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108 results about "Electric discharge" patented technology

An electric discharge is the release and transmission of electricity in an applied electric field through a medium such as a gas.

Intelligent dispatching and production regulation and control system of electric discharge machine

The invention relates to the technical field of industrial intelligent control, in particular to an electric discharge machine intelligent scheduling and production regulation and control system which comprises a staggered analysis module, a station mapping module, a task distribution module, a trend prediction module and an instruction regulation and control module. According to the method, the processing task parameters and the station bearing parameters of different dimensions are standardized and uniformly mapped, and then the spatial distance is calculated to accurately quantify the matching degree between the tasks and the stations, so that the limitation of static distribution can be eliminated, and redundant production resources are identified and eliminated by analyzing the change of the matching degree; according to the energy demand and time urgency dynamic remapping of a task, simplification and efficiency improvement of production configuration are achieved, meanwhile, the future abrasion risk can be foreseen by collecting key component contour data in real time and converting the key component contour data into a quantitative integrity index, establishing a state dynamic change track and conducting trend extrapolation, and the method has the advantages of being high in practicability and the like. And finally, carrying out comprehensive decision making according to the prediction result and the real-time load margin.
Owner:XIAO PULSE (NANTONG) INTELLIGENT EQUIPMENT CO LTD

Intelligent diagnosis method for machining process of electric spark machine

The invention relates to the technical field of intelligent diagnosis, in particular to an electric discharge machine machining process intelligent diagnosis method which comprises the following steps of analyzing the electric discharge machine discharge voltage change rate, dynamically adjusting a sampling window and a channel, extracting signal channel switching amplitude characteristics, correcting periodic weight parameters and outputting a dynamic weight adjustment parameter set. And calculating a weighted sum, screening a deviation period, marking an energy anomaly paragraph, and outputting a wear trend identifier. According to the method, dynamic changes of discharge signals are monitored in real time, sampling channels are optimized according to the signal fluctuation trend, weight distribution and linkage analysis among parameters in a period are adopted, energy fluctuation and abrasion information are collected in a sequence form, multi-dimensional data continuously refer to each other in the machining process, trend positioning can be achieved for abnormal phenomena, and the machining precision is improved. The abnormal tracking mechanism of the whole process is perfected, the identification granularity and trend tracing capability of state evolution are improved, and the process monitoring and risk prompting under the complex processing condition are enhanced.
Owner:XIAO PULSE (NANTONG) INTELLIGENT EQUIPMENT CO LTD

Multi-machine cooperative machining control method and system for electric discharge machines

The invention discloses an electric discharge machine multi-machine cooperative machining control method and system, and relates to the technical field of electric discharge machines. A mapping table is established, an alignment state is generated, a medium pollution threshold value is set and monitored, candidate scheduling is generated, simulation is performed by using a discharge parameter template, and gap updating monitoring, electrode abrasion compensation writing, verification before transfer and remeasurement are combined to generate a receipt. Through unified work order analysis and operation drawing modeling, centralized management of the electrode, the machine tool capacity and the quality threshold value is achieved, it is ensured that the machining precision of different machine tools is consistent, the overall efficiency is improved, the stability of continuous machining is kept, through transfer verification and quality closed loop, it is ensured that all procedures are traceable, and the working efficiency is improved. And continuous optimization is realized through abnormal classification and experience library updating, so that rework is reduced on the whole, and the stability, precision and production takt of multi-machine collaborative processing are improved.
Owner:XIAO PULSE (NANTONG) INTELLIGENT EQUIPMENT CO LTD

Online detection method and detection device for discharge cutting

The invention relates to the field of discharge cutting online detection, in particular to an online detection method and device for discharge cutting. The device comprises a discharge cutting machine tool and an experiment detection platform, the method comprises the steps that a machined workpiece is machined on a discharge cutting machine tool in a fixed-distance segmented machining mode; after the machining section is completed, the clamping mechanism for clamping the machined workpiece is integrally moved to the experiment detection platform; detecting and recording the current processing section on the processing workpiece through the experimental detection platform; with the current machining section as a starting point, fixed-distance machining of the next section is conducted again; detecting and recording the processing workpiece of the current fixed-distance processing section; and the process is finished. Through a fixed-distance multi-section cutting machining mode, the workpiece can be effectively detected in the machining process, the workpiece is freely switched between machining equipment and detection along with the clamp, the detection efficiency is improved, and the technical defect that workpiece surface defect information cannot be obtained due to blind machining is also avoided.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Electric discharge extrusion plastic coating equipment

This utility model relates to the field of electric wire and cable production technology, and in particular to an extrusion coating device for electric wire and cable. This device allows the electric wire and cable to be coated with different materials sequentially during its movement, thereby forming a multi-layer composite structure in a single processing cycle, effectively improving production efficiency and the bonding strength of the coating layers. The extrusion mold is equipped with a thickness control component, including horizontally movable left and right adjustable die lips, which can precisely adjust the size of the discharge hole, ensuring the uniformity and adjustability of the coating thickness to meet the processing needs of electric wire and cable of different specifications. Furthermore, the design of the conical injection channel and stepped transition surface optimizes the flow distribution of the molten material, reducing turbulence and bubble generation, and improving the coating quality. The combined use of the guide sleeve and positioning component accurately guides the electric wire and cable into the extrusion cavity, preventing deviation and ensuring the symmetry and consistency of the coating layers. The overall structure is compact, easy to operate, suitable for continuous production, and has high practicality and economy.
Owner:CHONGQING HESHENG NEW ENERGY TECH CO LTD

Axle head structure A of electric spark machine tool

The utility model discloses an electric spark machine tool A shaft head structure which comprises a support and a chuck rotationally installed on the support, three clamping jaws are movably installed at the head end of the chuck, a fluted disc is rotationally installed in the chuck, spiral teeth meshed with the clamping jaws are arranged on the head end face of the fluted disc, and the clamping jaws are connected with the fluted disc. The outer edge of the tail end of the fluted disc is connected with three gears in a meshed mode, the gears are rotationally connected with a chuck through adjusting shafts, a connecting cylinder is arranged at the tail end of the chuck, a worm wheel disc is fixed outside the connecting cylinder, the lower portion of the worm wheel disc is connected with a worm in a meshed mode, and a main motor for driving the worm to rotate is installed outside the support. The hollow chuck is arranged, the long-rod-shaped workpiece can penetrate through the middle of the interior of the chuck when clamped, the chuck can not only clamp one end of the long-rod-shaped workpiece any more, and the long-rod-shaped workpiece can be clamped and fixed at any position of the long-rod-shaped workpiece, so that the length of the long-rod-shaped workpiece extending out of the head end of the chuck is reduced; and therefore, the problem that the long-rod-shaped workpiece vibrates and shakes during rotation can be solved.
Owner:JIANGSU DERICA CNC MASCH TOOL CO LTD

Electric discharge machining method

PCT designated stageWO2026140113A1Electric dischargeMolding machine
Provided is an electrical discharge machining method for machining a mold (30) used for molding an integrally molded article of a metal member and a resin molded body that contains a resin, the electrical discharge machining method comprising: a first step for selecting, as an electrical discharge machining electrode of a die-sinking electrical discharge machine, at least a portion of a metal member (10) having the same material and the same shape as the aforementioned metal member; and a second step for implementing die-sinking electrical discharge machining on a prescribed region of the mold (30) so as to follow the shape of the electrical discharge machining electrode using the electrical discharge machine. This makes it possible to reduce processing time and manufacturing cost in a step until the shape of the mold (30) is formed, and makes it possible to achieve excellent shape matching between the metal member (10A) and the mold (30) during molding of an integrally molded article (90).
Owner:SUMIDA CORP

Electric spark machining coordinate acquisition and execution method and system

An electric spark machining coordinate collecting and executing method comprises the steps that S1, in a calculation environment with a three-dimensional geometric processing function, a first coordinate position where interference-free entering and a second coordinate position where machining is terminated are obtained; s2, mapping from the reference zero point to a physical processing zero point on an electric spark machine tool; s3, after the physical electrode is automatically replaced on the machine tool, the geometric deviation of the physical electrode is measured, and the deviation serves as a tool offset parameter to be written into a numerical control system; and S4, an electrode is controlled to execute electric discharge machining from the first coordinate position to the second coordinate position. According to the method, coordinates are obtained through simulation, the risk of motion interference of the electrode in a complex inner cavity is eliminated in advance, and the problem that visual tool setting cannot be achieved during blind hole machining is solved. A large amount of coordinate acquisition work is transferred to the computer end, the machine tool end only needs to execute automatic calibration and machining, the shutdown waiting time is remarkably shortened, and continuous automatic production is achieved.
Owner:AVIC SHAANXI DONGFANG AVIATION INSTR

Sensor device for monitoring the dielectric strength of a dielectric fluid, in particular a fluid for the thermal conditioning of a battery

A sensor device for monitoring dielectric strength of a dielectric fluid has a sensor body which supports a sensitive part (SGi), designed for contact with the dielectric fluid. The sensitive part (SGi) comprises at least one pair of electrodes (E1, E2) having respective surface portions arranged at a predefined micrometric or sub-micrometric distance, to define therebetween at least one detection gap between which part of the dielectric fluid is suitable to seep in. The sensor device has a circuit arrangement comprising: —means for generating an electric field between the two electrodes of the at least one pair of electrodes (E1, E2) starting from a known supply voltage, and—means (V) for measuring a voltage representative of possible occurrence of an electric discharge between the two electrodes of the at least one pair of electrodes (E1, E2) through the dielectric fluid (5) present in the at least one detection gap (G), following generation of the electric field.
Owner:ELTEK SPA

Workpiece machining method

PCT designated stageWO2026141333A1Electric dischargeElectrical discharge machining
The present invention provides a workpiece machining method for machining a workpiece by interposing electric discharge machining oil between a wire and the workpiece to perform electric discharge, wherein the kinematic viscosity of the electric discharge machining oil at 40°C is 0.70-5.0 mm2 / s, the diameter of the wire is 30-250 μm, the linear velocity of the wire during the machining is 11 m / minute or more, and the tension of the wire during the machining is 1-24 N.
Owner:IDEMITSU KOSAN CO LTD

Water treatment apparatus and method for treatment of water

A ballast water treatment apparatus including a ballast water transport line configured to transport a ballast water main stream, a plasma generation device configured to generate an activated gas from a feed gas; and a mixing device. The plasma generation device includes a feed gas inlet for a feed gas, a first electrode and a second electrode, for activating the feed gas by an electric discharge between the first electrode and the second electrode thereby generating the activated gas, a cooling fluid passage for cooling the plasma generation device, the cooling fluid passage having a cooling fluid inlet and a cooling fluid outlet, the cooling fluid passage being fed with a cooling fluid, and a combining section being configured to combine the activated gas with the cooling fluid from the cooling fluid outlet to generate an activated fluid product. The mixing device is configured to mix the activated fluid product and the ballast water main stream.
Owner:ABB (SCHWEIZ) AG

Fusion splicing device and fusion splicing method

PCT designated stageWO2026053288A1Coupling light guidesElectric dischargeEngineering
A fusion splicing device according to one embodiment fusion-splices a pair of optical fibers to each other by electric discharge. The fusion splicing device comprises: a discharge electrode for generating a discharge; a microscope for observing an optical fiber; an end face state analysis unit for analyzing the state of an end face of the optical fiber from an image of the optical fiber acquired by the microscope; an end face state determination unit for determining whether the state of the end face is a predetermined specific state; and a shaping discharge unit which, when the end face state determination unit determines that the state of the end face is the specific state, causes the discharge electrode to apply a shaping discharge to the end face to shape the end face.
Owner:SUMITOMO ELECTRIC OPTIFRONTIER CO LTD

Device and method for preventing secondary discharge of side wall in electric spark deep hole machining

The invention discloses a device and method for preventing secondary discharge of a side wall in electric spark deep hole machining, and relates to the technical field of electric spark machining.The device comprises an electric spark discharge machining structure and a resistance increasing particle release system.The electric spark discharge machining structure comprises an inner spraying type tool electrode, a hollow connecting section and a chuck; the resistance-increasing particle releasing system comprises a connecting seat, a switching system, an oil feeding valve and a resistance-increasing particle adding structure; the spark oil circulating system is used for realizing circulation of spark oil in the working box; the working box is internally provided with a back pressure system, the back pressure system comprises a back pressure plate, the back pressure plate is provided with an electrode via hole, and the two sides of the back pressure plate are provided with pre-tightening bolts. Tiny plastic particles are guided to be enriched in a processed hole wall area through the back pressure system, so that a high-resistance barrier is formed; discharge energy is concentrated at the bottom end of the electrode for normal corrosion removal, the machined precise side wall is prevented from being corroded again, and therefore the deep hole with the steep side wall and the extremely-small taper is machined.
Owner:NANTONG UNIV

Electrode device for electric discharge machining and electric discharge machining device

The present application relates to an electrode device for electric discharge machining and an electric discharge machining device. The electrode device for electric discharge machining comprises a planar substrate, a first electrode plate attached to one of two opposite sides of the planar substrate, the first plate shape having at least one edge, a first electrode provided on a radially outer side of the at least one edge facing the first electrode plate, the first electrode having a first electrode shape matching a shape of a first machining feature of a workpiece to be electric discharge machined, and a second electrode plate attached to the other of the two opposite sides of the planar substrate, the second plate shape having at least one edge, a second electrode provided on a radially outer side of the at least one edge facing the second electrode plate, the second electrode having a second electrode shape matching a shape of a second machining feature of the workpiece. The technical solution improves the electrode structure and allows simultaneous machining of multiple workpieces.
Owner:SIEMENS GAS TURBINE COMPONENTS (JIANGSU) CO LTD

Electric spark discharge machining abnormal discharge current detection method and device

The invention relates to an abnormal discharge current detection method and device for electric spark discharge machining, and is applied to the technical field of discharge machining. A direct current-direct current power supply module is adopted as a current detection core element, has a stable voltage output characteristic and is sensitive to current fluctuation response, and a traditional Hall sensor is replaced; the problem of high-precision detection of small current in a strong electromagnetic interference environment is successfully solved; on the basis of current rising edge characteristic differences of abnormal discharge and normal discharge, two key time points are selected for voltage comparison, abnormal states such as excessive arc, arc, short circuit and micro open circuit can be accurately distinguished, and missed judgment and misjudgment are avoided; a reference value lookup table corresponding to different peak currents is established through experimental calibration to adapt to various medium and finish machining parameter scenes; and the detection branch adopts the design of an isolation diode and a current-limiting resistor, and is matched with pulse-type intermittent measurement of a controlled switch tube, so that shunting interference on a main discharge loop is avoided, and the stability of the processing process is ensured.
Owner:ZHUHAI HERUI NEW TECH CO LTD

Electrode wire for wire electrical discharge machining and quality control method for electrode wire for wire electrical discharge machining

To provide a long electrode wire for wire electric discharge machining having high quality over the whole length, and a quality control method of the electrode wire for wire electric discharge machining for obtaining the electrode wire for wire electric discharge machining.SOLUTION: The wire 2 for wire electric discharge machining has a length of 200km or more, a standard deviation of diameters in the longitudinal direction of 0.29 μm or less over the entire length, and a roundness of 1.0 μm or less.SELECTED DRAWING: Figure 3
Owner:PROTERIAL LTD

Electrode for electric discharge machining of micro-holes with large depth-diameter ratio and preparation method thereof

The application discloses an electrode for electric spark machining of a micro-hole with a large depth-diameter ratio and a preparation method thereof, and belongs to the technical field of tool electrode preparation. The electrode comprises a tungsten wire rod, and the diameter of the tungsten wire rod is 0.1-0.4 mm. The tungsten wire rod is characterized in that a uniform and stable zirconium oxide insulation layer is arranged on the peripheral wall of the tungsten wire rod. The electrode selects the stable zirconium oxide layer as the insulation layer, which can enhance the insulation property of the peripheral wall of the electrode. On one hand, the electrode can reduce the discharge removal between the peripheral wall of the electrode and the side wall of the hole in the electric spark machining process, thereby improving the forming precision of the micro-hole. On the other hand, the electrode can reduce the skin effect of the current in the electrode and increase the current density of the center of the end surface of the electrode. Meanwhile, the end surface of the insulation layer has the conductivity in the electric spark discharge, electric spark discharge is generated to remove the material, and the electric spark machining efficiency is improved.
Owner:SHANDONG UNIV OF TECH

Method for controlled thermonuclear fusion

PendingUS20260155264A1Nuclear energy generationLow temperature fusion reactorThermonuclear reactionCapacitance
Systems and methods for controlled thermonuclear fusion are provided. An example method includes providing a reactor, disposing an anode and a cathode within the reactor, where the anode and the cathode form an interelectrode space, providing, by a capacitor, a positive charge to the anode and a negative charge to the cathode to obtain a predetermined potential difference between the anode and the cathode, charging, by a high-voltage power source, the capacitor to a predetermined capacitance, and introducing a predetermined amount of a liquid including a light element and an electrolyte into the interelectrode space to cause, by the predetermined potential difference, an electric discharge through the liquid, thereby inducing a thermonuclear reaction involving the light element.
Owner:AGANYAN FUSION

High-radiation underwater non-contact discharge machining method and device

The invention belongs to the technical field of non-traditional machining, and discloses a high-radiation underwater non-contact electric discharge machining method and device.According to the method, in a high-radiation underwater environment, a machined workpiece is arranged, a machining electrode system is configured, an electric discharge channel is established, and the machined workpiece is subjected to corrosion removal machining; the method comprises the following steps: collecting a physical signal in an etching processing process, generating middleware data, introducing an aqueous medium suspension containing nanoparticles, dynamically regulating and controlling a gap of a discharge channel to maintain constant, and transmitting the middleware data to a remote monitoring platform through a high-radiation shielding communication link, the remote monitoring platform performs quality evaluation on the stability of the discharge channel based on the middleware data and generates a correction instruction, and the device comprises a processing electrode system, a pulse power supply system, an integrated sensing system, a nano suspension system, a feedback controller and the remote monitoring platform. Real-time monitoring and data support are provided for the machining process, and the machining quality and efficiency are improved.
Owner:CNNC NUCLEAR POWER OPERATION MANAGEMENT CO LTD

Electron generation apparatus

An electron generation apparatus according to an embodiment of the present invention includes a support structure opened at one side thereof, having an empty space therein, and having a partition wall having a predetermined height and formed at a center of the other side, an electric discharge plate provided at the other side of the support structure, an electric discharge fin module including a support plate coupled to one side of the support structure, a plurality of electric discharge fins coupled to the support plate and having protruding members protruding toward the electric discharge plate, and connection protrusions provided on the support plate at positions to which the plurality of electric discharge fins is coupled, and a circuit module disposed at one side of the electric discharge fin module and configured to apply high-voltage, high-frequency pulse power to the plurality of electric discharge fins.
Owner:GROON

Smart autonomous tower system for insect extermination and monitoring

PendingUS20260130354A1Electric shock equipmentsBatteries circuit arrangementsElectric dischargeElectrical battery
The present invention relates to a system of autonomous towers for exterminating and monitoring insects that comprises a main tower and at least one slave tower, wherein the main tower comprises: a self-sustaining power supply system composed of a solar panel; a solar charge controller, and a storage battery, configured to provide continuous power, independently of an external source of electricity; a centralized control device through a microcomputer (Raspberry Pi) that manages the operation of the system and collects data from the slave towers through a LoRa communication network; a camera coupled to capture images of the eliminated insects, connected to a 4G module for transmitting the images to a remote server, where an artificial intelligence algorithm processes and identifies the species and quantity of insects; a high-voltage grid composed of a Positive Voltage Network (+) and a Negative Voltage Network (−) configured to release an electric discharge upon contact with insects, eliminating them instantly, wherein each slave tower comprises: a power supply system composed of a solar panel, solar controller, and battery, ensuring independent operation from an external source of electricity; a Lora communication module configured to connect to the main tower and transmit monitoring data, in addition to receiving commands, allowing for expansion of the coverage area and auxiliary action in the extermination of insects
Owner:TECSOIL AUTOMACAO E SYST SA

Electrical discharge machining apparatus and electrical discharge machining method

PendingCN122003306ASuppresses degradation of processing qualityBiological modelsElectric circuitsElectric dischargeMechanical engineering
An electrical discharge machining device (1A) is provided with: a power supply device (20) that supplies power to a machining gap between a tool electrode (4) and a workpiece (3); a current detection unit (9) that detects an inter-electrode current value, which is the current value of the current flowing from the power supply device to the machining inter-electrode; a voltage command detection unit (12) that detects an applied voltage value, which is a command value for the voltage value of the voltage applied between the machining electrodes; and a calculation device (10A) that acquires the inter-electrode current value and the applied voltage value, and estimates the electrical characteristics from the inter-electrode current value and the applied voltage value using a learning model for estimating the electrical characteristics inherent to the device from the inter-electrode current value and the applied voltage value. A correction value for correcting the inter-electrode current value and the applied voltage value is determined such that the estimated electrical characteristic is a reference electrical characteristic.
Owner:MITSUBISHI ELECTRIC CORP

Diagnostic device for power supply device for electric discharge machine

A simulated current generation unit is connected in series to a power supply device for an electric discharge machine in a state in which a contact and a contact are in contact with each other and generates a simulated current (Isim) for simulating current caused by dielectric breakdown of a discharge gap constituted by a workpiece and a pipe electrode, which face each other with a predetermined gap in order to perform electrical discharge machining of the workpiece by a narrow-hole electric discharge machine, based on an applied voltage of the power supply device for an electric discharge machine. An NC device judges the presence or absence of an abnormality of the power supply device for an electric discharge machine based on the simulated current (Isim) detected by a current detection unit.
Owner:MAKINO MILLING MASCH CO LTD

Intelligent debugging connecting piece for reducing blanking amount deviation of color master machine

The intelligent debugging connecting piece comprises a color master machine main body and a spiral feeder arranged on the color master machine main body, a feeding hopper is fixedly installed at the feeding end of the spiral feeder, a feeding hole is formed in the feeding hopper, a rectangular supporting plate is arranged above the feeding hopper, and the rectangular supporting plate is provided with a feeding hole. A plurality of weighing sensors are fixedly installed between the rectangular supporting plate and the top face of the feeding hopper, a feeding barrel is arranged above the feeding hopper, an inserting-connection discharging pipe is fixedly installed at the bottom end of the feeding barrel, an electric discharging valve is fixedly installed on a pipe body of the inserting-connection discharging pipe, a rectangular frame is fixedly installed on the pipe body of the inserting-connection discharging pipe, and the rectangular frame is fixedly connected with the rectangular supporting plate. The inserting discharging pipe penetrates through the rectangular supporting plate and is in inserting fit with the feeding hole, and at the moment, the rectangular frame abuts against the upper surface of the rectangular supporting plate; the whole weight of the feeding cylinder is completely accumulated on the weighing sensor, interference of external acting force is reduced, accurate weighing operation of the weighing sensor is facilitated, deviation of the discharging amount is reduced, and accuracy is guaranteed.
Owner:HEBEI MAIHANG TECHNOLOGY CO LTD

Multi-axis machining device and process for coupling spiral groove

The invention relates to a multi-axis machining device and process for a coupling spiral groove, and relates to the technical field of machining, the multi-axis machining device comprises a wire cut electric discharge machine and a multi-axis tool, and the multi-axis tool at least comprises a fourth-axis driving motor, a fifth-axis driving motor and a clamp assembly; the core is that the clamp assembly is provided with the outer clamping jaw and the inner clamping jaw which are driven by the same air source and can be in mechanical linkage, cooperative clamping and automatic centering can be conducted on the inner surface and the outer surface of the workpiece, deformation of the thin-wall workpiece is effectively prevented, and the clamp assembly is adaptive to different wall thicknesses; during machining, the inclination angle of a workpiece is adjusted through the fourth shaft, the fifth shaft drives the workpiece to continuously rotate, and the fifth shaft and a cutting head of the wire cut electric discharge machine are in multi-shaft linkage, so that the high-precision coupling spiral groove is formed and machined in one step in one-time clamping. The problems of low efficiency and poor precision existing in traditional multi-time clamping machining are solved, and the machining quality and efficiency are remarkably improved.
Owner:SUZHOU HANQI CNC EQUIP CO LTD

Inertial interfacial manipulation method and geometries

The invention provides a system (1) for fluid manipulation, wherein the system (1) comprises a first liquid supply (10), a second liquid supply (20), a microfluidic device (100), a cavitation induction system (200), and a control system (300), wherein: the first liquid supply (10) is configured to provide a first liquid (15) to the microfluidic device (100); the second liquid supply (20) is configured to provide a second liquid (25) to the microfluidic device (100); the microfluidic device (100) comprises a hosting chamber (110), wherein the hosting chamber (110) has a chamber length (L) defined by a first chamber end (111) and a second chamber end (112), wherein the hosting chamber (110) has an average equivalent circular diameter (D) perpendicular to the length (L), wherein L ≥ 3*D; wherein the cavitation induction system (200) is selected from the group comprising a laser-based heating system, an electric discharge system, and a heater; and wherein the control system (300) is configured to control the first liquid supply (10), the second liquid supply (20), and the heating system (200), and wherein the control system (300) has an operational mode wherein: in a preparation stage the first liquid supply (10) and the second liquid supply (20) are configured to provide a liquid multilayer (400) in the hosting chamber (110), wherein the liquid multilayer (400) comprises n layers (450) sequentially arranged along the chamber length (L), wherein n ≥ 2, wherein adjacent layers (450) are distinct phases, and wherein the layers (450) comprise a first liquid layer (415) comprising the first liquid (15) arranged adjacent to a second liquid layer (425) comprising the second liquid (25); and in a cavitation stage the cavitation induction system (200) is configured to induce cavitation of the first liquid (15) at a first location (41), wherein the first location (41) is arranged in the first liquid layer (415).
Owner:UNIVERSITY OF TWENTE +1

Reciprocating wire electric discharge wire cutting inter-electrode chip removal device and chip removal method

ActiveCN116532734BImprove discharge environmentIncrease feed rateElectrical-based auxillary apparatusElectric dischargeControl system
The application discloses a reciprocating wire-cut electric spark wire-cutting inter-electrode chip removal device and method in the technical field of electric discharge machining, and aims to solve the problems of the prior art, such as difficultly greatly improving cutting efficiency, and easily producing burn marks on the surface of a workpiece when cutting a large amount of energy, and the like, and the device comprises a jet system, a liquid supply system and a control system. In the jet chip removal period of the discharge interval, the working liquid system is turned off, high-pressure airflow is sprayed into the machining area in the cutting gap of the workpiece, the etching products remaining in the cutting gap are blown out in time, and the heat generated by the discharge is taken away. The control system controls the jet system and the liquid supply system to work alternately and cyclically during the discharge, and displays the inter-electrode chip removal condition in the upper computer interface in real time. The application adopts grouped pulse discharge and jet chip removal during the discharge interval, simultaneously improves the cutting efficiency and the surface quality of the workpiece, and is beneficial to reducing the surface damage of the electrode wire.
Owner:NANJING COLLEGE OF INFORMATION TECH

Device for removing fractured tapered threaded section from heat exchange tube, and operating method

A device for removing a fractured tapered threaded section from a heat exchange tube, and an operating method, which relate to the field of heat exchanger maintenance, with a view to solving the technical problem of a tapered threaded section fractured in a heat exchange tube being unable to be effectively removed by using an electric hand drill for drilling or by mounting a wire extractor or by carrying out a reverse strike. A plate electrode (4) of the device is mounted on an electrical discharge machine gun head (1); electric corrosion is carried out on the tapered threaded section by means of the plate electrode (4) to form a notch; and a water output end of a water injection pipe (5) is arranged close to the front end of the plate electrode (4). The method is implemented using the following steps: step 1, fixing the electric discharge machine gun head (1) on a tube plate; step 2, selecting the plate electrode (4) to be made of a brass material; step 3, clamping and fastening the plate electrode (4) onto an electric discharge machine clamp (3); step 4, injecting tap water while starting the electric discharge machine gun head (1), and creating a straight notch on the side of the tapered threaded section close to a tube wall by means of repeated advancing and retreating of the plate electrode (4); and step 5, after the straight notch penetrates the tapered threaded section, unscrewing and removing the tapered threaded section.
Owner:HARBIN TURBINE +1

Grinding wheel electric discharge machining device

The utility model discloses a grinding wheel electric discharge machining device. The grinding wheel electric discharge machining device comprises a grinding wheel driving unit, an electrode machining unit and a working fluid circulating system, the grinding wheel driving unit limits a through hole in the center of the grinding wheel through the two connecting rods, the transmission shaft is limited in a screw of the grinding wheel and drives the grinding wheel to rotate, and the power device controls the two connecting rods to be attached. According to the grinding wheel electric discharge machining device, efficient and accurate electric discharge machining of the grinding wheel can be achieved, the machining quality and performance of the grinding wheel are improved, the requirement for the high-precision grinding wheel in the machining field is met, and the grinding wheel electric discharge machining device has wide application prospects and remarkable economic benefits.
Owner:QUNJI PRECISE IND (SUZHOU) CO LTD