A Manufacturing Process Using the Impact Compression of a Viscoplastic Pressure Medium : Application to the Piercing of Fine Holes : Vibration, Control Engineering, Engineering for Industry

Abstract

Recent developments in the electronics industry require a piercing technique for making fine holes at a high production rate. The present research attempts to apply to such piercing a new manufacturing process utilizing the impact compression of a viscoplastic pressure medium recently proposed by the authors. As a result, the process is shown to be successful in piercing various fine holes, unobtainable by the conventional shearing process : for example, circular holes of 0.05 mm and 0.1 mm in diameter and a slit of 0.05 mm in width. The piercing pressure is examined theoretically and experimentally.