Abstract
Lubricant is harmful in metal forming process from the ecology point of view. In this study, a new combination blank holder vibration and fuzzy adaptive control was proposed and implemented in order to reduce friction effect with no lubricant in deep-drawing operation. The fuzzy adaptive control scheme used in this study is that minimum blank holder force(BHF) is momently applied to control wrinkles occurred during deep-drawing process. The deep-drawing experiment was carried out using mild steel and the forming load and energy were compared with four conditions such as constant BHF, BHF vibration, BHF fuzzy adaptive control, BHF vibration and fuzzy adaptive control. As a result, a new combination control scheme is seen to be considerably effective to reduce the forming load and is expected as a dry forming technique.
