For wrinkles occurring in the central area of a stamped part with a complex shape, a workable range of blank-holder force does not even exist.
For wrinkles occurring in the central area of a stamped part with a complex shape, a workable range of blank-holder force does not even exist.
因为起皱在冲压零件的中心位置以一个复杂的形状形成，甚至不存在一个合适的压边力范围。