Analytical modeling of cutting force and cutting temperature in turning steel under cryogenic cooling condition

Abstract

In the machining operation the energy dissipated is converted into heat which raises the temperature in the cutting zone. The increase of cutting temperature results tool wear, surface roughness, dimensional inaccuracy significantly. Not only is the cutting temperature, cutting force also increases with tool wear which results the increase of power and specific energy consumption. The cutting temperature restrains productivity, quality and hence machining economy, can be controlled by the application of cutting fluid. But conventional cutting fluids are ineffective to control the temperature in maximum cutting zones. So cryogenic cooling is environmental friendly new approach to control the temperature desirably. Cryogenics is the study of the production of very low temperature (-196°C) and the behavior of materials at that temperature. The physical behavior during metal cutting has been changed because of cutting condition, cutting environment and work/tool material. The aim of the present work is to investigate the role of cryogenic cooling on the formation of chip, cutting temperature and force and then develop analytical model for cutting temperature and force in turning 42CrMo4 steel under cryogenic cooling condition. The m.files of matlab has been used to determine the modeled value of cutting force and cutting temperature under cryogenic cooling condition. From an economic viewpoint, it is evident that having knowledge about the machining responses such as, cutting forces, cutting temperature and work piece surface integrity at different cutting conditions would be highly desirable as a means of realizing cost savings, increased productivity, efficiency and for preventing any hazard occurring to the machine, cutting tool or the deterioration of the quality.