プロダクトモデルに基づく鉄道台車ＣＡＤシステムの開発

Abstract

Recently CAD/CAM has been applied in many fields to achieve high level automization in design and manufacturing process. The current approach in mechanical industrial field is a partial automization that replaces drafting and machining procedure (NC programing) with a computer process. This type of approach is not enough in higher level design process and manufacturing process, because it uses only geometry and can't resolve the treatment of inherited technical knowledge in design and manufacturing. This is an important problem in practical design and manufacturing. A distributed type of intelligent CAD system was developed at the authors' company for the purpose of improving productivity and quality in both construction of design process and manufacturing process. The principal feature of this system is as follows : After the fundamental design is executed by the intelligent CAD system based on the object-oriented database, the attributes of geometry and design information (or design contents) that is generated from the intelligent CAD drive the conventional CAD systems simultaneously.