5-axis Abrasive-assisted Electrochemical Jet Machining for Surface-processing of Difficult-to-machine Materials

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K17992
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Production engineering/Processing studies
• Research Institution: The University of Tokyo
• Principal Investigator: Zhao Yonghua 東京大学, 大学院工学系研究科(工学部), 助教 (90759052)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 5-axis EJM / Freeform surface

Outline of Final Research Achievements

Five-axis Jet-ECM can provide infinite possibilities in the machining of part sizes and shapes. However, this technique has not been developed. In this research, the characteristics and principles of the 5-axis Jet-ECM process were investigated through both experiments and simulations. It is found that the jet angle relative to the workpiece surface had significant influences on the Jet-ECM results. On the other hand, the jet direction had little influence on Jet-ECM. The performances of Jet-ECM of corners is greatly affected by the corner angles and geometric shapes. Special attentions must be given to the corner geometries in practice. Multiphysics-coupled simulation of Jet-ECM suggested that the electrolyte flow and current density distribution in the gap was significantly affected by the jet angle, which was verified by experiments. To achieve stable and constant machining results, the jet angle relative to the workpiece surface, usually perpendicular, must be kept constant.

Free Research Field

生産工学・加工学