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    Experimental examination of main cutting force and surface roughness depending on cutting parameters
    (2008) Korkut, I.; Boy, M.
    Main cutting forces acting on cutting tool depending on cutting parameters when machining AISI 1117 steel were examined experimentally. Experimental results obtained were compared with the empirical results. For the experimental studies, a Kistler 9257A three component (Fc, Ff and Fp) piezoelectric dynamometer was used to measure cutting forces. This dynamometer was associated with a 5019 B130 charge amplifier connected to a PC running Kistler Dynoware force measurement software. The empirical results were obtained through Kienzle approach. Five different cutting speeds, five different feed rates and two different depth of cuts were used in the experiments. It was observed that cutting forces decreased as the cutting speed increased and increased by the feed rate. Experimental results also showed similar trends with the empirical results. At the end of experiments, it was observed that surface quality increased by with increasing cutting speed and decreased with increasing feed rate. © 2008 Journal of Mechanical Engineering. All rights reserved.
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    The influence of cutting tool rake angle on cutting forces when machining aluminium alloys
    (2005) Sekmen, M.; Gunaya, M.; Ciftcib, I.; Korkut, I.; Sekera, U.
    In this study, experimental investigation of the effect of cutting tool rake angle during machining of AA 2011 and AA 7075 aluminium alloys was earned out. For this purpose, a previously designed and manufactured dynamometer incorporating load cells was used to measure the cutting forces during turning. This system enabled the tool holder to rotate so that the cutting tool's rake angle could be adjusted. The machining tests were conducted at six different rake angles, five different cutting speeds while feed rate and depth of cut were kept constant. During the tests, primary cutting force (Fc) and feed force (Fa) components were measured and recorded on a personal computer (PC). Theoretical cutting force values were also determined using Kienzle approach. The results showed that cutting forces decreased with increasing rake angle and increasing cutting speed for the both alloys.