Modeling and optimization of temperature in end milling operations

Milling is one of the most important and most complex cutting machining processes. During the milling process, the cross section of the chip is variable. Also, all milling operations are intermittent process. The cutting edge of the mill tooth periodically enter and exit from the contact with the work-piece, which leads to periodic heating and cooling during machining. This periodic change of temperature during the machining significantly affects the process of tool wear and therefore the quality of the machined surface. The aim of this paper is to model and optimize the parameters of the machining process in order to achieve the minimum temperature. In order to perform optimization, it was necessary to perform temperature measurements for the various parameters of the machining process. A infrared camera was used for temperature measurement. Then, based on the measured values, the mathematical modeling of the temperature was performed depending on the cutting speed, the feed rate and the depth of cut. This model is then optimized with two different optimization techniques.