| 摘要 |
PURPOSE:To increasing the magnetizing width of a yoke and to enable accurate magnetization of N- and S-poles by forming grooves perpendicularly crossing at the center on the end surface of a cylinder, and forming the groove in a narrow slit on the surface but wider than the slit groove in the inner surface. CONSTITUTION:A magnetizing yoke 10' is formed at an equal interval with grooves 13' perpendicularly crossing at the center on the end surface 12' of a cylinder 11' formed of a ferromagnetic material which has a circular hole 15 at the center, formed on the surface of the end surface 12' of the groove 13' in a narrow slit groove 13'a, and formed in the inner surface in a groove 13' for mounting an energizing coil wider than the groove 13'a. In this manner, even when the exciting coil is not correctly wound, no irregularity occurs in the magnetization of the boundary between N-poles and S-poles, and the magnetizing width can be increased. |
