In the machining, the cutting between the tool and the material produces chips. Cutting parameters and tool wear can affect the color and shape of the chips. According to the observer＇s experience, the cutting conditions for chip formation can be known. It means that using cutting chips to decide wear of cutting tools is theoretically a feasible method.

德國與日本為工具機生產與精密加工之先進製造國家，而許多師傅在切削加工過程中皆會使用加工切屑進行判斷，主要分析加工參數與刀具磨耗，本研究將利用切屑特徵進行分析與數值化，並且應用數值分析與模型建立進而估測刀具壽命。

In the machining, the cutting between the tool and the material produces chips. Cutting parameters and tool wear can affect the color and shape of the chips. According to the observer＇s experience, the cutting conditions for chip formation can be known. It means that using cutting chips to decide wear of cutting tools is theoretically a feasible method.