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Title:
ASSEMBLY METHOD FOR SUPERCONDCTIVE BEARING DEVICE
Document Type and Number:
Japanese Patent JPH0681844
Kind Code:
A
Abstract:

PURPOSE: To carry out high speed rotation of a rotary unit by suppressing generation of deflection of the rotary unit, and stably supporting it in a noncontact condition, at the time of operating a built superconductive bearing device.

CONSTITUTION: A circular hole 20 is concentrically formed with a permanent magnet 7 in a disk 5 of fixing the annular permanent magnet 7. The disk 5 is arranged relating to a superconductor part 3 with a space provided in its axial direction so that the circular hole 20 is placed concentrically to the superconductor part 3. A superconductor 10 of the annular superconductor part 3 is magnetic field-cooled by a magnetic field of the permanent magnet 7 and left as held in a superconductive condition. Under this condition, the disk 5 is rotated about the center of the superconductor part 3. Deflection in a radial direction in an internal peripheral surface of the circular hole 20, at the time of rotating the disk 5, is measured to find out the center of its rotation. A rotary unit insertion hole 23, having a diameter larger than the circular hole 20 and including it, is formed with this center of rotation serving as the center. A rotary unit is inserted and fixed to the disk 5 so as to be concentrical with the rotary unit insertion hole 23.


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Inventors:
TAKAHATA RYOICHI
KAMIYAMA HIROTOMO
Application Number:
JP23451092A
Publication Date:
March 22, 1994
Filing Date:
September 02, 1992
Export Citation:
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Assignee:
KOYO SEIKO CO
International Classes:
F16C32/04; H02J15/00; (IPC1-7): F16C32/04
Attorney, Agent or Firm:
Eisuke Kishimoto (3 others)