关键词: 工程图学, 三维CAD, 立体构型, 二维识图, 特征轮廓

Abstract: The modeling process of most solid structures in engineering graphics course can
be seen as the results of feature profiles’ movements, usually stretching, cutting or rotating.
Combining teaching practice of engineering graphics and 3D CAD course, a solid modeling
method based on feature profiles is summarized. The feature profile that shows the shape of a
solid is extracted from 2D views, then through stretching, cutting, rotating or the unite of them, a
3D solid is modeled. Some ramificate solid modeling methods are proposed, such as single feature
profile, single direction multi-feature profile, bidirectional feature profiles, bidirectional
multi-feature profiles, etc. Solid modeling process can be greatly simplified with feature profile
method, especially bidirectional feature profiles method.

Key words: graphics, 3D CAD, solid modeling, 2D drawing reading, feature
profile