公开(公告)号：US07861412B2

公开(公告)日：2011-01-04

申请号：US11645032

申请日：2006-12-26

Applicant: Yoshihaya Imamura ,  Junichi Sato ,  Daigo Masumoto ,  Katsuhiro Motode

Inventor： Yoshihaya Imamura ,  Junichi Sato ,  Daigo Masumoto ,  Katsuhiro Motode

IPC: B21F43/00 ,  B23P13/04 ,  A61C5/02 ,  A61C3/08

CPC classification number: B21D53/30 ,  B21D19/12 ,  Y10T29/49375 ,  Y10T29/49524 ,  Y10T29/49531 ,  Y10T29/49803 ,  Y10T29/4994 ,  Y10T29/53083

Abstract: A method prevents a cylindrical body from buckling in externally curling edges of both side portions by pressing curling dies in an axial direction after molding the cylindrical body having a drop portion whose outer diameter is small and two side portions whose outer diameter is large by enlarging a cylindrical material made of aluminum alloy by electromagnetic molding. In curling the edges of the side portions, a buckling preventing die restrains an outer periphery of the drop portion of the cylindrical body. Because the buckling preventing die receives the axial compression force of the curling dies, it can prevent the cylindrical body from buckling and deforming. The buckling preventing die is what a split die disposed on the side of an outer periphery of the cylindrical material in the electromagnetic molding is used as.

Abstract translation: 一种方法是通过在将具有外径较小的液滴部分的圆筒体和外径较大的两个侧面部分扩大后，通过在轴向方向上压制卷曲模具来防止圆柱体在两侧部的外部卷曲边缘处弯曲 由铝合金制成的圆柱形材料通过电磁成型。 在卷曲边缘部分的边缘处，弯曲防止模具限制了圆柱体的液滴部分的外周。 由于防翘曲模具受到卷边模具的轴向压缩力，因此可以防止圆柱体发生弯曲变形。 抗弯曲模具是使用设置在电磁成型体中的圆筒状材料的外周侧的分割模具。

公开(公告)号：US20070143988A1

公开(公告)日：2007-06-28

申请号：US11645032

申请日：2006-12-26

Applicant: Yoshihaya Imamura ,  Junichi Sato ,  Daigo Masumoto ,  Katsuhiro Motode

Inventor： Yoshihaya Imamura ,  Junichi Sato ,  Daigo Masumoto ,  Katsuhiro Motode

IPC: B23P21/00 ,  B23Q15/00

CPC classification number: B21D53/30 ,  B21D19/12 ,  Y10T29/49375 ,  Y10T29/49524 ,  Y10T29/49531 ,  Y10T29/49803 ,  Y10T29/4994 ,  Y10T29/53083

Abstract: There is provided a method for preventing a cylindrical body from buckling in externally curling edges of both side portions by pressing by curling dies in an axial direction after molding the cylindrical body having a drop portion whose outer diameter is small and the both side portions whose outer diameter is large by enlarging a cylindrical material made of aluminum alloy by electromagnetic molding. In curling the edges of the both side portions, a buckling preventing die restrains an outer periphery of the drop portion of the cylindrical body. Because the buckling preventing die receives the axial compression force of the curling dies, it can prevent the cylindrical body from buckling and deforming. The buckling preventing die is what a split die disposed on the side of an outer periphery of the cylindrical material in the electromagnetic molding is used as it is.

Abstract translation: 提供了一种方法，用于通过在具有外径小的液滴部分的圆筒体成形后，通过在轴向上的卷曲模具进行加压来防止圆柱体在两侧部的外侧卷曲边缘的弯曲， 通过电磁成型扩大由铝合金制成的圆柱形材料，直径很大。 在卷曲两侧部分的边缘的过程中，弯曲防止模具限制了圆柱体的液滴部分的外周。 由于防翘曲模具受到卷边模具的轴向压缩力，因此可以防止圆柱体发生弯曲变形。 抗弯曲模具是直接使用设置在电磁模制中的圆筒形材料的外周侧的分割模具。