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研究生:吳詒謀
研究生(外文):Yi-Mo Wu
論文名稱:電鍍CBN杯型砂輪磨削硬鋼之研究
論文名稱(外文):A study of the electroplated CBN cup wheels for grinding hardened steel
指導教授:羅勝益羅勝益引用關係
指導教授(外文):Shenq-Yih Luo
學位類別:碩士
校院名稱:華梵大學
系所名稱:機電工程學系博碩專班
學門:工程學門
學類:機械工程學類
論文種類:學術論文
畢業學年度:98
語文別:中文
論文頁數:82
中文關鍵詞:電鑄CBN砂輪磨削力粗糙度磨耗
外文關鍵詞:rubs and pares the strengthThe electricity casts the emery wheel of CBNroughnessroughness
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本研究之目的是使用三種不同CBN種類之杯型電鍍砂輪,立式濕磨削硬鋼SKD11試片,固定轉速及三種不同切深來進行磨削,探討磨削力、磨削比、工件表面粗糙度與砂輪磨耗等性能。
實驗結果顯示在較低切深時,使用較低強度與較不規則形狀之CBN磨粒的砂輪,所產生磨平比率較少,磨削力較低,工件粗糙度較差,磨削比較小;然而,使用較高強度與較規則形狀之CBN磨粒,產生磨粒以平化比率較大,工件粗糙度較佳,但磨削力較高,磨削比較大。當較大切深時,在較高強度之CBN磨粒砂輪,產生平化比率較大,則工件粗糙度較佳,但磨削比較小;反之,使用較低強度CBN磨粒磨削硬鋼,最終造成磨粒破裂,且鈍化比率低,導致磨削力大增,嚴重時將造成振動及異音產生,工件粗糙度惡化,而無法磨削。另外,工件表面粗糙度隨着材料去除增加而變佳,這可能因為砂輪面上有些CBN磨粒磨平,造成磨粒突出度高低差愈小,使得工件粗糙度愈來愈好,但同樣切深時,較高強度CBN比較低強度者之磨削比大,工件粗糙度較佳,磨削力愈來愈大。
The purpose of this research is to use three kinds of cup-shaped electricity of different CBN kinds to cast the emery wheel , rubing and paring hard steel SKD11 to try slice wetly, regular rotational speed and three kinds waste paring with cut coming deeply , it probes into rub not sharpening by strength , not rub not sharpening than, work piece surface roughness and emery wheel wearing and tear performance .
The experimental result shows that when using the emery wheel of the CBN grit of low intensity and more irregular form, it cuts deeply that it is lower, producing and rubbing less flat rates It is relatively low to rub the strength of paring, the roughness of the work piece is relatively bad, rub and pare smaller; But when using high strength and regular CBN grit of form relatively , produce grit with flat to take rate relatively heavy, the roughness of the work piece is relatively good, but it is relatively high to rub the strength of paring , rub and pare bigger than also. When cut greatly deeply, in the CBN grit that is relatively the high strength , produces the flat rate of melting bigger, then the roughness of the work piece is relatively good, but rub and pare it than greatly; On the contrary , when using lower intensity CBN grit to rub and pare the hard steel , causes the grit to break finally, and the passivation rate is low, result in rubbing the strength of paring to heighten , will cause vibration and different sound to produce when being serious, the roughness of the work piece worsens, but unable to rub and pare. In addition, the roughness of work piece surface is up to the material is got rid of and increases but becomes good, perhaps this, because some CBN grit rubs flat the emery wheel, cause grit stress degrees of bad and light level , make work piece to be roughness more and more kind, but
too when cutting dark, than heavy than low intensity to is it sharpen to rub CBN, CBN of high strength,, work piece roughness relatively good, it is greater and greater to rub the strength of paring.
誌謝 I
摘要 II
ABSTRACT III
目錄 V
表錄 VII
圖錄 VIII
第一章 緒論 1
1.1 前言 1
1.2 文獻回顧 3
1.3 研究目的 8
1.4 本文內容 8
第二章 理論基礎 9
2.1電鍍CBN砂輪 9
2.2磨削機構 12
2.3砂輪之磨粒狀態 14
2.4磨削力與磨粒切刃深度 15
2.5表面整合性 16
2.5.1工件表面粗糙度 17
2.5.2磨削面的損傷 19
第三章 實驗程序與設備 21
3.1實驗架構及流程 21
3.2實驗方法及步驟 23
3.3磨削條件 23
3.4 CBN磨粒與粒度 24
3.5 CBN砂輪與工具鋼SKD11材料性質 26
3.6實驗儀器及設備 28
第四章 實驗結果與討論………………………………...…………….33
4.1磨削力………………………………………………………....33
4.1.1 BBN-2磨粒….......………………………………………...………33
4.1.2 YBN-3E磨粒…………………….…………….….....…..…36
4.1.3 YBN-5E磨粒………...…………….………...………..…...38
4.1.4討論...……………………………………………...…….....41
4.2表面粗糙度…………………………………………………..43
4.2.1 BBN-2磨粒…..…….…………………………………………….53
4.2.2 YBN-3E磨粒…………………….…………….…....…...…55
4.2.3 YBN-5E磨粒………...…………….………...………....….58
4.2.4討論...………………………………………….....…….......61
4.3磨削比及CBN電鍍砂輪磨耗.….……….……..………..…….63
4.3.1磨削比………….…………………………….…...……..…63
4.3.2 CBN電鍍砂輪磨耗.….……….………..………..…...….....65
4.3.3 CBN砂輪磨削效率.…………….……….……..…...……...77
第五章 結論………………….………………………..….…..…….….79
參考文獻………………………………...…………….….….…..….….80
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