Ultrasonically assisted turning of NiTi based shape memory alloy
نویسندگان
چکیده
In this study, vibration cutting has been applied to machining of a novel material, NiTi based shape memory alloy (SMA), using a commercial ultrasonic piezoelectric transducer to vibrate an ISO insert CCMT geometry cutting tool. The effect of vibration in turning process was characterized by investigating the surface roughness of workpiece and surface quality assessment of machined surface using Light microscopy. Turning was conducted with ultrasonic vibration applied in the feed direction using autoresonant control software. The surface roughness of the ultrasonically and conventionally machined workpieces were measured and compared. The aim of the present research was to create an ultrasonic-assisted turning (UAT) facility to machining NiTi based SMA and to estimate the possible improvements in surface quality, using commercial transducers and ISO insert cutting tools. The results indicate that the application of ultrasonic vibration can significantly improve the surface quality of NiTi based alloy up to 30%.
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