公开(公告)号：US3682122A

公开(公告)日：1972-08-08

申请号：US3682122D

申请日：1970-09-28

Applicant: ALUMINUM CO OF AMERICA

Inventor： HADDON ROGER C ,  KILGORE COLIN H

IPC: B21D19/08 ,  B21D53/04 ,  B21D53/02

CPC classification number: B21D19/08 ,  B21D53/04

Abstract: Conjoint flanging, ironing and pinch-trimming fabrication of integral collars from metal sheet material, e.g. relatively thin work hardened aluminum alloy sheet material, having an aperture overlying a female die assembly of a coaxially arranged flanging and ironing die section and pinch-trim die section, said pinchtrim die section being disposed in predetermined spaced relation with said flanging and ironing die section and having a transverse shoulder contiguously connecting said die sections at the juncture therebetween, the axial position of the shoulder defining the height of the collar to be fabricated, by moving a selectively shaped male plunger having an enlarged sheet engaging portion through said sheet aperture and into operative relation with said female die sections to gradually and incrementally flange and iron the portions of said sheet material disposed about said aperture therein to form an extending collar of reduced wall thickness, and to sequentially force the deformed sheet material at said juncture against said shoulder to pinchtrim excess portions of the flanged and ironed sheet material to provide such reduced wall thickness collar with a uniform height and a well-defined collar edge.

Abstract translation: 金属板材的整体凸缘的连接折边，熨烫和夹紧修整，例如。 相对薄的加工硬化的铝合金板材，具有覆盖同轴布置的凸缘和熨烫模具部分和夹紧模具部分的阴模组件的孔，所述夹紧模具部分以与所述折边和熨烫的预定间隔关系设置 并且具有在它们之间的接合处连接所述模具部分的横向肩部，所述肩部的轴向位置通过移动具有扩大的片材接合部分的选择性形状的公柱来限定要制造的套环的高度， 并且与所述阴模部分成操作关系，逐渐地并递增地将设置在其周围的所述孔的所述片材的部分凸缘和熨烫，以形成壁厚减小的延伸套环，并且在所述接合处依次将所述变形的片材抵抗所述 肩部夹紧法兰和iro的多余部分 以提供具有均匀高度和良好限定的轴环边缘的这种减小的壁厚套环。