Computer Aided Progressive Die Design

Summary

The MEL system which offers advantages in improving the design process is described. Our system consists of ten steps. Each step can be used independently of the others. This method enables us to design a new die, and, in addition, changes and corrections of part of an existing die can be done easily. In our system, a product shape is input hierarchically using elements such as points, lines, and circles, closed figures consisting of these elements, patterns consisting of these closed figures, and the product consisting of these patterns. We introduce a concept of the basic pattern which corresponds to the shape of a standard punch. There are several of these. These patterns can be input efficiently using the macro commands for the pattern in the hierarchy, hence input is simple and the programming can be done quickly. The great benifits accrue from these patterns, i.e., the most effective blank and strip layout including information of the tool configuration can be done quickly.