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Effect of roller dies on springback law of profile for flexible 3D multi-point stretch bending

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Abstract

With the increasing demand of the parts with multi-segment curvature, long length, and complex section shape, the required target shape is more and more difficult to meet. In this article, a flexible three-dimensional (3D) multi-point stretch bending processing method for a roller die is proposed, and a flexible 3D stretch bending equipment of a roller die is developed. With the application of flexible 3D stretch bending technology of roller dies, the complex 3D parts can be formed at one time with only two degrees of freedom. In order to better evaluate the springback deformation of 3D parts, the total springback process of the flexible 3D stretch bending parts of a roller die is divided into two parts: horizontal bending springback distance and vertical bending springback distance. The springback law of different length profiles is studied by numerical simulation and compared with the experiment. From the perspective of springback, this study analyzes the parts produced by the 3D FSBRD process and studies the influence of different process parameters on springback.

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Funding

This work was financially supported by the National Science Foundation of China (51675225), the Project of Jilin Provincial Scientific and Technological Department (20180201074GX, 20190201110JC, 20190302037GX), the China Postdoctoral Science Foundation (2017 M611321), the Project of Education Department of Jilin Province (JJKH20180943KL), and the Project of Jilin Province Development and Reform Commission (2019C046-2).

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Correspondence to Ce Liang.

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Liang, J., Chen, C., Li, Y. et al. Effect of roller dies on springback law of profile for flexible 3D multi-point stretch bending. Int J Adv Manuf Technol 108, 3765–3777 (2020). https://doi.org/10.1007/s00170-020-05655-6

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  • DOI: https://doi.org/10.1007/s00170-020-05655-6

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