基于历史的零件模型快速生成

提出了一种新的几何元素的方向表示方法并建立了基于历史的参数化过程中的建模参数与形体的关联，并在此基础上形成了一种基于历史的零件模型的快速生成方法。

First a historybased part model is presented in this paper. Then a new orientation expression of geometry elements is given and the association between modeling parameters and the Brep is built after analyzing the characteristics of historybased part model. Based on these, a method for rapidly generating historybased part model is formed. At last the result of the evaluation manifests that this method is effective.