Analysis of influence of drawbead about thinning and wrinkle in low-conical part stamping process

  • Huong Nguyen Van

    University of Transport and Communications, No 3 Cau Giay Street, Hanoi, Vietnam
Email: huongnv@utc.edu.vn
Keywords: low-conical part, drawbead, dynaform, sheet metal forming.

Abstract

Using drawbeads plays an important role in sheet stamping technology because they have an effect on the quality of the sheet metal part. Drawbeads are often used when stamping parts with asymmetrical shapes, complex shapes, and deep drawing to improve the flow of material into the die. Although the low cone is a symmetric part, the relatively small height causes strong elasticity, so during the forming process, the sheet metal is not completed in contact with the surface of the tool. As a result, it is easy to appear wrinkles on the surface causing waste. Therefore, the blank must be stretched by the drawbeads to ensure contact with the punch. The article presents the results of the study of the drawbeads for stamping low-conical details with its specific dimensions for three cases such as without the drawbeads on the blankholder system, with circular drawbead and with rectangular drawbead through numerical simulation using Dynaform 5.9 software and experimenting with the stamping mold with the results given from the simulation to determine the reasonable parameters of the drawbeads.

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Received
16/06/2021
Revised
07/09/2021
Accepted
14/09/2021
Published
15/10/2021
Type
Research Article
How to Cite
Nguyễn Văn, H. (1634230800). Analysis of influence of drawbead about thinning and wrinkle in low-conical part stamping process. Transport and Communications Science Journal, 72(8), 957-966. https://doi.org/10.47869/tcsj.72.8.9
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