Abstract
The spring back on car body parts defines their dimensional accuracy. Throughout the production process in press shops the conformity with the geometrical specification is inspected by tactile or optical measuring devices offside the production line in no particular order. To enable an efficient control of dimensional accuracy during production processes, this study deals with the investigation of a tool-integrated measuring system, which generates specific geometrical information for every produced part. On a pilot basis, eddy current sensors for distance measurement are integrated into the tool-support of an inner door panel. The system shows that it is able to detect process variations such as different material batches or variations in blank holder forces and their effect on the forming process, resulting in changes of the car body geometry.
Similar content being viewed by others
References
Hoffmann H, Zäh M, Faass I, Mork R, Golle M, Griesbach B, Kerschner M (2007) Automatic process control in press shops. Key Eng Mater 344:881–888
Weikmann J (2010) Assistenzsystem für die Prüfung von Blechbauteilen mit Mehrkomponenten-Streifenprojektionssystemen unter Anwendung der virtuellen Rückdeformation. Dissertation, Universität Erlangen-Nürnberg
Doege E, Seidel HJ, Griesbach B, Yun JW (2002) Contactless on-line measurement of material flow for closed loop control of deep drawing. J Mater Process Technol 130–131:95–99. doi:10.1016/S0924-0136(02)00763-X
Neumann A, Hortig D, Merklein M (2011) Measurement of material flow in series production. Key Eng Mater 473:137–144. doi:10.4028/www.scientific.net/KEM.473.137
Abdullah A, Sapuan S, Samad Z, Aziz N (2012) A comprehensive review of experimental approaches used in the measurement of springback. Adv Nat Appl Sci 6:195–206
Krinninger M, Opritescu D, Golle R, Volk W (2016) Experimental investigation of the influence of punch velocity on the springback behavior and the flat length in free bending. Procedia CIRP 41:1066–1071
Groche P, Beiter P, Henkelmann M (2008) Prediction and inline compensation of springback in roll forming of high and ultra-high strength steels. Prod Eng Res Dev 2:401–407. doi:10.1007/s11740-008-0131-3
Hamedon Z, Mori K, Abe Y (2014) In-situ measurement of three-dimensional deformation behaviour of sheet and tools during stamping using borescope. J Mater Process Technol 214:945–950
Furrer P, Harings R (2010) Fusion-Verbundbleche für den Automobilbau. ATZextra 15:18–21
Groche P, Schreiner J, Hohmann J, Birkhold M, Lechler A (2014) Industrie 4.0 - Chancen auch für die Umformtechnik. VDI-Z 156:28–31
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Maier, S., Liebig, A., Kautz, T. et al. Tool-integrated spring back measuring system for automotive press shops. Prod. Eng. Res. Devel. 11, 307–313 (2017). https://doi.org/10.1007/s11740-017-0725-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11740-017-0725-8