切削加工変質層生成過程のシミュレーション解析 (第2報)

Abstract

The effect of tool rake angle and friction characteristics of tool face on residual stress distribution within machined sublayer was investigated based on FEM simulation proposed in the previous paper. Within the machined top surface by a sharp edge tool the tensile residual stress in the cutting direction was generated. The tensile stress increased with increase of rake angle and decrease of the friction characteristic. The stress on tool flank face affects on the amount of the residual stress and its distribution. The normal stress on the flank face has a tendency to decrease the tensile stress on machined top surface, while the frictional stress increases the tensile stress. It may be possible to control the amount of residual stress and its distribution by change of tool edge geometry or use of cutting fluid.