Macpherson suspension four-wheel parameter verification method based on CATIA parametric module

Abstract

The invention relates to the field of automobile computer aided design, in particular to a Macpherson suspension four-wheel parameter verification method based on a CATIA parametric module. Accordingto the method, a Macpherson suspension part architecture model is set up based on a CATIA platform, and parameter variables and relation variables are set; the parameter variables are modified according to actual conditions, and states needing to be stimulated are obtained through matching; and after setting of the parameter variables of each different state is completed, a system can simulate a four-wheel parameter result corresponding to the state timely through a relation formula, namely the relation variables, and a specific difference value between the result and a preset four-wheel parameter value is displayed. The method can adapt to different models just by modifying parameters according to the actual conditions; variable parameter settings cover all key factors influencing Macpherson structure suspension four-wheel parameters, so that the method has high universality; and the method can guide a design department, a production department or a supplier to correct some dimensionsto meet the preset four-wheel parameter value.

Description

technical field [0001] The invention relates to the field of automobile computer aided design, in particular to a method for checking the parameters of the four-wheel McPherson suspension based on the CATIA parameterization module. Background technique [0002] CATIA has become the computer-aided design system used by top automobile manufacturers in Europe, North America and Asia. CATIA has unique strengths in styling, body and engine design, and provides end-to-end (end-to-end) for the design and manufacture of various vehicles. to end), CATIA involves three key areas of product, process and people. CATIA can not only model all products, but also model in the context of real behavior, and design in the experience era; relying on the CATIA platform, no The function can be realized by newly developing basic software, saving software development costs, accurate calculation results, time-saving and labor-saving, and the calculation accuracy can theoretically reach one thousandt...

AI Technical Summary

Problems solved by technology

Chinese patent ZL201010134151.8 discloses a design method of MacPherson suspension, which calculates the height of the roll center through parameters such as the hard point of the MacPherson suspension and the radius of the tire, so that it can be conveniently used in the design process Adjust the height of the roll center. This method is to calculate the height of the roll center through formula calculation or directly modify the digital-analog measurement. For a specific model or a specific working condition, the required value can be obtained quickly. Changes require remodeling, and the workload is huge. This method cannot fully simulate all influencing variables, the results are inaccurate and extremely error-prone, and there is no universality. At the same time, it is impossible to measure the four-wheel parameters.

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