PC-Based開放式架構之工具機控制器，具有支援硬體規格之軟體介面、通訊協定和容易操作的Windows圖形使用者介面。此外，可同時執行多項工作，提供控制演算法則發展和模擬控制流程的環境，成為新一代工業控制器的主流。車銑複合加工機結合車床與銑床加工的特性於一身，可以在同一台加工機上車削加工圓形工件及進行銑削平面、鑽孔等加工動作，另外再配合C軸及B軸，使加工形式更多元化，工件由一次挾持便可以直接成形，對於精度的提升有相當大的助益。
故本研究將以車銑複合工具機為基，進行PC-based CNC即時系統設計與實現。本研究使用Visual C++ 軟體於Windows NT外掛RTX子系統下進行系統開發，首先根據車銑複合五軸工具機之特性，建立CNC系統硬體架構與系統軟體架構，針對控制器輸入命令(NC code或Macro)進行解譯模組開發與Macro圖形式對話框軟體實現。並探討如何使CNC系統具即時性，建立一具即時性之CNC系統架構，再包含加減速規劃與PID伺服迴路控制，進行即時CNC伺服控制器實現。最後建立人機介面模組，並將各功能模組整合，完成車銑複合五軸工具機之PC-based CNC即時系統。

The PC-based open architecture machine tool controller has many advantages. For example, the software interface supporting the hardware specifications and windows graphic user interface easily. Besides, it can execute multi-tasking job and provide the environment for developing control algorithms and simulating control processes. The mill-turn machine tool possesses the features of lathe and miller. It can turn cylinder, mill plane and drill hole in the mill-turn machine tool. The C-axis and B-axis are included in this mill-turn machine for finishing a workpiece by only one fixturing step. Therefore, the mill-turn machine tool has better machining accuracy.
This study will design and investigate the PC-based CNC system for Mill-Turn five axis machine tool. The visual C++ is adopted to develop the CNC system on a RTX environment. First, the CNC hardware structure and software structure are built up according to the characteristics of Mill-Turn five axis machine tool. The developments of the interpreter module, the Macro graphic dialog module, the Real-Time sub-system to implement Real-Time CNC servo controller, the acceleration / deceleration algorithm and the PID servo loop control are included in this thesis. Finally, this research develops the MMI module and integrates overall modules into the PC-based CNC system for Mill-Turn five axis machine tool.

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