In-Process Tool Deflection Measurement in Incremental Sheet Metal Forming
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Terlau et al_In-Process tool deflection measurement in incremental sheet metal forming_2022_accepted-version.pdf | 1.14 MB | Adobe PDF | View/Open |
Authors: | Terlau, Marina ![]() von Freyberg, Axel ![]() Stöbener, Dirk ![]() Fischer, Andreas ![]() |
Abstract: | Incremental sheet forming is an economical alternative to deep drawing for forming large sheets in small quantities. However, the shape deviations resulting from a process-force-caused tool deflection limits the measuring accuracy. Therefore, an optical multi-sensor system is proposed to enable the contactless in-process measurement of the tool deflection independent of the machine kinematics for the first time. The presented design study of the sensor system aims to meet the requirement of a maximal measurement uncertainty of 15 µm at a measuring distance of up to 2 m. The multi-sensor system consists of a large number of inexpensive angulation sensors, each of which measures an angle to a light source on the tool. Based on the measured angles of all sensors calibrated to each other, the position of the tool in the three-dimensional manufacturing volume can be calculated by multi-angulation. Via experimental characterization of a realized angulation sensor as well as an uncertainty propagation, the measurement uncertainty achievable with the overall system is estimated. As a result, the multi-sensor concept fulfills all requirements for the measurement of the tool deflection in incremental sheet metal forming. |
Keywords: | Incremental sheet forming; Shadow imaging; Multi-angulation | Issue Date: | 12-Sep-2022 | Publisher: | IEEE | Journal/Edited collection: | 2022 IEEE Sensors Applications Symposium | Pages: | 6 | Type: | Konferenzbeitrag | Conference: | 2022 IEEE Sensors Applications Symposium (SAS) | ISBN: | 978-1-6654-0981-0 | Secondary publication: | yes | Document version: | Postprint | DOI: | 10.26092/elib/3649 | URN: | urn:nbn:de:gbv:46-elib87295 | Institution: | Universität Bremen | Faculty: | Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04) Zentrale Wissenschaftliche Einrichtungen und Kooperationen |
Institute: | Bremer Institut für Messtechnik, Automatisierung und Qualitätswissenschaft (BIMAQ) MAPEX Center for Materials and Processes |
Appears in Collections: | Forschungsdokumente |
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