Data-based automobile part manufacturing analysis method and system

Abstract

The invention relates to the technical field of automobile part manufacturing data analysis, and discloses a data-based automobile part manufacturing analysis method and system, and the system comprises an automobile part design data processing module, an automobile part processing data processing module, and an automobile part manufacturing quality analysis module. The method comprises the following steps: scientifically constructing two-dimensional machining CAD drawing parameters of an automobile part product by combining CAD software according to the machining CAD drawing parameters of the automobile part, the machining size, shape and position CAD drawing parameters of the automobile part and the two-dimensional part structure CAD drawing parameters of the automobile part product, and realizing numerical accurate establishment of the two-dimensional machining CAD drawing parameters of the automobile part product; accurate measurement of actual machining dimensional tolerance and form and location tolerance parameters of the automobile part product is carried out according to two-dimensional machining CAD drawing parameters of the automobile part product in combination with CAD software and target automobile part machining size form and location CAD measurement sequence instruction parameters, and the efficiency and precision of automobile part manufacturing quality inspection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of data analysis in the manufacturing of automotive parts, and specifically provides a data-based analysis method and system for the manufacturing of automotive parts. Background Art

[0002] The manufacturing of automotive parts is an important part of the automotive manufacturing industry, which involves the processing, assembly and inspection of various parts. These parts include engines, transmissions, suspension systems, braking systems, bodies, seats, etc. The manufacturing of automotive parts includes the following main steps: 1. Research and development and design: According to the requirements and technical specifications of automotive manufacturers, the R & D department will design new samples of automotive parts. Designers need to consider factors such as the performance, reliability and cost of the parts. 2. Raw material procurement: Automotive parts manufacturers need to purchase various raw materials from suppliers, such as steel, aluminum, plastics, etc. 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 stamping machines, welding machines, heat treatment equipment, etc. At the same time, train employees to ensure that they are familiar with the production process and requirements of new products. 4. Processing and manufacturing: According to the product design drawings and production plans, employees use various mechanical equipment to process raw materials into the required parts. 5. Quality control: During the production process, quality inspectors will check each part to ensure that they meet the quality standards. If unqualified products are found, they need to be reworked or scrapped immediately. 6. Assembly and integration: Assemble the processed parts according to the design requirements to form a complete automotive system or vehicle. 7. Inspection and testing: After assembly, various performance tests need to be carried out on automotive parts and vehicles, such as durability, safety, fuel efficiency, etc., to ensure that they meet the needs of customers and users. For existing automotive part products, quality inspectors need to conduct quality inspections on the processing quality of parts based on the size, dimensional tolerance, and geometric tolerance information marked on mechanical design drawings. Manually inspecting the processing quality of automotive part products not only easily causes misinspection, but also has low inspection efficiency and cannot visually and efficiently feedback inspection results.

[0003] The Chinese patent application with the publication number CN114186359A discloses a method and system for intelligent analysis of the manufacturability of mechanical products. By obtaining the drawing data and processing samples of the product, one or more processing procedures of the product are analyzed, and all the processing equipment involved in the processing procedure and the processing parameters and limitations of each processing equipment are searched; based on the drawing data, processing parameters and limitations, the manufacturability of the product is analyzed under preset manufacturability conditions to realize the intelligent design analysis of the manufacturability of the product; however, the above technical solutions cannot realize the autonomous inspection and analysis of the processing dimensions of mechanical products, reducing the efficiency and quality of the processing quality inspection of mechanical products. Summary of the Invention

[0004] (1) Technical problem to be solved

[0005] To solve the problem that for the existing automotive parts products, quality inspectors need to perform product processing quality inspection based on the dimension, dimensional tolerance, and geometric tolerance information of the parts marked on the mechanical design drawings. Manual quality inspection of automotive parts products is not only prone to misinspection, but also has low inspection efficiency and cannot visually and efficiently feedback the inspection results. The purpose is to realize online collection of automotive parts processing CAD drawing data, accurately obtain automotive parts processing dimension and geometric CAD drawing data, intelligently match automotive parts processing dimension and geometric CAD measurement sequence instructions, scientifically search for automotive parts processing dimension and geometric tolerance data, scientifically establish a three-dimensional solid model of automotive parts products, accurately generate two-dimensional part structure CAD drawing data of automotive parts products, independently construct two-dimensional processing CAD drawing data of automotive parts products, accurately measure the actual processing dimension and geometric data of automotive parts products, scientifically analyze the actual processing dimension and geometric quality of automotive parts products, and visually feedback the actual processing dimension and geometric quality of automotive parts products.

[0006] (2) Technical solution

[0007] The present invention is achieved through the following technical solutions: A data-based analysis method for manufacturing automotive parts, the method comprising the following steps:

[0008] S1. Collect automotive parts processing CAD drawing data and automotive parts processing dimension and geometric CAD drawing data;

[0009] S2. Perform search and processing of CAD execution instruction information for measuring dimensional tolerance and geometric tolerance in the automotive parts processing drawing according to the automotive parts processing CAD drawing data and the automotive parts processing dimension and geometric CAD measurement sequence instruction data, and generate target automotive parts processing dimension and geometric CAD measurement sequence instruction data;

[0010] S3. Perform search and processing of text information on design requirements for dimensional tolerance and geometric tolerance in the automotive parts processing drawing based on the automotive parts processing CAD drawing data and the automotive parts processing dimension and geometric text data, and generate target automotive parts processing dimension and geometric text data;

[0011] S4. Collect three-dimensional solid model data of automotive parts products and perform CAD drawing data construction processing on the two-dimensional part structure of automotive parts products in combination with the automotive parts processing CAD drawing data to generate two-dimensional part structure CAD drawing data of automotive parts products;

[0012] S5. Perform CAD drawing matching processing on the product processing dimensional tolerances and geometric tolerances in the 2D component structure CAD drawing of the automotive component product based on the automotive component processing CAD drawing data, the automotive component processing dimensional and geometric CAD drawing data, and the 2D component structure CAD drawing data of the automotive component product, generate 2D processing CAD drawing data of the automotive component product, and perform actual processing dimensional tolerance and geometric tolerance parameter measurement processing on the automotive component product with the target automotive component processing dimensional and geometric CAD measurement sequence instruction data to generate actual processing dimensional and geometric data of the automotive component product;

[0013] S6. Perform processing quality analysis on the actual dimensional tolerances and geometric tolerances of the automotive component product based on the actual processing dimensional and geometric data of the automotive component product and the target automotive component processing dimensional and geometric text data to generate actual processing dimensional and geometric quality analysis data of the automotive component product;

[0014] S7. Construct quality inspection data for automotive component manufacturing and execute the operation of displaying the quality inspection results of automotive component manufacturing.

[0015] Preferably, the operation steps for collecting the automotive component processing CAD drawing data and the automotive component processing dimensional and geometric CAD drawing data are as follows:

[0016] S11. The user inputs the theoretical design mechanical CAD drawing information for automotive component processing online through the data input end of the automotive component manufacturing management platform and generates automotive component processing CAD drawing data A;

[0017] The user inputs the mechanical CAD drawing information of the dimensions, dimensional tolerances, and geometric tolerances marked in the theoretical design of automotive component processing online through the data input end of the automotive component manufacturing management platform and generates automotive component processing dimensional and geometric CAD drawing data A 尺寸 。

[0018] Preferably, the operation steps for performing CAD execution instruction information search processing on the dimensional tolerances and geometric tolerances in the automotive component processing drawing based on the automotive component processing CAD drawing data and the automotive component processing dimensional and geometric CAD measurement sequence instruction data to generate the target automotive component processing dimensional and geometric CAD measurement sequence instruction data are as follows:

[0019] S21. Establish a matrix B=(B1,…,B p ,…,B θ ) of the automotive component processing dimensional and geometric CAD measurement sequence instruction data set, where p = 1, 2, 3, …, θ; among which B pDenote the set of automotive part machining dimension and geometric CAD measurement sequence instruction data corresponding to the p-th type of automotive part machining drawing object type, and θ denote the maximum value of the number of automotive part machining drawing object types, where b p,o Denote the set of automotive part machining dimension and geometric CAD measurement sequence instruction data B p The o-th automotive part machining dimension and geometric CAD measurement sequence instruction data in Denote the set of automotive part machining dimension and geometric CAD measurement sequence instruction data B p The maximum value of the number of automotive part machining dimension and geometric CAD measurement sequence instructions in; the automotive part machining drawing object type represents the CAD machining drawing object types of automotive parts with different shapes and different dimensional requirements; the automotive part machining dimension and geometric CAD measurement sequence instruction data represents the CAD dimension tolerance or geometric tolerance measurement sequence execution instruction parameters for measuring the dimensional tolerance parameters or geometric tolerance parameters of the actual machining of automotive parts set by automotive part manufacturing enterprises according to the machining CAD drawing standards of different types of automotive parts manufactured by the enterprise.

[0020] S22. Use the K-D tree nearest neighbor search algorithm to perform feature matching between the automotive part machining CAD drawing data A and the set of automotive part machining dimension and geometric CAD measurement sequence instruction data B in the matrix B of the set of automotive part machining dimension and geometric CAD measurement sequence instruction data p To search for the set of automotive part machining dimension and geometric CAD measurement sequence instruction data B corresponding to the automotive part machining CAD drawing data A p And generate a target set of automotive part machining dimension and geometric CAD measurement sequence instruction data through data identification Where b' o Denote the o-th target automotive part machining dimension and geometric CAD measurement sequence instruction data.

[0021] Preferably, the operating steps for searching and processing the text information of the dimensional tolerance and geometric tolerance design requirements in the automotive part machining drawing based on the automotive part machining CAD drawing data and the automotive part machining dimension and geometric text data to generate the target automotive part machining dimension and geometric text data are as follows:

[0022] S31. Establish a matrix C of the set of automotive part machining dimension and geometric text data = (C1,…,C p ,…,C θ ), where C pDenote the set of automotive component machining dimension and geometric tolerance text data corresponding to the p-th type of automotive component machining drawing object, where c p,o denotes the set of automotive component machining dimension and geometric tolerance text data C of the above p and the o-th automotive component machining dimension and geometric tolerance text data in it; the automotive component machining dimension and geometric tolerance text data represents the specific automotive component machining standard dimension tolerance text information or standard geometric tolerance text information set by the automotive component manufacturing enterprise according to the machining CAD drawing standards of different types of automotive components manufactured by the enterprise.

[0023] S32. Use the uniform cost search algorithm to perform automotive component machining CAD drawing feature matching between the automotive component machining CAD drawing data A and the set of automotive component machining dimension and geometric tolerance text data C in the matrix C of the set of automotive component machining dimension and geometric tolerance text data, and search for the set of automotive component machining dimension and geometric tolerance text data C corresponding to the automotive component machining CAD drawing data A p and generate the target automotive component machining dimension and geometric tolerance text data through data identification p where c′ represents the o-th target automotive component machining dimension and geometric tolerance text data. o

[0024] Preferably, the operation steps for collecting the three-dimensional solid model data of the automotive component product and combining it with the automotive component machining CAD drawing data to perform the CAD drawing data construction process of the two-dimensional component structure of the automotive component product to generate the two-dimensional component structure CAD drawing data of the automotive component product are as follows:

[0025] S41. Online collect the three-dimensional modeling solid model parameters of the automotive component product manufactured based on the automotive component machining CAD drawing through a three-dimensional laser scanner, and generate the three-dimensional solid model data Q of the automotive component product;

[0026] S42. Import the three-dimensional solid model data Q of the automotive component product into CAD software for operation, and convert the three-dimensional component structure of the automotive component product in the running state into a two-dimensional component structure CAD drawing until the generated two-dimensional component structure CAD drawing completely matches the two-dimensional component structure CAD view in the automotive component machining CAD drawing data A, and the successfully converted and matched two-dimensional component structure CAD drawing is used to generate the two-dimensional component structure CAD drawing data W of the automotive component product through data identification. The two-dimensional component structure CAD drawing data of the automotive component product includes the basic view CAD drawing data, auxiliary view CAD drawing data, and sectional view CAD drawing data of the automotive component product. ​

[0027] Preferably, the following operating steps are taken for the CAD drawing matching process of the product processing dimensional tolerance and geometric tolerance in the 2D part structure CAD drawing of the automotive part product according to the automotive part processing CAD drawing data, the automotive part processing dimensional and geometric CAD drawing data, and the 2D part structure CAD drawing data of the automotive part product, generating the 2D processing CAD drawing data of the automotive part product and performing the measurement process on the actual processing dimensional tolerance and geometric tolerance parameters of the automotive part product with the target automotive part processing dimensional and geometric CAD measurement sequence instruction data to generate the actual processing dimensional and geometric data of the automotive part product:

[0028] S51. Import the automotive part processing CAD drawing data A, the automotive part processing dimensional and geometric CAD drawing data A 尺寸 and the 2D part structure CAD drawing data W of the automotive part product into the CAD software for operation, and perform the CAD drawing combination process on the automotive part processing dimensional and geometric CAD drawing data A 尺寸 in the running state with the 2D part structure CAD drawing data W of the automotive part product until the CAD drawing generated by the combination completely matches the CAD drawing features in the automotive part processing CAD drawing data A, and generate the 2D processing CAD drawing data R of the automotive part product by data identification for the successfully combined and matched CAD drawing;

[0029] S52. The CAD software sequentially executes the measurement operation on the actual processing dimensional tolerance or geometric tolerance parameters of the automotive part product according to the target automotive part processing dimensional and geometric CAD measurement sequence instruction data b' in the target automotive part processing dimensional and geometric CAD measurement sequence instruction data set B' o in accordance with the target automotive part processing dimensional and geometric CAD measurement sequence instruction number on the 2D processing CAD drawing data R of the automotive part product, and construct the actual processing dimensional and geometric tolerance parameters of the measured automotive part product into the actual processing dimensional and geometric data set of the automotive part product where e o represents the actual processing dimensional and geometric data of the automotive part product corresponding to the o-th target automotive part processing dimensional and geometric CAD measurement sequence instruction data b'. o

[0030] Preferably, the following operating steps are taken for the processing quality analysis process of the actual dimensional tolerance and geometric tolerance of the automotive part product according to the actual processing dimensional and geometric data of the automotive part product and the target automotive part processing dimensional and geometric text data to generate the actual processing dimensional and geometric quality analysis data of the automotive part product: ​

[0031] S61. Obtain the target automotive component processing dimension and geometric tolerance text data C' and the set E of actual processing dimension and geometric tolerance data of the automotive component product;

[0032] S62. Compare the actual processing dimension and geometric tolerance data e of the automotive component product in the set E of actual processing dimension and geometric tolerance data of the automotive component product o with the target automotive component processing dimension and geometric tolerance text data c′ in the target automotive component processing dimension and geometric tolerance text data C' according to the target automotive component processing dimension and geometric tolerance CAD measurement sequence instruction number, and generate a set of actual processing dimension and geometric tolerance quality analysis data of the automotive component product based on the comparison result of the dimension tolerance or geometric tolerance numerical value o where f represents the actual processing dimension and geometric tolerance quality analysis data of the automotive component product corresponding to the actual processing dimension and geometric tolerance data e of the automotive component product o ; o When e

[0033] ∈c′ o o , it means that the actual processing dimension tolerance or geometric tolerance of the automotive component product meets the requirements of the automotive component processing theoretical design dimension tolerance or geometric tolerance standard, and the actual processing dimension and geometric tolerance quality analysis data f of the automotive component product is output o as qualified;

[0034] When

[0035] it means that the actual processing dimension tolerance or geometric tolerance of the automotive component product does not meet the requirements of the automotive component processing theoretical design dimension tolerance or geometric tolerance standard, and the actual processing dimension and geometric tolerance quality analysis data f of the automotive component product is output o

[0035] as unqualified.

[0036] Preferably, the operation steps of constructing the quality inspection data of the automotive component manufacturing and performing the quality inspection result display operation of the automotive component manufacturing are as follows:

[0037] S71. Combine the target automotive component processing dimension and geometric tolerance text data C', the set E of actual processing dimension and geometric tolerance data of the automotive component product, and the set F of actual processing dimension and geometric tolerance quality analysis data of the automotive component product to construct the quality inspection data K of the automotive component manufacturing, where K=(C',E,F);

[0038] A data-based automotive component manufacturing analysis system for implementing the data-based automotive component manufacturing analysis method. The system includes an automotive component design data processing module, an automotive component processing data processing module, and an automotive component manufacturing quality analysis module;

[0039] The automotive component design data processing module includes an automotive component processing CAD drawing information acquisition unit, an automotive component processing dimensional and geometric CAD drawing information acquisition unit, an automotive component processing dimensional and geometric CAD measurement sequence instruction storage unit, a target automotive component processing dimensional and geometric CAD measurement sequence instruction search unit, an automotive component processing dimensional and geometric information storage unit, and a target automotive component processing dimensional and geometric information search unit;

[0040] The automotive component processing CAD drawing information acquisition unit acquires automotive component processing CAD drawing data through the automotive component manufacturing management platform; the automotive component processing dimensional and geometric CAD drawing information acquisition unit acquires automotive component processing dimensional and geometric CAD drawing data through the automotive component manufacturing management platform; the automotive component processing dimensional and geometric CAD measurement sequence instruction storage unit is used to store automotive component processing dimensional and geometric CAD measurement sequence instruction data; the target automotive component processing dimensional and geometric CAD measurement sequence instruction search unit performs search processing on CAD execution instruction information for measuring dimensional tolerances and geometric tolerances in the automotive component processing drawing based on the automotive component processing CAD drawing data and the automotive component processing dimensional and geometric CAD measurement sequence instruction data, and generates target automotive component processing dimensional and geometric CAD measurement sequence instruction data; the automotive component processing dimensional and geometric information storage unit is used to store automotive component processing dimensional and geometric text data; the target automotive component processing dimensional and geometric information search unit performs search processing on text information of design requirements for dimensional tolerances and geometric tolerances in the automotive component processing drawing based on the automotive component processing CAD drawing data and the automotive component processing dimensional and geometric text data, and generates target automotive component processing dimensional and geometric text data;

[0041] The automotive component processing data processing module includes an automotive component product three-dimensional solid model acquisition unit, an automotive component product two-dimensional component structure CAD drawing information generation unit, an automotive component product two-dimensional processing CAD drawing information generation unit, and an automotive component product actual processing dimensional and geometric information measurement unit;

[0042] The three-dimensional solid model acquisition unit of the automotive parts product collects the three-dimensional solid model data of the automotive parts product through a three-dimensional laser scanner; the two-dimensional parts structure CAD drawing information generation unit of the automotive parts product constructs and processes the CAD drawing data of the two-dimensional parts structure of the automotive parts product based on the three-dimensional solid model data of the automotive parts product in combination with the CAD drawing data of the automotive parts processing, and generates the CAD drawing data of the two-dimensional parts structure of the automotive parts product; the two-dimensional processing CAD drawing information generation unit of the automotive parts product performs CAD drawing matching processing of the product processing dimensional tolerances and geometric tolerances in the two-dimensional parts structure CAD drawing of the automotive parts product according to the CAD drawing data of the automotive parts processing, the CAD drawing data of the dimensional and geometric tolerances of the automotive parts processing, and the CAD drawing data of the two-dimensional parts structure of the automotive parts product, and generates the CAD drawing data of the two-dimensional processing of the automotive parts product; the actual processing dimensional and geometric information measurement unit of the automotive parts product measures the actual processing dimensional tolerances and geometric tolerance parameters of the automotive parts product according to the CAD drawing data of the two-dimensional processing of the automotive parts product and the target automotive parts processing dimensional and geometric CAD measurement sequence instruction data, and generates the actual processing dimensional and geometric data of the automotive parts product;

[0043] The automotive parts manufacturing quality analysis module includes an actual processing geometric quality analysis unit of the automotive parts product, a quality inspection information construction unit of the automotive parts manufacturing quality, and a quality inspection information display unit of the automotive parts manufacturing quality;

[0044] The actual processing geometric quality analysis unit of the automotive parts product performs processing quality analysis of the actual dimensional tolerances and geometric tolerances of the automotive parts product according to the actual processing dimensional and geometric data of the automotive parts product and the target automotive parts processing dimensional and geometric text data, and generates the actual processing dimensional and geometric quality analysis data of the automotive parts product; the quality inspection information construction unit of the automotive parts manufacturing quality is used to construct the quality inspection data of the automotive parts manufacturing quality; the quality inspection information display unit of the automotive parts manufacturing quality executes the quality inspection result display operation of the automotive parts manufacturing quality according to the quality inspection data of the automotive parts manufacturing quality in combination with the automotive parts manufacturing management platform and the display screen.

[0045] (III) Beneficial effects

[0046] The present invention provides a data-based automotive parts manufacturing analysis method and system. It has the following beneficial effects:

[0047] 1. Accurately collect the machining CAD drawing parameters and machining dimensional and geometric CAD drawing parameters of automotive parts online through the automotive parts manufacturing management platform, providing real data support for subsequent intelligent and accurate measurement of the actual machining dimensional tolerances and geometric tolerances of automotive parts; based on the machining CAD drawing parameters of automotive parts, combine intelligent search algorithms with the CAD measurement sequence instruction parameters of machining dimensional and geometric CAD of automotive parts stored in big data to accurately search for the CAD execution instruction information for measuring dimensional tolerances and geometric tolerances in the machining drawings of automotive parts, realize intelligent matching of CAD measurement instructions for machining dimensional tolerances and geometric tolerances of different types of automotive parts, and achieve autonomous and efficient measurement of the actual machining dimensional tolerances and geometric tolerances of automotive parts; based on the machining CAD drawing parameters of automotive parts, combine intelligent search algorithms with the standard-set machining dimensional and geometric text parameters of automotive parts to scientifically search for the design parameters of dimensional tolerances and geometric tolerances in the machining drawings of automotive parts, realize accurate search for the theoretical design dimensional tolerances and geometric tolerance parameters of different types of parts, output the dimensional tolerances and geometric tolerance information in the machining CAD drawings of automotive parts accurately as the text information of machining dimensional tolerances and geometric tolerances of automotive parts, and realize intelligent acquisition of the theoretical design dimensional tolerances and geometric tolerance parameters of automotive parts machining.

[0048] 2. Efficiently collect the three-dimensional solid model parameters of automotive part products through a three-dimensional laser scanner, combine with CAD software and the machining CAD drawing parameters of automotive parts to autonomously and dynamically and accurately construct the CAD drawings of the two-dimensional part structures of automotive part products, and numerically establish the CAD drawing parameters of the two-dimensional part structures of automotive part products; according to the machining CAD drawing parameters, machining dimensional and geometric CAD drawing parameters of automotive parts and the CAD drawing parameters of the two-dimensional part structures of automotive part products, combine with CAD software to scientifically construct the two-dimensional machining CAD drawing parameters of automotive part products, and numerically and autonomously and accurately establish the two-dimensional machining CAD drawing parameters of automotive part products; based on the two-dimensional machining CAD drawing parameters of automotive part products, combine with CAD software and the CAD measurement sequence instruction parameters of the machining dimensional and geometric CAD of the target automotive parts to accurately measure the actual machining dimensional tolerances and geometric tolerance parameters of automotive part products, realize intelligent measurement of the actual machining dimensional tolerances and geometric tolerance parameters of automotive part products, and improve the efficiency and accuracy of quality inspection in automotive parts manufacturing.

[0049] III. By combining numerical analysis based on the actual machining dimensional and geometric parameters of automotive component products and the dimensional and geometric text information of target automotive component machining sizes, scientifically analyze the actual dimensional tolerances and geometric tolerances of automotive component products, and achieve accurate and reliable analysis of the manufacturing quality of dimensional tolerances and geometric tolerances of automotive components; Based on the actual machining dimensional and geometric parameters of automotive component products, the dimensional and geometric text information of target automotive component machining sizes, and the analysis results of the actual machining dimensional and geometric quality of automotive component products, scientifically construct the quality inspection information for the manufacturing quality of automotive components, achieve accurate collection of the dimensional tolerances and geometric tolerances of the theoretical design and actual machining of automotive components and the actual machining dimensional and geometric quality information of automotive component products, and at the same time, combine the automotive component manufacturing management platform and the display screen to autonomously and visually display and output the quality inspection results of automotive component manufacturing, improving the feedback efficiency and intuitiveness of the quality inspection results of automotive component manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 FIG. is a schematic diagram of the modules of a data-based automotive component manufacturing analysis system provided by the present invention;

[0051] Figure 2 FIG. is a flowchart of a data-based automotive component manufacturing analysis method provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] Embodiments of the data-based automotive component manufacturing analysis method and system are as follows:

[0054] Embodiment 1:

[0055] Please refer to Figure 1 - Figure 2 , a data-based automotive component manufacturing analysis method, the method includes the following steps:

[0056] S1. Collect the CAD drawing data of automotive component machining and the dimensional and geometric CAD drawing data of automotive component machining;

[0057] S2. Search and process the CAD execution instruction information for measuring dimensional tolerances and geometric tolerances in the automotive component machining drawing according to the CAD drawing data of automotive component machining and the dimensional and geometric CAD measurement sequence instruction data of automotive component machining, and generate the dimensional and geometric CAD measurement sequence instruction data of target automotive component machining;

[0058] S3. Search and process the text information of the dimensional tolerance and geometric tolerance design requirements in the machining drawings of auto parts based on the CAD drawing data of auto part machining and the dimensional and geometric text data of auto part machining, and generate the target dimensional and geometric text data of auto part machining;

[0059] S4. Collect the 3D solid model data of auto parts products and perform the CAD drawing data construction process of the 2D part structure of auto parts products in combination with the CAD drawing data of auto part machining to generate the CAD drawing data of the 2D part structure of auto parts products;

[0060] S5. Perform the CAD drawing matching process of the product machining dimensional tolerance and geometric tolerance in the 2D part structure CAD drawing of auto parts products based on the CAD drawing data of auto part machining, the dimensional and geometric CAD drawing data of auto part machining, and the CAD drawing data of the 2D part structure of auto parts products, generate the 2D machining CAD drawing data of auto parts products, and perform the measurement process of the actual machining dimensional tolerance and geometric tolerance parameters of auto parts products with the target dimensional and geometric CAD measurement sequence instruction data of auto part machining to generate the actual machining dimensional and geometric data of auto parts products;

[0061] S6. Perform the machining quality analysis process of the actual dimensional tolerance and geometric tolerance of auto parts products based on the actual machining dimensional and geometric data of auto parts products and the target dimensional and geometric text data of auto part machining to generate the actual machining dimensional and geometric quality analysis data of auto parts products;

[0062] S7. Construct the quality inspection data of auto part manufacturing and execute the operation of displaying the quality inspection results of auto part manufacturing.

[0063] Further, please refer to Figure 1 - Figure 2 , and the operation steps for collecting the CAD drawing data of auto part machining and the dimensional and geometric CAD drawing data of auto part machining are as follows:

[0064] S11. The user inputs the theoretical design mechanical CAD drawing information of auto part machining online through the data input end of the auto part manufacturing management platform and generates the CAD drawing data A of auto part machining;

[0065] The user inputs the mechanical CAD drawing information of the dimensions, dimensional tolerances, and geometric tolerances marked in the theoretical design of auto part machining online through the data input end of the auto part manufacturing management platform and generates the dimensional and geometric CAD drawing data A of auto part machining 尺寸 .

[0066] Search and process the CAD execution instruction information for measuring dimensional tolerances and geometric tolerances in the automotive component processing drawing based on the CAD drawing data of automotive component processing and the CAD measurement sequence instruction data of the dimensional and geometric dimensions of automotive component processing, and the operation steps for generating the target CAD measurement sequence instruction data of the dimensional and geometric dimensions of automotive component processing are as follows:

[0067] S21. Establish a matrix B=(B1,…,B p ,…,B θ ) of the CAD measurement sequence instruction data set for the dimensional and geometric dimensions of automotive component processing, where p = 1, 2, 3, …, θ; where B p represents the CAD measurement sequence instruction data set corresponding to the p-th type of automotive component processing drawing object, and θ represents the maximum value of the number of types of automotive component processing drawing objects. Among them b p,o represents the o-th CAD measurement sequence instruction data in the CAD measurement sequence instruction data set B p , and represents the maximum value of the number of CAD measurement sequence instructions in the CAD measurement sequence instruction data set B p for the dimensional and geometric dimensions of automotive component processing; the type of automotive component processing drawing object represents the type of CAD processing drawing object of automotive components with different shapes and different dimensional requirements; the CAD measurement sequence instruction data for the dimensional and geometric dimensions of automotive component processing represents the CAD dimensional tolerance or geometric tolerance measurement sequence execution instruction parameters for measuring the dimensional tolerance parameters or geometric tolerance parameters of the actual processing of automotive components set by the automotive component manufacturing enterprise according to the processing CAD drawing standards of different types of automotive components manufactured by the enterprise;

[0068] S22. Use the K-D tree nearest neighbor search algorithm to perform feature matching between the CAD drawing data A of automotive component processing and the CAD measurement sequence instruction data set B in the matrix B of the CAD measurement sequence instruction data set for the dimensional and geometric dimensions of automotive component processing, search for the CAD measurement sequence instruction data set B p corresponding to the CAD drawing data A of automotive component processing, and generate the target CAD measurement sequence instruction data set through data identification p , where b' represents the o-th target CAD measurement sequence instruction data for the dimensional and geometric dimensions of automotive component processing. o

[0069] ​The operating steps for searching and processing the text information of dimensional tolerances and geometric tolerances design requirements in the machining drawings of automotive parts based on the CAD drawing data of automotive parts machining and the dimensional and geometric text data of automotive parts machining are as follows:

[0070] S31. Establish a matrix C=(C1,…,C p ,…,C θ ) of the dimensional and geometric text data set of automotive parts machining, where C p represents the dimensional and geometric text data set of automotive parts machining corresponding to the p-th type of automotive parts machining drawing object, and among them c p,o represents the o-th dimensional and geometric text data of the dimensional and geometric text data set C p of automotive parts machining; the dimensional and geometric text data of automotive parts machining represents the specific dimensional tolerance text information or geometric tolerance text information of the machining CAD drawing standards set by automotive parts manufacturing enterprises for different types of automotive parts manufactured by the enterprise;

[0071] S32. Use the uniform cost search algorithm to perform feature matching between the CAD drawing data A of automotive parts machining and the dimensional and geometric text data set C p in the matrix C of the dimensional and geometric text data set of automotive parts machining, search for the dimensional and geometric text data set C p corresponding to the CAD drawing data A of automotive parts machining, and generate the target dimensional and geometric text data of automotive parts machining after data identification where c′ o represents the o-th target dimensional and geometric text data of automotive parts machining.

[0072] Through the cooperation of the automotive parts processing CAD drawing information acquisition unit and the automotive parts processing dimension and form tolerance CAD drawing information acquisition unit, the processing CAD drawing parameters and the processing dimension and form tolerance CAD drawing parameters of automotive parts are accurately collected online through the automotive parts manufacturing management platform, providing real data support for the subsequent intelligent and accurate measurement of the actual processing dimension tolerance and form tolerance of automotive parts; the target automotive parts processing dimension and form tolerance CAD measurement sequence instruction search unit accurately searches for the CAD execution instruction information for measuring the dimension tolerance and form tolerance in the automotive parts processing drawing based on the automotive parts processing CAD drawing parameters, combined with the intelligent search algorithm and the automotive parts processing dimension and form tolerance CAD measurement sequence instruction parameters stored in the big data, realizing the intelligent matching of the processing dimension tolerance and form tolerance CAD measurement instructions for different types of automotive parts, and realizing the autonomous and efficient measurement of the actual processing dimension tolerance and form tolerance of automotive parts; the target automotive parts processing dimension and form information search unit scientifically searches for the dimension tolerance and form tolerance design parameters in the automotive parts processing drawing based on the automotive parts processing CAD drawing parameters, combined with the intelligent search algorithm and the automotive parts processing dimension and form text parameters set by the standard, realizing the accurate search of the theoretical design dimension tolerance and form tolerance parameters for different types of parts processing, realizing the accurate output of the dimension tolerance and form tolerance information in the automotive parts processing CAD drawing as the dimension tolerance and form tolerance text information of automotive parts processing, and realizing the intelligent acquisition of the theoretical design dimension tolerance and form tolerance parameters of automotive parts processing.

[0073] Further, please refer to Figure 1 - Figure 2 , the operation steps for collecting the three-dimensional solid model data of automotive parts products and combining it with the automotive parts processing CAD drawing data to construct and process the CAD drawing data of the two-dimensional part structure of automotive parts products are as follows:

[0074] S41. Online collect the three-dimensional modeling solid model parameters of automotive parts products manufactured based on the automotive parts processing CAD drawing through a three-dimensional laser scanner, and generate the three-dimensional solid model data Q of automotive parts products;

[0075] S42. Import the 3D solid model data Q of the automotive component product into the CAD software and run it. Convert the 3D component structure of the automotive component product in the running state into a 2D component structure CAD drawing until the generated 2D component structure CAD drawing completely matches the 2D component structure CAD view in the automotive component processing CAD drawing data A. Then, for the successfully converted and matched 2D component structure CAD drawing, generate the 2D component structure CAD drawing data W of the automotive component product through data identification. The 2D component structure CAD drawing data of the automotive component product includes the basic view CAD drawing data, auxiliary view CAD drawing data, and sectional view CAD drawing data of the automotive component product.

[0076] Perform CAD drawing matching processing on the product processing dimension tolerances and geometric tolerances in the 2D component structure CAD drawing of the automotive component product based on the automotive component processing CAD drawing data, automotive component processing dimension and geometric CAD drawing data, and 2D component structure CAD drawing data of the automotive component product. Generate the 2D processing CAD drawing data of the automotive component product and perform actual processing dimension tolerance and geometric tolerance parameter measurement processing on the automotive component product with the target automotive component processing dimension and geometric CAD measurement sequence instruction data. The operation steps for generating the actual processing dimension and geometric data of the automotive component product are as follows:

[0077] S51. Import both the automotive component processing CAD drawing data A, automotive component processing dimension and geometric CAD drawing data A 尺寸 and the 2D component structure CAD drawing data W of the automotive component product into the CAD software and run it. Then, perform CAD drawing combination processing on the automotive component processing dimension and geometric CAD drawing data A 尺寸 in the running state and the 2D component structure CAD drawing data W of the automotive component product until the combined generated CAD drawing completely matches the CAD drawing features in the automotive component processing CAD drawing data A. Then, for the successfully combined and matched CAD drawing, generate the 2D processing CAD drawing data R of the automotive component product through data identification;

[0078] S52. Based on the target automotive component processing dimension and geometric CAD measurement sequence instruction data b' in the target automotive component processing dimension and geometric CAD measurement sequence instruction data set B' o in the CAD software, perform the actual processing dimension tolerance or geometric tolerance parameter measurement operation on the 2D processing CAD drawing data R of the automotive component product in order according to the target automotive component processing dimension and geometric CAD measurement sequence instruction number, and construct the actual processing dimension tolerance or geometric tolerance parameters of the measured automotive component product into the actual processing dimension and geometric data set of the automotive component product where eo Indicates the CAD measurement sequence instruction data b' for the machining dimensions and geometric tolerances of the o-th target automotive component o Corresponding actual machining dimensions and geometric tolerances data of the automotive component product.

[0079] Through the mutual cooperation of the three-dimensional solid model acquisition unit of the automotive component product and the two-dimensional component structure CAD drawing information generation unit of the automotive component product, the three-dimensional laser scanner is used to efficiently acquire the parameters of the three-dimensional solid model of the automotive component product. Combining with the CAD software and the parameters of the CAD drawing for automotive component machining, the two-dimensional component structure CAD drawing of the automotive component product is autonomously and dynamically and accurately constructed, realizing the numerical establishment of the parameters of the two-dimensional component structure CAD drawing of the automotive component product; the two-dimensional machining CAD drawing information generation unit of the automotive component product scientifically constructs the parameters of the two-dimensional machining CAD drawing of the automotive component product according to the machining CAD drawing parameters, machining dimension and geometric tolerance CAD drawing parameters of the automotive component, and the parameters of the two-dimensional component structure CAD drawing of the automotive component product, realizing the numerical and autonomous accurate establishment of the parameters of the two-dimensional machining CAD drawing of the automotive component product; the actual machining dimension and geometric tolerance information measurement unit of the automotive component product accurately measures the actual machining dimensional tolerance and geometric tolerance parameters of the automotive component product according to the parameters of the two-dimensional machining CAD drawing of the automotive component product, combined with the CAD software and the target automotive component machining dimension and geometric tolerance CAD measurement sequence instruction parameters, realizing the intelligent measurement of the actual machining dimensional tolerance and geometric tolerance parameters of the automotive component product, and improving the efficiency and accuracy of automotive component manufacturing quality inspection.

[0080] Furthermore, please refer to Figure 1 - Figure 2 According to the actual machining dimensions and geometric tolerances data of the automotive component product and the target automotive component machining dimensions and geometric tolerances text data, the operation steps for processing the machining quality of the actual dimensional tolerance and geometric tolerance of the automotive component product to generate the actual machining dimensions and geometric tolerances quality analysis data of the automotive component product are as follows:

[0081] S61. Obtain the target automotive component machining dimensions and geometric tolerances text data C' and the set E of actual machining dimensions and geometric tolerances data of the automotive component product;

[0082] S62. For the actual machining dimensions and geometric tolerances data e of the automotive component product in the set E of actual machining dimensions and geometric tolerances data of the automotive component product o According to the target automotive component machining dimensions and geometric tolerances CAD measurement sequence instruction number and the target automotive component machining dimensions and geometric tolerances text data c' in the target automotive component machining dimensions and geometric tolerances text data C' oPerform comparison on the numerical ranges of dimensional tolerances or geometric tolerances, and generate a set of actual machining dimension and geometric quality analysis data for automotive component products based on the comparison results of dimensional tolerances or geometric tolerances where f o represents the actual machining dimension and geometric data e o of the automotive component product, corresponding to the actual machining dimension and geometric quality analysis data of the automotive component product;

[0083] When e o ∈c′ o , it indicates that the actual machining dimensional tolerance or geometric tolerance of the automotive component product meets the requirements of the theoretical design dimensional tolerance or geometric tolerance standard for automotive component machining, and then output the actual machining dimension and geometric quality analysis data f o of the automotive component product as qualified;

[0084] When it indicates that the actual machining dimensional tolerance or geometric tolerance of the automotive component product does not meet the requirements of the theoretical design dimensional tolerance or geometric tolerance standard for automotive component machining, and then output the actual machining dimension and geometric quality analysis data f o of the automotive component product as unqualified.

[0085] The operation steps for constructing the quality inspection data of automotive component manufacturing and performing the quality inspection result display operation of automotive component manufacturing are as follows:

[0086] S71. Combine the target automotive component machining dimension and geometric text data C', the set E of actual machining dimension and geometric data of the automotive component product, and the set F of actual machining dimension and geometric quality analysis data of the automotive component product to construct the quality inspection data K of automotive component manufacturing, where K = (C', E, F);

[0087] S72. Transmit the generated quality inspection data K of automotive component manufacturing to the automotive component manufacturing management platform through the Internet of Things communication network, and cooperate with the display screen to perform the quality inspection result display operation of automotive component manufacturing.

[0088] Through the actual processing geometric quality analysis unit of automotive parts products, based on the actual processing dimensional geometric parameters of automotive parts products, the target automotive parts processing dimensional geometric text information and numerical analysis, scientifically classify and analyze the actual dimensional tolerance and geometric tolerance processing quality of automotive parts products, and achieve accurate and reliable analysis of the manufacturing quality of dimensional tolerance and geometric tolerance of automotive parts; the automotive parts manufacturing quality inspection information construction unit and the automotive parts manufacturing quality inspection information display unit cooperate with each other, and scientifically construct the automotive parts manufacturing quality inspection information based on the actual processing dimensional geometric parameters of automotive parts products, the target automotive parts processing dimensional geometric text information and the actual processing dimensional geometric quality analysis results of automotive parts products, so as to accurately collect the dimensional tolerance geometric tolerance of the theoretical design and actual processing of automotive parts and the actual processing dimensional geometric quality information of automotive parts products, and at the same time, combined with the automotive parts manufacturing management platform and the display screen, independently visualize and display the output of the automotive parts manufacturing quality inspection results, improving the feedback efficiency and intuitiveness of the automotive parts manufacturing inspection results.

[0089] Embodiment 2:

[0090] Please refer to Figure 1 - Figure 2 , a data-based automotive parts manufacturing analysis system for implementing a data-based automotive parts manufacturing analysis method. 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;

[0091] The automotive parts design data processing module includes an automotive parts processing CAD drawing information collection unit, an automotive parts processing dimensional geometric CAD drawing information collection unit, an automotive parts processing dimensional geometric CAD measurement sequence instruction storage unit, a target automotive parts processing dimensional geometric CAD measurement sequence instruction search unit, an automotive parts processing dimensional geometric information storage unit, and a target automotive parts processing dimensional geometric information search unit;

[0092] The CAD drawing information collection unit for automotive component processing collects CAD drawing data of automotive component processing through the automotive component manufacturing management platform; the CAD drawing information collection unit for the dimensional and geometric tolerances of automotive component processing collects CAD drawing data of the dimensional and geometric tolerances of automotive component processing through the automotive component manufacturing management platform; the storage unit for the CAD measurement sequence instructions of the dimensional and geometric tolerances of automotive component processing is used to store the data of the CAD measurement sequence instructions of the dimensional and geometric tolerances of automotive component processing; the target CAD measurement sequence instruction search unit for the dimensional and geometric tolerances of automotive component processing performs search processing on the CAD execution instruction information for measuring dimensional tolerances and geometric tolerances in the automotive component processing drawing based on the CAD drawing data of automotive component processing and the data of the CAD measurement sequence instructions of the dimensional and geometric tolerances of automotive component processing, and generates the target CAD measurement sequence instruction data for the dimensional and geometric tolerances of automotive component processing; the storage unit for the dimensional and geometric information of automotive component processing is used to store the text data of the dimensional and geometric tolerances of automotive component processing; the target search unit for the dimensional and geometric information of automotive component processing performs search processing on the text information of the design requirements for dimensional tolerances and geometric tolerances in the automotive component processing drawing based on the CAD drawing data of automotive component processing and the text data of the dimensional and geometric tolerances of automotive component processing, and generates the target text data of the dimensional and geometric tolerances of automotive component processing.

[0093] The automotive component processing data processing module includes an automotive component product three-dimensional solid model collection unit, an automotive component product two-dimensional component structure CAD drawing information generation unit, an automotive component product two-dimensional processing CAD drawing information generation unit, and an automotive component product actual processing dimensional and geometric information measurement unit.

[0094] The three-dimensional solid model acquisition unit of automotive component products collects the three-dimensional solid model data of automotive component products through a three-dimensional laser scanner; the two-dimensional component structure CAD drawing information generation unit of automotive component products constructs and processes the CAD drawing data of the two-dimensional component structure of automotive component products based on the three-dimensional solid model data of automotive component products combined with the CAD drawing data of automotive component processing, and generates the CAD drawing data of the two-dimensional component structure of automotive component products; the two-dimensional processing CAD drawing information generation unit of automotive component products performs CAD drawing matching processing of product processing dimensional tolerances and geometric tolerances in the two-dimensional component structure CAD drawing of automotive component products according to the CAD drawing data of automotive component processing, the CAD drawing data of automotive component processing dimensional and geometric tolerances, and the CAD drawing data of the two-dimensional component structure of automotive component products, and generates the CAD drawing data of the two-dimensional processing CAD drawing of automotive component products; the actual processing dimensional and geometric information measurement unit of automotive component products measures the actual processing dimensional tolerances and geometric tolerance parameters of automotive component products according to the CAD drawing data of the two-dimensional processing CAD drawing of automotive component products and the target automotive component processing dimensional and geometric CAD measurement sequence instruction data, and generates the actual processing dimensional and geometric data of automotive component products;

[0095] The automotive component manufacturing quality analysis module includes the actual processing geometric quality analysis unit of automotive component products, the automotive component manufacturing quality inspection information construction unit, and the automotive component manufacturing quality inspection information display unit;

[0096] The actual processing geometric quality analysis unit of automotive component products performs processing quality analysis of the actual dimensional tolerances and geometric tolerances of automotive component products according to the actual processing dimensional and geometric data of automotive component products and the target automotive component processing dimensional and geometric text data, and generates the actual processing dimensional and geometric quality analysis data of automotive component products; the automotive component manufacturing quality inspection information construction unit is used to construct the automotive component manufacturing quality inspection data; the automotive component manufacturing quality inspection information display unit performs the automotive component manufacturing quality inspection result display operation according to the automotive component manufacturing quality inspection data combined with the automotive component manufacturing management platform and the display screen.

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

Claims

1. A data-based analysis method for automotive component manufacturing, characterized in that, The method includes the following steps: S1. Collect the CAD drawing data of automotive component processing and the geometric dimension CAD drawing data of automotive component processing; S2. Search and process the CAD execution instruction information for measuring dimensional tolerances and geometric tolerances in the automotive component processing drawing according to the CAD drawing data of automotive component processing and the geometric dimension CAD measurement sequence instruction data of automotive component processing, and generate the target geometric dimension CAD measurement sequence instruction data of automotive component processing; S3. Search and process the text information of the design requirements for dimensional tolerances and geometric tolerances in the automotive component processing drawing based on the CAD drawing data of automotive component processing and the geometric dimension text data of automotive component processing, and generate the target geometric dimension text data of automotive component processing; S4. Collect the three-dimensional solid model data of the automotive component product and perform CAD drawing data construction processing on the two-dimensional component structure of the automotive component product in combination with the CAD drawing data of the automotive component processing to generate the CAD drawing data of the two-dimensional component structure of the automotive component product; S5. Perform CAD drawing matching processing on the product processing dimensional tolerances and geometric tolerances in the CAD drawing of the two-dimensional component structure of the automotive component product according to the CAD drawing data of the automotive component processing, the geometric dimension CAD drawing data of the automotive component processing, and the CAD drawing data of the two-dimensional component structure of the automotive component product, generate the CAD drawing data of the two-dimensional processing of the automotive component product, and perform measurement processing on the actual processing dimensional tolerances and geometric tolerance parameters of the automotive component product with the target geometric dimension CAD measurement sequence instruction data to generate the actual processing geometric dimension data of the automotive component product; S6. Perform processing on the processing quality analysis of the actual dimensional tolerances and geometric tolerances of the automotive component product according to the actual processing geometric dimension data of the automotive component product and the target geometric dimension text data of the automotive component processing to generate the actual processing geometric dimension quality analysis data of the automotive component product; S7. Construct the quality inspection data of automotive component manufacturing and execute the operation of displaying the quality inspection results of automotive component manufacturing.

2. The analysis method for manufacturing automotive parts based on data according to claim 1, characterized in that: The S1 includes the following steps: S11. The user inputs the theoretical design mechanical CAD drawing information of automotive component processing online through the data input end of the automotive component manufacturing management platform and generates the CAD drawing data A of automotive component processing; The user inputs the mechanical CAD drawing information of the dimensions, dimensional tolerances, and geometric tolerances marked in the theoretical design of automotive component processing through the data input end of the automotive component manufacturing management platform, and generates the automotive component processing dimension and geometric CAD drawing data A 尺寸 .

3. The method for analyzing the manufacturing of automotive parts based on data according to claim 2, wherein: The S2 includes the following steps: S21. Establish a matrix B=(B1,..., B p ,..., B θ ), where p = 1, 2, 3,..., θ; among them, B p represents the set of automotive component machining dimension and geometric CAD measurement sequence instruction data corresponding to the p-th type of automotive component machining drawing object, and θ represents the maximum value of the number of automotive component machining drawing object types. Among them, b p,o represents the o-th automotive component machining dimension and geometric CAD measurement sequence instruction data in the set of automotive component machining dimension and geometric CAD measurement sequence instruction data B p , and represents the maximum value of the number of automotive component machining dimension and geometric CAD measurement sequence instructions in the set of automotive component machining dimension and geometric CAD measurement sequence instruction data B p . S22. Use the K-D tree nearest neighbor search algorithm to match the features of the CAD drawings of the automotive parts between the said A and the said B, and search for the said B corresponding to the said A p Perform feature matching of the CAD drawings of automotive parts processing, and search for the said B corresponding to the said A p And generate a target automotive parts processing dimension and position CAD measurement sequence instruction data set through data identification where b' o represents the o-th target automotive parts processing dimension and position CAD measurement sequence instruction data.

4. The method for analyzing the manufacturing of automotive parts based on data according to claim 3, characterized in that: The S3 includes the following steps: S31. Establish a matrix C=(C1,…,C p ,…,C θ ) of automotive component machining dimension and geometric text data sets, where C p represents the automotive component machining dimension and geometric text data set corresponding to the p-th type of automotive component machining drawing object, where c p,o represents the o-th automotive component machining dimension and geometric text data in the automotive component machining dimension and geometric text data set C p ; S32. Use the uniform cost search algorithm to match the C in the A and the C, p perform feature matching on the CAD drawings of automotive parts processing, and search for the C corresponding to the A p , and generate target automotive parts processing dimension and form text data through data identification where c′ o represents the o-th target automotive parts processing dimension and form text data.

5. The analysis method for manufacturing automotive parts based on data according to claim 4, wherein: The S4 includes the following steps: S41. Online collect the three-dimensional modeling solid model parameters of the automotive component product manufactured based on the CAD drawing of automotive component processing through a three-dimensional laser scanner and generate the three-dimensional solid model data Q of the automotive component product; S42. Import the Q into the CAD software for running, and convert the three-dimensional component structure of the automotive component product in the running state into a two-dimensional component structure CAD drawing until the generated two-dimensional component structure CAD drawing completely matches the two-dimensional component structure CAD view in the A, and for the successfully converted and matched two-dimensional component structure CAD drawing, generate the automotive component product two-dimensional component structure CAD drawing data W through data identification.

6. The method for analyzing the manufacturing of automotive parts based on data according to claim 5, characterized in that: The S5 includes the following steps: S51. Import the A and the W into CAD software for operation, and perform CAD drawing combination processing on the A in the running state and the W until the CAD drawing generated by the combination completely matches the CAD drawing features in the A, and generate two-dimensional processing CAD drawing data R of automotive parts products by data identification for the successfully combined and matched CAD drawing; 尺寸 and import both the A and the W into CAD software for operation, and perform CAD drawing combination processing on the A in the running state and the W until the CAD drawing generated by the combination completely matches the CAD drawing features in the A, and generate two-dimensional processing CAD drawing data R of automotive parts products by data identification for the successfully combined and matched CAD drawing; 尺寸 and import both the A and the W into CAD software for operation, and perform CAD drawing combination processing on the A in the running state and the W until the CAD drawing generated by the combination completely matches the CAD drawing features in the A, and generate two-dimensional processing CAD drawing data R of automotive parts products by data identification for the successfully combined and matched CAD drawing; S52. The CAD software is based on b' described in B'. o Execute the measurement operation of the actual machining dimension tolerance or geometric tolerance parameters of the automotive part products on R in order according to the instruction number of the CAD measurement sequence of the machining dimension and geometric form of the target automotive part, and construct the actual machining dimension and geometric data set of the automotive part products from the measured actual machining dimension tolerance or geometric tolerance parameters of the automotive part products Where e o Represents the actual machining dimension and geometric data of the automotive part product corresponding to the o-th b'. o ​ 7. The method for analyzing the manufacturing of automotive parts based on data according to claim 6, characterized in that: The S6 includes the following steps: S61. Obtain the C' and the E; S62. Put the e in the E o In accordance with the instruction number of the CAD measurement sequence of the geometric dimension and tolerance of the target automotive part processing size, and the c' in the C' o Perform the comparison of the numerical range of dimensional tolerance or geometric tolerance, and generate the actual processing dimensional and geometric quality analysis data set of automotive part products according to the comparison result of dimensional tolerance or geometric tolerance numerical values where f o represents the actual processing dimensional and geometric quality analysis data of the corresponding automotive part product of the e o ; When e o ∈ c' o then output the geometric quality analysis data f of the actual machining dimensions of the automotive parts products o is qualified; When output the actual machining size and geometric quality analysis data f of automotive parts products o is unqualified.

8. The method for analyzing the manufacturing of automotive parts based on data according to claim 7, characterized in that: The S7 includes the following steps: S71. Combine the data of the C', the E, and the F to construct the automotive component manufacturing quality inspection data K; S72. Transmit the generated K to the automotive component manufacturing management platform through the Internet of Things communication network, and cooperate with the display screen to perform the automotive component manufacturing quality inspection result display operation.

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

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