CNC 가공에서 공구길이와 표면 거칠기에 관한 연구

A Study on Tool Length and Surface Roughness in CNC Processing

The current manufacturing environment is changing rapidly. Various products are being designed and manufactured using computer-aided design/computer-assisted manufacturing and computer numerical control machines. Granting cutting conditions in machining and selecting cutting tools is related to machining technology. In this study, experiments were conducted to select the appropriate length of a cutting tool for machining to obtain the optimal precision straightening surface. The correct tool length was determined relative to the tool diameter by measuring the surface roughness of the straightened machined part based on different lengths of the tool. It was found that the values of surface roughness vary depending on the length of the tool. Based on current practice, the experiments with tool length of machining confirmed that the machining surface for a short tool, which is less than 5 times the diameter, exhibited good surface roughness.