A method for automatically generating a non-fixed-length standard part process

Abstract

This invention provides a method for automatically generating processes for standard parts of variable length. By uniformly planning the parts and components of standard mechanisms in a product, a knowledge base for automated design rules, a knowledge base for automated design process routes, and a calculation model for automated design time of standard parts are established. Each type of part and component in the knowledge base for automated design rules is dynamically matched with the process route templates and time calculation models in the knowledge base for automated design process routes and the calculation model for automated design time of standard parts. In application, the appropriate process route template and corresponding time information can be selected in real time according to changes in product parameters, realizing automated design and synchronous updating of standard part processes.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology, and more specifically, to a method for automatically generating processes for standard parts of variable length. Background Technology

[0002] With the digital transformation of the manufacturing industry, higher requirements are placed on the accuracy and efficiency of process routes, procedures, processing equipment, and working hours in process technology data.

[0003] Traditional process creation methods typically involve process engineers manually selecting appropriate parts, component process templates, and processing equipment in process design software based on the graphic features, dimensions, materials, and specifications of the designed engineering drawings. Afterward, they calculate the main material quota, process time, and generate process cards to complete the process design work. However, the efficiency and quality of process design cannot be guaranteed.

[0004] Chinese invention patent "A Process Design Method and System Based on Structured Process Model and Knowledge-Driven Approach" (application number: 202510308261.8) was published on March 17, 2025. This invention patent, based on a structured process model and knowledge-driven approach, constructs a structured process business model by objectifying process design objectives and production preparation elements. Based on this model, it defines typical process procedures and application parameters using scalable classification characteristics and combination mechanisms, constructs a knowledge-driven process generation engine, and defines comprehensive knowledge application rules based on specific target process designs, combined with the structured process business model. Using these comprehensive knowledge application rules, multiple schemes and computational configurations are performed within the knowledge-driven process generation engine. Based on the results of these multiple schemes and computational configurations, the process design is automatically generated, and the final process scheme is output.

[0005] This solution has the following two drawbacks: 1. The process design fails to link with the design model and drawing information, posing a risk of untimely process changes after design changes. 2. The process design requires human-computer interaction to confirm process parameter information, failing to completely eliminate manual intervention and resulting in a low degree of automation.

[0006] In order to solve the above problems, people have been seeking an ideal technological solution. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a method for automatically generating processes for variable-length standard parts that can analyze part features, automatically match process templates and parameters, and synchronously update process templates and parameters when design changes occur.

[0008] To achieve the above objectives, the technical solution adopted by this invention is: a method for automatically generating processes for variable-length standard parts, comprising the following steps: Establish a knowledge base for automated design rules for standard parts: Standard drawing numbers are used to uniformly plan the parts and components of standard mechanisms in the product, sort out all the dimensional information of the parts and components, and clearly divide the dimensional information into variable parameters and fixed parameters. The variable parameters are expressed by functional relationships and associated with the product name. Further refine the names, parameters, drawing number parsing rules, and process template numbers corresponding to standard drawing numbers as the basic components of the knowledge base of the standard parts automated design rule table; Establish a knowledge base for automated design process route templates for standard parts: Create process route templates for each type of part and component under all possible conditions based on the standard drawing number, and number the created process route templates. The drawing number parsing rules in the standard parts automated design rule table knowledge base are introduced to set parameter relationship conditions, and the standard drawing numbers in the standard parts automated design rule table knowledge base are mapped one-to-one with the selection of process route templates to form the standard parts automated design process route template knowledge base. Establish a model for calculating the time required for automated design of standard parts: The time calculation model is set up based on the names, parameters, drawing number parsing rules, and process template numbers of the standard drawing numbers compiled in the standard parts automated design rule table knowledge base. During application: Computer-aided design software checks in the parts, components, models, or drawings of standard mechanisms in the product into the PLM system, which in turn checks them into the Windchill system, where a corresponding process BOM is automatically created. In the process BOM, the corresponding type of material is obtained by traversing the BOM. By matching the information in the knowledge base of the standard drawing number and standard parts automated design rule table, the original material information of parts and components is automatically attached. Based on the material, plate thickness and process dimension information, the process material quota and auxiliary material quota are automatically calculated. At the same time, based on the information in the standard parts automated design process route template knowledge base matched with the standard drawing number, a unique process route is automatically matched and created; The system automatically calculates the time based on the standard parts automated design time calculation model, and finally realizes the automatic generation of standard parts processes.

[0009] This invention organizes standard parts and establishes a knowledge base for automated design rules, a knowledge base for automated design process route templates, and a model for calculating the time of automated design of standard parts. By linking the knowledge bases for automated design rules and process route templates, the process route templates can be dynamically matched with the specific parameters of the standard parts, and the time calculations can also change dynamically. On the one hand, this realizes the automated design of standard parts processes, and on the other hand, it achieves the goal of updating standard parts processes synchronously with design changes.

[0010] Based on the above, in the process of establishing a knowledge base of automated design rules for standard parts, various parameters of standard drawing numbers are sorted out, including the name corresponding to the drawing number, material quota parameters, process parameters, auxiliary material parameters, main process route parameters, drawing number parsing rules, and process template number.

[0011] The parameters include both fixed parameters and variable parameters.

[0012] Based on the above, the knowledge base of the standard parts automated design rule table, the knowledge base of the standard parts automated design process route template, and the standard parts automated design time calculation model are all generated based on the CAPP computer-aided process design system, and utilize the basic functions of the CAPP computer-aided process design system.

[0013] Based on the above, the process route templates in the standard parts automated design process route template knowledge base contain the following information: process, processing equipment, production line, work center, and process processing instructions.

[0014] Based on the above, the process description information is defined by referencing process parameter information.

[0015] Based on the above, each type of part or component should be configured with at least one rule that matches the process route template.

[0016] This invention possesses significant substantive features and substantial advancements compared to existing technologies. Specifically, by analyzing features such as component drawing numbers, materials, and specifications, this invention automatically matches standardized process templates in a rule base with the corresponding process parameters for each drawing number, achieving fully automated "one-click" calculation of process material quotas, intelligent process arrangement, and accurate time calculation. Furthermore, due to the establishment of a dynamic matching relationship between standardized parts, components, and process route templates, when the design of standardized parts or components changes, the entire process of automatically updating process material quota calculation, intelligent process arrangement, and accurate time calculation can be synchronized. Attached Figure Description

[0017] Figure 1 This is a flowchart of the method for automatically generating the process of variable-length standard parts in this invention. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0019] like Figure 1 As shown, a method for automatically generating the process of a standard part of variable length includes the following steps: Establish a knowledge base for automated design rules for standard parts: Standard drawing numbers are used to uniformly plan the parts and components of standard mechanisms in the product, sort out all the dimensional information of the parts and components, and clearly divide the dimensional information into variable parameters and fixed parameters. The variable parameters are expressed by function relations and associated with the product name, and written into the product CNAME name in the form of relations.

[0020] By sorting out the names, material quota parameters, process parameters, auxiliary material parameters, main process route parameters, drawing number parsing rules (parsing the specific values ​​of variable parameters in standard part drawing numbers), process template numbers and other information (including fixed parameters and variable parameters), we can provide data support for subsequent process material quota calculation and process time calculation, as shown in Table 1 below.

[0021] Establish a knowledge base for automated design process route templates for standard parts: Create process route templates for each type of part and component under all possible conditions based on the standard drawing number, and number the created process route templates. The process route template includes information such as: operation, processing equipment, production line, work center, and operation description. The operation description information in the process route template is defined by referencing operation parameter information, so that the specific values ​​corresponding to the parameters are automatically called during subsequent process generation, as shown in Table 2 below.

[0022] Table 2: Templates for Automated Design Process Routes for Standard Parts (Partial Examples)

[0023] The drawing number parsing rules in the standard parts automated design rule table knowledge base are introduced to set parameter relationship conditions, and the standard drawing numbers in the standard parts automated design rule table knowledge base are mapped one-to-one with the selection of process route templates to form the standard parts automated design process route template knowledge base. The principle is to select process route templates based on parameter conditions. Changes in process parameters will lead to changes in the process route template. Therefore, it is necessary to define parameter relationship conditions to achieve automatic selection of process route templates. For example, if a ≥ 2b + 10, template 1 is selected; if a < 2b + 10, template 2 is selected. Corresponding usage rules can be configured for each type of part and component.

[0024] Establish a model for calculating the time required for automated design of standard parts: The information from the aforementioned knowledge base of automated design rules for standard parts is developed and integrated into the structured process system (CAPP). At the same time, the material quota calculation model and the time calculation model are integrated into the structured process system. The material quota calculation model can be directly integrated into the knowledge base of automated design rules for standard parts.

[0025] During application: Once the product design is completed, computer-aided design software (CAD) checks the parts, component models, or drawings of the standard mechanisms in the product into the PLM system, which in turn checks them into the Windchill system, where a corresponding process BOM is automatically created. In the process BOM, the corresponding type of material is obtained by traversing the BOM. By matching the information in the knowledge base of the standard drawing number and standard parts automated design rule table, the original material information of parts and components is automatically attached. Based on the material, plate thickness and process dimension information, the process material quota and auxiliary material quota are automatically calculated. At the same time, based on the information in the standard parts automated design process route template knowledge base matched with the standard drawing number, a unique process route is automatically matched and created; The system automatically calculates the time based on the standard parts automated design time calculation model, and finally realizes the automatic generation of standard parts processes.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A method for automatically generating processes for variable-length standard parts, characterized in that: Includes the following steps: Establish a knowledge base for automated design rules for standard parts: Standard drawing numbers are used to uniformly plan the parts and components of standard mechanisms in the product, sort out all the dimensional information of the parts and components, and clearly divide the dimensional information into variable parameters and fixed parameters. The variable parameters are expressed by functional relationships and associated with the product name. Further refine the names, parameters, drawing number parsing rules, and process template numbers corresponding to standard drawing numbers as the basic components of the knowledge base of the standard parts automated design rule table; Establish a knowledge base for automated design process route templates for standard parts: Create process route templates for each type of part and component under all possible conditions based on the standard drawing number, and number the created process route templates. The drawing number parsing rules in the standard parts automated design rule table knowledge base are introduced to set parameter relationship conditions, and the standard drawing numbers in the standard parts automated design rule table knowledge base are mapped one-to-one with the selection of process route templates to form the standard parts automated design process route template knowledge base. Establish a model for calculating the time required for automated design of standard parts: The time calculation model is set up based on the names, parameters, drawing number parsing rules, and process template numbers of the standard drawing numbers compiled in the standard parts automated design rule table knowledge base. During application: Computer-aided design software checks in the parts, components, models, or drawings of standard mechanisms in the product into the PLM system, which in turn checks them into the Windchill system, where a corresponding process BOM is automatically created. In the process BOM, the corresponding type of material is obtained by traversing the BOM. By matching the information in the knowledge base of the standard drawing number and standard parts automated design rule table, the original material information of parts and components is automatically attached. Based on the material, plate thickness and process dimension information, the process material quota and auxiliary material quota are automatically calculated. At the same time, based on the information in the standard parts automated design process route template knowledge base matched with the standard drawing number, a unique process route is automatically matched and created; The system automatically calculates the time based on the standard parts automated design time calculation model, and finally realizes the automatic generation of standard parts processes.

2. The method for automatically generating processes for variable-length standard parts according to claim 1, characterized in that: In the process of establishing a knowledge base of automated design rules for standard parts, various parameters of standard drawing numbers are sorted out, including the name corresponding to the drawing number, material quota parameters, process parameters, auxiliary material parameters, main process route parameters, drawing number parsing rules, and process template number.

3. The method for automatically generating processes for variable-length standard parts according to claim 2, characterized in that: The parameters mentioned include fixed parameters and variable parameters.

4. The method for automatically generating processes for variable-length standard parts according to claim 1, characterized in that: The knowledge base of the standard parts automated design rule table, the knowledge base of the standard parts automated design process route template, and the standard parts automated design time calculation model are all generated based on the CAPP computer-aided process design system.

5. The method for automatically generating processes for variable-length standard parts according to claim 1, characterized in that: The process route templates in the standard parts automated design process route template knowledge base contain the following information: process, processing equipment, production line, work center, and process processing instructions.

6. The method for automatically generating processes for variable-length standard parts according to claim 5, characterized in that: The process description information is defined by referencing the process parameter information.

7. The method for automatically generating processes for variable-length standard parts according to claim 1, characterized in that: Each type of part or component must be configured with at least one rule that matches the process route template.

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