In order to solve the problem of CAPP similar process search under extranet environment, the concept of part key identifier is advanced and the part key identifier based CBR is used to realize derives of process.

• 为了解决企业网络环境下CAPP系统相似工艺检索的问题,提出了零件关键标识的概念,采用基于零件关键标识的实例推理方法实现了工艺派生。