OPEN ACCESS MME Understanding of Ultrasonic Assisted Machining with Diamond Grinding Tool

Copyright © 2014 Kyung-Hee Park et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In accor-dance of the Creative Commons Attribution License all Copyrights © 2014 are reserved for SCIRP and the owner of the intellectual property Kyung-Hee Park et al. All Copyright © 2014 are guarded by law and by SCIRP as a guardian. In this work, machining test was carried out in various machining conditions using ultrasonic vibration capable CNC machine. For work material, alumina ceramic (Al2O3) was used while for tool material diamond electrop-lated grinding wheel was used. To evaluate ultrasonic vibration effect, grinding test was performed with and without ultrasonic vibration in same machining condition. In ultrasonic mode, ultrasonic vibration of 20 kHz was generated by HSK 63 ultrasonic actuator. On the other hand, grinding forces were measured by KISTLER dynamometer. And an optimal sampling rate for grinding force measurement was obtained by a signal proces-sing and frequency analysis. The surface roughness of the ceramic was also measured by using stylus type sur-face roughness instrument and atomic force microscope (AFM). Besides, the scanning electron microscope (SEM