| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and device for magnetizing multipole ring by which high-intensity narrow-pitch magnetization can be performed with high accuracy. SOLUTION: While a magnetic member W is rotated in a state where the member W is held by a spindle device, 1 the member W is magnetized by passing magnetic fluxes through the member W from magnetizing yokes 9 facing the front and rear surfaces of the member W. Then rotation speed and original point position of the motor 2, which rotates the spindle device 1 are detected by means of an encoder 7. The rotation speed of the motor 2 and the magnetization start position are controlled, based on the detected signals of the encoder 7. At magnetizing the member W, the magnetized intensity of the member W is detected by means of a magnetic sensor 8 and the magnetizing currents, which give the magnetic fluxes to the yokes 9 are controlled by means of a magnetization control means 14. |
