Development of Spherical Lens ELID Ggrinding System by Desk-top 4-axes Machine Tool(Nanoprecision Elid grinding)

Abstract

To realize efficient grinding of a spherical lens, in this study, the authors developed an ELID grinding system by applying the CG (curb generator) method to the 4-axes desktop machine tool TRIDER-X designed based on the concept of a micro workshop. The system comprises of a 4-axes desktop machine tool mounted with a CG unit developed using micro abrasives grinding wheels above #12000 on an ELID grinding system. The grinding wheels used cast iron bond diamond abrasives #324, #2000, #4000 and metal resin bond diamond abrasives #12000. Grinding was conducted on light barium flint glass, and fundamental experiments were carried out by the CG method. As a result, it was confirmed that grinding can be carried out stably without burning in the use of grinding wheels made of micro abrasives above #12000.