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Proceedings Paper

Electrolytically assisted ductile-mode diamond grinding of BK7 and SF10 optical glasses
Author(s): Matthew J. Ball; N. A. Murphy; Paul Shore
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Paper 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.

Paper Details

Date Published: 1 April 1992
PDF: 9 pages
Proc. SPIE 1573, Commercial Applications of Precision Manufacturing at the Sub-Micron Level, (1 April 1992); doi: 10.1117/12.57741
Show Author Affiliations
Matthew J. Ball, Pilkington plc (United Kingdom)
N. A. Murphy, Pilkington plc (United Kingdom)
Paul Shore, Cranfield Unit for Precision Engineering (United Kingdom)

Published in SPIE Proceedings Vol. 1573:
Commercial Applications of Precision Manufacturing at the Sub-Micron Level
Lionel R. Baker, Editor(s)

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