STEP(Standard for the Exchange of Product Model Data) has been worked out by ISO. The technology integration of CAD and CAPP System based on STEP Standard was introduced and the integration project based on the PDM platform was provided in this paper.

• STEP (StandardfortheExchangeofProductModelData)标准是国际化标准组织制定的产品数据表达与交换的标准 ,本文介绍了在通过STEP标准来实现CAD/CAPP系统集成的技术 ,并给出了基于PDM的集成方案