**4. Conclusion and discussion**

36 Industrial Design – New Frontiers

Section A

Fig. 27. Section view of addendum of hood B that reused parameters of hood A

Section A

Fig. 26. Section view of addendum of hood A

Fig. 25. Hood B

This study developed a framework in which KBE replaces the conventional method of designing a die face that relies heavily on designer experience and repeated trial and error, especially for addendum design due to the unpredictability of metal blank flow. With KBE techniques, designers can apply parameters from similar cases to a new case. In this study, feature recognition and case representation use features to describe cases and CBR compares features to determine their similarity.

The questions faced after integrating KBE into the design process of a die face is that, due to the geometric complexity of a die face, reuse may not be successful. Additionally, reuse relies heavily on retrieved cases from a case database, meaning that if previous cases are poor or the case database is biased, reuse is not desirable.

In the future, as the number of cases in the case database increases, CBR can search among an increasing number of possibilities to find the most similar case, resulting in desirable reuse. Furthermore, the reuse concept can be extended to the entire die design process, such that convenience for die designers can be increased.
