A core moving device includes a core adsorption holding part which adsorbs a core cut out of a workpiece with a magnet and moves the core, in which the core adsorption holding part includes a rod member in which a distal end portion thereof is constituted of the magnet, a cylindrical member into which the rod member is inserted and which, on one hand, moves backward to expose a distal end surface of the rod member so that the core is adsorbed to the distal end surface of the rod member and, on the other hand, moves forward to protrude from the distal end surface of the rod member so that the core is removed from the distal end surface of the rod member, and a cylindrical member drive unit which at least moves the cylindrical member forward.

A core moving device includes a core adsorption holding part which adsorbs a core cut out of a workpiece with a magnet and moves the core, in which the core adsorption holding part includes a rod member in which a distal end portion thereof is constituted of the magnet, a cylindrical member into which the rod member is inserted and which, on one hand, moves backward to expose a distal end surface of the rod member so that the core is adsorbed to the distal end surface of the rod member and, on the other hand, moves forward to protrude from the distal end surface of the rod member so that the core is removed from the distal end surface of the rod member, and a cylindrical member drive unit which at least moves the cylindrical member forward.

The invention discloses an electrode wire for electro-discharge machining. The electrode wire comprises a core material and a surface metal layer, and a transition layer is arranged between the core material and the surface metal layer, wherein the core material comprises a brass alloy as a main component, the surface metal layer comprises zinc oxide, the transition layer comprises a copper-zinc alloy as a main component, and irregular cracks are distributed on the zinc oxide layer. The invention also provides a method for manufacturing the electrode wire, which can improve the cutting efficiency, machining yield and cutting quality of the manufactured electrode wire.

The invention discloses an electrode wire for electro-discharge machining. The electrode wire comprises a core material and a surface metal layer, and a transition layer is arranged between the core material and the surface metal layer, wherein the core material comprises a brass alloy as a main component, the surface metal layer comprises zinc oxide, the transition layer comprises a copper-zinc alloy as a main component, and irregular cracks are distributed on the zinc oxide layer. The invention also provides a method for manufacturing the electrode wire, which can improve the cutting efficiency, machining yield and cutting quality of the manufactured electrode wire.

A control device for a wire electric discharge machine includes: a shape analysis portion which looks ahead a machining program, and analyzes a machined shape of a workpiece; a machining path creation portion which creates machining paths of identical circular arc shape offsetting from a machined shape analyzed, wherein the offset value differs for the machining paths, and shape of a corner part are identical circular arc shape; a machining path creation portion which creates machining paths of concentric circle shape offsetting from a machined shape analyzed, wherein the offset value differs for the machining paths, and shape of a corner part are concentric circle shape; and a machining path selection portion which selects either of the machining paths of identical circular arc shape and concentric circle shape, based on at least one among the machining program, machined shape analyzed, and the machining paths of identical circular arc shape and concentric circle shape.

A control device for a wire electric discharge machine includes: a shape analysis portion which looks ahead a machining program, and analyzes a machined shape of a workpiece; a machining path creation portion which creates machining paths of identical circular arc shape offsetting from a machined shape analyzed, wherein the offset value differs for the machining paths, and shape of a corner part are identical circular arc shape; a machining path creation portion which creates machining paths of concentric circle shape offsetting from a machined shape analyzed, wherein the offset value differs for the machining paths, and shape of a corner part are concentric circle shape; and a machining path selection portion which selects either of the machining paths of identical circular arc shape and concentric circle shape, based on at least one among the machining program, machined shape analyzed, and the machining paths of identical circular arc shape and concentric circle shape.

Provided is a prediction device, to which one or more wire electrical discharge machines are connected, the one or more wire electrical discharge machines each performing machining on an object to be machined according to a predetermined machining condition while moving a wire electrode relatively with respect to the object to be machined along a machining path, the prediction device including a prediction unit that predicts, for a predetermined component constituting the wire electrical discharge machine, a predicted rate of consumption indicative of a rate of consumption based on the machining condition when the wire electrode is moved relatively by a unit distance, and a display unit that displays the predicted rate of consumption of the component.

Provided is a prediction device, to which one or more wire electrical discharge machines are connected, the one or more wire electrical discharge machines each performing machining on an object to be machined according to a predetermined machining condition while moving a wire electrode relatively with respect to the object to be machined along a machining path, the prediction device including a prediction unit that predicts, for a predetermined component constituting the wire electrical discharge machine, a predicted rate of consumption indicative of a rate of consumption based on the machining condition when the wire electrode is moved relatively by a unit distance, and a display unit that displays the predicted rate of consumption of the component.

An electrode wire for electro-discharge machining includes a core wire including a first metal including copper and having one of phases , +, and , a first alloy layer formed at a boundary region between the core wire and a second metal plated on an outer surface of the core wire due to mutual diffusion between the core wire and the second metal and having a phase , and a second alloy layer formed due to diffusion of the first metal to the second metal and having a phase and/a phase . A core wire material is erupted onto a surface of the electrode wire for electro-discharge machining, which includes the core wire, the first alloy layer, and the second alloy layer, along cracks appearing on the second alloy layer, so that a plurality of grains are formed on the surface of the electrode wire.

An electrode wire for electro-discharge machining includes a core wire including a first metal including copper and having one of phases , +, and , a first alloy layer formed at a boundary region between the core wire and a second metal plated on an outer surface of the core wire due to mutual diffusion between the core wire and the second metal and having a phase , and a second alloy layer formed due to diffusion of the first metal to the second metal and having a phase and/a phase . A core wire material is erupted onto a surface of the electrode wire for electro-discharge machining, which includes the core wire, the first alloy layer, and the second alloy layer, along cracks appearing on the second alloy layer, so that a plurality of grains are formed on the surface of the electrode wire.