Transactions of Materials and Heat Treatment

Title：Incremental forming performance of retiary sheet metal

Authors： Zhang Shuqin Wang Jin Shi Jichen Zhang Xiaobo Zhang Zhigang

Unit： Qingdao Technological University Rizhao Steel Holding Group Co. Ltd.

KeyWords： retiary sheet metal incremental forming single-point incremental forming point-press incremental forming fixed angle cone cup

ClassificationCode：TG386

year,vol(issue):pagenumber：2016,41(8):48-52

Abstract：

The fixed-angle conical cup experiments for the retiary sheet metals were carried out by single-point and point-press incremental forming respectively. The results show that forming limit angle 48° is obtained by single-point incremental forming, and forming limit angle 45° is obtained by point-press incremental forming. However, circle holes turn into elliptical hole at the area of deformation by the above incremental formings. Furthermore, the long axis sizes of elliptical hole were measured for the 42 °cone cup. Thus, retiary deformation in the single-point incremental forming is relatively smaller. Then, the forming processes of the 42 ° cone cup by the two kinds of incremental forming were simulated by dynamic finite element software, and the changes of strain, thickness and forming force were studied and compared. The numerical simulation results show that the changing ranges of strain and thickness are smaller in the point-press incremental forming, and the forming force reduces by 44% compared with that of single-point incremental forming. Finally, the thickness of the elliptical hole at short axis side reduces more than that at long axis side by the above incremental forming methods for circle hole plate.

Funds：

国家自然科学基金资助项目（51205217）

张淑芹（1988-），女，硕士研究生王进(1978-)，男，博士，副教授

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