公开(公告)号：US20050039314A1

公开(公告)日：2005-02-24

申请号：US10644811

申请日：2003-08-21

申请人： Robert Dickie ,  Bruce Giletman

发明人： Robert Dickie ,  Bruce Giletman

IPC分类号： B21D51/38 ,  B23P17/00

CPC分类号： B21D51/383 ,  Y10T29/49789 ,  Y10T29/49799

摘要： Disclosed herein is a method of making a stamped workpiece from a base material sheet. The base material sheet has a thickness and defines a first plane. The stamped workpiece, upon completion of the process, has a protrusion and a crease line substantially adjacent thereto. The crease line divides the stamped workpiece into a first section and a second section. The method comprises a number of steps. One step in this method is the provision of at least one protrusion in the base material sheet. A workpiece periphery is defined in the base material sheet, the periphery bounding an area of the base material sheet. The area has a first section and a second section. The workpiece periphery adjacent to the first section is substantially separated from the remainder of the base material sheet. The first section is bent away from the first plane along a crease line. The thickness of the base material sheet along the crease line is then substantially reduced. The workpiece is detached from the base material sheet along the workpiece periphery. Optionally, the workpiece may be a tab opener for a food or beverage can.

摘要翻译： 本文公开了一种从基材片制造冲压工件的方法。 基材片具有厚度并限定第一平面。 冲压工件在工艺完成时具有与其基本相邻的突起和折痕线。 折痕线将被冲压的工件分成第一部分和第二部分。 该方法包括多个步骤。 该方法的一个步骤是在基材片中设置至少一个突起。 工件周边被限定在基材片中，边界限定在基材片的一个区域上。 该区域具有第一部分和第二部分。 与第一部分相邻的工件周边基本上与基材片的其余部分分离。 第一部分沿着折痕线从第一个平面弯曲。 然后，沿着折痕线的基材片的厚度大大减小。 工件沿着工件周边与基材片分离。 可选地，工件可以是用于食品或饮料罐的拉片开口器。