Performance evaluation of superconductive-assisted machining (SUAM) with superconducting tape and two permanent magnets

Abstract

In this study, the repulsive force causing magnetic levitation for superconductive-assisted machining (SUAM) is calculated using the finite element method. Although bulk superconductors have been used for SUAM, here, we propose a magnetic levitation tool that uses superconducting tape. To obtain a stronger repulsive force, various models of a SUAM are designed and calculated. The results show that a strong repulsive force can be obtained by using two permanent magnets. In addition, even if the superconducting tape is rotated during stacking due to stacking errors, the repulsive force is not affected, indicating that there is no need to optimize the stacking method. Therefore, we expect that increasing the number of layers will generate a repulsive force that is greater than that obtained with bulk superconductors.