2003•Jixie qiangduRequires access

RESEARCH ON PRECISION INFORMATION MODELING IN CAD/CAPP INTEGRATION

Linna Zhang

Abstract

Precision information is an important part in CAD/CAPP/CAM integrated system, the describing and modeling of precision information are one of choke point of realizing CAD/CAPP/CAM integration. This paper regarded precision information as an additional attribute of shape feature, established the relationship between precision feature and shape feature with quote geometry list based on further studying the precision information and its expression in product feature modeling, and one can satisfy integrated product information model that CAD/CAPP/CAM need is formed. Then, the treatment method and process of feature model expression are discussed in detail, feature information is stored by the shared feature database, and its exchange and sharing among CAD/CAPP systems is realized using the interface ASI of database based on ObjectARX ( AutoCAD SQL Interface), the two way operation function of database. This makes it possible to realize the integration of CAD/CAPP.

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Available abstract

Key concepts: CAD, Feature (linguistics), ObjectARX, Engineering drawing, Information model, Computer science, Information integration, Interface (matter)