微細エンドミル加工における加工状態のモニタリング

抄録

In the case of milling with micro end mill, cutting force, cutting sound and vibration are too small to detect tool breakage or abnormal cutting conditions. These were reasons why suitable measuring tool was not supplied until now. In previous papers, we have proposed a equipment to measure small cutting force acting on micro end mill in x-y plane. Deflection of a tool was captured by CCD camera and processed to measure cutting force.
In this paper, our proposed equipment was applied to milling process with micro end mill to optimize cutting process and detect abnormal cutting condition. In optimization, relation between cutting force and cutting volume was formulated and optimization effect was verified by the proposed equipment. In detection of abnormal cutting condition, relation between tool wear and RMS value of cutting force was estimated.
Finally, we optimized cutting condition and detected abnormal cutting condition very well.