Frame assembly dimensional tolerance design method, electronic equipment and storage medium

By optimizing the key dimensions of the chassis assembly through DFMEA analysis and 3DCS software, the problem of unreasonable tolerance design of the chassis assembly was solved, and the chassis accuracy and overall vehicle performance were improved.

CN121997464APending Publication Date: 2026-05-08FAW JIEFANG AUTOMOTIVE CO
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Patent Information

Application Number
CN202610253619.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-03
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

The existing chassis assembly tolerance design is redundant and unreasonable, which leads to assembly difficulties, reduced vehicle performance, and inability to effectively support high-precision manufacturing and meet vehicle performance standards.

Method used

Through DFMEA complex problem analysis, the key dimensions of the frame assembly are identified and classified. Combined with the actual manufacturing process, the dimensional chain design is optimized. The 3DCS dimensional engineering software is used for verification to optimize the accuracy of the key dimensions of the frame assembly.

Benefits of technology

The improved dimensional accuracy of the chassis assembly enhances the overall structural performance and quality of the vehicle, ensuring assembly consistency and driving stability.

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Abstract

The invention belongs to the technical field of commercial vehicle chassis design, and discloses a vehicle frame assembly dimensional tolerance design method, electronic equipment and a storage medium, and the method comprises the steps: S1, size problem identification: decoupling the size problem affecting the whole vehicle installation and quality problem, determining the whole vehicle key size related to the quality problem, and carrying out the recognition of the size problem; identifying the key size of the frame assembly from the listed key sizes of the whole vehicle; s2, design optimization of the size precision of the frame assembly: identifying the current situation of the key size precision of the frame assembly, setting a key size precision target of the frame assembly, and analyzing and optimizing the key size of the frame assembly to achieve the precision target; and S3, completing improvement and summarization. The invention designs a method for designing the dimensional tolerance of a frame assembly, which is used for solving the problems of assembly, performance and reliability caused by unreasonable traditional tolerance design, and improves the dimensional accuracy of a frame and the structural performance and quality of a whole vehicle by optimizing the design of a frame dimensional chain.
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