公开(公告)号：US20070204668A1

公开(公告)日：2007-09-06

申请号：US11686705

申请日：2007-03-15

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: B21C37/30

CPC classification number: B21K1/767 ,  B21K1/768

Abstract: A preparatory working device by which a work piece to be fed to a rack bar forging device is obtained. The device is provided with a die sets for obtaining a diameter reduction at a location of a blank pipe, which becomes a toothed part of a rack bar, while the wall thickness being substantially unchanged or slightly increased. The device is further provided with a die set for reducing a wall thickness at a location of the blank pipe, which becomes a connection part of the rack bar. The wall thickness reduction is one half of the initial thickness, which causes the length of the work piece to be elongated. Then a rack bar forging by a die set is done.

Abstract translation: 获得供给到齿条锻造装置的工件的准备工作装置。 该装置设置有模具组，用于在空管的位置获得直径减小，该空管成为齿条的齿形部分，而壁厚度基本上不变或略微增加。 该装置还设置有用于减小空管的位置处的壁厚的模具组，该坯管成为齿条的连接部分。 壁厚减小是初始厚度的一半，这导致工件的长度被拉长。 然后完成由模具组锻造的齿条棒。

公开(公告)号：US3303774A

公开(公告)日：1967-02-14

申请号：US45585965

申请日：1965-05-14

Applicant: SEIJI SHIOKAWA

Inventor： SEIJI SHIOKAWA

IPC: B30B15/04

CPC classification number: B30B15/044

公开(公告)号：US4080872A

公开(公告)日：1978-03-28

申请号：US735014

申请日：1976-10-22

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: F15B11/08 ,  F15B13/042

CPC classification number: F15B11/08 ,  F15B2211/30505 ,  F15B2211/3058 ,  F15B2211/75 ,  F15B2211/775 ,  Y10T137/87169

Abstract: A boost valve device is described which comprises a valve body formed therein with three check valves and hydraulic circuit including the check valves, which circuit functions to recirculate oil discharged from one side of a cylinder during no load operation to the other side of the cylinder to thereby boost the operation velocity of the cylinder under no load operation and to return the discharge oil to an oil tank during load operation. The valve body has an upper surface provided with ports corresponding to ports of a directional control valve and a lower surface provided with ports corresponding to ports of a manifold and is sandwiched between the directional control valve and the manifold with the ports in alignment.

Abstract translation: 描述了一种升压阀装置，其包括形成有三个止回阀的阀体和包括止回阀的液压回路，该回路用于在无负载操作期间将从缸的一侧排出的油再循环到气缸的另一侧， 从而在无负载运行时提高气缸的运行速度，并在加载运转时将排放油返回到油箱。 阀体具有设置有与方向控制阀的端口对应的端口的上表面和设置有对应于歧管端口的端口的下表面，并且夹持在方向控制阀和歧管之间，端口对准。

公开(公告)号：US4018150A

公开(公告)日：1977-04-19

申请号：US585803

申请日：1975-06-11

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: B30B15/04 ,  B30B1/32

CPC classification number: B30B15/044

Abstract: In a press which comprises an upper frame provided at the forward end thereof with a main cylinder, a lower frame opposed to said upper frame across a vertical spacing and a shank frame attached integrally to the ends of said upper and lower frames so as to provide support therefor and which is adapted to produce pressure for required fabrication by hydraulically actuating said main cylinder, an auxiliary cylinder is incorporated parallel to the main cylinder of the upper frame between the main cylinder and the shank frame and the forward end of the piston of said auxiliary cylinder is fastened onto the lower frame by the medium of a tension bar. The hydraulic actuating fluid is delivered to the auxiliary cylinder through a flow path which branches off from the flow path of said hydraulic fluid to the main cylinder, and the direction in which said fluid is delivered to the auxiliary cylinder is opposite that in which the fluid flows to the main cylinder. When the hydraulic actuating fluid is delivered to the main cylinder to produce pressure for required fabrication, the fluid is simultaneously delivered to the auxiliary cylinder to push up the auxiliary cylinder. This elevation of the auxiliary cylinder serves the purpose of producing a corrective action to minimize possible deflection, i.e. divergence of the forward ends of the upper and lower frames caused by the pressing force generated at the anvil, making it possible to enhance the precision with which desired fabrication by pressing is accomplished.

Abstract translation: 在包括在其前端设置有主缸的上框架的压机中，与所述上框架相对的垂直间隔相对的下框架和与所述上框架和下框架的端部整体连接的柄框架，以便提供 支撑件，适于通过液压致动所述主缸来产生用于所需制造的压力，辅助气缸平行于主框架和主框架之间的上框架的主缸并与所述主缸体的活塞的前端并入 辅助气缸通过张力杆的介质固定在下架上。 液压致动流体通过从所述液压流体的流动路径分支到主气缸的流动路径被输送到辅助气缸，并且所述流体被输送到辅助气缸的方向与流体 流到主缸。 当液压致动流体被输送到主气缸以产生所需制造的压力时，流体被同时传送到辅助气缸以推动辅助气缸。 辅助气缸的该高度用于产生校正作用以最小化可能的偏转，即由在砧座处产生的按压力引起的上下框架的前端的发散，使得可以提高精度， 完成了所需的按压制造。

公开(公告)号：US4016742A

公开(公告)日：1977-04-12

申请号：US613310

申请日：1975-09-15

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: B21D5/02 ,  B30B15/00

CPC classification number: B21D5/0272 ,  B30B15/007

Abstract: In a press for forming a long and narrow plate or strip of metal or synthetic resin into an elongated beam having an L-shaped section, of the type having a lower fixed frame provided with a female die on the top thereof and a hydraulically operated upper movable frame provided with a male die on the bottom thereof, a long space adjacent and parallel to the lower surface of the movable frame is provided in the movable frame. In the space are provided a plurality of small hydraulic deflection cylinders with pressure-fluid paths connected to the pressure-fluid paths of the main hydraulic cylinders to drive the movable frame. The space provided with a plurality of the small hydraulic deflection cylinders is so located that the center portion of the lower part of the movable frame is deflected counter to the deflection of the movable frame under press-forming load. When hydraulic pressure fluid is supplied to the main hydraulic cylinders to drive the movable frame for forming the plate by means of the dies fitted on the frames, the pressure fluid is also supplied to the plurality of the small hydraulic deflection cylinders in the space of the movable frame and the primary deflection of the frames under load is compensated for, so that a beam of L-shaped section free from convex or concave warp at its center portion is produced.

Abstract translation: 在用于将长而窄的金属或合成树脂板或条带形成为具有L形截面的细长梁的压力机中，该压力机具有在其顶部设置有阴模的下固定框架和液压操作的上部 可移动框架在其底部设置有阳模，在可移动框架中设置有与活动框架的下表面相邻并平行的长空间。 在空间中设置有多个小液压偏转缸，其具有连接到主液压缸的压力 - 流体路径的压力 - 流体路径，以驱动可移动框架。 设置有多个小液压偏转缸的空间被定位成使得可移动框架的下部的中心部分在压制成形负载下与可动框架的偏转相反地偏转。 当液压流体被供应到主液压缸以通过安装在框架上的模具驱动用于形成板的可移动框架时，压力流体也被供应到多个小液压偏转缸中 可移动框架和负载下的框架的主要偏移被补偿，从而产生在其中心部分处没有凸起或凹陷经线的L形部分的梁。

公开(公告)号：US06575009B2

公开(公告)日：2003-06-10

申请号：US09765610

申请日：2001-01-22

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: B21D3908

CPC classification number: B62D3/126 ,  B21K1/767 ,  B21K1/768 ,  Y10T29/49474

Abstract: A method for producing a rack bar for a steering mechanism in an automobile. A blank pipe is held in a die, which has, at its inner surface, linear tooted portions. Mandrels are inserted repeatedly to the blank pipe while the direction of the insertion is alternately changed, while the insertion of the mandrel on one side of the blank pipe and the withdrawal of the mandrel on the other side are overlapped. Furthermore, lubrication is controlled so that an increased temperature of the work around 200° C. as generated under the plastic deformation of the metal is kept. An increased efficiency as well as reduced cost are obtained.

公开(公告)号：US07171838B2

公开(公告)日：2007-02-06

申请号：US10848068

申请日：2004-05-19

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: B21D7/04 ,  B21D28/24

CPC classification number: B21K21/10 ,  B21D22/02 ,  B21D35/001 ,  B21K23/04

Abstract: Method and apparatus for producing a thin walled tubular product with thickened flange. A first stage metalworking (drawing) of a circular plate material A is done by using a first die set 22 having a conical die 24 and a drawing punch 26 is done in a manner that the end of the blank plate is remained on the conical surface 24-1 of the die, so that a semi-finished tubular product A1 with a inclined flange A1-1 is obtained. Then, a second stage metalworking (drawing) of the semi-finished tubular product A1 is done by a second die set 32 having a shaping punch 34 and a restraint die 36. The semi-finished tubular product A1 is held by the restraint die 36 and the shaping punch 34 is introduced into the semi-finished tubular product A1 for effecting a wall thickness reduction under ironing principle while forming a stepped portion. Simultaneous with the execution of the second stage drawing, a flattening of the flange is done while restriction diameter expansion by a wall 40, thereby obtaining a thickened flattened flange A2-3.

Abstract translation: 用于生产具有加厚凸缘的薄壁管状产品的方法和设备。 通过使用具有圆锥形模具24的第一模具组22进行圆板材料A的第一阶段金属加工（图示），并且拉伸冲头26以使得坯料板的端部保留在圆锥形表面上的方式进行 24-1，从而获得具有倾斜凸缘A1-1的半成品管状产品A 1。 然后，通过具有成形冲头34和限制模具36的第二模具组32完成半成品管状产品A1的第二阶段金属加工（图）。 半成品管状产品A 1由约束模具36保持，并且成形冲头34被引入半成品管状产品A 1中，以在形成阶梯部分的同时实现熨烫原理下的壁厚减小。 与第二阶段图的执行同时，通过壁40进行限制直径膨胀，从而获得增厚的扁平凸缘A 2-3，进行凸缘的扁平化。

公开(公告)号：US5988590A

公开(公告)日：1999-11-23

申请号：US690751

申请日：1996-08-01

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: F16K5/06 ,  B21D51/16 ,  F16K27/06

CPC classification number: F16K27/067

Abstract: A method of manufacturing a ball valve element includes a recess forming step in which a press die is used to form two stem recesses in an outer peripheral surface of pipe material cut to a prescribed size, the stem recesses being formed at positions that are symmetrical with respect to the center axis of the pipe material, and a ball-shaped element forming step in which the pipe material in which the stem recesses have been formed is placed in a split die having substantially spherical forming surfaces, with the openings in the pipe material facing the spherical forming surfaces of the split die, and pressure is exerted by the split die to uniformly and symmetrically deform the pipe material into a sphere.

Abstract translation: 制造球阀元件的方法包括凹槽形成步骤，其中使用压模在切割成规定尺寸的管材的外周面中形成两个杆凹部，所述杆凹部形成在与 相对于管材的中心轴线的球形元件形成步骤，其中已经形成有柄凹部的管材放置在具有大致球形的成形表面的分割模具中，管材中的开口 面对分割模具的球形成形表面，并且分裂模具施加压力以使管材均匀且对称地变形为球体。

公开(公告)号：US07168284B2

公开(公告)日：2007-01-30

申请号：US11235137

申请日：2005-09-27

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: B21D39/08

CPC classification number: B21D53/24 ,  B21D17/02 ,  B21K1/767 ,  Y10T29/49474

Abstract: A system for forging a rack bar from a blank pipe. A blank pipe 1 is held between dies 2 and 3. Stockers 7L and 7R are arranged on respective sides of the die set. In the stockers 7L and 7R, left-handed shuttles 6L1, 6L2, 6L3, . . . 6Ln and right-handed shuttles 6R1, 6R2, 6R3 . . . 6Rn are stored. First, a left-handed presser rod 5L inserts the shuttles 6L1 to the blank pipe from the left-handed stocker 7L. Then, a right-handed presser rod 5R inserts the shuttles 6R1 to the blank pipe from the right-handed stocker 7R, causing the shuttles 6L1 to be entrained and returned to the left-handed stocker 7L. Vertical shift movement is alternately executed between the left-handed and right-handed stockers 7L and 7R, so that a shuttle of step-likely increased working height is selected for executing a working process.

Abstract translation: 用于从空白管锻造齿条的系统。 空管1被保持在管芯2和3之间。 储存器7L和7R布置在模具组的相应侧上。 在储存器7L和7R中，左旋梭6L 1，6L 2，6L 3，...。 。 。 6L 和右手梭6 R 1，6 R 2，6 R 3 3。 。 。 存储6 R 。 首先，左手压脚杆5L将梭6L 1从左侧的储料器7L插入到空管中。然后，右手按压杆5R插入梭6 R 1从右手的储料器7 R向空管提供，使梭子6L 1夹带并返回到左手储备器7L。垂直 在左手和右手的储存器7L和7R之间交替地执行换档运动，从而选择用于执行加工过程的可能增加的工作高度的往复运动。

公开(公告)号：US20060016238A1

公开(公告)日：2006-01-26

申请号：US11235137

申请日：2005-09-27

Applicant: Seiji Shiokawa

Inventor： Seiji Shiokawa

IPC: B21D17/00

CPC classification number: B21D53/24 ,  B21D17/02 ,  B21K1/767 ,  Y10T29/49474

Abstract: A system for forging a rack bar from a blank pipe. A blank pipe 1 is held between dies 2 and 3. Stockers 7L and 7R are arranged on respective sides of the die set. In the stockers 7L and 7R, left-handed shuttles 6L1, 6L2, 6L3, . . . 6Ln and right-handed shuttles 6R1, 6R2, 6R3 . . . 6Rn are stored. First, a left-handed presser rod 5L inserts the shuttles 6L1 to the blank pipe from the left-handed stocker 7L. Then, a right-handed presser rod 5R inserts the shuttles 6R1 to the blank pipe from the right-handed stocker 7R, causing the shuttles 6L1 to be entrained and returned to the left-handed stocker 7L. Vertical shift movement is alternately executed between the left-handed and right-handed stockers 7L and 7R, so that a shuttle of step-likely increased working height is selected for executing a working process.

Abstract translation: 用于从空白管锻造齿条的系统。 空管1被保持在管芯2和3之间。 储存器7L和7R布置在模具组的相应侧上。 在储存器7L和7R中，左旋梭6L 1，6L 2，6L 3，...。 。 。 6L 和右手梭6 R 1，6 R 2，6 R 3 3。 。 。 存储6 R 。 首先，左手压脚杆5L将梭6L 1从左侧的储料器7L插入到空管中。然后，右手按压杆5R插入梭6 R 1从右手的储料器7 R向空管提供，使梭子6L 1夹带并返回到左手储备器7L。垂直 在左手和右手的储存器7L和7R之间交替地执行换档运动，从而选择用于执行加工过程的可能增加的工作高度的往复运动。