多軸工具機於須加工複雜曲面且高精度之製造產業，如航太、模具廠，皆扮演重要的角色。然而由於價格昂貴，製造廠商使用CAM軟體模擬加工過程的需求亦提高，因此應用虛擬實境技術於多軸虛擬工具機加工模擬系統發展上，已逐漸形成一專門研究領域。
　　以往對於虛擬多軸工具機之研究大多著重於發展單一構型之模擬系統，在其模擬功能或網路化加以著墨，如此的模擬系統對於不同需求之使用者將面臨很大的限制。本論文將針對虛擬五軸工具機，提出一套建構模擬系統之方法流程。其中利用D-H notation 規範表達工具機各軸之相對位置與運動方向。另外，為達到系統完整性，經由工具機加工限制之研究中，歸納出五軸工具機各種構型種類。最後採用五軸工具機泛用型後處理演算法產生工具機運動所需之NC碼，使得建構流程由組裝到加工模擬之位置控制皆為一般化，能廣泛地使用於各種構型之五軸工具機。
　　本文以視窗程式為架構，發展一使用者操作介面，輔助不同需求的使用者作構型選擇，一方面引導其輸入模擬所需檔案資料，一方面為其判斷模擬工具機運動所需加工資訊，快速有效地輔助其建構完成欲操作模擬之五軸虛擬工具機模擬系統。本文最後以一五軸工具機實例，透過本文所提出之方法完成建構流程並進行加工模擬，最後輸出系統產生之NC file，透過Vericut 模擬軟體進行驗證比對。

　　Multi-axis machine tool acts the important role in manufacture, such as aerospace and mold industries, that need producing surface with high complexity and precision. Due to high cost of multi-axis machine tool, the demand for using CAM software to simulate machining process increases. Therefore, to develop multi-axis virtual machine tool simulation system by virtual reality technology has gradually formed a special research area.
　　Most of the researches about virtual multi-axis machine’s simulation system focus on development of functions or Web-based convenience in single specification. There are many limitations in simulation systems of single specification for users of different territories. For construction of virtual 5-axis machine simulation system, a new methodology is proposed in this thesis. First, D-H notation is used to represent the relative position and motion direction of machine tool’s various axes. Moreover, for achieving the system integrity, all type of configuration for five-axis machines is generated with the machining constraints. Finally, using the universal 5-axis postprocessor algorithm, NC files for machine tool movement are generated. The procedure from assemblage to machining simulation is generalized and taking account for various five-axis machine tools.
　　In this research, a user interface is developed. The interface can help users to select which specification they want to simulate and to input files that are necessary in simulation, and the system determines the machining information for user. This can assist users in constructing the simulation system they want efficiently and effectively. Finally, a five-axis machine was taken as the example to demonstrate the new method proposed in this thesis by completing the construction process and carrying out the machining simulation. The system finally output the NC file and verified the machining process by Vericut software.

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