摘要
生成型特征的形状是由二维参数化勾画轮廓扫描而成；浮动基准体系用来引导特征的设计，特征与特征以及特征与产品模型之间的依赖关系都可以通过浮动基准体系来建立；基准所依赖的对象被删除时，通过将此基准拷贝成虚基准，使此基准以及依附于它的特征仍然可以保留并悬浮在模型里．这样就可以对特征进行局部修改．
This paper presents a generative feature based design methodology that supports modifying feature based model in a localized way.Feature′s shape is swept by sketched profile.A floating datum system is built up to guide the feature definition.A feature can be attached to other feature or product model through this floating datum system.Object entities to which the datum is attached can be deleted,but the datum and the related features are still existing,and temporarily floating in the work space.Thus features can be freely modified,cut out and relocated,or deleted in a localized way.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
1998年第3期233-240,共8页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金
航空基金
关键词
生成型特征
勾画轮廓
浮动基准体系
CAD
generative feature based design, sketched profile, floating datum system
