Flexible optimization of machining variables using constrained R-T characteristic curve

An algorithm is developed to find optimal machining variables for multiple machining environments. The cutting ratetool life (R-T) characteristic curve presents the general loci of optima and is useful for flexible machining operations planning. The R-T characteristic curve for machining economics problems with a linear-logarithmic tool life model may be determined by applying sensitivity analysis to log-dual problems. Three cases of changes of machining environments are considered. An end-milling example is constructed to illustrate the algorithm.