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    METHOD FOR MANUFACTURING CYLINDRICAL BODY HAVING DIFFERENT DIAMETERS BY COLD FORGING
    1.
    发明申请
    METHOD FOR MANUFACTURING CYLINDRICAL BODY HAVING DIFFERENT DIAMETERS BY COLD FORGING 审中-公开

    公开(公告)号：US20180345347A1

    公开(公告)日：2018-12-06

    申请号：US15778329

    申请日：2016-10-12

    申请人： NGK SPARK PLUG CO., LTD.

    发明人： Satoru OCHIAI

    IPC分类号： B21D22/26

    CPC分类号： B21D22/26 ,  B21J5/06 ,  B21J5/10 ,  B21J13/02 ,  B21K21/08

    摘要： A multi-diameter tubular body is cold-forged by forming a large-diameter hole portion in a formed body having a preliminary hole through subjection of the preliminary hole to deep hole forming and by punching out the bottom surface of the large-diameter hole portion to thereby form a small-diameter hole portion. Since a punch having a central protrusion on its forward end surface is used, an internal flaw is generated by dead metal in the inner circumferential surface of a depression, formed by the protrusion, in the bottom surface of the large-diameter hole portion. An outside diameter of a protrusion of a deep hole forming punch is rendered smaller than an inside diameter of the small-diameter hole portion to be formed later by punching out the bottom surface of the large-diameter hole portion. As a result, the internal flaw is removed when the small-diameter hole portion is formed.

    Manufacturing method for bearing outer ring
    3.
    发明授权
    Manufacturing method for bearing outer ring 有权
    轴承外圈的制造方法

    公开(公告)号：US09056375B2

    公开(公告)日：2015-06-16

    申请号：US14151272

    申请日：2014-01-09

    申请人： NSK, Ltd.

    发明人： Kazuto Kobayashi ,  Hiroshi Koyama

    IPC分类号： B21D53/10 ,  B23P15/00 ,  B21J1/06 ,  F16C33/64 ,  F16C19/18 ,  B21J1/04 ,  B21K21/02 ,  B21K1/04

    CPC分类号： B23P15/003 ,  B21J1/00 ,  B21J1/04 ,  B21J1/06 ,  B21J5/025 ,  B21J5/10 ,  B21K1/04 ,  B21K21/02 ,  F16C19/184 ,  F16C33/64 ,  Y10T29/49636 ,  Y10T29/49643

    摘要： When the column-shaped raw material 10 is subjected to an upsetting process, a simultaneous forward-backward extrusion process, a punching process, a rolling process and a finishing process in order, to obtain an outer ring 3 that constitutes a back-to back double-row angular ball bearing 3, in the simultaneous forward-backward extrusion process, using a floating die 31 having a bottom plate section 35 with a circular convex section 34 and a punch 33 having a punch side convex section 37 provided on an distal end thereof, the section closer to the center in the radial direction of the first intermediate material 11a is compressed in the axial direction, causing the metal material of the first intermediate material 11a to move outward in the radial direction and move approximately uniformly in both extrusion (forward and backward) direction of the punch 33, whereby the middle metal material 29 having a high degree of cleanliness of the column-shaped raw material 10 is exposed over the entire portion that will become the double-row outer-ring raceways 2.

    摘要翻译： 当对柱状原料10进行镦锻处理，同时进行前后挤出处理，冲压加工，轧制处理和精加工时，为了得到构成背靠背的外圈3 双列角球轴承3在同时向前后退挤压工序中，使用具有圆形凸部34的底板部35的浮动模31和设置在前端的冲头侧凸部37的冲头33 第一中间材料11a的径向中心附近的部分沿轴向被压缩，导致第一中间材料11a的金属材料在径向方向上向外移动并且在两个挤出中大致均匀地移动 向前和向后）的方向，从而使柱状原料10具有高清洁度的中间金属材料29暴露在e 将成为双列外圈滚道的ntire部分2。

    ZONING CLOSED-DIE EXTRUDING DEVICE AND METHOD
    4.
    发明申请
    ZONING CLOSED-DIE EXTRUDING DEVICE AND METHOD 审中-公开
    区域封闭式挤出设备和方法

    公开(公告)号：US20120090375A1

    公开(公告)日：2012-04-19

    申请号：US13378873

    申请日：2010-06-17

    申请人： Yongnian Yan ,  Renji Zhang ,  Qingping Lu ,  Bojie Wu ,  Zhendong Chen ,  Yang Wang ,  Xiaosong Zhang

    发明人： Yongnian Yan ,  Renji Zhang ,  Qingping Lu ,  Bojie Wu ,  Zhendong Chen ,  Yang Wang ,  Xiaosong Zhang

    IPC分类号： B21J9/02 ,  B21J5/00

    CPC分类号： B21C23/20 ,  B21J5/008 ,  B21J5/10 ,  B21K21/02

    摘要： A zoning closed-die extruding device comprises a closed female die and a male die. which is disposed in a longitudinal direction and configured to be mated with a closed cavity of the closed female die to extrude a blank. The male die comprises an extruding shaft portion and a stamp-extruding head portion, which is connected with the extruding shaft portion and disposed below the extruding shaft portion. A cross-sectional area of the stamp-extruding head portion perpendicular to a longitudinal axis of the closed female die is smaller than that of the extruding shaft portion perpendicular to the longitudinal axis of the closed female die. The male die is configured to rotate about the longitudinal axis of the closed female die so that the blank is sequentially and zonally deformed by the stamp-extruding head portion inside the closed cavity of the closed female die.

    摘要翻译： 分区闭模挤出装置包括封闭的阴模和阳模。 其设置在纵向方向上并且构造成与封闭阴模的封闭空腔配合以挤压坯件。 阳模具包括挤压轴部分和压出挤压头部分，其与挤出轴部分连接并设置在挤出轴部分的下方。 垂直于封闭阴模的纵向轴线的印模挤出头部的横截面面积小于垂直于封闭阴模的纵向轴线的挤出轴部分的横截面面积。 阳模被配置为围绕闭合的阴模的纵向轴线旋转，使得坯料通过封闭的阴模的封闭腔内的压模挤压头部顺序地和分区变形。

    Method of producing seamless metal tube and punch for use therein
    5.
    发明授权
    Method of producing seamless metal tube and punch for use therein 有权
    生产用于其中的无缝金属管和冲头的方法

    公开(公告)号：US08037732B2

    公开(公告)日：2011-10-18

    申请号：US12748744

    申请日：2010-03-29

    申请人： Kazuhiro Shimoda ,  Tomio Yamakawa ,  Koji Muramatsu ,  Yuji Inoue

    发明人： Kazuhiro Shimoda ,  Tomio Yamakawa ,  Koji Muramatsu ,  Yuji Inoue

    IPC分类号： B21D3/00 ,  B21B19/08

    CPC分类号： B21B23/00 ,  B21B19/04 ,  B21J5/10

    摘要： A hole 30 is formed in the center of the rear end face 20 of a round billet 10. The hole 30 has a predetermined depth from the rear end face 20 and a plurality of grooves 31 are provided in the side surface thereof. Each groove 31 extends in the depth direction of the hole 30. Piercing and rolling of the round billet 10 having the hole 30 is performed using a piercing mill having a plug. During piercing and rolling, the bottom surface of the hole 30 is broken through by the plug and a protrusion which is to be the starting point of burrs is formed, and the protrusion is absorbed by the groove 31 as the plug advances. Consequently, formation of burrs at the rear end of a hollow shell after piercing-rolling thereof can be suppressed.

    摘要翻译： 在圆坯10的后端面20的中央形成有孔30.孔30具有从后端面20的预定深度，在其侧面设有多个槽31。 每个槽31在孔30的深度方向上延伸。具有孔30的圆坯10的穿孔和轧制使用具有塞子的穿孔机进行。 在穿刺和滚动期间，孔30的底表面被插塞断开，并且形成作为毛刺起点的突起，并且当插头前进时突起被凹槽31吸收。 因此，可以抑制在穿孔轧制之后在中空壳的后端形成毛刺。

    MANUFACTURING METHOD FOR BEARING OUTER RING
    7.
    发明申请
    MANUFACTURING METHOD FOR BEARING OUTER RING 有权
    用于承载外圈的制造方法

    公开(公告)号：US20100101091A1

    公开(公告)日：2010-04-29

    申请号：US12522311

    申请日：2008-01-16

    申请人： Kazuto Kobayashi ,  Hiroshi Koyama

    发明人： Kazuto Kobayashi ,  Hiroshi Koyama

    IPC分类号： F16C33/64 ,  B21H1/12 ,  B21K1/04 ,  B21D53/12

    CPC分类号： B23P15/003 ,  B21H1/12 ,  B21J1/00 ,  B21J1/04 ,  B21J5/02 ,  B21J5/10 ,  B21K1/04 ,  B21K21/02 ,  F16C19/184 ,  F16C33/62 ,  F16C33/64 ,  Y10T29/49636 ,  Y10T29/49643 ,  Y10T29/49689

    摘要： Provided is a manufacturing method of an outer ring (3) of a back-to-back arrangement double-row angular ball bearing from a raw material (10) comprising a upsetting (A to B), a backward extrusion process (C to D), a punching (D to E), a rolling (E to F) and a finishing, wherein an outer diameter of a first intermediate material (11a) produced by the upsetting is equal to or smaller than an inside diameter of an inner periphery large diameter portion (18) of the inner circumference of a die (13) used in the backward extrusion process and larger than an inside diameter of an inner periphery small portion (19) of the die (13), and in a condition with the first intermediate material (11a) sitting on the inner periphery inclined portion (20) of the die (13), the intermediate material (11a) is pushed toward a base of the die (13) by a punch (14), to thereby the middle metal material (29) with the highest cleanliness of the raw material (10) is exposed to the two outer ring raceways (2) of the outer ring (3).

    摘要翻译： 本发明提供从包括镦粗（A〜B），向后挤压工序（C〜D）的原料（10）的背靠背排列双列角球轴承的外圈（3）的制造方法 ），冲压（D〜E），轧制（E〜F）和精加工，其中通过镦锻制造的第一中间材料（11a）的外径等于或小于内周的内径 在向后挤压过程中使用的模具（13）的内周的大直径部分（18）大于模具（13）的内周小部分（19）的内径，并且在 第一中间材料（11a）位于模具（13）的内周倾斜部分（20）上，中间材料（11a）通过冲头（14）被推向模具（13）的基部，由此 原料（10）清洁度最高的中间金属材料（29）暴露于t的两个外圈滚道（2） 他外圈（3）。

    METHOD OF MAKING BUSHING WITH BLIND GROOVES USED AS OIL RESERVOIR FOR CHAIN
    8.
    发明申请
    METHOD OF MAKING BUSHING WITH BLIND GROOVES USED AS OIL RESERVOIR FOR CHAIN 审中-公开
    使用用作链条油页岩的盲孔的布置方法

    公开(公告)号：US20090064652A1

    公开(公告)日：2009-03-12

    申请号：US12187417

    申请日：2008-08-07

    申请人： Hirofumi Miki

    发明人： Hirofumi Miki

    IPC分类号： B21L9/00 ,  F16G15/00

    CPC分类号： B21J15/12 ,  B21C23/205 ,  B21J5/10 ,  B21K1/063 ,  B21K1/066 ,  B21K1/12 ,  F16C33/103 ,  F16G13/02

    摘要： A method of making a bushing 100 with blind grooves used as oil reservoirs for a chain, by which a number of blind grooves 112 for oil reservoirs are provided in an axial direction on an inner circumferential surface of a cylindrical steel member in forging processes comprises the steps of: fitting one end of a cylindrical steel member 106 to blind groove forming protrusions HP1 of a hollow die pin HP contained in a blind groove forming die D6, pressing the blind groove forming protrusions HP1 against an inner circumferential surface of the cylindrical steel member 106 while a diameter widening center pin EP inserted from the other end to the one end of the cylindrical steel member 106 is abutted and held on a front end inner circumferential portion HP3 of the hollow die pin HP and pushing a blind groove forming punch P6 into the blind groove forming die D6 while pressing the other end of the cylindrical steel member 106 and sliding an inner circumferential surface 111 of the cylindrical steel member 106 with respect to blind groove forming protrusions HP1.

    摘要翻译： 制造具有用作链条的油槽的盲槽的衬套100的方法，通过该衬套100，用于在锻造工艺中在圆柱形钢构件的内周面上沿轴向设置有用于储油器的多个盲槽112包括： 将圆柱形钢构件106的一端装配到盲孔成形模具D6中所含的中空模具销HP的盲槽形成突起HP1上，将盲槽形成突起HP1压靠在圆筒形钢构件的内周面上 106，而从另一端插入到圆筒形钢构件106的一端的直径扩大中心销EP被抵接并保持在中空模具销HP的前端内周部HP3上，并将盲槽形成冲头P6推入 盲槽成形模具D6，同时按压圆筒状钢构件106的另一端并滑动圆筒形的内周面111 铝构件106相对于盲槽形成突起HP1。