A data-based method and system for manufacturing analysis of automotive parts

Abstract

The application relates to the technical field of automobile part manufacturing data analysis, and discloses an automobile part manufacturing analysis method and system based on data, which comprises an automobile part design data processing module, an automobile part processing data processing module and an automobile part manufacturing quality analysis module; according to the processing CAD drawing parameters, the processing size and position CAD drawing parameters and the automobile part product two-dimensional part structure CAD drawing parameters of the automobile part, the automobile part product two-dimensional processing CAD drawing parameters are scientifically constructed in combination with CAD software, the automobile part product two-dimensional processing CAD drawing parameters are accurately established in a numerical form, the actual processing size tolerance and the shape and position tolerance parameters of the automobile part product are accurately measured in combination with the CAD software and the target automobile part processing size and position CAD measurement sequence instruction parameters, and the efficiency and the precision of the automobile part manufacturing quality inspection are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts manufacturing data analysis, in particular to an automobile parts manufacturing analysis method and system based on data. BACKGROUND

[0002] Automobile parts manufacturing is an important part of the automobile manufacturing industry, which involves the processing, assembly and testing of various parts. These parts include engines, transmissions, suspension systems, braking systems, bodies, seats, etc. Automobile parts manufacturing includes the following main steps: 1. Research and development and design: According to the requirements and technical requirements of automobile manufacturers, the research and development department will design new automobile parts samples. Designers need to consider factors such as performance, reliability, cost, etc. of the parts. 2. Raw material procurement: Automobile parts manufacturers need to purchase various raw materials such as steel, aluminum, plastic, etc. from suppliers. The quality of these raw materials directly affects the quality of the final product. 3. Production preparation: Install and maintain necessary production equipment on the production line, such as punching machines, welding machines, heat treatment equipment, etc. At the same time, train employees to ensure they are familiar with the production process and requirements of new products. 4. Processing and manufacturing: According to the product design drawings and production plan, employees use various mechanical equipment to process raw materials to produce the required parts. 5. Quality control: During the production process, quality inspectors will check each part to ensure that they meet quality standards. If unqualified products are found, they need to be reworked or scrapped immediately. 6. Assembly and assembly: Assembled parts are assembled according to design requirements to form complete automobile systems or whole vehicles. 7. Testing and testing: After assembly, the automobile parts and whole vehicles need to be tested for various performance tests such as durability, safety, fuel efficiency, etc. to ensure that they meet the needs of customers and users. The existing automobile parts products need to be inspected by quality inspectors based on the size, size tolerance, and geometric tolerance information marked on the mechanical design drawings for product processing quality inspection. Manual inspection of automobile parts product processing quality not only easily causes misjudgment, but also has low efficiency and cannot visualize efficient feedback of inspection results.

[0003] Chinese invention patent application with publication number CN114186359A discloses a mechanical product manufacturability intelligent analysis method and system, which obtains product drawing data and processing samples, analyzes one or more processing procedures of the product, searches for all processing equipment involved in the processing procedure and processing parameters and limitations of each processing equipment; based on the drawing data, processing parameters and limitations, the manufacturability of the product is analyzed based on the preset manufacturability conditions to realize intelligent design analysis of product manufacturability; however, the above technical solution cannot realize independent detection and analysis of mechanical product processing size, reducing the efficiency and quality of mechanical product processing inspection. SUMMARY

[0004] (a) Technical problems to be solved

[0005] To address the existing issues of quality inspectors needing to manually check the dimensions, tolerances, and geometric tolerances of automotive parts based on mechanical design drawings, which are prone to errors, inefficient, and lack visual feedback, this paper aims to achieve the following: online acquisition of automotive parts machining CAD drawing data; accurate acquisition of automotive parts machining dimension and geometric tolerance CAD drawing data; intelligent matching of automotive parts machining dimension and geometric tolerance CAD measurement sequence instructions; scientific search of automotive parts machining dimension and geometric tolerance data; scientific creation of automotive parts product 3D solid models; accurate generation of automotive parts product 2D component structure CAD drawing data; autonomous construction of automotive parts product 2D machining CAD drawing data; accurate measurement of automotive parts product actual machining dimension and geometric tolerance data; scientific analysis of automotive parts product actual machining dimension and geometric quality; and intuitive visual feedback of automotive parts product actual machining dimension and geometric quality.

[0006] (II) Technical Solution

[0007] This invention is achieved through the following technical solution: a data-based automotive parts manufacturing analysis method, the method comprising the following steps:

[0008] S1. Collect CAD drawing data for automotive parts processing and CAD drawing data for automotive parts processing dimensions and positions;

[0009] S2. Based on the automotive parts processing CAD drawing data and automotive parts processing dimension and position CAD measurement sequence instruction data, perform CAD execution instruction information search and processing for dimensional tolerance and position tolerance measurement in the automotive parts processing drawings to generate target automotive parts processing dimension and position CAD measurement sequence instruction data.

[0010] S3. Based on the automotive parts processing CAD drawing data and automotive parts processing dimension and position text data, perform text information search and processing of dimensional tolerance and geometric tolerance design requirements in the automotive parts processing drawings to generate target automotive parts processing dimension and position text data.

[0011] S4. Collect the three-dimensional solid model data of automotive parts and combine it with the automotive parts processing CAD drawing data to construct and process the CAD drawing data of the two-dimensional part structure of the automotive parts, and generate the CAD drawing data of the two-dimensional part structure of the automotive parts.

[0012] S5, according to the automobile parts processing CAD drawing data, the automobile parts processing size and shape CAD drawing data, the automobile parts product two-dimensional part structure CAD drawing data, the product processing size tolerance, the shape tolerance of the CAD drawing matching processing of the product two-dimensional part structure CAD drawing of the automobile parts product is generated, and the actual processing size tolerance, the shape tolerance parameter measurement processing of the automobile parts product is carried out with the target automobile parts processing size and shape CAD measurement sequence instruction data, and the automobile parts product actual processing size and shape data is generated;

[0013] S6, according to the automobile parts product actual processing size and shape data, the target automobile parts processing size and shape text data, the processing quality analysis processing of the actual size tolerance, the shape tolerance of the automobile parts product is generated, and the automobile parts product actual processing size and shape quality analysis data is generated;

[0014] S7, the automobile parts manufacturing quality inspection data is constructed and the automobile parts manufacturing quality inspection result display operation is executed.

[0015] Preferably, the operation steps of collecting automobile parts processing CAD drawing data and automobile parts processing size and shape CAD drawing data are as follows:

[0016] S11, the user inputs the theoretical design mechanical CAD drawing information of automobile parts processing through the data input end of automobile parts manufacturing management platform online, and generates automobile parts processing CAD drawing data ;

[0017] The user inputs the mechanical CAD drawing information of the size, size tolerance and shape tolerance marked by the theoretical design of automobile parts processing through the data input end of automobile parts manufacturing management platform online, and generates automobile parts processing size and shape CAD drawing data .

[0018] Preferably, the operation steps of searching the CAD execution instruction information of the size tolerance and shape tolerance measurement in the automobile parts processing drawing according to the automobile parts processing CAD drawing data and the automobile parts processing size and shape CAD measurement sequence instruction data are as follows:

[0019] S21, establish automobile parts processing size and shape CAD measurement sequence instruction data set matrix , ; wherein represents the first A set of CAD measurement sequence instructions for the machining dimensions and positions of various automotive parts, corresponding to different types of automotive parts machining drawing objects. This represents the maximum number of object types in automotive parts machining drawings, where , , This represents the set of CAD measurement sequence instructions for the machining dimensions of the automotive parts. The Middle CAD measurement sequence instructions for the machining dimensions and positions of automotive parts. This represents the set of CAD measurement sequence instructions for the machining dimensions of the automotive parts. The maximum number of CAD measurement sequence instructions for the processing dimensions and positions of automotive parts; the automotive parts processing drawing object type represents the CAD processing drawing object type of automotive parts with different shapes and size requirements; the automotive parts processing dimensions and positions CAD measurement sequence instruction data represents the CAD dimension tolerance or geometric tolerance measurement sequence execution instruction parameters set by the automotive parts manufacturing enterprise for the processing CAD drawing standard of different types of automotive parts manufactured by the enterprise, which are used to measure the actual processing dimension tolerance parameters or geometric tolerance parameters of the automotive parts.

[0020] S22. The KD-tree nearest neighbor search algorithm is used to process the CAD drawing data of the automotive parts. The data set matrix of CAD measurement sequence instructions for the processing dimensions and positions of the automotive parts The set of CAD measurement sequence instructions for the machining dimensions and positions of automotive parts described in the document Perform feature matching on automotive parts machining CAD drawings to retrieve the automotive parts machining CAD drawing data. The corresponding set of CAD measurement sequence instructions for the processing dimensions and positions of automotive parts And through data identification, a set of CAD measurement sequence instructions for the processing dimensions and positions of target automotive parts is generated. ,in Indicates the first CAD measurement sequence instructions for the processing dimensions and positions of target automotive parts.

[0021] Preferably, the steps for searching and processing the text information of dimensional tolerances and geometric tolerances design requirements in the automotive parts processing drawings based on the automotive parts processing CAD drawing data and automotive parts processing dimensional and positional text data to generate the target automotive parts processing dimensional and positional text data are as follows:

[0022] S31. Establish a matrix of text data sets for the processing dimensions and positions of automotive parts. ,in indicates the first The automobile part processing size and shape text data set corresponding to the automobile part processing drawing object type is indicated by , indicates the automobile part processing size and shape text data in the automobile part processing size and shape text data set indicates the first automobile part processing size and shape text data in the automobile part processing size and shape text data set; the automobile part processing size and shape text data indicates the specific automobile part processing standard size tolerance text information or standard shape tolerance text information set by the automobile part manufacturing enterprise for different types of automobile parts manufactured by the enterprise.

[0023] S32, using a unified cost search algorithm to match the automobile part processing CAD drawing data with the automobile part processing size and shape text data set in the automobile part processing size and shape text data set matrix searches out the automobile part processing size and shape text data set corresponding to the automobile part processing CAD drawing data , and generates target automobile part processing size and shape text data through data identification, wherein indicates the first target automobile part processing size and shape text data.

[0024] Preferably, the operation steps of collecting automobile part product three-dimensional entity model data and combining the automobile part processing CAD drawing data to construct the two-dimensional part structure CAD drawing data of the automobile part product are as follows:

[0025] S41, collecting three-dimensional modeling entity model parameters of automobile part products manufactured based on automobile part processing CAD drawings through a three-dimensional laser scanner online, and generating automobile part product three-dimensional entity model data ;

[0026] S42, importing the automobile part product three-dimensional entity model data into CAD software for running, and converting the three-dimensional part structure of the automobile part product in the running state into a two-dimensional part structure CAD drawing, until the generated two-dimensional part structure CAD drawing is consistent with the automobile part processing CAD drawing data ​​the two-dimensional part structure CAD view in the two-dimensional part structure CAD view of the automobile part product is matched completely, and the two-dimensional part structure CAD drawing of the automobile part product is generated through data identification , the two-dimensional part structure CAD drawing data of the automobile part product includes basic view CAD drawing data, auxiliary view CAD drawing data and section view CAD drawing data of the automobile part product.

[0027] Preferably, according to the automobile part processing CAD drawing data, the automobile part processing size and shape CAD drawing data and the two-dimensional part structure CAD drawing data of the automobile part product, the CAD drawing matching processing of the product processing size and shape tolerance in the two-dimensional part structure CAD drawing of the automobile part product is performed, the two-dimensional processing CAD drawing data of the automobile part product is generated, and the actual processing size and shape tolerance parameter measurement processing of the automobile part product is performed with the target automobile part processing size and shape CAD measurement sequence instruction data, and the operation steps of generating the actual processing size and shape data of the automobile part product are as follows:

[0028] S51, the automobile part processing CAD drawing data , the automobile part processing size and shape CAD drawing data and the two-dimensional part structure CAD drawing data of the automobile part product are imported into the CAD software for running, the automobile part processing size and shape CAD drawing data in the running state is combined with the two-dimensional part structure CAD drawing data of the automobile part product for CAD drawing combination processing, until the CAD drawing generated by the combination is completely matched with the CAD drawing features in the automobile part processing CAD drawing data , and the successfully combined CAD drawing is generated as the two-dimensional processing CAD drawing data of the automobile part product ;

[0029] S52, the CAD software according to the target automobile part processing size and shape CAD measurement sequence instruction data in the target automobile part processing size and shape CAD measurement sequence instruction data set according to the target automobile part processing size and shape CAD measurement sequence instruction number, the automobile part product two-dimensional processing CAD drawing data The actual machining size tolerance or shape tolerance parameter measurement operation of the ordered automobile parts product is performed, and the measured actual machining size tolerance or shape tolerance parameter of the automobile parts product is constructed as an actual machining size shape data set of the automobile parts product , wherein the target automobile parts machining size shape CAD measurement sequence instruction data corresponding to the actual machining size shape data of the automobile parts product .

[0030] Preferably, the actual size tolerance and shape tolerance machining quality analysis processing of the automobile parts product is performed according to the actual machining size shape data of the automobile parts product and the target automobile parts machining size shape text data, and the operation steps of generating the actual machining size shape quality analysis data of the automobile parts product are as follows:

[0031] S61, acquiring the target automobile parts machining size shape text data and the actual machining size shape data set of the automobile parts product ;

[0032] S62, performing size tolerance or shape tolerance value interval comparison on the actual machining size shape data of the automobile parts product in the actual machining size shape data set of the automobile parts product according to the target automobile parts machining size shape CAD measurement sequence instruction number and the target automobile parts machining size shape text data in the target automobile parts machining size shape text data , and generating an actual machining size shape quality analysis data set of the automobile parts product according to the size tolerance or shape tolerance value comparison result . , wherein the actual machining size shape data of the automobile parts product corresponding to the actual machining size shape quality analysis data of the automobile parts product

[0033] if the actual machining size tolerance or shape tolerance of the automobile parts product meets the automobile parts machining theoretical design size tolerance or shape tolerance standard requirement, the actual machining size shape quality analysis data of the automobile parts product is output as qualified;

[0034] ​The actual machining size tolerance or shape tolerance of the automobile part product does not meet the standard requirement of the automobile part machining theoretical design size tolerance or shape tolerance, and the actual machining size shape quality analysis data of the automobile part product is output is unqualified.

[0035] Preferably, the operation steps of constructing automobile part manufacturing quality inspection data and performing automobile part manufacturing quality inspection result display operation are as follows:

[0036] S71, the target automobile part machining size shape text data , the automobile part product actual machining size shape data set And the automobile part product actual machining size shape quality analysis data set Data combination to construct automobile part manufacturing quality inspection data , wherein ;

[0037] S72, the automobile part manufacturing quality inspection data generated is transmitted to the automobile part manufacturing management platform through the Internet of Things communication network, and the display screen is used to perform automobile part manufacturing quality inspection result display operation.

[0038] A kind of automobile part manufacturing analysis system based on data for realizing the automobile part manufacturing analysis method based on data, the system includes automobile part design data processing module, automobile part machining data processing module, automobile part manufacturing quality analysis module;

[0039] The automobile part design data processing module includes automobile part machining CAD drawing information acquisition unit, automobile part machining size shape CAD drawing information acquisition unit, automobile part machining size shape CAD measurement sequence instruction storage unit, target automobile part machining size shape CAD measurement sequence instruction search unit, automobile part machining size shape information storage unit, target automobile part machining size shape information search unit;

[0040] The automobile part processing CAD drawing information acquisition unit acquires automobile part processing CAD drawing data through the automobile part manufacturing management platform; the automobile part processing size and shape CAD drawing information acquisition unit acquires automobile part processing size and shape CAD drawing data through the automobile part manufacturing management platform; the automobile part processing size and shape CAD measurement sequence instruction storage unit is used for storing automobile part processing size and shape CAD measurement sequence instruction data; the target automobile part processing size and shape CAD measurement sequence instruction search unit carries out CAD execution instruction information search processing of size tolerance and shape tolerance measurement in automobile part processing drawings according to the automobile part processing CAD drawing data and the automobile part processing size and shape CAD measurement sequence instruction data, and generates target automobile part processing size and shape CAD measurement sequence instruction data; the automobile part processing size and shape information storage unit is used for storing automobile part processing size and shape text data; the target automobile part processing size and shape information search unit carries out size tolerance and shape tolerance design requirement text information search processing in automobile part processing drawings based on the automobile part processing CAD drawing data and the automobile part processing size and shape text data, and generates target automobile part processing size and shape text data;

[0041] The automobile part processing data processing module includes an automobile part product three-dimensional entity model acquisition unit, an automobile part product two-dimensional part structure CAD drawing information generation unit, an automobile part product two-dimensional processing CAD drawing information generation unit, and an automobile part product actual processing size and shape information measurement unit.

[0042] The automobile part product three-dimensional entity model acquisition unit collects automobile part product three-dimensional entity model data through a three-dimensional laser scanner; the automobile part product two-dimensional part structure CAD drawing information generation unit constructs and processes the CAD drawing data of the two-dimensional part structure of the automobile part product according to the automobile part product three-dimensional entity model data and the automobile part processing CAD drawing data, and generates automobile part product two-dimensional part structure CAD drawing data; the automobile part product two-dimensional processing CAD drawing information generation unit performs CAD drawing matching processing of product processing size tolerance and shape tolerance in the two-dimensional part structure CAD drawing of the automobile part product according to the automobile part processing CAD drawing data, the automobile part processing size and shape CAD drawing data and the automobile part product two-dimensional part structure CAD drawing data, and generates automobile part product two-dimensional processing CAD drawing data; and the automobile part product actual processing size and shape information measurement unit performs actual processing size tolerance and shape tolerance parameter measurement processing of the automobile part product according to the automobile part product two-dimensional processing CAD drawing data and the target automobile part processing size and shape CAD measurement sequence instruction data, and generates automobile part product actual processing size and shape data.

[0043] The automobile part manufacturing quality analysis module includes an automobile part product actual processing size and shape quality analysis unit, an automobile part manufacturing quality inspection information construction unit and an automobile part manufacturing quality inspection information display unit.

[0044] The automobile part product actual processing size and shape quality analysis unit performs processing quality analysis processing of actual size tolerance and shape tolerance of the automobile part product according to the automobile part product actual processing size and shape data and the target automobile part processing size and shape text data, and generates automobile part product actual processing size and shape quality analysis data; the automobile part manufacturing quality inspection information construction unit is used for constructing automobile part manufacturing quality inspection data; and the automobile part manufacturing quality inspection information display unit displays the automobile part manufacturing quality inspection result according to the automobile part manufacturing quality inspection data, the automobile part manufacturing management platform and the display screen.

[0045] (Three) Beneficial effects

[0046] The application provides an automobile part manufacturing analysis method and system based on data. The following beneficial effects are achieved:

[0047] I. Through the online accurate collection of automobile parts processing CAD drawing parameters and machining size and shape CAD drawing parameters by the automobile parts manufacturing management platform, real data support is provided for subsequent intelligent and accurate measurement of actual machining size tolerance and shape tolerance of automobile parts. According to the automobile parts processing CAD drawing parameters, intelligent search algorithm and automobile parts machining size and shape CAD measurement sequence instruction parameters based on big data storage, CAD execution instruction information accurate search is carried out for size tolerance and shape tolerance measurement in automobile parts processing drawing, intelligent matching of different types of automobile parts machining size tolerance and shape tolerance CAD measurement instruction is realized, and self-efficient measurement of actual machining size tolerance and shape tolerance of automobile parts is realized. Based on the automobile parts processing CAD drawing parameters, intelligent search algorithm and standard automobile parts machining size and shape text parameters, scientific search of size tolerance and shape tolerance design parameters in automobile parts processing drawing is carried out, accurate search of different types of parts processing theoretical design size tolerance and shape tolerance parameters is realized, accurate output of automobile parts processing CAD drawing size tolerance and shape tolerance information as automobile parts processing size tolerance and shape tolerance text information is realized, and intelligent collection of automobile parts processing theoretical design size tolerance and shape tolerance parameters is realized.

[0048] II. Through efficient collection of automobile parts product three-dimensional entity model parameters by three-dimensional laser scanner, combined with CAD software and automobile parts processing CAD drawing parameters, CAD drawing of two-dimensional part structure of automobile parts product is dynamically and accurately constructed, and numerical establishment of two-dimensional part structure CAD drawing parameters of automobile parts product is realized. According to the processing CAD drawing parameters, machining size and shape CAD drawing parameters and two-dimensional part structure CAD drawing parameters of automobile parts product, two-dimensional machining CAD drawing parameters of automobile parts product are scientifically constructed by CAD software, and numerical and self-accurate establishment of two-dimensional machining CAD drawing parameters of automobile parts product is realized. According to the two-dimensional machining CAD drawing parameters of automobile parts product, combined with CAD software and target automobile parts machining size and shape CAD measurement sequence instruction parameters, accurate measurement of actual machining size tolerance and shape tolerance parameters of automobile parts product is realized, intelligent measurement of actual machining size tolerance and shape tolerance parameters of automobile parts product is realized, and the efficiency and precision of automobile parts manufacturing quality inspection are improved.

[0049] III. Through the actual machining size and shape parameter of the automobile parts product, the target automobile parts machining size and shape text information combined with numerical analysis, the actual size tolerance and shape tolerance of the automobile parts product are scientifically analyzed, and the manufacturing quality of the automobile parts product is realized. The size tolerance and shape tolerance of the automobile parts are accurately and reliably analyzed; based on the actual machining size and shape parameter of the automobile parts product, the target automobile parts machining size and shape text information and the actual machining size and shape quality analysis result of the automobile parts product, the automobile parts manufacturing quality inspection information is scientifically constructed, the size tolerance and shape tolerance of the automobile parts are accurately collected, and the actual machining size and shape quality information of the automobile parts product is realized. At the same time, combined with the automobile parts manufacturing management platform and the display screen, the automobile parts manufacturing quality inspection result is independently visualized and displayed, and the feedback efficiency and intuitiveness of the automobile parts manufacturing quality inspection result are improved. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 A module schematic diagram of an automobile parts manufacturing analysis system based on data provided by the application;

[0051] Figure 2 A flowchart of an automobile parts manufacturing analysis method based on data provided by the application. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the application will be described clearly and completely in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0053] The implementation of the automobile parts manufacturing analysis method and system based on data is as follows:

[0054] Embodiment 1:

[0055] Please refer to Figure 1 - Figure 2 An automobile parts manufacturing analysis method based on data, the method comprising the following steps:

[0056] S1, collecting automobile parts machining CAD drawing data and automobile parts machining size and shape CAD drawing data;

[0057] S2, according to the automobile parts machining CAD drawing data and the automobile parts machining size and shape CAD measurement sequence instruction data, the CAD execution instruction information search processing of the size tolerance and shape tolerance measurement in the automobile parts machining drawing is carried out, and the target automobile parts machining size and shape CAD measurement sequence instruction data is generated;

[0058] S3, search and process the text information of the design requirements of the size tolerance and the shape and position tolerance in the automobile part processing drawing based on the automobile part processing CAD drawing data and the automobile part processing size and shape text data, and generate target automobile part processing size and shape text data;

[0059] S4, collect automobile part product three-dimensional entity model data and combine automobile part processing CAD drawing data to construct automobile part product two-dimensional part structure CAD drawing data, and generate automobile part product two-dimensional part structure CAD drawing data;

[0060] S5, according to the automobile part processing CAD drawing data, the automobile part processing size and shape CAD drawing data, and the automobile part product two-dimensional part structure CAD drawing data, the CAD drawing matching processing of the product processing size tolerance and the shape and position tolerance in the automobile part product two-dimensional part structure CAD drawing is carried out, the automobile part product two-dimensional processing CAD drawing data is generated, and the actual processing size tolerance and the shape and position tolerance parameter measurement processing of the automobile part product is carried out with the target automobile part processing size and shape CAD measurement sequence instruction data, and the automobile part product actual processing size and shape data is generated;

[0061] S6, according to the automobile part product actual processing size and shape data, the target automobile part processing size and shape text data, the processing quality analysis processing of the actual size tolerance and the shape and position tolerance of the automobile part product is carried out, and the automobile part product actual processing size and shape quality analysis data is generated;

[0062] S7, construct automobile part manufacturing quality inspection data and execute automobile part manufacturing quality inspection result display job.

[0063] Further, please refer to Figure 1 Figure 2 The operation steps of collecting automobile part processing CAD drawing data and automobile part processing size and shape CAD drawing data are as follows:

[0064] S11, the user inputs the theoretical design mechanical CAD drawing information of the automobile part processing through the data input end of the automobile part manufacturing management platform online, and generates automobile part processing CAD drawing data .

[0065] The user inputs the mechanical CAD drawing information of the size, size tolerance and shape and position tolerance of the theoretical design label of the automobile part processing through the data input end of the automobile part manufacturing management platform online, and generates automobile part processing size and shape CAD drawing data . ​

[0066] The operation steps of searching the CAD execution instruction information of measuring the size tolerance and the shape and position tolerance in the automobile part processing drawing according to the automobile part processing CAD drawing data and the automobile part processing size and shape CAD measurement sequence instruction data are as follows:

[0067] S21, establishing an automobile part processing size and shape CAD measurement sequence instruction data set matrix , ; wherein represents the automobile part processing size and shape CAD measurement sequence instruction data set corresponding to the automobile part processing drawing object type, represents the maximum value of the number of automobile part processing drawing object types, wherein , , , represents the automobile part processing size and shape CAD measurement sequence instruction data set in the automobile part processing size and shape CAD measurement sequence instruction data set , represents the maximum value of the number of automobile part processing size and shape CAD measurement sequence instructions in the automobile part processing size and shape CAD measurement sequence instruction data set ; the automobile part processing drawing object type represents the CAD processing drawing object type of the automobile part with different shapes and different size requirements; the automobile part processing size and shape CAD measurement sequence instruction data represents the CAD size tolerance or shape tolerance measurement sequence execution instruction parameter for measuring the size tolerance parameter or shape tolerance parameter of the actual processing of the automobile part, which is set by the automobile part manufacturing enterprise for the processing CAD drawing standard of different types of automobile parts manufactured by the enterprise;

[0068] S22, using the K-D tree nearest neighbor search algorithm to perform automobile part processing CAD drawing feature matching between the automobile part processing CAD drawing data and the automobile part processing size and shape CAD measurement sequence instruction data set matrix in the automobile part processing size and shape CAD measurement sequence instruction data set , search out the automobile part processing CAD drawing data corresponding to the automobile part processing size and shape CAD measurement sequence instruction data set , and generate the target automobile part processing size and shape CAD measurement sequence instruction data set through data identification, wherein represents the automobile part processing size and shape CAD measurement sequence instruction data set Target automobile parts processing size and shape CAD measurement sequence instruction data.

[0069] Based on the automobile parts processing CAD drawing data and the automobile parts processing size and shape text data, the size tolerance and the shape tolerance design requirement text information search processing in the automobile parts processing drawing is performed, and the operation steps of generating the target automobile parts processing size and shape text data are as follows:

[0070] S31, establishing an automobile parts processing size and shape text data set matrix , wherein represents the first kind of automobile parts processing drawing object type corresponding to the automobile parts processing size and shape text data set, wherein , represents the first automobile parts processing size and shape text data in the automobile parts processing size and shape text data set ; the automobile parts processing size and shape text data represents the specific automobile parts processing standard size tolerance text information or standard shape tolerance text information set by the automobile parts manufacturing enterprise for different types of automobile parts processing CAD drawing standards of the enterprise;

[0071] S32, using a unified cost search algorithm to perform automobile parts processing CAD drawing feature matching between the automobile parts processing CAD drawing data and the automobile parts processing size and shape text data set in the automobile parts processing size and shape text data set matrix , searching out the automobile parts processing CAD drawing data corresponding to the automobile parts processing size and shape text data set , and generating the target automobile parts processing size and shape text data through data identification, wherein represents the first target automobile parts processing size and shape text data.

[0072] By cooperating with the automotive parts machining CAD drawing information acquisition unit and the automotive parts machining dimension and form CAD drawing information acquisition unit, the automotive parts manufacturing management platform accurately collects the machining CAD drawing parameters and machining dimension and form CAD drawing parameters of automotive parts online, providing real data support for subsequent intelligent and accurate measurement of the actual machining dimensional tolerances and form and position tolerances of automotive parts. The target automotive parts machining dimension and form CAD measurement sequence instruction search unit, based on the automotive parts machining CAD drawing parameters, combined with intelligent search algorithms and automotive parts machining dimension and form CAD measurement sequence instruction parameters based on big data storage, accurately searches for CAD execution instruction information for dimensional tolerance and form and position tolerance measurement in the automotive parts machining drawings, enabling different types of automotive parts machining CAD drawings to be measured. The system features intelligent matching of CAD measurement commands for automotive parts machining dimensional tolerances and geometric tolerances, enabling autonomous and efficient measurement of actual machining dimensional tolerances and geometric tolerances for automotive parts. A target automotive parts machining dimensional and geometric information search unit, based on automotive parts machining CAD drawing parameters combined with intelligent search algorithms and standard-set automotive parts machining dimensional and geometric text parameters, scientifically searches for dimensional tolerance and geometric tolerance design parameters in automotive parts machining drawings. This achieves accurate searching of theoretical design dimensional tolerances and geometric tolerance parameters for different types of parts, and accurately outputs dimensional tolerance and geometric tolerance information from automotive parts machining CAD drawings as automotive parts machining dimensional tolerance and geometric tolerance text information, enabling intelligent acquisition of theoretical design dimensional tolerances and geometric tolerance parameters for automotive parts machining.

[0073] For further details, please refer to Figure 1 - Figure 2 The steps for collecting 3D solid model data of automotive parts and combining it with CAD drawings of automotive parts manufacturing to generate 2D CAD drawings of automotive parts structures are as follows:

[0074] S41. Use a 3D laser scanner to collect online the parameters of the 3D solid model of automotive parts manufactured based on CAD drawings for automotive parts processing, and generate 3D solid model data of the automotive parts. ;

[0075] S42. Transfer the 3D solid model data of automotive parts products Import the data into CAD software and run it, converting the 3D structure of the automotive parts into 2D CAD drawings until the generated 2D CAD drawings match the automotive parts machining CAD drawing data. The 2D component structure CAD views are completely matched, and the successfully matched 2D component structure CAD drawings are converted and, after data identification, generated as 2D component structure CAD drawing data for automotive parts products. The CAD drawing data of two-dimensional parts structure of automotive parts includes the basic view CAD drawing data, auxiliary view CAD drawing data, and sectional view CAD drawing data of automotive parts.

[0076] Based on the CAD drawings of automotive parts processing, the CAD drawings of automotive parts processing dimensions and positions, and the CAD drawings of automotive parts structures in two dimensions, the CAD drawings of the automotive parts structures in two dimensions are matched with the CAD drawings of the automotive parts to generate CAD drawings of the automotive parts processing dimensions and positions. This generates CAD drawings of the automotive parts processing dimensions and positions. The actual processing dimension tolerances and geometric tolerances of the automotive parts are then measured and processed using the target automotive parts' CAD measurement sequence instruction data. The steps for generating the actual processing dimension and geometric data of the automotive parts are as follows:

[0077] S51. Transfer CAD drawing data for automotive parts processing CAD drawings and data for the machining dimensions and positions of automotive parts CAD drawings of two-dimensional components for automotive parts All data were imported into CAD software and run, and the CAD drawings of the automotive parts' machining dimensions and positions were used in the running process. CAD drawings of two-dimensional components for automotive parts Perform CAD drawing combination processing until the generated CAD drawings are combined with automotive parts machining CAD drawing data. The CAD drawings in the data are fully matched, and the successfully matched CAD drawings are used to generate 2D machining CAD drawing data for automotive parts products through data identification. ;

[0078] S52, CAD software uses a set of instruction data based on the CAD measurement sequence of the target automotive parts' machining dimensions and positions. CAD measurement sequence instruction data for the machining dimensions and positions of automotive parts According to the CAD measurement sequence number of the target automotive parts' machining dimensions and positions, the 2D machining CAD drawing data of the automotive parts products are processed. The actual machining dimensional tolerances or geometrical tolerances of automotive parts are measured in an orderly manner, and the measured actual machining dimensional tolerances or geometrical tolerances of automotive parts are constructed into a set of actual machining dimensional and geometrical data of automotive parts. ,in indicates the target automobile parts processing size shape CAD measurement sequence instruction data corresponding automobile parts product actual processing size shape data. corresponding automobile parts product actual processing size shape data.

[0079] Through the cooperation of the automobile parts product three-dimensional entity model acquisition unit and the automobile parts product two-dimensional part structure CAD drawing information generation unit, the three-dimensional laser scanner is used to efficiently acquire the three-dimensional entity model parameters of the automobile parts product, and the CAD software and the automobile parts processing CAD drawing parameters are combined to independently and dynamically accurately construct the CAD drawing of the two-dimensional part structure of the automobile parts product, and the numerical establishment of the two-dimensional part structure CAD drawing parameters of the automobile parts product is realized; the automobile parts product two-dimensional processing CAD drawing information generation unit, according to the processing CAD drawing parameters of the automobile parts, the processing size shape CAD drawing parameters and the two-dimensional part structure CAD drawing parameters of the automobile parts product, combined with the CAD software, the two-dimensional processing CAD drawing parameters of the automobile parts product are constructed scientifically, and the numerical independent accurate establishment of the two-dimensional processing CAD drawing parameters of the automobile parts product is realized; the automobile parts product actual processing size shape information measurement unit, according to the two-dimensional processing CAD drawing parameters of the automobile parts product combined with the CAD software and the target automobile parts processing size shape CAD measurement sequence instruction parameters, the actual processing size tolerance and shape tolerance parameters of the automobile parts product are accurately measured, the intelligent measurement of the actual processing size tolerance and shape tolerance parameters of the automobile parts product is realized, and the efficiency and precision of the automobile parts manufacturing quality inspection are improved.

[0080] Further, please refer to Figure 1 Figure 2 , according to the automobile parts product actual processing size shape data, the target automobile parts processing size shape text data, the processing quality analysis and processing of the automobile parts product actual size tolerance and shape tolerance are generated, and the operation steps of the automobile parts product actual processing size shape quality analysis data are as follows:

[0081] S61, obtaining target automobile parts processing size shape text data and automobile parts product actual processing size shape data set ;

[0082] S62, the automobile parts product actual processing size shape data set in the automobile parts product actual processing size shape data According to the target automobile parts processing size shape CAD measurement sequence instruction number and the target automobile parts processing size shape text data in the target automobile parts processing size shape text data ​Carrying out size tolerance or geometric tolerance numerical interval comparison, generating automobile parts product actual machining size and geometric quality analysis data set according to size tolerance or geometric tolerance numerical comparison result , wherein represents automobile parts product actual machining size and geometric data Corresponding automobile parts product actual machining size and geometric quality analysis data

[0083] represents automobile parts product actual machining size tolerance or geometric tolerance meeting automobile parts machining theoretical design size tolerance or geometric tolerance standard requirements, then outputting automobile parts product actual machining size and geometric quality analysis data is qualified

[0084] represents automobile parts product actual machining size tolerance or geometric tolerance not meeting automobile parts machining theoretical design size tolerance or geometric tolerance standard requirements, then outputting automobile parts product actual machining size and geometric quality analysis data is unqualified

[0085] The operation steps of constructing automobile parts manufacturing quality inspection data and performing automobile parts manufacturing quality inspection result display operation are as follows:

[0086] S71, combining target automobile parts machining size and geometric text data , automobile parts product actual machining size and geometric data set and automobile parts product actual machining size and geometric quality analysis data set to construct automobile parts manufacturing quality inspection data , wherein ;

[0087] S72, transmitting the generated automobile parts manufacturing quality inspection data to the automobile parts manufacturing management platform through the Internet of Things communication network, and cooperating with the display screen to perform automobile parts manufacturing quality inspection result display operation.

[0088] The actual machining size and shape parameter of the automobile part product, the target automobile part machining size and shape text information, and the numerical analysis are combined to scientifically analyze the actual size tolerance and shape tolerance machining quality of the automobile part product, realize the precise and reliable analysis of the automobile part size tolerance and shape tolerance manufacturing quality, and realize the precise and reliable analysis of the automobile part size tolerance and shape tolerance manufacturing quality. The automobile part manufacturing quality inspection information construction unit and the automobile part manufacturing quality inspection information display unit are matched with each other, based on the actual machining size and shape parameter of the automobile part product, the target automobile part machining size and shape text information, and the scientific construction of the automobile part manufacturing quality inspection information based on the actual machining size and shape parameter of the automobile part product, the target automobile part machining size and shape text information, and the scientific construction of the automobile part manufacturing quality inspection information. The accurate collection of the size tolerance and shape tolerance of the automobile part theoretical design and actual machining, and the automobile part product actual machining size and shape quality information are realized, and the automobile part manufacturing quality inspection result is outputted by combining the automobile part manufacturing management platform and the display screen self-visual display, the feedback efficiency and the intuitiveness of the automobile part manufacturing quality inspection result are improved.

[0089] Embodiment 2:

[0090] Please refer to Figure 1 - Figure 2 A data-based automobile part manufacturing analysis system for realizing a data-based automobile part manufacturing analysis method, the system comprising an automobile part design data processing module, an automobile part machining data processing module, and an automobile part manufacturing quality analysis module.

[0091] The automobile part design data processing module comprises an automobile part machining CAD drawing information acquisition unit, an automobile part machining size and shape CAD drawing information acquisition unit, an automobile part machining size and shape CAD measurement sequence instruction storage unit, a target automobile part machining size and shape CAD measurement sequence instruction search unit, an automobile part machining size and shape information storage unit, and a target automobile part machining size and shape information search unit.

[0092] The automobile part processing CAD drawing information acquisition unit acquires automobile part processing CAD drawing data through an automobile part manufacturing management platform; the automobile part processing size and shape CAD drawing information acquisition unit acquires automobile part processing size and shape CAD drawing data through the automobile part manufacturing management platform; the automobile part processing size and shape CAD measurement sequence instruction storage unit is used for storing automobile part processing size and shape CAD measurement sequence instruction data; the target automobile part processing size and shape CAD measurement sequence instruction search unit performs CAD execution instruction information search processing for size tolerance and shape tolerance measurement in automobile part processing drawings according to automobile part processing CAD drawing data and automobile part processing size and shape CAD measurement sequence instruction data, and generates target automobile part processing size and shape CAD measurement sequence instruction data; the automobile part processing size and shape information storage unit is used for storing automobile part processing size and shape text data; the target automobile part processing size and shape information search unit performs automobile part processing drawing size tolerance and shape tolerance design requirement text information search processing based on automobile part processing CAD drawing data and automobile part processing size and shape text data, and generates target automobile part processing size and shape text data.

[0093] The automobile part processing data processing module includes an automobile part product three-dimensional entity model acquisition unit, an automobile part product two-dimensional part structure CAD drawing information generation unit, an automobile part product two-dimensional processing CAD drawing information generation unit, and an automobile part product actual processing size and shape information measurement unit.

[0094] The automobile part product three-dimensional entity model acquisition unit acquires automobile part product three-dimensional entity model data through a three-dimensional laser scanner; the automobile part product two-dimensional part structure CAD drawing information generation unit constructs and processes two-dimensional part structure CAD drawing data of an automobile part product according to automobile part product three-dimensional entity model data combined with automobile part processing CAD drawing data, generates automobile part product two-dimensional part structure CAD drawing data; the automobile part product two-dimensional processing CAD drawing information generation unit performs CAD drawing matching processing of product processing dimensional tolerance and geometric tolerance in two-dimensional part structure CAD drawings of an automobile part product according to automobile part processing CAD drawing data, automobile part processing dimensional and geometric CAD drawing data, and automobile part product two-dimensional part structure CAD drawing data, generates automobile part product two-dimensional processing CAD drawing data; the automobile part product actual processing dimensional and geometric information measurement unit performs actual processing dimensional tolerance and geometric tolerance parameter measurement processing of an automobile part product according to automobile part product two-dimensional processing CAD drawing data and target automobile part processing dimensional and geometric CAD measurement sequence instruction data, generates automobile part product actual processing dimensional and geometric data.

[0095] The automobile part manufacturing quality analysis module includes an automobile part product actual processing geometric quality analysis unit, an automobile part manufacturing quality inspection information construction unit, and an automobile part manufacturing quality inspection information display unit.

[0096] The automobile part product actual processing geometric quality analysis unit performs processing quality analysis processing of actual dimensional tolerance and geometric tolerance of an automobile part product according to automobile part product actual processing dimensional and geometric data and target automobile part processing dimensional and geometric text data, generates automobile part product actual processing dimensional and geometric quality analysis data; the automobile part manufacturing quality inspection information construction unit is used to construct automobile part manufacturing quality inspection data; the automobile part manufacturing quality inspection information display unit displays automobile part manufacturing quality inspection results according to automobile part manufacturing quality inspection data combined with an automobile part manufacturing management platform and a display screen.

[0097] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A data-driven method for analyzing automotive parts manufacturing, characterized in that, The method includes the following steps: S1. Collect CAD drawing data for automotive parts processing and CAD drawing data for automotive parts processing dimensions and positions; S2. Based on the automotive parts processing CAD drawing data and the automotive parts processing dimension and position CAD measurement sequence instruction data, the KD tree nearest neighbor search algorithm is used to search and process the CAD execution instruction information for dimensional tolerance and position tolerance measurement in the automotive parts processing drawings to generate the target automotive parts processing dimension and position CAD measurement sequence instruction data. S3. Based on the automotive parts processing CAD drawing data and automotive parts processing dimension and position text data, a unified cost search algorithm is used to search and process the text information of dimensional tolerance and geometric tolerance design requirements in the automotive parts processing drawings to generate target automotive parts processing dimension and position text data. S4. Collect the three-dimensional solid model data of the automotive parts and combine it with the automotive parts processing CAD drawing data to construct and process the CAD drawing data of the two-dimensional part structure of the automotive parts, and generate the CAD drawing data of the two-dimensional part structure of the automotive parts. S5. Based on the automotive parts processing CAD drawing data, the automotive parts processing dimension and position CAD drawing data, and the automotive parts product two-dimensional component structure CAD drawing data, match the CAD drawings of product processing dimension tolerances and position tolerances in the two-dimensional component structure CAD drawings of the automotive parts product to generate automotive parts product two-dimensional processing CAD drawing data. Combine the target automotive parts processing dimension and position CAD measurement sequence instruction data to measure and process the actual processing dimension tolerances and position tolerance parameters of the automotive parts product to generate automotive parts product actual processing dimension and position data. S6. Based on the actual processing dimensions and form and position data of the automotive parts and the text data of the processing dimensions and form and position of the target automotive parts, analyze and process the processing quality of the actual dimensional tolerances and form and position tolerances of the automotive parts to generate actual processing dimensions and form and position quality analysis data of the automotive parts. S7. Construct automotive parts manufacturing quality inspection data and execute the automotive parts manufacturing quality inspection result display operation.

2. The data-based automotive parts manufacturing analysis method according to claim 1, characterized in that: S1 includes the following steps: S11. Users input theoretical design mechanical CAD drawing information for automotive parts processing online through the data input terminal of the automotive parts manufacturing management platform, and generate automotive parts processing CAD drawing data. ; Users input mechanical CAD drawing information containing dimensions, dimensional tolerances, and geometric tolerances of automotive parts through the data input terminal of the automotive parts manufacturing management platform, and the platform generates CAD drawing data for automotive parts machining dimensions and geometric tolerances. .

3. The data-based automotive parts manufacturing analysis method according to claim 2, characterized in that: S2 includes the following steps: S21. Establish a data set matrix of CAD measurement sequence instructions for the machining dimensions and positions of automotive parts. , ;in Indicates the first A set of CAD measurement sequence instructions for the machining dimensions and positions of various automotive parts, corresponding to different types of automotive parts machining drawing objects. This represents the maximum number of object types in automotive parts machining drawings, where , , This represents the set of CAD measurement sequence instructions for the machining dimensions of the automotive parts. The Middle Data on the CAD measurement sequence of dimensions and positions for the machining of automotive parts. This represents the set of CAD measurement sequence instructions for the machining dimensions of the automotive parts. The maximum number of CAD measurement sequence instructions for the dimensions and positions of automotive parts in China; S22. The KD-tree nearest neighbor search algorithm is used to... With the The above Perform feature matching on CAD drawings for automotive parts processing to search for the aforementioned The corresponding And through data identification, a set of CAD measurement sequence instructions for the processing dimensions and positions of target automotive parts is generated. ,in Indicates the first CAD measurement sequence instructions for the processing dimensions and positions of target automotive parts.

4. The data-based automotive parts manufacturing analysis method according to claim 3, characterized in that: S3 includes the following steps: S31. Establish a matrix of text data sets for the processing dimensions and positions of automotive parts. ,in Indicates the first This is a collection of automotive parts machining dimension and position text data corresponding to various automotive parts machining drawing object types. , This represents the set of text data representing the machining dimensions and positions of the automotive parts. The Middle Textual data on the dimensions and positions of individual automotive parts during processing; S32. The unified cost search algorithm is used to... With the The above Perform feature matching on CAD drawings for automotive parts processing to search for the aforementioned The corresponding And through data identification, generate text data of the processing dimensions and positions of the target automotive parts. ,in Indicates the first Textual data on the dimensions and positions of target automotive parts during machining.

5. The data-based automotive parts manufacturing analysis method according to claim 4, characterized in that: S4 includes the following steps: S41. Use a 3D laser scanner to collect online the parameters of the 3D solid model of automotive parts manufactured based on CAD drawings for automotive parts processing, and generate 3D solid model data of the automotive parts. ; S42, the above Import the CAD software and run it, converting the 3D component structure of the automotive parts into 2D component structure CAD drawings, until the generated 2D component structure CAD drawings match the original specifications. The 2D component structure CAD views are completely matched, and the successfully matched 2D component structure CAD drawings are converted and, after data identification, generated as 2D component structure CAD drawing data for automotive parts products. .

6. The data-based automotive parts manufacturing analysis method according to claim 5, characterized in that: S5 includes the following steps: S51, the above The above and stated All were imported into the CAD software and run, and the running status was recorded. With the Perform CAD drawing combination processing until the combined CAD drawing matches the stated... The CAD drawings in the data are fully matched, and the successfully matched CAD drawings are used to generate 2D machining CAD drawing data for automotive parts products through data identification. ; S52, CAD software according to the above The above According to the CAD measurement sequence instruction number of the target automotive parts' machining dimensions and positions, the... The actual machining dimensional tolerances or geometrical tolerances of automotive parts are measured in an orderly manner, and the measured actual machining dimensional tolerances or geometrical tolerances of automotive parts are constructed into a set of actual machining dimensional and geometrical data of automotive parts. ,in Indicates the first The one mentioned The actual processing dimensions and positional data of the corresponding automotive parts.

7. The data-based automotive parts manufacturing analysis method according to claim 6, characterized in that: S6 includes the following steps: S61, Obtain the and stated ; S62, the above The above According to the target automotive parts machining dimension and position CAD measurement sequence instruction number and the above The above Perform a comparison of dimensional tolerance or geometric tolerance values ​​within a specified range, and generate a dataset of actual dimensional and geometric quality analysis data for automotive parts based on the comparison results. ,in Indicates the Corresponding automotive parts product actual processing dimensions, shape and position quality analysis data; Then output the actual machining dimensions, shape, position, and quality analysis data of automotive parts. It is qualified; Then output the actual machining dimensions, shape, position, and quality analysis data of automotive parts. This is not up to standard.

8. The data-based automotive parts manufacturing analysis method according to claim 7, characterized in that: S7 includes the following steps: S71, the above The above and stated By combining the data, we can construct quality inspection data for automotive parts manufacturing. ; S72, the generated... The data is transmitted to the automotive parts manufacturing management platform via the Internet of Things (IoT) communication network, and displayed on the screen to show the quality inspection results of automotive parts manufacturing.

9. A data-based automotive parts manufacturing analysis system, used to implement the data-based automotive parts manufacturing analysis method according to any one of claims 1-8, characterized in that: The system includes an automotive parts design data processing module, an automotive parts processing data processing module, and an automotive parts manufacturing quality analysis module.

Images