Research on the Punching Method of Multi-Position Progressive Die with the Feature Unit as the Step

Abstract

This paper analyzes the design method of multi-position progressive die which adopts the existing product length and longitudinal overlap as the step, and proposes the design method of multi-position progressive die which is targeted at feature and adopts the longitudinal length of feature that appears most frequently in the products as one step, in order to deal with all kinds of limitation and weakness of process arrangement in the complex products with medium size. It also briefly explains the controlling procedure of punch and the classification principles of feature. The proposed method shortens the total length of the die, saves the die materials, reduces the difficulty of manufacturing the die, manufacturing cost and production cycle, and improves the stability of feeding materials and manufacturing precision of the product.