Siemens Aktiengesellschaft

Trumpf Maschinen Austria Gmbh & Co Kg

Burkhard Heller

Gerhard Sperrer

Michael Kaever

Nader Ridane

Heinz Leumüller

Andreas Sternberg

Martin Ruzovic

Harald Kneidinger

Christian Gasser

Volodymyr Nedashkivskyi

With a method according to the invention for free bending, a workpiece to be machined, such as a sheet metal plate, is brought into contact with a bending edge of a lower die. A bending punching tool is moved opposite to the lower die, such that the sheet metal plate is bent by the punching tool in terms of generating a predetermined target bending angle across the bending edge. In this case, the achieved bending angle is measured at least after a first bending process and the bending force to be applied and the measuring curve resulting therefrom are determined during the bending process as a function of the traverse path of the bending punching tool. A correction value for the course of the bending process is subsequently determined from the resulting deviation between the predetermined target bending angle and the achieved bending angle and as a result of the detected measurement curve and a model-based calculation of the bending behavior and further bending processes are carried out in view of the correction values.

Method for free bending

Growing community of inventors

Leonding, Austria

Burkhard Heller