Nanometric grinding of axisymmetric aspherical mould inserts for optic/photonic applications

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Nanometric grinding technologies have been developed for fabricating axisymmetric and aspherical mould inserts of cemented tungsten carbide for optical/photonic uses. In this work, a process for truing and dressing ultrafine diamond wheels for nanometric grinding, including the wheel evaluation techniques, was successfully developed. This enabled the achievement of a grain pack density of 87% for the wheels with a mesh size of 3000. A compensation method was proposed to minimise the effect of the initial wheel dimensional and profile errors through the integration of a ‘dummy’ grinding procedure to the grinding process. With the developed grinding protocol, cemented tungsten carbide aspherical mould inserts of 6 and 1 mm in diameters with profile accuracies of ~0.4 μηι in PV value and average surface roughness of below 10 nm were fabricated after only one actual grinding cycle.

Original languageEnglish
Pages (from-to)71-84
Number of pages14
JournalInternational Journal of Machining and Machinability of Materials
Volume2
Issue number1
DOIs
Publication statusPublished - 2007 Jan 1

Keywords

  • aspherical profile
  • compensation
  • mould insert
  • nanometric grinding
  • truing and dressing
  • tungsten carbide

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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