Shape Design and Machinability Evaluation of Flat End mill for High Speed Machining of GC250 Material

회주철(GC250)의 고속가공을 위한 엔드밀공구의 형상 설계 및 가공성 평가

In the present investigation, the improvement of processing efficiency in the high speed machining of GC250 is explored. This study is to evaluate the tool performance in difficult-to-material using the new developed tool. Tool performance evaluation are conducted by tool wear, surface roughness, chattering in machined surface. The tool wear of A type was smaller than B type. In type B tool the chatter mark was observed in machined surface. The good surface roughness was obtained in type A tool. Consequently, the tool performance of A type is better than B type.