In previous papers [1] and [2], the authors presented models for predicting surface roughness, maximum cutting temperature, and residual stress distribution on the machined surface based on the parameters of machine tool and cutting conditions in turning. This paper presents a general procedure for the selection of the machining parameters for a given machine which provide the maximum metal removal rate for any specified surface quality and tool life. Numerical results show that the procedure can be used to considerable advantage in specifying the machining variables in order to achieve the stated objective.