臺灣博碩士論文加值系統

本研究主要針對帶鋸機的結構分析與振動控制，利用有限元素模擬分析與暫態響應實驗之結果比較，找出容易引起帶鋸機振動之結構，再利用尺寸之修改找出降低振動之方向。本文由靜態敲擊實驗的結果可知，從多個不同敲擊點進行實驗，其暫態響應行為都在特定幾個頻率會出現，而頻率較高之液壓雙柱為容易造成結構的激振，而再利用有限元素軟體Ansys Workbench進行模擬與實際實驗數據相互比對其正確性。從模態響應分析上三大部份中也同樣顯示出說液壓雙柱之結構是為不穩定的，容易使帶鋸機在切削上能夠穩定且不易造成結構上的共振狀態，在頻率中出現會影響切削之響應，其頻率為較易影響切削時振動之發生要素。以有限元素模擬分析結果可得在三種不同形式之結構修改下，是同長度而改變寬度之矩形H組頻率上結構振動特性為較高，以這三部分之結構模擬分析結果比較中，可以知道最適合之結構型態H型長度而改變寬度之矩形，此結構型態較能有效的降低結構在切削時產生倍頻振動，並且此結構為Y軸向補強結構，因此可以判定說在Y軸部分有可能是造成的結構振動為影響之主因，然而修改尺寸後結構共振之差異不大，但能可以從中得知往後可修改之方向，為國產帶鋸機鋸削穩定性設計提供目標依據。

This study is focuses on structural analysis of band saw machine and vibration control, used of finite element analysis and transient response of the experimental results, find out the band saw machine vibration prone structure, reuse, reduce the size of the change to identify the direction of vibration .
This article struck by the static experimental results, the hit points from many different experiments, the transient response behavior occurs in a specific number of frequencies, while the higher frequency of double column is likely to cause the hydraulic structure of excitation.
Then re-use finite element software Ansys Workbench simulation and actual experimental data with each other than its accuracy, Modal response analysis from the three parts also show that in the two-pillar structure of hydraulic pressure is unstable, easily cutting band saw machine is stable and not easily able to create the structure of the resonance states appear in the frequency will affect the cutting of the response, its frequency is easier to influence the occurrence of vibration of cutting elements.
The finite element simulation results can be obtained in three different forms of structural modifications, the same length and width of the rectangle to change the frequency on the H group of the lowest vibration characteristics to simulate the three-part analysis of the structural comparison, and know the most H-type pattern for the length of the structure to change the width of the rectangle, this structure forms a more effective in reducing the vibration of the structure in the cutting, because the Y axis of this structure is reinforced structure, it can determine that some of them might in the Y-axis is caused by the vibration of the main reasons for the impact, however, modify the size of the differences after the resonance is not, but could be back from that direction can be modified for the domestic stability of band sawing machine designed to provide objective basis.

目錄
中文摘要 ………………………………………………………….. i
英文摘要 ………………………………………………………….. ii
致謝 ………………………………………………………….. iv
目錄 ………………………………………………………….. v
表目錄 ………………………………………………………….. viii
圖目錄 ………………………………………………………….. x
第一章 前言…………………………………………………….. 1
1.1 研究背景……………………………………………….. 1
1.2 研究動機與目的……………………………………….. 2
1.3 文獻回顧……………………………………………….. 3
1.3.1 鋸帶切削之研究……………………………………….. 3
1.3.2 整機結構之研究……………………………………….. 5
1.3.3 有限元素之研究……………………………………….. 5
1.4 論文架構……………………………………………….. 7
第二章 理論基礎……………………………………………….. 8
2.1 自然頻率……………………………………………….. 8
2.2 結構振動之類型……………………………………….. 11
2.2.1 自由振動理論………………………………………….. 12
2.2.2 強制式振動……………………………………………. 16
2.2.3 自激式振動……………………………………………. 17
2.3 有限元素法……………………………………………. 20
第三章 實驗與模擬方法………………………………………. 23
3.1 靜態敲擊實驗儀器設備與配置………………………. 24
3.2 敲擊實驗方法與步驟…………………………………. 28
3.3 各別結構之模擬………………………………………. 31
3.4 結構修正之模擬分析…………………………………. 36
3.4.1 模擬分析之參數條件規劃……………………………. 36
第四章 靜態敲擊試驗與靜態結構分析比較…………………. 40
4.1 暫態響應分析…………………………………………. 40
4.2 模態響應分析…………………………………………. 43
4.2.1 整機結構之模態………………………………………. 44
4.2.2 馬達與雙輪結構之模態………………………………. 47
4.2.3 液壓雙柱結構之模態…………………………………. 49
4.2.4 導臂結構之模態………………………………………. 52
4.3 結果與討論……………………………………………. 55
第五章 結構改善分析…………………………………………. 56
5.1 結構修正第一部份……………………………………. 57
5.2 結構修正第二部份…………………………………….. 62
5.3 結構修正第三部份…………….………………………. 66
5.4 結果與討論………………………….…………………. 71
第六章 結論…………………………………….………………. 72
6-1 結論………………………………….…………………. 72
6-2 建議………………………………….…………………. 73
參考文獻……………………………………………….…………………. 74
附錄……………………………………………….………………………. 79
英文論文大綱
作者簡歷

[1]李新和，“雙金屬帶鋸條疲勞強度分析與計算”，中國科學院上海冶金研究所，材料物理與化學(專業) 博士論文， 2000。
[2]程廉貴，“帶鋸條使用壽命的因素分析”， Analysis of the Service Life Factor for Band Saw Blade，期刊-設備管理與維修PLANT MAINTENANCE ENGINEERING， 2005年04期，114021.
[3]張鎔崴，“工具機及主軸系統結構分析與振動量測實務”，國立虎尾科技大學機械與機電工程研究所，碩士論文，2009。
[4]詹嵐喬，“工具機整機結構有限元素分析”，財團法人精密機械研究中心，機械零組件通報，2008。
[5]Christopher J.D.,Lan Le-Ngoc,“Robust active vibration control of a bandsaw blade”,Journal of vibration and Acoustics, 2000 , Vol.122,pp.69-76.
[6]P.Gendraud,J.-C. Roux,J.-M. Bergheau,“Vibrations and stress in band saws Areview of literature for application to the case of aluminium-cutting high-speed band saws”,ELSEVIER 2003 , pp. 109-116.
[7]A.G.Ulsoy,C.D.Mote,JR.,“vibration of wide band saw blades”, Journal of Engineering for Industry,1982,Vol.104,pp.71-78.
[8]Mohammed Sarwar,Martin Persson and Hakan Hellbergh,“ Wear and failure modes in the bandsawing operation whencutting ball-bearing steel”,Wear 259,(2005) 1144-1150.
[9]M. Sarwar, M. Persson , H. Hellbergh,“Wear of the cutting edge in the bandsawing operation when cutting austenitic 17-7 stainless steel”, Wear,Vol.263,2007, pp.1438-1441.
[10]H. K. Tonshoff ,H. Hillmann-Apmann,“ Diamond tools for wire sawing metal components”, Diamond Tools for Wire Sawing Metal Components, Vol.11,2002, pp.742-748.
[11]A. Di Ilio and A. Togna,“A theoretical wear model for diamond tools in stone cutting”,International Journal of. Machine Tools and Manufacture, vol.43,2003,pp.1171-1177.
[12]S.Y.Luo ,“Characteristics of diamond sawblade wear in sawing, International Journal of Machine Tools and Manufacture”, Vol.36, 1996,pp.661-672.
[13]C.Y.Wang, R.Clausen,“Computer simulation of stone frame sawing process using diamond blades”, International Journal of Machine Tools and Manufacture,Vol.43, 2003, pp.559-572.
[14]M. Sarwar,“Application of advanced surface engineering treatments to multi-point cutting edges”, Surf. Coat. Technol., Vol. 108-109 (1998) 612-619.
[15]曾潮金，“工業用帶鋸之鋸削模式建立與驗證”，國立清華大學動力機械工程研究所，碩士論文，1995。
[16]C.D.Mote,JR.,S.NAGULESWARAN,“theoretical and experimental band saw vibrations”, Journal of Engineering for Industry,1966, pp.151-156.
[17]Lengoc L.and McCallion H.,“Wide bandsaw blade under cutting conditions: Part I: Vibration of a plate moving in its plane while subjected to tangential edge loading”, Journal of Sound and Vibration,1995, Vol. 186,pp.125-142.
[18]Lengoc L.and McCallion H.,“Wide bandsaw blade under cutting conditions: Part II: Vibration of a plate moving in its plane while subjected to tangential edge loading”, Journal of Sound and Vibration,1995, Vol. 186,pp.143-162.
[19]Lengoc L.and McCallion H.,“Wide bandsaw blade under cutting conditions: Part III: Vibration of a plate moving in its plane while subjected to tangential edge loading”, Journal of Sound and Vibration,1995, Vol. 186,pp.163-179.
[20]DOMBLESKY Josenh P., JAMES Thomas P.,WIDERA G. E. Otto,“A Cutting Rate Model for Reciprocating Sawing”, Journal of manufacturing science and engineering,2008,Vol.130,pp. 051015-1-051015-7.
[21]Tae Jo Ko and Hee Sool Kim, “Mechanistic cutting force model in band sawing”, International Journal of Machine Tools & Manufacture 39 (1999) 1185-1197.
[22]Thompson, P. J., “A Theoretical Study of the Cutting Action of Power Hacksaw Blades”,Int J. Mach Tool Des. Res. Vol. 14, pp.199-209. 1974.
[23]Ahmad, M. M., Hogan, B. and Goode, E.,“Effect of Aching Parameters and Workpiece Shape on a Bandsawing Process”,Int J. Mach. Tools Manufact, Vol. 29, No.2 , pp.173-183, 1989.
[24]J.Wang and C.D.Mote , Jr.,“Analysis Of Roller-induced Residual Stresses In Bandsaw Plates. Journal of Sound and Vibration”, 1994,Vol.175,pp.647-659.
[25]王喻民，“反應曲面法應用於鋸切參數之研究”，國立虎尾科技大學機械與機電工程研究所，碩士論文，2010。
[26]曾淵鱗，“高速內孔磨床結構動態優化設計”，中原大學機械工程研究所，碩士論文，2001。
[27]張華、郭明飛，“基於 ANSYS的平面磨床床身結構優化設計”，現代製造工程CAD、CAE、CAPP、CAM，第八期，第50-51頁，2007。
[28]Rao S.S.,“The Finite Element Method in engineering”, 智邦書局，開發圖書有限公司, 1982, pp.2.
[29]劉芳、楊慶東、劉國慶、龚國慶，“高速龍門加工中心GMC3000動態特性的有限元分析”，現代製造工程設備設計、診斷維修、再製造，第三期，第113-116頁，2007。
[30]Schmit,L.A.,“Structural Design by Systematic Synthesis”, Proceedings of the Conference on Electronic Computation, ASCE,New York ,pp.105-122.
[31]陳精一，“ANSYS振動學實務分析”，高力圖書有限公司出版，初版94年8月。
[32]王柏村，“振動學”，全華科技圖書股份有限公司，1997
[33]Saeed Moaveni，“有限元素分析:理論與應用ANSYS”，臺灣培生教育出版，2001。