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 在機械實驗室和工業環境中都需要用數控機械來代替人做複雜的操作。銑削數控機床是一種數控機械而可以創造特殊的那一部分。現在，我們要研發的基本銑削數控機床為含有5軸的多軸 - 中心機。我們要優化一台機器，包括設計，參數，電源...方法分析的有限元分析法。在這項研究中我想比較，有和沒有延伸軸 - 4軸和5軸數控設計。
 In mechanical environment of laboratory and industrial is needed CNC machine to replace human do complex operation. Milling CNC machine is one of CNC machine, which can create special parts. Nowadays, we develop basic milling CNC machine into multi axis - center machine with 5 axes. We want to optimize a machine include design, parameter, power... One of methods analysis is Finite element analysis method. In this study, I want to build and test CNC router machine, with and without extend axis – 4-axis.By analyzing method, we know which parts need to modify, factors damage to this design. Comparison with the other geometry, the high advantage of disadvantage of each design was determined and adjusted. Build and test process will provide helpful experiments and real effects of assembling.One CNC router always operates in high frequency, which are spindle rotation and axis movement. Therefore, increasing effect of natural frequency to machine is top technical request.
 CHAPTER 1 INTRODUCTION 11.1. Milling machine 11.2. Manufacturing Automation 31.3. Computer Numerical Control machines 51.4. How does the CNC machine work? 7CHAPTER 2 DESIGN OF TABLE TOP CNC ROUTERS 122.1. What is a CNC router? 122.2. Design of table top CNC routers 132.2.1. Key design decisions 132.2.2. The structure of machine 152.2.3. Mechanical drive components and the motion systems 232.2.4. The electric components 30a. The CNC controller 312.2.5. The software 322.3. Post processor 32CHAPTER 3 FINITE ELEMENT ANALYSIS OF CNC ROUTERS 343.1. Finite element modals 353.2. Static analysis 423.3. Nature frequency analyses 50CHAPTER 4 BUILDING AND TESTS OF 4-AXIS CNC ROUTERS 544.1. Building and Tests of 4-axis routers 54CHAPTER 5 CONCLUSION & FUTURE WORK 575.1. Conclusion 575.2. Future work 58REFERENCES 59
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Hosseinkhani, High frequency harmonic cancellation in ball-screw drives. CIRP Conference on High Performance Cutting, 2012. Vol. 5[13]J.Z. Sobolewski, Vibration of the ball screw drive. Engineering Failure Analysis, 2012. Vol. 24.[14]Mishubishi electric company, Servo Amplifiers & Motors J4. 2013, Mishubishi electric company.[15]Ltd. Intek Technology Co., IClient Programming Manual. fourth ed. Incon Cnc Seriies 2013: Intek Technology Co., Ltd.[16]S. Moaveni, Finite Element Analysis: Theory and application with Ansys. Second ed. 2003, United State of America: Prentice-Hall Inc.[17]ANSYS Inc, ANSYS 14 Toturial. 2011: ANSYS Inc.[18]S.S.Rao, The Finite Elemetn Method In Engineering. Fourth ed. 2005, Burlington, USA: Elsevire.[19]W.W. Wang, Finite Element Analysis of Dynamic Charateristic for the XK717 CNC Milling Machine International Conference on Measuring Technology and Mechatronics Automation, 2009.[20]D.M. Cotsovos, Cracking of RC beam/column joints: Implications for the analysis of frame-type structures. Engineering Structures, 2013. Vol. 52.[21]O.S. Hopperstad T. Wang, O.G. Lademo, P.K. Larsen A.Kohser, E.P. Degarmo, J.T.Black, Finite element modelling of welded aluminium members subjected to four-point bending. Thin-Walled Structures 2007. Vol. 45: pages.40.[22]M.A. Mazid M. Alauddina, M.A. El Baradi, M.S.J. Hashmi, Cutting forces in the end milling of Inconel 718. Journal of Materials Processing Technology 1998. Vol. 77.[23]F. Wu, CNC milling Machine Spindle Characteristics Analysis by FEM. International Conference on Intelligent Computation Technology and Automation, 2010.[24]Q. Guo Y.W. Sun, Numerical simulation and prediction of cutting forces in five-axis milling processes with cutter run-out. International Journal of Machine Tools & Manufacture, 2011. Vol. 51.[25]K.S.R. Kumar B.M. Swami, Design And Structural Analysis Of CNC Vertical Milling Machine Bed. International Journal of Advanced Engineering Technology, 2012. Vol. 3.[26]B. Luo B. Li, X.Y. Mao, H. Cai, F.Y. Peng, H.Q Liu, A new approach to identifying the dynamic behavior of CNC machine tools with respect to different worktable feed speeds. International Journal of Machine Tools & Manufacture 2013. Vol. 72: pages.12.[27]D. S. Chavan U.S. Ghorpade, V. Patil, M. Gaikwad, Finite Element Analysis And Natural Frequency Optimization Of Engine Bracket. International Journal of Mechanical and Industrial Engineering 2012. Vol. 2.[28]G. Gely T. Kács, R. Lkiv, B. Ris, Model Predictive Vibration Control - Efficient Constrained MPC Vibration Control for Lightly Damped Mechanical Structures. 2012: Springer. pages.25-61.[29]P.V. Mohanram S.S. Abuthakeer, G.M. Kumar, Structural Redesigning Of A CNC Lathe Bed To Improve Its Static And Dynamic Characteristics. Annals Of Faculty Engineering Hunedoara – International Journal Of Engineering 2011. Vol. 9.[30]G.S. Racz R.E. Breaz, O.C. Bologa, V.T Oleksik, Motion Control of medium size CNC Machine-Tools –A Hands-on Approach. Industrial Electronics and Applications, 2012. Vol. 7.[31]Y.Y. Hsu W.T. Lei, Accuracy test of five-axis CNC machine tool with 3D probe–ball. Part I: design and modeling. International Journal of Machine Tools & Manufacture 2002. Vol. 42: pages.10.
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 1 26. 洪貞玲，2008。當偏鄉社區遇見科技資源： 以社會資本檢視九二一重建區數位機會中心的運作，新聞學研究，95：145-182。 2 18. 郭耀煌，2006。「數位機會中心：運用資通訊技術創造偏鄉居民的永續發展機會」，研考雙月刊 30(1):28-37。 3 16. 林金定、嚴嘉楓、陳美花，質性研究方法：訪談模式與實施步驟分析，身心障礙研究 2005, Vol.3, No.2。

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