Transactions of Materials and Heat Treatment

Title：Flexible curling of thinwalled sheet based on multidirectional incremental forming process without die

Authors： Fang Jizhao Wen Tong Liu Kefan Bai Hongtao Zhu Tengxue

Unit： Chongqing University

KeyWords： incremental sheet forming curling buckling defect control forming without dies

ClassificationCode：TG386.43

year,vol(issue):pagenumber：2018,43(6):42-46

Abstract：

Traditional curling technologies of thinwalled sheet can hardly meet the requirements of personalized needs and development of new products. Therefore, a new method of flexible curling of thinwalled sheet was studied based on multidirectional incremental forming process without die. Then, aluminum alloy Al6061 plate with thickness of 1 mm and stainless steel SUS 304 plate with thickness of 0.27 mm were conducted by curling experiments and numerical simulation through improved tool head, and the influences of processing parameters on force and deformation were analyzed. Furthermore, the formation and control method of typical defect was discussed. The research shows that this method can realize the flexible curling of sheets without die and greatly extend the forming range of incremental forming. And warping, buckling, surface scratch and defects caused by the end effect during the processes can be controlled by reducing feed rate, adding preforming, modifying lubricating condition and changing tool head shape.

Funds：

国家自然科学基金资助项目(51575066)

方继钊（1992-），男，硕士研究生；Email：20150902014@cqu.edu.cn；通讯作者：温彤（1968-），男，博士，教授，博士生导师；Email:wentong@cqu.edu.cn

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