非标刀具的制作对机械切削加工十分重要。由于标准刀具的制作针对的是面广量大的普通金属件或非金属件的切削，当遇到工件进行过热处理而硬度增大，表面几何形状十分复杂的工件，或被加工表面有较高的粗糙度要求等情况时，标准刀具就无法满足加工的需要。所以在加工过程中，需对刀具的材质、刀口的几何形状，几何角度等，进行针对性的设计。
The manufacture of non-standard cutting tools is very important for machining. Because the standard cutting tool is used to cut a wide range of common metal or non-metal parts, when the workpiece is overheated and the hardness increases, the surface geometry is very complex, or the machined surface has high roughness requirements, the standard cutting tool can not meet the processing needs. Therefore, in the process of machining, it is necessary to design the material, geometric shape and geometric angle of the tool.