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1. 发明授权

US06484613B1 Electromagnetic bounce back braking for punch press and punch press process 失效
标题翻译：用于冲压和冲压加工的电磁反弹制动
公开(公告)号：US06484613B1
公开(公告)日：2002-11-26
申请号：US08440387
申请日：1995-05-12
申请人： Ho Chong Lee , Ganesh Subbarayan , Paul Gerard Wilkin
发明人： Ho Chong Lee , Ganesh Subbarayan , Paul Gerard Wilkin
IPC分类号： B26D508
CPC分类号： B26D5/086 , B26D5/08 , H05K3/005 , H05K2203/104 , Y10T83/04 , Y10T83/8694 , Y10T83/8765 , Y10T83/8785
摘要： A method of punching a via or through hole in a polymer-metal laminate workpiece in a punch press. The punch press has a punch tool, a driver coil for driving the punch tool through the polymer-metal laminate workpiece, and a stopper for stopping the punch travel of the punch tool and mechanically returning the punch tool to its starting position. The method includes the steps of applying an electrical current pulse through the driver coil to electromagnetically drive the punch downward to and through the workpiece, and then elastically colliding the punch tool with the stopper to stop and return the punch tool on an upward return stroke. Subsequently a second, braking pulse is applied through the driver coil to electromagnetically brake the punch. The second electrical current is applied after the start of the punching pulse, for a time and magnitude sufficient to brake the punch press.
摘要翻译：在冲压机中冲压聚合物 - 金属层压体工件中的通孔或通孔的方法。冲压机具有冲压工具，用于通过聚合物 - 金属层压体工件驱动冲压工具的驱动线圈和用于阻止冲头工具的冲头移动并机械地使冲压工具返回到其起始位置的止动器。该方法包括以下步骤：通过驱动器线圈施加电流脉冲以将冲头向下电动地驱动并穿过工件，然后使冲头工具与止动件弹性碰撞，以在向上的回程行程上停止并返回冲压工具。随后，通过驱动线圈施加第二制动脉冲以电磁制动冲头。在冲压脉冲开始之后施加第二电流足够的时间和量级来制动冲压机。

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