On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet Forming

In incremental sheet forming (ISF), the geometrical accuracy is still a challenge that is only solved for specific applications. The underlying mechanisms of geometrical defects in ISF are very complex and still not fully understood. Nevertheless, the process understanding is constantly evolving. Re...

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Main Authors: Thomas Bremen, David Benjamin Bailly
Format: Article
Language:English
Published: MDPI AG 2024-02-01
Series:Journal of Manufacturing and Materials Processing
Subjects:
Online Access:https://www.mdpi.com/2504-4494/8/1/27
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author Thomas Bremen
David Benjamin Bailly
author_facet Thomas Bremen
David Benjamin Bailly
author_sort Thomas Bremen
collection DOAJ
description In incremental sheet forming (ISF), the geometrical accuracy is still a challenge that is only solved for specific applications. The underlying mechanisms of geometrical defects in ISF are very complex and still not fully understood. Nevertheless, the process understanding is constantly evolving. Recent work has shown, for example, how bending moments resulting from residual stresses affect geometric accuracy. It has become clear that resulting bending moments with an axis parallel to the main tool path direction are dominant. Based on that, the current paper investigates the hypothesis that linear and parallel tool paths lead to an unfavourable accumulation of residual bending moments along a common axis, and whether this accumulation effect can be reduced by wave-shaped tool paths. Thus, the described research investigates the influence of novel path strategies on the residual bending moments and the resulting geometrical deviations. The path strategies are based on wave-shaped path lines, whereas the curvature is within the sheet plane. The investigations focussed on a rectangular sheet that is clamped at its shortest edges and a part geometry-sensitive to springback. Experimental and numerical investigations show a significantly positive influence of some investigated path strategies on the geometric deviation, compared to a conventional path strategy.
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spelling doaj.art-1320307d95a349a2a7ad61ab04aeb36d2024-02-23T15:22:54ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942024-02-01812710.3390/jmmp8010027On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet FormingThomas Bremen0David Benjamin Bailly1Institute of Metal Forming, RWTH Aachen University, Intzestr. 10, 52072 Aachen, GermanyInstitute of Metal Forming, RWTH Aachen University, Intzestr. 10, 52072 Aachen, GermanyIn incremental sheet forming (ISF), the geometrical accuracy is still a challenge that is only solved for specific applications. The underlying mechanisms of geometrical defects in ISF are very complex and still not fully understood. Nevertheless, the process understanding is constantly evolving. Recent work has shown, for example, how bending moments resulting from residual stresses affect geometric accuracy. It has become clear that resulting bending moments with an axis parallel to the main tool path direction are dominant. Based on that, the current paper investigates the hypothesis that linear and parallel tool paths lead to an unfavourable accumulation of residual bending moments along a common axis, and whether this accumulation effect can be reduced by wave-shaped tool paths. Thus, the described research investigates the influence of novel path strategies on the residual bending moments and the resulting geometrical deviations. The path strategies are based on wave-shaped path lines, whereas the curvature is within the sheet plane. The investigations focussed on a rectangular sheet that is clamped at its shortest edges and a part geometry-sensitive to springback. Experimental and numerical investigations show a significantly positive influence of some investigated path strategies on the geometric deviation, compared to a conventional path strategy.https://www.mdpi.com/2504-4494/8/1/27incremental sheet formingtool path strategiesspringback
spellingShingle Thomas Bremen
David Benjamin Bailly
On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet Forming
Journal of Manufacturing and Materials Processing
incremental sheet forming
tool path strategies
springback
title On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet Forming
title_full On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet Forming
title_fullStr On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet Forming
title_full_unstemmed On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet Forming
title_short On the Influence of Wave-Shaped Tool Path Strategies on Geometric Accuracy in Incremental Sheet Forming
title_sort on the influence of wave shaped tool path strategies on geometric accuracy in incremental sheet forming
topic incremental sheet forming
tool path strategies
springback
url https://www.mdpi.com/2504-4494/8/1/27
work_keys_str_mv AT thomasbremen ontheinfluenceofwaveshapedtoolpathstrategiesongeometricaccuracyinincrementalsheetforming
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