研究生: |
蔡岳龍 Yueh-lung Tsai |
---|---|
論文名稱: |
影像處理系統輔助微銑刀銑削黃銅之磨耗檢測 An image processing system for wear inspection of a micro-mill for milling brass |
指導教授: |
修芳仲
Fang-Jung Shiou |
口試委員: |
曾垂拱
Chwei-Goong Tseng 李維楨 Wei-chen Lee |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2009 |
畢業學年度: | 97 |
語文別: | 中文 |
論文頁數: | 87 |
中文關鍵詞: | 微銑削 、刀腹磨耗 、磨耗面積 、影像處理量測 、多值化 |
外文關鍵詞: | Micro-mill, flank wear, wear area, image processing measurement, moment-preserving method |
相關次數: | 點閱:537 下載:1 |
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本研究目的以直徑0.5mm微銑刀經銑削黃銅後的加工表面粗糙度為最小做品質特性,以田口實驗分析來得到最佳銑削參數。並以最佳參數銑削黃銅,探討微銑刀之磨耗行為。本研究亦開發一微銑刀之磨耗量測系統,量測系統乃藉由工具顯微鏡搭配CCD影像處理系統,並結合PC撰寫分析軟體,計算出刀腹之磨耗面積,找出加工面積與刀腹磨耗面積之關係,建立一磨耗曲線。
本研究首先完成微銑刀夾具之設計與製造,可將銑刀刀腹面旋轉呈水平狀態,以便量測其真實磨耗面積。另外,藉由控制工具顯微鏡本身的同軸光源強度,可清楚顯示出微銑刀刀腹面之特徵,以便於進行影像處理與分析。在影像處理方面,本研究使用National Instruments公司提供的LabVIEW 8.2.1程式開發軟體撰寫一影像處理量測系統介面,將影像做濾波、多值化等處理,以計算微銑刀的實際刀腹磨耗面積。
由田口L9的直交表實驗後,可以得知最佳微銑切黃銅之參數組合為:刀間距0.015 mm、主軸轉速60,000 rpm、進給量200 mm/min與每次切深0.036 mm。另外,為了分析微銑刀銑削壽命,本研究以此最佳參數來銑削固定體積後,輔以影像處理量測系統來建立刀腹磨耗壽命曲線圖。
The objective of this research is to determine the optimal combination of micro-milling parameters for milling brass using Taguchi’s experimental method, so that the surface roughness is minimal. An image processing measurement system used to measure of flank wear area of a micro-mill with diameters of 0.5 mm has also been developed by integrating a CCD camera with a toolmaker microscope and a PC. The design and manufacture of a micro-mill holder was first accomplished in this study. By controlling adequately the illumination of the toolmaker microscope using the coaxial lighting device, a good flank image of a micro-mill was obtained, which was clamped in the micro-mill holder and adjusted to horizontal position. An image processing software, written with Labview language, was also developed to carry out the image preprocessing, such as filtering, moment-preserving method, calculation of the wear area, etc. Based on the Taguchi’s L9 matrix experimental results, the analysis of variation (ANOVA), the optimal micro-milling parameters on milling the brass are the combination of the stepover of 0.015 mm, spindle speed of 60,000 rpm, feed of 200 mm/min,and depth of cut of 0.036 mm. Applying the optimal micro-milling parameters to mill the brass under constant material removal rate, a tool wear curve of a micro-mill was constructed by measuring the wear area of the micro-mill using the developed image processing measurement system.
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