Multi objective optimization model of CNC turning for minimizing processing time and carbon emission with real machining application

Abstract

The purpose of this research is to develop an optimization model of CNC turning process. The objective function of the model is to minimize processing time and carbon emission. We implemented the results of optimization with real machining application using a certain workpiece. In tight competition, efficiency is important for manufacturing companies to produce competitive product in the market (Berk, 2010). One way to achieve high efficiency is by the use of modern manufacturing technology such as CNC machines. CNC machining is a process method used in many manufacturing systems (Yi, Li, Tang & Chen, 2015). Two important CNC machining processes are milling and turning processes. According to Rochim (2007), turning process is a process forming of the workpiece by material removal a linearly (longitudinal, horizontal or angular). CNC turning machine is very effectively used to produce a workpiece in large quantities and in the same time some savings are obtained in the form of cutting tool, processing time, and machining costs (Subagio, 2012).