Step by step control of a deep drawing process with piezo-electric actuators in serial operation
1 Volkswagen AG, 38440 Wolfsburg, Germany
2 Fraunhofer Institute for Machine Tools and Forming Technology (IWU), 09126 Chemnitz, Germany
a Corresponding author: e-mail: firstname.lastname@example.org
Due to the design-driven increase in complexity of forming car body parts, it becomes more difficult to ensure a stable forming process. Piezoelectric actuators can influence the material flow of stamping parts effectively. In this article the implementation of piezoelectric actuators in a large scale sheet metal forming tool of a car manufacturer is described. Additionally, it is shown that part quality can be assessed with the help of triangulation laser sensors, which are mounted on the blankholder. The resulting flange draw-in signals were used to reduce the occurrence of wrinkling or the rate of cracking. It was shown that process control improved the quality of the stamping parts significantly.
© Owned by the authors, published by EDP Sciences, 2015
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