Electrolytically assisted ductile-mode diamond grinding of BK7 and SF10 optical glasses

Matthew J. Ball; N. A. Murphy; Paul Shore

doi:10.1117/12.57741

1 April 1992 Electrolytically assisted ductile-mode diamond grinding of BK7 and SF10 optical glasses

Matthew J. Ball, N. A. Murphy, Paul Shore

Proceedings Volume 1573, Commercial Applications of Precision Manufacturing at the Sub-Micron Level; (1992) https://doi.org/10.1117/12.57741
Event: SIRA, 1991, London, United Kingdom

Abstract

Samples of BK7 and SF10 optical glass were 'ductile' ground using a cast-iron diamond ring tool with an electrolytic in-process dressing system. Selected machining parameters gave nanometric quality surfaces (Ra < 2 nm) with minimal sub-surface damage. Relatively rough brittle fractured surfaces were obtained by machining the glasses with the same diamond wheel but without the assistance of electrolytic dressing. The grinding force (normal) generated whilst ductile machining was significantly greater than for brittle fracture grinding. The work described in this paper reveals a significant advance in the machining of optical glass. This novel and complex process requires further investigation to provide a full understanding of the science involved.

Citation Download Citation

Matthew J. Ball, N. A. Murphy, and Paul Shore "Electrolytically assisted ductile-mode diamond grinding of BK7 and SF10 optical glasses", Proc. SPIE 1573, Commercial Applications of Precision Manufacturing at the Sub-Micron Level, (1 April 1992); https://doi.org/10.1117/12.57741

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