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    Device for drawing tubular workpiece
    2.
    发明授权
    Device for drawing tubular workpiece 有权

    公开(公告)号：US09636727B2

    公开(公告)日：2017-05-02

    申请号：US13059681

    申请日：2009-08-20

    Applicant: Koji Hisayuki ,  Shigeru Aoya ,  Masaaki Oide

    Inventor： Koji Hisayuki ,  Shigeru Aoya ,  Masaaki Oide

    IPC: B21C1/24 ,  B21C9/00 ,  B21C3/16 ,  B21C3/04

    CPC classification number: B21C1/24 ,  B21C3/04 ,  B21C3/16 ,  B21C9/005

    Abstract: A device 10 for drawing a tubular workpiece is provided with a drawing die 20 and a drawing plug 30. The drawing die 20 includes a first curved surface section 1C from which the workpiece 40 is detached while being reduced in diameter, a die bearing section 2B arranged radially inward of and downstream of a workpiece separation point K of the first curved surface section 1C, and a guide section 2D having a second curved surface section 2C which smoothly continues to an upstream end of the die bearing section 2B and configured to again come into contact with the workpiece 40 detached from the first curved bearing section 1C to guide the workpiece to the die bearing section 2B while reducing a diameter of the workpiece 40. The drawing plug 30 has a plug bearing section 3B shorter than a length L4 of the die bearing section 2B. The plug bearing section 3B is arranged at a position corresponding to the die bearing section 2B.

    Method for producing ultra thin wall metallic tube with cold working process
    6.
    发明申请
    Method for producing ultra thin wall metallic tube with cold working process 有权
    冷加工工艺制造超薄壁金属管的方法

    公开(公告)号：US20090038360A1

    公开(公告)日：2009-02-12

    申请号：US12285253

    申请日：2008-10-01

    Applicant: Chihiro Hayashi

    Inventor： Chihiro Hayashi

    IPC: B21B17/10

    CPC classification number: B21C1/24 ,  B21B21/005 ,  B21B25/00 ,  B21C1/26 ,  B21C3/04 ,  B21C3/08

    Abstract: An exemplary embodiment of the invention provides a method for producing an ultra thin wall metallic tube by cold working method with significant wall thickness reduction. In a method for producing the metallic tube with a cold pilger mill according to the invention, cold rolling is performed while tube diameters are being expanded using rolls having tapered groove dies whose calibers increase from an engaging entry side toward a finishing exit side. In a method for producing the metallic tube with a drawing machine according to the invention, cold drawing is performed while the tube diameters are being expanded using a solid die whose calibers increase from an engaging entry side toward a finishing exit side and a plug of a tapered mandrel bar whose diameters increase from an entry side of the die toward an exit side. In the metallic tube producing method, a maximum diameter of the plug or tapered mandrel bar may be larger than an outside diameter of the mother tube.

    Abstract translation: 本发明的一个示例性实施例提供了一种通过冷加工方法制造超薄壁金属管的方法，其具有显着的壁厚减小。 在根据本发明的用于制造具有冷冲切机的金属管的方法中，使用具有锥形槽模的辊，使其卷边从接合入口侧朝向精加工出口侧增大，进行冷却。 在根据本发明的具有拉丝机的金属管的制造方法中，在使用从接合入口侧朝向精加工出口侧增加口径的固体模具扩大管直径的同时进行冷拉拔， 锥形芯棒的直径从模具的入口侧朝向出口侧增加。 在金属管制造方法中，塞子或锥形芯棒的最大直径可以大于母管的外径。

    Process for metal wire drawing and a tool for actuating the process
    7.
    发明授权
    Process for metal wire drawing and a tool for actuating the process 失效
    金属拉丝工艺和一个致动过程的工具

    公开(公告)号：US06449997B1

    公开(公告)日：2002-09-17

    申请号：US09744573

    申请日：2001-01-26

    Applicant: Pietro Bertolini

    Inventor： Pietro Bertolini

    IPC: B21C304

    CPC classification number: B21C3/04 ,  B21C1/04

    Abstract: In an improved process for drawing metal wires and a tool for actuating the process, a metal wire is coated with a thin surface layer of lubricant and subsequently drawn, gradually in a series of single drawing operations. In a final of the drawing operations, the wire is forced to pass through a hole which exhibits an angle of convergence comprised between 30 degrees and about 85 degrees. As the wire passes through the hole, the layer of lubricant is removed and the drawn wire exiting from the hole is clean and lubricant-free.

    Abstract translation: 在用于绘制金属丝的改进方法和用于致动该过程的工具中，金属丝被涂覆有薄的润滑剂表面层，并且随后在一系列单次拉伸操作中逐渐拉伸。 在最后的绘图操作中，线被迫穿过呈现包含在30度和约85度之间的收敛角的孔。 当电线穿过孔时，去除润滑剂层，从孔中排出的拉丝线是清洁和无润滑的。

    Omega type ornamental chain and process for making the chain
    8.
    发明申请
    Omega type ornamental chain and process for making the chain 失效
    欧米茄型观赏链和制作链的过程

    公开(公告)号：US20020038556A1

    公开(公告)日：2002-04-04

    申请号：US09988904

    申请日：2001-11-19

    Inventor： Pietro Rancan

    IPC: A44C005/00

    CPC classification number: A44C27/006 ,  A44C5/022 ,  A44C15/0025 ,  B21C3/04 ,  B21C37/08 ,  B21C37/0811 ,  B21L11/005

    Abstract: There is provided an ornamental chain of the nullOmeganull type used for the production of necklaces, bracelets and other articles of jewelry. This chain has two faces having different colors and/or different workmanship corresponding to the two faces. The chain may be worn showing one or the other face. The disclosure also covers the process of production of the chain.

    Abstract translation: 提供了用于生产项链，手镯和其他珠宝首饰的“欧米茄”类型的观赏链。 该链条具有两个不同颜色和/或对应于两个面部的不同工艺的面。 该链可能穿着显示一个或另一个面。 本公开还涵盖链的生产过程。

    Wire drawing die with non-cylindrical interface configuration for reducing stresses
    9.
    发明授权
    Wire drawing die with non-cylindrical interface configuration for reducing stresses 失效
    拉丝模具具有非圆柱形接口配置，用于减少应力

    公开(公告)号：US5957005A

    公开(公告)日：1999-09-28

    申请号：US950004

    申请日：1997-10-14

    Applicant: Erik O. Einset ,  David M. Johnson

    Inventor： Erik O. Einset ,  David M. Johnson

    IPC: B25H7/04 ,  B21C3/02 ,  B21C3/04 ,  B23P15/24

    CPC classification number: B21C3/04 ,  B21C3/025

    Abstract: The present invention is addressed to improving a blank for a wire drawing die formed from an annular cemented metal carbide support component having a lengthwise extent from an entrance end to an exit end and extending radially about a central longitudinal axis to define a cylindrical internal bore through the lengthwise extent, and a cylindrical sintered polycrystalline compact component received within the bore of the support component and bonded thereto at an interface surface extending a radial distance from and along the longitudinal axis from a wire drawing entrance end to a wire drawing exit end. The compact component is adapted to receive an aperture extending through its lengthwise extent about the central longitudinal axis and is configured with an entrance zone at the die entrance end which tapers inwardly therefrom to a reduction zone whereat a wire to be drawn through the aperture makes initial contact with the compact component, and thence to a bearing zone and an exit zone. The improvement in such wire drawing die blank revolves the radial distance from said central longitudinal axis to said interface surface tapers inwardly from the entrance end to a minimum prior to the bearing zone after which said radial distance remains substantially constant to said exit end. The corresponding wire drawing die and the method for producing the inventive wire drawing blank also form additional aspects of the present invention.

    Abstract translation: 本发明涉及改进用于由环形胶合金属碳化物支撑部件形成的拉丝模具的坯料，其具有从入口端到出口端的纵向延伸并且围绕中心纵向轴线径向延伸以限定圆柱形内孔 纵向延伸的圆柱形烧结多晶压块组件，以及容纳在支撑部件的孔内并且在从拉丝入口端延伸到拉丝出口端的沿着纵向轴线的径向距离延伸的界面处的圆柱形烧结多晶压块部件。 紧凑型部件适于接收围绕中心纵向轴线延伸通过其纵向范围的孔，并且在入口端处构造有入口区域，其从其中向内逐渐变细到还原区域，通过该孔口将待拉出的线材初始化 与紧凑型部件接触，然后与轴承区域和出口区域接触。 这种拉丝模具坯料的改进使得从所述中心纵向轴线到所述界面表面的径向距离在轴承区域之前从进口端向内逐渐减小到最小值，之后所述径向距离保持基本上恒定于所述出口端。 相应的拉丝模和用于制造本发明的拉丝坯的方法也形成本发明的另外的方面。

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