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The present paper describes the highly efficient and precise ELID grinding method and presents a discussion on the ELID grinding process and the grinding characteristics of several kinds of ceramic materials. The following conclusions are obtained; (1) Good ground surface roughness and accuracy are achieved using the #4000 metal-bonded grinding wheel in through-feed centerless grinding for ZrO2 optical fiber ferrules. (2) Efficient and precise grinding of spherical lens molds with cup wheels using the ELID process was proposed and tested in the present study. Our investigations revealed that ELID CG-grinding can be used to successfully achieve better surface roughness. (3) The ELID grinding method can be used to fabricate machined surfaces exhibiting desirable characteristics for hard AlN ceramics. The final finishing using a #30000 wheel produced an extremely smooth ground surface roughness of 0.008 μm Ra. Kazutoshi Katahira (1973) Doctor Engineering (University of Ibaraki). He’s senior scientist at RIKEN (The Institute of Physical and Chemical Research) since 2007, visiting scholar at UC Berkeley since 2009, and visiting scientist at Keio University since 2001. The author proposes a method for actively and efficiently implementing surface modifications (functionalization) to workpieces during precision fabrication (grinding/cutting). According to this method, a mechanical-chemical reaction phenomenon, yet to be sufficiently clarified, between tool material and workpiece material can be controlled. Research of this method is considered to be of very high technological value. And using this method, the author has succeeded in developing a micro-tool having a diameter of less than 1 μm. The author has published the highly valued results, and was a recipient of the 2008 F.W. Taylor Medal of CIRP. Since then, this method has been attracting considerable attention in production technology areas such as ultra-precision molds and bioimplant components.

Nano level surface finishing technology of advanced ceramics – ELID (electrolytic in-process dressing)