Removal of diamond-turning signatures on x-ray mandrels and metal optics by fluid-jet polishing

A. Beaucamp, R. Freeman, R. Morton, Karthik Ponudurai, D. D. Walker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes a major advance in the post-treatment of diamond-turned surfaces to remove repetitive micro-structure; a result which could have a major beneficial impact on fabrication of Walter-type X-ray mandrels, and metal mirrors. Diamond-turning is highly deterministic and versatile in producing axially-symmetric forms, and through fast-tool servos, non-axially symmetric, free-form and micro-structured surfaces. However, the fine turning marks left in the metal surface limit performance. In this paper, we describe how fluid-jet polishing under CNC control can be used to eliminate these structures, without significantly degrading the surface roughness or form produced by the prior turning operation.

Original languageEnglish
Title of host publicationAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation - Marseille, France
Duration: 2008 Jun 232008 Jun 28

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7018
ISSN (Print)0277-786X

Conference

ConferenceAdvanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Country/TerritoryFrance
CityMarseille
Period08/6/2308/6/28

Keywords

  • Diamond-turn
  • Polish
  • Texture

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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