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    Closed forging die and forging method
    1.
    发明申请
    Closed forging die and forging method 有权
    封闭锻造和锻造方法

    公开(公告)号：US20080184765A1

    公开(公告)日：2008-08-07

    申请号：US12007099

    申请日：2008-01-07

    申请人： Miao Jiahua ,  Akira Sera ,  Nobuo Suzuki

    发明人： Miao Jiahua ,  Akira Sera ,  Nobuo Suzuki

    IPC分类号： B21J13/02 ,  B21J5/02

    CPC分类号： B21K1/762 ,  B21J5/02 ,  B21K1/763

    摘要： The present invention provides a closed forging die and a forging method with which sagging can be reduced, a constant velocity joint and a universal joint can be made compact and lightweight, remove of a shaft tip thereof by machining prior to heat treatment is not required, and material costs and machining costs can be reduced. The closed forging die according to the present invention includes openable dies (11, 12), and punches (14, 15) that move in an opening/closing direction of the dies (11, 12) to pressurize a material in the dies (11, 12). By using the die, a product (16) having shaft portions (17) formed radially is manufactured. A clearance (26) is provided to each of the formed shaft portions (17) between a tip surface (17a), and abutting portions (25) are provided to the dies side abutting against at least a tip side of an outer circumferential surface of the shaft portions (17).

    摘要翻译： 本发明提供了一种封闭锻造模具和锻造方法，其可以降低下垂，可以使等速万向节和万向节紧凑且重量轻，而不需要在热处理之前通过机械加工去除其轴尖， 可以降低材料成本和加工成本。 根据本发明的封闭锻造模具包括可开模（11,12）和沿模具（11,12）的打开/关闭方向移动以对模具（11）中的材料加压的冲头（14,15） ，12）。 通过使用模具，制造具有径向形成的轴部（17）的产品（16）。 在尖端表面（17a）之间的每个形成的轴部分（17）上设置有间隙（26），并且抵靠部分（25）设置在与外周表面的至少一个顶端侧抵接的模具侧 的轴部（17）。

    Closed forging die and forging method
    2.
    发明授权
    Closed forging die and forging method 有权
    封闭锻造和锻造方法

    公开(公告)号：US07900493B2

    公开(公告)日：2011-03-08

    申请号：US12007099

    申请日：2008-01-07

    申请人： Miao Jiahua ,  Akira Sera ,  Nobuo Suzuki

    发明人： Miao Jiahua ,  Akira Sera ,  Nobuo Suzuki

    IPC分类号： B21D22/00

    CPC分类号： B21K1/762 ,  B21J5/02 ,  B21K1/763

    摘要： A closed forging die and a forging method with which sagging can be reduced, a constant velocity joint and a universal joint can be made compact and lightweight, removal of a shaft tip thereof by machining prior to heat treatment is not required, and material costs and machining costs can be reduced by using a closed forging die includes openable dies, and punches that move in an opening/closing direction of the dies to pressurize a material in the dies. By using the die, a product having shaft portions formed radially is manufactured. A clearance is provided to each of the formed shaft portions between a tip surface, and abutting portions are provided to the dies side abutting against at least a tip side of an outer circumferential surface of the shaft portions.

    摘要翻译： 一种封闭的锻造模具和能够减小下垂的锻造方法，可以使等速万向节和紧凑型的万向接头能够紧凑和轻量化，而不需要在热处理之前通过机械加工去除其轴头，并且材料成本和 可以通过使用包括可开式模具的封闭式锻造模具和沿模具的打开/关闭方向移动的冲头对模具中的材料加压来减少加工成本。 通过使用模具，制造具有径向形成的轴部的制品。 在前端面之间的每个形成的轴部分设置有间隙，并且抵靠部分设置在与轴部的外周面的至少前端相抵接的模具侧。

    Forging method, closed forging mold and tripod uniform motion universal joint
    6.
    发明授权
    Forging method, closed forging mold and tripod uniform motion universal joint 有权
    锻造方法，封闭锻造模具和三脚架均匀运动万向节

    公开(公告)号：US08353778B2

    公开(公告)日：2013-01-15

    申请号：US13129648

    申请日：2009-11-30

    申请人： Jiahua Miao ,  Akira Sera ,  Shunsuke Makino

    发明人： Jiahua Miao ,  Akira Sera ,  Shunsuke Makino

    IPC分类号： F16D3/205 ,  B21D22/02

    CPC分类号： F16D3/2055 ,  B21J5/02 ,  B21J5/025 ,  B21K1/762 ,  B21K1/763 ,  F16D2250/00

    摘要： A forging method and a full-enclosed forging die contribute to the alleviation of an enclosing force applied to dies and in which a relatively small enclosing apparatus can be used even with respect to larger-sized products. A tripod type constant velocity universal joint is formed with a tripod member molded with the full-enclosed forging die. The full-enclosed forging die includes openable/closable dies and punches for pressing a material between the dies. From the forging die, the tripod member including a boss portion and shaft portions protruded radially from the boss portion is molded.

    摘要翻译： 锻造方法和全封闭锻造模具有助于减轻施加到模具的封闭力，并且即使对于较大尺寸的产品也可以使用相对较小的封闭装置。 三脚架式等速万向接头用全封闭锻造模具成型的三脚架构件形成。 全封闭锻造模具包括可打开/关闭的模具和用于在模具之间挤压材料的冲头。 由锻造模具成型具有凸起部的三脚架构件和从凸台部径向突出的轴部。

    FORGING METHOD, MOLDING DEVICE FOR FORGINGS, AND TRIPOD UNIFORM MOTION UNIVERSAL JOINT
    8.
    发明申请
    FORGING METHOD, MOLDING DEVICE FOR FORGINGS, AND TRIPOD UNIFORM MOTION UNIVERSAL JOINT 有权
    锻造方法，用于锻造的模具和三维运动通用联合

    公开(公告)号：US20110224005A1

    公开(公告)日：2011-09-15

    申请号：US13129650

    申请日：2009-11-30

    申请人： Jiahua Miao ,  Akira Sera ,  Shunsuke Makino

    发明人： Jiahua Miao ,  Akira Sera ,  Shunsuke Makino

    IPC分类号： F16D3/26 ,  B21D22/00

    CPC分类号： B21J5/025 ,  B21J5/02 ,  B21J9/02 ,  B21J9/022 ,  B21K1/762 ,  B21K1/763 ,  F16D3/2055 ,  F16D3/34 ,  F16D2250/00

    摘要： Provided are a forging method, a forged-product molding apparatus, and a tripod type constant velocity universal joint which contribute to reduction of shear drop and avoidance of an increase in processing load generated through contact of a leading end surface of a shaft portion and dies even when an excessively-heavy raw material is mixed so that a life of the die can be prolonged. After molding a product-to-be-preliminarily-molded to form a preliminarily molded product (20A) as a material, the preliminarily molded product (20A) is put into a full-enclosed forging die (30) so that a product is molded with the full-enclosed forging die (30). On a preliminary leading-end surface to be formed as a leading end surface (17a) of a shaft portion (17) of the product formed of the preliminarily molded product (20A), there is formed a shear-drop suppressing portion (65) for suppressing thickness reduction on a boss-portion side of an outer peripheral portion of the leading end surface (17a) of the shaft portion (17) of the product (16). At a time of putting the preliminarily molded product (20A) into the full-enclosed forging die (30) so as to mold the product (16), a relief portion (26) is formed between the leading end surface (17a) of the shaft portion (17) to be formed and a cavity (24) of the full-enclosed forging die (30).

    摘要翻译： 提供锻造方法，锻造产品成型装置和三脚架式等速万向接头，其有助于降低剪切降低，并且避免由于轴部和模具的前端面的接触而产生的加工负荷的增加 即使当过度沉重的原料混合，从而可以延长模具的使用寿命。 在将预成型产品成型后，形成预成型品（20A）作为材料，将预成型品（20A）放入全封闭锻造模具（30）中，成型品 全封闭锻造模具（30）。 在由预成型体（20A）形成的产品的轴部（17）的前端面（17a）形成的预备前端面上形成有剪切抑制部（65）， 用于抑制产品（16）的轴部（17）的前端面（17a）的外周部的凸台部侧的厚度减小。 在将预成型体（20A）投入到全封闭锻造模具（30）中以成形产品（16）的时刻，在所述前端面（17a）之间形成有释放部（26） 要形成的轴部分（17）和全封闭锻模（30）的空腔（24）。