公开(公告)号：US20100284638A1

公开(公告)日：2010-11-11

申请号：US12769437

申请日：2010-04-28

申请人： Junichi Hirata

发明人： Junichi Hirata

IPC分类号： F16C32/06

CPC分类号： F16C32/067 ,  F16C32/0614 ,  F16C32/0685 ,  F16C2360/42

摘要： A gas bearing spindle includes a rotation shaft, a sleeve, and a housing. The sleeve includes a bearing portion formed of a nonmetallic sintered body; and a retaining ring formed of a metal. Further, the retaining ring and the bearing portion are in contact with each other at a first fit surface that is a boundary surface between the outer circumferential surface of the bearing portion and the inner circumferential surface of the retaining ring, as well as at a second fit surface that is a boundary surface between the outer circumferential surface of the bearing portion and the inner circumferential surface of the retaining ring, is distant further away from the sleeve through hole relative to the first fit surface, and is formed adjacent to a center of the sleeve through hole in a direction in which the sleeve through hole extends, when viewed from the first fit surface.

摘要翻译： 气体轴承心轴包括旋转轴，套筒和壳体。 套筒包括由非金属烧结体形成的轴承部分; 以及由金属形成的保持环。 此外，保持环和轴承部在作为支承部的外周面与保持环的内周面之间的边界面的第一配合面以及第二配合面处彼此接触 作为支承部的外周面与保持环的内周面之间的边界面的配合面相对于第一配合面远离套筒通孔远离，并且形成为邻近于 当从第一配合表面观察时，套筒通孔在套筒通孔延伸的方向上延伸。

公开(公告)号：US20100123362A1

公开(公告)日：2010-05-20

申请号：US12606653

申请日：2009-10-27

申请人： Junichi Hirata

发明人： Junichi Hirata

IPC分类号： H02K5/167 ,  F16C32/06

CPC分类号： H02K7/085 ,  F16C32/0666 ,  F16C2300/14 ,  F16C2316/10

摘要： A hydrostatic bearing pad type rotating device includes: a stationary body; an axial pad and a radial pad each attached to the stationary body; a rotating body supported by the axial pad and the radial pad at least in the radial direction toward an axis thereof so as to be rotatable about the axis; and a motor for providing a driving force to rotate the rotating body. The motor includes a stator attached to the stationary body, and a rotor attached to the rotating body to be opposite to the stator with a gap interposed therebetween. At least one of the stator and the rotor is attached such that its location is adjustable in the radial direction toward the axis and the axial direction along the axis. In this way, a hydrostatic bearing pad type rotating device having highly precise rotation performance can be provided.

摘要翻译： 静压轴承瓦片式旋转装置包括：固定体; 轴向垫和径向垫，每个附接到固定体; 所述旋转体至少沿所述轴向衬垫和所述径向衬垫沿轴向支撑，以便能够围绕所述轴线旋转; 以及用于提供使旋转体旋转的驱动力的电动机。 电动机包括固定在固定体上的定子，以及安装在旋转体上的转子，与定子相对设置，间隔开。 定子和转子中的至少一个被安装成使得它的位置沿轴向的径向方向和轴线的轴向可调节。 以这种方式，可以提供具有高精度旋转性能的静压轴承瓦块式旋转装置。

公开(公告)号：US07281851B2

公开(公告)日：2007-10-16

申请号：US10951615

申请日：2004-09-29

申请人： Teruyoshi Horiuchi ,  Junichi Hirata

发明人： Teruyoshi Horiuchi ,  Junichi Hirata

IPC分类号： F16C32/06

CPC分类号： G01D5/34738 ,  F16C32/0603 ,  F16C32/0696

摘要： There is provided a spindle device utilizing an externally pressurized gas bearing assembly, in which the center of a pulse disc of a rotary encoder can be adjusted to minimize an unbalance of the weight of the pulse disc and such unbalance can be adjusted easily to minimize fluctuation of the pulse disc during rotation and to achieve a highly precise detection of the rotational position consistent with the resolution of the rotary encoder. The spindle device includes an externally pressurized gas bearing assembly (3) for rotatably supporting a shaft (1), a motor (10) for driving the shaft (1), and a rotary encoder (19) for detecting a rotational position. A pulse disc (16) of the rotary encoder (19) is fixed on a mounting surface (S), arranged in the vicinity of one end of the shaft (1) and lying perpendicular to a central axis of the shaft (1), by a fastening member (17) such as a bolt removably inserted through a fastening member inserting portion (7) provided in the pulse disc (16). The mounting surface (S) is an end face of a mounting base (12) fixed to that end of the shaft (1). This mounting base (12) is fixed to the shaft (1) by means of a plurality of radially extending set screws (13).

摘要翻译： 提供了一种利用外部加压的气体轴承组件的主轴装置，其中可以调节旋转编码器的脉冲盘的中心以最小化脉冲盘的重量的不平衡，并且可以容易地调整这种不平衡以最小化波动 并且实现与旋转编码器的分辨率一致的旋转位置的高精度检测。 主轴装置包括用于可旋转地支撑轴（1）的外部加压气体轴承组件（3），用于驱动轴（1）的马达（10）和用于检测旋转位置的旋转编码器（19）。 旋转编码器（19）的脉冲盘（16）固定在安装面（S）上，该安装面设置在轴（1）的一端附近并垂直于轴（1）的中心轴线， 通过诸如通过设置在脉冲盘（16）中的紧固构件插入部分（7）可移除地插入的螺栓的紧固构件（17）。 安装表面（S）是固定到轴（1）的该端部的安装基座（12）的端面。 该安装基座（12）通过多个径向延伸的定位螺钉（13）固定在轴（1）上。

公开(公告)号：US4857417A

公开(公告)日：1989-08-15

申请号：US141073

申请日：1988-01-05

申请人： Susumu Kitaoka ,  Haruo Andoh ,  Junichi Hirata

发明人： Susumu Kitaoka ,  Haruo Andoh ,  Junichi Hirata

IPC分类号： G11B5/706

CPC分类号： G11B5/70694 ,  Y10S428/90 ,  Y10T428/2991

摘要： Cobalt-containing iron oxide magnetic particles having a high coercive force and a small surface electrical resistance which are useful as a recording element for a magnetic recording medium, and a method for the preparation of the same comprising reducing acicular .gamma.-Fe.sub.2 O.sub.3 particles in a reducing gas or liquid until the iron oxide reaches an intermediate oxidation state between .gamma.-Fe.sub.2 O.sub.3 and Fe.sub.3 O.sub.4, dispersing the resulting iron oxide particles into an aqueous solution containing a cobalt salt and optionally a ferrous salt and an alkali of one equivalent or more to the metal salt(s), and heating the mixture at a temperature of higher than room temperature up to a boiling point of the mixture under an atmospheric condition such that the divalent iron is substantially not oxidized. The cobalt is thereby predominantly incorporated into the most outer layer of the acicular iron oxide particles.

摘要翻译： 可用作磁记录介质的记录元件的具有高矫顽力和小表面电阻的含钴氧化铁磁性颗粒及其制备方法包括还原针状γ-Fe2O3颗粒的还原性 气体或液体，直到氧化铁在γ-Fe 2 O 3与Fe 3 O 4之间达到中间氧化态，将得到的氧化铁颗粒分散到含有钴盐和任选的亚铁盐和一当量或更多的碱金属盐的水溶液中 并在大气条件下在高于室温的温度下将该混合物加热到混合物的沸点，使得二价铁基本上不被氧化。 因此，钴主要并入针状氧化铁颗粒的最外层。

公开(公告)号：US09555721B2

公开(公告)日：2017-01-31

申请号：US14951029

申请日：2015-11-24

申请人： Yingjie Zhang ,  Junichi Hirata

发明人： Yingjie Zhang ,  Junichi Hirata

IPC分类号： B60L15/00 ,  B60L15/20 ,  B60L3/10 ,  B60L3/12

CPC分类号： B60L15/2009 ,  B60L3/102 ,  B60L3/106 ,  B60L3/12 ,  B60L2220/42 ,  B60L2220/44 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2260/44 ,  B60L2270/145 ,  Y02T10/645 ,  Y02T10/646 ,  Y02T10/7275

摘要： A slip control device for an electric automobile includes a maximum rotation frequency calculator to calculate a drive wheel maximum rotation frequency Nmax on the basis of a rotation frequency N1 of a driven wheel and an ideal slip ratio λmin according to the formula (Nmax−N1)/N1=λmin. It is determined whether a drive wheel rotation frequency N2 exceeds the frequency Nmax. If it is determined that the frequency N2 exceeds the frequency Nmax, a torque command value to a motor unit is made to be zero.

摘要翻译： 用于电动汽车的滑动控制装置包括最大旋转频率计算器，用于根据公式（Nmax-N1）计算基于从动轮的旋转频率N1和理想滑移比λmin的驱动轮最大旋转频率Nmax， / N1 =λmin。 确定驱动轮转速N2是否超过频率Nmax。 如果确定频率N2超过频率Nmax，则将对马达单元的转矩指令值设定为零。

公开(公告)号：US20130006540A1

公开(公告)日：2013-01-03

申请号：US13520418

申请日：2010-12-24

申请人： Tomoya Sakaguchi ,  Nobuyuki Ninoyu ,  Junichi Hirata ,  Yasuhiko Sakakibara

发明人： Tomoya Sakaguchi ,  Nobuyuki Ninoyu ,  Junichi Hirata ,  Yasuhiko Sakakibara

IPC分类号： G06F19/00 ,  G01N29/14

CPC分类号： G01H1/003 ,  F03D17/00 ,  F03D80/70 ,  F05B2270/334 ,  G01M13/045 ,  Y02E10/72 ,  Y02E10/722

摘要： An effective value operation unit calculates an effective value of a vibration waveform of a hearing, the vibration waveform being measured by using a vibration sensor. An envelope processing unit performs envelope processing on the vibration waveform measured by using the vibration sensor, thereby generating an envelope waveform of the vibration waveform. An effective value operation unit calculates an effective value of an AC component of the envelope waveform generated by the envelope processing unit. A diagnostic unit diagnoses an abnormality of the bearing based on the effective value of the vibration waveform calculated by the effective value operation unit and the effective value of the AC component of the envelope waveform calculated by the effective value operation unit.

摘要翻译： 有效值操作单元通过使用振动传感器来计算听力的振动波形的有效值，该振动波形是测量的。 信封处理单元对通过使用振动传感器测量的振动波形执行包络处理，从而生成振动波形的包络波形。 有效值操作单元计算由包络处理单元生成的包络波形的AC分量的有效值。 诊断单元基于由有效值运算单元计算的振动波形的有效值和由有效值运算单元计算出的包络波形的交流分量的有效值，诊断轴承的异常。

公开(公告)号：US08162544B2

公开(公告)日：2012-04-24

申请号：US12769437

申请日：2010-04-28

申请人： Junichi Hirata

发明人： Junichi Hirata

IPC分类号： F16C32/06

CPC分类号： F16C32/067 ,  F16C32/0614 ,  F16C32/0685 ,  F16C2360/42

摘要： A gas bearing spindle includes a rotation shaft, a sleeve, and a housing. The sleeve includes a bearing portion formed of a nonmetallic sintered body; and a retaining ring formed of a metal. Further, the retaining ring and the bearing portion are in contact with each other at a first fit surface that is a boundary surface between the outer circumferential surface of the bearing portion and the inner circumferential surface of the retaining ring, as well as at a second fit surface that is a boundary surface between the outer circumferential surface of the bearing portion and the inner circumferential surface of the retaining ring, is distant further away from the sleeve through hole relative to the first fit surface, and is formed adjacent to a center of the sleeve through hole in a direction in which the sleeve through hole extends, when viewed from the first fit surface.

摘要翻译： 气体轴承心轴包括旋转轴，套筒和壳体。 套筒包括由非金属烧结体形成的轴承部分; 以及由金属形成的保持环。 此外，保持环和轴承部在作为支承部的外周面与保持环的内周面之间的边界面的第一配合面以及第二配合面处彼此接触 作为支承部的外周面与保持环的内周面之间的边界面的配合面相对于第一配合面远离套筒通孔远离，并且形成为邻近于 当从第一配合表面观察时，套筒通孔在套筒通孔延伸的方向上延伸。

公开(公告)号：US20050069233A1

公开(公告)日：2005-03-31

申请号：US10951615

申请日：2004-09-29

申请人： Teruyoshi Horiuchi ,  Junichi Hirata

发明人： Teruyoshi Horiuchi ,  Junichi Hirata

IPC分类号： G01D5/245 ,  F16C32/06 ,  F16F15/32 ,  G01D5/347 ,  G01D5/34

CPC分类号： G01D5/34738 ,  F16C32/0603 ,  F16C32/0696

摘要： There is provided a spindle device utilizing an externally pressurized gas bearing assembly, in which the center of a pulse disc of a rotary encoder can be adjusted to minimize an unbalance of the weight of the pulse disc and such unbalance can be adjusted easily to minimize fluctuation of the pulse disc during rotation and to achieve a highly precise detection of the rotational position consistent with the resolution of the rotary encoder. The spindle device includes an externally pressurized gas bearing assembly (3) for rotatably supporting a shaft (1), a motor (10) for driving the shaft (1), and a rotary encoder (19) for detecting a rotational position. A pulse disc (16) of the rotary encoder (19) is fixed on a mounting surface (S), arranged in the vicinity of one end of the shaft (1) and lying perpendicular to a central axis of the shaft (1), by a fastening member (17) such as a bolt removably inserted through a fastening member inserting portion (7) provided in the pulse disc (16). The mounting surface (S) is an end face of a mounting base (12) fixed to that end of the shaft (1). This mounting base (12) is fixed to the shaft (1) by means of a plurality of radially extending set screws (13).

摘要翻译： 提供了一种利用外部加压的气体轴承组件的主轴装置，其中可以调节旋转编码器的脉冲盘的中心以最小化脉冲盘的重量的不平衡，并且可以容易地调整这种不平衡以最小化波动 并且实现与旋转编码器的分辨率一致的旋转位置的高精度检测。 主轴装置包括用于可旋转地支撑轴（1）的外部加压气体轴承组件（3），用于驱动轴（1）的马达（10）和用于检测旋转位置的旋转编码器（19）。 旋转编码器（19）的脉冲盘（16）固定在安装面（S）上，该安装面设置在轴（1）的一端附近并垂直于轴（1）的中心轴线， 通过诸如通过设置在脉冲盘（16）中的紧固构件插入部分（7）可移除地插入的螺栓的紧固构件（17）。 安装表面（S）是固定到轴（1）的该端部的安装基座（12）的端面。 该安装基座（12）通过多个径向延伸的定位螺钉（13）固定在轴（1）上。

公开(公告)号：US4741921A

公开(公告)日：1988-05-03

申请号：US858575

申请日：1986-04-24

申请人： Susumu Kitaoka ,  Haruo Andoh ,  Junichi Hirata

发明人： Susumu Kitaoka ,  Haruo Andoh ,  Junichi Hirata

IPC分类号： G11B5/706 ,  C01G49/06

CPC分类号： G11B5/70694 ,  Y10S428/90 ,  Y10T428/2991

摘要： Cobalt-containing iron oxide magnetic particles having a high coercive force and a small surface electrical resistance which are useful as a recording element for a magnetic recording medium, and a method for the preparation of the same comprising reducing acicular .gamma.-Fe.sub.2 O.sub.3 particles in a reducing gas or liquid until the iron oxide reaches an intermediate oxidation state between .gamma.-Fe.sub.2 O.sub.3 and Fe.sub.3 O.sub.4, dispersing the resulting iron oxide particles into an aqueous solution containing a cobalt salt and optionally a ferrous salt and an alkali of one equivalent or more to the metal salt(s), and heating the mixture at a temperature of higher than room temperature up to a boiling point of the mixture under an atmospheric condition such that the divalent iron is substantially not oxidized. The cobalt is thereby predominantly incorporated into the most outer layer of the acicular iron oxide particles.

摘要翻译： 可用作磁记录介质的记录元件的具有高矫顽力和小表面电阻的含钴氧化铁磁性颗粒及其制备方法包括还原针状γ-Fe2O3颗粒的还原性 气体或液体，直到氧化铁在γ-Fe 2 O 3与Fe 3 O 4之间达到中间氧化态，将得到的氧化铁颗粒分散到含有钴盐和任选的亚铁盐和一当量或更多的碱金属盐的水溶液中 并在大气条件下在高于室温的温度下将该混合物加热到混合物的沸点，使得二价铁基本上不被氧化。 因此，钴主要并入针状氧化铁颗粒的最外层。