To demonstrate the suitability of the hybrid drive as the main press drive, a press demonstrator was designed, developed, built, and tested. The hybrid drive consists of four linear motors and two electromagnets. The design and control were implemented to ensure combined forming processes such as bending, cutting, and embossing, taking into account the specific requirements of each. The concept is characterized by high controllability, enabling for the first time the combination of high forming force with high stroke rate and freely adjustable ram trajectory. The properties of this combined drive result in a higher forming quality compared to conventional drives.
The press demonstrator achieves a stroke rate of up to 560 strokes/min for a stroke length of 50 mm, depending on the specified kinematics. Throughout the full stroke length, a forming force of more than 20 kN is achieved. From 1.5 mm before the lower turning point, a forming force of up to 120 kN can be achieved in the combined operation of linear motors and electromagnets.
The former colleagues warmly congratulate Mr. Reich and wish him much success and all the best for his future career path.
