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A machining quality control method for automobile parts

A technology of processing quality and control method, applied in the field of parts processing, can solve the problems of long process route, difficult detection, and many processing features, and achieve the effect of optimizing the detection system, improving the qualification rate and saving production costs.

Inactive Publication Date: 2019-02-22
HEFEI CHANGQING MACHINERY
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AI Technical Summary

Problems solved by technology

The traditional quality control process faces great difficulties. 1) Auto parts have complex shapes, many processing features, and long process routes, making it difficult to carry out inspections at every step; Identify key factors affecting quality

Method used

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Embodiment Construction

[0016] A processing quality control method for auto parts, characterized in that it comprises the following steps:

[0017] 1) Input the engineering information of the part according to the geometric characteristics of the part and the processing technology, and combine the requirements of user needs, product performance and service life to determine the quality characteristics of the product and compile the part quality characteristic set S i (i=1, 2, 3,...n) and the factor set S that affects the quality characteristics of the part j (j=1, 2, 3, ... n);

[0018] 2) Establish part quality feature set S i with factor set S j Adjacency matrix A, when element a in A ij = 1, the factor S j and part quality characteristics S i related; when element a in A ij =0, the factor S j and part quality characteristics S i irrelevant;

[0019] 3) Add the adjacency matrix A to the identity matrix I to get A 1 =(A+I), let A k =A k-1 2 (K=1, 2, 3,...n), according to the Boolean alg...

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Abstract

The invention discloses a machining quality control method for automobile parts, which comprises the following steps: inputting engineering information for parts based on part geometric features and machining process, combining with the requirements of users, determining the quality characteristics of the products; establishing the adjacency matrix A between Si and Sj; Adjacency matrix A plus identity matrix I gives A1= (A + I) such that Ak=Ak-12 (K=1, 2, 3, ...n), according to Boolean algebra, we can get the matrix K=Ak-1=(A+I); In the matrix K, the nj column corresponding to the ni-th row with the value of 1 is used to establish the set Mj, from which the Sj is found to be added and sorted, and the factors affecting the quality characteristics of the part in the first layer are found tobe the maximum of the Sj addition value, and so on. According to the factors of the first layer, the second layer, the third layer, and the n layer affecting the quality characteristics of the parts,the key factors are found out for grading control, so that the qualified rate of the parts can be improved and the production cost of the automobile can be saved.

Description

technical field [0001] The invention belongs to the technical field of parts processing methods, and in particular relates to a processing quality control method for automobile parts. Background technique [0002] Automobile is the main industry and pillar of China's manufacturing industry, and the proportion of auto parts industry in the automobile industry is about 35% to 36%. At present, the international competition in the automobile manufacturing industry is becoming increasingly fierce, and the quality of products has become the core competitiveness of enterprises to meet the challenge. Automobile manufacturing and its parts supply enterprises are all committed to improving their own competitiveness. Manufacturing defects of 1% of the size of the parts may have a bad impact on the end users of the product, and even reduce the market competitiveness of automobile manufacturers. Therefore, the quality control of automobiles and their parts has become an important part o...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/04G06F17/16
CPCG06F17/16G06Q10/0639G06Q50/04Y02P90/30
Inventor 吴应举
Owner HEFEI CHANGQING MACHINERY
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