A feature-based parametric modeling system for CAD/CAPP/CAM integrated system

For shortening the product development time, this paper proposes a feature based parametric product modeling system, called ZD-MCADII, which is suitable for the integrated engineering design in CIM system environment. The architecture of ZD-MCADII and the characteristics of its modules are described in detail. The ZD-MCADII product data is managed by an object-oriented database management system OSCAR, and the product model is built according to the standard STEP. As the product design is established on a unified product model, all product data are globally associated in ZD-MCADII. ZD-MCADII provides various design features to facilitate the product design, and supports the integrity of CAD, CAPP and CAM.