Hydroforming Presses

Thanks to extremely high closing force potentials, the C-frame press is especially suitable for the economic production of long components such as for example side rails or cross members, roof frames and other component groups. In 2002, we developed the Graebener RoboClamp®, the world's most powerful hydroforming press. This press provides easy access from three sides, tool change and loading are carried out by robots.

C- frame presses are standardized for closing forces of 3,250, 6,500, 13,000 and 18,000 t.

Frame presses are designed as rigid welded constructions. These compact presses are especially suitable for the low-pressure hydroforming and for smaller components, such as exhaust parts or fittings like tees and reducers.

An optimum forming process is also depending on a perfect interaction of operator and machine. For this purpose, the visualization system PressPro® has been developed. With the aid of PressPro®, the operator can develop, optimize and execute the forming process independently. The open and flexible system allows freely definable process steps for prototyping as well as for series production. Pre-defined sequences can be assigned to each tool, saved in the corresponding tool data base and accessed from there as well. Main advantage: The time between the tool set-up and the production of the first "good" part can be reduced significantly.

For an optimum control of the highly complex process sequence we have been working successfully with our partner Bosch Rexroth for many years. Based on the Motion Logic System Indra-Motion MLC, Rexroth has developed a completely new control and feedback control system which has been tested exclusively in our Prototyping Center and continuously refined later on from both partners. The entire control system for hydraulic, electric and hybrid drives builds on a compact controller-based hardware. Here the PLC merges with the motion controller to a new system.