Machining conditions optimization, tool allocation, and tool magazine arrangement on a CNC turning center

Abstract

In the view of the high investment and tooling cost of a CNC machining center, the cutting and idle times should be optimized by considering the tool consumption and the non-machining time components for an effective utilization. Therefore, it is necessary to develop a new module as a part of the overall computer-aided process planning system, which will improve both the system effectiveness and provide consistent process plans. In this thesis, it is proposed to build a detailed mathematical model for the operation of a CNC lathe which will include the system characterization, the cutting conditions and tool life relationship, and related constraints. Then an algorithm is presented to find tool-operation assignments, machining conditions, appropriate tool magazine organization, and an operations sequence which will result in a minimum production cost.