Burr-Free Microblanking Using Piezoelectric Actuator

Abstract

Burr-free blanking requirements are strong; however, the thinner the product, the more difficult the burr-free blanking will be, due mainly to the control of the punch penetration depth. In this study, the principle of accompanying burr-free blanking problems, and the driving mechanism of methods for realizing burr-free blanking of foil were realized. The conditions for realizing successful burr-free blanking are the clearance of step 1 and punch penetration depth. Use of the piezoelectric actuator element and the design method for this was proposed as the punch drive mechanism. Good results were obtained by using this press machine for burr-free blanking of 50 μm copper foil.