Development of a 45° tilted on-machine measuring system for small optical parts

H. Suzuki, T. Onishi, T. Moriwaki, M. Fukuta, J. Sugawara

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A new contact type of on-machine measuring system is developed in order to measure aspherical optical parts with steep surface angle for large numerical aperture (NA). A ceramic air slider made of SIALON is adopted for the measurement probe because of its low thermal expansion coefficient, high rigidity and light weight. A high accuracy glass scale is employed to reduce the thermal drift of the displacement gauge. The air slider or the measuring probe is tilted for 45° against the aspherical workpiece axis, and the probe is scanned over the workpiece surface, so as to keep the contact angle between the probe axis and the contact surface constant in order to reduce the change in the probe friction force.

Original languageEnglish
Pages (from-to)411-414
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Volume57
Issue number1
DOIs
Publication statusPublished - May 12 2008
Externally publishedYes

Keywords

  • Measuring instrument
  • Mold
  • Ultra precision

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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