| 摘要 |
This fine hole electrical discharge machine (100) applies voltage between a fine hole machining electrode (116) and a workpiece (130) to cause discharge, and machines a fine hole in the workpiece by using energy of the discharge. The fine hole electrical discharge machine (100) comprises: a bendable guide tube (18) having a hollow portion through which the electrode (116) is inserted; and a tube holder (20) that supports the leading end of the guide tube (18) and allows the leading end of the guide tube (18) to be inclined at a desired angle. Thus, even when the workpiece has a complicated shape, like a blisk, having a large number of turbine blades arranged in the circumferential direction, a fine hole can be machined by accurately positioning the electrode so as to orient the electrode toward a target machining point on a surface of the workpiece without involving interference with the workpiece. |
