Fundamental Study on the Precision Abrasive Machining Using a Cavitation in Reversing Suction Flow

Abstract:

The purpose of this study is to make clear the machining effect of the precision abrasive machining using the cavitation in reversing suction flow, which can easily finish to a fine surface by a simple apparatus. The machining fluid including loose micro abrasive grains is sucked by a pump, and the cavitation occurs ahead of the nozzle fixed in the suction chamber because of the rapid decrease of pressure of machining fluid. We use the cavitation impact to make the abrasive grains to interfere with the workpiece surface. In this report, the possibility of application of the new abrasive machining to the precision manufacturing is investigated by analyzing the behavior of machining fluid, the stock removal and the surface finish in machining of glass. The cavitation impact is strongest under the nozzle clearance of 20mm and restriction nozzle diameter of 4mm. Glass surface is finished up to several nanometers in Ry with slight stock removal by the proposed abrasive machining.

• Periodical: Key Engineering Materials (Volumes 389-390)
• Pages: 223-228
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.389-390.223
• Online since: September 2008
• Authors: Kazuhito Ohashi, Rong Jun Wang, Hiroyuki Hasegawa, Shinya Tsukamoto
• Keywords: Abrasive Machining, Cavitation, Cavitation Impact, Restriction Nozzle, Surface Finish

References

[1] Yuzo MORI, Toru OKUDA, Kazuhisa SUGIYAMA and Kazuto YAMAUCHI: Numerically Controlled Elastic Emission Machining-Consideration of Machining Property by Motion Analysis of Powder Particle in Fluid, Jour. of JSPE, 51, 5 (1985) 1033.

DOI: 10.2493/jjspe1933.51.1033

[2] Yoshiharu NAMBA: Float Polishing, Japanese Jour. of Optics, 13, 6 (1984) 454.

[3] Takeshi YASUI, Takayuki SHIBATA, Eiji MAKINO: Fine Patterning by Blasting Technique and its Appplication to the Fabrication of Biochip, Proceedings of JSME meeting in Kanto branch, (2004)215.

[4] I. Ogura and Y. Okazaki: Ductile-Regime Machining of Optical Glasses by Means of Single Point Diamond Turning, J. Jpn. Soc. Precis. Eng., 66, 9 (2000)1431.

[5] CHEN Mingjun, PANG Qilong, WANG Jinghe, CHENG Kai(Harbin Inst. Technol., Harbin, CHN): 3D Fractal Analysis of Ultra Precision Grinding Influencing on the Surface Topography of Brittle Material, Key Eng Master, 359/360(2008)523.

DOI: 10.4028/www.scientific.net/kem.359-360.523

[6] K. OHASHI, K. NISHIYAMA, R. MURAMOTO, T. NAKAJIMA: A Foundamental Study on Cavitation Aided Machining, J. Jpn. Soc. Precis. Eng., 67, 12(2001)2000 (in Japanese).

[7] Kazuhito OHASHI, Rongjun WANG, Shinya TSUKAMOTO and Toshikatsu NAKAJIMA: Fundamenal Study on a CavitationAided Machining, 8th International Conference on Progress of Machining Technology, (2006) 405.