Stabilization of removal rate in small tool polishing of glass lenses

2019 Fiscal Year Final Research Report

• Project/Area Number: 19K21070
• Project/Area Number (Other): 18H05893 (2018)
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund (2019); Single-year Grants (2018)
• Review Section: 0301:Mechanics of materials, production engineering, design engineering, fluid engineering, thermal engineering, mechanical dynamics, robotics, aerospace engineering, marine and maritime engineering, and related fields
• Research Institution: Osaka University
• Principal Investigator: Satake Urara 大阪大学, 工学研究科, 助教 (70828409)
• Project Period (FY): 2018-08-24 – 2020-03-31
• Keywords: 研磨加工

Outline of Final Research Achievements

Polishing process of surface of glass lenses as key components of cameras has serious problems including an unstable removal rate over polishing time. In this study, we investigated the effect of the adhesion of workpiece debris to the polishing pad surface on the removal rate and the relation between the slurry flow on the polishing pad surface and the adhesion of the workpiece debris. On the basis of the findings, we developed new polishing tools which can achieve the stable removal rate.

Free Research Field

生産加工

Academic Significance and Societal Importance of the Research Achievements

本研究では，工具表面へのレンズ切りくずの付着が除去能率に及ぼす影響，および工具表面上における加工液の流れがレンズ切りくずの付着に及ぼす影響を明らかにした．研磨加工の最も基本的な要素である“工具”と“加工液”の挙動に加え，これまで挙動の解明がほとんど行われていない“切りくず”の挙動を明らかにした点で学術的意義が高いと言える．また，本研究で開発した工具ユニットは，スモールツール研磨加工の加工コスト低減に寄与することが期待されるものであり，高精度非球面レンズの低価格化を実現する技術として社会的意義も高いと言える．