An Introduction to SEYI Servo Press Slide Motions

As materials become stronger and parts become more complex, traditional presses need to make sacrifices in speed, tonnage, and flexibility. Having a press that can be optimized for each part being made allows stampers to be more productive with less equipment. SEYI servo presses can be used in all stamping applications and industries to meet users’ unique demands and applications.

Thanks to SEYI’s powerful low speed, high-torque servo motors and control system, the press slide motion is fully programmable.By using an optimized motion control, servo presses can eliminate spring-backs or cracks with a much lower tool wear rate.The motor allows the slide to move up and down quickly to make sure overall production speed is optimal. For instance, the slide can move down slowly while forming but up rapidly after stamping the parts. Post-processing tasks such as in-die piercing may be done at the same time since the overall efficiency enhances.

SEYI offers 7 default motions and 1 free motion profile in our servo control. Here is an introduction to some of the most frequently used motions.

Link Motion: Programmable and optimized

A rapid approach with a programmed slowing of the slide speed at a specified location can offer increased productivity, better quality, reduced reverse tonnage, and improved tool wear. 

Half Motion: Increased throughput

By reducing the stroke length of the press, SEYI servo presses can eliminate unnecessary press movement, increasing the production output and saving on electrical power consumption. The production output can be doubled at most while running progressive dies with Half Motion.


                                         Progressive Die Stamping with Half Motion video

Hold Motion: A useful alternative for hot stamping

Hold motion pauses the slide motion at B.D.C. for a programmed time interval, allowing a heated blank to form and cool with the die. Compared to traditional hot stamping processes, production rates can increase 20% or more, operating costs can be reduced up to 50%, and electrical power consumption can be reduced by up to 70% or more.


                                                              Hot Stamping Video

Free Motion (Coining): Suitable for difficult to form materials

Springback effect can be reduced or eliminated by hitting the material multiple times at B.D.C. Often, this coining or restriking motion can be done in a single die station. See the video.

Vibration Motion: Possible to reduce die stages

This motion can be used for deep drawing while providing high accuracy and quality. The number of die stations can be reduced, resulting in lower tooling costs and higher productivity. This motion is also suitable for tapped hole production. See the deep drawing video.