Transactions of Materials and Heat Treatment

Title：Influence of inclination angel for unilateral axis on forming precision of taper panel with small taper

Authors： Hu Deyou Li Jiguang Zhu Yarong Zhang Xialu Wang Wei Du Baihong Zhang Guowei Chen Fenghe

Unit： Tianjin Long March Launch Vehicle Manufacturing Co. Ltd. Capital Aerospace Machinery Co. Ltd.

KeyWords： small taper taper panel forming precision inclination angel clamping gap

ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(6):59-63

Abstract：

For the control of forming precision for 2219 aluminum alloy taper panel with small taper, the relationship between profile and inclination angel of unilateral axis for 2219 aluminum alloy taper panel with small taper was established by combining the structural characteristics of four-axis bending machine and product precision requirements to calculate the difference in height between two cylinders of unilateral axis theoretically, and the influence law on the forming precision of the taper panel with small taper was explored by studying the process parameters with different inclination angles of unilateral axis. The results show that the bending radiuses of the small end preferentially reaches due to the extrusion of the cone device when the difference in height between the two cylinders of the unilateral axis is large and they are under the same conditions, and when the difference in height between the two cylinders of the unilateral axis is reduced, the bending radii of the large and small ends are controlled by changing deformation trend and increasing the plastic deformation ratio of the large end. Thus, when the clamping gap between the upper and lower shafts is 20 mm, the distance of cylinder 1 is 250 mm and the distance of cylinder 2 is 300 mm, and the forming precision of taper panel with small taper is controlled within 1.5 mm to meet the requirements of radial gap and straightness.

Funds：

天津市科技支撑项目（17YFZCGX00530）

胡德友（1988-），男，硕士，工程师 E-mail：hudeyou1988@126.com

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