Flanged Components for Design and Optimisation of Stamping Dies

Abstract

This paper presents a comprehensive study on the stamping die design for a flange part. The development history and current status of stamping die technology at home and abroad are first reviewed, highlighting intelligence and automation as the key future directions. The research aims to provide theoretical guidance and practical references for die development of similar parts, while laying a foundation for promoting the intelligent upgrading of stamping dies. According to the structural features and technological requirements of the flange, 15 steels with 3 mm thickness, IT14 precision, and medium-to-large batch production are determined. Three alternative process plans—single-operation dies, compound dies, and progressive dies—are compared. Flange parts are typical non-flanged cylindrical deep-drawn components that are extensively employed in automotive pipelines, hydraulic elements, and household appliances. The optimal solution, a compound dies for blanking, drawing and reverse drawing plus a separate piercing die, is selected. Critical parameters such as blank size, strip layout, material utilisation, punching forces, and die-cutting clearances are calculated, and a suitable press is chosen. Subsequently, the structural designs of the die components—die block, punches, compound punch–die, stripper plate, backup plates, and die set—are detailed, and standard elements are selected. Assembly drawings of the compound die and the piercing die are finally produced. The results show that the developed dies are compact, user-friendly, highly productive, and fully meet the accuracy requirements, offering strong engineering applicability. The two resulting die assembly drawings show compact structures with reliable positioning and safe operation, meeting the requirements of medium-to-large batch production at IT14 accuracy. Through this project, the authors not only consolidated their theoretical knowledge of stamping dies and proficiency in CAD/CAE tools, but also enhanced their ability to analyse and solve problems independently, laying a solid foundation for future work in die and related mechanical design.