Deep drawing device with new computer multi-point controlled upper variable blank-holder force

DING Ming-ming1， XV Shao-ning2， CAI Dan-yun1
（1. Zhejiang University of Water Resources and Electric Power， Hangzhou 310018， China，
2. Zhejiang Institute of Mechanical Industrial Information， Hangzhou 310009， China）

Abstract： Aiming at the construction defects and low rigidity of the variable blank holder force hydraulic press，a deep drawing device with computer multi-point controlled upper variable blank-holder force was developed. Details of the device，such as the design method， structure， the working principle，design and realization of the hydraulic system and control system，were presented. The test of deep drawing for a rectangular box and a cylindrical cup formed component was carried out to verify the effect of application of this device. The results show that the deep drawing device is featured with low cost，versatility and high efficiency，popularization and application.
Key words： hydraulic press with variable blank-holder force； multi-point control； deep-drawing