The efficiency range of economical cutting conditions for a multistage transfer machine under a failure replacement strategy

This paper presents models for calculating the optimal cutting feed rate and spindle speed at each stage in a multistage transfer machine. The optimal cutting conditions are determined by taking into account the cutting constraints for three objective functions, which are: minimum expected cycle time, minimum expected cost per unit, and maximum expected profit rate, using a one-dimensional search procedure. The efficiency range in which the optimal solutions for the three objective functions can be found is also analyzed. In addition, the optimal cutting conditions at each stage are compared to those of a stand-alone cutting machine.