The thesis introduces the key technology for development of bending die CAD system, including API of SolidWorks, the way of customization development, database and reusable component technology.

• 本文首先介绍了三维CAD及其相关技术，包括SolidWorks的应用编程接口，SolidWorks二次开发方法，数据库技术，ActiveX技术和构件技术。