Class / Patent application number | Description | Number of patent applications / Date published |
219690120 | Wire cutting | 85 |
20080217300 | WIRE-CUT ELECTRIC DISCHARGE MACHINE HAVING WIRE TENSION CONTROL FUNCTION - When a wire electrode is arranged along a traveling path by manual operation, a motor M1 for feeding the wire electrode to a workpiece is driven in response to a predetermined torque command from a control section with a switch SW1 on a side a. The wire electrode is connected, and a motor M2 for delivering the electrode from the wire is driven at a predetermined speed, whereby the electrode is run. Then, the switch SW1 is shifted to a side b and a switch SW2 to the side a, and the motor M1 is subjected to torque control such that a tension on the wire electrode detected by a tension detector is equal to a command tension. When a variation of the tension on the wire electrode is converged, the switches SW1 and SW2 are shifted to the side b, speed control of the motor M1 is performed so that detected tension is equal to the command tension, and electric discharge machining is started. | 09-11-2008 |
20080223827 | Wire retrieving device for cutting machine - A wire retrieving device for a cutting machine includes a block connected with an air source and a blowing path is defined through the block. A suction path is defined in a side of the block and has an oblique port formed in a surface of the block through which the discarded wire is sucked into the suction path which further has an engaging port communicating with the blowing path. A pushing member removably pushes the metal wire toward the block by an electromagnetic valve when the metal wire needs to be cut by an electrode unit. A pair of driving rollers located a down stream of the electrode unit and pulls the metal wire toward the upper mold. The discarded wire is blowing out from the blowing path and is collected in a collection tank via a tube. | 09-18-2008 |
20080245773 | Electrode Wire With Multi-Coated Layers For Electrical Discharge Machining and Method of Manufacturing the Same - An electrode wire with multi-coated layers for electrical discharge machining (EDM) is capable of fast and precisely machining a work piece for a desired shape without changing the electrode wire, and a method of manufacturing the electrode wire is obtained by performing the steps of manufacturing a core wire, coating the core wire with zinc, drying the coated core wire, diffusion-heat treating of the coated core wire, drawing a product from the coated core wire, and stabilization treating of the coated core wire in order. | 10-09-2008 |
20080251500 | CONTROLLER FOR WIRE-CUT ELECTRICAL DISCHARGE MACHINES - In a reference (n-th) machining pass, the wire travels along a machining route RTn and passes through a reentrant angular corner with wire position WMn, producing a workpiece edge Hn. In the following (n+1)-th machining pass, the wire travels along a machining route RTn+1, but the straight sections preceding and following the corner are replaced with a circular arc route so that the wire passes smoothly through a straight route, then a circular arc route, and then a straight route. The radius of curvature of the circular arc route is determined in the controller on the basis of the difference between the offset specified for the reference (n-th) machining pass and the offset specified for the (n+1)-th pass in which the circular arc route is inserted. Accordingly, the machining margin does not increase in the reentrant angular corner and the machining accuracy is thereby improved. | 10-16-2008 |
20080277383 | APPARATUS FOR REMOVING DEBRIS FROM THE CUTTING GAP OF A WORK PIECE ON A WIRE ELECTRONIC DISCHARGE MACHINE AND METHOD THEREFOR - A debris removal system for a wire electronic discharge machining (WEDM) apparatus has a fluid source. A pressurization device is coupled to the fluid source to pressurize a fluid from the fluid source. At least one fluid delivery nozzle is coupled to the pressurize device. The at least one fluid delivery nozzle is positioned behind a wire electrode of the WEDM apparatus and approximately perpendicular to the wire electrode to inject the pressurized fluid directly into an active cutting area between the wire and work piece. | 11-13-2008 |
20080283504 | Electrical Discharge Machine Apparatus for Reverse Taper Bores - An electrical discharge machining apparatus having a wire electrode and a guide system for machining reverse-taper bores in a workpiece, particularly cone-shaped bores. A guide body near the workpiece stabilizes a first portion of an electrode and a second portion of the electrode extends from the guide body terminating in a working tip. As the guide body is wobbled about the longitudinal axis of a desired workpiece bore, the electrode is advanced and the working tip of the electrode erodes progressively larger closed curves in the workpiece, resulting in a reverse taper bore in the workpiece. | 11-20-2008 |
20080290071 | METHOD FOR DETERMINING WIRE SUPPORTING POINT IN WIRE-CUT ELECTRICAL DISCHARGE MACHINE AND MEASURING MEMBER FOR PRACTICING THE SAME - A measuring member having a conical section with a known vertex angle is inserted into a guide hole through a trumpet-shaped inner surface (wire guiding surface) formed by rotating a convex about the axis of the guide hole. Then, the surface of the conical section of the measuring member stops at the point of tangential contact with the inner surface. The point at which the wire electrode is supported, measured from the reference wire supporting point, can be determined from the height of a specific point on the measuring member in the stopped state and the distance from this specific point to the vertex of the conical section of the measuring member. | 11-27-2008 |
20090014420 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - A wire electric discharge machining apparatus includes guide rollers, one electrode wire that is wrapped around each of the guide rollers to form cut wire portions spaced from one another between a pair of the guide rollers. A processing power supply feeds electric power to the individual cut wire portions through a power feed element, and a high frequency insulator has wound coils which are formed of the electrode wire and located between adjacent ones of the cut wire portions | 01-15-2009 |
20090101627 | ELECTRIC DISCHARGE MACHINE HAVING WIRE ELECTRODE CUTTING FUNCTION, AND WIRE ELECTRODE CUTTING METHOD - A wire electric discharge machine and a wire electrode cutting method capable of carrying out a wire electrode cutting process without need for an operator to input information on material or a diameter of a wire electrode. An electric current measuring device measures a value of an electrical current flowing through a wire electrode to which a voltage is applied. An electrical resistance of the wire electrode is detected based on the applied voltage and the measured value of the electrical current. A plurality of cutting conditions predetermined and stored for electrical resistances of different types of wire electrodes. A cutting condition for the wire electrode is determined based on the detected electrical resistance of the wire electrode and the stored plurality of cutting conditions, and the wire electrode is fusion-cut on the thus determined cutting condition. | 04-23-2009 |
20090139964 | WIRE-RECEIVING MECHANISM - A wire-receiving mechanism for holding electrical wire used to cut or burn through a metal work piece in wire electrical discharge machines (WEDMs) is disclosed. A passive wheel and an active wheel are disposed side by side with one another in a case body, the active wheel being capable of causing the passive wheel to rotate, wherein one side of the passive wheel has a driving unit defined thereon. The driving unit is disposed to penetrate through one side of the case body, and includes a driving member disposed to one side of the case body, an action member connected to the driving member and a sliding member connected to the action member for pushing the passive wheel, wherein a pretension spring is disposed at one side of the sliding member for controlling the gap between the passive wheel and the active wheel such that the processing wires can be stably held and conveyed. | 06-04-2009 |
20090194511 | WIRE ELECTRICAL DISCHARGE MACHINING - A wire electrical discharge machine (WEDM) including a motion platform, a sink, a workbench, a connecting element, a jib, a first head and a second head is provided. The sink is disposed separately above the motion platform, and the workbench is disposed in the sink. The workbench is connected to the motion platform via the connecting element such that the motion platform drives the workbench moving along a first direction and a second direction. Besides, the jib is fixedly connected with the sink, and the first head is disposed inside the sink and connected with the jib. The second head is disposed above the first head. Thus, the jib does not cause relative motion to the sink in order to avoid leaking. | 08-06-2009 |
20090212026 | WIRE ELECTRIC DISCHARGE MACHINING METHOD, SEMICONDUCTOR WAFER MANUFACTURING METHOD, AND SOLAR BATTERY CELL MANUFACTURING METHOD - Provided are a wire electric discharge machining method for poorly conductive materials, such as solar cell silicon, and a semiconductor wafer manufacturing method and a solar battery cell manufacturing method based on the wire electric discharge machining method. Electrical discharge machining of a high volume resistivity, hard and brittle materials, having a volume resistivity that is equal to or higher than 0.5 Ω·cm and equal to or lower than 5 Ω·cm is performed by applying a pulse voltage having a pulse width that is equal to or higher than 1 μsec and equal to or lower than 4 μsec and having a peak current at the time of machining a wire electrode that is equal to or higher than 10A and equal to or lower than 50A to a wire electrode and generating a discharge pulse between the wire electrode and a subject to be machined. | 08-27-2009 |
20090236318 | Wire Electric Discharge Machining Apparatus - A wire electric discharge machining apparatus can select a split guide formed from a pair of guide pieces, or an unsplittable dice guide, as an upper wire guide. An upper wire guide assembly includes a housing configured to selectively store the split guide or an adapter that the dice guide fitted into, and an actuator configured to move at least one of the pair of guide pieces. When the split guide is selected, a guide pipe configured to form a fluid jet can be moved downward through the upper wire guide assembly. When the dice guide is selected, an AWT jet nozzle configured to form a fluid jet can be attached to the adapter. Further, a jacket can be attached to the housing, the jacket having a fluid inlet configured to introduce fluid to be supplied to the AWT jet nozzle. | 09-24-2009 |
20100187203 | MULTI-WIRE ELECTRON DISCHARGE MACHINE - A multi-wire electron discharge machine includes a first wire electrode for creating an electrical discharge between the first electrode wire and a semiconductor ingot, a second wire electrode for creating an electrical discharge between the second electrode wire and the semiconductor ingot, and a wire guide for maintaining the first wire electrode in a spaced apart and generally parallel orientation with respect to the second wire electrode across a semiconductor ingot slicing area. | 07-29-2010 |
20110114603 | WIRE CUT ELECTRICAL DISCHARGE MACHINE - A wire cut electrical discharge machine is provided. The wire cut electrical discharge machine includes a base. At least two wire feeding and receiving components are disposed over the base. A working area is between the wire feeding and receiving components. At least two flaky wire electrodes are disposed in the working area, wherein ends of the flaky wire electrodes are respectively set on the wire feeding and receiving components. | 05-19-2011 |
20120000889 | ELECTRODE WIRE FOR WIRE ELECTRICAL DISCHARGE MACHINING, METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR ELECTRICAL DISCHARGE MACHINING USING THE SAME - A wire material having a copper-zinc alloy layer, which is formed by action of thermal diffusion, and a zinc layer on its circumference surface is subjected to processes, including from a step of drawing the wire material to a step of reducing the diameter of the product, to reliably crash the copper-zinc alloy layer into particles. The particles are embedded in the circumference surface of a core to integrate the diffusion alloy layer and zinc layer with the core and prevent the diffusion alloy layer and zinc layer from falling off from the core. In addition, in order to cover cracks formed in the copper-zinc alloy layer during wire drawing with a zinc thin film, wire drawing is performed at temperatures appropriate for maintaining good malleability and ductility of zinc. | 01-05-2012 |
20120031879 | WIRE-CUT ELECTRIC DISCHARGE MACHINE HAVING WORKPIECE MEASURING MECHANISM - A machining program used for machining a workpiece with a wire-cut electric discharge machine is used for measuring a shape of the workpiece. A wire electrode moved in a direction away from the workpiece by an offset command for machining is moved close to the workplace in workplace measurement after the machining. In other words, the wire electrode is moved in an opposite direction to an offset direction for the machining. Then, an end face position of the machined workpiece detected by a position of the wire electrode when the wire electrode comes in contact with the workpiece. | 02-09-2012 |
20120103943 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - A wire electric discharge machining apparatus that performs an electric discharge machining by applying a pulse voltage between a wire electrode ( | 05-03-2012 |
20120138576 | COMPOUND ELECTRICAL DISCHARGE MACHINING APPARATUS AND SMALL-HOLE ELECTRICAL DISCHARGE MACHINING MODULE THEREOF - The present invention relates to a compound electrical discharge machining (EDM) apparatus, which combines a small-hole EDM module and a wire-cut EDM apparatus and hence having the functions of small-hole and wire-cut EDM simultaneously. Thereby, in the compound EDM apparatus, a workpiece can be first processed by the small-hole EDM and subsequently by the wire-cut EDM without repositioning. Accordingly, automatic processing can be achieved. The inability of full automation in wire-cut EDM machines owing to lack of small-hole EDM functionality is improved. | 06-07-2012 |
20120152906 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - A wire electric discharge machining apparatus includes guide rollers and a single electrode wire that is wrapped around each of the guide rollers to form cut wire portions that are spaced from one another between pairs of the guide rollers. A processing power supply feeds electric power to the individual cut wire portions through a power feed element. A high frequency insulator includes wound coils of the electrode wire that are located between adjacent cut wire portions, and cores which close respective magnetic circuits of the individual coils. The magnetic circuits are magnetically insulated from one another. The power feed element is arranged between the individual cut wire portions and the individual coils, and the individual cut wire portions are insulated from one another at high frequencies by the individual coils. Voltages are impressed on the individual cut wire portions independently, so discharges can be generated simultaneously, in parallel. | 06-21-2012 |
20120217224 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS, WIRE ELECTRIC DISCHARGE MACHINING METHOD, THIN BOARD MANUFACTURING METHOD, AND SEMICONDUCTOR WAFER MANUFACTURING METHOD - A wire electric discharge machining apparatus is constructed in such a manner as to include: a wire electrode having a plurality of cutting wire portions that are separated from one another in parallel and are opposed to a workpiece; a machining power supply that generates a pulsed machining voltage; a plurality of power feed contact units that are electrically connected to the cutting wire portions and apply the machining voltage between the cutting wire portions and the workpiece; and a nozzle that ejects machining liquid from an ejection opening toward an electrode gap along the cutting wire portions. | 08-30-2012 |
20120223055 | WIRE-CUT ELECTRIC DISCHARGE MACHINE HAVING FUNCTION OF DETECTING UPPER SURFACE OF WORKPIECE - Upper and lower wire guides in a wire-cut electric discharge machine are moved until a wire electrode contacts with a workpiece, and after the contact, the upper and lower wire guides are moved backward to a position A which is away from the contact point at a fixed distance. Then, the upper wire guide is moved until the wire electrode contacts with the workpiece and the upper wire guide is returned to the position A. Subsequently, the lower wire guide is moved until the wire electrode contacts with the workpiece and the lower wide guide is returned to the position A. A coordinate value on the position where the wire electrode contacts with the workpiece is calculated by using position detection values which are obtained in the above respective steps, and board thickness is calculated from the coordinate value. | 09-06-2012 |
20120255934 | LIQUID-QUALITY ADJUSTING APPARATUS, LIQUID-QUALITY ADJUSTING METHOD, AND WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - The liquid-quality adjusting apparatus of the present invention includes: a water purifying part that deionizes a machining liquid; an anticorrosive part that exchanges ions in the machining liquid with anticorrosive ions; a conductivity measuring part that measures a measured value of conductivity of the machining liquid; a storage part that stores in advance a first reference value and a second reference value which are an upper limit value and a lower limit value of conductivity applicable to machining, respectively, and a third reference value which is between the first reference value and the second reference value; and a control part that performs control on the basis of the reference values stored in the storage part and the measured value of the conductivity of the machining liquid measured by the conductivity measuring part. | 10-11-2012 |
20120292292 | FEED CONTROL METHOD FOR WIRE CUTTING ELECTROCHEMICAL DISCHARGE MACHINING AND APPARATUS THEREOF - A feed control method for wire cutting electrochemical discharge machining is disclosed. The method determines whether a contact event has occurred using a wire electrode, based on variations in wire tension when being cut. A wire is cut with an ideal feed speed when the wire electrode is not in contact with a workpiece. | 11-22-2012 |
20120305530 | WIRE-CUT ELECTRIC DISCHARGE MACHINE WITH WIRE ELECTRODE CUTTING FUNCTION - In a wire electric discharge machine in which chuck part electrodes that hold a wire electrode are provided on the upper side of an upper wire guide and electrodes of a detecting part are provided on a lower stream side of the chuck part electrodes, a part, which contacts with the chuck part electrodes, of a surface of the wire electrode is hardened by locally cooling down the part by air blowing during energization to the wire electrode. Accordingly, wire metal powder is hardly generated from the wire electrode even though the wire electrode rubs against the chuck part electrodes. | 12-06-2012 |
20120312787 | ELECTRICAL DISCHARGE MACHINING APPARATUS AND ELECTRICAL DISCHARGE MACHINING METHOD - An electrical discharge machining apparatus includes a machining electrode that is one wire and includes a plurality of opposing sections with respect to a workpiece by being wound around a plurality of guide rollers, driving units that change a relative distance between the workpiece and the opposing sections, and a plurality of pulse generating units that apply electrical discharge machining pulses between the workpiece and the opposing sections, respectively, in which the pulse generating units are controlled such that application start times of electrical discharge machining pulses for adjacent opposing sections do not coincide with each other. | 12-13-2012 |
20130043216 | WIRE ELECTRIC DISCHARGE MACHINE HAVING POSITIONING ACCURACY COMPENSATION FUNCTION - Two contact detection jigs are spaced apart and attached on a table on which a workpiece to be machined by a wire electric discharge machine is placed, and first, under a state serving as a reference, a distance between these two contact detection jigs (a reference distance) is measured by bringing the wire electrode into contact with these contact detection jigs. Subsequently, in a state of actual use, the wire electrode is brought into contact with these contact detection jigs in the same manner, so that a distance between these two contact detection jigs (an actual distance) is measured. Then, based on the difference between the reference distance and the actual distance, the amount of compensation is obtained to compensate an instruction for moving the wire electrode with respect to the table. | 02-21-2013 |
20130043217 | WORKPIECE RETAINER, WIRE ELECTRIC DISCHARGE MACHINING DEVICE, THIN-PLATE MANUFACTURING METHOD, AND SEMICONDUCTOR-WAFER MANUFACTURING METHOD - A workpiece retainer retains a workpiece at a time of a cutting process by a wire electric discharge machining device that cuts a workpiece by electric discharge from wire electrodes that are spaced from each other and are arranged in parallel. The workpiece retainer is formed with a fitting portion, into which the workpiece is fitted substantially without any gap, and has an external shape such that at a time of cutting the workpiece retainer together with the workpiece fitted in the fitting portion, a length along the wire electrodes of a portion where the workpiece retainer and the workpiece face the wire electrodes becomes substantially constant during the cutting process of the workpiece. | 02-21-2013 |
20130112659 | POWER SUPPLY SYSTEM FOR WIRE ELECTRIC DISCHARGE MACHINING - A power supply system for wire electric discharge machining includes a first power supply circuit and a second power supply circuit. The first power supply circuit applies, to the machining gap, a voltage that induces a discharge. The second power supply circuit, which includes a low inductance line, supplies a current, which contributes to the machining, to the machining gap. A blocking diode is series-connected between the low inductance line and the machining gap. A container, which has a contact surface contacting with the blocking diode and contains a cooling liquid, is provided. | 05-09-2013 |
20130119023 | GRAPHITIZED EDM WIRE - An electrode wire for use in an electrical discharge machining apparatus includes a core having a surface and one of a metal, an alloy of a metal, and a combination of a metal and alloy of a metal. An adherent coating of graphite is metallurgically bonded to the surface of the core. | 05-16-2013 |
20130175242 | MAGNETIC SHAPE OPTIMIZATION - A method for efficiently machining magnets with curved surfaces is disclosed. The use of machining equipment capable of making curved cuts through magnetic material can allow significant cost and material savings, particularly when machining magnets with complementary surfaces. A process for using a series of cutting wires to simultaneously cut magnetic material into conformally shaped magnets is described. | 07-11-2013 |
20130180957 | METHOD OF RECOVERING A BONDING APPARATUS FROM A BONDING FAILURE - A method of recovering a bonding apparatus from a bonding failure to resume a normal operating state for semiconductor chip fabrication is disclosed. The bonding apparatus comprises: i) a bonding tool for bonding a wire between a semiconductor chip and a substrate; and ii) a position sensor. Specifically, the method comprises the steps of: a) the position sensor determining a position of the bonding tool when the bonding tool contacts a surface to bond the wire to the substrate; b) the bonding apparatus detecting a bonding failure caused by detachment of the semiconductor from the substrate based on the position of the bonding tool; and c) the bonding apparatus detaching the semiconductor chip from the wire. | 07-18-2013 |
20130180958 | FIXING MECHANISM OF WIRE GUIDE OF WIRE ELECTRIC DISCHARGE MACHINE - On a wire guide supporting face of a wire guide supporting part which supports a wire guide of a wire electric discharge machine, two wall faces which are orthogonal to the wire guide supporting face are formed to be arranged in a V shape. On the other hand, two planar parts which are abutted on the two orthogonal wall faces, which are arranged in the V shape, of the wire guide supporting part are formed on the wire guide. Then, the wire guide is fixed on the wire guide supporting part with a screw in a state in which the two orthogonal wall faces of the wire guide supporting part and the two planar parts of the wire guide are respectively abutted on each other. | 07-18-2013 |
20130186865 | WIRE ELECTRICAL DISCHARGE MACHINE CARRYING OUT ELECTRICAL DISCHARGE MACHINING BY INCLINING WIRE ELECTRODE - A wire electrical discharge machine is capable of step machining by setting only a position located anterior to a step portion of the workpiece during a setup operation before machining, without setting an inclination finishing position of a wire electrode after passing the step portion. A machining program is read, and when a wire electrode reaches a preset inclination starting position in front of a step position, inclination control of the wire electrode is started. Then, when the wire electrode has passed the position of the step portion, the inclination control of the wire electrode is finished. | 07-25-2013 |
20130193112 | WIRE ELECTRIC DISCHARGE MACHINE CAPABLE OF DETECTING MACHINING STATE AND DETERMINING AVERAGE VOLTAGE IN MACHINING GAP - In order to detect a machining state of a wire electric discharge machine, the state of a machining gap is classified into three categories; an open-circuit state in which electric discharge does not occur after a first predetermined level is reached or surpassed by a machining-gap voltage, an electric discharge state in which electric discharge occurs after a second predetermined level is reached or surpassed by the machining-gap voltage, whereby the machining-gap voltage becomes lower than the second predetermined level, and a short-circuit state wherein a third predetermined level is not reached or surpassed by the machining-gap voltage. An average voltage in the machining gap is determined based on voltages in these states and the number of cycles of voltage application to the machining gap, number of open-circuits, number of discharges, and number of short-circuits per unit time. | 08-01-2013 |
20130193113 | WIRE ELECTRIC DISCHARGE MACHINE AND WIRE ELECTRODE REMOVAL DEVICE - To provide a wire electrode removal device of a wire electric discharge machine, the wire electrode removal device including a wire-electrode guide unit that guides an end on a cut point side of a wire electrode cut by wire-electrode cut devices to outside of a running path, a rewind shaft that pressure-fixes the wire electrode on the cut point side guided by the wire-electrode guide unit with an end face thereof and rewinds the wire electrode on a columnar member having angular portions with subsequent rotational driving thereof, a rewind-shaft drive unit that drives the rewind shaft to perform pressure fixing or pressure releasing of the wire electrode with the rewind shaft, a scraper member that removes a wound wire electrode from the columnar member at a time of pressure releasing of the rewind shaft by the rewind-shaft drive unit, and a collection member that collects the removed wire electrode. | 08-01-2013 |
20130206730 | WIRE ELECTRIC DISCHARGE MACHINE HAVING FUNCTION FOR CONTROLLING MACHINING LIQUID TEMPERATURE - A wire electric discharge machine has a function for controlling the machining liquid temperature. When it is predicted that the machining liquid temperature rises linearly, the machining liquid begins to be warmed at time t | 08-15-2013 |
20130206731 | WIRE ELECTRIC DISCHARGE MACHINE PERFORMING DISTORTION REMOVING MACHINING - When contact between a wire electrode and a workpiece is detected while, after wire electric discharge machining is ended, the wire electrode is moved (retraced) in the direction opposite to the machining direction along the machining path, the movement of the wire electrode is stopped. The wire electrode is moved in the offset direction from the contact position. When the wire electrode and the workpiece are brought into a non-contact state, the non-contact state is detected, and the movement of the wire electrode is stopped. The wire electrode is returned from the non-contact position to the machining path, and the wire electrode is retraced along the machining path in the state where the detection of contact between the wire electrode and the workpiece is neglected. Then, an amount of distortion of the workpiece is calculated from the contact position and the non-contact position. | 08-15-2013 |
20130220979 | WIRE ELECTRICAL DISCHARGE MACHINE AND WIRE ELECTRICAL DISCHARGE METHOD FOR REDUCING MACHINING DAMAGE DURING CUTTING MACHINING AND ESCAPE MACHINING - A wire electrical discharge machine includes an approach control unit. The approach control unit relatively moves a wire electrode with respect to a workpiece while inclining the wire electrode within a plane parallel to the machining surface to which the wire electrode approaches, in an approach section where the wire electrode performs cutting machining on the machining surface of the workpiece. | 08-29-2013 |
20130228553 | MULTI-WIRE ELECTRICAL DISCHARGE MACHINING SYSTEM, MULTI-WIRE ELECTRICAL DISCHARGE MACHINING APPARATUS, POWER SUPPLY DEVICE, MULTI-WIRE ELECTRICAL DISCHARGE MACHINING METHOD, SEMICONDUCTOR SUBSTRATE, SOLAR CELL SUBSTRATE, SUBSTRATE MANUFACTURING SYSTEM, AND SUBSTRATE MANUFACTURING METHOD - Disclosed herein is a multi-wire electrical discharge machining system for slicing a workpiece into a thin leaf at intervals of a plurality of wires arranged together causes the plurality of wires arranged together to travel in the same direction and includes a power feed contact configured to collectively comes into contact with the plurality of the traveling wires, a machining power supply portion configured to supply a machining power supply to the power feed contact, and an electrical discharge portion configured to electrically discharge a machining power supply in which the plurality of the traveling wires comes into contact with the power feed contact to collectively supply power to the plurality of the traveling wires to the workpiece, in which a resistance between the machining power supply portion and the power feed contact is smaller than a resistance between the power feed contact and the electrical discharge portion. | 09-05-2013 |
20130228554 | ELASTIC ELEMENT FOR THE USE IN A STABILIZATION DEVICE FOR BONES AND VERTEBRAE AND METHOD FOR THE MANUFACTURE OF SUCH ELASTIC ELEMENT - A stabilization device for bones or vertebrae comprises a substantially cylindrical elastic element. The elastic element has a first end and a second end opposite to the first end. An elastic section extends between the first end and the second end. The elastic section includes at least first and second helical coils. The first and second helical coils are arranged coaxially so that the first helical coil extends at least in a portion between the second helical coil. The elastic element may form, for example, a portion of a rod, bone anchoring element, or plate. | 09-05-2013 |
20130240486 | WIRE ELECTRICAL DISCHARGE MACHINING DEVICE - Provided is a wire electrical discharge machining device which has a tension controller for maintaining the tension of a traveling wire electrode at a tension. The tension controller includes: an allowed tension calculation module for determining an allowed tension that is less than a wire breaking tension at which the wire electrode breaks; and a set tension generation module for generating the set tension in accordance with the allowed tension. When the set tension is greater than the allowed tension, the set tension generation module reduces the set tension. When the set tension is less than the allowed tension, the set tension generation module increases the set tension in such a way that the set tension does not exceed the allowed tension. | 09-19-2013 |
20130240487 | WIRE-CUT ELECTRICAL DISCHARGE MACHINING APPARATUS AND SEMICONDUCTOR WAFER MANUFACTURING METHOD - In wire-cut electrical discharge machining apparatuses that simultaneously perform a plurality of cutting processes by engaging a wire between main guide rollers at a plurality of times, a wire-cut electrical discharge machining apparatus is provided that suppresses vibrations at cutting wire sections, to enable the cutting processes under steady-state accuracy. In addition to the main guide rollers, vibration-damping driven guide rollers or vibration-damping guides are included which form a plurality of cutting wire sections where the vibrations are suppressed by guiding the wire into place, and the positions of the cutting wire sections are thereby defined with respect to nozzles. | 09-19-2013 |
20130248494 | WIRE ELECTRIC DISCHARGE MACHINE WITH WIRE ELECTRODE CUTTING MECHANISM - A wire electric discharge machine is provided with an automatic wire-connection pipe movable between an automatic wire connection position and a retracted position. A pickup unit configured to clamp a wire electrode to be cut is disposed below a wire cutting electrode on the outlet side of the automatic wire-connection pipe. The wire electric discharge machine is further provided with a stopper mechanism configured to regulate a movement of the automatic wire-connection pipe so that a distal end of a nozzle of the automatic wire-connection pipe is located between the wire cutting electrode and the pickup unit when the wire electrode is cut. | 09-26-2013 |
20130277335 | CONTACT DETECTION APPARATUS FOR WIRE ELECTRICAL DISCHARGE MACHNE WITH CAPABILITY TO VARY APPLIED GAP VOLTAGE - A contact detection apparatus for a wire electrical discharge machine includes a voltage application unit adapted to apply a detection voltage to detect contact between a wire electrode and a workpiece; a contact determination unit adapted to determine contact or non-contact between the wire electrode and the workpiece based on changes in the detection voltage applied by the voltage application unit; and a voltage value changing unit adapted to change a voltage value of the detection voltage applied by the voltage application unit. | 10-24-2013 |
20130299459 | AUTOMATIC WIRE CONNECTING DEVICE - An automatic wire connecting device includes a heating electrode that heats an electrode wire by applying a current to the electrode wire, a tension applying unit that applies a tension to the electrode wire to which the current is applied by the heating electrode, a tension control unit that controls the tension applied by the tension applying unit, and a power supply control unit that applies a heating current smaller than a preset annealing current to the electrode wire until a first set time elapses since the current starts to be applied and increases the current applied to the electrode wire to reach the annealing current during a second set time after the first set time elapses since the current starts to be applied. | 11-14-2013 |
20130341305 | WIRE ELECTRICAL DISCHARGE MACHINING APPARATUS, WIRE ELECTRICAL DISCHARGE MACHINING METHOD, AND WORK - A mechanism in a wire electrical discharge machining apparatus for machining a workpiece by electrical discharge between a wire and the workpiece is disclosed. The mechanism includes a processing fluid bath configured to store processing fluid used for electrical discharge machining between the workpiece and the wire, a processing fluid supply port to communicate with the processing fluid bath and supply the processing fluid into the processing fluid bath from a processing fluid supply apparatus supplying the processing fluid, and a stream control mechanism to suppress a stream of the processing fluid supplied from the processing fluid supply port into the processing fluid bath in the direction of the water surface of the processing fluid in the processing fluid bath. | 12-26-2013 |
20140014624 | WIRE ELECTRIC DISCHARGE MACHINE WITH MACHINING POWER SOURCE SWITCHABLE FOR WIRE CUTTING - The wire electric discharge machine comprises a machining power source with variable output voltage, a first power supply path through which a discharge pulse current is supplied from the power source by applying a voltage at machining gap to cause electric discharge, and a second power supply path through which a wire electrode cutting current is supplied from the power source to the wire electrode, and also comprises a switching device to switch the first and second power supply paths. Discharge pulse current is supplied through the first power supply path when machining the workpiece, whereas wire cutting current is supplied when cutting the wire electrode. | 01-16-2014 |
20140014625 | WIRE ELECTRIC DISCHARGE MACHINE AND AUTOMATIC PROGRAMMING DEVICE FOR WIRE ELECTRIC DISCHARGE MACHINE - In a wire electric discharge machine or an automatic programming device for a wire electric discharge machine, in which a core is held with a workpiece base material by attaching brass contained in a wire electrode to the machining groove during machining, an attachment/deposition region where machining chips containing brass produced during machining are attached and deposited to the workpiece is set based on a machining shape obtained from a machining program and the machining chips containing brass produced during machining are attached and deposited according to the set attachment/deposition region. | 01-16-2014 |
20140103014 | WIRE ELECTRIC DISCHARGE MACHINE AND WIRE ELECTRIC DISCHARGE MACHINING METHOD - In carrying out electric discharge machining of a graphite or carbon-composite workpiece by a wire electric discharge machine, a voltage lower than that used in machining a metal workpiece by the wire electric discharge machine is supplied to a machining gap. Further, the peak value and the pulse width of a total discharge current flowing from a power supply device for electric discharge machining to a wire electrode are adjusted within ranges of 30 to 150 amperes and 0.3 to 6.4 microseconds, respectively. | 04-17-2014 |
20140144885 | WIRE ELECTRICAL DISCHARGE MACHINING APPARATUS - In order to detect a wire breakage as soon as possible, the wire electrical discharge machining apparatus includes a speed fluctuation compensator that generates a speed fluctuation suppression command that is a speed compensation value that suppresses fluctuation of the rotational speed of the tension motor on the basis of the rotational speed of the tension motor and a breakage detecting device that detects a breakage of the wire electrode on the basis of a comparison of a preset breakage detection threshold and a speed fluctuation suppression command output from the speed fluctuation compensator. | 05-29-2014 |
20140175063 | WIRE ELECTRIC DISCHARGE MACHINE THAT AUTOMATICALLY CORRECTS MACHINING ROUTE ACCORDING TO CORNER ANGLE - A wire electric discharge machine corrects a machining route according to an angle between two moving blocks that form a corner portion. A correction distance and a return distance are computed based on a detected corner angle. The correction is implemented so that an end point of a block to be machined first is extended according to the correction distance, and a portion extending from a start point of a block to be machined subsequently to an intermediate point of this block is removed according to the return distance. A machining route is created so that the end point of the new block created by the extension is connected to the start point of the other block created by the removal, and the wire electrode is moved along the machining route relative to a workpiece. | 06-26-2014 |
20140190940 | WIRE ELECTRICAL DISCHARGE MACHINE WHICH CORRECTS MACHINING PATH IN CORNER PORTION - In a corner portion formed at an intersection of a first block to be machined first and a second block to be machined second, an end point of the first block is extended. Then, after moving from the first block to the extended end point of the first block, a wire electrode of an electrical discharge machine returns to an end point of the original block (an end point of the original first block and a start point of the original second block) therefrom along the same path as before, and machines the second block therefrom. | 07-10-2014 |
20140197138 | WIRE ELECTRIC DISCHARGE MACHINE HAVING FUNCTION OF COMPENSATING POSITION OF WIRE ELECTRODE - While machining is carried out according to a machining program by an electric discharge machine, the pressures of a machining fluid supplied from upper and lower nozzles are detected and displacement amounts of upper and lower wire guides are obtained from the detected pressures. Further, positional compensation values of the upper and lower wire guides are calculated on the basis of the obtained displacement amounts, and command values of the machining program are compensated on the basis of the calculated positional compensation values. | 07-17-2014 |
20140284311 | WIRE ELECTRIC DISCHARGE MACHINE HAVING FUNCTION FOR DISCRIMINATING STATE IN WORK TANK - The wire electric discharge machine determines whether machining is submerged machining or flushing machining. If the machining is the submerged machining, when a fluid level of working fluid is lower than a predetermined height, the wire electric discharge machine prohibits a machining power from being applied. Thus, it is possible to prohibit the machining power from applied in a state in which the working fluid is insufficient and the submerged machining cannot be appropriately performed, thereby preventing an electric shock due to contact with a wire electrode and machining parts of a workpiece and preventing the working fluid from scattering to the air, and improving safety. | 09-25-2014 |
20140291294 | WIRE ELECTRIC DISCHARGE MACHINE WITH AUTOMATIC WIRE CONNECTING FUNCTION - A wire electrode is hung from an upper die guide of a wire electric discharge machine toward a workpiece, a distance from a position where the wire electrode on the top surface of the workpiece is hung down to a top end position of a machined groove formed by the electric discharge machining is calculated based on a commanded taper angle and the distance from the top surface of the workpiece to an upper die guide fulcrum position of the upper die guide, and automatic wire connection is performed by moving an upper nozzle by the calculated distance. In this way, a wire connecting operation can be performed in the vicinity of the tapered groove. | 10-02-2014 |
20140291295 | WIRE ELECTRIC DISCHARGE MACHINE HAVING WIRE ELECTRODE TENSION CONTROL FUNCTION - In a taper machining using a wire electric discharge machine, a difference between a target tension value and an actual tension value of a wire electrode is fed back to a controller to determine input current values to a wire electrode feed motor and a wire electrode deliver motor, thereby adjusting the tension value of the wire electrode. When the taper angle of the wire electrode exceeds a given value, the control gain of the tension of the wire electrode for determining the input current value to the motor is lowered to prevent the wire electrode from oscillating. | 10-02-2014 |
20140305908 | WIRE ASPIRATION DEVICE AND WIRE RECOVERY DEVICE - A wire aspiration device includes a first member having a first curved surface with a projected portion that is in close contact with peripheral surfaces of first and second recovery rollers on one side, a second member having a second curved surface with a projected portion that is in close contact with the peripheral surfaces of the first and second recovery rollers on the other side, and a third member having a through hole formed in a central portion thereof to cause the ejected wire electrode to run in the wire-electrode recovering direction and coupling the first and second members to form two grooves between the first and second curved surfaces to be in contact with the through hole, wherein a fluid spout for spouting a fluid into the through hole in the recovering direction is formed in any of the first, second, and third members. | 10-16-2014 |
20140305909 | WIRE ELECTRIC DISCHARGE MACHINE WHICH PERFORMS TAPER CUTTING - A wire electric discharge machine for taper cutting includes a table on which a workpiece is mounted, at least two linear axes for moving the workpiece and a wire electrode relative to each other, a mount portion capable of being mounted on the table, and a control unit. The workpiece can be attached to the mount portion, and the mount portion has at least two rotary axes. The control unit synchronously moves the linear axes and the rotary axes in accordance with a machining program to perform machining while relatively changing the tilt of the workpiece with respect to the wire electrode. | 10-16-2014 |
20140319101 | WIRE ELECTRIC-DISCHARGE MACHINING DEVICE AND WIRE-ELECTRODE REMOVING DEVICE - A wire-electrode removing device in a wire electric-discharge machining device includes a wire-electrode guide unit that has a through hole into which a wire electrode in a vertical direction is inserted at the time of electric-discharge machining using the wire electrode and guides an end on a cut point side of the wire electrode outside a running path, with the cut wire electrode arranged in the through hole, by rotationally moving about a wire-electrode guide shaft in an operation of removal of the wire electrode cut by wire-electrode cutting devices; a winding shaft unit that winds and removes the wire electrode on the cut point side guided by the wire-electrode guide unit; and a collection member that collects the wound wire electrode. | 10-30-2014 |
20140332503 | WIRE ELECTRIC-DISCHARGE MACHINING DEVICE, WIRE ELECTRIC-DISCHARGE MACHINING METHOD, THIN-PLATE MANUFACTURING METHOD, AND SEMICONDUCTOR WAFER MANUFACTURING METHOD - A wire electric-discharge machining device includes a control unit that selects a cutting wire to which a pulse voltage is applied by a pulse-voltage generation unit on a basis of an angle formed between an end face of a workpiece and a plane including a plurality of cutting wires, which are not parallel to the end face, an interval between parallel cutting wires, and a relative distance between the cutting wires and the workpiece. A drive unit drives a workpiece in a direction not vertical to the plane including the cutting wires, and the workpiece is cut by electric-discharge machining by applying a pulse voltage. | 11-13-2014 |
20140374385 | METHOD OF MAKING PARTIALLY WELDED SPOTS IN WIRE-CUT ELECTRICAL DISCHARGE MACHINING - In a method of welding a cut-out part with a workpiece at a preselected area in a thickness direction of the workpiece in a wire electrical discharge machining to retain temporarily or tentatively the part on the workpiece, a wire electrode | 12-25-2014 |
20150027990 | HOLDING APPARATUS, HOLDING METHOD THEREOF, WIRE ELECTRICAL DISCHARGE MACHINING APPARATUS, AND MACHINING METHOD THEREOF - A holding apparatus, which is used in electrical discharge machining for cutting a workpiece into slices at intervals of wires arranged in parallel to each other, includes: a holding unit for holding the workpiece so as to prevent the workpiece from falling from the holding apparatus; and an energization unit for energizing the workpiece so as to pass current through the workpiece. The holding unit is disposed outside a place at which the wires and the holding unit interfere with each other. The energization unit is disposed at a place at which the cutting of the workpiece into slices by the wires ends. A portion of the energization unit, which is brought into contact with the workpiece at the place at which the cutting of the workpiece into slices ends, has a surface shape that is prevented from conforming to a machining surface of the workpiece. | 01-29-2015 |
20150053650 | WIRE DISCHARGE MACHINING APPARATUS AND MANUFACTURING METHOD FOR SEMICONDUCTOR WAFERS USING THE SAME - A wire discharge machining apparatus including a plurality of main guide rollers disposed in parallel at intervals, one wire that is wound between the guide rollers while being spaced apart from one another at a fixed pitch to form cutting wire sections between a pair of guide rollers and travels according to the rotation of the main guide rollers, and power feed terminal units that feed electric power to wires of the cutting wire sections. The wire discharge machining apparatus performs cutting of a work piece with the cutting wire sections, suspends cut-out of semiconductor wafers from the work piece in a state in which a part of the semiconductor wafers is connected to the work piece, brings the wires of the cutting wire sections close to one cut surfaces, and scans the cut surfaces in a discharge-machined state. | 02-26-2015 |
20150108093 | WIRE ELECTRIC DISCHARGE MACHINE WITH MEANS FOR DETECTING FLUID PRESSURE - In a wire electric discharge machine, one end of a tube filled with a pressure transmission medium is connected to a nozzle and a pressure sensor is attached to the other end of the tube by a joint outside a working fluid tank. The pressure sensor is used to detect the pressure of a working fluid ejected from the nozzle. | 04-23-2015 |
20150129558 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - A wire electric discharge machining apparatus that machines a workpiece by using a wire supported between a lower arm and an upper arm. The apparatus includes a surface plate that has a vacant inner area in which the wire moves and supports part of the workpiece with an outer area thereof. The apparatus further includes a bellows that extends through a side surface of a casing of a machining bath, enclosing part of the lower arm, wherein a first end of the bellows that is on a side of the machining bath is attached to the lower arm so that the bellows does not get in under the inner area, at whatever position the wire machines the workpiece. | 05-14-2015 |
20150144599 | WIRE ELECTRIC DISCHARGE MACHINE - A wire electric discharge machine configured to perform machining while swinging a wire electrode and comprising a swing frequency counting unit configured to count a swing frequency of the wire electrode, a machining stop unit configured to stop machining by the wire electrode when the swing frequency reaches a predetermined value, and a machining resuming unit configured to drive an axis drive unit to move the wire electrode by a predetermined distance relative to a workpiece after the machining is stopped by the machining stop unit and thereafter to return the wire electrode to a position where the machining is stopped and resume the machining. | 05-28-2015 |
20150290733 | WIRE ELECTRICAL DISCHARGE MACHINING APPARATUS, MACHINING CONTROL DEVICE, AND MACHINING CONTROL PROGRAM - The wire electrical discharge machining apparatus includes: a tension control motor controlling tension and feed speed of the wire extending under tension between a tension control roller and a winding roller by controlling the tension control motor; an external force estimator calculating an external force estimate applied to the tension control motor; an external force determiner determining, based on the external force estimate, whether there is a sign indicative of breaking of the wire; a machining power control device controlling a machining power source to reduce electrical discharge machining energy between the wire and a workpiece when determining that there is a sign indicative of breaking of the wire; a motor position detector detecting a rotational position of the tension control motor; and a motor control device controlling the tension control motor on the basis of the rotational position such that the feed speed stays within a predetermined range. | 10-15-2015 |
20150306690 | WIRE CUTTING ELECTRODE AND WIRE CUTTING DEVICE USING THE SAME - A wire cutting electrode which includes a carbon nanotube composite wire, a tensile strain rate of the carbon nanotube composite wire being less than or equal to 3%. The carbon nanotube composite wire includes a carbon nanotube wire and a metal layer. The carbon nanotube wire consists of a plurality of carbon nanotubes oriented around a longitudinal axis of the carbon nanotube composite wire. A twist of the carbon nanotube wire ranges from 10r/cm to 300r/cm. A diameter of the carbon nanotube wire ranges from 1 micron to 30 microns. The metal layer is coated on an outer surface of the carbon nanotube wire, and a thickness of the metal layer ranges from 1 micron to 5 microns. A wire cutting device using the wire cutting electrode is also provided. | 10-29-2015 |
20150314384 | POWER SUPPLY UNIT AND MULTI-WIRE ELECTRICAL DISCHARGE MACHINING APPARATUS - Provided is a power supply unit, which is to be used for a multi-wire electrical discharge machining apparatus arranged to slice a material to be machined by an electrical discharge generated between a wire group including a plurality of turns of a wire arranged in parallel and the material to be machined, and to which a power supply terminal to be brought into contact with the wire group at a time to supply a voltage to the wire group is mounted, the power supply unit including: a mounting portion to which the power supply terminal to be brought into contact with the wire group at a time is mounted; and an adjusting portion arranged to adjust an inclination of the mounting portion in a direction crossing a running direction of the wire group. | 11-05-2015 |
20150352647 | MACHINING PATH DRAWING APPARATUS FOR WIRE ELECTRIC DISCHARGE MACHINE - A machining path drawing apparatus for a wire electric discharge machine that draws a machining path for the wire electric discharge machine having a core fixation function includes a machining shape information calculation unit for analyzing a machining program to determine machining shape information, a core fixation function operating region detection unit for determining a region where the core fixation function operates in the machining shape information, and a machining path drawing unit for drawing the region where the core fixation function operates with a display attribute changed when a machining path is drawn based on the machining shape information. | 12-10-2015 |
20150352648 | WIRE-CUT ELECTRICAL DISCHARGE MACHINING MACHINE IN WHICH POSITION OF LIQUID LEVEL OF MACHINING FLUID IS ADJUSTED AT TIME OF AUTOMATIC WIRE THREADING - A wire-cut EDM machine in which the position of the liquid level of machining fluid is adjusted at the time of automatic wire threading includes a shape information acquisition unit for acquiring information on the shape of an object to be machined, a wire-threading position information acquisition unit for acquiring information on a wire-threading position of a wire electrode based on relative positions of upper and lower wire guides, and a liquid level position adjustment unit for acquiring the height of the object to be machined in the vicinity of the wire-threading position based on the information on the shape of the object to be machined and adjusting the position of the liquid level of the machining fluid at the time of automatic wire threading. | 12-10-2015 |
20160023291 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - A control device | 01-28-2016 |
20160039025 | WIRE ELECTRIC DISCHARGE MACHINE DETERMINING WHETHER OR NOT ELECTRICAL DISCHARGE MACHINING OF WORKPIECE CAN BE PERFORMED - A wire electric discharge machine, configured to determine whether or not electrical discharge machining of a workpiece can be performed, includes a determination unit for determining that wire electrical discharge machining of the workpiece can be performed when a wire electrode is moved toward the workpiece and a contact detection unit detects contact, and for determining that the wire electrical discharge machining of the workpiece cannot be performed when a breaking detection unit detects the breaking of the wire electrode before the contact detection unit detects the contact. | 02-11-2016 |
20160039027 | PIEZOELECTRIC WIRE EDM - An electrode wire and a process of making a wire EDM machine tool electrode for use in an electric discharge machining apparatus includes a metallic core and a piezoelectric responsive coating disposed on the core. | 02-11-2016 |
20160039029 | WIRE ELECTRIC DISCHARGE MACHINE HAVING FUNCTION OF MOVING FROM ARBITRARY RETREAT POSITION IN ELECTRIC DISCHARGE STATE AND RETURNING TO HALT POSITION - Electric discharge machining is halted during machining program operation, and a position of the machining halt point is stored. A wire electrode is retreated from the machining halt point to an arbitrary position in which a short-circuit with a workpiece is removed (retreat position), by interrupt operation in which axis movement is performed manually. Then, a return is made from the retreat position to the machining halt point while electric discharge machining is performed, machining program operation is started from the machining halt point, and electric discharge machining is restarted. | 02-11-2016 |
20160045966 | WIRE ELECTRIC DISCHARGE MACHINE CAPABLE OF STARTING MACHINING FROM SHORT-CIRCUIT STATE - Even if a machining gap between a wire electrode and workpiece is in a short-circuit state at a start of machining by a wire electric discharge machine, a high-frequency voltage in a pulse shape is applied and a small current is supplied to an extent that the wire electrode is not fused only in an initial fixed time at the start of machining. Then, the short circuit is released, though instantaneously, and a discharge occurs in that instant and the short circuit state is eliminated by discharge repulsion thereof and therefore, machining can be started. | 02-18-2016 |
20160059338 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS AND MANUFACTURING METHOD FOR THIN PLATE AND MANUFACTURING METHOD FOR SEMICONDUCTOR WAFER USING WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - To perform highly accurate cutting according to stable power feed from a machining power supply, a wire electric discharge machining apparatus includes a wire wound over main guide rollers a plurality of times to simultaneously perform a plurality of kinds of cutting. Wire laying work for a plurality of the wires on power feed elements is reduced, uniform power is fed to cutting wire sections, stable machining is intended, and according to alignment positions, for each of units, a plurality of the power feed elements are aligned to correspond to a wire parallel arrangement interval of the cutting wire sections set as power feed targets and are disposed to feed power to the cutting wire sections with an interval of at least every other cutting wire section. | 03-03-2016 |
20160059369 | HANDLING DEVICE FOR WIRE ELECTRIC DISCHARGE MACHINES - A wire electric discharge machine for machining a workpiece includes a handling device for handling core pieces produced by the machine during the machining of the workpiece and upper and lower wire guiding heads moveable with respect to each other and with respect to the workpiece. The handling device includes a gripper mounted in a fixed or movable relation to the upper wire guiding head. The gripper moves so as to face a produced core piece with its gripper base. The gripper includes a fluid inlet where fluid flow under positive pressure enters the gripper and a fluid outlet at the gripper base where the fluid flow exits the gripper. An interior of the gripper guides the fluid flow, producing a low pressure region at the gripper base as the fluid flow exits, generating lifting force to remove the produced core piece from the workpiece by movement of the gripper. | 03-03-2016 |
20160074950 | WIRE ELECTRIC DISCHARGE MACHINE - A wire electric discharge machine includes a wire electrode fed downward to a workpiece to perform electric discharge machining, a direction changing unit that changes a traveling direction of the wire electrode below the workpiece, a collection roller that collects the wire electrode, the traveling direction of which is changed, an extendable conveying pipe provided between the direction changing unit and the collection roller, the wire electrode being inserted through the inside of the conveying pipe, a supply unit that supplies the machining fluid into the conveying pipe, a supply-amount-information detecting unit that detects information concerning a supply amount of the machining fluid supplied to the conveying pipe, and a control unit that controls supply capacity for feeding the machining fluid to the conveying pipe from the supply unit on the basis of the information from the supply-amount-information detecting unit. | 03-17-2016 |
20160121415 | APPARATUS AND METHOD FOR CUTTING SEMI/NON-CONDUCTOR USING WEDM - A wire electrical discharge machining (WEDM) method is disclosed, the WEDM method comprising steps of: (a) providing one of a non-conductive and a weakly conductive object having a to-be-cut surface; (b) providing one of a wire and a cutting tool having a cutting blade edge to cut the object along the to-be-cut surface; (c) providing a conductive medium to adhere to the to-be-cut surface via the cutting blade edge; and (d) applying an electric current between the one of the wire and the cutting tool, and the to-be-cut surface adhered to the conductive medium such that the to-be-cut surface is melted. | 05-05-2016 |
20160136745 | WIRE ELECTRIC DISCHARGE MACHINE HAVING CORNER SHAPE CORRECTING FUNCTION - A wire electric discharge machine has a function of performing correction of corner shapes independently on an upper surface and a lower surface of workpiece. On the basis of the positions of upper and lower wire guides and the position and the thickness of the workpiece, the wire electric discharge machine calculates, on the upper and lower surfaces of the workpiece, a shape correction amount in a state in which there is a space between the upper nozzle and the upper surface of the workpiece and also in which there is a space between the lower nozzle and the lower surface of the workpiece, from a correction amount at the time when nozzles of the upper and lower wire guides are closely attached to the upper and lower surfaces of the workpiece. The wire electric discharge machine performs shape correction according to the calculated shape correction amount. | 05-19-2016 |
20160184911 | WIRE ELECTRIC DISCHARGE MACHINE WITH TENSION MONITORING FUNCTION - A wire electric discharge machine with tension monitoring function comprising a tension generation unit configured to generate tension in the wire electrode, a first tension measurement unit set on the wire electrode and configured to measure tension, and a tension control unit configured to feedback tension value measured by the first tension measurement unit and output tension command value to the tension generation unit such that the tension value is equal to a target value, wherein a warning signal is configured to be generated when the tension command value output by the tension control unit is not within a set range corresponding to the target value of the tension. | 06-30-2016 |
20180021870 | WIRE ELECTRICAL DISCHARGE MACHINE AND WIRE ELECTRICAL DISCHARGE MACHINING METHOD | 01-25-2018 |
20190143432 | CONTROLLER FOR WIRE ELECTRICAL DISCHARGE MACHINE AND CONTROL METHOD OF WIRE ELECTRICAL DISCHARGE MACHINE | 05-16-2019 |