Design method and system for drawing-free manufacturing

Abstract

The invention provides a design method and system for non-drawing manufacturing, and relates to the technical field of engineering design, and the design method for non-drawing manufacturing comprises the steps: marking production and assembly information on a three-dimensional digital model of a product according to the manufacturing requirements of the product, generating the three-dimensional digital model with a mark, wherein the production assembly information comprises size information and process information; the three-dimensional digital model with the label is converted into a first three-dimensional format file and a second three-dimensional format file, the first three-dimensional format file comprises the process information of the product, and the second three-dimensional format file comprises scene graph data of the product; and the process information in the first three-dimensional format file is extracted in a structured mode, and a process information file is generated. According to the method, complexity and error-prone performance of design change in a traditional two-dimensional drawing are avoided, and the manufacturing efficiency of products can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering design, and in particular to a design method and system for drawing-free manufacturing. Background Art

[0002] In the construction process of steel structure bridges and other products, traditional two-dimensional drawings are the main carrier of design and construction information. However, with the continuous advancement of technology and the continuous increase in construction needs, in the construction process of steel structure bridges and other products, the design intent and construction details of two-dimensional drawings are prone to misunderstandings and errors in the transmission process, and there may also be problems with insufficient visualization, which affects manufacturing efficiency. Summary of the invention

[0003] Problem to be solved by the present invention: Misunderstanding and errors are prone to occur during the transmission of design intent and construction details of two-dimensional drawings, which leads to insufficient visualization and affects manufacturing efficiency.

[0004] To solve the above problems, in a first aspect, the present invention provides a design method for drawingless manufacturing, comprising: According to the manufacturing requirements of the product, marking the production assembly information on the three-dimensional digital model of the product to generate the three-dimensional digital model with the marking, wherein the production assembly information includes size information and process information; Converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains scene graph data of the product; Structurally extracting the process information in the first three-dimensional format file to generate a process information file; The process information file and the second three-dimensional format file are integrated, and the process information is made to correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

[0005] Optionally, the step of marking the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and generating the three-dimensional digital model with the marking includes: Reading the design dimensions of the three-dimensional digital model and the numbers of the parts, determining the dimensional tolerance according to the manufacturing requirements and the design dimensions, and marking the dimensional tolerance and the design dimensions on the three-dimensional digital model in correspondence; The processing and assembly specification data of the product under the manufacturing requirements are marked on the three-dimensional digital model.

[0006] Optionally, marking the processing and assembly specification data of the product under the manufacturing requirements on the three-dimensional digital model includes: Obtaining a pre-established process catalog, and associating the process catalog with the corresponding part in the three-dimensional digital model according to the number of each part; And / or, obtaining a two-dimensional process file of the product, and according to the serial number of each of the parts, attaching the two-dimensional process file to the location of the corresponding part in the three-dimensional digital model.

[0007] Optionally, the structured extraction of the process information in the first three-dimensional format file to generate a process information file includes: Determine the graphic sets at various levels in the model structure tree of the three-dimensional digital model in the first three-dimensional format file, the graphic sets at various levels constitute the nodes at various levels of the model structure tree, and identify the attributes of the graphic sets under the nodes at various levels, the attributes including dimension text type, dimension type and surface roughness; According to the tree-like storage structure, the identified attributes are stored and exported to obtain the process information file.

[0008] Optionally, the step of integrating the process information file and the second three-dimensional format file and making the process information correspond to each part of the product in the scene graph data to generate a universal three-dimensional format file of the three-dimensional digital model comprises: Under the same integration condition and based on the same search condition, the process information file is extracted, and the obtained process information is matched with each of the parts in the scene graph data, and exported as the universal three-dimensional format file.

[0009] Optionally, under the same integration condition and based on the same search condition, extracting the process information file, and making correspondence between the read process information and each of the parts in the scene graph data comprises: Importing the process information file and the second three-dimensional format file into the process parameter interaction interface to read the process information in the second three-dimensional format file and the process information file; In the process parameter interactive interface, according to at least one identical search condition, traverse the process information and the second three-dimensional format file, make each piece of the process information correspond to a unique part, and fill each piece of the process information into the process information card of the corresponding part; The process information card and the three-dimensional digital model in the second three-dimensional format file are associated and exported as the general three-dimensional format file.

[0010] Optionally, converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file comprises: The three-dimensional digital model with annotations is exported as a 3DXML format file and a first VRML format file respectively, wherein the first three-dimensional format file includes the 3DXML format file, and the second three-dimensional format file includes the first VRML format file.

[0011] Optionally, the format of the universal three-dimensional format file includes VRML.

[0012] Optionally, before marking the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product and generating the three-dimensional digital model with the marking, the method further includes: The created three-dimensional digital model is checked according to the design data and constraint conditions to obtain the three-dimensional digital model that meets the design requirements for the annotation of the production assembly information.

[0013] The design method for drawingless manufacturing provided by the present invention marks the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and generates the three-dimensional digital model with annotations, wherein the production assembly information includes size information and process information, thereby forming a model with complete size information and process information, providing a basis for subsequent guidance of factory manufacturing, and structured extraction of the process information in the first three-dimensional format file to generate a process information file. By extracting the three-dimensional process information generated by the annotation, on the basis of providing three-dimensional guidance, it can further assist in generating traditional two-dimensional guidance information. The process information file is embodied in the subsequent general three-dimensional format file, further helping workshop workers to understand the processing technology information, and converting the three-dimensional digital model with annotations into the first A three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains the scene graph data of the product, so as to realize lightweight processing of the three-dimensional digital model, integrate the process information file and the second three-dimensional format file, and make the process information correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, ensure that on-site workers can view the three-dimensional digital model with accurate size through the mobile terminal, and ensure that process information such as annotation is not lost, so as to provide powerful guidance for the efficient and high-quality production and manufacturing completion of products such as steel bridges, avoid the cumbersomeness and error-proneness of design changes in traditional two-dimensional drawings, and be conducive to improving the manufacturing efficiency of products.

[0014] In a second aspect, the present invention further provides a design system for drawingless manufacturing, applying any of the above-mentioned design methods for drawingless manufacturing, including: A marking module, used to mark the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and generate the three-dimensional digital model with the marking, wherein the production assembly information includes size information and process information; An export module, used for converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains the scene graph data of the product; An extraction module, used for structurally extracting the process information in the first three-dimensional format file to generate a process information file; An association module is used to integrate the process information file and the second three-dimensional format file, and make the process information correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

[0015] In a third aspect, the present invention provides an electronic device, including a memory and a processor; The memory is used to store computer programs; The processor is used to implement the design method for drawingless manufacturing as described in the first aspect when executing the computer program.

[0016] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the design method for drawingless manufacturing as described in the first aspect is implemented.

[0017] The design system, electronic device and computer-readable storage medium for drawingless manufacturing provided by the present invention have the same beneficial effects as the design method for drawingless manufacturing relative to the prior art, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic flow chart of a design method for drawing-free manufacturing in an embodiment of the present invention is shown; Figure 2 A schematic diagram of an interface for marking production assembly information on a three-dimensional digital model of a product in an embodiment of the present invention is shown; Figure 3A schematic diagram of an interface for integrating a process information file and a second three-dimensional format file to generate a process information card in an embodiment of the present invention is shown; Figure 4 A schematic diagram of the structure of a paperless manufacturing design system in an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of an electronic device in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0021] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0022] like Figure 1 As shown, an embodiment of the present invention proposes a design method for drawing-free manufacturing; The design method for drawing-free manufacturing comprises: S100: marking production assembly information on the three-dimensional digital model of the product according to manufacturing requirements of the product, and generating the three-dimensional digital model with markings, wherein the production assembly information includes size information and process information.

[0023] Specifically, before the construction (production and assembly) of products such as bridges, the pre-created three-dimensional digital model is annotated according to the design drawings. In this process, the FTA module in CATIA can be used to annotate the products in the three-dimensional model, which includes dimension marking, tolerance marking, material identification, processing requirements and assembly information, which can be roughly divided into two categories: dimension information and process information.

[0024] S200: Convert the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains scene graph data of the product.

[0025] Specifically, based on the three-dimensional software, the three-dimensional digital model can be exported into different formats. The first three-dimensional format file emphasizes the process information, which may include process pictures and process cards, etc. Therefore, the corresponding format is required to preserve the process information as much as possible while saving the three-dimensional digital model. The second three-dimensional format file emphasizes the scene graph data, and the scene graph data is used to construct a 3D reality. The scene graph data can represent the model's geometric relationship, material, texture, light, etc. Therefore, the corresponding format is required to preserve the scene graph data as much as possible while saving the three-dimensional digital model.

[0026] S300: Structurally extracting the process information in the first three-dimensional format file to generate a process information file.

[0027] Specifically, the required information is extracted from the first three-dimensional format file, which may involve some important and difficult-to-process parts in the three-dimensional digital model. The form of this information is relatively structured. For example, the structure of the XML file is very similar to the feature structure tree in the three-dimensional digital model. XML files can be used to store highly structured process information very conveniently.

[0028] S400: Integrate the process information file and the second three-dimensional format file, and make the process information correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

[0029] Specifically, the extracted process information file and the three-dimensional digital model in the second three-dimensional format file are integrated in the same reading environment, so that each part corresponds to the process information one by one. In this way, the obtained three-dimensional digital model has dimensioning information and structured process information, which is convenient for viewing and interaction of the product during the production and assembly process.

[0030] When this embodiment is applied in practice, according to the manufacturing requirements of the product, the production assembly information is annotated on the three-dimensional digital model of the product to generate the annotated three-dimensional digital model, wherein the production assembly information includes size information and process information, thereby forming a model with complete size information and process information, providing a basis for subsequent guidance of factory manufacturing, and structured extraction of the process information in the first three-dimensional format file to generate a process information file. By extracting the three-dimensional process information generated by the annotation, on the basis of providing three-dimensional guidance, it is possible to further assist in generating traditional two-dimensional guidance information. The process information file is embodied in the subsequent general three-dimensional format file, further helping workshop workers to understand the processing technology information, and converting the annotated three-dimensional digital model into the first three-dimensional format file. A three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains the scene graph data of the product, so as to realize lightweight processing of the three-dimensional digital model, integrate the process information file and the second three-dimensional format file, and make the process information correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, while ensuring that on-site workers can view the three-dimensional digital model with accurate size through the mobile terminal, ensuring that process information such as annotation is not lost, providing powerful guidance for the efficient and high-quality production and manufacturing of products such as steel bridges, avoiding the cumbersomeness and error-proneness of design changes in traditional two-dimensional drawings, and being conducive to improving the manufacturing efficiency of products.

[0031] The present invention is based on MBD (Model-Based Definition), a definition method that uses an integrated three-dimensional solid model to fully express product information. The integrated three-dimensional solid model is used as the only data source for information transmission and interaction. It can improve the efficiency and accuracy of design, optimize construction process and quality control, improve information sharing and collaboration efficiency, reduce construction costs and risks, and enhance data management and analysis capabilities. These advantages make the present invention have important application value and development prospects in the construction process of modern steel bridges and other products.

[0032] like Figure 2 As shown, as an optional embodiment of the present invention, the step of marking the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and generating the three-dimensional digital model with the marking includes: Reading the design dimensions of the three-dimensional digital model and the numbers of the parts, determining the dimensional tolerance according to the manufacturing requirements and the design dimensions, and marking the dimensional tolerance and the design dimensions on the three-dimensional digital model in correspondence; Specifically, the pre-designed design dimensions can be directly read through the three-dimensional software, the part number represents each part, and the manufacturing requirements include the range of part sizes, so that the dimensional tolerance can be determined, and the dimensional tolerance and the model size are marked on the three-dimensional digital model accordingly.

[0033] The processing and assembly specification data of the product under the manufacturing requirements are marked on the three-dimensional digital model.

[0034] Specifically, the processing and assembly specification data represents a process file in the processing or assembly process, and the file is matched with the three-dimensional digital model to realize the marking of process information under the three-dimensional digital model.

[0035] When this embodiment is applied in practice, the three-dimensional digital model is annotated according to the design drawing. In this process, the FTA module in CATIA can be used to annotate the product in the three-dimensional model, including dimensioning, tolerance annotation, material identification (such as Figure 2 The dimensions, tolerances and surface processing requirements marked in it), processing requirements, assembly information, where the dimension marking includes the length, width, height and other geometric information of the product; the tolerance marking is used to mark the allowable deviation range of the model size; the material identification is used to mark the type and brand of material used in the model; the processing requirements are used to mark the process requirements and processing methods that the model needs to follow during the processing; the assembly information is used to mark the position, direction, matching relationship and other information of the model during the assembly process.

[0036] like Figure 2 As shown, as an optional embodiment of the present invention, marking the processing and assembly specification data of the product under the manufacturing requirements on the three-dimensional digital model includes: Obtaining a pre-established process catalog, and associating the process catalog with the corresponding part in the three-dimensional digital model according to the number of each part; Specifically, the process catalog, which usually exists in a table form, contains information such as part numbers, process steps, materials, tools, etc. The numbers of each part are extracted from the process catalog, and these numbers will be used to match the parts in the three-dimensional digital model.

[0037] And / or, obtaining a two-dimensional process file of the product, and according to the serial number of each of the parts, attaching the two-dimensional process file to the location of the corresponding part in the three-dimensional digital model.

[0038] Specifically, ensure that you have obtained a complete 2D process file in advance, usually in DWG format or image format, which contains the part number and related process information. Each 2D process file has a corresponding number. In the located 3D model, follow the steps below to attach the 2D process file: Select the appropriate tool (such as "Import" or "Add Attachment" function), attach the 2D process file to a specific part (such as Figure 2 ), select the reference point or face of the part to ensure that the two-dimensional file can be correctly displayed at the corresponding position of the part, and adjust the display properties: adjust the display properties of the file as needed, such as transparency, size, rotation angle, etc., to ensure that the file is clearly visible in the three-dimensional view. You can also determine the surface requirements of the parts in the three-dimensional digital model corresponding to the surface processing requirements in the process information file according to the number of each part and the orientation information of the three-dimensional digital model, and mark the surface processing requirements.

[0039] When this embodiment is applied in practice, the process catalog is associated with the parts in the three-dimensional digital model, which can effectively manage the process information, ensure accurate matching through part numbering, so that each part can be associated with the corresponding process steps and requirements, reduce the risk of errors, and attach the two-dimensional process file to the three-dimensional digital model or directly associate the process catalog to ensure that the two-dimensional process file or process catalog can be associated with the three-dimensional digital model to form a three-dimensional digital model with process information annotations.

[0040] As an optional embodiment of the present invention, the structured extraction of the process information in the first three-dimensional format file to generate a process information file includes: Determine the graphic sets at various levels in the model structure tree of the three-dimensional digital model in the first three-dimensional format file, the graphic sets at various levels constitute the nodes at various levels of the model structure tree, and identify the attributes of the graphic sets under the nodes at various levels, the attributes including dimension text type, dimension type and surface roughness; Specifically, you can find the corresponding target recognition function under the FTA (Functional Tolerancing & Annotation) module in the API (application programming interface) secondary development environment of CATIA, and then manipulate the API function through VB programming to identify and extract the nodes and node attributes at all levels in the XML model structure tree that stores the model design information output by the export module, call the traversal function to traverse the geometric graphics set contained in the nodes at all levels, extract parameter information, and generate a file that stores the model process information by automatically reading the information and following the logical structure of the XML file, providing data support for the follow-up.

[0041] According to the tree-like storage structure, the identified attributes are stored and exported to obtain the process information file.

[0042] Specifically, since each node in the structure tree contains certain attribute information, some defines the dimension text size, some defines the dimension type, whether it is a length unit or an angle unit or a surface roughness, etc., it is just right to export it in the form of a tree structure storage, which is also in line with the structure of the original model structure tree. For example, it can be exported in an XML file structure to obtain a process information file.

[0043] It should be noted that the logical structure of the XML file is a tree structure, which has the following characteristics: XML files organize data by nesting elements to form a parent-child relationship. This hierarchical structure makes XML very suitable for representing tree-structured data. The logical structure of an XML file consists of the following parts: Declaration: Located at the top of the XML document, before the root element, it is used to set the basic parameters of the XML document.

[0044] ‌Element‌: The basic building block of an XML document, which can contain text, attributes, sub-elements, etc.

[0045] ‌Comments‌: Used to add descriptive text to an XML document and will not be parsed by the XML parser.

[0046] ‌Character References and Processing Instructions‌: Used to handle special characters and pass instructions to the XML parser.

[0047] Features of XML include: ‌Self-explanatory‌: XML documents usually contain descriptions about the data, and tags and element names clearly express the meaning of the data.

[0048] ‌Hierarchical‌: XML data is organized in a hierarchical manner and is suitable for representing tree-structured data.

[0049] ‌Extensibility‌: Users can customize tags and rules to apply to various fields.

[0050] ‌Platform-independent‌: XML is independent of any operating system and application and can be exchanged and parsed seamlessly on different platforms‌.

[0051] As an optional embodiment of the present invention, the step of integrating the process information file and the second three-dimensional format file and making the process information correspond to each part of the product in the scene graph data to generate a universal three-dimensional format file of the three-dimensional digital model includes: Under the same integration condition and based on the same search condition, the process information file is extracted, and the obtained process information is matched with each of the parts in the scene graph data, and exported as the universal three-dimensional format file.

[0052] Specifically, the same association condition means that under the same reading environment, after the process information file is extracted, it can be intuitively displayed in the form of a card, so that the displayed process information corresponds to the corresponding part view in the second three-dimensional format file.

[0053] like Figure 3 As shown, optionally, under the same integration condition and based on the same search condition, extracting the process information file, and making correspondence between the read process information and each of the parts in the scene graph data includes: Importing the process information file and the second three-dimensional format file into the process parameter interaction interface to read the process information in the second three-dimensional format file and the process information file; Specifically, in the process parameter interaction interface developed using the VB programming language, the process information file is read and identified, and the information is displayed on the process parameter interaction interface where the design information is imported (for example, the interface is edited in VB6.0, which is a built-in function of VB6.0. The main logic is to call Catia's internal functions for interaction. For example: SetCATIA = GetObject(, "CATIA.application"), and at the same time, the three-dimensional model of the output second three-dimensional format file is imported into the process parameter interaction interface.

[0054] In the process parameter interactive interface, according to at least one identical search condition, traverse the process information and the second three-dimensional format file, make each piece of the process information correspond to a unique part, and fill each piece of the process information into the process information card of the corresponding part; Specifically, after importing and reading the second three-dimensional format file and the process information file, combined with the search conditions, the search conditions are number (such as part number, rod number and plate unit number), material, connection type, etc., and the three conditions can be realized in sequence. When there are different parts with the same number (all three numbers are the same), they are distinguished by the material and connection type (such as welding type) of the parts. When corresponding to the same part, the process information is extracted and filled in the table of the produced process information card (through secondary development), and the data in the model is read out and filled in the interface table.

[0055] The process information card and the three-dimensional digital model in the second three-dimensional format file are associated and exported as the general three-dimensional format file.

[0056] Specifically, after filling in the process information form, some process information is still retained, and the process information in the process information file structure tree is matched with the three-dimensional model so that each component corresponds to the process information one by one. Finally, the corresponding process information card and three-dimensional digital model are exported in VRML format.

[0057] When this embodiment is applied in practice, the process information file is integrated with the VRML three-dimensional model through programmatic calculation, so that the exported process information file corresponds to the three-dimensional model, and a new VRML three-dimensional model is exported, that is, the final integrated file in the universal three-dimensional format, which is mainly used for external readers to identify. The final three-dimensional digital model can be used to express product definition information, and designers can intuitively see the structure and details of the bridge, reducing dependence on two-dimensional drawings and improving the intuitiveness and accuracy of the design.

[0058] As an optional embodiment of the present invention, converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file comprises: The three-dimensional digital model with annotations is exported as a 3DXML format file and a first VRML format file respectively, wherein the first three-dimensional format file includes the 3DXML format file, and the second three-dimensional format file includes the first VRML format file.

[0059] Specifically, in CATIA, the three-dimensional digital model with annotation information is exported as 3DXML and VRML format files respectively to provide a data basis for the follow-up. 3DXML and VRML are more common lightweight model formats. 3D XML saves the model's geometric information, product structure and process information in XML format. VRML uses a scene graph data structure to construct a 3D reality. The VRML scene graph can represent the model's geometric relationship, material, texture, light, etc. Among them, the structure of the XML file is very similar to the feature structure tree expression of CATIA software, and can very conveniently process highly structured data. The VRML format not only contains part geometry information, but also some annotation information.

[0060] As an optional embodiment of the present invention, the format of the universal three-dimensional format file includes VRML, and may also include STEP, IGES and the like.

[0061] Specifically, the output three-dimensional model in VRML format is imported into common drawing viewing software, such as Cortona3D Viewer software on the terminal. Cortona 3D Viewer software parses the input three-dimensional model. After the parsing is completed, a three-dimensional model with process information and annotation information can be obtained on the terminal to realize the drawing-free (i.e., no two-dimensional drawing is required) construction of products such as steel bridges.

[0062] After exporting the general 3D format file, Cortona 3D supports the import and export of multiple file formats, such as STEP, IGES, VRML, etc. This makes it easier and more flexible to share models between different platforms and software, and also facilitates collaboration with other related software, thus forming a path for realistic controls and realizing the ultimate implementation of the present invention, rather than just a method.

[0063] As an optional embodiment of the present invention, the step of marking the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and before generating the three-dimensional digital model with the marking, further includes: The created three-dimensional digital model is checked according to the design data and constraint conditions to obtain the three-dimensional digital model that meets the design requirements for the annotation of the production assembly information.

[0064] Specifically, before modeling begins, it is necessary to first conduct a demand analysis to clarify the purpose, requirements, constraints, etc. of modeling, and use modeling software (such as CATIA) to perform accurate 3D modeling based on design drawings in PDF and other formats and related design process requirements, and ensure that the quality of the model meets the design requirements, correct possible problems, and ensure the accuracy of the 3D digital model. When inspecting, first ensure that the relevant dimensions meet the preset accuracy, use the collision check function of the modeling software to check the problems of the 3D digital model, and make modifications, and wait for manual confirmation of the modified interface to ensure the accuracy of the 3D digital model.

[0065] The method also includes: utilizing the pre-processing simulation function of CATIA to perform pre-processing simulation in Prismatic Machining according to the segmentation relationship of the rods and the assembly relationship between the parts, setting the processing parameters according to the lathe processing conditions in the factory, and exporting NC codes that can guide CNC cutting. This code can be directly imported into the CNC cutting machine. The pre-processing module of CATIA can manually select segments and assemble them according to the created overall model.

[0066] like Figure 4As shown, the present invention further provides a design system 200 for drawing-free manufacturing, which uses the design method for drawing-free manufacturing described in the above embodiment, including: The marking module 210 is used to mark the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and generate the three-dimensional digital model with the marking, wherein the production assembly information includes size information and process information; An export module 220 is used to convert the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains the scene graph data of the product; An extraction module 230, configured to structurally extract the process information in the first three-dimensional format file to generate a process information file; The association module 240 is used to integrate the process information file and the second three-dimensional format file, and make the process information correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

[0067] The specific implementation of this embodiment can also refer to the corresponding implementation method mentioned above, which will not be described again here.

[0068] like Figure 5 As shown, an electronic device 300 provided by an embodiment of the present invention includes a memory 310 and a processor 320; the memory 310 is used to store a computer program; the processor 320 is used to implement the design method for drawing-free manufacturing as described above when executing the computer program.

[0069] In other words, an electronic device 300 includes a memory 310 and a processor 320 coupled to the memory 310; the memory 310 is configured to store a computer program; and the processor 320 is configured to perform the following operations when executing the computer program: According to the manufacturing requirements of the product, marking the production assembly information on the three-dimensional digital model of the product to generate the three-dimensional digital model with the marking, wherein the production assembly information includes size information and process information; Converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains scene graph data of the product; Structurally extracting the process information in the first three-dimensional format file to generate a process information file; The process information file and the second three-dimensional format file are integrated, and the process information is made to correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

[0070] An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the design method for drawing-free manufacturing as described above is implemented.

[0071] In other words, a non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor performs the following operations: According to the manufacturing requirements of the product, marking the production assembly information on the three-dimensional digital model of the product to generate the three-dimensional digital model with the marking, wherein the production assembly information includes size information and process information; Converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains scene graph data of the product; Structurally extracting the process information in the first three-dimensional format file to generate a process information file; The process information file and the second three-dimensional format file are integrated, and the process information is made to correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

[0072] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0073] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

[0074] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A design method for drawingless manufacturing, characterized in that: include: According to the manufacturing requirements of the product, marking the production assembly information on the three-dimensional digital model of the product to generate the three-dimensional digital model with the marking, wherein the production assembly information includes size information and process information; Converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains scene graph data of the product; Structurally extracting the process information in the first three-dimensional format file to generate a process information file; The process information file and the second three-dimensional format file are integrated, and the process information is made to correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

2. The design method for drawingless manufacturing according to claim 1, characterized in that: The step of marking the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and generating the three-dimensional digital model with the marking includes: Reading the design dimensions of the three-dimensional digital model and the numbers of the parts, determining the dimensional tolerance according to the manufacturing requirements and the design dimensions, and marking the dimensional tolerance and the design dimensions on the three-dimensional digital model in correspondence; The processing and assembly specification data of the product under the manufacturing requirements are marked on the three-dimensional digital model.

3. The design method for drawingless manufacturing according to claim 2, characterized in that: The step of marking the processing and assembly specification data of the product under the manufacturing requirements on the three-dimensional digital model comprises: Obtaining a pre-established process catalog, and associating the process catalog with the corresponding part in the three-dimensional digital model according to the number of each part; and / or, obtaining a two-dimensional process file of the product, and attaching the two-dimensional process file to the corresponding position of the part in the three-dimensional digital model according to the number of each part; Wherein, the processing and assembly specification data includes the process catalog and the two-dimensional process file.

4. The design method for drawingless manufacturing according to any one of claims 1 to 3, characterized in that: The structured extraction of the process information in the first three-dimensional format file to generate a process information file includes: Determine the graphic sets at various levels in the model structure tree of the three-dimensional digital model in the first three-dimensional format file, the graphic sets at various levels constitute the nodes at various levels of the model structure tree, and identify the attributes of the graphic sets under the nodes at various levels, the attributes including dimension text type, dimension type and surface roughness; According to the tree-like storage structure, the identified attributes are stored and exported to obtain the process information file.

5. The design method for drawingless manufacturing according to claim 1, characterized in that: The step of integrating the process information file and the second three-dimensional format file and making the process information correspond to each part of the product in the scene graph data to generate a universal three-dimensional format file of the three-dimensional digital model includes: Under the same integration condition and based on the same search condition, the process information file is extracted, and the obtained process information is matched with each of the parts in the scene graph data, and exported as the universal three-dimensional format file.

6. The design method for drawingless manufacturing according to claim 5, characterized in that: The extracting of the process information file under the same integration condition and based on the same search condition, and matching the read process information with each of the parts in the scene graph data comprises: Importing the process information file and the second three-dimensional format file into the process parameter interaction interface to read the second three-dimensional format file and the process information in the process information file; In the process parameter interactive interface, according to at least one identical search condition, traverse the process information and the second three-dimensional format file, make each piece of the process information correspond to a unique part, and fill each piece of the process information into the process information card of the corresponding part; The process information card and the three-dimensional digital model in the second three-dimensional format file are associated and exported as the general three-dimensional format file.

7. The design method for drawingless manufacturing according to claim 1 or 2 or 3 or 5 or 6, characterized in that: The converting of the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file comprises: The three-dimensional digital model with annotations is exported as a 3DXML format file and a first VRML format file respectively, wherein the first three-dimensional format file includes the 3DXML format file, and the second three-dimensional format file includes the first VRML format file.

8. The design method for drawingless manufacturing according to claim 1, characterized in that: The general three-dimensional format file includes a second VRML format file.

9. The design method for drawingless manufacturing according to claim 1, characterized in that: Before marking the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product and generating the three-dimensional digital model with the marking, the method further includes: According to the design data and constraint conditions, the created three-dimensional digital model is checked and modified to obtain the three-dimensional digital model that meets the design requirements for the annotation of the production assembly information.

10. A design system for drawingless manufacturing, characterized in that: The design method for drawingless manufacturing according to any one of claims 1 to 9 is applied, comprising: A marking module, used to mark the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and generate the three-dimensional digital model with the marking, wherein the production assembly information includes size information and process information; An export module, used for converting the annotated three-dimensional digital model into a first three-dimensional format file and a second three-dimensional format file, wherein the first three-dimensional format file contains the process information of the product, and the second three-dimensional format file contains the scene graph data of the product; An extraction module, used for structurally extracting the process information in the first three-dimensional format file to generate a process information file; An association module is used to integrate the process information file and the second three-dimensional format file, and make the process information correspond to each part of the product in the scene graph data, so as to generate a universal three-dimensional format file of the three-dimensional digital model, and the universal three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

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