As the processed liquid it mounts locks work in processed inside the tank restoration discharge unrestrictedly it provides the engraving small hole compound electrical discharge machining manner null which uses

摘要

PROBLEM TO BE SOLVED: To provide a fine hole electric discharge machine capable of controlling the liquid level height of a machining liquid, a die sinking and fine hole composite electric discharge machine, and a die sinking and fine hole composite electric discharge machining method using this device.;SOLUTION: This fine hole electric discharge machine has the Z axis for controlling lifting of a bar-shaped electrode 37 for machining at least a fine hole, and the W axis for controlling lifting of an electrode guide 39 for guiding a lower end part of the bar-shaped electrode; and is characterized in that a work W is placed and fixed in a machining tank 15 arranged, so as to be capable of freely filling and discharging the machining liquid 13, a partition plate 77 for adjusting the liquid level height of the machining liquid is liftably arranged along a cutout window 57 arranged in the machining tank, a W axis slide 35 having the electrode guide in a lower end part is liftably arranged, a master cylinder 99 is arranged for lifting by interlocking with lifting of the W axis slide, a slave cylinder 93 joined to the master cylinder via a pipe is connected and arranged via a partition plate driving mechanism, and the partition plate is lifted by interlocking with the lifting of the W axis slide.;COPYRIGHT: (C)2005,JPO&NCIPI