【摘要】 空调换热器翅片在冲压成形时因其料薄易造成起皱和破裂等问题，运用Dynaform对其冲压成形的多道次拉深工序进行仿真模拟，重现了铝箔在拉深中出现的缺陷。采用正交试验的方法，研究了冲压速度、摩擦因数、模具间隙及压边力对翅片拉深成形中最大减薄率的影响，选出最优参数组合。研究结果表明：将翅片第5道次拉深凸模圆角半径从0.8 mm增大至1.0 mm,使最大减薄率从31.867%减至24.718%,正交试验模拟可知：最优解为冲压速度1 000 mm/s、压边力1 000 N、第1至第4道次凸凹模间隙0.4 mm、第5道次凸凹模间隙0.35、摩擦因数0.1,并将其模拟结果与实际铝箔拉深进行对比，验证了模拟的正确性。更多还原

【Abstract】 Because of the thin material of the air-conditioning heat exchanger fins, it is easy to cause wrinkles and cracks during stamping and forming. Dynaform was used to simulate the multi-pass drawing process of stamping and forming, which reproduced the appearance of defects on aluminum foil in deep drawing. The orthogonal test method was used to study the influence of punching speed, friction coefficient, die gap and blank holder force on the maximum thinning rate of fin deep drawing, and the optimal parameter combination was selected. The research results show that increasing the fillet radius of the fifth-pass drawing punch of the fin from 0.8 mm to 1.0 mm reduces the maximum thinning rate from 31.867% to 24.718%. The orthogonal test simulation shows that the optimal parameters are as follows: solution punching speed is 1 000 mm/s, the blank holder force is 1 000 N, the die gap from the first to fouth pass punch is 0.4 mm, the die gap at the fifth pass punch is 0.35, and the friction coefficient is 0.1. The simulation results are compared with the actual aluminum foil deep drawing to verify the correction of the simulation.更多还原