ELECTRIC DISCHARGE MACHINING METHOD

摘要

An electric discharge machining method for forming a tilted deformed small hole (20) by slotting it from the surface (1a) of a work (1), comprising a positioning and holding step for diagonally holding the work (1) so that one inner surface of the target machined shape of the deformed small hole (20) is positioned parallel with a Z-axis and a machining step for making an electrode (5) slot into the work (1) by a specified amount in the Z-direction, moving the electrode (5) along the outline of the target machined shape in an XY plane, and slotting the deformed small hole by repeating these operations.