Lightweight processing method and apparatus for product model

Abstract

The invention discloses a lightweight processing method for a product model. The method comprises the steps of analyzing the product model and acquiring a characteristic set of the product model; according to a preset lightweight policy, determining deletable characteristics in the characteristic set; and deleting the deletable characteristics, reserving a geometric structure characteristic and a size characteristic of the product model, and generating a lightweight product model with the same shape structure as the product model. According to the lightweight processing method and apparatus for the product model, the characteristic removal processing can be performed, only a final boundary model structure is reserved, and the assembly level fusion processing can be performed, so that the model storage space can be greatly saved and the model processing speed can be greatly increased; and the lightweight processing of parts is automatically finished, so that the model can be assembled in a lightweight form, the complicated characteristics and the characteristic regeneration problem are avoided, and the working efficiency of designers is improved.

Description

technical field [0001] The invention relates to the technical field of product digital models, in particular to a method and device for lightweight processing of product models. Background technique [0002] With the deepening of the application of 3D CAD technology in product design, the ability of CAD system to process complex 3D models is getting stronger and stronger, but it also brings a problem, namely: the speed of processing large and complex CAD assembly models. Complex products are often composed of tens of thousands of parts. To build a complete assembly model of the product in the computer, the amount of model data that needs to be processed is very large, and the processing takes a very long time. According to the existing computer processing power, for complex products, it often takes ten minutes or even tens of minutes to open a complete machine assembly model. This greatly reduces the work efficiency of complex product machine assembly model construction and...

AI Technical Summary

Problems solved by technology

[0004] However, none of the above three methods are suitable for the simplified requirements of the product assembly model:

[0005] 1. The accuracy of the model cannot meet the demand

The above lightweight technologies all replace the original model with an approximate model, which cannot meet the expression requirements of the mold model in terms of model expression accuracy.

[0006] Second, the angle of hierarchical control is different

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