Title: Rotary Ultrasonic Machining of Potassium Dihydrogen Phosphate (KDP) crystal: an experimental investigation

Authors: Qiangguo Wang, Z.J. Pei, Hang Gao, N.J. Churi, Renke Kang

Addresses: Key Laboratory of the Ministry of Education for Precision and Non-traditional Machining Technology, Dalian University of Technology, Dalian, Liaoning 116024, China. ' Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, KS 66506, USA. ' Key Laboratory of the Ministry of Education for Precision and Non-traditional Machining Technology, Dalian University of Technology, Dalian, Liaoning 116024, China. ' Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, KS 66506, USA. ' Key Laboratory of the Ministry of Education for Precision and Non-traditional Machining Technology, Dalian University of Technology, Dalian, Liaoning 116024, China

Abstract: Potassium Dihydrogen Phosphate (KDP) crystal, widely used as important electro-optic parts, is a typical hard-to-machine material for its soft, brittle, and anisotropic properties. KDP parts usually require extremely high machining quality. Reported methods so far for KDP crystal machining include diamond turning, grinding, magnetorheological finishing, and polishing. This paper presents an experimental investigation on Rotary Ultrasonic Machining (RUM) of KDP. Data of several output parameters (such as grinding force and torque, surface roughness, and edge chipping) were collected and analysed. As a comparison, diamond drilling (without ultrasonic vibration) was also tested.

Keywords: diamond drilling; KDP crystal; machining; RUM; rotary ultrasonic machining; surface roughness; vibration assisted grinding; potassium dihydrogen phosphate; electro-optics; grinding force; torque; edge chipping.

DOI: 10.1504/IJMMS.2009.027126

International Journal of Mechatronics and Manufacturing Systems, 2009 Vol.2 No.4, pp.414 - 426

Published online: 15 Jul 2009 *

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