| 摘要 |
PURPOSE:To obtain a multipolar magnet of polar orientation magnetization by causing the projected portions of the uneven yoke of a magnetizer which are formed at a same pitch to abut on both opposed surfaces of a molded form made of a magnet material with a half pitch shifted, allowing a magnetic flux to flow to apply a pseudo- polar orientation, and thereafter applying magnetization of alternating polarities to the portion on which the projected portion of either surface wave abutting. CONSTITUTION:When pole pieces 1, 1' are excited, the magnetic flux phi generated by this obliquely crosses a molded form 20 from a projected portion 5A of the outer pole 3 and enters a projected portion 7A of the opposite inner pole 6, and returns to the pole pieces 1, 1'. By this, a pseudo-polar orientation is applied to the molded form 20. Then, the magnetizing poles 11, 12 of a magnetizer is abutted on the position on which the projected portion of either surface of the molded form 20, for instance, the projected portion 5A of the outer surface wave abutting. And, if a current is caused to flow through coils 13, 14 in such directions as to generate magnetic fluxes of N- and S-poles, respectively, the magnetic flux phi flows in the direction from the magnetizing pole 11 to the magnetizing pole 12, performing polar orientation magnetization of only one surface. |
