Large-scale thin-walled component forming device based on electromagnetic processing

Abstract

The integral forming and manufacturing of large-scale thin-walled components is a key manufacturing challenge in fields such as aerospace. Traditional forming methods, such as stamping and hydraulic forming, can only produce components with dimensions severely limited by the tonnage of the equipment, and the components are prone to wrinkling and cracking. Electromagnetic forming, as a special energy field forming and manufacturing method, has significant advantages in improving the forming limit of materials and suppressing wrinkling and cracking. However, existing single-step forming processes are difficult to meet the needs of the increasing size of components. This solution proposes a flexible mold and a multi-step forming process. The forming coil and receiving mold can move horizontally and vertically and adjust their angles to adapt to the shape of the workpiece. Through multiple electromagnetic impacts, the component is formed and manufactured.

Description

Technical Field

[0001] This invention relates to the field of lightweight component forming and manufacturing, and in particular to an electromagnetic forming and manufacturing apparatus for large-scale thin-walled components. Background Technology

[0002] Large-scale thin-walled components are key structural parts for high-end transportation equipment in aerospace and other fields. High-performance forming and manufacturing technologies are urgently needed for the development of equipment towards larger size, lighter weight, and higher reliability. However, these components involve complex forming of thin-walled, large curved surfaces, and require high material strength and post-forming performance, making their forming and manufacturing difficult. Traditional integral forming methods such as stamping and hydraulic forming face problems such as easy wrinkling and cracking of components, and the formable size is severely limited by the tonnage of the equipment. As the size of components increases, segmented forming and welding methods have to be adopted, which complicates the process and significantly reduces the overall performance of the components.

[0003] Electromagnetic forming (EMF) is a high-energy-rate special energy field manufacturing method that uses pulsed electromagnetic force to plastically process metal components. Compared with traditional quasi-static forming methods, it features non-contact operation, high strain rate, and single-mold operation. It offers significant advantages in improving material forming limits and precision while reducing tooling requirements, and is considered one of the most promising technologies for high-performance forming of large-scale thin-walled components. However, existing EMF technologies are still mainly based on single-step (single-time) forming. With the trend towards larger components, existing electromagnetic force loading methods face problems such as insufficient electromagnetic force loading and limited precision in large-scale electromagnetic force control due to the rapid attenuation of electromagnetic force with distance, making it difficult to meet practical application requirements. Summary of the Invention

[0004] This invention provides a large-scale thin-walled component forming device based on electromagnetic processing, which solves the problem that it is difficult to form large-scale thin-walled components in one step when using electromagnetic forming.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a large-scale thin-walled component forming device based on electromagnetic processing, including an annular base, annular movable frames at the upper and lower ends of the annular base, a forward extension frame on each annular movable frame, a vertically movable frame at the front end of the forward extension frame, a fixed platform at the center of the annular base, and a first receiving mold and an electromagnetic forming assembly. The first receiving mold and the electromagnetic forming assembly are connected to each vertical movable frame. The first receiving mold and the electromagnetic forming assembly are respectively distributed on both sides of the workpiece plate. A universal adjustment platform is provided on the side of the first receiving mold and the electromagnetic forming assembly away from the workpiece plate so that the angle of the first receiving mold and the electromagnetic forming assembly can swing. The universal adjustment platform is used to connect with the vertical movable frame. The electromagnetic forming assembly is provided with a coil plate facing the workpiece plate. The first receiving mold includes a cavity seat, and multiple independently retractable first receiving columns are provided in the cavity seat. The multiple first receiving columns are arranged in a horizontal row, and the ends of the first receiving columns are used to abut against the workpiece plate.

[0006] In a preferred embodiment, the cavity seat includes multiple arrayed liquid cavities. Each first receiving column has a piston portion at one end, which is slidably sleeved with the liquid cavity. The piston portion divides the liquid cavity into a first chamber and a second chamber. The first chamber has inlet and outlet holes, and the second chamber has an air groove communicating with the outside.

[0007] In a preferred embodiment, the first receiving mold includes a cavity seat and a positioning plate, with one side of the cavity seat and the positioning plate fitting together. The positioning plate has through holes at each liquid cavity port, and each through hole has a sliding bushing. Each first receiving post is slidably sleeved with the sliding bushing.

[0008] In a preferred embodiment, the electromagnetic forming assembly is located on the upper side of the workpiece plate. The electromagnetic forming assembly includes a forming assembly base frame and a movable frame. The forming assembly base frame is provided with multiple movable frame guide rods. The movable frame is slidably connected to the movable frame guide rods. The coil plate is located at the lower end of the movable frame, and the upper end of the movable frame is provided with a first counterweight block.

[0009] In a preferred embodiment, the universal adjustment table includes a swing plate and an adjustment table base frame. The swing plate is connected to the base frame of the first receiving mold or forming component. A ball joint seat is provided in the center of the swing plate and the adjustment table base frame. The swing plate and the adjustment table base frame are connected by the ball joint seat. The adjustment table base frame is also provided with multiple threaded adjustment rod devices. One end of each adjustment rod device abuts against the end face of the swing plate near the edge.

[0010] In a preferred embodiment, one end of the adjusting rod device is provided with a limiting screw sleeve, the adjusting rod device is provided with a first sliding cavity, and a first sliding rod is also provided. One end of the first sliding rod is slidably sleeved with the first sliding cavity. The middle part of the first sliding rod is provided with a first stop shoulder, which is used to abut against the bottom end of the limiting screw sleeve. The first sliding rod is also provided with a first extension, which passes through the bottom end of the limiting screw sleeve. The limiting screw sleeve is provided with a first spring, and the two ends of the first spring abut against the adjusting rod device and the first stop shoulder respectively. The cross-sections of the first sliding cavity, the first sliding rod, and the first extension are not circular.

[0011] In the preferred embodiment, a six-axis robot and a second receiving mold are also provided in the center of the annular base. An electromagnetic chuck is provided on the swing plate of the universal adjustment table connected to the first receiving mold. The electromagnetic chuck holds the first receiving mold or the second receiving mold. The six-axis robot is equipped with a fixture and an electric screw gun. The fixture is used to switch between the first receiving mold and the second receiving mold.

[0012] In a preferred embodiment, the second receiving mold has multiple through holes arranged in rows and columns. The through holes have threaded second receiving posts. The end of the second receiving post away from the workpiece plate has a second sliding cavity. The second sliding cavity has a retractable second sliding rod. One end of the second sliding rod has a second extension that extends out of the second receiving mold. The cross-sections of the two ends of the second sliding rod and the second sliding cavity are non-circular. The number of second receiving posts is greater than that of the first receiving posts.

[0013] In a preferred embodiment, a momentum transfer device and a floating platform are also provided. The floating platform includes a second housing, and a second chamber with one open end is provided inside the second housing. The second chamber is filled with liquid, and a second floating block is provided at the open end of the second chamber. The momentum transfer device includes a first housing, and a first chamber with an open upper end is provided inside the first housing. The first chamber is filled with liquid, and a first floating block is provided at the open end of the first chamber. A second counterweight is provided at the upper end of the first floating block. A connecting pipe connects the second chamber and the first chamber. The first receiving mold or the second receiving mold is connected to the second floating block through a universal adjustment platform.

[0014] In the preferred embodiment, a U-shaped frame is provided on one side of the universal adjustment platform, and a guide slide rod is provided in the U-shaped groove of the U-shaped frame. The vertical moving frame is slidably connected with the guide slide rod. A telescopic support leg is provided on one side of the universal adjustment platform to support the universal adjustment platform.

[0015] The beneficial effects of this invention are as follows: A receiving mold is set on the back side of the workpiece. The receiving mold can adjust the shape of its end face. After the electromagnetic coil applies force, the workpiece deforms and is stopped by the receiving mold, effectively controlling the deformation displacement of the workpiece and ensuring the processing accuracy of each step. The receiving mold and the electromagnetic forming assembly can move in the horizontal area and in the vertical direction, and can swing to adapt to the angle of the outer edge surface of the workpiece, thus adapting to different workpieces. The electromagnetic forming assembly adopts a movable frame with a counterweight that can move upward, converting the instantaneous reaction force during forming into momentum, reducing the impact force on the base frame, which is beneficial to the miniaturization of the equipment and cost control. The transient movement of the first floating block is associated with the second floating block through a momentum transfer device using hydraulic pressure, converting the downward impulse into upward momentum, which facilitates the miniaturization of the lower mechanism and cost control. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the planar layout of the present invention.

[0018] Figure 2 This is an elevation layout diagram of the present invention.

[0019] Figure 3 This is a schematic diagram showing the arrangement of the electromagnetic forming components and the receiving mold.

[0020] Figure 4 This is a sectional view of the first receiving mold.

[0021] Figure 5 This is a plan view of the support columns of the support mold.

[0022] Figure 6 This is a schematic diagram of the electromagnetic forming assembly and the universal adjustment table.

[0023] Figure 7 This is a sectional view of the adjusting rod device.

[0024] Figure 8 This is a schematic diagram of the electromagnetic forming principle.

[0025] Figure 9 This is a schematic diagram of the electromagnetic chuck's location.

[0026] Figure 10 This is a top view of the second receiving mold.

[0027] Figure 11 This is a cross-sectional view of the second receiving mold.

[0028] Figure 12 This is a schematic diagram of the inside of the second sliding rod.

[0029] Figure 13 This is a connection diagram of the momentum transfer device.

[0030] Figure 14 This is a schematic diagram of the U-shaped frame at the top.

[0031] In the figure: First receiving mold 1; cavity seat 101; first receiving column 102; piston part 103; liquid cavity 104; positioning plate 105; sliding bushing 106; rear cover 107; liquid inlet / outlet hole 108; air groove 109; electromagnetic forming assembly 2; coil plate 201; movable frame 202; first counterweight block 203; forming assembly base frame 204; movable frame guide rod 205; stop block 206; shock absorber sleeve 207; fixed platform 3; clamping ring 4; universal adjustment platform 5; swing plate 501; adjustment platform base frame 502; ball joint seat 503; adjustment rod device 6; sleeve 601; first sliding cavity 602; first sliding rod 603; first stop shoulder 604; first extension part 605; limiting screw sleeve 606; first spring 6 07; Workpiece plate 7; Annular base 8; Annular moving frame 9; Forward extension frame 10; Vertical moving frame 11; Fixture tooling 12; Electric screw gun 1201; Six-axis robot 13; Second receiving mold 14; Second receiving column 1401; Second sliding rod 1402; Second sliding cavity 1403; Second spring 1404; Second stop shoulder 1405; Second extension 1406; Electromagnetic chuck 15; Telescopic support leg 16; Momentum transfer device 17; First floating block 1701; First box 1702; First chamber 1703; Second counterweight 1704; Floating platform 18; Second floating block 1801; Second box 1802; Second chamber 1803; Connecting pipe 19; U-shaped frame 20; Guide slide rod 2001. Detailed Implementation

[0032] like Figure 1-5 In this invention, a large-scale thin-walled component forming device based on electromagnetic processing is disclosed. The device includes an annular base 8, with annular movable frames 9 at its upper and lower ends. Each annular movable frame 9 has a forward extension frame 10, and a vertically movable frame 11 at its front end. A fixed platform 3 is located in the center of the annular base 8. The device also includes a first receiving mold 1 and an electromagnetic forming assembly 2, which are respectively distributed on both sides of a workpiece plate 7. A universal adjustment platform 5 is provided on the side of the first receiving mold 1 and the electromagnetic forming assembly 2 away from the workpiece plate 7 to allow the angles of the first receiving mold 1 and the electromagnetic forming assembly 2 to swing. The universal adjustment platform 5 is used to connect to the vertical movable frame 11. The electromagnetic forming assembly 2 has a coil plate 201 facing the workpiece plate 7. The first receiving mold 1 includes a cavity seat 101, within which are multiple independently extendable first receiving columns 102 arranged in a horizontal row. The ends of the first receiving columns 102 are used to abut against the workpiece plate 7.

[0033] The annular base 8 is ground-based and can be constructed using reinforced concrete. Mounting plates are pre-embedded on the upper and lower surfaces, and annular guide rails are installed. A slider is installed at the lower end of the annular moving frame 9 and engages with the guide rails. The upper end of the annular moving frame 9 is equipped with a guide sleeve and a guide rod and drive cylinder. A forward extension frame 10 is installed at the front end of the guide rod, and the cylinder drives the forward extension frame 10 to extend and retract along the radius of the annular base 8. The forward extension frame 10 uses a guide rail-screw-motor module, and the motor drives the vertical moving frame 11 to move up and down. Therefore, both the first receiving mold 1 and the electromagnetic forming assembly 2 can complete annular movement and adjust their horizontal position, while also moving up and down.

[0034] A coil is installed inside the coil plate 201. The coil plate 201 is charged through a capacitor. The coil plate 201 generates eddy currents on the workpiece plate 7. The electric field of the eddy currents is opposite to the electric field of the coil, generating a repulsive force.

[0035] The workpiece plate 7 is installed in the central cutout of the annular fixed platform 3, and the outer edge of the workpiece plate 7 is pressed and locked by the clamping ring 4.

[0036] The first receiving mold 1 is used to support the back side of the workpiece plate 7. When the cavity seat 101 is charged and force is applied, all or part of the workpiece plate 7 is depressed by force until the back side contacts the first receiving mold 1 and is stopped by the first receiving mold 1, and finally formed. Since each of the first receiving pillars 102 of the first receiving mold 1 can be adjusted to fit a set curve, the final deformation position of the workpiece plate 7 is determined, and the forming accuracy is controllable and high.

[0037] The angles of the first receiving mold 1 and the electromagnetic forming assembly 2 are adjustable. For large workpieces that cannot be formed in one step, a multi-layer forming process is adopted, starting with the outer ring and then the inner ring. The first receiving mold 1 and the electromagnetic forming assembly 2 are always arranged relative to each other, and the outer ring of the workpiece plate 7 is first formed to a first depth along the ring. Then, the forward extension frame 10 drives the first receiving mold 1 and the electromagnetic forming assembly 2 to move to the inner ring, gradually forming the inner ring. Subsequently, the vertical moving frame 11 drives the first receiving mold 1 and the electromagnetic forming assembly 2 to move down synchronously, forming a second depth in the inner ring, and then forming a third depth in the inner ring, and so on, until the entire process is completed.

[0038] In a preferred embodiment, the cavity seat 101 includes a plurality of arrayed liquid cavities 104. Each first receiving post 102 has a piston part 103 at one end. The piston part 103 is slidably sleeved with the liquid cavity 104. The piston part 103 divides the liquid cavity 104 into a first chamber and a second chamber. The first chamber is provided with an inlet / outlet liquid hole 108, and the second chamber is provided with an air groove 109 communicating with the outside.

[0039] Each liquid chamber 104 has a rear cover 107 at one end. The rear cover 107 is threaded to the liquid chamber 104 and can be sealed with pipe thread and thread sealant. The liquid inlet and outlet hole 108 is located in the center of the rear cover 107 and can be installed with a quick-connect connector.

[0040] The inlet / outlet port 108 is connected to the valve island of the external hydraulic system. The hydraulic system includes a pump, flow control valve, and pressure control valve. The valve island is equipped with multiple solenoid directional valves. The hydraulic system can independently control the total amount of liquid in each first chamber, ensuring that the first receiving column 102 extends or retracts to a specified length. The air groove 109 is connected to the outside to balance the air pressure in the second chamber during the movement of the first receiving column 102.

[0041] In a preferred embodiment, the first receiving mold 1 includes a cavity seat 101 and a positioning plate 105. The cavity seat 101 and the positioning plate 105 are in contact with each other on one side. The positioning plate 105 has a through hole at the port of each liquid cavity 104. A sliding bushing 106 is provided in each through hole. Each first receiving post 102 is slidably sleeved with the sliding bushing 106.

[0042] The first receiving mold 1 adopts a splicing design, which is convenient for processing. The positioning plate 105 mainly plays the role of positioning the first receiving column 102.

[0043] In a preferred embodiment, the electromagnetic forming component 2 is located on the upper side of the workpiece plate 7. The electromagnetic forming component 2 includes a forming component base frame 204 and a movable frame 202. The forming component base frame 204 is provided with a plurality of movable frame guide rods 205. The movable frame 202 is slidably connected to the movable frame guide rods 205. The coil plate 201 is located at the lower end of the movable frame 202. The upper end of the movable frame 202 is provided with a first counterweight block 203.

[0044] The guide rod 205 of the movable frame is provided with a stop block 206 at its end. A shock-absorbing sleeve 207 is fitted on the guide rod 205 of the movable frame. One end of the shock-absorbing sleeve 207 is connected to the stop block 206, and the other end of the shock-absorbing sleeve 207 is used to stop the movable frame 202.

[0045] When the coil plate 201 applies an instantaneous impact force to the workpiece plate 7, it receives a reaction force, causing the movable frame 202 to rise. The reaction force does work against gravity and is eventually consumed. The movable frame 202 falls back and is stopped by the shock-absorbing sleeve 207, which is made of a flexible material such as rubber or silicone.

[0046] By converting the instantaneous impact force into the momentum of the coil plate 201, the movable frame 202 and the first counterweight 203, the force ultimately experienced by the forming component base frame 204 is less than one-tenth of the original force, which greatly reduces the instantaneous impact. Furthermore, the forming component base frame 204 does not require a large structural strength and can be made very small, greatly improving space utilization and saving costs.

[0047] In a preferred embodiment, the universal adjustment table 5 includes a swing plate 501 and an adjustment table base frame 502. The swing plate 501 is connected to the first receiving mold 1 or the forming component base frame 204. A ball joint seat 503 is provided in the center of the swing plate 501 and the adjustment table base frame 502. The swing plate 501 and the adjustment table base frame 502 are connected by the ball joint seat 503. The adjustment table base frame 502 is also provided with a plurality of threaded adjustment rod devices 6. One end of each adjustment rod device 6 abuts against the end face of the swing plate 501 near the edge.

[0048] The rotating adjustment rod device 6 can adjust the extension length of the adjustment rod device 6. An adjustment rod device 6 can be set at each of the four corners of the swing plate 501. The angle of the swing plate 501 can be adjusted by adjusting the extension length of each adjustment rod device 6, thereby adjusting the orientation of the first receiving mold 1 or the coil plate 201.

[0049] In a preferred embodiment, the adjusting rod device 6 has a limiting sleeve 606 at one end, a first sliding cavity 602 inside the adjusting rod device 6, and a first sliding rod 603. One end of the first sliding rod 603 is slidably sleeved with the first sliding cavity 602. A first stop shoulder 604 is provided in the middle of the first sliding rod 603. The first stop shoulder 604 is used to abut against the bottom end of the limiting sleeve 606. The first sliding rod 603 also has a first extension 605, which passes through the bottom end of the limiting sleeve 606. A first spring 607 is provided inside the limiting sleeve 606. The two ends of the first spring 607 abut against the adjusting rod device 6 and the first stop shoulder 604, respectively. The cross-sections of the first sliding cavity 602, the first sliding rod 603, and the first extension 605 are not circular.

[0050] The cross-sections of the first sliding cavity 602, the first sliding rod 603, and the first extension 605 can be regular hexagonal to facilitate torque transmission.

[0051] The other end of the adjusting rod device 6 is also provided with a sleeve 601. The sleeve 601 can be made of a high-strength, wear-resistant material and the sleeve 601 is replaceable.

[0052] The limiting screw sleeve 606 is adjustable to adjust the initial holding force of the first spring 607 and the position of the first extension 605 relative to the adjusting rod device 6. The angle of the swing plate 501 can be adjusted by automatically rotating each adjusting rod device 6 using a six-axis robot with an electric screwdriver.

[0053] In a preferred embodiment, a six-axis robot 13 and a second receiving mold 14 are also provided in the center of the annular base 8. An electromagnetic chuck 15 is provided on the swing plate 501 of the universal adjustment table 5 connected to the first receiving mold 1. The electromagnetic chuck 15 holds the first receiving mold 1 or the second receiving mold 14. The six-axis robot 13 is provided with a fixture 12 and an electric screw gun 1201. The fixture 12 is used to switch between the first receiving mold 1 and the second receiving mold 14.

[0054] The six-axis robot 13 has a connecting plate on its sixth axis. The two ends of the connecting plate are equipped with a fixture 12 and an electric screw gun 1201. When the sixth axis rotates, the fixture 12 and the electric screw gun 1201 can be switched. The fixture 12 can be a finger cylinder, and a clamping plate frame is installed at the finger structure.

[0055] In a preferred embodiment, the second receiving mold 14 has multiple through holes arranged in rows and columns. A threaded second receiving post 1401 is provided within each through hole. A second sliding cavity 1403 is provided at the end of the second receiving post 1401 furthest from the workpiece plate 7. A retractable second sliding rod 1402 is provided within the second sliding cavity 1403. A second extension 1406 is provided at one end of the second sliding rod 1402, extending out of the second receiving mold 14. The cross-sections of both ends of the second sliding rod 1402 and the second sliding cavity 1403 are non-circular. The number of second receiving posts 1401 is greater than the number of first receiving posts 102.

[0056] The through hole is a stepped hole. A second spring 1404 is also provided in the second sliding cavity 1403. The two ends of the second spring 1404 abut against the bottom end of the second sliding cavity 1403 and the second sliding rod 1402 respectively. A second stop shoulder 1405 is provided in the middle of the second sliding rod 1402, which can stop at the step of the through hole to prevent the second sliding rod 1402 from being pushed out by the second sliding cavity 1403.

[0057] The spring gives the second sliding rod 1402 and the first sliding rod 603 a certain degree of flexibility. The six-axis robot 13 drives the electric screw gun 1201 to align with the second sliding rod 1402 or the first sliding rod 603. After the hexagonal structure is aligned, the extension length of each second support post 1401 or adjusting rod device 6 is adjusted one by one.

[0058] The second receiving mold 14 is placed on the hollow table frame in the center of the annular base 8. The structure of the second receiving mold 14 is similar to that of the first receiving mold 1, consisting of a cavity seat and a positioning plate. The difference is that the second receiving column 1401 is threadedly connected to the through hole in the cavity seat, and the second sliding rod 1402 is used to transmit torque and adjust the extension length of the second receiving column 1401.

[0059] During forming, if the depth direction is divided into multiple layers, the first few layers, such as the first depth and the second depth, use the first receiving mold 1 as the back support. The coil charging amount and force are relatively large, and the single forming depth of the workpiece plate 7 is relatively deep. During each forming, the external hydraulic system adjusts the extension length of each first receiving column 102 of the first receiving mold 1 to fit the processing surface. At this time, the electric screw gun 1201 approaches the second receiving mold 14 and adjusts the extension length of each second receiving column 1401 so that the upper end fits the final shape surface. When forming the last layer of depth, the electromagnetic chuck 15 is de-energized, and the six-axis robot 13 drives the fixture 12 to approach the first receiving mold 1. The fixture 12 clamps the first receiving mold 1 and places it next to the second receiving mold 14. Then, it clamps the second receiving mold 14 and places it on the electromagnetic chuck 15. The electromagnetic chuck 15 clamps the second receiving mold 14 to complete the mold switching.

[0060] The second receiving post 1401 is thinner and more numerous than the first receiving post 102, and the arrangement is denser. Therefore, the surface accuracy of the fitted is higher. In order to ensure the forming accuracy, the last layer is formed with a smaller stroke. Therefore, the coil requires less energy and the applied force is smaller, so as to avoid causing a large load on the thinner second receiving post 1401.

[0061] In a preferred embodiment, a momentum transfer device 17 and a floating platform 18 are also provided. The floating platform 18 includes a second box 1802, and a second chamber 1803 with one end open is provided inside the second box 1802. The second chamber 1803 is filled with liquid, and a second floating block 1801 is provided at the open end of the second chamber 1803. The momentum transfer device 17 includes a first box 1702, and a first chamber 1703 with the upper end open is provided inside the first box 1702. The first chamber 1703 is filled with liquid, and a first floating block 1701 is provided at the open end of the first chamber 1703. A second counterweight 1704 is provided at the upper end of the first floating block 1701. A connecting pipe 19 connects the second chamber 1803 and the first chamber 1703. The first receiving mold 1 or the second receiving mold 14 is connected to the second floating block 1801 through a universal adjustment table 5.

[0062] Since the coil plate 201 faces downwards, the first receiving mold 1 and the second receiving mold 14 must support upwards. The second chamber 1803 and the first chamber 1703 are connected by multiple connecting pipes 19. During the forming impact, the second floating block 1801 instantly moves downwards and squeezes the liquid in the second chamber 1803. The liquid moves into the first chamber 1703 through the connecting pipes 19 and squeezes the first floating block 1701 upwards, converting the huge instantaneous impact force into the momentum of the first floating block 1701 and the second counterweight 1704, reducing the reaction force borne by the receiving column and the base frame system, and preventing them from being damaged.

[0063] Since the coil applies force to the workpiece plate 7, the second floating block 1801 is only squeezed when the workpiece plate 7 is formed in place. At this point, the forming is already complete. Therefore, even if the second floating block 1801 sinks, it will not have a significant impact on the final deformation of the workpiece plate 7. Furthermore, since the stroke is extremely short and the forming force is small during the last forming process, the switch of the connecting pipe 19 may not be opened or may be opened only slightly. The second floating block 1801 is locked or sinks only slightly, ensuring the final accuracy of the workpiece plate 7 within the tolerance of the second receiving mold 14.

[0064] In the preferred embodiment, a U-shaped frame 20 is provided on one side of the universal adjustment platform 5. A guide slide rod 2001 is provided in the U-shaped groove of the U-shaped frame 20. The vertical moving frame 11 is slidably connected to the guide slide rod 2001. A telescopic support leg 16 is provided on one side of the universal adjustment platform 5. The telescopic support leg 16 is used to support the universal adjustment platform 5.

[0065] The telescopic outrigger 16 can be equipped with a telescopic hydraulic cylinder.

[0066] For the U-shaped frame 20 used to place the universal adjustment table 5 for the first receiving mold 1 or the second receiving mold 14, initially, the vertical moving frame 11 is attached to the upper end of the inner wall of the U-shaped groove, lifting the universal adjustment table 5. During the forming process, the telescopic support leg 16 extends and stands on the ground, lifting the universal adjustment table 5 along with the first receiving mold 1 or the second receiving mold 14 to a certain height, so that the horizontal plate of the vertical moving frame 11 is in the center of the U-shaped groove of the U-shaped frame 20.

[0067] For the U-shaped frame 20 used to connect the universal adjustment table 5 of the electromagnetic forming component 2, initially, the vertical moving frame 11 is in the middle of the U-shaped groove, and a disc spring assembly is sleeved on the guide slide rod 2001. The upper and lower parts of the horizontal plate of the vertical moving frame 11 are supported by the disc spring assembly, forming a buffer.

[0068] The U-shaped frame 20, together with the telescopic support leg 16, forms a buffer assembly to prevent the vertical moving frame 11, the forward extension frame 10, and the ring moving frame 9 from being subjected to the impact force during forming, thus avoiding damage.

[0069] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A large-scale thin-walled component forming device based on electromagnetic processing, characterized in that: The system includes an annular base (8), with annular movable frames (9) at its upper and lower ends, and a forward extension frame (10) on each annular movable frame (9). A vertically sliding vertical movable frame (11) is located at the front end of each forward extension frame (10). A fixed platform (3) is located in the center of the annular base (8). The system also includes a first receiving mold (1) and an electromagnetic forming assembly (2). The first receiving mold (1) and the electromagnetic forming assembly (2) are respectively connected to each vertical movable frame (11). The first receiving mold (1) and the electromagnetic forming assembly (2) are respectively distributed on both sides of the workpiece plate (7). The forming assembly (2) is provided with a universal adjustment table (5) on the side away from the workpiece plate (7) so that the angle of the first receiving mold (1) and the electromagnetic forming assembly (2) can swing. The universal adjustment table (5) is used to connect with the vertical moving frame (11). The electromagnetic forming assembly (2) is provided with a coil plate (201) facing the workpiece plate (7). The first receiving mold (1) includes a cavity seat (101). The cavity seat (101) is provided with a plurality of independently telescopic first receiving columns (102). The plurality of first receiving columns (102) are arranged in a horizontal row. The ends of the first receiving columns (102) are used to abut against the workpiece plate (7).

2. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 1, characterized in that: The cavity seat (101) includes multiple arrayed liquid cavities (104). Each first receiving column (102) has a piston part (103) at one end. The piston part (103) is slidably sleeved with the liquid cavity (104). The piston part (103) divides the liquid cavity (104) into a first chamber and a second chamber. The first chamber is provided with an inlet / outlet hole (108), and the second chamber is provided with an air groove (109) communicating with the outside.

3. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 2, characterized in that: The first receiving mold (1) includes a cavity seat (101) and a positioning plate (105). The cavity seat (101) and the positioning plate (105) are in contact with each other on one side. The positioning plate (105) has through holes at the ports of each liquid cavity (104). Each through hole has a sliding bushing (106). Each first receiving column (102) is slidably sleeved with the sliding bushing (106).

4. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 1, characterized in that: The electromagnetic forming assembly (2) is located on the upper side of the workpiece plate (7). The electromagnetic forming assembly (2) includes a forming assembly base frame (204) and a movable frame (202). The forming assembly base frame (204) is provided with multiple movable frame guide rods (205). The movable frame (202) is slidably connected to the movable frame guide rods (205). The coil plate (201) is located at the lower end of the movable frame (202). The upper end of the movable frame (202) is provided with a first counterweight block (203).

5. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 4, characterized in that: The universal adjustment table (5) includes a swing plate (501) and an adjustment table base frame (502). The swing plate (501) is connected to the first receiving mold (1) or the forming component base frame (204). A ball joint seat (503) is provided in the center of the swing plate (501) and the adjustment table base frame (502). The swing plate (501) and the adjustment table base frame (502) are connected by the ball joint seat (503). The adjustment table base frame (502) is also provided with multiple threaded adjustment rod devices (6). One end of each adjustment rod device (6) abuts against the end face of the swing plate (501) near the edge.

6. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 5, characterized in that: One end of the adjusting rod device (6) is provided with a limiting screw sleeve (606). The adjusting rod device (6) is provided with a first sliding cavity (602) and a first sliding rod (603). One end of the first sliding rod (603) is slidably sleeved with the first sliding cavity (602). The middle part of the first sliding rod (603) is provided with a first stop shoulder (604). The first stop shoulder (604) is used to abut against the bottom end of the limiting screw sleeve (606). The first sliding rod (603) is also provided with a first extension (605). The first extension (605) passes through the bottom end of the limiting screw sleeve (606). The limiting screw sleeve (606) is provided with a first spring (607). The two ends of the first spring (607) abut against the adjusting rod device (6) and the first stop shoulder (604) respectively. The cross-sections of the first sliding cavity (602), the first sliding rod (603) and the first extension (605) are not circular.

7. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 6, characterized in that: The annular base (8) is also equipped with a six-axis robot (13) and a second receiving mold (14) in the center. The swing plate (501) of the universal adjustment table (5) connected to the first receiving mold (1) is equipped with an electromagnetic chuck (15). The electromagnetic chuck (15) holds the first receiving mold (1) or the second receiving mold (14). The six-axis robot (13) is equipped with a fixture (12) and an electric screw gun (1201). The fixture (12) is used to switch between the first receiving mold (1) and the second receiving mold (14).

8. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 7, characterized in that: The second receiving mold (14) has multiple through holes arranged in rows and columns. The through holes are provided with threaded second receiving columns (1401). The end of the second receiving column (1401) away from the workpiece plate (7) is provided with a second sliding cavity (1403). The second sliding cavity (1403) is provided with a telescopic second sliding rod (1402). One end of the second sliding rod (1402) is provided with a second extension (1406). The second extension (1406) extends out of the second receiving mold (14). The cross-sections of the two ends of the second sliding rod (1402) and the second sliding cavity (1403) are non-circular. The number of second receiving columns (1401) is more than that of the first receiving columns (102).

9. The large-scale thin-walled component forming device based on electromagnetic processing according to claim 8, characterized in that: It also includes a momentum transfer device (17) and a floating platform (18). The floating platform (18) includes a second housing (1802), and a second chamber (1803) with one end open is provided inside the second housing (1802). The second chamber (1803) is filled with liquid, and a second floating block (1801) is provided at the opening end of the second chamber (1803). The momentum transfer device (17) includes a first housing (1702), and a first floating block (1801) with an opening at the top is provided inside the first housing (1702). The first chamber (1703) is filled with liquid. The opening end of the first chamber (1703) is provided with a first floating block (1701). The upper end of the first floating block (1701) is provided with a second counterweight (1704). The second chamber (1803) and the first chamber (1703) are connected by a connecting pipe (19). The first receiving mold (1) or the second receiving mold (14) is connected to the second floating block (1801) through a universal adjustment table (5).

10. The large-scale thin-walled component forming apparatus based on electromagnetic processing according to claim 9, characterized in that: A U-shaped frame (20) is also provided on one side of the universal adjustment platform (5). A guide slide rod (2001) is provided in the U-shaped groove of the U-shaped frame (20). The vertical moving frame (11) is slidably connected with the guide slide rod (2001). A telescopic support leg (16) is provided on one side of the universal adjustment platform (5). The telescopic support leg (16) is used to support the universal adjustment platform (5).

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