A Complex Product Model Construction Method Based on Surface Features

Abstract

The invention discloses a complicated product model construction method based on a surface feature, and the method comprises the following steps: firstly, carrying out instantiation on the surface feature by setting characteristic parameter values; secondly, locating the surface feature of the instantiation at a surface model; then automatically generating a transition surface feature so that the surface feature is smoothly combined with an attachment surface; and finally establishing a surface feature model by putting up building blocks till the construction of a product model is finished. According to the method, the surface feature is effectively used as a design unit, like a regular feature model system, so that the surface feature with specific function semantics is conveniently used for establishing the feature model. The method is applied in CAD (Computer-Aided Design) model construction so that a product can have smooth appearance and stronger function; and therefore, the requirement of the user is better satisfied, the product competitiveness is efficiently promoted, and the design efficiency is improved.

Description

technical field [0001] The invention relates to a complex product model building method based on surface features, in particular to surface feature modeling, transition features and surface feature parameterization methods in feature modeling technology, and belongs to the field of computer-aided design. Background technique [0002] Feature modeling technology is relatively mature and widely used, but surface feature modeling technology is still in its infancy, and there are still many problems to be solved. Similar to conventional feature models, with features as design units, the establishment and modification methods of surface feature models are straightforward. However, due to the complexity of the surface feature itself, the instantiation of the surface feature, the positioning of the surface feature and the transition between the surface feature and the attached surface are all problems in feature modeling. [0003] Surface feature technology has attracted people's ...

AI Technical Summary

Problems solved by technology

In the past ten years, some surface feature instantiation and positioning methods have emerged, but these methods are too complex for some specific surface features or the positioning process lacks generality; implemented in such a way that after the surface feature is repositioned, the transition surface cannot be automatically regenerated

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