Abstract
This research examined an improvement of the form accuracy (Roundness) on internal magnetic field assisted finishing process using a magnetic machining jig. The rotation speed of the magnetic processing jig was set to 150min–1 and 250min–1 with SUS304 stainless steel tubing, and the finishing experiments were carried out. As the results, the roundness of inside tubing can be improved against both experiments, the processing characteristics were influenced by the rotation speed, and it was clarified that a good result was obtained in the case of 250min–1 at the rotation speed.