Recently DVD(Digital Versatile Disk) has been used in many areas. This paper presents new type of rotor magnet for spindle motor in DVD. In the new type of DVD, the rotor magnet, turntable and back yoke are integrated by one body injection mold. The m...
Recently DVD(Digital Versatile Disk) has been used in many areas. This paper presents new type of rotor magnet for spindle motor in DVD. In the new type of DVD, the rotor magnet, turntable and back yoke are integrated by one body injection mold. The magnet is magnetized in the process of injection. The injection mold is designed using finite element method. And the characteristics of the rotor magnet are analysed and compared with the experiment.