現今以工件精度檢測五軸機台性能，主要是依據NAS 979與ISO 10791訂定之測試件規範，但NAS 979和ISO 10791之測試件相關切削條件設定，仍有許多不足之處，例如測試件只在傾斜角度的狀態下，由一般三軸或四軸工具機即可完成加工。因此，本研究將建立完整的標準切削性能檢測，檢測五軸工具機台性能，可藉以有效提升五軸工具機加工應用技術。

本研究運用直接切削測試法，藉由設計之切削測試件，圓柱型切削測試件和金字塔型切削測試件，加入凸顯五軸同動加工特徵項目於切削測試件中，透過切削參數與加工路徑之規劃，設定切削測試件尺寸與幾何公差項目，並利用金字塔型切削測試件，推導各軸定位誤差，且實際進行B及C Type五軸工具機加工測試，再將切削完之切削測試件皆使用蔡司三次元量床進行量測，完成B及C Type五軸工具機切削性能檢測。

The machining performance of five-axis machine tools is commonly examined by the specifications of National Aerospace Standards (NAS) 979 or International Organization for Standardization (ISO) 10791. Hower, the cutting conditions for five-axis machine tools, which have not been defined thoroughly, would cause problems, such as the test piece can also be used for machining in the three-axis or four-axis machine tools leading to poor machining evaluation performance. In order to improve the five-axis machine tool machining test techniques, this study designs a set of complete cutting processes in direct cutting test method for examining five-axis machine tools performance. The cylindrical test piece and the pyramid test piece are designed with novel cutting parameter and patterns. One of the cylindrical test piece consists of features, which include the five-axis machine tools simultaneous machining patterns. The positioning errors can be clearly evaluated on the pyramid test piece by using measured location. Finished test pieces are measured using Zeiss Coordinate Measuring Machine (CMM) and this research also presents a complete cutting performance for B and C type five-axis machine tools.

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