工具機的演進由九零年代的五軸加工機到今日以車銑複合工具機為主要的研發方向。面對複雜形狀的工件，若在車銑複合工具機上完成所有的加工工序，可減少夾持的次數，能有效的提高加工速率與產品精度。然而由於機台構型較複雜，因此應用虛擬實境技術於車銑複合虛擬工具機運動模擬系統上，可避免機台發生干涉的情形並可檢視產品的加工情況，以評估其可製造性。
　　本文針對非正交型的車銑複合工具機，發展出ㄧ套建構運動模擬系統之方法。在組裝虛擬工具機時，利用D-H修正標記法來表達工具機各軸之相對位置與運動方向，系統在接受構型資訊後，會自動定義出各軸元件間的座標系統，藉由D-H參數的輸入，就能迅速精準的建構出車銑複合虛擬工具機。另外，系統也利用D-H修正標記法建立出車銑複合工具機之後處理程式，此方法不論正交或非正交構型皆適用之，可提供一般化的解決方法。
　　本文以視窗程式為架構，使用OpenGL作為視窗顯示畫面，發展出讓使用者以操作介面選擇工具機構型並建構出車銑複合虛擬工具機模擬系統。最後以ㄧ車銑複合工件，透過本文所提出之方法來呈現虛擬工具機建構流程以及車銑複合工具機加工時的運動模擬，並利用VERICUT實體切削模擬軟體驗證系統後處理轉換的NC程式。

　　The evolution of machine tool has transferred from five-axis machine to mill-turn machine tool since 90’s, and it has become the major research and development trend today. For complex shape workpiece, if all of the machining processes can be finished on the mill-turn machine tool, the set-up time can be reduced; therefore, the production rate and the product precision would be increased effectively. Since the machine configuration of mill-turn is more complex, the application of virtual reality technology to the motion simulation system for mill-turn virtual machine tool is necessary to avoid interference. Therefore, the machining situation of products can be evaluated.
　　This thesis aims at non-orthogonal mill-turn virtual machine tool. A method of constructing motion simulation system is developed. When assembling virtual machine tool, it utilizes modified D-H notation to represent the relative position and motion direction of machine tool axes. Once the configuration information is input to the system, the system can assign the coordinate frames of machine tool components along with the D-H parameters. Thus, the mill-turn virtual machine tool can be constructed quickly and precisely. In addition, the system also utilizes modified D-H notation to develop the postprocessor of mill-turn machine tool, for both orthogonal and non-orthogonal axis configuration. Hence, an universal solution is obtained.
　　In this thesis, user interface is also developed. The displayed window is based on OpenGL. User can select the configuration of machine tool and construct simulation system for mill-turn virtual machine tool. A mill-turn workpiece is given to demonstrate the construction procedure for virtual machine tool. The motion simulation of mill-turn machine tool machining was compared with VERICUT software to verify the NC program of postprocessor transformation.

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