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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/67653


    Title: 行星式運動結合二維振動輔助磁力研磨設備開發與應用;Development and Implementation of Equipment on Planetary Motion Combined with Two-Dimensional Vibration-Assisted Magnetic Abrasive Finishing
    Authors: 李宜勳;Lee,Yi-hsun
    Contributors: 機械工程學系
    Keywords: 磁力研磨;MAF
    Date: 2015-06-29
    Issue Date: 2015-07-31 01:07:05 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本研究以自行開發的新型磁力研磨法為研究主軸,應用行星式運動結合二維振動輔助磁力研磨(PM-2DVAMAF)的機制於不鏽鋼材料上進行拋光。
    首先探討二維振動輔助對於MAF的影響,以及針對各加工參數的特性進行研究。結果顯示,二維振動輔助磁力研磨(2D VAMAF)的機制可以使工件的表面與磁極的旋轉加工方向形成緻密的交叉加工痕跡,因此可以提高研磨效率與精度。實驗證明,振動輔助磁力研磨加工在最適參數組合下,能於5分鐘內有效改善不鏽鋼表面粗糙度由Ra 0.13μm改善至0.03μm,改善率達77%。
    進一步利用行星式運動結合二維振動輔助磁力研磨,其主要目的是利用行星齒輪機構自轉與公轉的特點,結合二維振動輔助,使工件表面形成高密度的交叉紋路。結果顯示,在最適當的參數組合下,能於12.5分鐘內有效改善不銹鋼表面粗糙度由Ra0.16μm降低至0.032μm,改善率為80%。
    最後探討二維振動輔助磁力研磨配合羊毛氈拋光墊,對於不鏽鋼表面粗糙度改善之情況。結果顯示,在最適當的參數組合下能在5分鐘內有效改善不銹鋼表面粗糙度由Ra0.14μm降低至0.03μm,改善率為78.57%。
    ;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%.
    Appears in Collections:[機械工程研究所] 博碩士論文

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