2002-01-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/685335摘要：CNC五軸加工設備主要應用於航太及國防工業，特別是針對複雜曲面之零組件加工需求，由於工件材料以鈦合金等難切削材為主，如何在維護精度品質的前提下提昇其加工效能，將是日後推廣應用亟需突破的瓶頸。 　　CNC五軸加工機屬高單價設備，將之結合高速切削技術是提昇加工效能值得推動的方向。高速切削技術具高金屬移除率的經濟誘因外，低切削力及低熱變形的特性，則進一步確保產品的精度品質。惟一的限制因素是主軸剛性可能不足，所伴隨的顫振問題輕則招致工件、刀具的損壞，嚴重的將傷及主軸。本計劃將以中科院現有CNC五軸機台為對象，針對上述問題點，在維護工件品質與提昇加工性能的目標下，依序規劃下列研究項目： 1) 分析CNC五軸加工機顫振之動態模式 2) 建立結構模態分析模型 3) 辨識加工機系統作用外力（切削力、主軸偏擺runout等） 4) 加工機動態系統參數量測 5) 模態分析與實驗比對 6) 最佳化策略規劃與加工性能提昇 7) 高速切削條件下CNC路徑規劃策略研究 本計劃將分兩年執行，第一年重點以CNC五軸加工機顫振之動態模式分析，與加工機動態系統參數量測等，以加工件的精度品質確保為主軸<br> Abstract: 5-Axis Machining equipment has been dominantly applied in aero-space and defense industries. Demands are mainly focused on production of components of hard-to-machined materials with highly complex geometry. An important issue is how to improve machining efficiency of the high cost equipment while maintaining its product quality. High speed cutting can significantly enhance production efficiency. The unique characteristics of lower cutting forces and less thermal deformation errors further assure the production accuracy. Its integration with 5-Axis machining makes an attractive step to follow. The only consideration is the potential vibration problem likely to be caused by the lower structure stiffness of 5-Axis machining equipment. The objectives of the present research fall into three main categories: (1) establish the dynamic analysis model for the 5-axis equipment, (2) measure the system dynamic parameters, and (3) form a practical strategy for the performance enhancement of the equipment under high-speed cutting conditions.五軸加工動態模式5-Axis MachiningModal Analysis