, and poor user interaction in the process of converting hand-drawn door and window design sketches into electronic CAD drawings for door and window companies. The solution involves: using OpenCV image processing tools to identify door and window frame sketches, extracting the components and their topological relationships, and constructing a parametric model; using the drawing instruction set of the door and window CAD system and user intent as context to construct large language model prompts; using the large language model to generate the drawing instruction sequence of the door and window CAD system, inputting it into the system for execution, and drawing the electronic door and window drawings; and supporting incremental revisions through natural language interaction. This invention deeply integrates computer vision, natural language processing, and CAD operation, improving the efficiency and intelligence level of door and window design, lowering the technical threshold, and can be widely used in door and window manufacturing, architectural design, smart factories, and other fields.

A computer-implemented method and data processing system for identifying geometric features in a computer aided design (CAD) model are provided. Identification of features is based on a set of predefined conditions. Each condition is associated with a type of geometric feature and specifies a predefined threshold range of values for at least one quantity associated with the type of geometric feature. Model data for a CAD model is accessed in a CAD system. The model data is automatically evaluated in real-time to determine geometric features in the CAD model that satisfy at least one condition in the set. The geometric features that satisfy at least one condition in the set are identified in a user interface of the CAD system.

This invention relates to a system and method for inspecting the smoothness of ship hull surfaces based on a ship CAD system. The system includes a data interface module, a judgment module, a general smoothness inspection module, a ship-specific smoothness inspection module, and an output module. The system opens or imports the ship hull surface model to be inspected. If it is a hull outer shell surface, it is inspected using the ship-specific smoothness inspection module; otherwise, it is inspected using the general smoothness inspection module. Finally, the output module outputs the inspection results. This invention improves the accuracy of surface smoothness inspection by distinguishing hull surfaces according to whether they are hull outer shell surfaces and by inspecting single surfaces and multiple adjacent surfaces separately. It meets the needs of inspecting various types of surfaces and can efficiently achieve smoothness quality inspection of hull surface models, reducing rework for designers and improving work efficiency.