A Method of Reversing Hard Point Model of Chassis

Abstract

A method for inversely calculating the hard point model of the chassis, which relates to the field of automobile technology, and the modeling process is as follows: S1 acquisition of benchmark data for chassis system matching; S2 inverse calculation of characteristic data of each individual component of the chassis; S3 assembly of the chassis system; S4 chassis system Assembly deviation analysis: If the deviation analysis value exceeds the threshold, return to S2 according to the cause of the error; if the deviation analysis value is less than the threshold, jump to S5; S5 establishes the hard point model of the chassis system; S6 compiles the hard point report of the chassis system, and carries out CAE analysis check. After the chassis parts are scanned, the present invention does not carry out three-dimensional modeling of the parts, but directly uses the point cloud data of the chassis parts to reversely obtain the hard points of the installation features of the parts, which saves a lot of time required for the three-dimensional modeling of the parts Time and human resources have shortened the cycle of chassis hard point model establishment, greatly improved efficiency, ensured the time node for new products to be launched or provided quick feedback for after-sales quality problem solving.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for inversely obtaining a hard point model of a chassis. Background technique [0002] In the field of automobile technology, chassis suspension motion performance is one of the key points of chassis technology research, especially for the occurrence of deviation from performance goals such as deviation, it is necessary to analyze the actual vehicle state. In order to quickly solve the problem and explore its root cause, in addition to the bench test in the laboratory, it is necessary to combine CAE for virtual analysis. To analyze the suspension performance of the chassis, it is first necessary to obtain the hard points of the chassis (assembly hard points or hard points under force, etc.), and establish the overall hard point model of the chassis, such as figure 1 shown. [0003] How to obtain the hard point of the chassis of the real car is a difficult point. A...

AI Technical Summary

Problems solved by technology

In this scheme, on the one hand, it takes a lot of manpower and time to reconstruct the data of the chassis system; on the other hand, the chassis system matched according to the four-wheel alignment parameters is a theoretical state, which cannot accurately reflect the state of the real vehicle, nor can it be used in the actual state. The data measured in the pre-vehicle test are mutually verified, and the real cause of the problem cannot be found out.

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