進行多軸曲面加工時，複合化工具機的構形會影響到產品的可加工性，以往加工曲面時選擇複合化工具機的構形主要是仰賴工程師的經驗，而隨著複合化工具機構形種類越來越複雜，尤其是近年來車銑複合工具機的問世，工程師僅憑著經驗法則來判斷已顯得十分的不足。若因經驗不足而選擇錯誤之構形，將導致生產時程延誤與成本增加。為使工程師能正確的選擇車銑複合工具機構形，本研究發展一套車銑複合可製造性初步評估系統，以助進行車銑複合工具機構形選擇以及對給定的工件幾何評估所需之加工旋轉角與線性行程。
本文利用向量分析法對車銑複合工件之曲面資料進行分析，將車銑複合加工製程之幾何特徵分成三類，分別為平面、軸對稱曲面及自由曲面。使用向量分析法對平面與軸對稱曲面進行幾何資料分析評估，可評估出所需之車銑複合工具機構形及計算旋轉軸角度範圍與加工行程範圍。自由曲面則利用可視錐理論配合車銑複合工具機之刀軸方位，可評估出適合之車銑複合工具機構形及旋轉軸角度範圍與加工行程範圍。將上述分析法則加以整合歸納，即為本論文的車銑複合可製造性初步評估法則。最後本文以三個不同特徵的車銑複合加工件進行實例分析，並利用商用軟體來進行評估結果驗證。

The configuration of the multi-task machine tool influences the manufacturability of the product during surface machining; therefore, choosing correct configuration is an important task. Traditional methods of choosing the configuration of multi-task machine tool for surface machining depend on the experiences of manufacturing engineers. Because the multi-task machine tools have become more complex especially for turn-mill machines, it is not enough for engineers to use their own experiences to make the configuration selection. If the experience rule cannot work, it causes the production delay and the cost increase. In order to assist the engineers to select the multi-task machine tool configuration more accurately, this study develops a manufacturability evaluation system to evaluate the required rotating angle and linear traverse range for the mill-turn machine tools for a given workpiece geometry.
In this research, the vector analysis is used for analyzing surface data points of the mill-turn part, the geometric features can be classified into three categories. The necessary rotating angle and traverse range of the plane face and symmetric surface are evaluated by vector analysis. The necessary rotating angle and traverse range of free surface are evaluated by visibility cone and tool orientation of turn-mill machine. Above-mentioned methods are integrated into to the manufacturability preliminary evaluation rules which be proposed in this thesis. Finally, taking three different part as examples, the manufacturability preliminary evaluation is verified by the simulation results generated from a commercial software.

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