二维图形的特征分析与特征建模

Feature Analysis and Feature Modeling of Two-dimension Drawing

基于特征的设计方法在三维零件设计中及面向制造的设计过程中得到广泛应用，但是由于二维图形在机械零件设计中的地位，决定了二维图形依然是设计师的表达语言。本文就针对基于零件的二维特征的参数化设计进行了深入的研究，提出了一种基于二维特征的参数化设计的特征分析和特征建模方法，该方法对实现基于二维特征的参数化设计具有重要的意义。

This Paper presents a method of mechanical parts parametric design based two-dimension feature. BasedFeature design method has been used in the three-dimension parts design and the design facting to manufacturing widely.Because the two-dimension parts drawing still is the expressing language of designer,the design of two-dimension mechanical parts is very improtant to product design. In this paper,we present a method of parametric design based twodimension feature of the mechanical parts,and analysis the method of feature classification and feature modeling, the method is very important to realize the parametric design of two-dimension parts.