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Proceedings Paper

Development of beryllium-mirror turning technology
Author(s): Jones B. Arnold
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Paper Abstract

Because of the unique properties of beryllium (Be) and the advantages of single point turning, a development program has been instituted to single point turn beryllium as a means to produce optics. Initial effort to diamond turn beryllium resulted in less than desirable results and development efforts were directed at finding a more suitable tool material. Both single and polycrystalline tool materials were evaluated and cubic boron nitride (CBN) was found to produce the better results. Tool wear has been the primary limitation in precision machining beryllium and advances have allowed a two order-of-magnitude reduction in this problem. After considerable efforts, results with CBN appear to be approaching a limit, and diamond, as tool material, was re-evaluated with promising results. A development program is now under way to determine if diamond may be used to machine larger and more complex beryllium parts.

Paper Details

Date Published: 1 September 1991
PDF: 10 pages
Proc. SPIE 1485, Reflective and Refractive Optical Materials for Earth and Space Applications, (1 September 1991); doi: 10.1117/12.46527
Show Author Affiliations
Jones B. Arnold, Oak Ridge National Lab. (United States)

Published in SPIE Proceedings Vol. 1485:
Reflective and Refractive Optical Materials for Earth and Space Applications
Max J. Riedl; Robert R. Hale; Thomas B. Parsonage, Editor(s)

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