CAD/CAM中几何模型系统和数据结构的研究  

A research about geometry modeling system and data structure in CAD/CAM

作　　者：李刚[1] 刘华明[1] 王新龙[1] 

机构地区：[1]哈尔滨工业大学CAD研究室,黑龙江哈尔滨150000

出　　处：《组合机床与自动化加工技术》2000年第5期1-3,共3页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：如何更好地表示三维实体的几何模型，是ＣＡＤ／ＣＡ Ｍ中的首要问题。本文提出的混合模型结构既能完整、精确地表示几何模型，又充分考虑了适应特征造型的发展，便于 ＣＡＤ／ＣＡＭ的集成。改进的翼边结构能够完整无二义性地定义几何实体，方便快捷地访问相关数据，从根本上保证了 ＣＡＤ／ＣＡＭ系统的稳定性及可扩展性。In CAD/CAM, it is the cardinal problem to give a good depletion about geometry modeling of 3D objects. In this paper,we expound a new mixed modeling structure. It is not only can describe a geometry modeling completely and precisely, but also make CAD/CAM very easy to integrate which are fit for the development of feature modeling. The mordified winged edge data structure can modify a geometry object in completely and no - double - meaning, also can visited relative datum expediency and quickly. All of these can make CAD/CAM system have more stability and high expanding feature.

关 键 词：CAD CAM CSG树 几何模型系统 数据结构 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]