摘要
本文在就实体造型、尺寸公差建模、非簇建模、参数化建模、约束建模和特征建模等技术作简要的评述后，提出了在现有ＣＡＤ系统基础上，实现产品特征建模系统开发的方法。系统利用特征定义将实体模型和特征模型紧密联系起来，特征识别和基于特征设计技术相互配合，使用户可自由地选取实体建模操作或特征建模操作来构造具有完整定义的产品模型。
The research for product model definition has ben around for many years. Several representations, such as solid modelling, Dimension & tolerance modelling, nonmanifold modelling,parametric modelling, constraint based modelling and feature-based modelling, having been propoode one after another. After surveying these technologies, the author present a novel theme in which feature-base, product modelling system is developed based on existing CAD system in this paper. The system associates the solid model with feature model closely by means of feature definition and combines both the feature recognition and design-by-feature methods. ms gives the user the freedem of choosing the most convenient means of expressing each required operations for completely defining product model.
出处
《计算机应用》
CSCD
1995年第3期38-40,共3页
journal of Computer Applications
关键词
CAD
产品模型
实体造型
特征识别
CAD
Product model definition
Design by feature
Feature recognition
Solid modelling
