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112 条记录 (耗时 0.018 秒)

    Spindle device and bearing device therefor
    1.
    发明授权
    Spindle device and bearing device therefor 失效
    主轴装置及轴承装置

    公开(公告)号：US5683183A

    公开(公告)日：1997-11-04

    申请号：US721345

    申请日：1996-09-26

    申请人： Katsuhiko Tanaka ,  Hiromitsu Muraki ,  Ikunori Sakatani

    发明人： Katsuhiko Tanaka ,  Hiromitsu Muraki ,  Ikunori Sakatani

    IPC分类号： F16C21/00 ,  F16C33/10 ,  F16C33/12 ,  G11B19/20 ,  F16C32/06

    CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C21/00 ,  F16C33/12 ,  F16C33/122 ,  G11B19/2009 ,  F16C2204/20 ,  F16C2370/12

    摘要： A bearing device includes a housing, a shaft arranged in an inner circumference of the housing, and a pair of bearings arranged between the shaft and the housing, and spaced from each other in an axial direction of the shaft, at least one of the bearings comprising a sleeve inserted in the housing and formed cylindrically. The sleeve has an outer layer portion including an outer cylindrical surface and an inner layer portion including an inner cylindrical surface, the outer layer portion being harder than the inner layer portion, the inner cylindrical surface having a groove for generating dynamic pressure. The sleeve is improved in working accuracy, and the dynamic pressure generating grooves can be formed with ease.

    摘要翻译： 轴承装置包括壳体，布置在壳体的内圆周中的轴和布置在轴和壳体之间并且在轴的轴向彼此间隔开的一对轴承，至少一个轴承 包括插入壳体中并形成为圆柱形的套筒。 套筒具有包括外圆柱形表面的外层部分和包括内圆柱形表面的内层部分，外层部分比内层部分硬，内圆柱形表面具有用于产生动压的凹槽。 该套筒的加工精度提高，能够容易地形成动压产生槽。

    Dynamic pressure type fluid bearing
    2.
    发明授权
    Dynamic pressure type fluid bearing 失效
    动压式流体轴承

    公开(公告)号：US4798476A

    公开(公告)日：1989-01-17

    申请号：US724485

    申请日：1985-04-18

    申请人： Ikunori Sakatani ,  Katsuhiko Tanaka ,  Masaru Tamaki

    发明人： Ikunori Sakatani ,  Katsuhiko Tanaka ,  Masaru Tamaki

    IPC分类号： F16C17/08 ,  F16C33/10 ,  F16C17/10 ,  F16C32/06

    CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/08

    摘要： A dynamic pressure type fluid bearing device in which a housing and a shaft rotatable relative to each other are opposed to each other to provide inner and outer bearing surfaces for radial load. One of these bearing surfaces is formed with a groove for generating dynamic pressure and the housing and the shaft are opposed to each other in a first and a second bearing surface for thrust load. A circulation path for circulating lubricant is formed in at least one of the housing and the shaft and opens in the first and/or second bearing surface.

    摘要翻译： 一种动压式流体轴承装置，其中壳体和可相对于彼此旋转的轴彼此相对以提供用于径向载荷的内和外轴承表面。 这些支承面中的一个形成有用于产生动压的槽，并且壳体和轴在第一和第二支承表面中彼此相对以用于推力负载。 用于循环润滑剂的循环路径形成在壳体和轴中的至少一个中，并且在第一和/或第二支承表面中开口。

    Fluid bearing motor
    3.
    发明授权
    Fluid bearing motor 失效
    流体轴承电机

    公开(公告)号：US06264368B1

    公开(公告)日：2001-07-24

    申请号：US09333954

    申请日：1999-06-16

    申请人： Katsuhiko Tanaka ,  Ikunori Sakatani ,  Kazuhiro Uemura

    发明人： Katsuhiko Tanaka ,  Ikunori Sakatani ,  Kazuhiro Uemura

    IPC分类号： F16C3206

    CPC分类号： F16C33/103 ,  F16C33/10 ,  F16C2370/12 ,  G11B19/2009

    摘要： A fluid bearing motor having sufficient room for securing an air chamber for use in quickly discharging bubbles that have entered a thrust fluid bearing and a reservoir for supplying a lubricating fluid to the thrust fluid bearing. Moreover, the fluid bearing motor can easily be fabricated. The fluid bearing motor includes a shaft member 1, a sleeve 2 cooperating with the shaft member and a thrust collar 3 which is fixed to the shaft member 1 and extended in the diametric direction. The circumferentially-directed contour of the outer peripheral face of the thrust collar 3 is made elliptic, so that a reservoir 8 and an air chamber 9 are formed between the outer peripheral face of the thrust collar 3 and the face 4a of the mating member (sleeve).

    摘要翻译： 流体轴承马达具有足够的空间，用于固定用于快速排放进入推力流体轴承的气泡的空气室和用于向推力流体轴承供应润滑流体的储存器。 此外，可以容易地制造流体轴承马达。 流体轴承电动机包括轴构件1，与轴构件配合的套筒2和固定到轴构件1并沿直径方向延伸的止推环3。 止推环3的外周面的周向定向轮廓被制成椭圆形，从而在止推环3的外周面与配合构件的表面4a之间形成储存器8和空气室9（ 袖）。

    Bearing device
    6.
    发明授权
    Bearing device 失效
    轴承装置

    公开(公告)号：US5289067A

    公开(公告)日：1994-02-22

    申请号：US11980

    申请日：1993-02-01

    申请人： Katsuhiko Tanaka ,  Ikunori Sakatani ,  Takeyuki Yoshiba ,  Shigeru Endo

    发明人： Katsuhiko Tanaka ,  Ikunori Sakatani ,  Takeyuki Yoshiba ,  Shigeru Endo

    IPC分类号： F16C33/10 ,  F16C39/06 ,  H02K5/16 ,  H02K7/09

    CPC分类号： F16C32/044 ,  F16C17/026 ,  F16C17/107 ,  F16C32/0402 ,  F16C33/107 ,  H02K5/1677 ,  H02K7/09

    摘要： A bearing device comprising a fixed shaft having a first radial bearing surface, a sleeve provided in a fitting relationship with the fixed shaft and having a second radial bearing surface opposed to the first radial bearing surface, the second radial bearing surface having herring-bone grooves thereon to form a radial gas bearing to support the sleeve with respect to the fixed shaft, and the fixed shaft having one end portion forming part of a magnetic thrust bearing of aspirating type to support the sleeve with respect to the fixed shaft.

    摘要翻译： 一种轴承装置，包括具有第一径向支承表面的固定轴，与所述固定轴配合关系的套筒，并具有与所述第一径向支承表面相对的第二径向支承表面，所述第二径向支承表面具有鲱鱼骨槽 形成用于相对于固定轴支撑套筒的径向气体轴承，并且固定轴具有一个端部，该端部构成吸气型磁力推力轴承的一部分，以相对于固定轴支撑套筒。

    Dynamic pressure type fluid bearing
    7.
    发明授权
    Dynamic pressure type fluid bearing 失效
    动压式流体轴承

    公开(公告)号：US4547081A

    公开(公告)日：1985-10-15

    申请号：US611385

    申请日：1984-05-17

    申请人： Katsuhiko Tanaka ,  Ikunori Sakatani

    发明人： Katsuhiko Tanaka ,  Ikunori Sakatani

    IPC分类号： F16C17/10 ,  F16C17/08 ,  F16C33/10

    CPC分类号： F16C33/106 ,  F16C17/026 ,  F16C17/08 ,  F16C33/107

    摘要： A dynamic pressure type fluid bearing comprises a housing provided with a cylindrical hole having a cylindrically shaped inner bearing surface for radial load and a bottom bearing surface for thrust load, and a shaft disposed in the cylindrical hole and having a cylindrically shaped outer bearing surface for radial load opposed to and cooperative with the inner bearing surface and an end bearing surface for thrust load opposed to and cooperative with the bottom bearing surface. At least one of the inner bearing surface and the outer bearing surface is provided with grooves for generating a dynamic pressure. A communication hole is provided in the bottom bearing surface and opens to the outside of the housing. The bottom bearing surface has around the communication hole an annular contact bearing surface which contacts the end bearing surface when the bearing is stationary.

    摘要翻译： 动压式流体轴承包括：壳体，其具有圆柱形孔，该圆柱形孔具有用于径向载荷的圆柱形内轴承表面和用于推力载荷的底部承载面，以及设置在圆柱形孔中的轴，并具有圆柱形外部支承表面， 与内轴承表面相对并与之配合的径向载荷以及与底部支承表面相对并与之协调的推力载荷的端部支承表面。 内轴承表面和外支承表面中的至少一个设置有用于产生动压的凹槽。 一个连通孔设置在底部支承表面中并且通向壳体的外部。 底部承载表面在连通孔周围具有环形接触支承表面，当轴承静止时，其与端部支承表面接触。

    Dynamic pressure type fluid bearing device
    9.
    发明授权
    Dynamic pressure type fluid bearing device 失效
    动压式流体轴承装置

    公开(公告)号：US4934836A

    公开(公告)日：1990-06-19

    申请号：US393700

    申请日：1989-08-14

    申请人： Katsuhiko Tanaka ,  Ikunori Sakatani ,  Takeyuki Yoshiba ,  Takanobu Sato ,  Kiyoshi Haginuma ,  Toshimi Takajou ,  Hiromi Sugi

    发明人： Katsuhiko Tanaka ,  Ikunori Sakatani ,  Takeyuki Yoshiba ,  Takanobu Sato ,  Kiyoshi Haginuma ,  Toshimi Takajou ,  Hiromi Sugi

    IPC分类号： F16C17/10 ,  F16C33/10

    CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/107

    摘要： A housing has a vertically extending cylindrical bore, with a radical bearing surface formed on the inner peripheral surface, and a thrust bearing surface formed on the inner bottom surface of the cylindrical bore. A shaft member which is supported rotatably in the cylindrical bore of the housing has a radial receiving surface and a thrust receiving surface respectively formed on the outer peripheral surface and the bottom surface. A dynamic pressure generating groove of a spiral shape is formed in at least one of the radial bearing surface and ther radial receiving surface. When the shaft member is rotated, a gas in the housing is sucked by the pumping action of the dynamic pressure generating groove and flows into a pressure chamber between the thrust bearing surface and the thrust receiving surface through a radial space between the radial bearing surface and the radial receiving surface. The pressure in the pressure chamber maintains the shaft member in a floating position by a predetermined amount. The shaft member has a passage bore formed along a center axis line. The passage bore includes a restricted aperture of a smaller diameter which opens at the thrust receiving surface of the shaft member to thereby allow the gas in the pressure chamber to be exhausted into the housing through the passage bore.

    摘要翻译： 壳体具有竖直延伸的圆柱形孔，内圆周表面上形成有自由基轴承表面，以及形成在圆柱孔内底表面上的止推轴承表面。 可旋转地支撑在壳体的圆筒孔中的轴构件具有分别形成在外周表面和底表面上的径向接收表面和止推接收表面。 在径向轴承表面和径向接收表面中的至少一个中形成螺旋形状的动态压力产生槽。 当轴构件旋转时，壳体中的气体通过动压产生槽的泵送作用被吸入，并通过径向支承表面和径向轴承表面之间的径向空间流入推力轴承表面和推力承受表面之间的压力室中 径向接收面。 压力室中的压力将轴构件保持在浮动位置预定量。 轴构件具有沿着中心轴线形成的通道孔。 通道孔包括较小直径的限制孔径，其在轴构件的推力接收表面处开口，从而允许压力室中的气体通过通道孔排出到壳体中。

    Method of stabilizing high-speed control of ball bearing device
    10.
    发明授权
    Method of stabilizing high-speed control of ball bearing device 失效
    稳定球轴承装置高速控制的方法

    公开(公告)号：US06634103B2

    公开(公告)日：2003-10-21

    申请号：US09993710

    申请日：2001-11-27

    申请人： Hiromitsu Muraki ,  Katsuhiko Tanaka ,  Shigeru Endo ,  Chuichi Sato ,  Ikunori Sakatani ,  Shoji Noguchi

    发明人： Hiromitsu Muraki ,  Katsuhiko Tanaka ,  Shigeru Endo ,  Chuichi Sato ,  Ikunori Sakatani ,  Shoji Noguchi

    IPC分类号： B21D5310

    CPC分类号： F16C35/077 ,  F16C11/04 ,  F16C27/04 ,  F16C2370/12 ,  Y10T29/49682 ,  Y10T29/49696

    摘要： The locus of the displacement of the centers of the balls of a ball bearing is made elliptical and the radial bearing rigidity of the ball bearing in one radial direction is made greater than the radial bearing rigidity in another radial direction orthogonal to the one radial direction, or at least one of the axial length of the portion on the outer diametral surface of the inner race of the ball bearing which is fitted to a shaft and the axial length of the portion on the outer diametral surface of the outer race of the ball bearing which is fitted to a housing is made ½ or less of the bearing width of the ball bearing, whereby the radial rigidity of a ball bearing device is made very small as compared with the radial rigidity in the prior art. As a result, the stability of a swing arm system can be enhanced and higher speed and higher accuracy of control become possible.

    摘要翻译： 球轴承的球的中心的位移轨迹被制成椭圆形，并且球轴承在一个径向上的径向承载刚度被制成大于与一个径向正交的另一个径向方向上的径向轴承刚度， 或装配在轴上的球轴承的内圈的外径表面上的部分的轴向长度和滚珠轴承外圈的外径表面的部分的轴向长度中的至少一个 将其安装到壳体上的距离为球轴承的轴承宽度的1/2以下，由此与现有技术中的径向刚度相比，球轴承装置的径向刚度非常小。 结果，可以提高摆臂系统的稳定性，并且可以实现更高的速度和更高的控制精度。