基于知识的板料冲裁工艺与模具设计支持技术

为了提高板料冲裁工艺与模具设计的质量和效率,实现知识的重用和共享,对板料冲裁工艺与三维模具设计的智能化、参数化设计技术进行了系统地研究,提出了以数据库、框架、规则、面向对象和数学模型等混合方法表示工艺设计知识,以几何模型/数据库混合表示法描述结构设计知识;提出了面向工程的动态设计方法,将实际设计知识记录到动态知识库中,成为半标准化的知识,支持系统的智能设计.根据提出的方法,基于Ⅰ-DEAS软件平台,利用宏命令与API接口函数相结合的方法,建立了冲裁工艺与三维模具设计支持系统,具体设计实例表明所建立的系统大大提高了设计的质量和效率.

Knowledge-based sheet metal blanking process and 3D die structure design

In order to improve the quality and efficiency of sheet medal blanking process and die design and accomplish the reuse and shake of knowledge, intelligent and parametric design technology is studied systematically. The hybrid knowledge representation methods including data base, frame, rule, objected-oriented method and mathematical model are incorporated to represent process design knowledge, geometric model and data base are combined to represent die structure design knowledge; project-based dynamic design method is invented to support the intelligent design. Based on the proposed methodologies, combining the macro function and the API, the knowledge-based sheet metal blanking process and 3D die structure design support system is developed, and the specific design case proves the powerful functionalities of the developed system.