Exploring of an open hammer die life with an expanding gutter using information technologies

Abstract

Currently, open dies with a parallel bridge are widely used. The design of such stamps is carried out according to proven methods. However, the dimensions of the bridges obtained do not always provide a sufficiently high durability of the dies. The decrease in the durability of the dies caused by the overestimated resistance of the bridge is especially noticeable in the manufacture of simple forgings that do not have complex cavities filled by extrusion. Thus, industries need more durable tooling that can provide a large number of stamped parts, as well as save money on the development, design and manufacture of a new stamp. To this end, in this paper, an analysis of the application of an expanding burr groove in a tool is considered. Practical experience of how the tooling is worn out with the number of stampings, the geometry of the tooling is measured, an analysis is carried out, and a mathematical model of the behavior of wear based on the experiment is presented. The same equation was obtained using Excel, which indicates that the mathematical model was obtained correctly. In addition, the paper considers the value of individual parameters of the tool geometry on the overall tool life.