脈衝電壓對電化學加工精度之影響

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姓名

李秉錡(Ping-Chi Lee) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

脈衝電壓對電化學加工精度之影響

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摘要(中)

摘要
近年來微電化學加工的應用在電化學加工過程中扮演著非常重要的角色，若在微電化學加工系統中施以極短的脈衝電壓，藉著金屬與電解液界面上的電雙層電容器的充電行為，能夠將電化學反應侷限於電極間隙較小的區域，亦即電化學鑽孔加工中的鑽孔區。除了能提高加工精確度之外，對於加工效率的提升也有相當大的幫助。本文即利用電雙層電容器的充電行為，來模擬電化學加工後的電位分佈與工件外型，由此來觀察脈衝電壓對電化學加工的影響，發現到若減少脈衝期間或脈衝期間可以降低過切量的發生，進而提升加工的精確度。

摘要(英)

ABSTRACT
Electrochemical micromachining is becoming more and more important in the field of electrochemical machining in recent years. By applying ultra-short pulse voltage in electrochemical machining systems, electrical reactions can be confined to electrode regions in close proximity because of the double layer charging on the metal/electrolyte interface. Therefore, the precision can be increased as well as the efficiency of machining. This article simulated the double layer charging in electrochemical micromachining by using ultra-short pulse voltage, and the influence of pulse voltage would be also discussed.

關鍵字(中)

★ 微電化學加工
★ 電雙層
★ 電雙層充電行為

關鍵字(英)

★ electric double layer
★ electrochemical micromachining
★ double layer charging

論文目次

目錄
中文摘要…………………………………………………………………Ⅰ
英文摘要…………………………………………………………………Ⅱ
目錄………………………………………………………………………Ⅲ
表目錄…………………………………………………………………Ⅴ
圖目錄……………………………………………………………………Ⅵ
第一章緒論……………………………………………………………1
1-1 前言………………………………………………………..1
1-2 文獻回顧…………………………………………………..2
1-3 研究目的…………………………………………………..5
第二章電雙層理論……………………………………………………….6
2-1 電極的電容值與電荷…….………………………………6
2-2 電雙層的基本觀念……………………………………….7
2-3 電雙層結構的理論模型………………………………..10
2-4 等效電路……………………………………………….12
第三章微電化學加工之數值模擬模式………………………………15
3-1 電場分佈與加工間隙的變化………………………….15
3-2 時間常數與電極間隙的關係………………………...18
第四章數值方法……………………………………………………21
4-1 體適合法…..……..…………………………………..21
4-2 工件外型預估的計算流程…………………………..23
第五章結果與討論……………………………………………….25
5-1 脈衝期間的影響………………………..……..…….26
5-2 刀具進給速率的影響………...……………………..28
5-3 加工電位的影響……………...……………………..29
5-4 脈衝週期的影響………...…………………………..30
5-5 有無脈衝電壓的比較..……..………….…………...31
第六章結論與未來展望……………………………………………….32
參考文獻…………………………………………………………………35

參考文獻

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指導教授

洪勵吾(Lih-Wu Hourng)

審核日期

2006-7-25

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