- 學位論文
臥式帶鋸機鋸弓結構振動特性之探討
Investigation of Vibration Characteristics of Horizontal Band Saw Frame Structure
摘要
在現今高精密、高效率與高壽命是帶鋸機發展的主要趨勢，帶鋸機的振動幅度大小決定機台之精密度，所以掌握了帶鋸機的剛性與動態特性，將有助於研究結構的振動，以避免共振，提升帶鋸機之效率及壽命。 本文利用有限元素分析方法對臥式帶鋸機進行結構分析，分析自然頻率以及響應，探討結構自然頻率之模態振型與響應，結合田口方法品質設計的原理，得到最佳因子解，與分析帶鋸機的耗材部分鋸帶，此部分零件容易有應力集中，在鋸帶緊邊扭轉段與主動輪彎矩段為應力最大處，藉由分析軟體可以得知長度與圓徑對於應力關係，最後找出此分析長度與田口法因子之間的關係求得最佳的解答，做為改善帶鋸機結構基準，初步結果顯示在模態一減少48.2%振幅與模態二減少10%振幅，以及鋸弓零件減少22%的質量。
並列摘要
In the present, high precision, high cutting speed and long lifetime have become the main developing trend of band saw machine. The amplitude of vibration of the machine affects the machine accuracy. Therefore, it is important to investigate the rigidity and dynamic characteristics of the band saw machine designed in order to avoid resonance phenomena and upgrade the efficiency and lifetime of the machine. The structural analysis of a selected horizontal metal band saw machine based on 3D finite element model are conducted to obtain the structural natural frequencies and associated mode shapes, and the harmonic responses. The optimal design parameters of the band saw module based on the minimization of amplitude of lower vibration mode are also performed by the Taguchi method. The stress state into the blade is also analyzed to learn the relationship of blade length and driving wheel diameter. Finally, an improved design based on the above analysis is obtained. The preliminary results show that amplitude of vibration is reduced 48.2 % for first mode and 10 % for second mode as compared to original design.
參考文獻
延伸閱讀
- 蔣伯勳、呂宗熙、洪志維、游佳穎、李松賢、林育信（2014）。應用於外引腳黏合設備之直角座標機器人振動分析。先進工程學刊，9(3)，145-153。https://www.airitilibrary.com/Article/Detail?DocID=a0000255-201407-201409030003-201409030003-145-153
- 查國強、王能治、黃仁明（2006）。被動式吸振器應用於平面磨床集中質量參數模型之性能研究。載於中華民國振動與噪音工程學會（主編），中華民國振動與噪音工程學會論文集（頁B-11-B-20）。中華民國振動與噪音工程學會。https://www.airitilibrary.com/Article/Detail?DocID=a0000192-200606-x-2006-B-11-B-20-a
- 黃信行、黃孝祖、呂鴻猷、魏瑞昌、陳豫榮（1997）。機車傳動齒輪組振動檢測技術之研究。載於中華民國振動與噪音工程學會（主編），中華民國振動與噪音工程學會論文集（頁591-601）。中華民國振動與噪音工程學會。https://doi.org/10.30028/CSSVANNUAL.199705.0591
- Li, W., & Wei, Y. (2010). Analyses and Applications of Nonlinear Liquid Systems on Vibration Isolation. In 中華民國振動與噪音工程學會 (Ed.), 中華民國振動與噪音工程學會論文集 (pp. 293-300). 中華民國振動與噪音工程學會. https://doi.org/10.30028/CSSVANNUAL.201006.0293
- Nutakor, C., Semken, R. S., Sopanen, J., & Mikkola, A. (2015). Vibration Analysis of a Novel Stator Wheel Structure for a Direct-Drive PM Generator. Proceedings of the 14th IFToMM World Congress, (), 673-680. https://doi.org/10.6567/IFToMM.14TH.WC.OS19.012