変動磁場を利用した超精密磁気研磨法に関する研究

<p>The magnetic abrasive finishing (MAF) process is one of the ultra-precise surface finishing processes, but the traditional MAF process will reduce the finishing efficiency due to abrasive wear during processing. Therefore, in order to improve the finishing efficiency and surface quality, we proposed the MAF process using an alternating magnetic field. The effectiveness of this method has been confirmed in previous studies. However, during the fluctuation of the magnetic cluster, due to changes in its angle to the workpiece and the strength of the magnetic field, it will cause changes in the finishing force, which will affect the material removal. Therefore, in order to further improve the finishing efficiency, this study used full-wave rectified current (F-AC) to change the fluctuation behavior of the magnetic cluster. Specifically, the effect of changing the current waveform on the fluctuation behavior of the magnetic cluster is observed. Simultaneously, the effects of current waveform changes on finishing characteristics are analyzed in combination with experiments. As a result, using F-AC can make the fluctuation range of the magnetic cluster smaller, and the average finishing force can be improved. In addition, F-AC is very helpful to improve the finishing efficiency when smaller magnetic particles are used.</p>