Special magnetic fluid polishing equipment

The invention provides a special magnetic fluid polishing device which is used for machining an inner hole of a capillary metal pipe and comprises a supporting frame, a polishing device and a polishing device. The central driving assembly is arranged on the supporting frame; the magnetic field assembly is provided with a machining hole used for containing the capillary metal pipe, and the magnetic field assembly is arranged on the supporting frame and is driven by the center driving assembly to rotate; and the fixing structure is arranged on the supporting frame and used for fixing the capillary metal pipe. By arranging the center driving assembly, the at least one magnetic field assembly and the fixing structure, the magnetic field assembly is driven by the center driving assembly to form a rotating magnetic field, magnetic fluid in the capillary metal pipe generates rheology in the rotating magnetic field, radial force on the inner hole wall is formed, and the fixing structure has the fixing effect on the c