ELECTROLYSIS/LASER COMBINED MACHINING METHOD AND ELECTROLYSIS/LASER COMBINED MACHINING SYSTEM

摘要

PROBLEM TO BE SOLVED: To permit both of improvement of a machining speed and improvement of machining quality of electrolysis/laser combined machining by suppressing re-passivation accompanied by machining progression.;SOLUTION: An anodic oxide film is formed on the whole outer surface of a metal work-piece and a passive film of a part which forms a pattern hole, of the anodic oxide film is removed by laser irradiation. Thereafter, electrolytic machining is performed by using machining liquid which contains at least halide ions and metal is removed from a part where the passive film is removed. Therein, by monitoring a machining current upon the electrolytic machining, it is determined that the anodic oxide film is reformed on the whole inner surface of a part from which the anodic oxide film is removed, and film removal and electrolytic machining of a pattern hole bottom surface by means of laser irradiation is repeated until the pattern hole is penetrated or arrives at a predetermined depth.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT