Investigation on the ultra-precision grinding performance of optical glass lens BK7 with rubber-bonded wheels

Yuya Kawana, Takumi Suetomi, Yuta Mizumoto, Yasuhiro Kakinuma, Masahiko Fukuta, Katsutoshi Tanaka

Research output: Contribution to conferencePaperpeer-review

Abstract

Large aperture lenses which are used for single-lens reflex cameras and television cameras are manufactured by polishing requiring sufficient removal amount with a few micrometer depth to rid micro clacks completely after ultra-precision grinding. However, a prolonged polishing deteriorates the shape of the lens, which is accurately produced by the grinding process. In order to reduce the amount of polishing, ductile-mode ultra-precision grinding is demanded. In this study, The rubber-bonded wheel were employed to enhance the grinding performance. Natural rubber and chloroprene rubber bonded wheels, which have different hardness, were chosen, and the influence of the hardness of rubber-bonded wheel on the ground surface was investigated. By using chloroprene rubber-bonded wheel, the better surface quality was achieved. Softer rubber is assumed to enhance the surface quality and suppress the brittle fracture generation.

Original languageEnglish
Pages920-925
Number of pages6
Publication statusPublished - 2017
Event20th International Symposium on Advances in Abrasive Technology, ISAAT 2017 - Okinawa, Japan
Duration: 2017 Dec 32017 Dec 6

Conference

Conference20th International Symposium on Advances in Abrasive Technology, ISAAT 2017
CountryJapan
CityOkinawa
Period17/12/317/12/6

Keywords

  • Cross grinding
  • Elasticity of rubber bonded wheel
  • Optical glass lens BK7
  • Rubber bonded-diamond wheel
  • Ultra-precision grinding

ASJC Scopus subject areas

  • Mechanics of Materials
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Materials Science(all)

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