A design method and system for paperless manufacturing

Abstract

The application provides a design method and system for paperless manufacturing, and relates to the technical field of engineering design.The design method for paperless manufacturing comprises the following steps: according to manufacturing requirements of a product, production assembly information is marked on a three-dimensional digital model of the product to generate the three-dimensional digital model with the marking, wherein the production assembly information comprises size information and process information; the three-dimensional digital model with the marking is converted into a first three-dimensional format file and a second three-dimensional format file, wherein the process information of the product is contained in the first three-dimensional format file, and scene graph data of the product is contained in the second three-dimensional format file; the process information in the first three-dimensional format file is structuredly extracted to generate a process information file.The application avoids the tediousness and error-prone nature of design changes in traditional two-dimensional drawings, and is beneficial to improving the manufacturing efficiency of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering design, in particular to a design method and system for paperless manufacturing. BACKGROUND

[0002] In the construction process of products such as steel structure bridges, traditional two-dimensional drawings are the main carriers of design and construction information. However, with the continuous progress of technology and the continuous improvement of construction requirements, in the construction process of steel structure bridges and the like, the design intent and construction details of two-dimensional drawings are prone to misinterpretation and errors in the transmission process, and there may also be a problem of insufficient visualization, which affects manufacturing efficiency. SUMMARY

[0003] The problem to be solved by the present application is that the design intent and construction details of two-dimensional drawings are prone to misinterpretation and errors in the transmission process, and there may also be a problem of insufficient visualization, which affects manufacturing efficiency.

[0004] To solve the above problems, in a first aspect, the present application provides a design method for paperless manufacturing, comprising:

[0005] annotating production and assembly information on a three-dimensional digital model of the product according to manufacturing requirements of the product, to generate the three-dimensional digital model with annotations, wherein the production and assembly information includes size information and process information;

[0006] converting the three-dimensional digital model with annotations 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;

[0007] structurally extracting the process information in the first three-dimensional format file to generate a process information file;

[0008] 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, which is used for viewing and interaction in the production and assembly process of the product.

[0009] Optionally, the step of annotating production and assembly information on a three-dimensional digital model of the product according to manufacturing requirements of the product, to generate the three-dimensional digital model with annotations, comprises:

[0010] reading the design size of the three-dimensional digital model and the number of each part, and determining a size tolerance according to the manufacturing requirements and the design size, and annotating the size tolerance corresponding to the design size on the three-dimensional digital model.

[0011] annotating the three-dimensional digital model with machining and assembly specification data of the product under the manufacturing requirements.

[0012] Optionally, the annotating the three-dimensional digital model with machining and assembly specification data of the product under the manufacturing requirements comprises:

[0013] acquiring a pre-established process catalog, and associating the process catalog with the corresponding parts in the three-dimensional digital model according to the numbers of the parts;

[0014] and / or, acquiring a two-dimensional process file of the product, and attaching the two-dimensional process file to the positions of the corresponding parts in the three-dimensional digital model according to the numbers of the parts.

[0015] Optionally, the structured extraction of the process information in the first three-dimensional format file and the generation of a process information file comprise:

[0016] determining the graphic sets at each level in the model structure tree of the three-dimensional digital model under the first three-dimensional format file, the graphic sets at each level constituting nodes at each level of the model structure tree, identifying the attributes of the graphic sets under the nodes at each level, the attributes including size text types, size types and surface roughness;

[0017] storing and exporting the identified attributes according to a tree-shaped storage structure, to obtain the process information file.

[0018] Optionally, the integration of the process information file and the second three-dimensional format file, and the mutual correspondence of the process information and the parts of the product in the scene graph data, to generate a universal three-dimensional format file of the three-dimensional digital model comprise:

[0019] under the same integration condition, based on the same search condition, extracting the process information file, and corresponding the obtained process information and the parts in the scene graph data, and exporting as the universal three-dimensional format file.

[0020] Optionally, the extraction of the process information file under the same integration condition and based on the same search condition, and the corresponding of the read process information and the parts in the scene graph data comprise:

[0021] importing the process information file and the second three-dimensional format file into a process parameter interactive interface, to read the process information in the second three-dimensional format file and the process information file;

[0022] Under the process parameter interactive interface, according to at least one same search condition, the process information and the second three-dimensional format file are traversed, each piece of process information is made to correspond to a unique part, and each piece of process information is filled into a process information card of the corresponding part;

[0023] The process information card and the three-dimensional digital model under the second three-dimensional format file are associated and exported as the universal three-dimensional format file.

[0024] Optionally, the converting the three-dimensional digital model with annotations into a first three-dimensional format file and a second three-dimensional format file comprises:

[0025] The three-dimensional digital model with annotations is respectively exported as a 3DXML format file and a first VRML format file, wherein the first three-dimensional format file comprises the 3DXML format file, and the second three-dimensional format file comprises the first VRML format file.

[0026] Optionally, the format of the universal three-dimensional format file comprises VRML.

[0027] Optionally, before the generating the three-dimensional digital model with annotations according to the manufacturing requirements of the product, the method further comprises:

[0028] According to design data and constraint conditions, the created three-dimensional digital model is inspected to obtain the three-dimensional digital model meeting the design requirements for the annotation of the production assembly information.

[0029] The design method for paperless manufacturing provided by the application comprises the following steps: according to the manufacturing requirements of a product, production assembly information is marked on a three-dimensional digital model of the product, and the three-dimensional digital model with the marking is generated, wherein the production assembly information comprises 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, the process information in the first three-dimensional format file is extracted in a structured manner, a process information file is generated, and on the basis of providing three-dimensional guidance, traditional two-dimensional guidance information can be further generated by extracting the three-dimensional process information generated by marking, the process information file is embodied in a subsequent general three-dimensional format file, further helping a workshop worker to understand process information, the three-dimensional digital model with the marking is converted into a first three-dimensional format file and a second three-dimensional format file, wherein 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, lightweight processing of the three-dimensional digital model is realized, the process information file and the second three-dimensional format file are integrated, and the process information and each part of the product in the scene graph data correspond to each other, so as to generate a general three-dimensional format file of the three-dimensional digital model, while ensuring that a worker on site can check a three-dimensional digital model with accurate size through a mobile terminal, it is ensured that process information such as marking is not lost, a powerful guidance is provided for efficient and high-quality production and manufacturing of products such as steel bridges, and the cumbersome and error-prone design changes in traditional two-dimensional drawings are avoided, which is beneficial to improving the manufacturing efficiency of the product.

[0030] In a second aspect, the application further provides a design system for paperless manufacturing, which applies the design method for paperless manufacturing according to any one of the above.

[0031] The marking module is configured to mark 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 comprises size information and process information.

[0032] The export module is configured to convert the three-dimensional digital model with the marking into a first three-dimensional format file and a second three-dimensional format file, wherein 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.

[0033] The extraction module is configured to extract the process information in the first three-dimensional format file in a structured manner, and generate a process information file.

[0034] The association module integrates the process information file and the second three-dimensional format file, and makes 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, which is used for viewing and interaction of the product in the production and assembly process.

[0035] In a third aspect, the present application provides an electronic device, comprising a memory and a processor;

[0036] The memory is configured to store a computer program.

[0037] The processor is configured to implement the design method for paperless manufacturing when executing the computer program.

[0038] In a fourth aspect, the present application provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is configured to implement the design method for paperless manufacturing when executed by a processor.

[0039] The design system for paperless manufacturing, the electronic device and the computer readable storage medium provided by the present application have the same beneficial effects as the design method for paperless manufacturing, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 A flowchart of a design method for paperless manufacturing is shown in the embodiments of the present application;

[0041] Figure 2 An interface diagram of marking production and assembly information on a three-dimensional digital model of a product is shown in the embodiments of the present application;

[0042] Figure 3 An interface diagram of integrating a process information file and a second three-dimensional format file to generate a process information card is shown in the embodiments of the present application;

[0043] Figure 4 A structural diagram of a paperless manufacturing design system is shown in the embodiments of the present application;

[0044] Figure 5 A structural diagram of an electronic device is shown in the embodiments of the present application. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0046] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0047] In the description of the specification, the description of the terms "embodiment", "one embodiment", and "one implementation" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or implementation are included in at least one embodiment or implementation of the present application. In the specification, the illustrative description 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.

[0048] As shown in Figure 1 An embodiment of the present application provides a design method for paperless manufacturing;

[0049] The design method for paperless manufacturing comprises:

[0050] S100: According to the manufacturing requirements of the product, production assembly information is marked on the three-dimensional digital model of the product, and the three-dimensional digital model with marking is generated, wherein the production assembly information comprises size information and process information.

[0051] Specifically, before the product such as a bridge is built (produced and assembled), the pre-created three-dimensional digital model is marked according to the design drawing, and in this process, the product in the three-dimensional model can be marked by using the FTA module in CATIA, which includes size marking, tolerance marking, material identification, machining requirement and assembly information, and is roughly divided into two categories of size information and process information.

[0052] S200: The three-dimensional digital model with marking is converted 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.

[0053] Specifically, based on three-dimensional software, the three-dimensional digital model can be exported into different formats. The first three-dimensional format file emphasizes process information, which can include process pictures and process cards, etc. Therefore, the corresponding format needs to save the three-dimensional digital model while trying to save these process information. The second three-dimensional format file emphasizes scene graph data, which is used to build 3D reality. The scene graph data can represent the geometric relationship, material, texture, light, etc. of the model. Therefore, the corresponding format needs to save the three-dimensional digital model while trying to save the scene graph data.

[0054] S300: Structured extraction of the process information in the first three-dimensional format file to generate a process information file.

[0055] Specifically, the required information is extracted from the first three-dimensional format file, which can involve some important and difficult-to-process parts of the three-dimensional digital model. The form of these information is more structured, for example, the structure of XML file is very similar to the feature structure tree in three-dimensional digital model. The highly structured process information can be very conveniently stored in XML file.

[0056] S400: Integration of the process information file and the second three-dimensional format file, and correspondence of the process information and the scene graph data of each part of the product to generate a universal three-dimensional format file of the three-dimensional digital model, which is used for viewing and interaction of the product in the production and assembly process.

[0057] Specifically, after the extracted process information file and the three-dimensional digital model under the second three-dimensional format file are integrated in the same reading environment, each part is corresponded to the process information one by one. In this way, the obtained three-dimensional digital model has size annotation information and structured process information, which is convenient for viewing and interaction of the product in the production and assembly process.

[0058] In actual application, according to the manufacturing requirements of the product, production assembly information is marked 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, thereby forming a model with complete size information and process information, providing a basis for subsequent guidance of factory manufacturing, and structurally extracting the process information in the first three-dimensional format file to generate a process information file, and further generating traditional two-dimensional guidance information based on the three-dimensional guidance, the process information file is embodied in the subsequent general three-dimensional format file, further helping the workshop workers to understand the processing process information, converting the three-dimensional digital model with the marking 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, realizing lightweight processing of the three-dimensional digital model, integrating the process information file and the second three-dimensional format file, and making the process information and the scene graph data correspond to each other, to generate a general three-dimensional format file of the three-dimensional digital model, ensuring that the workers can check the three-dimensional digital model with accurate size through a mobile terminal, and ensuring that the marking and other process information are not lost, thereby providing strong guidance for efficient and high-quality production and manufacturing of steel bridges and other products, avoiding the complexity and error-proneness of design changes in traditional two-dimensional drawings, and being beneficial to improving the manufacturing efficiency of the product.

[0059] The present application is based on MBD (Model-Based Definition), which is a definition method for expressing product information in an integrated three-dimensional entity model, and uses the integrated three-dimensional entity model as the only data source for information transmission and interaction, which can improve the efficiency and accuracy of design, optimize construction process and quality control, improve information sharing and collaboration efficiency, reduce construction cost and risk, and enhance data management and analysis capabilities, etc. These advantages make the present application have important application value and development prospect in the construction process of modern steel bridges and other products.

[0060] As shown in Figure 2 As an optional embodiment of the present application, the marking of production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product to generate the three-dimensional digital model with the marking includes:

[0061] reading the design size of the three-dimensional digital model and the number of each part, and marking the size tolerance corresponding to the design size on the three-dimensional digital model according to the manufacturing requirements and the design size;

[0062] Specifically, the pre-designed design size can be directly read by three-dimensional software, the part number represents each part, and the manufacturing requirement contains the size range of the part, so that the size tolerance can be determined, and the size tolerance is labeled on the three-dimensional digital model corresponding to the model size.

[0063] The processing and assembly specification data of the product under the manufacturing requirement are labeled on the three-dimensional digital model.

[0064] 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 labeling of process information under the three-dimensional digital model.

[0065] In actual application, the three-dimensional digital model is labeled according to the design drawing. In this process, the product in the three-dimensional model can be labeled by using the FTA module in CATIA, including size labeling, tolerance labeling, material identification (such as the size, tolerance and surface processing requirement marked in the Figure 2 , processing requirement and assembly information. The size labeling includes geometric information of the product such as length, width and height. The tolerance labeling is used to label the deviation range allowed by the model size. The material identification is used to label the material type, grade and other information used by the model. The processing requirement is used to label the process requirement and processing method required in the processing of the model. The assembly information is used to label the position, direction, fitting relationship and other information in the assembly process of the model.

[0066] As shown in Figure 2 , as an optional embodiment of the application, the labeling of the processing and assembly specification data of the product under the manufacturing requirement on the three-dimensional digital model comprises:

[0067] Obtaining a pre-established process directory, and associating the process directory with the corresponding parts in the three-dimensional digital model according to the numbers of the parts;

[0068] Specifically, the process directory usually exists in the form of a table and contains information such as part number, process step, material and tool. The numbers of the parts are extracted from the process directory, and these numbers are used to match the parts in the three-dimensional digital model.

[0069] And / or, obtaining a two-dimensional process file of the product, and hanging the two-dimensional process file to the position where the corresponding part in the three-dimensional digital model is located according to the numbers of the parts.

[0070] Specifically, ensure that you have complete 2D process files beforehand, usually in DWG or image format, containing part numbers and related process information. Each 2D process file has a corresponding number. In the already positioned 3D model, attach the 2D process files according to the following steps: Select a suitable tool (such as the "Import" or "Add Attachment" function) to attach the 2D process file to the specific part (e.g., Figure 2 (The attached DWG file) Select the reference point or face of the part to ensure that the 2D file can be correctly displayed in the corresponding position of the part. Adjust the display attributes: Adjust the display attributes of the file as needed, such as transparency, size, rotation angle, etc., to ensure that the file is clearly visible in the 3D view. You can also determine the surface requirements of the parts in the 3D digital model corresponding to the surface processing requirements in the process information file according to the part number and the orientation information of the 3D digital model, and mark the surface processing requirements.

[0071] In practical applications, this embodiment associates the process catalog with the parts in the 3D digital model, which can effectively manage process information. The part number ensures accurate matching, so that each part can be associated with the corresponding process steps and requirements, reducing the risk of errors. By attaching the 2D process file to the 3D digital model or directly associating the process catalog, it is ensured that the 2D process file or process catalog can be associated with the 3D digital model, forming a 3D digital model with process information annotations.

[0072] As an optional embodiment of the present invention, the structured extraction of the process information from the first three-dimensional format file to generate a process information file includes:

[0073] Determine the graphic sets at each level in the model structure tree of the three-dimensional digital model under the first three-dimensional format file. The graphic sets at each level constitute the nodes at each level of the model structure tree. Identify the attributes of the graphic sets under each level of the nodes. The attributes include size text type, size type and surface roughness.

[0074] Specifically, the corresponding target recognition function can be found in the FTA (Functional Tolerancing & Annotation) module of the CATIA API (Application Programming Interface) secondary development environment. Then, VB programming can be used to manipulate the API function to identify and extract the nodes at all levels and their attributes in the XML model structure tree that stores the model design information output by the export module. The traversal function is called to traverse the geometric set contained under each level of node, extract parameter information, and automatically read the information and generate a file that stores the model process information according to the logical structure of the XML file, providing data support for subsequent processing.

[0075] According to the tree-shaped storage structure, the identified attribute is stored and exported, and the process information file is obtained.

[0076] Specifically, since each node in the structure tree contains certain attribute information, some define the size character size, some define the size type, whether it is a length unit or an angle unit or a surface roughness, etc., therefore, it is just exported in the form of tree-shaped storage, which also conforms to the structure of the original model structure tree, for example, exported in the form of XML file structure to obtain the process information file.

[0077] It should be noted that the logical structure of the XML file is a tree structure, which has the following characteristics:

[0078] The XML file organizes data through element nesting, forming a parent-child relationship. This hierarchical structure makes XML very suitable for representing tree-structured data. The logical structure of the XML file consists of the following parts:

[0079] ‌Declaration: Located at the top of the XML document, before the root element, used to set the basic parameters of the XML document.

[0080] ‌Element: The basic building block of the XML document, can contain text, attributes, child elements, etc.

[0081] ‌Comment: Used to add explanatory text in the XML document, which will not be parsed by the XML parser.

[0082] ‌Character reference and processing instruction: Used to handle special characters and pass instructions to the XML parser.

[0083] The characteristics of XML include:

[0084] ‌Self-explanatory: XML documents usually contain descriptions about the data, and the tag and element names clearly express the meaning of the data.

[0085] ‌Hierarchical: XML data is organized in a hierarchical structure, suitable for representing tree-structured data.

[0086] ‌Extensibility: Users can customize tags and rules for various fields.

[0087] ‌Platform-independent: XML is independent of any operating system and application, and can be exchanged and parsed on different platforms without obstacles.

[0088] As an optional embodiment of the present application, the process information file and the second three-dimensional format file are integrated, and the process information and the parts of the product in the scene graph data are corresponded to each other to generate a general three-dimensional format file of the three-dimensional digital model.

[0089] extracting the process information file based on the same search condition under the same integration condition, and corresponding the process information and each part in the scene graph data, and exporting as the general three-dimensional format file.

[0090] Specifically, under the same association condition, the process information file is extracted, and the process information 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.

[0091] As shown in Figure 3 Optionally, the extracting the process information file based on the same search condition under the same integration condition, and corresponding the process information and each part in the scene graph data comprises:

[0092] importing the process information file and the second three-dimensional format file into a process parameter interactive interface to read the process information in the process information file and the second three-dimensional format file;

[0093] Specifically, in the process parameter interactive interface developed by using VB programming language, the process information file is read and recognized, and the information is displayed on the process parameter interactive interface of design information import (for example, the interface is edited in VB6.0, which is a self-contained function of VB6.0. The main logic is to call the internal function of Catia for interaction. For example: SetCATIA = GetObject(, "CATIA.application"), and the three-dimensional model of the output second three-dimensional format file is imported into the process parameter interactive interface.

[0094] Under the process parameter interactive interface, according to at least one same search condition, the process information and the second three-dimensional format file are traversed, each piece of process information corresponds to a unique part, and each piece of process information is filled into the process information card of the corresponding part.

[0095] Specifically, after importing and reading the second three-dimensional format file and the process information file, the search condition is combined, the search condition is in turn number (such as part number, rod number and plate unit number), material, connection type and the like, and the three conditions are realized in turn. When there are different parts under the same number (three numbers are the same), the material and the connection type (such as welding type) of the part are distinguished, when corresponding to the same part, the process information is extracted and filled in the table of the prepared process information card (through secondary development), the data in the model is read out and filled into the interface table.

[0096] Correlate the process information card and the three-dimensional digital model under the second three-dimensional format file and export as the general three-dimensional format file.

[0097] Specifically, after filling the process information table, part of the process information is still reserved, the process information in the process information file structure tree is correlated with the three-dimensional model, each part is corresponded with the process information one by one, finally, the corresponding process information card and the three-dimensional digital model are exported in VRML format.

[0098] In actual application, the process information file is integrated with the VRML three-dimensional model through programmed calculation, the exported process information file is corresponded with the three-dimensional model, a new VRML three-dimensional model is exported, that is, the finally integrated general three-dimensional format file, mainly for external reader to identify, the final three-dimensional digital model can be used to express product definition information, the designer can intuitively see the structure and details of the bridge, the dependence on two-dimensional drawings is reduced, and the design intuitiveness and accuracy are improved.

[0099] As an optional embodiment of the present application, the converting the three-dimensional digital model with annotations into a first three-dimensional format file and a second three-dimensional format file comprises:

[0100] The three-dimensional digital model with annotations is respectively exported as a 3DXML format file and a first VRML format file, wherein the first three-dimensional format file comprises the 3DXML format file, and the second three-dimensional format file comprises the first VRML format file.

[0101] Specifically, the three-dimensional digital model with annotation information is respectively exported as a 3DXML and a first VRML format file in CATIA, providing data basis for subsequent, 3DXML and VRML are common lightweight model formats, wherein 3DXML saves the geometric information, product structure and process information of the model into XML form, VRML uses a scene graph data structure to construct 3D reality, the scene graph of VRML can represent the geometric relationship, material, texture, light and the like of the model, wherein the structure of the XML file is extremely similar to the feature structure tree performance form of the CATIA software, and highly structured data can be very conveniently processed, and the VRML format not only contains part geometric information, but also contains part annotation information.

[0102] As an optional embodiment of the present application, the format of the general three-dimensional format file comprises VRML, and can also comprise STEP, IGES and the like.

[0103] Specifically, the output VRML format three-dimensional model is imported into a common picture viewing software, such as Cortona 3D Viewer software on a terminal, the Cortona 3D Viewer software analyzes the input three-dimensional model, and after the analysis is completed, a three-dimensional model with process information and annotation information can be obtained on the terminal, so as to realize the construction of a steel bridge product without a drawing (i.e. without a two-dimensional drawing).

[0104] After the general three-dimensional format file is exported, Cortona 3D supports the import and export of multiple file formats, such as STEP, IGES, VRML, etc., which makes it easier and more flexible to share the model between different platforms and software, and also facilitates cooperation with other related software, thereby forming a path for real control and realizing the final landing of the application, rather than just a method.

[0105] As an optional embodiment of the application, before the production assembly information is marked on the three-dimensional digital model of the product according to the manufacturing requirements of the product to generate the three-dimensional digital model with the mark, the method further comprises:

[0106] According to the design data and the constraint condition, the created three-dimensional digital model is inspected to obtain the three-dimensional digital model meeting the design requirements, so as to provide the marking of the production assembly information.

[0107] Specifically, before modeling starts, demand analysis is needed first to clarify the purpose, requirements, constraint conditions, etc. of modeling, accurate three-dimensional modeling is performed according to the design drawing in PDF format and related design process requirements using modeling software (such as CATIA), and the quality of the model is ensured to meet the design requirements, possible problems are corrected, and the accuracy of the three-dimensional digital model is ensured. When performing inspection, the related dimensions are ensured to meet the preset accuracy, the modeling software built-in collision checking function is used to check the problems of the three-dimensional digital model, and the modified interface is waiting for manual confirmation, so as to ensure the accuracy of the three-dimensional digital model.

[0108] The method further comprises: using the pre-machining simulation function of CATIA, performing pre-machining simulation in Prismatic Machining according to the segmentation relationship of the rod and the assembly relationship between the parts, setting the machining process parameters according to the lathe machining conditions in the factory, and exporting NC code that can guide numerical control cutting. The code can be directly imported into the numerical control cutting machine tool. The pre-machining module of CATIA can select the segments according to the created overall model and perform assembly after the segments are selected.

[0109] As Figure 4As shown, the present invention also provides a design system 200 for drawing-free manufacturing, which applies the design method for drawing-free manufacturing as described in the above embodiments, including:

[0110] The annotation module 210 is used to annotate 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 annotations, wherein the production assembly information includes dimensional information and process information.

[0111] The export module 220 is used to convert the labeled 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 diagram data of the product;

[0112] Extraction module 230 is used to extract the process information from the first three-dimensional format file in a structured manner and generate a process information file;

[0113] The association module 240 is used to integrate the process information file and the second three-dimensional format file, and to make the process information correspond to each part of the product in the scene diagram data, so as to generate a general three-dimensional format file of the three-dimensional digital model. The general three-dimensional format file is used for viewing and interacting with the product during the production and assembly process.

[0114] The specific implementation method of this embodiment can also refer to the corresponding implementation method described above, and will not be described again here.

[0115] like Figure 5 As shown, an electronic device 300 provided in this embodiment of the 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 paperless manufacturing as described above when the computer program is executed.

[0116] Alternatively, 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 the computer program is executed:

[0117] According to the manufacturing requirements of the product, the production assembly information is marked on the three-dimensional digital model of the product to generate the three-dimensional digital model with annotations, wherein the production assembly information includes dimensional information and process information;

[0118] convert the three-dimensional digital model with annotations 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;

[0119] extract the process information in the first three-dimensional format file in a structured manner to generate a process information file;

[0120] 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, to generate a universal three-dimensional format file of the three-dimensional digital model, which is used for viewing and interaction of the product in the production and assembly process.

[0121] The embodiment of the present application provides a computer readable storage medium, and the storage medium stores a computer program.

[0122] In other words, a non-volatile computer readable storage medium stores a computer program.

[0123] According to the manufacturing requirements of the product, production and assembly information is annotated on the three-dimensional digital model of the product to generate the three-dimensional digital model with annotations, wherein the production and assembly information comprises size information and process information;

[0124] convert the three-dimensional digital model with annotations 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;

[0125] extract the process information in the first three-dimensional format file in a structured manner to generate a process information file;

[0126] 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, to generate a universal three-dimensional format file of the three-dimensional digital model, which is used for viewing and interaction of the product in the production and assembly process.

[0127] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing relevant hardware. The program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, storage, database or other medium used in the embodiments provided by the present application 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 but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), 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), etc.

[0128] The above description is merely that of specific embodiments of the present application, to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Accordingly, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0129] Although the present application has been disclosed as above, the protection scope of the present application is not limited to this. Those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present application, and these modifications and changes shall fall within the protection scope of the present application.

Claims

1. A design method for paperless manufacturing, characterized by, The method comprises: According to the manufacturing requirements of a product, production assembly information is marked on a three-dimensional digital model of the product, and a three-dimensional digital model with the mark is generated, wherein the production assembly information comprises size information and process information; The three-dimensional digital model with the mark is converted into a first three-dimensional format file and a second three-dimensional format file, wherein the process information of the product is contained in the first three-dimensional format file, and scene graph data of the product is contained in the second three-dimensional format file; The process information in the first three-dimensional format file is structuredly extracted, and a process information file is generated; The structured extraction of the process information in the first three-dimensional format file to generate the process information file comprises: determining each level of graphic set in a model structure tree of the three-dimensional digital model under the first three-dimensional format file, each level of the graphic set constituting each level of node of the model structure tree, identifying the attributes of the graphic set under each level of the node, the attributes comprising size text type, size type and surface roughness; storing and exporting the identified attributes according to a tree-shaped storage structure to obtain the process information file; The process information file and the second three-dimensional format file are integrated, and the process information is corresponded 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, which is used for viewing and interaction in the production and assembly process of the product; The integration of the process information file and the second three-dimensional format file, and the correspondence of the process information to each part of the product in the scene graph data to generate the universal three-dimensional format file of the three-dimensional digital model comprises: Under the same integration condition, the process information file is extracted based on the same search condition, and the obtained process information and each part of the product in the scene graph data are corresponded and exported as the universal three-dimensional format file; The extraction of the process information file under the same integration condition based on the same search condition, and the correspondence of the read process information to each part of the product in the scene graph data comprises: importing the process information file and the second three-dimensional format file into a process parameter interactive interface to read the process information in the second three-dimensional format file and the process information file; under the process parameter interactive interface, each piece of process information is corresponded to a unique part according to at least one same search condition, and each piece of process information is filled into a process information card of the corresponding part; the process information card and the three-dimensional digital model under the second three-dimensional format file are associated and exported as the universal three-dimensional format file.

2. The design method for paperless manufacturing according to claim 1, wherein, The marking of production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product to generate the three-dimensional digital model with the mark comprises: reading design sizes of the three-dimensional digital model, numbers of the parts, and determining size tolerances according to the manufacturing requirements and the design sizes, and marking the size tolerances corresponding to the design sizes on the three-dimensional digital model; marking processing and assembly specification data of the product under the manufacturing requirements on the three-dimensional digital model.

3. The design method for paperless manufacturing according to claim 2, wherein, The marking of 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 parts in the three-dimensional digital model according to the numbers of the parts; and / or, obtaining a two-dimensional process file of the product, and hanging the two-dimensional process file to positions where the parts are located in the three-dimensional digital model according to the numbers of the parts; wherein the processing and assembly specification data comprises the process catalog and the two-dimensional process file.

4. The design method for paperless manufacturing according to claim 1 or 2 or 3, characterized by, The conversion of the three-dimensional digital model with the mark into a first three-dimensional format file and a second three-dimensional format file comprises: exporting the three-dimensional digital model with the mark into a 3DXML format file and a first VRML format file respectively, wherein the first three-dimensional format file comprises the 3DXML format file, and the second three-dimensional format file comprises the first VRML format file.

5. The design method for paperless manufacturing of claim 1, wherein, The universal three-dimensional format file comprises a second VRML format file.

6. The design method for paperless manufacturing according to claim 1, wherein, Before the marking of the production assembly information on the three-dimensional digital model of the product according to the manufacturing requirements of the product, and the generation of the three-dimensional digital model with the mark, the method further comprises: verifying and modifying the created three-dimensional digital model according to design data and constraint conditions, to obtain the three-dimensional digital model meeting the design requirements, for the marking of the production assembly information.

7. A design system for paperless manufacturing, characterized by, The design method for paperless manufacturing according to any one of claims 1-6 comprises: a marking module for marking production assembly information on a three-dimensional digital model of a product according to manufacturing requirements of the product, to generate the three-dimensional digital model with the mark, wherein the production assembly information comprises size information and process information; an exporting module for converting the three-dimensional digital model with the mark 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; an extracting module for structurally extracting the process information in the first three-dimensional format file, to generate a process information file; an associating module for 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, which is used for viewing and interaction in the production and assembly process of the product.

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