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公开(公告)号：US06472787B1
公开(公告)日：2002-10-29
申请号：US09786316
申请日：2001-03-02
申请人： Hironori Kameno , Hirochika Ueyama
发明人： Hironori Kameno , Hirochika Ueyama
IPC分类号： F16C3204
CPC分类号： F16C32/0451 , G05B5/01 , G05B13/024 , G05B21/02
摘要： In a control unit for magnetic bearing, a sampling frequency of a DSP 4 is varied according to a number of rotation of a rolling element 1. Thus, a frequency band to be damped by a notch filter 42 as a digital filter is varied in correspondence with a resonance frequency associated with a natural frequency and a rotational vibration frequency, thereby to damp a resonance signal contained in a control signal. The occurrence of resonance is thus prevented through digital control.
摘要翻译： 在用于磁轴承的控制单元中，DSP4的采样频率根据滚动元件1的旋转次数而变化。因此，作为数字滤波器的由陷波滤波器42阻尼的频带相应地变化 具有与固有频率和旋转振动频率相关联的共振频率，从而衰减包含在控制信号中的谐振信号。 因此通过数字控制来防止共振的发生。
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公开(公告)号：US06653756B2
公开(公告)日：2003-11-25
申请号：US09759154
申请日：2001-01-16
IPC分类号： H02K709
CPC分类号： H02K7/09 , F16C19/06 , F16C32/0442 , F16C32/0455 , F16C32/0489 , F16C39/02 , F16C2231/00 , F16C2300/34
摘要： A magnetic bearing device includes a pair of electromagnets holding a rotary body at opposite sides thereof in the direction of each of control axes, a detector for detecting the position of the rotary body, and an electromagnet controller having an integral operation unit for controlling the electromagnets based on the result of detection of the position. The electromagnet controller sets as a target levitated position of the rotary body the position of the rotary body corresponding to the median of an integral output of the integral operation unit when the rotary body is magnetically levitated in the vicinity of one of limit positions in the direction of the control axis determined by protective bearings and an integral output of the unit when the rotary body is magnetically levitated in the vicinity of the other limit position.
摘要翻译： 一种磁性轴承装置，包括一对电磁铁，其在每个控制轴的方向的相对侧保持旋转体，用于检测旋转体的位置的检测器和具有用于控制电磁体的积分操作单元的电磁体控制器 基于检测位置的结果。 当旋转体在方向上的一个极限位置附近磁悬浮时，电磁体控制器将旋转体的位置与旋转体的整体输出的中值相对应地设定为旋转体的目标悬浮位置， 由保护轴承确定的控制轴线和当旋转体在另一个极限位置附近磁悬浮时的整体输出。
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公开(公告)号：US20090042479A1
公开(公告)日：2009-02-12
申请号：US12222218
申请日：2008-08-05
申请人： Hironori Kameno , Atsushi Kubo , Takayuki Ishigami
发明人： Hironori Kameno , Atsushi Kubo , Takayuki Ishigami
CPC分类号： B24B41/044 , B24B49/00
摘要： A grinding wheel formed on an outer peripheral surface with a grinding surface is attached to a grinding wheel spindle supported by axial active magnetic bearings and radial active magnetic bearings in a noncontact manner axially and radially and rotated by an electric motor. A casing is axially positioned and then is radially moved and a ground part of a workpiece is ground. Before the casing moves radially and the grinding wheel comes in contact with the workpiece, the stiffness value of the radial magnetic bearings is set to an initialization value lower than a value at the usual grinding time and after the grinding surface of the grinding wheel comes in contact with the workpiece, the stiffness value of the radial magnetic bearings is set to a value higher than the initialization value for grinding the workpiece.
摘要翻译： 在具有磨削表面的外周面上形成的砂轮通过轴向和径向以轴向有源磁轴承和径向主动磁轴承支撑的砂轮主轴以及电动马达旋转。 壳体被轴向定位，然后径向移动，并且工件的接地部分被研磨。 在壳体径向移动并且砂轮与工件接触之前，径向磁轴承的刚度值被设定为低于通常研磨时间的值的初始化值，并且在研磨轮的磨削表面进入 与工件接触时，径向磁轴承的刚度值设定为高于用于磨削工件的初始化值。
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公开(公告)号：US07466051B2
公开(公告)日：2008-12-16
申请号：US10523030
申请日：2002-08-02
CPC分类号： F16C32/0438 , F16C2300/02 , H02K7/09
摘要： A superconductive magnetic bearing 22 comprises a stationary bearing portion 23 having an annular superconductor unit 26 provided on a fixed portion 20, and a rotatable bearing portion 24 having annular permanent magnet units 28, 29 provided on a rotary portion 21 so as to be opposed to the superconductor unit 26. The rotary portion 21 is contactlessly supported relative to the fixed portion 20 by the pinning effect of a superconductor constituting the superconductor unit 26. The permanent magnet units 28, 29 each comprise a plurality of permanent magnet members arranged in superposed layers with an insulating layer provided between each adjacent pair of magnet members.
摘要翻译： 超导磁轴承22包括具有设置在固定部分20上的环形超导体单元26的固定轴承部分23和设置在旋转部分21上以与旋转部分21相对的环形永磁体单元28,29的可旋转轴承部分24。 超导体单元26.旋转部21通过构成超导体单元26的超导体的固定效果而相对于固定部20非接触地支撑。永磁体单元28,29分别包括多个重叠的永磁体构件 其中绝缘层设置在每个相邻的一对磁体构件之间。
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公开(公告)号：US20060103249A1
公开(公告)日：2006-05-18
申请号：US10523030
申请日：2002-08-02
IPC分类号： H02K7/09
CPC分类号： F16C32/0438 , F16C2300/02 , H02K7/09
摘要： A superconductive magnetic bearing 22 comprises a stationary bearing portion 23 having an annular superconductor unit 26 provided on a fixed portion 20, and a rotatable bearing portion 24 having annular permanent magnet units 28, 29 provided on a rotary portion 21 so as to be opposed to the superconductor unit 26. The rotary portion 21 is contactlessly supported relative to the fixed portion 20 by the pinning effect of a superconductor constituting the superconductor unit 26. The permanent magnet units 28, 29 each comprise a plurality of permanent magnet members arranged in superposed layers with an insulating layer provided between each adjacent pair of magnet members.
摘要翻译： 超导磁轴承22包括具有设置在固定部分20上的环形超导体单元26的固定轴承部分23和设置在旋转部分21上以与旋转部分21相对的环形永磁体单元28,29的可旋转轴承部分24。 超导体单元26。 通过构成超导体单元26的超导体的固定效果，旋转部分21相对于固定部分20非接触地支撑。 永磁体单元28,29各自包括多个永久磁铁构件，该多个永磁体构件布置成叠置的层，其中绝缘层设置在每个相邻的一对磁体构件之间。
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公开(公告)号：US07812493B2
公开(公告)日：2010-10-12
申请号：US12076741
申请日：2008-03-21
申请人： Atsushi Kubo , Hironori Kameno , Takayuki Ishigami
发明人： Atsushi Kubo , Hironori Kameno , Takayuki Ishigami
CPC分类号： B23Q1/70 , B23Q17/0976 , B24B41/007 , F16C32/0402 , F16C32/048 , F16C2322/39 , H02K7/09
摘要： In a spindle apparatus for a machine tool, a spindle is supported on a housing by support-purpose bearing devices, and is rotated by an electric motor, and a tool is attached to a tool attaching portion formed at a distal end of the spindle. A radial magnetic bearing for vibration suppressing purposes which includes a plurality of electromagnets is provided around the tool attaching portion of the spindle. A plurality of radial displacement sensors for detecting a displacement of the tool attaching portion in radial directions are provided around the tool attaching portion. There is provided an electromagnet control unit for controlling the electromagnets of the radial magnetic bearing on the basis of outputs of the radial displacement sensors so as to support the tool attaching portion in a predetermined position.
摘要翻译： 在机床的主轴装置中，主轴通过支撑用轴承装置支撑在壳体上，并且通过电动机旋转，并且工具附接到形成在主轴的远端的工具附接部。 在主轴的工具安装部周围设置有包括多个电磁体的用于振动抑制目的的径向磁轴承。 在工具安装部周围设置有用于检测工具安装部的径向位移的多个径向位移传感器。 提供了一种用于基于径向位移传感器的输出来控制径向磁轴承的电磁体以便将工具附接部分支撑在预定位置的电磁体控制单元。
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公开(公告)号：US20090009018A1
公开(公告)日：2009-01-08
申请号：US12216488
申请日：2008-07-07
申请人： Hironori Kameno
发明人： Hironori Kameno
IPC分类号： H02K7/09
CPC分类号： F16C32/044 , B23Q15/18 , F16C2322/39 , G05B2219/45161 , G05B2219/49207
摘要： Displacement data of axial position targets measured by axial displacement sensors is transmitted to a first main spindle elongation computation section, which then computes elongation of a main spindle between the axial position targets. The computation result is transmitted to a second main spindle elongation computation section, which then computes elongation of the main spindle between one of the axial position targets provided on the side of a tool and the tool. The computation result is transmitted to an axial position control section. The axial position control section changes the power to be supplied to axial magnetic bearing parts, thereby controlling the axial position of the main spindle so that the axial position of the tool becomes constant.
摘要翻译： 由轴向位移传感器测量的轴向位置目标的位移数据被传送到第一主轴伸长计算部分，然后计算主轴在轴向位置目标之间的伸长率。 计算结果被传送到第二主轴伸长计算部分，该部分随后计算在设置在工具侧面的轴向位置目标之一和工具之间的主轴的伸长率。 计算结果被传送到轴向位置控制部。 轴向位置控制部将要供给到轴向磁性轴承部的功率变更，从而控制主轴的轴向位置，使得工具的轴向位置恒定。
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