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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 廖運炫(Yunn-Shiuan Liao) | |
dc.contributor.author | Kai-Chun Hsiao | en |
dc.contributor.author | 蕭凱駿 | zh_TW |
dc.date.accessioned | 2021-06-16T10:13:25Z | - |
dc.date.available | 2016-09-02 | |
dc.date.copyright | 2013-09-02 | |
dc.date.issued | 2013 | |
dc.date.submitted | 2013-08-19 | |
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Miller, 'Grinding wheel loading with and without vibration assistance,' in Proc. of the ASPE Annual Meeting, 2003, pp. 529-533. [44] 喻強、周紅生、許小芳、王歡、張華與周斌 周红生, 'ANSYS 輔助楔形超聲坡聚能器的優化設計和實驗研究,' 聲學技術, pp. 107-111, 2010. [45] 施景翔,超音波振動輔助切削之共振頻率偵測追蹤電路之研究,國立中正大學機械工程研究所,2006. [46] K.L. Kuo, 'Ultrasonic vibrating system design and tool analysis,' Transactions of Nonferrous Metals Society of China, vol. 19, pp. s225-s231, 2009. [47] N.k. Lin, 'Simulation of force output of piezo-micro-pump,' 2007. [48] E. McCulloch, 'Experimental and finite element modelling of ultrasonic cutting of food,' University of Glasgow, 2008. [49] http://www.morgan-electroceramics.com. [50] E. Brinksmeier, C. Heinzel, and M. Wittmann, 'Friction, cooling and lubrication in grinding,' CIRP Annals-Manufacturing Technology, vol. 48, pp. 581-598, 1999. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/60187 | - |
dc.description.abstract | 目前業界中不銹鋼材料的使用範圍廣泛,因其材料特性為延展性材料,在磨削加工中屬於難磨削材料,磨削常會遇到黏屑的問題,導致加工效率與品質下降。故本研究的目標為解決磨削加工黏屑問題,以提升加工品質為目的。
本研究嘗試尋求較有效且經濟實惠的方式來探討,在設備較便宜,且又能有效率的解決上述問題,本研究利用超音波的空化特性,設計製造出有效的超音波振動子,架設於現有的設備上進行磨削。本文對120號與800號砂輪進行乾磨削、濕磨削、超音波濕磨削磨削,並比較分析砂輪表面黏屑、磨削力及工件表面粗糙度之關係。 實驗結果顯示,超音波濕磨削,由於超音波於液體的空化特性能有效的去除砂輪表面黏屑,砂輪表面的黏屑量和磨削力低於乾磨削和濕磨削。而工件的表面粗糙度,由砂輪表面黏屑狀況而決定,號數高的砂輪孔隙較小,切屑黏附於切刃上,表面粗糙度隨著磨削次數增加而變差,精磨削的表面粗糙度改善21%。在粗磨削修整週期,超音波濕磨削粗比濕磨削增加切深量0.25 mm。所以超音波濕磨削可以增加磨削加工時砂輪的修整週期,提高加工效率,並獲得較平整的表面。 | zh_TW |
dc.description.abstract | Currently, the application of stainless steel is widely used in the industry. However, stainless steel is a hard grinding material because of its ductile properties. When grinding stainless steel material, the loading problem causes the decline of both efficiency and quality of processing. This research is to solve the loading problem and to improve the quality of processing.
The research attempts to seek a more effective and economic method to solve the loading problems. Under the consideration of the cost and efficiency, the vibrating system is installed on the pre-existed equipment as a relatively inexpensive solution. This research uses the ultrasonic cavitation characteristics to design and manufacture an effective ultrasonic vibrating system. The article will discuss the effect of dry grinding, wet grinding, ultrasonic wet grinding with fine and coarse grinding wheel and analyze the relationship between surface loading of grinding wheel, roughness of workpiece surface and grinding force. Experimental results show that the cavitation characteristics of ultrasonic wet grinding will effectively remove the loading of grinding wheel. The surface loading of grinding wheel and grinding force is less than dry grinding and wet grinding. The surface roughness of the workpiece will be determined by the surface loading of grinding wheel condition. Fine grinding wheel surface has smaller porosity which leads to the adhesion of chips on the cutting edge. The surface roughness of workpiece becomes worse with the grinding times increased. The surface roughness of fine grinding improves 21%. In the dressing period of coarse grinding, the ultrasonic wet grinding increases the cutting depth of 0.25 mm than the wet grinding. In conclusion, rough ultrasonic wet grinding increases the dressing period of grinding wheel and fine grinding wheel obtains more smooth surface. Both rough and fine grindings show more efficiency during the processing. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T10:13:25Z (GMT). No. of bitstreams: 1 ntu-102-R00522703-1.pdf: 6765210 bytes, checksum: cc2897801d047867723bdc69129be8b6 (MD5) Previous issue date: 2013 | en |
dc.description.tableofcontents | 目錄
誌謝 I 摘要 II Abstract III 目錄 IV 圖目錄 VII 表目錄 X 符號對照表 XI Chapter 1 緒論 1 1.1 研究背景與動機 1 1.2 文獻回顧 2 1.3 研究目的 6 1.4 本文架構 7 Chapter 2 相關理論 8 2.1 磨削原理 8 2.2 磨削中切削力和摩擦力與切屑幾何 9 2.2.1 磨削中切削力和摩擦力的分析 9 2.2.2 磨削切屑幾何 14 2.3 砂輪磨耗理論與選擇 15 2.3.1 磨損磨耗(attritious wear) 15 2.3.2 顆粒的破裂(grain fracture) 15 2.3.3 膠合破裂(bond fracture) 16 2.3.4 砂輪的特性 16 2.4 超音波空化原理及特性[41] 17 2.5 二值化理論 21 2.6 表面粗糙度的表示方法 23 2.6.1 表面組織之定義 23 2.6.1 表面粗糙度的表示法 25 Chapter 3 實驗設備與方法 29 3.1 實驗設備 29 3.2 實驗規劃 41 3.3 實驗方法 43 3.3.1 主要加工條件 43 3.3.2 實驗程序 44 Chapter 4 超音波振動子喇叭形狀設計 45 4.1 超音波喇叭形狀與空化作用之關係 45 4.2 超音波喇叭頭設計 48 Chapter 5 實驗結果與討論 58 5.1 磨削後砂輪表面黏屑狀況 58 5.1.1 比較三種磨削條件的砂輪表面 58 5.1.2 綜合討論 67 5.2 超音波對磨削力的影響 68 5.3 磨削後工件表面粗糙度 71 Chapter 6 結論與未來展望 78 6.1 結論 78 6.2 未來展望 79 參考文獻 80 | |
dc.language.iso | zh-TW | |
dc.title | 超音波振動輔助對磨削切屑黏附之影響 | zh_TW |
dc.title | Effects of Ultrasonic Vibration on Chip Adhesion in Grinding Process | en |
dc.type | Thesis | |
dc.date.schoolyear | 101-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 蔡曜陽(Yao-Yang Tsai),李貫銘(Kuan-Ming Li) | |
dc.subject.keyword | 超音波,空化作用,不銹鋼材料, | zh_TW |
dc.subject.keyword | ultrasonic,cavitation,stainless steel, | en |
dc.relation.page | 82 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2013-08-20 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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