Transactions of Materials and Heat Treatment

Title：Design of hydraulic drawing blank holder

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ClassificationCode：TG76

year,vol(issue):pagenumber：2021,46(5):53-56

Abstract：

In the deep drawing process of sheet metal, the blank holder device has great influence on the optimization of deep drawing process and the quality of deep drawing parts. Therefore, the relationship formula between blank holder force and stroke (drawing depth) in the deep drawing process was derived, and a hydraulic blank holder device was designed to optimize the deep drawing process according to the relationship formula. Then, the hydraulic blank holder device drove the gear to rotate to change the setting value of relief valve to change the blank holder force by rack and pinion structures, and the blank holder force was controlled dynamically. Considering the defect that the segmented blank holder was easy to produce bump marks of part in the seam of segmented blank holder, the S-shaped seam was designed, and according to the theoretical formula, a simple and practical blank holder device of deep drawing was designed. For the deep drawing parts with complicated drawing process, the blank holder forces at different positions and stages of part during the deep drawing process were effectively controlled to prevent the parts from wrinkling, thinning and cracking etc. and reduce the number of deep drawing and the cost.

Funds：

太原工业学院2018年度院级科学基金项目(2018LG07)

韩海军（1968-），男，学士，高级工程师 E-mail：690131574@qq.com

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