New Forming Technologies Using Screw Type Servo Press

Servo drive presses have the potential to improve process conditions and productivity in metal forming. The first mechanical servo press was pioneered and built in Japan, where several press builders developed gap and straight-sided metal forming presses that utilized this new mechanical servo-drive technology. The screw type servo press has inherent advantages over the crank type servo press. In addition, a new technology called “one shot forming” , which further utilizes the advantages of the servo press, was developed. Next, we developed a parallel control system for the screw type servo press that maintains the parallelism of the press slide under eccentric loading conditions. Utilizing this new control system, “progressive stair-die stamping” technology was developed. In this article, we briefly introduce these new screw type servo press technologies.