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5 条记录 (耗时 0.011 秒)

    Hydrodynamic bearing device
    2.
    发明申请
    Hydrodynamic bearing device 失效
    流体动力轴承装置

    公开(公告)号：US20050201645A1

    公开(公告)日：2005-09-15

    申请号：US11071212

    申请日：2005-03-04

    申请人： Takafumi Asada ,  Tsutomu Hamada ,  Hideaki Ohno ,  Yasunori Tokunou

    发明人： Takafumi Asada ,  Tsutomu Hamada ,  Hideaki Ohno ,  Yasunori Tokunou

    IPC分类号： F16C17/10 ,  B25G3/02 ,  F16C33/12 ,  F16C33/20 ,  G11B19/20 ,  H02K5/167 ,  H02K7/08

    CPC分类号： F16C17/107 ,  F16C33/1025 ,  F16C2370/12 ,  Y10S384/902

    摘要： A hydrodynamic bearing device capable of inhibiting leakage of a working fluid to an outside of a bearing and preventing reduction in radial bearing rigidity, and capable of keeping a gap between a thrust bearing and a radial bearing favorable and rotating stably. The hydrodynamic bearing device includes a shaft relatively rotatably inserted into a bearing hole of a sleeve, a radial bearing surface having dynamic pressure generating grooves formed on at least one of an outer peripheral surface of the shaft and an inner peripheral surface of the sleeve, and a gap filled with a working fluid between the shaft and the sleeve. The shaft is made of high manganese chrome steel or stainless steel, and the sleeve is entirely made of sintered metal of metal particles including at least 60% by weight of iron or copper. Resin, metal or water glass is impregnated in pores on a surface of the sintered metal and cured. Thereby, leakage of the working fluid to the outside of the bearing from the sleeve can be inhibited, and reduction in the pressure inside the bearing can be prevented.

    摘要翻译： 一种流体动力轴承装置，其能够抑制工作流体泄漏到轴承的外部，并且防止径向轴承刚性的降低，并且能够使推力轴承和径向轴承之间的间隙保持良好并且稳定地旋转。 流体动力轴承装置包括相对可旋转地插入到套筒的轴承孔中的轴，具有形成在轴的外周表面和套筒的内周表面中的至少一个上的动压产生槽的径向支承表面，以及 在轴和套筒之间填充有工作流体的间隙。 该轴由高锰铬钢或不锈钢制成，并且套筒全部由包含至少60重量％的铁或铜的金属颗粒的烧结金属制成。 将树脂，金属或水玻璃浸渍在烧结金属表面上的孔中并固化。 由此，可以抑制工作流体从套筒向轴承外侧的泄漏，能够防止轴承内的压力的降低。

    Hydrodynamic bearing device
    3.
    发明授权
    Hydrodynamic bearing device 失效
    流体动力轴承装置

    公开(公告)号：US07186028B2

    公开(公告)日：2007-03-06

    申请号：US11071212

    申请日：2005-03-04

    申请人： Takafumi Asada ,  Tsutomu Hamada ,  Hideaki Ohno ,  Yasunori Tokunou

    发明人： Takafumi Asada ,  Tsutomu Hamada ,  Hideaki Ohno ,  Yasunori Tokunou

    IPC分类号： F16C17/02

    CPC分类号： F16C17/107 ,  F16C33/1025 ,  F16C2370/12 ,  Y10S384/902

    摘要： A hydrodynamic bearing device capable of inhibiting leakage of a working fluid to an outside of a bearing and preventing reduction in radial bearing rigidity, and capable of keeping a gap between a thrust bearing and a radial bearing favorable and rotating stably. The hydrodynamic bearing device includes a shaft relatively rotatably inserted into a bearing hole of a sleeve, a radial bearing surface having dynamic pressure generating grooves formed on at least one of an outer peripheral surface of the shaft and an inner peripheral surface of the sleeve, and a gap filled with a working fluid between the shaft and the sleeve. The shaft is made of high manganese chrome steel or stainless steel, and the sleeve is entirely made of sintered metal of metal particles including at least 60% by weight of iron or copper. Resin, metal or water glass is impregnated in pores on a surface of the sintered metal and cured. Thereby, leakage of the working fluid to the outside of the bearing from the sleeve can be inhibited, and reduction in the pressure inside the bearing can be prevented.

    摘要翻译： 一种流体动力轴承装置，其能够抑制工作流体泄漏到轴承的外部，并且防止径向轴承刚性的降低，并且能够使推力轴承和径向轴承之间的间隙保持良好并且稳定地旋转。 流体动力轴承装置包括相对可旋转地插入到套筒的轴承孔中的轴，具有形成在轴的外周表面和套筒的内周表面中的至少一个上的动压产生槽的径向支承表面，以及 在轴和套筒之间填充有工作流体的间隙。 该轴由高锰铬钢或不锈钢制成，并且套筒全部由包含至少60重量％的铁或铜的金属颗粒的烧结金属制成。 将树脂，金属或水玻璃浸渍在烧结金属表面上的孔中并固化。 由此，可以抑制工作流体从套筒向轴承外侧的泄漏，能够防止轴承内的压力的降低。

    Method of manufacturing bottomed hollow cylinder using a press
    5.
    发明授权
    Method of manufacturing bottomed hollow cylinder using a press 失效
    使用压机制造有底的中空圆筒的方法

    公开(公告)号：US5924188A

    公开(公告)日：1999-07-20

    申请号：US811437

    申请日：1997-03-03

    申请人： Yasunori Tokunou ,  Kouichi Inoue ,  Toshikazu Shogase ,  Makoto Sunouchi ,  Takeshi Yoshikawa

    发明人： Yasunori Tokunou ,  Kouichi Inoue ,  Toshikazu Shogase ,  Makoto Sunouchi ,  Takeshi Yoshikawa

    IPC分类号： B21D22/26 ,  B21D22/30 ,  B21D51/10 ,  B21D53/00 ,  G11B5/52 ,  G11B5/53 ,  G11B15/61 ,  G11B5/127

    CPC分类号： G11B5/53 ,  G11B15/61 ,  Y10T29/49041

    摘要： A manufacturing method is provided for forming a hollow cylinder with a bottom which may be employed in rotary head drums of magnetic recording and reproduction systems such as video tape recorders and digital audio tape recorders.The manufacturing method includes pressing a single circular plate to form the hollow cylinder, thrusting an end of a side wall of the hollow cylinder in a direction substantially parallel to the side wall in a press die so as to adjust the thickness of the side wall to be uniform, and machining an outer surface of the side wall of the hollow cylinder so as to have a given surface roughness and a given roundness.

    摘要翻译： 提供一种用于形成具有底部的中空圆柱体的制造方法，其可以用于诸如录像机和数字音频磁带录音机的磁记录和再现系统的旋转磁头鼓中。 制造方法包括按压单个圆板以形成中空圆柱体，在压模中沿基本上平行于侧壁的方向推压中空圆柱体的侧壁的端部，以将侧壁的厚度调整为 均匀，并且加工中空圆筒的侧壁的外表面以具有给定的表面粗糙度和给定的圆度。