Fig. 1. Schematic diagram of the principle drum type ultrasonic magnetorheological polishing

Fig. 2. 3D model of drum ultrasonic magnetorheological polishing device

Fig. 3. 3D model of electromagnetic excitation device

Fig. 4. Magnetic circuit of three magnetic pole excitation device

Fig. 5. 2D simulation simplified model of electromagnet

Fig. 6. B-H curve of the material

Fig. 7. Post-processing results simulation

Fig. 8. Cloud image of magnetic induction intensity distribution at different pole widths

Fig. 9. Relationship between magnetic induction intensity and path position at different pole widths

Fig. 10. Cloud map of magnetic induction intensity under different current

Fig. 11. Relationship between magnetic induction intensity and path position under different excitation current

Fig. 12. Drum type ultrasonic magnetorheological compound polishing device

Fig. 13. Comparison curve between simulation value and test value of magnetic induction intensity in the same path under different current

Fig. 14. Relationship between surface roughness and its rate of change with current

Fig. 15. Surface morphology before and after polishing