Abstract
In this paper, an independent blank holder technique is proposed for the deep drawing of the conical cup. The blank holding force (BHF) can be applied on all radial flange regions independently in a more convenient way. The principles and advantages of the new blank holder technique are first expatiated and analyzed by theoretical derivation and numerical simulation. The results show that the forming quality can be significantly improved by the independent blank holders. Finally, the effectiveness of the new blank holder technique is proven by forming simulations and experiments with galvanized sheets. Because BHF applied on all radial areas are more reasonable, the wrinkles of the drawn cups are better eliminated using the new blank holder.
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Funding
The authors are pleased to acknowledge the financial support of 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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Zhang, H., Qin, S. Forming of conical cup using independent blank holders. J Braz. Soc. Mech. Sci. Eng. 44, 454 (2022). https://doi.org/10.1007/s40430-022-03747-w
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DOI: https://doi.org/10.1007/s40430-022-03747-w