76results about "Electric circuits" patented technology

The invention provides an under-water discharge machining system and method for a radiation environment. The under-water discharge machining system comprises a pulse power supply control system, an electric spark machining head device and a servo control system. The pulse power supply control system comprises a power supply control box, a rectifier and a power amplifier which are electrically connected in sequence. And the power amplifier is electrically connected with the servo control system and the electric spark machining head device. The electric spark machining head device is provided with a feedback signal wiring connected to the servo control system. The pulse power supply control system is matched with the servo control system to drive the electric discharge machining head device to guarantee the process of the workpiece to be machined, so that the problem that conventional electric discharge machining equipment cannot be used in the high-radiation and boron-containing water environment is solved.

The invention belongs to the technical field of machining and intelligent manufacturing, and particularly relates to an intelligent regulation and control system and method for discharge energy of a spark machine. Comprising a multi-mode gap state sensing module, a high-throughput data synchronous acquisition and preprocessing module, a discharge pulse real-time classification and feature extraction module, an LSTM-based gap state trajectory prediction module, a multi-target model prediction control module and a high-frequency pulse power supply execution module. By fusing the electrical parameters and the in-situ optical turbidity signal, multi-dimensional perception of the discharge state is realized, the future discharge trend is predicted by using an LSTM network, and an optimal pulse parameter combination is solved online by combining an MPC controller. By the adoption of the technical scheme, dynamic optimal balance of the material corrosion rate, the surface quality and the stability in the machining process can be achieved, and the overall machining benefit is improved.

A wire electrical discharge machine (10) comprises: a groove width calculation unit (30) which calculates the groove width of a machining groove (46); a display control unit (32) which causes a display unit (38) to display the machining groove (46), having the calculated groove width, along a machining path (44) obtained by adding an offset value to a programed path (42) defined by a machining program; and a contact point detection unit (34) which detects, in the machining groove (46) displayed along the machining path (44), a point at which a contact with the machining groove (46) occurs.

The invention discloses a passive bipolar movable mask electrochemical machining device and method for a workpiece. The device comprises a power supply control system, an electrochemical machining system, a motion control system and an electrolyte circulating system, the electrochemical machining system is provided with a first electrochemical machining tank and a second electrochemical machining tank which are oppositely arranged, two electrodes are arranged in each electrochemical machining tank, and two movable masks are pressed and attached to the two faces of a workpiece to form a mask structure. The motion control system drives the two grooves to be closed or separated; the electrolyte circulating system forms flushing and sucking liquid circulation facing the surface of a workpiece through a flushing pipe and a liquid sucking pipe; the power supply control system intermittently switches the polarities of the two electrodes, so that charge distribution on the two sides of the workpiece is alternately changed, and passive bipolar electrochemical machining is realized; according to the method, photoresist is replaced by the movable mask, the process is simplified, the efficient liquid flushing and absorbing mode and the electrostatic induction machining mode are combined, the inter-electrode mass transfer and electric field uniformity are remarkably improved, and the machining efficiency, precision and depth-diameter ratio are improved.

A numerical control device for controlling electrical discharge machining (EDM) includes: a program path generation unit that parses a machining program consisting of multiple machining steps including roughing, semi-finishing, and final finishing to generate program paths for each machining step; a machining condition storage unit that stores multiple machining conditions suitable for machining steps and at least one machining condition suitable for unmachined portions; and a machining condition modification unit that, when unmachined portions are generated in a previous machining step, modifies the machining conditions of the current machining step to machining conditions suitable for the unmachined portions.

Provided is a wire electrical discharge machine (10) which, when a voltage (V) between a wire electrode (18) and a workpiece (W) is lower than a threshold value (VTH), determines that the wire electrode (18) and the workpiece (W) have come into contact with each other. The wire electrical discharge machine (10) comprises: an acquisition unit (34) that acquires a set value (44) for a factor that fluctuates the voltage (V) between the wire electrode (18) and the workpiece (W); and a threshold value determination unit (36) that calculates the threshold value (VTH), on the basis of a reference value (32) of the factor and the acquired set value (44).

Systems (10) and methods for characterizing an electrical discharge drilling process using ultrasound are provided. The characterization of the electrical discharge drilling process facilitates estimating cycle times and electrode (18) consumptions for future electrical discharge drilling tasks. An electrical discharge drilling machine includes a base (14) for supporting a workpiece (16), an electrode (18) operable to drill a hole (20) in the workpiece (16) using an electrical discharge, and an ultrasonic probe (30) installed on the base (14) and oriented toward the workpiece (16) when the workpiece (16) is supported by the base (14).

The present application relates to the technical field of tire manufacturing, and particularly relates to a segment and a processing method thereof, wherein the segment comprises a cover, a base, a middle sleeve insert ring, a plurality of sliding blocks and a plurality of bolts, one side of the cover is detachably connected with the inside of the middle sleeve insert ring through a part of the bolts, the bottom of the middle sleeve insert ring is detachably provided with the middle sleeve through a part of the bolts, the inside of each sliding block is lapped with a pattern block, and the segment comprises an electric spark cutting machine tool and a ring rolling machine, the electric spark cutting machine tool comprises an electrical module and a mechanical module, the electrical module comprises an image acquisition module, a data collection module, a discharge state prediction module and an upper computer control program module. The present application has the effects that the relationship between the spark characteristics and the discharge state is summarized based on the collected data, the processing state is accurately predicted and tracked, the discharge frequency and power are controlled in real time, the processing parameters are controlled, and the precision of the segment processing is improved.

The invention relates to a method and device for electrical Wire electrical discharge machining method (WEDM) for forming a desired pattern on a workpiece by a WEDM machine tool, in which a preliminary voltage pulse is applied to a gap between a wire electrode and a workpiece, and in which, at the breakdown of said preliminary voltage pulse, a first machining discharge pulse is applied to the wire electrode.

This invention relates to an adjustable electrical discharge machining (EDM) apparatus and method, comprising a stage and an EDM unit. The stage is used to place a workpiece with a defined processing target area. The EDM unit's discharge electrode cuts the processing target area of ​​the workpiece along a first cutting direction using at least one processing parameter. The processing parameter is adjusted according to changes in a specified parameter of the workpiece to a first value, thereby using the adjusted processing parameter to perform a second cutting step on the processing target area of ​​the workpiece. This invention proposes a segmented cutting technique, which can solve the problem of cutting speed (mm) caused by changes in specified EDM cutting parameters. 2 The problem of slowing down ( / min) and increasing the total cutting time.

The wire breakage location estimation device (58) includes: a torque acquisition unit (70) that acquires the torque (Tq) of the winding motor (52); a determination unit (72) that determines whether the rear end (12a) of the wire electrode (12) has passed the winding roller (48); and a rotation angle acquisition unit (74) that acquires the rotation angle (A) of the winding motor (52). RO ); and a wire breakage location estimation unit (76), which determines the rotation angle (A) from the wire electrode (12) breakage to the point where the rear end (12a) passes through the winding roller (48). RO ), estimating the breakage location of the line electrode (12) (P BR ).

This invention provides a method for controlling the rate of change of current in an electrical discharge pulse power supply. The electrical discharge pulse power supply includes a high-voltage breakdown circuit for gap breakdown machining in electrical discharge processing, a constant current source circuit for controlling the peak current of the pulse discharge, and a current waveform control circuit for controlling the rate of change of current at the leading and trailing edges of the output current waveform. The pulse power supply of this invention adopts an energy-saving design, eliminating power consumption and heat dissipation problems caused by current-limiting resistors in traditional power supplies. It meets different needs in actual processing and has better market applicability. It can effectively control the output current waveform to rise and fall at a certain slope, increasing the variety of output current waveforms, resulting in high processing efficiency and low electrode loss, thus meeting different processing requirements in actual production.

The invention relates to the technical field of mold machining, and discloses a workpiece processing method, device and equipment and a medium. The method comprises the steps that a discharge plan is obtained, and the electrode number of each discharge electrode in each electrode set needing to be used in the discharge plan is determined; according to the numbers of all the electrodes, determining fine discharge electrodes in each electrode group and the number of the fine discharge electrodes, and according to the number of the electrodes, detecting whether the fine discharge electrodes needing segment reservation exist in each electrode group or not; when it is detected that a fine discharge electrode needing segment reservation exists in at least one electrode set, program updating is conducted on the discharge equipment according to the type of the discharge equipment, and an updating program corresponding to the discharge equipment is obtained; and processing the workpiece to be processed according to the update program corresponding to the discharge equipment associated with all the fine discharge electrodes reserved at the required segment position to obtain a target workpiece. According to the method, segment reservation is added in the discharge plan, so that the discharge program is updated, and the discharge machining efficiency is improved.

The present invention relates to a method for simulating the manufacturing of a component, in particular comprising at least one blade (8.1) and / or a blade carrier (8) of a gas turbine, by means of electrochemical machining, wherein the method comprises the step of: providing input parameters (S10; S10'), and the, in particular repeated, sequence of steps: calculating (S20; S20') an electrochemical machining operation based on the provided input parameters; and calculating (S30; S30') a component geometry based on this electrochemical machining operation. The invention further relates to a method for manufacturing a component by means of electrochemical machining, a method for manufacturing a cathode for this manufacturing of a component, a method for designing the manufacturing of the component, and a system or computer program (product).

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.

The solid PCD / PCBN cutting tool tip with coolant through-holes of this invention is made of polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN) and contains 1-3 coolant holes. The manufacturing process begins with the preparation of part A, which is formed from PCD or PCBN. To improve its electrical conductivity, part A is joined to part B, a conductive material such as cemented carbide or steel, by brazing with a silver solder paste. Subsequently, the coolant holes in the brazed assembly of part A and part B are formed using a high-voltage electrical discharge machining (EDM) machine. After drilling, parts A and B are separated by heating to a temperature of 650 °C or higher. In the final step, part A (now with through-holes) is brazed onto a cemented carbide shank that already contains matching holes to ensure the alignment of the coolant channels.

This invention relates to the technical fields of human-machine interaction and machine tool programmable control systems in electrolytic machining applications. It provides an electrolytic method and a split-type electrolytic equipment based on a machine tool programmable control system. By configuring three positive and negative pulse combinations corresponding to different electrolyte states and workpiece machining complexities, and selecting one of the three positive and negative pulse combinations that is suitable for the electrolyte state and workpiece machining complexity, the first and second electrolytic machine tools are controlled to perform electrolytic machining on workpieces at multiple stations. This enables the configuration and selection of the three positive and negative pulse combination types, improving the intelligence level and stability of workpiece electrolytic machining.

The present invention relates to a method of processing for an electrical discharge machining machine. A method for generating a cavity model to be applied to a part machined by an electrical discharge machining machine (EDM) using a tool electrode, the method comprising: a. generating a pre-EDM part model defining the geometry of a part to be eroded by the EDM machine to obtain a final part; b. generating an electrode model defining the geometry of an electrode electrode to be applied to erode the part; c. determining a cavity model defining the geometry of a cavity representing the volume of material to be eroded by the electrode based on the pre-EDM part model and the electrode model.

To address wear issues and improve performance, we manufacture hard tips for PCD / PCBN cutting tools that have coolant through-holes. [Solution] The hard tip for PCD / PCBN cutting tools having coolant through holes according to the present invention is made from PCD or PCBN and has 1 to 3 coolant holes. The manufacturing process begins with creating a part A made of PCD or PCBN. To enhance conductivity, part A is joined to part B, which is a conductive material such as carbide or steel, by brazing with silver brazing paste. Next, coolant through holes are formed in the brazed joint of parts A and B using a high-voltage electrical discharge machine (EDM). After drilling, parts A and B are separated by heating to a temperature of 650°C or higher. In the final step, part A is brazed to a carbide shank that already has holes that fit part A, ensuring that the coolant paths are properly aligned.

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.

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.

The application discloses an embedded numerical control electro-processing system and relates to the technical field of numerical control electro-processing.The application comprises a processing unit, a power management unit, a console, a planning module and a coordination module, wherein the processing unit comprises an ARM unit, a DSP unit, a five-axis motor control module, an HDMI module, an RJ45-HUB, a USB-HUB, an FPGA unit, a hand wheel serial port, an RS485 serial port and an IO signal processing module; the power management unit comprises a protection module and a filtering module; the port of the console is in communication with the port of the planning module; the output end of the planning module is connected with the input end of the coordination module; the output end of the ARM unit is connected with the input end of the planning module; and the port of the coordination module is in communication with the port of the ARM unit.The planning module of the application can automatically generate a production plan and automatically update and optimize the production plan according to the establishment of a general production model, so that the production plan is more reasonable, and the coordination module can intelligently schedule the processing tasks and graphic calculation.

The invention discloses an electric cutting device and method for machining mold accessories, and relates to the technical field of mold electric cutting. On the basis of a conventional electric cutting equipment structure, a full-bridge tension sensor is installed between a wire collecting workbench and a guide wheel set in combination with two key values of tension fluctuation and current fluctuation; the current detection module is connected with the discharge system in series to obtain a real-time current value, the tension and current reference intervals under different working conditions are pre-stored by additionally arranging the coupling control module in the working period, and the tension and current reference intervals under different working conditions are calculated through actions such as reference parameter calibration, two-parameter real-time acquisition, coupling state two-way judgment and closed-loop coupling optimization. A dynamic incidence relation between tension and discharge current is established, a grading adjustment and compensation mode is adopted according to deviation grades, the limitation of single parameter adjustment is broken, two-way cooperative regulation is achieved, the machining quality is ensured on the premise that the wire breakage risk of the electrode wire is reduced, and the machining preparation period is shortened.

The wire electric discharge machine (10) of the present invention has: an average interelectrode voltage calculation section (32) that calculates an average interelectrode voltage of an interelectrode; a correction section (34) that obtains a corrected average interelectrode voltage in accordance with a machining speed of a wire electrode (12) with respect to a workpiece (14); and a motor control section (36) that controls an X-axis motor (24) and a Y-axis motor (26) in accordance with the corrected average interelectrode voltage to make the size of the interelectrode during machining constant, and the correction section (34) obtains the corrected average interelectrode voltage in accordance with a formula that has the average interelectrode voltage as a numerator and a value obtained by multiplying the machining speed by a coefficient as a denominator.

A wire electrical discharge machining equipment for different workpiece heights comprises a wire electrode, a machining detecting device and a controller. The wire electrode has an electrode length and is configured to machine a workpiece. The machining detecting device is configured to detect and obtain a machining parameter set of the wire electrode while machining the workpiece. Wherein, the machining parameter set comprises a discharge frequency, a working voltage and a discharge parameter, and the discharge parameter is corresponding to a material removal amount. The controller is connected to the wire electrode and the machining detecting device. The controller is configured to compute a workpiece height of the workpiece according to the discharge frequency and the working voltage, and compute a machining feed rate according to the workpiece height and the material removal amount. The controller is configured to adjust the electrode length to the workpiece height and controls the wire electrode to machine the workpiece with the machining feed rate.

The application relates to the technical field of wire cut electrical discharge machining, and discloses a wire cut electrical discharge machining control method based on infrared thermal imaging. An infrared thermal imager is installed at a proper distance and adjusted to a proper focal length, so that the infrared thermal imager can completely and clearly shoot a machining workpiece. A water pump, a wire feeder and high-frequency pulses in a wire cut electrical discharge machining control system are started, so that the wire cut electrical discharge machine is in a machining state. The infrared thermal imager starts shooting data, and transmits a thermal imaging image to a PC end in real time. The PC obtains the temperature of the edge of the workpiece close to the discharge side of the electrode wire according to a temperature feature extraction algorithm. The PC controls the wire cutting machining according to a wire cutting machining control algorithm based on the machining temperature. The wire cut electrical discharge machining control method based on the infrared thermal imaging is different from a method of determining a threshold value through a large number of experiments, and the desired temperature (threshold value) of the machining workpiece can be determined by searching a metal material melting point table, so that a large amount of materials and time are saved.

According to an embodiment of the present disclosure, a control device (20) of a wire electrical discharge machine (10) comprises: a first rendering control unit (162) for rendering a machining pathway (RA) on a display device (124), using an electrode position (EP) of a wire electrode (60) as a display position of a start position (SA) of the machining pathway; a storage control unit (158) for storing the display position of the start position in a storage device (122); and a second rendering control unit (164) for re-rendering the machining pathway on the display device, using the display position stored in the storage device as the start position.

This invention belongs to the field of machining and intelligent manufacturing technology, specifically a smart control system and method for EDM discharge energy. It includes a multi-modal gap state sensing module, a high-throughput data synchronous acquisition and preprocessing module, a discharge pulse real-time classification and feature extraction module, an LSTM-based gap state trajectory prediction module, a multi-objective model prediction control module, and a high-frequency pulse power supply execution module. By fusing electrical parameters and in-situ optical turbidity signals, it achieves multi-dimensional perception of the discharge state and uses an LSTM network to predict future discharge trends, combined with an MPC controller to solve for the optimal pulse parameter combination online. By adopting the above technical solution, this application can achieve a dynamic optimal balance between material removal rate, surface quality, and stability during processing, improving overall processing efficiency.

The invention relates to a method for machining a multi-material workpiece by electrical discharge machining, the workpiece comprising at least two different phases. The machining process is performed by applying discrete pulses to the gap between the electrode and the multi-material workpiece. An ignition voltage is applied to the gap to cause dielectric breakdown, and then a discharge current pulse is applied to cause material removal or material remelting. At least two different phases of the multi-material workpiece are machined in the same machining operation, and the different phases of the multi-material workpiece at which a current discharge occurs are identified in real time based on monitored process signals that are stable at or after a dielectric breakdown. At least one pulse parameter setting of the current discharge current pulse is adjusted based on the identified different phases of the multi-material workpiece.

Methods and systems of electrochemical machining are provided. The method can include applying a first electrical potential to a tool electrode of an electrochemical machining system to generate a primary electric field. The electrochemical machining system can include a workpiece opposite the tool electrode, at least one bias electrode, and at least one fluid delivery channel within the at least one bias electrode. The method can also include applying at least one second electrical potential to the at least one bias electrode. The method can also include delivering a charged electrolyte solution through the at least one fluid delivery channel into the electrolyte solution. The application of the at least one second electrical potential and the delivery of the charged electrolyte solution generates at least one secondary electric field adjacent to the primary electric field and quenches at least one location of the primary electric field.