中文摘要：

总结了工艺设计知识获取的途径，提出了大型复杂冲压件工艺设计知识表达的主要方法，运用KBE和特征技术，采用多种知识表达方法实现了对大型复杂冲压件工艺信息知识的描述，并建立了完整工艺信息知识模型，该模型将专家知识、零件信息、工艺设计过程知识、环境知识等工艺信息有效地集成在一起，通过控制机制来确保对知识的高效继承、创新、运用和管理，实现了高层次全局信息的表达．

英文摘要：

The way to obtain process knowledge was summarized and the main metnoas to represent process knowledge for complicated stampings with large scale were given. On the basis of KBE （knowledge-based engineering） and feature technology, the description of process knowledge was realized by using hybrid knowledge representation method and a process information model was established. This model integrated expert knowledge, part information, and process planning knowledge with environment knowledge. It ensured inheritance, innovation, application and management for knowledge by control mechanism, realizing the description of full information with high level.