| 摘要 |
<p>Disclosed is a wire electric discharge machining apparatus (10) comprising a wire-driving system (132) for feeding a wire electrode (130) while opposing it to a workpiece (W), and a power supply unit (170, 172) for supplying electric power to the wire electrode (130), wherein electric discharge is effected between the wire electrode (130) and the workpiece (W) to machine the workpiece (W) to have an arbitrary shape. The wire electrode (130) is allowed to make approach to the workpiece (W) to effect the electric discharge between the wire electrode (130) and the workpiece (W) so that the workpiece is machined to have an arbitrary shape, while a suction mechanism (122) is used to suck undesirable matters including sludge together with a working fluid (120) via cylindrical members (124) from holes (20) formed in the workpiece (W). Accordingly, it is possible to easily form, by means of the wire electric discharge machining, a machining groove (180) having a narrow width and a large depth under a condition deviated from the general standard machining condition for the wire electric discharge machining, for example, even for a workpiece (W) having a large thickness. <IMAGE></p> |
