| Entries |
| Document | Title | Date |
|---|
| 20080197115 | Electrical Discharge Machine - An electrical discharge machine feeds an electrode wire received within a guide tube to a process region of a machined article. The electrical discharge machine includes a cylindrical hollow driving shaft arranged in a vertical direction, which has a space for receiving the guide tube with the electrode wire along a vertical central axis. A head assembly includes a first holding member for holding the guide tube, and a second holding member for holding the electrode wire extending from a bottom opening of the guide tube. The head assembly is detachably coupled with a bottom portion of the driving shaft. Therefore, the electrode wire can be replaced by replacing the head assembly. | 08-21-2008 |
| 20090120911 | WIRE BREAK DETECTING DEVICE FOR WIRE ELECTRIC DISCHARGE MACHINE - In electric discharge machining for intermittently applying voltage pulses between a wire electrode and a workpiece with quiescent periods interposed, test voltage for checking conduction between upper and lower power feeding elements is applied during quiescent periods. When there is no conduction, it is determined that the wire electrode is broken between the upper and lower power feeding elements. | 05-14-2009 |
| 20090230091 | DEVICE DESIGNED TO CUT OFF THE SPENT WIRE ON A SPARK EROSION MACHINE - Cutting device for spark-erosion machine wires in which, after passing through a machining region, the wire-electrode is cut up into sections which are disposed of as waste products into a recovery receptacle. The device comprises electrical contacts connected to a voltage/current source. The wire is subjected to a dielectric fluid whose flow rate is sufficiently high to generate a turbulent flow regime and cause random lateral movements of the wire which sporadically brushes against the contacts. | 09-17-2009 |
| 20100301016 | ELECTRIC DISCHARGE MACHINING DEVICE USING ROTATING CIRCULAR BLADE - An electric discharge machining (EDM) device includes a circular blade, a motor coupled to the circular blade for rotating the circular blade, and an electric discharge control system operatively coupled to the circular blade and a workpiece. The electric discharge control system causes the rotating circular blade to cut the workpiece using electric discharge machining. The device allows for removal of large chunks of material using EDM, minimizing the number of cuts, time and energy required to create a part. | 12-02-2010 |
| 20110226741 | ELECTRODE MANAGEMENT DEVICE FOR ELECTRICAL DISCHARGE MACHINING MACHINE TOOLS - Device for managing the electrodes for electrical discharge machining EDM machine tools comprises at least one magazine ( | 09-22-2011 |
| 20120187092 | ELECTRIC DISCHARGE MACHINING DIE SINKING DEVICE - An electric discharge machine die sinking device includes a tank for holding a fluid, and at least one electrode in the tank having a shape for imparting to a first portion of a workpiece. A workpiece holder positions the workpiece at least partially immersed in the fluid and alternately moves the workpiece between an inoperable position and a first operable position of the first electrode at which electric discharge machining occurs on the first portion. A pulse generator creates an electric discharge between the first portion and the first electrode to remove material from the first portion in response to the workpiece being in the first operable position. Movement of the workpiece from the electrode flushes particle containing fluid away from the workpiece and the electrode. A segmented electrode includes a separate pulse generator for each segment may also be employed. | 07-26-2012 |
| 20120228268 | POWER SUPPLY DEVICE FOR ELECTRICAL DISCHARGE MACHINE AND CONTROL METHOD THEREFOR - The power supply device for electrical discharge machine is equipped with a capacitor that stores electric charge, a DC power supply V that charges the capacitor, a first switching element that generates a pulse-like discharge by applying the electric charge stored in the capacitor to an electrode gap, and a control unit that controls ON/OFF of the first switching element based on a voltage of the electrode gap. After controlling the first switching element to be ON so as to apply the electric charge stored in the capacitor to the electrode gap, the control unit changes an amount of time from a point when the voltage of the electrode gap is decreased to a predetermined value or lower to a point when the first switching element is controlled to be OFF, so as to control the magnitude of a discharge pulse generated in the electrode gap. | 09-13-2012 |
| 20120228269 | ELECTRICAL DISCHARGE MACHINING WITH THICK WIRE ELECTRODE - A process of electrical discharge machining using a wire electrode is provided. The use of a thick wire electrode means that the surface can be machined considerably more accurately. The wire electrode has a diameter of at least 2.0 mm. In a first step for machining the surface, a rough contour is produced on the component. | 09-13-2012 |
| 20120312786 | WIRE ELECTRIC DISCHARGE MACHINE FOR TAPER-MACHINING TILTED WORKPIECE - In a wire electric discharge machine, a workpiece mounting unit mounts a workpiece tilted at a preset angle to a plane based on two orthogonal axes, X- and Y-axes. An XY-coordinate system is tilted at the preset angle so that it is transformed into an X′Y′-coordinate system. A machining command value commanded by a machining program is corrected based on the X′Y′-coordinate system. Thus, the tilted workpiece is taper-machined with a wire electrode kept substantially perpendicular to the XY-plane (table surface). | 12-13-2012 |
| 20130015162 | POWER SUPPLY DEVICE FOR WIRE ELECTRIC DISCHARGE MACHINE CAPABLE OF SUPPRESSING WIRE ELECTRODE CONSUMPTIONAANM MATSUNAGA; TomoakiAACI Minamitsuru-gunAACO JPAAGP MATSUNAGA; Tomoaki Minamitsuru-gun JPAANM KAWAHARA; AkiyoshiAACI Minamitsuru-gunAACO JPAAGP KAWAHARA; Akiyoshi Minamitsuru-gun JP - A power supply device for a wire electric discharge machine is provided with a main DC power source and an auxiliary DC power source with variable voltage. While first pulses are being output, a voltage from the main DC power source is applied to a machining gap between a wire electrode and a workpiece. While second pulses are being output with the output of the first pulses stopped, inductive energy stored by an inductance in a circuit is passed through the gap, and a voltage corresponding to a peak current value provided by the main DC power source is applied to the gap by the auxiliary DC power source. When the output of the second pulses is stopped, the inductive energy is returned to the main DC power source. | 01-17-2013 |
| 20130026140 | ELECTRICAL DISCHARGE MACHINE AND ELECTRICAL DISCHARGE MACHINING METHOD - An electrical discharge machine that performs electrical discharge machining on a workpiece by supplying a machining fluid to a machining gap between a machining electrode and the workpiece, the electrical discharge machine including: an air-bubble generation unit that generates air bubbles in the machining fluid; a storage unit that stores therein the machining fluid containing the air bubbles generated by the air-bubble generation unit; and a flow-rate adjustment unit that adjusts a flow rate of the machining fluid that flows in the storage unit, wherein the flow-rate adjustment unit adjusts the flow rate according to a diameter of the air bubbles contained in the machining fluid to be supplied to a machining tank in which the workpiece is placed. | 01-31-2013 |
| 20130037522 | AUTOMATIC WIRE THREADER FOR WIRE ELECTRIC DISCHARGE MACHINING APPARATUS - Provided is an automatic wire threader for a wire electric discharge machining apparatus including a jet nozzle ( | 02-14-2013 |
| 20130056445 | PRE-SEALING UNIT FOR WIRE-CUT ELECTRIC DISCHARGE MACHINE - A sealing mechanism is disposed in a lower-arm insertion portion of a working tank of a wire-cut electric discharge machine, and a pre-sealing unit is attached to the sealing mechanism. The pre-sealing unit includes bellows unit and partition unit which surrounds the sealing mechanism from within the working tank. Further, a supply pipe formed with a plurality of openings directed to the sealing mechanism is located at the upper part of the bellows unit, and a working fluid is introduced into the pre-sealing unit through the openings of the supply pipe. | 03-07-2013 |
| 20130098877 | AUTOMATIC WIRE TAIL ADJUSTMENT SYSTEM FOR WIRE BONDERS - A capillary is utilized to form the wedge wire bond comprised in a wire interconnection. A wire holding device is located above a wire clamp and the capillary to secure the wire while the wire clamp is open and not clamping onto the wire. The wire clamp and the capillary may be lifted relative to the wire in a direction away from the wedge wire bond and towards the wire holding device so as to pay out a length of wire from the capillary. At a predetermined height of the capillary, the wire clamp is closed to clamp onto the wire, and thereafter, the capillary and wire clamp may be moved further away from the wedge wire bond to cause the wire to break away from the wedge wire bond and to form the wire tail with a desired length extending from the capillary. | 04-25-2013 |
| 20130112658 | MACHINING CONDITION ADJUSTING DEVICE FOR ELECTRIC DISCHARGE MACHINE - Machining state information is acquired for each predetermined period by performing test machining by means of an electric discharge machine, and the acquired machining state information is compared with reference machining state information, whereby whether a machining state is satisfactory or not is determined. If the machining state is determined to be unsatisfactory, set items of a machining condition are adjusted. Thereafter, test machining is actually performed again, and the machining condition is adjusted by changing the set items if the machining state is determined again to be unsatisfactory. Thus, the acquisition of the machining state information, determination of the machining state, and adjustment of the machining condition are repeated so that satisfactory machining is finally determined. | 05-09-2013 |
| 20130161292 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS HAVING FUNCTION OF AUTOMATICALLY SELECTING AUTOMATIC WIRE CONNECTING PARAMETER - By utilizing a function of automatically selecting an automatic wire-connection parameter of a wire electric discharge machining apparatus, a default cutting condition is read, a cutting process is executed, and a wire-connection process is executed. As a result, when the wire connection is successful, the process in an automatic wire connection mode is ended. On the other hand, when the wire connection is unsuccessful, it is determined whether or not a parameter set selected by executing a cutting condition automatic selection process is adopted as a new default cutting condition. When the selected parameter set is adopted as the new default cutting condition, the selected parameter set is stored as the new default cutting condition, and the automatic wire connection mode is ended. | 06-27-2013 |
| 20130161293 | WIRE ELECTRIC DISCHARGE MACHINE DISSOLVING INTERT GAS IN MACHINING FLUID AND WIRE ELECTRIC DISCHARGE MACHINING METHOD USING THE SAME - A wire electric discharge machine machines a workpiece immersed in an electrically conductive water-based machining fluid stored in a machining vessel. An inert gas dissolver is provided in the wire electric discharge machine to pressurize the machining fluid, dissolve an inert gas into the pressurized machining fluid, and depressurize the machining fluid, such that wire discharge machining is carried out in the machining fluid containing the inert gas dissolved therein. | 06-27-2013 |
| 20130168361 | REACTIVE-SPECIES SUPPLY DEVICE AND SURFACE TREATMENT APPARATUS - A reactive-species supply device is configured to supply a treatment gas to an electric discharge space that is formed by at least one pair of electrodes, for thereby supplying at least a reactive species formed in a plasma, to an object through a reactive-species output port. The reactive-species supply device includes (a) a reactive-species outlet passage disposed between the electric discharge space and the reactive-species output port and (b) an earth ground member disposed in a portion of the reactive-species outlet passage. The portion of the reactive-species outlet passage is distant, by a given distance, from the reactive-species output port. Also disclosed is a surface treatment apparatus that includes the reactive-species supply device. | 07-04-2013 |
| 20130193111 | AUTOMATIC WIRE-THREADING DEVICE - The automatic wire-threading device includes a wire feed motor that drives a wire feed roller in a feeding direction, a wire-feed-motor control unit that outputs a feeding-direction rotation-speed reference to the wire feed motor at a time of a threading operation of a wire electrode and that reduces torque in a feeding direction when a detected rotation speed of the wire feed roller is larger than the feeding-direction rotation-speed reference, a wire collecting motor that drives a wire collecting roller in a collecting direction, and a wire-collecting-motor control unit that outputs a predetermined wire-collecting-roller speed reference to the wire collecting motor to collect a wire. The wire-feed-motor control unit limits torque so that an absolute value of motor torque in a winding-back direction of a wire feed roller is smaller than an absolute value of motor torque in a feeding direction. | 08-01-2013 |
| 20130213941 | ELECTRIC DISCHARGE MACHINE AND ELECTRIC DISCHARGE MACHINING METHOD - An electric discharge machine performs a hole machining on a workpiece by applying a voltage between an electrode and the workpiece to generate an electric discharge therebetween and moving the electrode to a position of a command depth. The electric discharge machine comprises: a storage unit; a current-coordinate detection unit; an electric-discharge-voltage detection unit a penetration detection unit; and a calculation unit. The storage unit stores therein a penetration determination voltage, a penetration determining duration, and a first projecting amount. The current-coordinate detection unit detects a current position of the electrode. The electric-discharge-voltage detection unit detects a minimum voltage of the electric discharge for each predetermined period. The penetration detection unit determines the electrode has penetrated through the workpiece. The calculation unit calculates, a position obtained by adding the first projecting amount to the current position of the electrode detected by the current-coordinate detection unit and updates the command depth. | 08-22-2013 |
| 20130299457 | ELECTRICAL DISCHARGE MACHINING ELECTRODE - An example electrical discharge machining electrode assembly includes an electrode base and an electrode coating containing diamond that is electroplated to the electrode base. | 11-14-2013 |
| 20130299458 | ELECTRICAL DISCHARGE MACHINING SYSTEM AND METHOD FOR ELECTIRCAL DISCHARGE MACHINING USING THE SAME - An electrical discharge machining (EDM) system and a method for electrical discharge machining using the above-mentioned machining system, the EDM system includes a bed, and an EDM module disposed on the bed. The EDM module includes an electrode, a providing part, an electrode guide and a retrieving part. The electrode machines a die. The providing part provides the electrode to be used for machining the die. The electrode guide is disposed adjacent to the die and guides a transfer of the electrode. The retrieving part retrieves the electrode used for machining the die. | 11-14-2013 |
| 20130327744 | WORK TANK OF ELECTRIC DISCHARGE MACHINING DEVICE - A work tank of an electric discharge machining device can manually move up and down, open and close, and lock and unlock a door without using any mechanical components. The work tank includes: a box-shaped tank body having an open front surface and an openable and closable door; a pair of handle bars that are placed right and left of the tank body; a handle that is installed between front end parts of the pair of handle bars; a pair of door stays that are placed at right and left of the tank body; a guide rail that moves up and down the door stay hung from the handle bar; a load receiving unit that supports a load of the door stay; and a stopper that restricts downward rotation and a frontward movement of the handle bar at a predetermined rotation position. | 12-12-2013 |
| 20140048515 | TEMPLATE FOR FORMING COOLING PASSAGES IN A TURBINE ENGINE COMPONENT - A reusable template for simultaneously forming a plurality of cooling passages in a component for use in a turbine engine includes a first surface defining an electrode entry surface, a second surface opposed from the first surface and defining a component mating surface, and a plurality of electrode passages pre-formed in the template and extending from the first surface to the second surface. The second surface of the template has a shape that corresponds to an outer surface of the component such that the template is capable of being snugly positioned against the outer surface of the component. During an electro-discharge machining operation, a plurality of electrodes are simultaneously inserted through the pre-formed electrode passages in the template and into the component while supplying an electric current to the electrodes to remove material from the component so as to form the cooling passages therein. | 02-20-2014 |
| 20140061164 | VARIABLE LENGTH FLUSH NOZZLES FOR WIRE ELECTRICAL DISCHARGE MACHINES - Variable length flush nozzles for wire electric discharge machining (wire EDM) are provided. The variable length flush nozzle comprises an elongated body having an internal channel and a nozzle head having a pair of opposed slots formed therein. The nozzle head is coupled to the elongated body by a retention element dimensioned and configured for operative engagement with the pair of opposed slots such that the nozzle head is slidable relative to the elongated body between a fully extended position in which the variable length flush nozzle is at a maximum length and a fully retracted position in which the variable length flush nozzle is at a minimum length. | 03-06-2014 |
| 20140076855 | DATA COLLECTION SYSTEM FOR ELECTRIC DISCHARGE MACHINES - In a data collection system for electric discharge machines, multiple electric discharge machines are connected with a computer over a data transmission path. Information on machining conditions of an electric discharge machine is stored in a storage unit of the electric discharge machine, and information sent from the electric discharge machine after completion of machining is collected by the computer. By minimizing monitoring information that is temporarily stored in the storage unit, various kinds of monitoring information can be stored without being affected by a network environment. | 03-20-2014 |
| 20140076856 | WIRE ELECTRIC DISCHARGE MACHINE HAVING SHAFT FEED CONTROL SYSTEM DISCRIMINATING FUNCTION - When machining of a workpiece is started in a wire electric discharge machine, before a voltage is applied between a wire electrode and the workpiece (a machining gap), practicable shaft feed control systems are discriminated on the basis of machining conditions set in advance. According to the discrimination, running into an inability state of continuity of machining and an accuracy failure after machining are prevented beforehand. | 03-20-2014 |
| 20140116989 | WIRE ELECTRIC DISCHARGE MACHINING APPARATUS AND COOLING CONTROL DEVICE - The present invention includes a post-cooling temperature sensor that measures a temperature of the machining fluid immediately after being cooled by a cooling device as a post-cooling fluid temperature, and an intra-tank temperature sensor that measures a temperature of the machining fluid in a work tank as an intra-tank fluid temperature, for a cooling control device that controls a fluid temperature of the machining fluid in a wire electric discharge machining apparatus, and the cooling control device has a first temperature-feedback control unit that feeds back the post-cooling fluid temperature into a cooling instruction value as an instruction value for the cooling device, and a second temperature-feedback control unit adjusts the cooling instruction value by feeding back the intra-tank fluid temperature to cause the intra-tank fluid temperature to follow a target temperature. | 05-01-2014 |
| 20140144884 | SMALL-HOLE ELECTRICAL DISCHARGE MACHINING DEVICE - It is an object to provide a small-hole electrical discharge machining device to discharge the machining debris efficiently and to drill a small hole by electrical discharge machining at a high speed. | 05-29-2014 |
| 20140197137 | WORKPIECE MOUNTING TABLE FOR ELECTRIC DISCHARGE MACHINE - A workpiece mounting table ( | 07-17-2014 |
| 20140209570 | MACHINE TOOL - A machine tool includes a bed, an electric-discharge machining unit that is mounted on the bed and constitutes a machine main body, a frame that has a mounting surface and is fixed to a side surface of the bed, machining fluid tanks that are used when the electric-discharge machining unit is operated to performs a machining work, and are set to the first state where these tanks are above the frame and separated from the mounting surface so as to be self-supported, or to the second state where these tanks are mounted on the mounting surface, and a transport fixing tool that is removed when the machining fluid tanks are set to the first state, and is attached when the machine main body and the machining fluid tanks are set to the second state. | 07-31-2014 |
| 20140231392 | HOLE EXPANDING DEVICE FOR LENS HOLDER - A hole expanding device includes an electric heating device, a moving device, an rotating device, and a carrying device. The electric heating device includes a transition portion and a hole expanding rod fixed onto the transition portion. The electric heating device heats the hole expanding rod to a predetermined temperature. The rotating device is fixed onto the moving device. The moving device drives the rotating device to move along a direction parallel to the hole expanding rod. The carrying device is fixed onto the rotating device and includes a receiving groove for receiving and fixing a workpiece. The rotating device rotates the carrying device to make two opposite surfaces of the workpiece face the hole expanding rod. | 08-21-2014 |
| 20150290734 | ELECTRIC DISCHARGE MACHINE WITH ROTARY TABLE - A rotary table device of an electric discharge machine is provided with a face plate on which a workpiece is placed, a power unit that generates a driving force for rotating the face plate, and a speed reducer connected to the power unit and configured to reduce the rotational speed of the power unit. The respective centers of rotation of the power unit and the speed reducer are disposed on one and the same axis, and a rotation detector for detecting a rotational position of the face plate is disposed in a space defined by an outer peripheral portion of the speed reducer and an inner wall of a housing of the rotary table device. | 10-15-2015 |
| 20150367437 | WIRE ELECTRIC DISCHARGE MACHINE PROVIDED WITH DISCONNECTION REPAIRING UNIT - A wire electric discharge machine provided with a disconnection repairing unit includes a core-fixing-end-position storing unit for storing a core fixing end position of a depositing and accumulating operation machined most lately among positions at which the depositing and accumulating operation for machining wastes by a core fixing function ends in a machining shape currently being machined and a disconnection repairing unit for executing automatic connection between a disconnection position and the core fixing end position. | 12-24-2015 |
| 20160039028 | ELECTRICAL DISCHARGE MACHINING APPARATUS - An electrical discharge machining apparatus includes: a surface plate that a workpiece is placed on; a machining tank that surrounds the surface plate, retains a machining liquid, and has at least a part that serves as a substantially box-shaped vertically moveable ascent/descent machining tank, the ascent/descent machining tank having an outlet in an ascent/descent inner wall of the ascent/descent machining tank, the outlet allowing the machining liquid to overflow to the ascent/descent machining tank; an ascent/descent device that raises and lowers the ascent/descent machining tank; a sub-tank that receives the machining liquid that leaks out from the machining tank; a slit that is provided in an end wall of the sub-tank for allowing a connection member to pass through, the connection member connecting the ascent/descent machining tank and the ascent/descent device; and a seal that is arranged in a gap between the ascent/descent machining tank and an inner wall of the sub-tank and prevents the machining liquid in the machining tank from leaking out into the sub-tank, the electrical discharge machining apparatus creating an electrical discharge in a small gap between the workpiece and an electrode to machine the workpiece, the workpiece being immersed in the machining liquid retained in the machining tank, wherein a slit-like receiving opening is provided at a bottom of the ascent/descent machining tank on the ascent/descent inner wall side, the slit-like receiving opening receiving the machining liquid that leaks through the seal and drips along the ascent/descent inner wall and recovering the machining liquid in the ascent/descent machining tank. | 02-11-2016 |
| 20160089739 | ROTARY TABLE APPARATUS AND ELECTRIC DISCHARGE MACHINE USING THE ROTARY TABLE APPARATUS - A rotary table apparatus includes a rotary table body, a table rotor supported on the rotary table body and configured to be rotatable, a driving unit for driving the table rotor, a seal mechanism including a sealer disposed between the rotary table body and the table rotor, and a first supply unit configured to supply clean fluid for use in machining to the seal mechanism. | 03-31-2016 |
| 20160167147 | ELECTRIC DISCHARGE MACHINE | 06-16-2016 |
