抄録
The characteristics of the machined surface is generally considerably poorer than the grinded surface due to affected layer by a plastic deformation occurring around the cutting edge. A work-affected layer is generated due to plastic deformation occurring in the vicinity of the cutting edge on the finished surface with metal cutting processes. The objective of this study is to evaluate the machined surface characteristics on reverse finishing 0.45%C carbon steel focusing on the direction of finishing with respect to the roughing direction. Orthogonal dry cutting tests by the application of reverse finishing were performed to investigate the difference from that obtained by the same direction finishing from the viewpoints of hardness, cutting force, residual stress. It was suggested that there is an appropriate combination with the depth of cut on finishing and the depth of work-affected layer caused by roughing in order to obtain the effect of reverse finishing. Effect of rake angle on hardness was smaller as rake angle becomes larger. The cutting force was smaller in reverse finishing as the rake angle becomes larger. Residual stress after reverse finishing was larger than that in same direction finishing. FEM simulation setup capable of reproducing reverse finishing was created.
