五軸加工斜面特徵路徑轉換之數值控制程式研究

Studies on the Tool Path Transformation of Tilted Plane Machining Features for Five-axis Numerical Control Programming

鄭智豪(Zhi-Hao Zheng)

指導教授 ： 佘振華

國立虎尾科技大學/工程學院/創意工程與精密科技研究所/碩士(2011年)

摘要

製造產業如航太業、模具廠，需加工複雜且高精度曲面產品，以具有兩個旋轉軸的多軸工具機來加工這些產品成為了不可或缺的角色。然而在市場競爭激烈情形下，每家製造商都致力於降低加工時間及成本，如何有效率的產生多軸數值控制程式成為了一個重要的課題。
典型的多軸加工零件上，經常在傾斜平面上有特定的加工特徵，如鑽孔、挖槽甚至雕刻文字，雖然加工路徑可使用高階多軸CAD/CAM系統產生，但這類系統價格昂貴。本論文針對多軸工具機之傾斜工作平面提出一套定義方法，可將一般傳統三軸工具機之平面刀具路徑檔，利用本文提出不同工作座標轉換方式，透過後處理演算，產生五軸工具機運動所需之數值控制程式，使得在相同的特徵加工，能以短時間內快速得到任意傾斜平面上之加工程式。
本文發展出視窗化介面，可依不同傾斜平面定義需求，選擇方法完成轉換，最後將產生數值控制程式，透過實體模擬切削軟體VERICUT進行驗證比對其正確性。

關鍵字

五軸工具機 ； 數值控制 ； 傾斜平面 ； 特徵加工

並列摘要

Manufacturing industries such as the aerospace industry and the molding industry need to process products of complex and high-precision curved surface. Multi-axis machine tool with two rotational axes plays an indispensable role in processing such products. However, in a fiercely competitive market, each manufacturer is devoted to reduce processing time and costs. Therefore, how to efficiently create multi-axis numerical control program has become an important issue.
Typical multi-axis machining parts often have specific machining features such as drilling, slot or even engraved text on the inclined plane. Although the tool path can be generated by the advanced multi-axis CAD/CAM system, the prices of such systems are very high. This study proposed a set of defining methods for the inclined working plane of the multi-axis machining tool. According to the different conversion methods for working coordinates system proposed in this study, the 2D tool path files of the traditional three-axis machine tool can be transformed to the five-axis NC program through post-processing calculation. As a result, the required NC program can be obtained for the same machining feature on any inclined plane in shorter time.
This study developed a Window-based interface so that users can choose the method to transform conversion according to the defined requirements of different inclined planes. Finally, this study tested and confirmed the accuracy of the numerical control program by solid cutting simulation software VERICUT.

並列關鍵字

Five-axis machining ； Numerical control ； Tilted plane ； Machining feature

參考文獻

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