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选择压边力、板料初始尺寸、润滑条件作为试验参数对U形车身碰撞盒进行了冲压成形生产试验,测 取了三维空间各点的回弹值。结合试验结果,对影响回弹的因素进行了分析讨论。试验结果表明:回弹随着压边 力增大而减小;在一次成形中,试件弯曲的点数影响回弹角的大小。
Select the blank holder force, the initial size of the sheet, the lubrication conditions as the test parameters of the U-shaped body crash box for the production of stamping test, measured the point of the three-dimensional space rebound value. Combined with the test results, the factors affecting the springback were analyzed and discussed. The test results show that the rebound decreases with the increase of the blank holder force. In one forming, the number of bending points affects the rebound angle.