Development and Implementation of Equipment on Planetary Motion Combined with Two-Dimensional Vibration-Assisted Magnetic Abrasive Finishing
| Autor: | Yi-hsun Lee, 李宜勳 |
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| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 This study develops a new surface polishing approach by combining planetary motion (PM) with two-dimensional vibration-assisted magnetic abrasive finishing (PM-2DVAMAF). Planetary motion involves both rotation and revolution, thus generating radial acceleration, which strengthens the normal force exerted on the workpiece surface, and in turn enhances the cutting power of the abrasives and their polishing performance. First, investigate adding the two-dimensional vibration-assisted influence on the processing of MAF. From experimental results, 2D VAMAF can effectively increase the polishing efficiency of MAF and improve surface quality. In addition to MAF by steel particles and SiC abrasives, dense intersecting machining paths on the workpiece are also formed under vibration assistance, thus contributing to better polishing efficiency and precision. With 5-min 2D VAMAF under optimal parameter combination, the surface roughness of a stainless steel SUS304 workpiece can be reduced from 0.13 μm to 0.03 μm, an improvement of 77%. Further discussion PM-2DVAMAF, PM results in uniform, intersecting and closely packed polishing paths, which contribute to better surface quality within a shorter processing time. Experimental results reveal that 12.5-min PM-2DVAMAF under optimal parameter combination can reduce surface roughness of a stainless steel SUS304 workpiece from 0.16 μm to 0.032 μm, an improvement of 80%. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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