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    Nut forming apparatus
    4.
    发明授权
    Nut forming apparatus 失效
    螺母成型设备

    公开(公告)号：US4574609A

    公开(公告)日：1986-03-11

    申请号：US591801

    申请日：1984-03-21

    Applicant: Imre Berecz

    Inventor： Imre Berecz

    IPC: B21J9/06 ,  B21J13/08 ,  B21K1/68 ,  B21J7/16

    CPC classification number: B21J9/06 ,  B21J13/08 ,  B21K1/68

    Abstract: A nut forming apparatus in which a pair of identical die assemblies are housed in a pair of diametrically opposed boxes in a rotary block and rearward movement of the die assembly relative to the rotary block at a first die station is precluded but rearward movement of that die assembly is allowed as it is moved to a second die station by rotary movement of the rotary block. A fixed back pierce pin, associated with each die assembly, is thus inoperative in response to a front forming blow struck by a punch positioned at the first die station but operates to back pierce the nut blank upon rearward movement of the die assembly in response to a front forming blow struck by a punch positioned at the second die station. A pair of cammingly interfaced cylindrical members associated with each die undergo relative rotation as the die assembly is moved by rotation of the rotary block between the first and second die stations to respectively preclude and allow rearward movement at that die assembly.

    Abstract translation: 一种螺母形成装置，其中一对相同的模具组件容纳在旋转块中的一对直径相对的箱中，并且模具组件在第一模具站处相对于旋转块的向后运动被排除，但是该模具的向后运动 当通过旋转块的旋转运动将其移动到第二模具站时，允许组装。 因此，与每个模具组件相关联的固定的后穿刺销，因此响应于由位于第一模具座处的冲头撞击的前部成形吹塑而不起作用，但是响应于模具组件向后移动而在后面刺穿螺母毛坯 由位于第二模具台处的冲头撞击的前部成形吹塑。 当模具组件通过旋转块在第一和第二模具工位之间的旋转而移动时，与每个模具相关联的一对凸轮连接的圆柱形构件经历相对旋转，以分别排除并允许在该模具组件处向后移动。

    Method for the production of threaded nuts by cold forming
    5.
    发明授权
    Method for the production of threaded nuts by cold forming 失效
    通过冷成型生产螺母的方法

    公开(公告)号：US4299000A

    公开(公告)日：1981-11-10

    申请号：US68719

    申请日：1979-08-22

    Applicant: Friedrich-Karl Koch

    Inventor： Friedrich-Karl Koch

    IPC: B21K1/64 ,  B21D53/24 ,  B21K1/68

    CPC classification number: B21K1/64

    Abstract: A method for the preparation of hexagonal nuts by cold forming wherein a blank is shaped and formed to a hexagonal configuration wherein the distances across the flats of the hexagon are greater than in the finished nut, and thereafter the rough nut is forced into a shaping die and over a punch concentric therewith, whereby the punch forms the central opening in the nut and the shaping die reduces the distances across the flats of the hexagon to that of the final nut size.

    Abstract translation: 一种用于通过冷成型制备六角形螺母的方法，其中坯料被成形并形成为六边形形状，其中六边形平面之间的距离大于在精加工螺母中的距离，然后将粗螺母压入成型模具 并且与其同心的冲头，由此冲头在螺母中形成中心开口，并且成形模具将跨越六边形的平面的距离减小到最终螺母尺寸的距离。

    Methods for the cold extrusion of metallic elements with dead or through holes and plant for carrying out said methods
    7.
    发明授权
    Methods for the cold extrusion of metallic elements with dead or through holes and plant for carrying out said methods 失效
    用于实施所述方法的用于具有死洞或通孔的金属元件的冷挤压方法

    公开(公告)号：US07347075B2

    公开(公告)日：2008-03-25

    申请号：US10501104

    申请日：2003-02-26

    Applicant: Alessandro Vescovini

    Inventor： Alessandro Vescovini

    IPC: B21D53/24 ,  B21D43/05 ,  B21K1/68

    CPC classification number: B21J9/022 ,  B21K1/68 ,  B21K21/00 ,  B21K27/04

    Abstract: Cold extrusion procedures for obtaining metal elements such as for example bushings, nuts or other elements with dead or through holes, screws, standard and special shape extruded or pressed products, etc. on a machining center comprising a series of hydraulic presses connected to each other with an automatic movement system. The final drilling or shearing of the elements is advantageously carried out by a dedicated drilling or shearing unit, working at high speed, which can consist of a vertical mechanical press. The use of the plant comprising several hydraulic presses together with the rapid drilling or shearing unit makes it possible to achieve a high level of productivity.

    Abstract translation: 用于在加工中心上获得金属元件例如衬套，螺母或具有死孔或通孔的其他元件，螺钉，标准和特殊形状的挤出或压制产品等的冷挤压步骤，包括彼此连接的一系列液压机 具有自动移动系统。 元件的最终钻孔或剪切有利地通过专用的钻孔或剪切单元进行，其高速工作，其可以由垂直的机械压力机组成。 使用包括多个液压机的设备以及快速钻孔或剪切单元使得可以实现高水平的生产率。

    Method for forming hollow articles
    8.
    发明授权
    Method for forming hollow articles 失效
    成型中空制品的方法

    公开(公告)号：US5170655A

    公开(公告)日：1992-12-15

    申请号：US761636

    申请日：1991-09-18

    Applicant: Yuan-Ho Lee

    Inventor： Yuan-Ho Lee

    IPC: B21K1/68

    CPC classification number: B21K1/68

    Abstract: The method includes a step of compressing a portion of a cylindrical stock into a third section of a cavity of a die. The cavity of the die includes a first section having a polygonal internal surface, a second section being narrower than the first section and having a first circle in cross section with a diameter substantially equal to the diameter of the stock which is fed in the second section and a third section between the first and second section. The third section has a second circle in cross section with a diameter gradually decreasing from the first section towards the second section.

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