Magnetostrictive polishing device of double-rod structure

The invention provides a magnetostrictive polishing device of a double-rod structure. The device comprises a polishing head, an octagonal magnetic yoke, magnetostrictive rods, a rod-shaped magnetic yoke, a coil and a base. The two magnetostrictive rods are fixed into grooves in the two sides of the base respectively through bosses on the lower portions. The rod-shaped magnetic yoke is fixed into a groove in the middle of the base through a boss on the lower portion. The two magnetostrictive rods are fixed into grooves in the two sides of the bottom end of the octagonal magnetic yoke respectively through bosses on the upper portions. The rod-shape magnetic yoke is fixed into a groove in the middle of the bottom end of the octagonal magnetic yoke through a boss on the upper portion. A shaft at the bottom of the polishing head is fixed into a hole in the end of the octagonal magnetic yoke through threaded connection. The magnetostrictive polishing device has the advantages of being small in size, simple in struc