Verfahren zur Steuerung einer Antriebsvorrichtung für einen Pressenstößel einer Umformpresse

摘要

The invention concerns a method of controlling the ram speed of a press ram (20) in a shaping press and a drive device, in particular for carrying out this method. According to the invention, at least one energy store is connected to an accessory drive (3), to which the main drive (100) is connected for controlling the ram speed. The energy store stores the energy released during a negative acceleration of the press ram. Furthermore, additional energy for accelerating the press ram (20) is recovered during a further stroke and fed into the main drive (100) via the accessory drive (3).