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Matches 851 - 900 out of 5,177

Document Document Title
JP2012219991
To solve the problem that a levitation control current in an electromagnet dominantly includes components having frequencies lower than sensing carrier frequencies and so, when sensing carrier components are only extracted from an electr...  
JP2012219941
To provide a radial magnetic bearing device that is miniaturizable.The radial magnetic bearing device includes a radial electromagnet for supporting a shaft 3 fixed to a rotor in a magnetically non-contacting manner, a displacement senso...  
JP2012197929
To provide a satisfactory magnet bearing even in a corrosion environment.An encapsulated magnet assembly includes: a magnet 158 disposed within a housing that includes at least one wall 164 and defines at least one aperture; and a housin...  
JP2012193017
To provide a magnetic levitation controller which can support an object of a large mass in a contactless state.The magnetic levitation controller includes: a support force generating permanent magnet 21 for generating magnetic flux which...  
JP2012180937
To provide a static-pressure air bearing linear guide device which has a guide member capable of improving own-weight warpage even if the member is long in length and the size of a cross section becomes large, and can reduce manufacturin...  
JP2012177385
To provide a hydrostatic water bearing linear guide device, with which pitching is extremely small during the movement of a table.This hydrostatic water bearing linear guide device 1 is configured so that a magnetic balancer 300 is attac...  
JP2012177480
To provide a method of controlling the instability in fluid film bearings by using a magnetic bearing in combination with a fluid film bearing.The fluid film bearing 18 serves as the primary load carrying bearing and the magnetic bearing...  
JP2012172756
To provide a magnetic bearing device capable of stabilizing a natural frequency of a bending vibration mode, and a rotary machine equipped with the magnetic bearing device.The magnetic bearing device includes: a thrust disk 27 which rota...  
JP2012167721
To provide an air spindle unit suppressing air consumption and causing no galling phenomenon on the air spindle unit even when the pressure of supplied air is reduced.The air spindle unit 36 includes a spindle housing 38 defining a thrus...  
JP2012167699
To reduce maximum electromagnetic force required for moving a driving shaft in the center-axis direction of a magnetic bearing when the magnetic bearing is started, while securing a clearance between the driving shaft and a cylindrical m...  
JP2012163151
To provide a static pressure gas bearing linear guide device in which a movable body has a tubeless structure since a compressed air for floating the movable body is jetted from a guide rail.The guide device includes a guide rail 2 fixed...  
JP2012159103
To provide a hydrostatic slider with improved position correction function of a movable body.The hydrostatic slider (1) includes a fixed body (2) and a movable body (3). The movable body (3) is capable of relatively moving along the fixe...  
JP2012139030
To suppress the whirling of the motor shaft without requiring a significant burden in a motor controller having a plurality of units.Translation movement components αp, βp and rotational movement components αr, βr of shaft displaceme...  
JP2012139029
To provide a motor controller in which the centrifugal-force reduction effect does not decrease even if control delay or current response delay occurs, and a large burden is not required for determining an appropriate shaft position comm...  
JP2012132556
To provide a process of forming a good encapsulated magnet assembly of a magnetic bearing used in corrosive environments.The process includes welding a second portion 152 of a housing cover formed of a non-magnetic material to a first po...  
JP2012127376
To provide a technology of introducing rotational power generated by a power source outside a vacuum chamber into the vacuum chamber without causing leakage, by using a non-contact type sealing mechanism.A cylindrical member 11 is provid...  
JP2012127489
To enable magnetic levitation of a ferromagnet by using repulsion and attraction of an electromagnet.Two or more electromagnets 3 are circularly arranged with their poles facing the same direction. A position sensor 2 and magnetic force ...  
JP2012127415
To achieve guide rail weight reduction, improvement of manufacturing efficiency, and cost reduction and to enable a load under a noncontact state to be supported stably and efficiently when a movable body is shifted and positioned along ...  
JP2012122514
To provide a static pressure gas bearing linear guide device for enabling stable and efficient support of a load in no contact when positioning a movable body moved along a guide rail, while achieving the lighter weight, higher productio...  
JP2012117613
To provide a static pressure gas bearing with high rotation accuracy that can be manufactured at a low cost.A porous body 2 rotatably supporting a rotator that rotates in an arrow direction via a gaseous film has a plurality of effective...  
JP2012120337
To suppress positional fluctuation of a floating body which is caused by a steady external force and to obtain good followability even if a dynamic external force acts, related to a method of converging an excitation current to an electr...  
JP2012117659
To provide a hydrostatic journal bearing of low manufacturing cost and having a hydraulic self-compensation structure.The self-compensating hydrostatic journal bearing includes: a base to mount a shaft, the base having a hole pierced to ...  
JP2012112519
To provide a static fluid pressure bearing unit which is formed with a fluid film having a thickness necessary for maintaining bearing stiffness against disturbance load applied to the hydrostatic bearing to acquire stable bearing stiffn...  
JP2012107744
To provide a static pressure fluid bearing device by which a fluid film having a thickness necessary for maintaining bearing rigidity can be formed by suppressing the lowering of the pressure of a static pressure pocket with respect to a...  
JP2012097793
To provide a roll device enabling reduction in cost, air consumption, the number of parts, and assembling man-hours, and elimination of the possibility of lowering of load capacity in a radial direction due to uneven attractive force by ...  
JP2012097891
To provide a permanent magnet magnetic bearing that can be provided with functions of a radial magnetic bearing and a thrust magnetic bearing, even with a simple configuration.The permanent magnet magnetic bearing has an inner magnet 10 ...  
JP2012078315
To provide a Fermi chopper rotation control device improving a rotary speed and the precision of the rotary speed, and reducing a current spike noise.A Fermi chopper 1 for monochromating neutron beam generated at a pulsed neutron source ...  
JP2012072886
To provide a diaphragm type variable aperture device in which a gap between a diaphragm and a valve seat can be set to a predetermined gap without installing a device such as a gap adjusting mechanism, and to provide a method for manufac...  
JP2012072660
To reduce a rotational loss of a flywheel energy storage device, and to elongate a storage time and increase a storage amount of the energy of the flywheel energy storage device.In this flywheel energy storage device (1) which turnably s...  
JP2012072853
To provide a cam follower capable of achieving low cost of a device and reduction of an air consumption amount.The cam follower 1 includes: a hollow rolling element 2; a shaft 4 inserted through a hollow part of the rolling element 2 wit...  
JP2012057699
To improve rotational accuracy in nanometer order of a rotating body.A static pressure gas bearing has a thrust part 19 in which a rotating body 24 projects to a radial direction of a rotating shaft 20 in a flange shape. One face of the ...  
JP2012060754
To provide a magnetic levitation type rotation introduction apparatus which adopts a magnetic levitation type needless to use a magnetic fluid seal, and which makes it possible to make a length in an axial direction as a device short as ...  
JP2012037014
To provide a static pressure gas bearing spindle which is provided with a cooling structure which cools heat generated from a driving motor of the spindle, a spindle bearing portion or the like efficiently and keeps vacuum environment at...  
JP2012028331
To provide an electric connection enabling to realize leak free electric coupling in an environment of exposure to corrosive gas or liquid.An electric connection portion includes: at least two conductors 10A and 10B for forming electric ...  
JP2012017849
To solve the problem that great care is needed and in particular it is frequently needed to very precisely arrange various kinds constituting parts of a magnetic bearing to a structure when installing in the magnetic bearing.The annular ...  
JP2012007719
To provide a magnetic levitation device having a displacement absorbing mechanism, in which a magnetic unit and a movable frame can be configured without increasing the size of the device when magnetic force is applied from different dir...  
JP2012007708
To provide a superconductive magnetic bearing device in which the improvement of a cooling temperature is achieved by enlarging the rotor of the bearing device to reduce the load per unit area.The rotor corresponding to a superconductive...  
JP2011247367
To provide a structure of gas piping suitable for a static pressure gas bearing linear guide device which is high in moving speed and wide in moving stroke.This static pressure gas bearing linear guide device includes: a linear guide act...  
JP2011247837
To provide a vertical balance measuring apparatus capable of supporting the dead weight of a rotational shaft only by a thrust air bearing by increasing the thrust force of the thrust air bearing formed by pressurized air supplied from a...  
JP2011247405
To provide a guiding device in which a fluid feed part, an exhaust groove or the like can be prepared with high positional accuracy, and a movable body can more stably be moved.The guiding device includes a fixed body with a first surfac...  
JP2011247386
To make an air slide device lightweight while maintaining strength, by making a main part of a guide rail and/or a moving body of the air slide device by a carbon fiber reinforcing plastic (CFRP) composed of a carbon fiber prepreg lamina...  
JP2011241971
To provide a throttle valve easy in setting a throttle characteristic in a simple configuration and inexpensively.The throttle valve 1 equipped in the middle of a fluid passage includes a valve body 2 formed with a piece-containing porti...  
JP2011241955
To provide a roll bearing method capable of exhibiting excellent characteristics of a rolling bearing and a static pressure bearing, namely, capable of exhibiting excellent characteristics of the rolling bearing in a load and rigidity, a...  
JP2011231760
To provide a magnetic levitation vacuum pump prevented from being reversely rotated during the start of rotation of a rotor without comprising a rotor rotating position detection function such as a Hall sensor.In this magnetic levitation...  
JP2011220919
To provide a vertical type balance measuring device that, even if a rotation axis of a thrust air bearing is vertically moved from the balance position thereof due to the influence by disturbance, allows the rotation axis to return to th...  
JP2011220291
To provide a method of effectively suppressing a dynamic thrust load that acts on a main shaft in a low flow region including the neighborhood of a cut-off point in a horizontal double suction pump configured to support a radial load by ...  
JP2011214605
To prevent water from entering a spindle assembly mounted on various equipment.The spindle assembly is configured so that spindle housing 21 is disposed with water/air separator 25 between air supply port 230 and air bearing communicatio...  
JP2011208724
To provide a static pressre journal bearing spindle having high rotating accuracy preventing transmission of the heat generated in a motor or the like to a rotating table on a side opposite to the motor through a spindle, preventing ther...  
JP2011202555
To provide a vacuum pump preventing the unstable generation of a high-level signal and a low-level signal during operation of the pump.This vacuum pump includes: a sensor target provided integrally with a rotor; an inductance type rotary...  
JP2011190837
To provide a vibration damping control mechanism capable of reducing or suppressing the swing or vibration of a superconducting magnetic bearing and magnetic levitation device by actively controlling the swing or the vibration.This vibra...  

Matches 851 - 900 out of 5,177