Method for tolerance design qualitative simulation of sedan body

A technology for car body and tolerance, which is applied in the field of qualitative simulation of tolerance design of car body, and can solve problems such as incapability of qualitative simulation.

Inactive Publication Date: 2006-03-22
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

This method is positioned in the detailed process design stage, and this method cannot perform qualitative simulation on various tolerances of the car body during the conceptual design of the car body

Method used

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  • Method for tolerance design qualitative simulation of sedan body
  • Method for tolerance design qualitative simulation of sedan body
  • Method for tolerance design qualitative simulation of sedan body

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specific Embodiment

[0030] According to content of the present invention provide specific embodiment: a kind of method for the tolerance design qualitative simulation of S6460 type concept car is as follows:

[0031] a. If figure 1 As shown, first generate the assembly sequence set, as shown in Figure 5 As shown, the assembly parts are first imported from the model database, each part is numbered with numbers 1, 2, 3..., and the correlation matrix and priority relationship matrix are extracted by human-computer interaction, and the sub-assembly is judged in the form of series and parallel through the contraction matrix After that, all feasible assembly sequences are generated. For the specific steps of the feasible assembly sequence generation process, see figure 2 , extract the qualitative information of the assembly from the attribute database, and generate the assembly process index matrix by using the qualitative information to reduce the assembly sequence as Figure 4 shown.

[0032] b....

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Abstract

The present invention belongs to the field of computerized simulation technology. The tolerance design and qualitative simulation process for sedan body includes the following steps: A. utilizing the association matrix and prior association matrix and contracting matrix to judge sub-assembly in serial form, to create all the feasible assembling orders, and reducing the assembling orders with the qualitative information to create assembling process index matrix to create the feasible assembling order set; B. configuring initial assembly jointing scheme and the assembling scheme jointing process restriction to generate assembling scheme joint set; and C. determining the size composition rings of key size chain, performing initial scheme setting of the tolerance of key size composition ring to be optimized and trimming the tolerance limit of the composition ring to create the optimized tolerance configuring scheme of the assembly and qualitative analysis and calculation of the assembling deviation of the assembled size.

Description

technical field [0001] The invention relates to a method in the technical field of computer simulation, in particular to a method for qualitatively simulating the tolerance design of a car body. Background technique [0002] The manufacture of the car body is welded by hundreds of stamped thin-plate structural parts of different shapes and sizes. When designing, the designer adjusts the tolerance of the whole vehicle and each thin-plate structural part according to the size of the parts and the difficulty of welding construction. Allocation, if the tolerance allocation is reasonable, the size of the three-dimensional point of the appearance of the car body after assembly and welding is easier to meet the design requirements, but the designer cannot achieve success once, and usually needs to go through multiple revisions. If the designer uses a computer to perform qualitative simulation on the tolerance allocation of the vehicle and each thin-plate structural part, it can fur...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 来新民金隼李余兵林忠钦陈关龙邢彦锋周江奇曹俊
Owner SHANGHAI JIAO TONG UNIV
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