Development of an optical method for evaluation of three-dimensional tool edge form with a high resolution beyond the diffraction limit

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13839
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Production engineering/Processing studies
• Research Institution: Tohoku University
• Principal Investigator: Shimizu Yuki 東北大学, 工学研究科, 准教授 (70606384)
• Co-Investigator(Renkei-kenkyūsha): GAO Wei 東北大学, 大学院工学研究科, 教授 (70270816)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 精密計測 / 機械工学 / 生産工学 / 加工計測 / 精密位置決め

Outline of Final Research Achievements

For the quantitative evaluation of edge forms of next-generation high-precision cutting tools, a measurement method, in which a focused laser beam referred to as the micro-laser probe is employed to realize non-contact and high-speed tool edge evaluations, has been developed. A prototype optical setup with a high-precision objective lens for the micro-laser probe has been developed, and its basic characteristics have been evaluated in experiments. The experimental results have demonstrated that the developed micro-laser probe has a high measurement resolution beyond the diffraction limit for tool edge measurement. It has also been verified that the developed micro-laser probe can be applied for the quantitative evaluation of a tool edge contour. Furthermore, a feasibility of the micro-laser probe for evaluation of a tool cutting edge radius has also been verified throughout theoretical and experimental investigations.

Free Research Field

精密工学