Abstract
The aim of this study is to propose an internal magnetic abrasive finishing process for nonferromagnetic fittings, which do not have rotational symmetry and fine finish is therefore considered difficult to achieve by conventional technology. This paper presents the finishing principle and the finishing equipment, which provides flexible motion of a finishing unit by means of a 6–axes controlled robot. The finishing experiments of SUS304 stainless steel fittings characterize the effects of the size of ferrous particles, mixed with either WA magnetic abrasive or WA abrasive, on the dynamic motion of the particles as well as the magnetic force. The material removal characteristics vary as the size of the ferrous particles affect the area of finishing and the depth of cut of the WA magnetic abrasive or WA abrasive. Accordingly, this study concludes feasibility of the process for improving the roughness and unevenness of the internal surfaces of the fittings.
