臺灣博碩士論文加值系統

多點式鑽石磨削工具以熱壓燒結方式製作，設計鑽石磨粒刃邊形式點、線、面及其磨削方向與排列方式，磨削Al2O3陶瓷試片，分析其對磨削力及磨削表面粗糙度的影響，同時分析不同結合劑與鑽石磨粒，及不鏽鋼棒不同接合面結合情況。
實驗結果顯示，當鑽石磨棒以50wt% Bronze/50wt% Fe結合劑，與鑽石磨粒有較緊密的結合效果。不鏽鋼棒端面鑽孔及粗糙化，與結合劑結合效果最佳。使用多點式鑽石磨削工具磨削Al2O3陶瓷，內、外圈鑽石磨粒相對高度差0.01mm，固定外圈鑽石磨粒形式，以<100>面及{110}方向磨削，改變內圈鑽石磨粒形式，以<110>線及{100}方向磨削，所得表面粗糙度相對最小，但由耐久磨削試驗觀察，鑽石磨粒有明顯的磨平磨耗現象產生；以<100>面及{100}方向磨削，所得表面粗糙度次之；以<100>面及{110}方向磨削，所得表面粗糙度較大；以<110>線及{110}方向磨削，所得表面粗糙度相對最差。單一外圈鑽石磨削工具磨削Al2O3陶瓷，隨著切深增加，所得表面粗糙度越大，而雙圈鑽石磨削工具，在不同切深條件下，所得表面粗糙度較為穩定。

Multi-point diamond grinding tools were fabricated by hot press. The point, line and plane of diamond abrasive cutting edges and their directions and arrangements on tools were designed to grind alumina ceramic. The effects of the designed tools on the grinding force and surface roughness are studied. And the bonding conditions of metal binder for diamond grit and stainless steel rod’s interface were also investigated.
Experiment results showed that when the binder of 50wt% Bronze/50wt% Fe for diamond grinding rod was used, the resulting bonding condition between the binder and diamond particle displayed the relatively best. And drill hole and roughness treatment on stainless steel rod’s interface can produce the best bonding with binder. When a multi-point diamond grinding tool with the protrusion difference of 0.01 mm on the diamond particle of inner and outer ring and along <100> plane and {110} direction on the diamond grits of outer ring was employed, using along <100> line and {100} direction on the diamond grits of inner ring to grind alumina ceramic can obtain a relatively smallest workpiece surface roughness. However, the resulting these diamond grits observed from the durability test produced a flat wear appearance. Along <100> plane and {100} direction of diamond grits on the inner ring displayed a relatively smaller workpiece roughness, next to along <100> plane and {110} direction of diamond grits, the worst was along <110> line and {110} direction of diamond grits. For a diamond grinding tool with only a single outer ring during the grinding alumina ceramic, the workpiece roughness obtained increased with increasing of the depth of cut. Besides, using two rings of diamond tool can obtain a relatively more stable workpiece roughness under a different depth of cut.

目 錄

致謝 I
摘要 I
Abstract III
目 錄 VI
表 錄 VII
圖 錄 VIII
第一章 緒論 1
1.1 研究動機 1
1.2 文獻回顧 2
1.3 研究目的 6
1.4 本文內容 7
第二章 基礎理論 8
2.1 鑽石磨粒型態與性質 8
2.2 燒結理論 11
2.2.1 燒結現象 11
2.2.2 熱壓燒結 14
2.2.3 鑽石與金屬結合劑燒結現象 14
2.3 磨削原理 16
2.3.1 硬脆材料受壓印的特性 16
2.3.2 鑽石磨粒磨削過程 18
2.4 鑽石磨粒磨削中切刃之變化 20
第三章 實驗程序與設備 22
3.1 實驗架構與流程 22
3.2 多點式磨削工具 25
3.2.1 磨削工具幾何形狀 25
3.2.2 鑽石磨棒的磨粒形式與磨削參數 27
3.3 鑽石磨棒燒結製作 31
3.4 分析儀器及設備 35
第四章 實驗結果與討論 43
4.1 鑽石磨棒 43
4.1.1 結合劑對鑽石磨粒抓牢度影響 43
4.1.2 燒結方式對鑽石磨棒的影響 50
4.2 多點式鑽石磨削工具磨削試驗 58
4.2.1 表面粗糙度 58
4.2.2 磨削力 68
4.2.3 耐久磨削試驗 72
第五章 結論 80
參考文獻 82

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