研究生: |
洪詩函 Shi-Han Hong |
---|---|
論文名稱: |
自製拋光球對STAVAX模具鋼應用於CNC車銑複合工具機表面精加工之研究 Research on the Surface Finish of STAVAX Using Homemade Polishing Ball on a CNC Turning Center |
指導教授: |
修芳仲
Fang-Jung Shiou |
口試委員: |
鍾俊輝
Chun-Hui Chung 郭俊良 Chun-Liang Kuo 吳昌謀 Chang-Mou Wu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2018 |
畢業學年度: | 106 |
語文別: | 中文 |
論文頁數: | 113 |
中文關鍵詞: | 球擠光 、球拋光 、自製拋光球 、CNC車銑複合工具機 、表面粗糙度 、STAVAX |
外文關鍵詞: | Ball burnishing, Ball polishing, Homemade polished ball, CNC turning center, Surface roughness, STAVAX |
相關次數: | 點閱:291 下載:1 |
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摘要
本研究主要探討自製拋光球對STAVAX模具鋼於CNC車銑複合工具機進行表面精加工之研究。精加工參數使用先期研究之最佳球擠光、球拋光加工參數組合,研究五種型號之自製拋光球對表面精度影響,最後將最佳參數組合應用於車銑複合製造出的試件。
本研究經由六面形作為試件的實驗結果得到Type E(磨料粒徑3 μm,濃度40%)拋光球對表面粗糙度改善值最高;而最佳球拋光順序與道次組合為:Type E(磨料粒徑3 μm,濃度40%) - Type C(磨料粒徑1 μm,濃度30%) - Type B(磨料粒徑0.3 μm,濃度20%) - Type A(磨料粒徑0.05 μm,濃度20%),可使表面粗糙度由Ra 0.22 μm改善至Ra 0.023 μm。
以六面形作為實驗試件所獲得最佳球擠光、球拋光順序與道次參數組合對車銑複合工具機製造出的凸輪、鍵槽試件進行加工應用,拋光後凸輪與鍵槽試件表面粗糙度分別由Ra0.21 μm降至Ra0.023 μm及Ra0. 206 μm降至Ra0.02 μm。
Abstract
The purpose of this research is to study the surface finishing processes on the CNC turning center for STAVAX, to improve its surface roughness. The process parameters adopted the best ball burnishing parameters and ball polishing processing parameters obtained in the previous study. This study investigated the influence of five types of homemade polishing balls on the surface roughness. The best process parameters have been applied to the produced parts on the turning center.
The process parameters based on experimental results of the hexahedron as the test piece, the Type E (particle size 3 μm, concentration 40%) polishing ball has the highest surface roughness improvement value; and the best ball polishing sequence and the pass combination are: Type E(particle size 3 μm, concentration 40%) - Type C(particle size 1μm, concentration 30%) - Type B(particle size 0.3 μm, concentration 20%) - Type A(particle size 0.05 μm, concentration 20%), which improves surface roughness from Ra 0.22 μm to Ra 0.023 μm.
By applying these suitable parameters to the cam-shaped and keyway workpiece, the surface roughness form Ra 0.21 μm to Ra 0.023 μm and Ra 0.206 μm to Ra 0.02 μm could be obtained.
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