Fitting method for motion envelope 3D data of vehicle power assembly

Abstract

The invention provides a fitting method for motion envelope 3D data of a vehicle power assembly, and the method comprises the steps: generating a three-dimensional coordinate motion part, building a first power assembly free state coordinate system and a preset number of working condition coordinate systems in the three-dimensional coordinate motion part, and adding a rotation command for each working condition coordinate system; the generation interface component comprises motion parameters for the preset number of working condition coordinate systems; generating a first assembly component, generating a first three-dimensional coordinate part in the first assembly component, and establishing a whole vehicle coordinate system, a first power assembly centroid coordinate system and a second power assembly free state coordinate system in the first three-dimensional coordinate part; the three-dimensional coordinate moving part is assembled into the first assembling assembly; and generating a preset number of second assembly components in the first assembly component, creating a second three-dimensional coordinate component in each second assembly component, loading 3D data of the power assembly in the whole vehicle, and establishing a second power assembly centroid coordinate system in the second three-dimensional coordinate component.

Description

technical field [0001] The invention relates to the simulation of 3D data of vehicle powertrain motion envelope, in particular to a fitting method and device for vehicle powertrain motion envelope 3D data. Background technique [0002] In the stage of vehicle cabin layout design, the movement of the powertrain is an important basis for checking the movement gap between the components of the cabin. Since the layout design work needs to be carried out in a 3D software environment, the fitting of the 3D data of the powertrain motion envelope It is a very important work that can provide intuitive and visual design references for general layout engineers and product design engineers. [0003] The fitting of the 3D data of the powertrain motion envelope usually refers to placing multiple powertrain 3D data into the corresponding motion according to the displacement and rotation angle of the powertrain under each working condition through relevant 3D design software (such as CATIA)...

AI Technical Summary

Problems solved by technology

[0008] 1. The displacement and rotation angle of each working condition of the powertrain needs to be input repeatedly manually, which requires heavy workload and troublesome operation

[0009] 2. When the motion parameters of the powertrain change or the 3D data of the powertrain changes, all operations need to be performed again, which is not repeatable

3. The generated data has large errors, and the DMU module of CATIA software needs to be used, and the software operation level is relatively high.

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