Investigation of phenomenon of ultrasonic vibration cutting by using internal stress distribution based on high-speed polarization capturing

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289014
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Nagaoka University of Technology
• Principal Investigator: ISOBE Hiromi 長岡技術科学大学, 工学(系)研究科(研究院), 准教授 (60272861)
• Co-Investigator(Kenkyū-buntansha): 伊藤 義郎 長岡技術科学大学, 工学(系)研究科(研究院), 教授 (60176378) ; 丸山 耕一 秋田工業高等専門学校, その他部局等, 准教授 (90302934) ; 原 圭祐 一関工業高等専門学校, その他部局等, 准教授 (30515812)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 超音波切削加工 / 光弾性法 / ストロボ撮影 / 応力分布

Outline of Final Research Achievements

The visualization system of stress distribution under ultrasonic vibration-assisted cutting condition is constructed to investigate the cutting phenomenon. The instantaneous stress distribution on workpiece was visualized by photoelastic method in combination of pulse laser emission synchronized with vibration of cutting edge. Orthogonal cutting test was carried out at low cutting speed relative to vibration speed. The photographic system divided the ultrasonic vibration period of 36.2 μs into 360 frames. It was experimentally confirmed that the stress distribution under vibration-assisted condition showed the periodical change synchronized with insert vibration. The imaging system is able to show the periodic change of stress distribution in ultrasonic frequency band. Remnants formed due to elastic deformation of the workpiece were examined. The vibration cutting dramatically reduced the elastic deformation and the vibration amplitude had effect on the amount of remnant thickness.

Free Research Field

工学