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Open Access Nano Express

Effect of focusing flow on stationary spot machining properties in elastic emission machining

Yoshinori Takei* and Hidekazu Mimura

Author affiliations

Department of Precision Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

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Citation and License

Nanoscale Research Letters 2013, 8:237  doi:10.1186/1556-276X-8-237

Published: 16 May 2013

Abstract

Ultraprecise optical elements are applied in advanced optical apparatus. Elastic emission machining (EEM) is one of the ultraprecision machining methods used to fabricate shapes with 0.1-nm accuracy. In this study, we proposed and experimentally tested the control of the shape of a stationary spot profile by introducing a focusing-flow state between the nozzle outlet and the workpiece surface in EEM. The simulation results indicate that the focusing-flow nozzle sharpens the distribution of the velocity on the workpiece surface. The results of machining experiments verified those of the simulation. The obtained stationary spot conditions will be useful for surface processing with a high spatial resolution.

Keywords:
Elastic emission machining; Fluid simulation; Focusing flow; Figure correction; Stationary spot machining