| 研究生: |
許立新 Hsu, Li-Hsin |
|---|---|
| 論文名稱: |
波動切削力模式及其在超音波振動輔助鑽削之應用 Force Modeling of Wave Cutting and Its Application in Ultrasonic Vibration Assisted Drilling |
| 指導教授: |
王俊志
Wang, Jiunn-Jyh Junz |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 論文出版年: | 2023 |
| 畢業學年度: | 111 |
| 語文別: | 中文 |
| 論文頁數: | 74 |
| 中文關鍵詞: | 超音波振動輔助鑽削 、波動正交切削力模式 、剪犁效應鑽削力模式 、抹壓力 、製程最佳化 |
| 外文關鍵詞: | Ultrasonic vibration-assisted drilling, Force Modeling of wave cutting, Dual-mechanism Global Cutting Constant, Wiping force, Process optimization |
| 相關次數: | 點閱:69 下載:0 |
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本文目的在於建立波動切削力模式,並將其應用於超音波振動輔助鑽削力之預測。首先,以零階剪犁切削模式為基礎,建立波動正交切削在正餘隙角狀態之剪切與犁切力模式,並考慮在負餘隙角狀態,刀腹與工件干涉時產生之抹壓機制與抹壓力模式,會發現剪切係數隨等效刀傾角改變,因而建立剪切係數與等效刀傾角之一階模式。針對刀腹動態干涉產生之抹壓效應,本文建立抹壓力與降伏強度及抹壓面積之關係式。而波動切削力模式之驗證,在於利用快削黃銅進行不同切屑厚度的波動正交切削實驗;先以穩態切削實驗求得剪犁切削常數,再透過波動切削實驗求一階剪切係數及抹壓常數;以修正過後的切削力模式預測不同切入角、未變形切屑厚度之波動正交切削力,會發現水平方向與垂直方向之模式平均力預測與實驗誤差分別低於19.7%與17.3%。觀察實驗與模擬結果得知,切入角越大之垂直方向平均力越大,但水平方向平均力越小,故推論原因,其一為刀具波動導致切向剪切力在水平分力變小,而在垂直分力變大;其二則是因切入角越大抹壓力越大,導致抹壓力於水平力變小,垂直力變大。
接著,將波動正交切削力模式應用至超音波振動輔助鑽削力模式,以鋁合金進行不同每刃進給之鑽削實驗,再由實驗量測平均鑽削力可獲得一階鑽削係數。以修正過後之鑽削力模式來預測不同轉速與每刃進給之超音波振動輔助平均鑽削力,結果顯示,平均總扭矩與實驗值誤差低於10.6%;平均總推力之預測與實驗值誤差低於18.4%。故由實驗與模擬結果得知,切入角越大,平均總扭矩越小而平均總推力越大。最後,本文以鎳基超合金來進行超音波振動輔助與傳統鑽削之擴孔實驗;探討主軸轉速、每刃進給與超音波功率對孔壁表面粗糙度與孔徑精度的影響,並以田口品質設計法找出最佳製程參數。將最佳化參數驗證實驗與9組田口實驗之總平均相比,孔壁表面粗糙度提升45.4%,孔徑精度提升49.8%。
This study aims to create a force modeling of wave orthogonal cutting for predicting forces in UVAD. It develops a model for both positive and negative rake angles, considering tool-workpiece interaction. Validation involves obtaining cutting coefficients and constants through experiments with varying chip thickness. The model predicts forces with errors below 19.7% horizontally and 17.3% vertically. The model is extended to UVAD force prediction, using drilling coefficients from experiments with varying feed per tooth. The predicted average cutting forces have errors below 10.6% for torque and 18.4% for thrust. Larger penetration angles result in lower torque but higher thrust. Finally, hole enlargement experiments on a nickel-based superalloy using UVAD investigate the impact of spindle speed, feed, and ultrasonic power on hole quality. Optimal parameters, identified through Taguchi method, enhance hole surface by 45.4% and diameter accuracy by 49.8% compared to validation experiments.
[1] H. Ernst and M. E. Merchant, Chip formation, friction and finish. Cincinnati milling machine Company Cincinnati, 1941.
[2] M. Merchant and N. Zlatin, "Nomographs for analysis of metal-cutting processes," Mech. Eng, vol. 67, no. 11, pp. 737-742, 1945.
[3] M. E. Merchant, "Mechanics of the metal cutting process. I. Orthogonal cutting and a type 2 chip," Journal of applied physics, vol. 16, no. 5, pp. 267-275, 1945.
[4] G. Stabler, "The fundamental geometry of cutting tools," Proceedings of the Institution of Mechanical Engineers, vol. 165, no. 1, pp. 14-26, 1951.
[5] S. Kobayashi and E. Thomsen, "Some observations on the shearing process in metal cutting," Journal of Engineering for industry, vol. 81, no. 3, pp. 251-262, 1959.
[6] P. Albrecht, "New developments in the theory of the metal-cutting process: part I. The ploughing process in metal cutting," 1960.
[7] D. J. Waldorf, R. E. DeVor, and S. G. Kapoor, "A slip-line field for ploughing during orthogonal cutting," 1998.
[8] D. J. Waldorf, "A simplified model for ploughing forces in turning," Journal of manufacturing processes, vol. 8, no. 2, pp. 76-82, 2006.
[9] F. Koenigsberger and A. Sabberwal, "An investigation into the cutting force pulsations during milling operations," International Journal of Machine Tool Design and Research, vol. 1, no. 1-2, pp. 15-33, 1961.
[10] E. Armarego and R. Brown, "The Machining of Metals, Prentice-Hall Inc," New Jersy, 1969.
[11] J. Tlusty, "Dynamics of cutting forces in end milling," Ann CIRP, vol. 24, no. 1, pp. 21-25, 1975.
[12] W. Kline, R. DeVor, and J. Lindberg, "The prediction of cutting forces in end milling with application to cornering cuts," International Journal of Machine Tool Design and Research, vol. 22, no. 1, pp. 7-22, 1982.
[13] J.-J. J. Wang and C. Zheng, "An analytical force model with shearing and ploughing mechanisms for end milling," International Journal of Machine Tools and Manufacture, vol. 42, no. 7, pp. 761-771, 2002.
[14] I. Yellowley, "Observations on the mean values of forces, torque and specific power in the peripheral milling process," International Journal of Machine Tool Design and Research, vol. 25, no. 4, pp. 337-346, 1985.
[15] E. Armarego, "Practical implications of classical thin shear zone cutting analysis," in UNESCO-CIRP Seminar on Manuf. Tech. Singapore, 1982, vol. 1.
[16] E. Armarego and R. Whitfield, "Computer based modelling of popular machining operations for force and power prediction," Cirp Annals, vol. 34, no. 1, pp. 65-69, 1985.
[17] E. Budak, Y. Altintas, and E. Armarego, "Prediction of milling force coefficients from orthogonal cutting data," 1996.
[18] J.-J. J. Wang, S. Y. Liang, and W. J. Book, "Convolution analysis of milling force pulsation," 1994.
[19] J.-J. Junz Wang and C. Zheng, "Online identification of shearing and plowing constants in end milling," J. Manuf. Sci. Eng., vol. 125, no. 1, pp. 57-64, 2003.
[20] J. J. Wang and H. Chang, "Extracting cutting constants via harmonic force components for a general helical end mill," The International Journal of Advanced Manufacturing Technology, vol. 24, pp. 415-424, 2004.
[21] C. Oxford Jr, "On the drilling of metals: 1—Basic mechanics of the process," Transactions of the American Society of Mechanical Engineers, vol. 77, no. 2, pp. 103-111, 1955.
[22] M. Shaw and C. Oxford Jr, "On the Drilling of Metals: 2—The Torque and Thrust in Drilling," Transactions of the American Society of Mechanical Engineers, vol. 79, no. 1, pp. 139-147, 1957.
[23] D. Galloway, "Some experiments on the influence of various factors on drill performance," Transactions of the American Society of Mechanical Engineers, vol. 79, no. 2, pp. 191-224, 1957.
[24] G. Micheletti and R. Levi, "The effect of several parameters on twist drill performance," in Advances in Machine Tool Design and Research 1967: Elsevier, 1968, pp. 863-877.
[25] E. Armarego and C. Cheng, "Drilling with flat rake face and conventional twist drills—I. theoretical investigation," International Journal of Machine Tool Design and Research, vol. 12, no. 1, pp. 17-35, 1972.
[26] P. Legge, "Ultrasonic drilling of ceramics," Ind. Dia. Rev., vol. 24, no. 278, p. 20, 1964.
[27] R. C. Skelton, "Turning with an oscillating tool," International Journal of Machine Tool Design and Research, vol. 8, no. 4, pp. 239-259, 1968.
[28] E. Shamoto and T. Moriwaki, "Study on elliptical vibration cutting," CIRP annals, vol. 43, no. 1, pp. 35-38, 1994.
[29] Z. Yang, L. Zhu, G. Zhang, C. Ni, and B. Lin, "Review of ultrasonic vibration-assisted machining in advanced materials," International Journal of Machine Tools and Manufacture, vol. 156, p. 103594, 2020.
[30] R. Neugebauer and A. Stoll, "Ultrasonic application in drilling," Journal of materials processing technology, vol. 149, no. 1-3, pp. 633-639, 2004.
[31] S. Chen, P. Zou, H. Wu, D. Kang, and W. Wang, "Mechanism of chip formation in ultrasonic vibration drilling and experimental research," Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 233, no. 15, pp. 5214-5226, 2019.
[32] S. S. Chang and G. M. Bone, "Burr size reduction in drilling by ultrasonic assistance," Robotics and computer-integrated manufacturing, vol. 21, no. 4-5, pp. 442-450, 2005.
[33] J. Mann, C. Saldana, Y. Guo, H. Yeung, W. Compton, and S. Chandrasekar, "Effects of controlled modulation on surface textures in deep-hole drilling," SAE International Journal of Materials and Manufacturing, vol. 6, no. 1, pp. 24-32, 2013.
[34] B. Valid, P. Mehbudi, A. Javad, Z. Erfan, A. D. S. Ahmed and A. Hamouda, "An optimization technique on ultrasonic and cutting parameters for drilling and deep drilling of nickel-based high-strength Inconel 738LC superalloy with deeper and higher hole quality," Int J Adv Manuf Technol, vol. 5, no. 8, 2015.
[35] H. Paktinat and S. Amini, "Ultrasonic assistance in drilling: FEM analysis and experimental approaches," Int J Adv Manuf Technol, vol. 92, pp. 2653-2665, 2017.
[36] G. Jian and J. Xiaoliang, "Effects of Ultrasonic Vibration Assistance on Chip Formation Mechanism in Cutting of Ti–6Al–4V," Journal of Manufacturing Science and Engineering, vol. 141, no. 121007-1, 2019.
[37] 安木凡, "超音波振動輔助鑽削之運動學分析與切屑成型機制之探討," 碩士, 機械工程學系, 國立成功大學, 台南市, 2021.
[38] 李漢勇, "超音波振動輔助鑽削之機械式力學模式," 碩士, 機械工程學系, 國立成功大學, 台南市, 2022.
[39] Shaw, C.Milton, and J. O. Cookson. Metal cutting principles. Vol. 2. No. 3. New York: Oxford university press, 2005.
[40] 高崇基, "考慮排屑力影響之鑽削力解析模型," 碩士, 機械工程學系, 國立成功大學, 台南市, 2020.
校內:2028-08-27公開