| dc.description.abstract | The normal vibration directions of vibration-assisted magnetic abrasive finishing are all parallel or perpendicular to the surface of workpiece. Its shortcomings are easily lead to more scratches on the surface, and difficult to obtain mirror effect.
This study break through previous studies, design a mechanism of two-dimensional (XY plane) vibration assisted to magnetic abrasive finishing. After a series of experiments, we get a better surface quality and enhanced efficiency compared to non-vibrational assisted magnetic abrasive finishing. Taguchi experiment verifies that, the best parameters which improve surface roughness most is: working gap 1mm, SiC weight of 1g, steel weight 1.5g, motor oil weight 3g, platform rotational speed 1000rpm, SiC mesh # 8000, steel mesh # 120, magnet pole rotational speed 500rpm (A1B1C2D3E3F3G3H2).
The experiments proved that vibration-assisted magnetic abrasive finishing method in the best parameter combinations, can effectively improve the stainless steel surface roughness from Ra0.13μm to 0.03μm within 5 minutes, improvement rate 77%. After finishing for 25 minutes, the surface roughness is down to Ra0.01μm, the surface improvement rate increase to 92.3%. Without the assisted vibration, after finishing 5 minutes the roughness is Ra0.05μm, the improvement rate is only 61.54%. This proves that two-dimensional vibration assisted magnetic abrasive finishing method can save processing time and can effectively improve the finishinging efficiency and then save the cost of process.
Through the statistical analysis, we have a non-linear regression model, and then use a variety of test, analysis and evaluation, getting that the interactions between parameters are not obvious, and the model have significant prediction ability.
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