Foreign recently developed two new types of precision grinding surface polishing method, the first method is to use magnetic fluid polishing; polishing the second method airbag.

     Principle is to use magnetic fluid polishing tool permanent magnet or an electromagnet, the magnetic fluid mixed with the abrasive tool at the end of the adsorption, polishing the surface of the workpiece. After the tool solenoid is energized, the magnetic fluid is adsorbed on the tool end of the mirror polishing process, since the shape of the magnetic fluid with the shape of the workpiece can be automatically changed, and therefore the shape of the magnet is not critical tools, easier manufacturing. In addition to the available adsorption plane magnetic fluid polishing tool, the tool may also be a rod, one end of the magnetic fluid absorption, instead of the multi-axis CNC milling cutter axis machine tools for free-form surface is polished. Magnetic fluid polishing obtain high surface quality.