臺灣博碩士論文加值系統

製造業加工的水準漸漸提高，在各行各業中所設計出來的曲面越來越複雜以及多樣化，傳統拋光僅限於平面拋光的拘束，無法對曲面有良好的拋光效果，近年來，曲面拋光技術在市場的需求，也有高度的發展，在本研究中，使用新開發的膠體磁力研磨對於模具鋼曲面的拋光，改善一般曲面拋光對於環境污染、加工成本高以及對人體有害等的缺點。本研究方法利用CNC銑床於治具上使用膠體磁粒磨料對於模具鋼曲面的拋光，使用單因子實驗法確定各參數對加工效果的影響，包括磁鐵數量、進給率、轉速、磨料比例、磨料號數、鋼砂比例、鋼砂號數等參數，探討對加工效能之優劣影響，再利用田口實驗法找出最佳化參數並計算各因子貢獻度及重要性，最後再使用最佳化參數對預測值進行驗證實驗，經由ANOVA分析得到，影響最大的實驗因子為磨料量，其貢獻值為65.07%，使用最佳化參數加工的試片表面由初始表面粗糙度Ra0.2733μm下降至Ra0.0234μm，表面粗糙度改善率為91.43%。

In the last several decades, there has been a rapid growth of mold and die industry due to the development of the manufacturing industry. But the traditional polishing is only restricted to plane polishing, which is unable to have the good polishing effect on the curved surface. In recent years, curved-surface-polishing technology in market has gathered great importance and fast development. This research is mainly to probe into the gel magnetic abrasive mixed with steel grit and silicone carbon as the abrasive media to obtain excellent polishing efficiency in the magnetic finishing with gel abrasive; not only are these abrasive media easily produced but also can reduce the cost. In this research, firstly the CNC milling machine was utilized to conduct the single-factor experiments on the curved surface of tool steels with a view to ascertaining the effects on the polishing efficiency of such working parameters as types of magnet, feeding rates, rotational speed, amounts of silicone carbon, mesh no. of silicone carbon, amounts of steel grit, and mesh no. of steel grit; then the Taguchi experimental method was employed to determine the optimal combination of working parameters and the contributions of individual factors to the polishing efficiency; and finally, by the use of optimal combination of working parameters, the polishing efficiency could be predicted in comparison with experimental data. From the results of analysis of ANOVA, the most influential factor is the amounts of silicone carbon, the contribution of which is 65.07%; and the value of surface roughness will be decreased from Ra0.2733 um. down to Ra0.0234um via the optimal combination of working parameters, the improvement of which is by 91.43%.

中文摘要 i
英文摘要 ii
誌謝 ii
目錄 iv
表目錄 vi
圖目錄 vii
符號說明 ix
第一章 緒論 1
1.1 前言 1
1.2 文獻回顧 3
1.3 研究動機與目的 5
1.4 論文架構 7
第二章 研究方法及基本原理 8
2.1導磁性高分子膠體磨料製作 8
2.2膠體磁性磨料研磨加工原理 11
2.3田口式實驗法 12
第三章 實驗設備與方法 15
3.1實驗規劃 15
3.2實驗材料 16
3.3實驗設備 18
3.4實驗方法 25
3.4.1單因子實驗法 25
3.4.2單因子實驗參數 26
3.4.3田口式實驗法參數規劃 32
第四章 結果與討論 34
4.1單因子實驗法結果 34
4.1.1 磁鐵數量對表面粗糙度之影響 34
4.1.2 轉速對表面粗糙度之影響 36
4.1.3 進給率對表面粗糙度之影響 38
4.1.4 磨料量對表面粗糙度之影響 40
4.1.5 磨料號數對表面粗糙度之影響 43
4.1.6 鋼砂量對表面粗糙度之影響 45
4.1.7 鋼砂號數對表面粗糙度之影響 47
4.2 表面粗糙度田口法實驗結果與驗證 50
4.2.1田口法實驗結果 50
4.2.2 變異數分析 54
4.2.3 最佳化參數驗證實驗結果 56
第五章 結論與未來展望 59
5.1結論 59
5.2未來展望 61
參考文獻 62
簡歷 65

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