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Microforming Technology by Haibo Xie, Jingwei Zhao, Zhengyi Jiang

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Chapter 18

Practice of Micro Hydromechanical Deep Drawing

Abstract

This chapter presents the development of a micro hydromechanical deep drawing (MHDD) apparatus for manufacturing a micro-complex-shape component with high accuracy. This apparatus with simple tooling structure and forming process can achieve high dimensional accuracy using servo press mechanics with one-stroke forming process without transferring and positioning, force control, and fine flow-rate control of the pressure medium. The developed MHDD system can prevent wrinkling by applying an appropriate constant gap and generated the counter pressure. Also, the effects of counter pressure on drawability and dimensional accuracy at the bottom of the drawn cup are investigated for phosphor ...

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