A Design of Forming Dies for a Manifold of Airbag Inflator

摘要：

The manifolds of airbag inflator were used to be produced by sheet-metal forming. It comprised at least eleven forming stages to achieve its final shape. Uneven wall thickness and poor dimensional accuracy were the common defects because the planar anisotropy of sheet-metal caused earing on the cup rim. In this study, the cup-shape workpiece is obtained from backward-extrusion of billets, followed by two stages of end-forming of tube and three stages of hole-piercing. During the end-forming production, the tool life of the first forming stage was the most severe because it applies close-die forging to increase its rim thickness. Therefore, in addition to the design of prestressed die insert, special attendance is paid to the partition of the die insert to further alleviate the stress level. The optimization of die insert was aided by the finite element analysis of DEFORM software. The results show that by lowering the parting line, the stress level can be minimized. The tool life can therefore be improved.

关键词： Metal Forming Die Insert Prestress Finite Element Analysis Airbag-Inflator Manifold

作者: Heng-Sheng Lin Sheng-Chi Tsai Yuan-Chuan Hsu Ming-Che Hsiao Chia-Chou Ke Bean-Yin Lee

作者单位: Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences,Kaohsiung Metal Industries Research & Development Centre, Kaohsiung 812, Taiwan Department of Mechanical & Computer-Aided Engineering, National Formosa University, Hu-Wei 632, Taiw Shengyang Industrial Co., Ltd., 207, Sec. 1, Yong Fu Rd., Yongjing, Changhua 512, Taiwan

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 849-852

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）