Study On Modular Design Method For Large Progressive Die Of Car Door Hinge Series

In recent years, the rapid development of automotive industry has brought newopportunities to the development of automobile parts manufacturing industry. The presentprocessing methods of automotive structural parts represented by car door hinges are mainlyin a single process stage die. Its uses of a lot of equipment and low productivity make moreand more manufacturers of mold resort to multi-position progressive die for automotivestructural parts. Traditional design method by multi-position progressive die involves suchproblems as heavy repeated workload, low efficiency, and a long design time, which is notconducive to enhancing the competitiveness of mold enterprises. Considering the currentsituation and problems, this paper focuses on multi-position modular design approach, whichtakes the large scale progressive die of car door hinges as the object of study, and aims tosolve the problems of long design time and low efficiency of traditional methods.In this paper, knowledge reuse technology is applied to large progressive die modulardesign of car door hinges and the large progressive die modular design of car door hingeseries is completed, with the clue being block acquisition, storage and reuse. Firstly, ananalysis is made as to the structure of car door hinge molds in recent eight years supplied byTianjin Jinzhao Machine&Electronics Development Co., Ltd. These molds are classified intomode modules, process modules, auxiliary modules, and standard modules according to thestructural characteristics of car door hinge molds. A standard modular system is built based onthe common features of car door hinge molds of the same module type. Document module isbuilt based on the nesting feature of car door hinge mold, tryout and repair records, and otherinformation. Secondly, the classified modules are marked by extensible markup language ofXML and the label information of the module is obtained, which is stored in the moduledatabase with the module. A system platform for multi-position progressive die of car doorhinge on modular design is designed, in which module information could be added, subtracted,deleted and displayed. Stamping die modular design as well as assembly operation of moduletesting and integration model are achieved with the help of retrieval system designed by VBprogramming techniques and UG secondary development system platform. Finally, taking themodular design of the front door hinge of Hyundai progressive die for example, this paperdescribes the use of modular design system on module retrieval, module extraction, andmodule assembly process to achieve the application of module design on large car door hingeseries progressive die.Nowadays, design of stamping die over-rely on the experience of designers, while it maytake a lot of manpower and material resources for mold companies to cultivate an experienceddesigner. Modularity design system of stamping die designed by this paper is easy to learnand it is easy for new staff to master the key of mold design and put it into productioninstantly to create more value for the enterprise.