在科研和生产实践中,薄料的拉深成形是一个难题。拉深时,零件法兰和侧壁常常产生径向或纵向的皱纹,侧壁的底部经常被拉裂致使成形失败。起皱的原因是拉深时作用于法兰上的压边力不足,法兰和进入凹模口的材料处于失稳状态,在圆周方向的切向 In scientific research and production practice, thin material forming is a problem. Drawing, the parts flanges and sidewalls often produce radial or longitudinal wrinkles, the bottom of the sidewall is often cracked to cause failure to form. The reason of wrinkling is that the blank holder force acting on the flange is insufficient when the drawing is performed, the flange and the material entering the die opening are in a state of instability, the tangential direction in the circumferential direction