Single-point diamond turning of CaF2 for nanometric surface

Jiwang Yan, Jun'ichi Tamaki, Katsuo Syoji, Tsunemoto Kuriyagawa

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Single-crystal CaF2 is an important optical material. In this work, single-point diamond turning experiments were performed to investigate the nanometric machining characteristics of CaF2. The effects of tool feed, tool rake angle, workpiece crystal orientation and cutting fluid were examined. It was found that two major types of microfracturing differing in mechanism limited the possibility of ductile regime machining. The critical conditions for microfracturing depend strongly on the tool rake angle and the type of cutting fluid. The results also indicate that one type of the microfractures is caused by thermal effect, and can be completely eliminated by using a sufficiently small undeformed chip thickness and an appropriate negative rake angle under dry cutting conditions. Continuous chips and ductile-cut surfaces with nanometric roughness were generated.

Original languageEnglish
Pages (from-to)640-646
Number of pages7
JournalInternational Journal of Advanced Manufacturing Technology
Volume24
Issue number9-10
DOIs
Publication statusPublished - 2004 Nov 1
Externally publishedYes

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Keywords

  • CaF
  • Calcium fluoride
  • Diamond turning
  • Dry cutting
  • Ductile regime machining
  • Microfracture

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

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