By Don E Bray; American Ceramic Society.; Wiley InterScience (Online service)
Read or Download 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures A[-B] : January 20-24, 1998, Cocoa Beach, Florida PDF
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Additional info for 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures A[-B] : January 20-24, 1998, Cocoa Beach, Florida
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10] M. Kunieda: Practical Vibration Theory (Rikougaku-sha, Tokyo 1988). (In Japanese) [11] S. Ueha and Y. Tomikawa: ew Ultrsonic Motor (Torikkepus publication, Japan 1991). 23 Simulation Investigation of Tangential-feed Centerless Grinding Process Performed on Surface Grinder W. Xu1,a, Y. Wu2,b, T. Sato2,c and W. Lin2,d 1 2 a Graduate School, Akita Prefectural University, Yurihonjo, Akita 015-0055, Japan Dept. jp Keywords: Centerless Grinding, Surface Grinder, Ultrasonic Vibration, Roundness, Simulation Abstract.
Both the grinding forces and the ground work surface are measured and examined. Experimental results show that the grinding force decreases significantly and the resulted surface is improved in certain degree with the ultrasonic vibration compared to those of conventional grinding without ultrasonication. This indicates that the high efficiency grinding for sapphire substrate can be performed with the two-dimensional vibration grinding technique presented in this paper. Introduction As a typical oxide ceramic material, sapphire has many excellent optical and physical properties and becomes an optimal choice for optical engineering, such as LEDs and infrared detectors.
14 Microscopic images of the ground surfaces (ap=1μm, Vs=30 m/s, Vf=40 mm/min) Conclusion A two-dimensional ultrasonic vibration assisted grinding technique was proposed for the grinding of sapphire material. An experimental apparatus mainly composed of an elliptic ultrasonic vibrator was designed and constructed, and a series of grinding experiments involving sapphire substrates were carried out on the produced apparatus. The obtained results showed that under the assistance of 2D ultrasonic vibration, the grinding forces decreased by more than 30% and the work surface quality improved slightly compared to those under the absence of ultrasonication.