No abstract

A numerical modeling method for plane strain orthogonal cutting in steady state is developed on the basis of the rigid-plastic finite element method. The methods for determining the material and frictional properties to be used in the model are discussed. The shape of chip, i.e., the thickness and curl, distributions of stress and strain are calculated. Fracture of chip is predicted by combining the present model with the criteria of ductile fracture. The simulated results agree well with the results obtained by the microscale cutting experiment carried out within a scanning electron microscope.

No abstract

No abstract

No abstract

No abstract

No abstract

An analytical method applying a chance-constrained programming concept is proposed to determine the optimum cutting conditions considering the probabilistic nature of the objective function and constraints. The proposed analytical method is illustrated through an application to an example. It is shown that the optimum cutting conditions are significantly affected by the probabilistic nature of coefficients in the constraints. The effect of the uncertainty of the predicted tool life in the production cost function on the optimum cutting conditions is also considered. The study further investigates the effects of the cost-time parameter and allowable maximum force on the optimum conditions and the resulting production cost.