Volume 3, 2016
|Number of page(s)||8|
|Published online||26 February 2016|
Iterative process control and sensor evaluation for deep drawing tools with integrated piezoelectric actuators
Technology Development Tool Shop and Press Shop, Volkswagen AG, 38440
2 Head of Tool Shop of the Volkswagen Brand, Volkswagen AG, 38440 Wolfsburg, Germany
3 Fraunhofer Institute for Machine Tools and Forming Technology (IWU), 09126 Chemnitz, Germany
* Corresponding author: firstname.lastname@example.org
Accepted: 2 January 2016
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 processed and used to adopt the applying actuator force iteratively to reduce the occurrence of cracks. It was shown that process control helped to improve the quality of the stamping parts significantly.
Key words: Closed-loop control / Deep drawing / Process control / Piezo actuators / Production engineering / Sensor technology
© T. Bäume et al., Published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.