钣金模具组件中超过一半的部件是标准零件。随着CAD/CAM/CAE系统在钣金模具设计和制造中的广泛应用，需要改变通过目录和手工创建订单来选择和采购标准零件的传统方式。本文介绍了开发面向对象数据库的结构和要求，该数据库是标准件信息升级和在线检索系统的核心。它还促进了零件的电子采购。文中还讨论了STEP的应用及其方法。

OVER HALF OF THE COMPONENTS IN A SHEET METAL DIE ASSEMBLY ARE STANDARD PARTS. WITH WIDE APPLICATION OF CAD/CAM/CAE SYSTEMS IN THE DESIGN AND MANUFACTURING OF SHEET METAL DIES, THE TRADITIONAL WAY OF SELECTING AND PROCURING STANDARD PARTS THROUGH CATALOGUES AND MANUALLY CREATED ORDER SHEETS NEEDS TO BE CHANGED. THIS PAPER PRESENTS THE STRUCTURE AND REQUIREMENTS OF DEVELOPING AN OODB WHICH FORMS THE KERNEL OF A SYSTEM ALLOWING UPGRADING AND ON-LINE RETRIEVAL OF STANDARD PARTS INFORMATION. IT ALSO FACILITATES ELECTRONIC PROCUREMENT OF THE PARTS. THE APPLICATION OF STEP AND ITS METHODOLOGY IS ALSO DISCUSSED.