2026-02-20 東京大学,理化学研究所,高輝度光科学研究センター
工業的金属加工プロセスの超高速レントゲン診断
＜関連情報＞
- https://www.rcast.u-tokyo.ac.jp/ja/news/release/20260220_1.html
- https://pubs.aip.org/aip/rsi/article-abstract/97/2/023703/3380579/High-speed-imaging-of-cutting-and-electrical
高強度100 keV X線を用いた薄い金属および流体の切断および放電加工（EDM）の高速画像化
High-speed imaging of cutting and electrical discharge machining (EDM) in thin metals and fluids using high-intensity 100 keV x rays
Hidekazu Mimura;Gota Yamaguchi;Hiroto Motoyama;Satoru Egawa;Jianli Guo;Yujiro Hayashi;Hirokatsu Yumoto;Takahisa Koyama;Hiroshi Yamazaki;Yasunori Senba;Shunji Goto;Ichiro Inoue;Kenji Tamasaku;Taito Osaka;Jumpei Yamada;Haruhiko Ohashi;Makina Yabashi
Review of Scientific Instruments Published:February 20 2026
DOI:https://doi.org/10.1063/5.0279761
Conventional machining methods, such as cutting and electrical discharge machining (EDM), have significantly contributed to the manufacturing industry for a long time. Despite their extensive development history, the underlying machining mechanisms remain unclear because direct observation of actual cutting and EDM processes inside metals and fluids has been impossible. In this study, we employed an intense, high-energy x-ray beam from an undulator source to visualize the motion of tools and the processing surfaces during cutting and EDM processes. The 100-keV x rays with a flux density of 1013 photons/mm2 enabled non-destructive observation inside metals at a high frame rate of 5000 fps. This study demonstrates that conventional metal machining processes, including interactions under fluids, the motion of tools, and the change of the processing surface during drilling and small-hole EDM, can be observed clearly. The developed x-ray imaging system can be applied to analyzing various actual machining phenomena in both traditional and non-traditional processes.
