| 摘要 |
PURPOSE:To improve the work efficiency and the productivity by using an electromagnet so a to apply an external magnetic field to a magnetized material so as to provide a magnetic force and parting an iron core from the magnetized material. CONSTITUTION:An advance/retreat drive means 9 is connected to an iron core 5 of each electromagnet 3 so as to approach the iron core 5 or to part it to/ from a magnetic electronic component (a). Thus, when an external magnetic field is applied to the magnetic electronic component (a), the iron core 5 is approached and the iron core 5 is retreated after magnetization to avoid adverse effect due to residual magnetism. Thus, the magnetic force and the magnetic characteristic or the like are measured continuously without moving the magnetic electronic component (a), the work efficiency and the productivity are improved to reduce the manufacturing cost. |
