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Research on Control Technology of Variable Curvature Bending Springback Based on Iterative Compensation Method

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International Journal of Precision Engineering and Manufacturing Aims and scope Submit manuscript

Abstract

The springback control method is usually based on surface compensation to make the shape of the springback consistent with the target. At present, it is mainly realized by theoretical calculation or numerical simulation, but the difference between material model and theoretical model leads to unstable compensation accuracy. In this paper, a compensation mechanism which based on the iterative principle of implicit equation is proposed from the point of view of mathematical analysis. The final shape of the part converges to the target shape by means of finite compensation with the iterative method. In this paper, the iterative compensation mechanism is applied to the free bending and stretch-bending processes under plane stress state, and the uniform curvature and variable curvature are compensated iteratively. The next iteration compensation profile is predicted according to the convergence of the iterative principle. Experimental results show that the iterative compensation method can predict the next compensation value, and the error is less than the target value after 2–3 iterations. The error convergence of the method studied in this project is directional and the convergence speed is fast. The compensation value can be quantitatively predicted, which has theoretical significance and application value for engineering design, mold repair and numerical simulation.

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Funding

This topic is from the Natural Science Foundation Project of Hebei Province (Fund Project No. E2011203008) "Research on Intelligent Control Technology of JCO Forming Based on Machine Vision"; Technology special project "development and application as well as hebei province natural science fund project" bending springback control technique based on iterative compensation mechanism research "(fund project Numbers for No. E2015203244).

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Authors and Affiliations

  1. Key Laboratory of Advanced Forging & Stamping Technology and Science (Yanshan University), Ministry of Education of China, Qinhuangdao City, P.R. China

    Rui Ma, Ruixue Zhai & Jun Zhao

  2. School of Yanshan University, College of Mechanical Engineering, Qinhuangdao, China

    Chao Ma

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  1. Rui Ma
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  2. Chao Ma
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  3. Ruixue Zhai
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  4. Jun Zhao
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Correspondence to Ruixue Zhai.

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Ma, R., Ma, C., Zhai, R. et al. Research on Control Technology of Variable Curvature Bending Springback Based on Iterative Compensation Method. Int. J. Precis. Eng. Manuf. 23, 489–501 (2022). https://doi.org/10.1007/s12541-022-00621-6

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  • DOI: https://doi.org/10.1007/s12541-022-00621-6

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