Abstract
Abstract Thermally-assisted machining (TAM) is a developed machining method to improve the machinability of difficult-to-cut materials. TAM is preheating the material in front of the cutting tool and machining the preheating area. However, this machining method is carried out by adding a preheating device to a general machine tool. Therefore, this has the effect of increasing total power consumption compared with conventional machining (CM) methods. Power consumption analysis is vital in view of the efficiency of the machining methods and conditions. However, research on the power consumption of thermally-assisted machining is still lacking. This paper focuses on the machining efficiency according to power consumption in difficult-to-cut material machining of conventional machining, laser-assisted machining (LAM), and induction-assisted machining (IAM) with Inconel 718. Thermal analysis was performed to determine the effective depth of cut. In the case of IAM, a thermal-electromagnetic coupled analysis was performed to determine the dwell time for preheating and effective depth of cut. The power consumption, cutting force, and surface roughness was analyzed according to various machining conditions. Experimental results verified the efficiency of LAM and IAM in comparison with CM.
Published Version
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