Expert System for Design of Net Shape Forming Processes

摘要

A workpiece (preform) design system for net shape processes such as powder forging, precision forging, cold forging, and warm forging was successfully formulated. The system melds a CAD geometric description of the part, artificial intelligence methods, and analytical (mathematical) methods. The CAD description, based on X, Y nodal point and line and arc elements, serves to establish the geometric data base used throughout the design process. Workpiece material data, die material data, finished part specifications, and process limitations constitute another part of the data base. An additional part of the knowledge base developed for this project is the analytical modules which calculate the pressures required to form each region of the part. These results are used by the control structure to aid the decision making regarding metal flow in the design logic.