Research on Case Representation and Case Retrieval Algorithm for Stamping Die

In allusion to the traditional case retrieval technology disadvantage of die design, a rough set-based case retrieval method is presented in the die design. To analyze and deal with die case database using rough set theory, and use a method by using grade classification and decision attributes supporting degree to discretize the quantitative features. It confirms the important degree of all types of characteristic attributes. To aim to build up a retrieval method based on case´s key attributes. It uses the similarity method to carry on the similarity degree, retrieve the closest design the case from the case database to take the design case reference. The proposed method is also demonstrated by an application example. The technology guarantees the validity of case retrieval reduces system dependence and improves efficiency of case retrieval.