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arXiv · 2509.10272

TubeBEND: A Real-World Dataset for Geometry Prediction in Rotary Draw Bending

Zeyneddin Oz·Jonas Knoche·Alireza Yazdani·Bernd Engel·Kristof Van Laerhoven
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Abstract

This paper presents TubeBEND, a real-world dataset comprising 318 rotary tube bending processes, which were collected and sorted by experts from various fields to evaluate machine learning and signal analysis methods. The dataset addresses the industrial challenge of predicting the geometry of a first-stage bend, which can be beneficial for designing machine clamping molds for the second-stage bend in two-stage rotary draw bending. Some geometry criteria, such as the tube's final bent angle (or springback) and its cross-sectional deformation, are being recorded in this dataset. This dataset gives us the possibility to build and test machine learning models that can predict the geometry and help the machine operators with a better machine setup to optimize the tube's springback and deformation. Moreover, by recording some process parameters, such as tool movements and forces or torques applied to them, we deliver detailed information about their impacts on the final tube geometry. The focus of our work is to discover solutions that can replace traditional methods, such as trial-and-error or simulation-based predictions, by including experimental process variables in ML algorithms. Our dataset is publicly available at https://github.com/zeyneddinoz/tubebend and https://zenodo.org/records/16614082 as a benchmark to improve data-driven methods in this field.

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Zeyneddin Oz, Jonas Knoche, Alireza Yazdani, Bernd Engel, Kristof Van Laerhoven. 2025-09-12. TubeBEND: A Real-World Dataset for Geometry Prediction in Rotary Draw Bending. https://arxiv.org/abs/2509.10272

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