实体模型中浮动模块及其变换与特殊视图提取

针对AutoCAD系统存在的从实体模型不能直接提取符合我国国家标准规定的旋转视图和多个剖切面构成的特殊剖视图等问题，提出了利用浮动模块构建实体模型的虚拟结构，并通过该模块变换实体模型的结构形状与各部分的相对位置，从而在系统提供的命令条件下顺利提取到实体模型的这些视图。文中还给出了详细的例证。

The Floating Model Block and Its Transformation and Special View Extraction in Solid Model

With an aim at the problems that the rotary views in concert with the Chinese National Standard and the special profile views conformed by multiprofile orthographs which can not directly extracted from the solid models existing in Auto CAD system,this paper suggests that the floating model blocks be used to configurate the virtual structure of the solid model,the structural shapes and relative position of each part in solid model via the model transformation are studies whereby these views of the solid model are smoothly obtained in the case of the instructions given by the system. Also,this paper cites the detailed examples.