In order to select the optimum cutting conditions including tool failure, the analytical prediction system for time dependence of failure is required. It is very long way to obtain the fracture characteristics of tool material and their change. In the paper an acquisition system of characteristics by a series of rapid cutting tests is proposed. In the system, stress distribution on tool rake face is predicted by FEM based on the fracture shape experimentally obtained.Then the fracture characteristics are also acquired by the time dependence of fracture probability measured. Finally the time dependence of fracture probability is predicted based on the characteristics obtained and compared with experimental results.
