Extrusion die for forming hollow material
    6.
    发明授权
    Extrusion die for forming hollow material 有权
    用于形成中空材料的挤出模具

    公开(公告)号:US09162267B2

    公开(公告)日:2015-10-20

    申请号:US14344484

    申请日:2012-08-02

    IPC分类号: B21C25/02 B21C23/08 B21C25/00

    摘要: An extrusion die is provided with a male die through which a billet is extruded from an upstream side to a downstream side and, the male die adapted for forming an inside shape of a hollow material; and a female die for holding the male die and forming an outside shape of the hollow material. The male die is formed of a spider and a holder for holding the spider. The spider is formed of a mandrel and a plurality of bridge parts for supporting the mandrel, and enabling a distal-end outer peripheral surface to engage with a bridge-holding surface. The distal-end outer peripheral surface of each of the bridge parts and the bridge-holding surface of the holder are joined by shrink-fitting.

    摘要翻译: 挤出模具设置有阳模,坯料从上游侧向下游侧挤出,阳模用于形成中空材料的内部形状; 以及用于保持阳模并形成中空材料的外形的阴模。 雄模由蜘蛛和用于夹持蜘蛛的支架形成。 蜘蛛由心轴和多个用于支撑心轴的桥接部分形成,并且能够使远端外周面与桥接部保持面接合。 通过收缩配合将桥接部的每一个的前端外周面和保持架的桥保持面接合。