Study of internal magnetic field-assisted machining process by the application of an alternating magnetic field and magnetized anisotropic tools

—Effects of magnetizing characteristics of magnetic pin tool on its behavior—

Abstract

The internal magnetic field-assisted machining process can be applied to inside surface finishing, such as in various types of long slender tubes and bent tubes, as lines of magnetic force can easily penetrate nonmagnetic materials. The behaviors of the magnetic tool are greatly influenced by the magnetizing characteristics of the magnetic tool material, the type of magnetic field, and its strength. This report describes a new internal magnetic field-assisted finishing process that uses both an alternating magnetic field and magnetic pin tools. From the experimental and analytical results, the relationship was examined between the magnetizing characteristics of the magnetic pin tool and the machining behaviors of the magnetic pin tools. Moreover, a comparative study of the behaviors of the magnet pin tools produced with SUS304 magnetic pin tool and a rare earth permanent magnet was performed.