48 results about "Electromagnetic forming" patented technology

The invention discloses a forming method suitable for a Laval type pipe, relates to the technical field of Laval type pipe machining and manufacturing, and innovatively combines two high-speed forming processes of electromagnetic forming and electro-hydraulic forming for Laval type pipe machining. Electromagnetic force can be utilized to realize rapid and uniform diameter shrinkage of the pipe, and damage caused by mechanical contact is avoided; according to the electro-hydraulic bulging, the pipe can be bulged according to a preset shape by accurately controlling the liquid pressure, and a good forming effect is achieved. The method is simple in experimental device, high in operability, high in energy utilization rate, high in forming speed and high in forming precision. In order to solve the technical problems existing in the production of the Laval type pipe, the forming characteristics of electromagnetic forming and electro-hydraulic forming are combined, a method of combining diameter shrinkage of a thin-wall pipe driven by pulsed magnetic field force and controllable bulging of electro-hydraulic forming impact force is provided, and efficient, accurate and low-cost machining of the Laval type pipe is achieved.

The application discloses a finite element simulation method suitable for multi-step electromagnetic forming effect evaluation and a related device, relates to the technical field of metal plate electromagnetic incremental forming and finite element simulation, and the method comprises the following steps: constructing an initial constitutive model of a to-be-formed plate based on a first uniaxial tensile test; performing finite element simulation on a multi-step electromagnetic forming process of the to-be-formed plate, and recording stress and strain distribution and strain rate distribution of a deformation area; performing a second uniaxial tensile test at each stage of the multi-step electromagnetic forming process according to the strain rate distribution, and integrating hardening models at all stages into a constitutive model for characterizing material whole-process forming; based on the constitutive model, re-performing multi-step electromagnetic forming finite element simulation, outputting forming effect evaluation parameters at each stage, and adjusting process parameters according to the forming effect evaluation parameters. The application can improve the accuracy of forming effect evaluation.

The present application relates to a pipe electromagnetic bulging method using a reinforced conductor ring, and belongs to the field of electromagnetic forming control of metal workpieces. The present application increases a reinforced conductor ring between a driving coil and a pipe to be formed, and the reinforced conductor ring is arranged at the end of the bulging area of the pipe to be formed. The reinforced conductor ring is used to enhance the magnetic field intensity at the end of the bulging area of the pipe to be formed, and the uniform bulging of the pipe is realized by using the reinforced conductor ring. The present application also discloses a corresponding pipe electromagnetic bulging device. The present application solves the problem of the influence of the end effect on the uniformity of the pipe bulging in the traditional pipe bulging method, realizes the uniform bulging of the pipe, improves the flatness of the bulged pipe, and effectively improves the problem of the wall thickness reduction of the pipe bulging area in the traditional pipe bulging method.

The invention discloses a preparation method, system, device and equipment of an electromagnetic forming coil and a storage medium, and the method comprises the steps that target process parameters of a plate in electromagnetic forming coil machining are obtained, the plate comprises a to-be-machined metal thin plate or pipe, and the target process parameters comprise the target shape and the target size of the plate; generating a control signal based on the target process parameter; generating a forming force based on the control signal; and the forming force acts on the plate, so that the plate is deformed under the action of the forming force. The effect of improving the preparation and production efficiency of the electromagnetic forming coil is achieved.

This application belongs to the field of metal electromagnetic high-speed forming manufacturing technology, specifically disclosing a method and system for obtaining an electromagnetic forming actuator. The method includes: determining the basic structural parameters of the electromagnetic forming actuator with the goal of maximizing the magnetic energy utilization efficiency and the electromagnetic force impulse on the workpiece; obtaining the bottom morphology function of the electromagnetic forming actuator based on the electromagnetic forming force field requirements, and determining the parameters to be optimized and their value ranges in the bottom morphology function; determining a typical deformable workpiece configuration based on the workpiece deformation process and the target forming shape; calculating the weighted average of the magnetic field distribution uniformity index and magnetic energy efficiency of the electromagnetic forming actuator with different bottom morphology parameters on the typical deformable workpiece configuration; and selecting the optimal bottom morphology parameters based on a multi-objective optimization model with the goal of improving the magnetic field uniformity and magnetic energy efficiency. This application fundamentally solves the problem of uneven electromagnetic force caused by the structure of the electromagnetic forming actuator.

A kind of metal pipe fitting electromagnetic forming device and method based on laser heating, with positioning system including positioner, first guide rail, first numerical control moving platform, for accurately positioning metal pipe fitting and mold coordinates;Conveying system includes second guide rail, numerical control moving platform, motor, for realizing the rotation and movement of metal pipe fitting;Heating system includes laser heating device, temperature detector;Electromagnetic forming system includes spiral tube coil, mold, capacitor, DC power supply and control switch;Its characterized in that, motor, fixture, metal pipe fitting, mold, spiral tube coil are horizontally distributed on the same axis, metal pipe fitting can be rotated with the help of motor, and can be moved in the gap between spiral tube coil and mold with the aid of conveying system.The present application can realize uniform heating when metal pipe fitting electromagnetic warm forming, greatly improve heating efficiency, reduce heat affected zone, and improve the position accuracy of metal pipe fitting local microstructure electromagnetic forming.

The application discloses a kind of high-speed fluid driving sheet accurate forming device and its forming method, including electromagnetic forming coil, coil reinforcement plate, conductive driving block, driving punch, fluid constraint mould and forming mould, electromagnetic forming coil is installed in coil reinforcement plate, the lower end of driving punch is provided with coil reinforcement plate, and the upper end is sealed slidingly connected with the constraint cavity in fluid constraint mould, forming mould is set to be able to press the sheet in the upper of constraint cavity, fluid with liquid level lower than sheet is arranged in constraint cavity, and the side of forming mould close to sheet is provided with forming cavity.The application adopts inverted forming device, when liquid level is lower than sheet surface, electromagnetic forming coil discharge can drive punch to accelerate liquid.When high-speed liquid and sheet contact, sheet is endowed with very high deformation speed, so as to improve the forming limit of material.

The invention belongs to the field of metal electromagnetic forming manufacturing, particularly relates to a workpiece electromagnetic forming method and device based on vortex attraction, and aims to solve the problem of axial non-uniformity of a pipe fitting or the problem of radial non-uniformity of a plate in a traditional electromagnetic forming technology. A conductor is introduced into the middle of a driving coil, eddy current induced in the conductor and eddy current in a to-be-formed metal workpiece mutually generate electromagnetic attraction force according to the eddy current attraction principle, the electromagnetic attraction force is opposite to electromagnetic force for workpiece forming machining in direction, and the deformation amount of the middle of the workpiece is reduced; uniform deformation of the pipe fitting in the axial direction or uniform deformation of the plate piece in the radial direction is achieved. According to the method, the quality and precision of the formed workpiece are improved, and new possibility is provided for further application of the electromagnetic forming technology in the field of high-precision manufacturing.

The application relates to a step-by-step loading type pipe gradual electromagnetic welding method of bidirectional electromagnetic force, and belongs to the field of electromagnetic forming of metal workpieces. The welding method comprises pretreatment before welding, a gradual welding process and a repair welding process. In the gradual welding process, a gradual conduction type is adopted to load electromagnetic force on the welding areas of the inner pipe and the outer pipe by using an expanding coil in the inner pipe and a compression coil outside the outer pipe. The application realizes pipe welding from a line to a plane, facilitates accurate control of the pipe welding process, improves the pipe welding effect and quality, adopts multiple end coils, compression coils and expanding coils to realize diversified electromagnetic force application modes, improves the pipe welding strength, and makes the pipe welding part more firm.

The invention belongs to the field of electromagnetic forming, and particularly discloses a workpiece electromagnetic forming numerical simulation modeling method and system.The method comprises the steps that a trained first full-connection deep neural network model is adopted, and a tangential magnetic field component is calculated according to workpiece deformation real-time surface coordinates and normal vectors; dynamic magnetic pressure is generated in combination with a magnetic pressure correction coefficient output by the trained second full-connection deep neural network model; and applying the magnetic pressure to a mechanical model of the workpiece as a surface load, and iteratively solving a bidirectional coupling effect of workpiece deformation and an electromagnetic field. The problem that an existing workpiece electromagnetic forming modeling method cannot be compatible in the aspects of calculation efficiency, geometric adaptability and physical consistency is solved.

The application discloses a tube plate simultaneous forming device and method, which comprises a magnetic collector, a tube fixing mechanism, a plate fixing mechanism, a die assembly and a power supply mechanism; a containing hole penetrating through the magnetic collector is formed in the magnetic collector, a tube to be necked is inserted into the containing hole, and the outer wall of the magnetic collector comprises a plurality of side surfaces, wherein a magnetic conducting gap is formed in one of the side surfaces and communicates with the containing hole. The application has the advantages that electricity is directly supplied to the plate to be processed, the use of a coil is avoided, the problem of low mechanical strength and easy failure of the coil in the electromagnetic forming process is solved, the deformation resistance of a high-strength difficult-to-deform workpiece is reduced by using a self-resistance heating method, and for the processing of plates and tubes of different sizes, the coil does not need to be designed, the general structure of the magnetic collector does not need to be redesigned, and only the size of the magnetic collector needs to be changed to adapt to the deformation area of the tube plate, so that the cost is greatly reduced.

The invention provides an electromagnetic forming device for a part drawing process. The electromagnetic forming device comprises a male die, a female die and a female die, the female die is matched with the male die; the radial side thrust coil is used for providing radial side thrust for the plate; the axial deep drawing coil is used for providing axial thrust for the male die, and the male die extrudes the plate; the lower induction coil and the upper induction coil are used for providing circumferential pressure stress for reducing a plate flange area; wherein the radial lateral thrust coil, the axial drawing coil, the lower induction coil and the upper induction coil are connected in series; meanwhile, the invention further provides an electromagnetic forming method for the part drawing process.

The application discloses an electromagnetic forming online measuring device and a measuring method, and is characterized in that a curvature arc is arranged at one end of an electromagnetic forming coil assembly to adapt to the forming surface of the to-be-formed material with different shapes, the other end of the electromagnetic forming coil assembly is movably connected with a supporting rod, the electromagnetic forming coil assembly is driven to swing relative to the supporting rod through a motion device, and then the angle relationship between the electromagnetic forming coil assembly and the forming surface is calculated through the included angle between the electromagnetic forming coil assembly and the supporting rod; a distance detection device is arranged, the distance detection device is used for detecting the distance between the electromagnetic forming coil assembly and the forming surface of the to-be-formed material and the point cloud data of the forming surface, and then the electromagnetic force size and direction of the electromagnetic forming coil assembly are accurately adjusted through the angle relationship between the electromagnetic forming coil assembly and the forming surface, the distance and the point cloud data of the forming surface, so that the electromagnetic forming precision of the electromagnetic forming coil assembly on the to-be-formed material is ensured.

The application discloses a kind of quick closing switch based on real space gap and its using method, quick closing switch is composed of vacuum cavity and electromagnetic forming device, upper cover plate has input drainage plate and is connected with conductive rod, lower cover plate is concave structure, not only as lower electrode is connected with output drainage plate, and have the effect of flyer, between upper and lower cover plate, through ceramic shell insulation;When quick closing switch receives action signal, first make thyristor switch conduction, pulse capacitor group discharges to forming coil, and pulse large current flows in coil, so that forming coil generates a transient magnetic field, and the lower cover plate placed in the magnetic field induces the eddy current opposite to the coil, so that the lower cover plate is deformed at high speed under the action of electromagnetic repulsion and collides with the conductive rod, and the lower cover plate and the conductive rod form a compression joint or solid-phase welding effect, so that the switch is quickly closed, and the whole switch action process is completed within 50 μs, solve the problem of long mechanical switch action time.

The invention discloses a buffer system parameter design method for electromagnetic forming, a buffer system and an electromagnetic forming system.The buffer system is used for buffering acting force of electromagnetic pulse force of a forming coil on a machine tool and comprises a hydraulic buffer unit, a gas-liquid buffer unit and a one-way throttling unit; the hydraulic cylinder is arranged on the machine tool, and the forming coil is arranged on the end face of the end, extending out of the hydraulic cylinder, of the piston. And designing the buffer system parameters according to the buffer system design performance indexes. The acceleration of the piston and the forming coil is limited through the inertia of the piston and the oil pressure together, the pulse electromagnetic force is buffered, the back-off amount of the piston and the forming coil in the pulse electromagnetic force acting stage and the buffering stage can be reduced, the stability of the distance between the forming coil and a workpiece is guaranteed, and the change of the pulse electromagnetic force is avoided; the forming effect is ensured.

The utility model discloses a coil-free electromagnetic forming device for a metal plate. The coil-free electromagnetic forming device comprises a base, a male die, a height adjusting mechanism, a pressing assembly, a metal plate to be formed and an induction block. A horizontal base plate is arranged at the top of the base; the male die is placed on the base plate; the lower end of the height adjusting mechanism is connected with the base, and the upper end of the height adjusting mechanism is connected with the pressing assembly. The two ends of the to-be-formed metal plate are pressed through the pressing assemblies correspondingly. The two ends of the metal plate to be formed are connected with external current through wires to form a loop. And the induction block is arranged above the metal plate to be formed. The metal sheet forming device has the advantages that no coil is arranged, pulse current is directly applied to the metal sheet to be formed, the high-intensity magnetic field of the metal sheet and the eddy current magnetic field generated by the induction block interact to generate mutual repulsive electromagnetic repulsive force, forming of the metal sheet to be formed is achieved, and the problem that the coil is damaged is solved; and the production, manufacturing and maintenance cost is reduced.

The invention discloses a forming production process of an integrated rear axle housing, which comprises the following steps of: 1, selecting a seamless steel tube as a raw material, and placing a driving coil in the seamless steel tube to provide electromagnetic force for forming; secondly, the seamless steel pipe with the drive coil is placed in a mold, and the drive coil is connected with electric appliance control equipment for electromagnetic forming; thirdly, the mold is started, primary electromagnetic forming is conducted after the upper mold and the lower mold are closed, and then a semi-finished product is obtained; according to the forming production process of the integrated rear axle housing, the electromagnetic forming technology is used for replacing an internal high-pressure forming mode, the investment cost for producing the integrated rear axle housing is effectively reduced, the production benefit is improved, meanwhile, only the forming procedure is needed for electromagnetic forming, and therefore the investment cost of equipment and molds is effectively reduced, and the production efficiency is improved. And electromagnetic forming also belongs to a high-strain forming process scheme, so that the formability of the material can be greatly improved, and the cracking problem of the integrated rear axle housing is effectively solved.

The invention discloses an electromagnetic coil accurate pose discharge forming system and a forming method, belongs to the technical field of electromagnetic forming, and aims to solve the problems that in the skin electromagnetic forming process in the prior art, the pose of an electromagnetic coil relative to a skin cannot be correspondingly adjusted according to the real-time contour of the skin, and the cost is low. And proper electromagnetic force cannot be applied to the skin through an electromagnetic coil. By detecting the skin profile in real time, the position and posture parameters of the electromagnetic coil relative to the skin profile can be adjusted in real time according to the change of the skin profile in the moving process of the electromagnetic coil, it is guaranteed that the electromagnetic coil can apply appropriate and reasonable electromagnetic force to the skin at the most appropriate position and posture, and finally the forming precision of the skin profile is improved.

The present invention discloses a multi-coil array electromagnetic forming device based on modular coil units, comprising a workbench and at least one coil mounting plate, wherein the coil mounting plate is arranged on the front, rear, left, right or top surface of the workbench, and at least one coil unit is arranged on the coil mounting plate via a movable assembly, wherein the coil unit is mounted on the movable assembly via a pluggable structure, and the movable assembly not only adjusts the distance between adjacent coil units, but also adjusts the moving distance of all coil units. The pluggable structure enables the coil units to be mounted on the coil mounting plate, and then the coil mounting plate is mounted on the corresponding surface of the workbench, so that a coil array can be formed on the workbench, providing the electromagnetic force required for part forming. Different types of coil arrays can be formed by different coil units and coil mounting plates on different sides, thereby meeting the needs of forming diversified parts.

The invention belongs to the technical field of metal electromagnetic high-speed forming manufacturing, and particularly discloses a method and system for obtaining an electromagnetic forming driver, and the method comprises the steps: taking the magnetic energy utilization efficiency of the electromagnetic forming driver and the maximum electromagnetic force impulse on a workpiece as targets, and determining basic structure parameters of the electromagnetic forming driver; based on the electromagnetic forming force field requirement, a bottom morphology function of an electromagnetic forming driver is obtained, and to-be-optimized parameters and a value range in the bottom morphology function are determined; determining a typical deformation workpiece configuration based on the deformation process of the workpiece and the target forming shape; and calculating a weighted mean value of the magnetic field distribution uniformity index and the magnetic energy efficiency of the electromagnetic forming drivers with different bottom morphology parameters on the typical deformation workpiece configuration, and selecting the optimal bottom morphology parameter based on a multi-target optimization model by taking improvement of the magnetic field uniformity degree and the magnetic energy efficiency as a target. The problem that electromagnetic force is not uniform due to an electromagnetic forming driver structure and the like is fundamentally solved.

The application provides an electromagnetic forming device and a forming method, which comprises the following steps: a solenoid type coil is closely nested with the upper half of a magnetic field shaper; the lower half of the magnetic field shaper is arranged above a workpiece to be formed; a slit is arranged on the ring of the magnetic field shaper; a die is used to bear the workpiece to be formed; when the electromagnetic forming device works, the solenoid type coil generates a pulse magnetic field around the coil through pulse current discharge; the pulse magnetic field generates induced eddy current on the inner and outer surfaces of the upper half of the magnetic field shaper; the induced eddy current is conducted to the lower end surface of the lower half of the magnetic field shaper through the slit, so that the pulse magnetic field is reshaped and concentrated between the lower half of the magnetic field shaper and the workpiece to be formed, and a pulse electromagnetic force is generated on the forming area of the workpiece to be formed, so that the forming area of the workpiece to be formed is deformed towards the die under the action of the pulse electromagnetic force. The application realizes accurate and effective regulation and control of the spatial distribution of the forming magnetic field in the electromagnetic forming process of the plate.

The invention belongs to the field of electromagnetic crimping, and discloses a separable electromagnetic forming device and method for electromagnetic crimping of a cable joint, a magnetic collector body with an up-down split design is adopted, and a first magnetic collector is driven to move through a lifting mechanism so as to realize combination or separation. When the two magnetic collectors are combined, the two magnetic collectors are electrically connected through deformation of the diversion deformation piece, and a working area and a cavity are formed between the two magnetic collectors and used for crimping a cable connector and placing a magnetic field coil respectively. According to the split type structure, the problem of pulling out the cable joint is solved through mechanical separation, contact surfaces are ensured to be tightly attached through elastic deformation during combination of the flow guide deformation pieces, and ablation caused by point contact due to unevenness of the contact surfaces is reduced. The split type structure overcomes the problems that an integrated magnetic collector cannot be disassembled, and a connector cannot be pulled away after being formed, ablation is reduced through the design of a separable contact surface, the service life of the magnetic collector is prolonged, and therefore the practical application of the electromagnetic crimping technology in cable accessory installation is promoted.

The application discloses an electromagnetic coil precise pose discharging forming system and a forming method, and belongs to the technical field of electromagnetic forming. In the prior art, the position and posture of the electromagnetic coil relative to the skin cannot be adjusted according to the real-time profile of the skin in the process of skin electromagnetic forming, and thus the skin cannot be subjected to suitable electromagnetic force through the electromagnetic coil. The application can adjust the position and posture of the electromagnetic coil relative to the skin profile in real time according to the change of the skin profile during the movement of the electromagnetic coil through real-time detection of the skin profile, ensure that the electromagnetic coil can exert suitable and reasonable electromagnetic force on the skin in the most suitable position and posture, and finally improve the forming precision of the skin profile.

Two connecting rod mechanisms are symmetrically distributed on the upper portion of a platform left and right, each connecting rod mechanism comprises a guide rail extending front and back, sliding blocks are connected to the front end and the rear end of each guide rail in a sliding mode, sliding block bases are fixedly arranged on the sliding blocks, and the sliding block bases on the same side are connected in series through threaded rods. A first synchronous wheel is arranged in the middle of the threaded rod, and threads on the two sides of the threaded rod are arranged reversely. The working platform is made of insulating materials and fixed to the upper side of the upper base, two gaskets are arranged on the bottom face of the upper base, and fixing bases are arranged on the bottom faces of the gaskets and correspond to the sliding block bases on the same side in a one-to-one mode. The connecting rod at the front end of the guide rail and the connecting rod at the rear end of the guide rail are symmetrically arranged; a motor is fixed to the platform, and a second synchronizing wheel is arranged on an output shaft of the motor and is in transmission connection with the two first synchronizing wheels through belts. According to the utility model, the problems of non-automation of lifting of the workbench and non-insulation of the workbench surface in the electromagnetic forming equipment are solved.

The present invention provides an electromagnetic composite forming method for forming holes in artificially aged aluminum alloy tank bottoms. The method is characterized by constructing an electromagnetic composite forming device in the hole forming area based on the principle of electromagnetic loading, comprising a forming coil, rigid dies of different inner diameters, a rigid punch, and the aluminum alloy tank bottom. First, the rigid die with a smaller inner diameter is placed outside the aluminum alloy bottom, and the forming coil is placed inside the aluminum alloy bottom. Electromagnetic forming is used to complete the first hole forming operation. Then, the rigid die with a larger inner diameter is replaced with the previous rigid die with a smaller inner diameter. The rigid punch passes through the guide pins of the rigid die with a larger inner diameter and is placed inside the aluminum alloy bottom. The forming coil is placed on the rigid punch, and electromagnetic force is used to drive the rigid punch to complete the second hole forming operation. The electromagnetic composite forming method for forming holes in artificially aged aluminum alloy tank bottoms can improve the forming limit of aluminum alloy hole forming, improve stress distribution during forming, and achieve hole forming in artificially aged aluminum alloy tank bottoms.

The invention belongs to the field of metal workpiece electromagnetic forming, and discloses a pipe fitting welding device adopting an asymptotic electromagnetic welding mode, which comprises a first end coil, a second end coil, a plurality of compression coils, a plurality of bulging coils, an inner pipe fitting and an outer pipe fitting, the axes of the inner pipe fitting and the outer pipe fitting are aligned, and the welding area of the inner pipe fitting and the welding area of the outer pipe fitting are axially overlapped; the first end coil is used for applying axial electromagnetic force to the inner pipe fitting; the second end coil is used for applying axial electromagnetic force to the outer pipe fitting; the bulging coil is used for applying radial outward electromagnetic force to the inner pipe fitting; the compression coil is used for applying radial inward electromagnetic force to the outer pipe fitting. Line-to-surface pipe fitting welding is achieved, the pipe fitting welding process can be accurately controlled conveniently, and the pipe fitting welding effect and quality are improved. The multiple end coils, the compression coils and the bulging coils are adopted, so that diversified electromagnetic force applying modes are achieved, the welding strength of the pipe fitting is improved, and the welding part of the pipe fitting is firmer.

This utility model relates to the field of titanium bipolar plate processing and discloses an electromagnetic forming device for titanium bipolar plates in hydrogen fuel cells. The device includes a processing table, a supporting plate fixedly connected to the upper surface of the processing table, a drive frame mounted on the upper surface of the supporting plate, a lifting device in the middle section of the drive frame, a processing head fixedly mounted at the bottom end of the lifting device, a fixing mechanism on the inner surface of the supporting plate, and an ejection assembly at the lower part of the processing table. The fixing mechanism includes a clamping assembly. In this utility model, with the cooperation of the fixing mechanism, a motor drives a bidirectional threaded rod to move a moving plate, clamping plate one, and clamping plate two to achieve simultaneous clamping of the titanium bipolar plate on four sides. This eliminates the need for manual operation, improving work efficiency and ensuring the titanium bipolar plate is centered and fixed, thus guaranteeing subsequent processing quality. Furthermore, it requires only a single motor drive, reducing costs.

The invention discloses a skin part local characteristic electromagnetic pulse forming device and method, and relates to the technical field of metal plate part plastic forming manufacturing, the skin part local characteristic electromagnetic pulse forming device comprises an upper pressing beam, a mechanical arm, an electromagnetic coil and a multi-point stretch-forming die, and the multi-point stretch-forming die is installed on a fixed bottom plate; the two ends of the skin plate are tightly attached to the top face of the multi-point stretch-forming die after being clamped and tensioned through a jaw of a skin stretch-forming machine; the shape of the top surface of the multi-point stretch-forming die is adjustable; one end of the mechanical arm is fixed to the upper pressing beam, an electromagnetic coil is installed at the other end of the mechanical arm and used for conducting electromagnetic forming on the skin plate, and the position of the upper pressing beam can be adjusted. A multi-point stretch-forming die and electromagnetic forming are combined, and meanwhile, the high-efficiency characteristic of the multi-point forming technology and the high-precision characteristic of the electromagnetic incremental forming technology are utilized, so that high-efficiency and high-precision digital forming of the complex three-dimensional curved-surface-shaped part can be realized.

The application relates to a plate electromagnetic forming method based on a conductor ring, which comprises the following steps: determining the number of turns of a driving coil according to the forming specification requirement of a plate; determining the number of metal conductor rings and the size of each metal conductor ring; aligning the axis of the driving coil with the center of the forming area of the plate to be formed and fixing the driving coil; placing a plurality of metal conductor rings between the driving coil and the plate to be formed in sequence; supplying pulse current to the driving coil to form an electromagnetic force, and the plate to be formed is deformed under the action of the electromagnetic force. The application improves the distribution characteristics of the electromagnetic force by introducing the metal conductor ring between the driving coil and the plate to be formed, and realizes the uniform deformation of the plate under the premise of ensuring the forming efficiency.

The application discloses a metal sheet array microstructure electromagnetic forming device and an electromagnetic forming method thereof, which comprises a forming coil, a current collecting device, an array microstructure die, a pulse power source, and the upper part of the current collecting device is an annular part, the lower part is a left and right arranged side U-shaped structure, the forming coil is arranged in the annular part and is positioned through a reinforcing device, the array microstructure die is provided with array microstructure characteristics on at least one side, a sheet blank is arranged on one side of the array microstructure characteristics, and the sheet blank is inserted into the side U-shaped structure of the lower part of the current collecting device and is in contact with the current collecting device. During forming, the forming coil is electrified, a strong instantaneous pulse current is induced in the current collecting device by the forming coil, and when the induced current flows through the sheet blank and a metal plate, strong attraction is generated between the sheet blank and the metal plate to form the sheet blank and the metal plate. The application has reasonable structure, good forming effect and high precision, and can solve the problems of easy damage of a guide frame type uniform pressure coil in the prior art.