A study of the control of the blank holding force using an MR damper in a drawing press

作者：Yun Young Won; Bae Hyung Sub; Park Myeong Kwan^*

来源：Journal of Mechanical Science and Technology, 2010, 24(11): 2281-2288.

DOI：10.1007/s12206-010-0808-3

• Blank holding force
• Closed loop control
• Damper
• Drawing press
• Magneto rheological fluids

The predominant failure modes (wrinkling and tearing) must be avoided during the drawing process in sheet metal forming These defects may be eliminated by using a controllable device for which the blank holding force (BHF) is adjustable The purpose of this research is to verify the possibility of using a magneto-rheological (MR) damper for obtaining an almost constant BHF in drawing presses The damper force is controlled by adjusting the current that is applied to the MR fluid, which is a functional material To realize this aim, a prototypical press system is manufactured A control test using a closed-loop PID controller is carried out for achieving the objective where by a constant BHF is retained at a constant prescribed force, while the press slide translates at a constant velocity The results show that the BHF of the drawing press can be controlled effectively by using the proposed MR damper

• 出版日期2010-11