The shape of the end of window trim strip is complex, the dimension is about 1000mm×30mm, the thickness is about 1mm, and the cross section in the width direction is narrow, which is a complex variable curvature convex section. The uneven fillet radius defect appeared at the end of window trim strip in the flanging process severely influenced its surface quality. Through simulations and tests, it is found that when the die radius is reduced, the defect of uneven fillet of the window trim strip is improved to some extent, but it has not reached the ideal index. Based on this conclusion, a die with variable fillet radius is designed to solve this problem and raised its design procedure. This die can solve this defect by reasonably arranging the die fillet radius. The fillet radius of the die is smaller in the center and gradually increases from center to corner. The simulation and test results showed that this method remarkably reduces the difference and variance of the fillet radius in different cross-sections of window trim strip.
ZHAN Yang,ZHAO Yixi,ZHU Baohang
. The Solution of Uneven Fillet Radius Defect in the Flanging
Process of Window Trim Strip[J]. Journal of Shanghai Jiaotong University, 2019
, 53(4)
: 488
-496
.
DOI: 10.16183/j.cnki.jsjtu.2019.04.014
［1］LE PORT A, THUILLIER S, MANACH P Y, et al. Experimental study of surface defects on automotive doors during flanging and their numerical prediction［J］. EPJ Web of Conferences, 2010, 6: 15001.
［2］韩东风, 林建平, 陈水生, 等. 汽车覆盖件内凹圆弧翻边仿真与变形控制研究［J］.锻压技术, 2009, 34(6): 83-87.
HAN Dongfeng, LIN Jianping, CHEN Shuisheng, et al. Numerical simulation and deforming control of concave curvature flanging in automobile panels［J］. Forging & Stamping Technology, 2009, 34(6): 83-87.
［3］申伟, 赵新刚, 赵金升.翻边成形过程表面缺陷问题解决方案［J］.模具制造, 2016, 16(1): 8-11.
SHEN Wei, ZHAO Xingang, ZHAO Jinsheng. The solution process of the surface defects in flanging forming［J］. Die & Mould Manufacture, 2016, 16(1): 8-11.
［4］孙苗苗, 于志刚, 寇煜, 等.不锈钢件冲孔翻边开裂的解决方法［J］.热加工工艺, 2017, 46(11): 242-243.
SUN Miaomiao, YU Zhigang, KOU Yu, et al. Solution of stainless steel parts cracking in punching flanging［J］. Hot Working Technology, 2017, 46(11): 242-243.
［5］张凌云, 孟伟琪, 范作鹏.飞机凸翻边零件橡皮成形起皱控制方法研究［J］.塑性工程学报, 2017, 24(3): 25-30.
ZHANG Lingyun, MENG Weiqi, FAN Zuopeng. Control method for wrinkling in rubber forming of aircraft flange bending parts［J］. Journal of Plasticity Engineering, 2017, 24(3): 25-30.
［6］许天宇.翻边开裂问题的分析与对策［J］.汽车工艺与材料, 2015(6): 16-19.
XU Tianyu. Analysis and countermeasure of flange cracking［J］. Automobile Technology & Material, 2015(6): 16-19.
［7］谢晖, 卜宇峰, 程威, 等.面向产品设计的铝合金件翻边成形［J］.锻压技术, 2017, 42(6): 27-32.
XIE Hui, BU Yufeng, CHENG Wei, et al. Flanging of aluminum alloy part for product design［J］. For-ging & Stamping Technology, 2017, 42(6): 27-32.
［8］高朋.板料翻边成形极限数值模拟及实验研究［D］.济南: 山东大学, 2012.
GAO Peng. Numerical simulation and experimental research on sheet metal flanging limit［D］. Jinan: Shandong University, 2012.
［9］孙泽.曲线翻边零件形状畸变规律及其毛坯修正方法［D］.沈阳: 沈阳航空航天大学, 2014.
SUN Zeng. The shape distortion’s law and the method of correct the blank of curve flanging［D］. Shenyang: Shenyang Aerospace University, 2014.
