Abstract
In this paper, a novel multi-ring blank holder technique is developed. The blank holding force (BHF) provided by each ring can be independently and effectively applied on all radial regions. The principles and advantages of the multi-ring technique are first explained and analyzed by theoretical derivation, stress analysis, and forming simulation. The results indicate that the distribution of the blank holder force per unit area (FUA) applied by the new blank holder technique is more reasonable than using the conventional single blank holder and can better suppress the wrinkles. Finally, the effectiveness of the multi-ring blank holder technique is proven by a deep drawing experiment of the 08Al plate. It was verified that due to the reasonable FUA distribution, the use of the blank holder technique can suppress the wrinkles on the flange very well.
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Funding
The work is supported by the National Natural Science Foundation of China (no. 51675466) and the Natural Science Foundation of Hebei Province of China (no. E2021203043). The work is also supported by the Science and Technology Research and Development Program of Qinhuangdao city (no. 202004A005).
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HS Zhang contributed significantly to analysis and manuscript preparation. SJ Qin and LY Meng performed the experiment and contributed to the conception of the study.
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Zhang, H., Qin, S. & Meng, L. Research on deep drawing with multi-ring blank holder technique. Int J Adv Manuf Technol 122, 4115–4126 (2022). https://doi.org/10.1007/s00170-022-10142-1
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DOI: https://doi.org/10.1007/s00170-022-10142-1