The present invention provides a non-contact wire array tension control device for controlling a plurality of tension respectively corresponding to a plurality of electrical discharge wires, including delivering spools and electromagnets. The delivering spool has a magnetic end and a wire outputting end, the wire outputting end is coupled with an electrical discharge wire for outputting the electrical discharge wire. A plurality of electromagnets are coupled to the corresponding magnetic end for controlling a spin rate of the corresponding delivering spool, wherein the spin rate of the corresponding delivering spool is controlled by adjusting a magnetic force generated by the electromagnet. Moreover, a magnetic direction of the electromagnet is parallel to an axial direction of the delivering spool. The invention uses the electromagnets to control the magnetic damping force of the delivering spools for simultaneously controlling the tension of the electrical discharge wires by non-contact method.

The disclosure provides a wire electric discharge machine which has a simple configuration and can make a wire electrode fed to a machining position rotate around an axis. The wire electric discharge machine for machining a workpiece includes an upper wire guide and a lower wire guide, which stretch a wire electrode therebetween, and a rotator. A position of the rotator is changed, whereby the wire electrode is rotated around an axis.

The disclosure provides a wire electric discharge machine which has a simple configuration and can make a wire electrode fed to a machining position rotate around an axis. The wire electric discharge machine for machining a workpiece includes an upper wire guide and a lower wire guide, which stretch a wire electrode therebetween, and a rotator. A position of the rotator is changed, whereby the wire electrode is rotated around an axis.

In a wire electrical discharge machining device, a wire electrode released from a wire bobbin can be supplied toward a wire electrical discharge machining portion without generating permanently bending or twisting. A first pulley, which receives a wire electrode fed out from a wire bobbin and delivers the wire electrode to the downstream side, is disposed to wind the wire electrode WE to a first delivery position of an outer peripheral portion opposite to a first reception position across a central portion in a radial direction and deliver the wire electrode WE downward. The first pulley is swingable in the horizontal direction with one end in the radial direction as a fulcrum. The swing fulcrum is disposed, in the width direction of the wire bobbin, within a range from one end to the other end in the width direction of the wire bobbin.

In a wire electrical discharge machining device, a wire electrode released from a wire bobbin can be supplied toward a wire electrical discharge machining portion without generating permanently bending or twisting. A first pulley, which receives a wire electrode fed out from a wire bobbin and delivers the wire electrode to the downstream side, is disposed to wind the wire electrode WE to a first delivery position of an outer peripheral portion opposite to a first reception position across a central portion in a radial direction and deliver the wire electrode WE downward. The first pulley is swingable in the horizontal direction with one end in the radial direction as a fulcrum. The swing fulcrum is disposed, in the width direction of the wire bobbin, within a range from one end to the other end in the width direction of the wire bobbin.

A device for identifying a spark-erosion wire conditioned on a coil includes a radio tag, rigidly connected to the coil and accessible for reading data that it supports, identification data of the wire, supported by the radio tag, a data-reading device, associated with a wire spark-erosion machine, capable of reading the identification data supported by the radio tag of the coil, and capable of transmitting the identification data to the wire spark-erosion machine, an acquisition device for generating and recording over time as identification data, in the radio tag, historical data selected from the group that consists of historical usage data describing usage conditions of the wire supported by the coil and historical constraint data describing physical constraints to which the wire supported by the coil is subjected.

A device for identifying a spark-erosion wire conditioned on a coil includes a radio tag, rigidly connected to the coil and accessible for reading data that it supports, identification data of the wire, supported by the radio tag, a data-reading device, associated with a wire spark-erosion machine, capable of reading the identification data supported by the radio tag of the coil, and capable of transmitting the identification data to the wire spark-erosion machine, an acquisition device for generating and recording over time as identification data, in the radio tag, historical data selected from the group that consists of historical usage data describing usage conditions of the wire supported by the coil and historical constraint data describing physical constraints to which the wire supported by the coil is subjected.

To provide a wire collection device of a wire electrical discharge machine capable of collecting a used wire electrode even while a power supply for the wire electrical discharge machine is not turned off and even during electrical discharge machining. A wire collection device of a wire electrical discharge machine comprises: a first collection box having a wire inlet provided at a top portion; a second collection box having a wire inlet provided at a top portion, housed in the first collection box, and capable of being taken out to the outside through an access port formed in the first collection box; and a partition plate provided to be openable and closable for partitioning the interior of the first collection box into lower space for housing the second collection box and upper space, and for making communication between the lower space and the upper space.

A vibration assisted wire machining device is provided, the vibration assisted wire machining device allows a metal wire to be driven by a bi-axial sinusoidal vibration source during a wire machining process, wherein the bi-axial sinusoidal waveforms have the same amplitude, and preferably, the bi-axial sinusoidal waveforms are synchronous and always have a vibration phase difference of 90 degrees. Therefore, the present invention can reduce wire breakage risks and improve wire-cutting efficiency, and raise machining stability and material removal rate of a wire-electrical discharge machining (Wire-EDM) process performed on a workpiece, as well as achieve desirable precision of a geometric shape. It also relates to a vibration assisted wire machining device that enables metal wires associated with the abrasive slurry formed of hard abrasive grains, for performing bi-axial vibration assisted abrasive cutting or abrasive grinding on the workpiece.

To provide a wire electrical discharge machine for which the machining precision of corner parts and corner exit parts in a workpiece are improved. A wire electrical discharge machine includes a machining path compensation unit which compensates a machining path, in a case of creating a corner part which is a circular arc as a second machining block, by compensating a position of a center of the circular arc of the second machining block by way of a first compensation vector calculated based on at least one indicator among the four indicators of deflection of a wire electrode, etc., and inserting a linear first compensation block between an end point of the first machining block and a start point of a second machining block which was compensated, and by eliminating a predetermined distance from the start point of a third machining block, creates a starting point of this third machining block, and then inserts a second compensation block between the end point of the compensated second machining block and the created starting point of the first machining block.