Electron beam welding equipment and process

Abstract

The invention belongs to the technical field of welding, and particularly relates to electron beam welding equipment and a process, the electron beam welding equipment comprises a workbench, a welding chamber is fixedly mounted above the workbench, an electron gun is arranged in the welding chamber, two moving frames are arranged in the welding chamber, and the two moving frames are equivalent to the welding chamber and are symmetrically designed; the side wall of each movable frame is provided with a fastening frame, clamping plates arranged in a circumferential array are arranged in the fastening frames, and a clamping mechanism is arranged in the fastening frames and used for driving the clamping plates arranged in the circumferential array to move and clamping a to-be-welded part. Electrons are emitted through a cathode in an electron gun, the electrons are accelerated under the action of a high-voltage electrostatic field and form electron beams with extremely high energy density through focusing of an electromagnetic field, and when the electron beams impact a workpiece, huge kinetic energy of the electron beams is converted into heat energy, so that a to-be-welded part at the welding position is molten, a molten pool is formed, and welding is achieved.

Description

Technical Field

[0001] This invention belongs to the field of welding technology, specifically an electron beam welding device and process. Background Technology

[0002] Electron beam welding involves emitting electrons from the cathode in an electron gun. These electrons are accelerated under the influence of a high-voltage electrostatic field and focused by an electromagnetic field to form an electron beam with extremely high energy density. When the electron beam strikes the workpiece, its enormous kinetic energy is converted into heat energy, causing the workpiece to melt at the welding point and forming a molten pool, thus achieving welding.

[0003] Existing technologies have also proposed some solutions. For example, a Chinese patent with publication number CN219632811U discloses a vacuum electron beam welding device, which includes: a welding positioning assembly, which includes: a base, a fixing member, and at least two clamping members. The fixing member is fixedly installed on the base. The two clamping members are symmetrically arranged between the base and the fixing member, and a clamping space is formed between the two clamping members. The clamping space is used to clamp the thin-walled shell assembly to be welded; and a welding electron gun, which is movably arranged beside the welding positioning assembly. This makes the vacuum electron beam weld on the thin-walled shell assembly well formed, with small weld deformation and appropriate penetration depth, thereby improving the welding efficiency and effect of the welding device.

[0004] While the above technical solutions address the issue of achieving good vacuum electron beam weld formation on thin-walled shell assemblies, other problems remain in practical application. For instance, existing electron beam welding fixtures are mostly specialized tooling designed for specific workpieces, lacking versatility. When the size or shape of the object being welded changes, the fixture needs to be replaced or readjusted, a cumbersome process with long adjustment cycles, severely impacting equipment utilization.

[0005] Therefore, the present invention provides an electron beam welding device and process. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The electron beam welding equipment of the present invention includes a worktable, a welding chamber fixedly installed above the worktable, an electron gun disposed inside the welding chamber, and two movable frames disposed inside the welding chamber, which are equivalent to the welding chamber being symmetrically designed. Each movable frame has a fastening frame disposed on its side wall, and the fastening frame has a clamping plate arranged in a circular array inside. The fastening frame has a clamping mechanism disposed inside, which is used to drive the clamping plate arranged in a circular array to move and clamp the workpiece to be welded.

[0008] Preferably, the fastening frame is annular in shape, and the clamping mechanism includes a drive ring. The inner wall of the drive ring is equipped with arc-shaped protrusions arranged in a circumferential array. Multiple through frames are fixedly installed inside the fastening frame. Each through frame has a sliding rod slidably disposed inside. The end of each sliding rod is connected to the side wall of the clamping plate. During the rotation of the fastening frame side wall, the drive ring drives the arc-shaped protrusions to rotate. The raised surface of the arc-shaped protrusions contacts the end of the sliding rod and drives the sliding rod to move inside the through frame.

[0009] Preferably, the slide rod is convex-rounded on the side near the arc-shaped protrusion, a limiting vertical groove is provided inside the through frame, and a limiting vertical rod is installed on the outer wall of the slide rod. The limiting vertical rod is slidably disposed inside the limiting vertical groove. During operation, since the slide rod is convex-rounded near the arc-shaped protrusion, it can better cooperate with the arc-shaped protrusion, allowing the arc-shaped protrusion to compress the end of the slide rod, i.e., the slide rod can move. The design of the limiting vertical rod and the limiting vertical groove ensures that the slide rod moves on the axis, which is beneficial for clamping parts of different shapes and sizes to be welded.

[0010] Preferably, a compression spring is fitted on the bottom outer circumference of the slide rod. One end of the compression spring is connected to the bottom wall of the through frame, and the other end is connected to the surface of the clamping plate. The clamping plate is made of rubber and has an arc shape with friction protrusions on its inner wall. During operation, when the slide rod moves the clamping plate closer to the workpiece to be welded, the slide rod will cause the compression spring at its bottom to deform. Moreover, the clamping plate in contact with the workpiece to be welded is designed to be made of rubber, which can grip the workpiece to be welded in four directions, provide uniform clamping force, and have a certain buffering effect to prevent workpiece deformation caused by excessive clamping or thermal stress.

[0011] Preferably, each of the movable frames is provided with an L-shaped bracket on its side wall. Two reciprocating screws are rotatably mounted inside the welding chamber, with the ends of both screws connected to an output end of a motor. A mating seat is provided on the outer circumferential surface of each reciprocating screw. When the reciprocating screws rotate, they can drive the mating seat to move. One side wall of the L-shaped bracket contacts the side wall of the mating seat, and the other side wall of the L-shaped bracket is connected to the side wall of the fastening frame. During operation, when the workpiece to be welded is placed inside the welding chamber, if a camera designed inside the welding chamber observes that the end of the workpiece is not... When in contact with the clamping plate, the motor can be controlled to drive the reciprocating screw to rotate, causing the reciprocating screw to move the mating seat on its surface. That is, the mating seat can drive the L-shaped bracket and the fastening frame to move, causing the fastening frame to move closer to the end of the workpiece to be welded. After the end of the workpiece to be welded is fixed by the above mechanism, the reciprocating screw can be controlled to rotate, so that the mating seats on the surfaces of the two reciprocating screws move closer to each other, that is, the two workpieces to be welded can be joined together. This facilitates the melting of the contact position of the workpieces to be welded by the electron beam, forming a molten pool, thereby realizing the welding function.

[0012] Preferably, the side wall of the docking seat has a rectangular groove, and an electric telescopic rod is fixedly installed inside the rectangular groove. The telescopic end of the electric telescopic rod is connected to the side wall of the L-shaped bracket. The inner wall of the welding chamber has a vertical groove, and the movable seat is slidably disposed in the vertical groove. During operation, when adjusting the position of the fastening frame, the telescopic end of the electric telescopic rod can be further moved by controlling the telescopic end to drive the L-shaped bracket and the fastening frame to move. This allows for further adjustment of the position of the fastening frame, making it easier for the fastening frame to better contact the end of the workpiece to be welded. Moreover, after the workpiece is fixed, if the welding position of the workpiece is not aligned, the vertical position of the two fastening frames can be adjusted, so that the workpiece can achieve a better welding effect when in contact, facilitating quick clamping of the workpiece to be welded.

[0013] Preferably, a limiting ring frame is fixedly installed on the side wall of the L-shaped bracket, a limiting ring groove is formed inside the limiting ring frame, the fastening frame is rotatably disposed inside the limiting ring groove, and an annular wheel adapted to the limiting ring groove is provided on the outer peripheral surface of the fastening frame.

[0014] Preferably, the welding chamber is equipped with a central shaft that rotates internally. Two gears are fixedly mounted on the outer circumference of the central shaft, and gear rings are fixedly mounted on the outer circumference of each of the two fastening frames. The gears and gear rings are meshed together. The end of the central shaft is connected to the output end of the second motor. During operation, the output end of the second motor can be controlled to rotate, causing it to drive the central shaft to rotate. The central shaft drives the two gears to rotate, which in turn drives the gear rings that mesh with them to rotate. The gear rings then drive the fastening frames to rotate within the limiting ring groove. This design, with the two fastening frames rotating synchronously, and after the welded parts are fixed and joined, allows for convenient electron beam welding of different welding surfaces of the welded parts, improving welding efficiency.

[0015] Preferably, the welding chamber is equipped with a camera and lighting.

[0016] Preferably, an electron beam welding process, applicable to the electron beam welding equipment described above, includes the following steps: S1. Feed the workpiece to be welded from the feeder on the worktable into the welding chamber. During the feeding process, ensure that the end of the workpiece is close to the clamping plate and that the workpiece is inside the welding chamber. S2. By controlling the clamping mechanism inside the fastening frame, the clamping mechanism drives the clamping plates arranged in a circular array to move. The clamping plates at different positions will move closer to the part to be welded, and then the clamping plates at different positions can fix the part to be welded. S3. Then, the welding chamber is evacuated and electrons are emitted through the cathode in the electron gun. These electrons are accelerated under the action of a high-voltage electrostatic field and focused by an electromagnetic field to form an electron beam with extremely high energy density. When the electron beam hits the workpiece, its huge kinetic energy is converted into heat energy, which melts the workpiece to be welded at the welding point and forms a molten pool, thereby achieving welding.

[0017] The beneficial effects of this invention are as follows: 1. The electron beam welding equipment and process of the present invention can drive the L-shaped bracket and the fastening frame to move through the docking seat, so that the fastening frame moves closer to the end of the workpiece to be welded. After the end of the workpiece to be welded is fixed by the above mechanism, the reciprocating screw can be controlled to rotate, so that the docking seats on the surfaces of the two reciprocating screws move closer to each other, that is, the two workpieces to be welded can be docked together. This facilitates the melting of the contact position of the workpieces to be welded by the electron beam to form a molten pool, thereby realizing the welding function.

[0018] 2. The electron beam welding equipment and process described in this invention allows for the control of the output end of motor two to rotate during the welding process. This output end drives the central shaft to rotate, which in turn drives two gears to rotate. The two gears then drive the meshing gear ring to rotate, which in turn drives the fastening frame to rotate inside the limiting ring groove. This design, with the two fastening frames rotating synchronously, and after the welded parts are fixed and joined, facilitates the electron beam welding of different welding surfaces of the welded parts, thus improving welding efficiency. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the welding chamber in this invention; Figure 3 This is a schematic diagram of the fastening frame structure in this invention; Figure 4 This is a schematic diagram of the driving ring structure in this invention; Figure 5 This is a schematic diagram of the arc-shaped protrusion structure in this invention; Figure 6 This is a schematic diagram of the limiting ring frame structure in this invention; Figure 7 This is a schematic diagram of the slide bar structure in this invention; Figure 8 This is a schematic diagram of the docking seat structure in this invention; Figure 9 This is a schematic diagram of the reciprocating screw structure in this invention; Figure 10 This is a schematic diagram of the process flow in this invention.

[0021] In the diagram: 1. Workbench; 2. Welding chamber; 3. Electron gun; 201. Moving frame; 4. Fastening frame; 5. Clamping plate; 6. Drive ring; 601. Arc-shaped protrusion; 7. Through frame; 701. Slide rod; 702. Limiting vertical rod; 8. Compression spring; 9. L-shaped bracket; 10. Reciprocating screw; 11. Connecting seat; 12. Rectangular groove; 13. Electric telescopic rod; 14. Limiting ring frame; 15. Limiting ring groove; 16. Central shaft; 17. Gear; 18. Gear ring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 9As shown in the embodiment of the present invention, an electron beam welding device and process includes a workbench 1, a welding chamber 2 fixedly installed above the workbench 1, an electron gun 3 disposed inside the welding chamber 2, and two movable frames 201 disposed inside the welding chamber 2, which are equivalent to a symmetrical design of the welding chamber 2. Each movable frame 201 has a fastening frame 4 disposed on its side wall, and the fastening frame 4 has a clamping plate 5 arranged in a circular array inside the fastening frame 4. The fastening frame 4 has a clamping mechanism disposed inside the fastening frame 4, which is used to drive the clamping plate 5 arranged in a circular array to move and clamp the workpiece to be welded. During operation, the workpiece to be welded is fed into the welding chamber 2 from the feeding port of the worktable 1. During the feeding process, the end of the workpiece to be welded is brought close to the clamping plate 5. When the workpiece to be welded is inside the welding chamber 2, the clamping mechanism inside the fastening frame 4 is controlled to move the clamping plates 5 arranged in a circular array. The clamping plates 5 at different positions will move towards the side closer to the workpiece to be welded. Then, the clamping plates 5 at different positions can fix the workpiece to be welded. Then, the welding chamber 2 is evacuated and electrons are emitted through the cathode in the electron gun 3. These electrons are accelerated under the action of the high voltage electrostatic field and focused by the electromagnetic field to form an electron beam with extremely high energy density. When the electron beam hits the workpiece, its huge kinetic energy is converted into heat energy, which melts the workpiece to be welded at the welding point and forms a molten pool, thereby realizing welding. The design of the circumferential array clamping plate 5 allows for the clamping of workpieces of different shapes and sizes, making operation relatively convenient.

[0024] The fastening frame 4 is circular in shape. The clamping mechanism includes a drive ring 6. The inner wall of the drive ring 6 is equipped with arc-shaped protrusions 601 arranged in a circumferential array. Multiple through frames 7 are fixedly installed inside the fastening frame 4. Each through frame 7 has a sliding rod 701 slidably arranged inside. The end of each sliding rod 701 is connected to the side wall of the clamping plate 5. When the drive ring 6 rotates on the side wall of the fastening frame 4, the drive ring 6 will drive the arc-shaped protrusions 601 to rotate. The protruding surface of the arc-shaped protrusions 601 will contact the end of the sliding rod 701 and drive the sliding rod 701 to move inside the through frame 7. During operation, when the fastening bracket 4 is adjusted to the end of one of the parts to be welded, the arc-shaped protrusion of the arc-shaped protrusion 601 is not in contact with the end of the slide rod 701; this is the initial state. Subsequently, the drive ring 6 is controlled by an external controller to rotate on the side wall of the fastening bracket 4, causing the drive ring 6 to move the arc-shaped protrusion 601 on its inner wall. (Refer to the attached diagram.) Figure 5As shown, during the rotation of the arc-shaped protrusion 601, its arc-shaped protrusion surface gradually contacts the end of the slide rod 701, and the arc-shaped protrusion surface gradually squeezes the end of the slide rod 701, causing the slide rod 701 to drive the clamping plate 5 to move closer to the end of the workpiece to be welded. Since each arc-shaped protrusion 601 and each slide rod 701 are designed in a one-to-one correspondence, the arc-shaped protrusion 601 at different positions will compress the slide rod 701 at different positions, that is, the clamping plate 5 at different positions will move closer to the workpiece to be welded. In this way, it can clamp workpieces of different shapes and sizes, which is beneficial for subsequent electron beam welding, and the operation is more convenient and has a wide range of applications.

[0025] The slide rod 701 has a rounded convex shape on the side near the arc-shaped protrusion 601. A limiting vertical groove is opened inside the through frame 7. A limiting vertical rod 702 is installed on the outer wall of the slide rod 701. The limiting vertical rod 702 is slidably disposed inside the limiting vertical groove. During operation, since the slide rod 701 has a rounded convex shape near the arc-shaped protrusion 601, it can better cooperate with the arc-shaped protrusion 601 and allow the arc-shaped protrusion 601 to compress the end of the slide rod 701, that is, the slide rod 701 can move. The design of the limiting vertical rod 702 and the limiting vertical groove can ensure that the slide rod 701 moves on the axis, which is beneficial for clamping parts of different shapes and sizes to be welded.

[0026] A compression spring 8 is fitted on the bottom outer circumference of the slide rod 701. One end of the compression spring 8 is connected to the bottom wall of the through frame 7, and the other end is connected to the surface of the clamping plate 5. The clamping plate 5 is made of rubber and has an arc shape with friction protrusions on its inner wall. During operation, when the slide rod 701 moves the clamping plate 5 closer to the workpiece to be welded, the slide rod 701 will cause the compression spring 8 at its bottom to deform. Moreover, the clamping plate 5, which is in contact with the workpiece to be welded, is designed to be made of rubber, which can grip the workpiece to be welded in four directions, provide uniform clamping force, and have a certain buffering effect to prevent workpiece deformation caused by excessive clamping or thermal stress.

[0027] Each of the movable frames 201 is provided with an L-shaped bracket 9 on its side wall. The welding chamber 2 is rotatably provided with two reciprocating screws 10. The ends of the two reciprocating screws 10 are connected to the output end of a motor. The outer circumferential surface of the reciprocating screws 10 is provided with a docking seat 11. When the reciprocating screws 10 rotate, they can drive the docking seat 11 to move. One side wall of the L-shaped bracket 9 contacts the side wall of the docking seat 11, and the other side wall of the L-shaped bracket 9 is connected to the side wall of the fastening frame 4. During operation, when the workpiece to be welded is placed inside the welding chamber 2, if the camera inside the welding chamber 2 observes that the end of the workpiece is not in contact with the clamping plate 5, the motor can be controlled to drive the reciprocating screw 10 to rotate, causing the reciprocating screw 10 to move the mating seat 11 on its surface. That is, the mating seat 11 can drive the L-shaped bracket 9 and the fastening frame 4 to move, causing the fastening frame 4 to move closer to the end of the workpiece to be welded. After the end of the workpiece to be welded is fixed by the above mechanism, the reciprocating screw 10 can be controlled to rotate, so that the mating seats 11 on the surfaces of the two reciprocating screws 10 move closer to each other, that is, the two workpieces to be welded can be mated together. This facilitates the melting of the contact position of the workpieces to be welded by the electron beam, forming a molten pool, thereby realizing the welding function.

[0028] The side wall of the docking seat 11 is provided with a rectangular groove 12, and an electric telescopic rod 13 is fixedly installed inside the rectangular groove 12. The telescopic end of the electric telescopic rod 13 is connected to the side wall of the L-shaped bracket 9. The inner wall of the welding chamber 2 is provided with a vertical groove, and the movable seat 2 is slidably disposed in the vertical groove. During operation, when adjusting the position of the fastening bracket 4, the telescopic end of the electric telescopic rod 13 can be moved further to drive the L-shaped bracket 9 and the fastening bracket 4 to move. This allows for further adjustment of the position of the fastening bracket 4, making it easier for the fastening bracket 4 to better contact the end of the workpiece to be welded. Moreover, if the welding position of the workpiece is not aligned after it has been fixed, the vertical position of the two fastening brackets 4 can be adjusted to achieve a better welding effect when the workpiece contacts, facilitating quick clamping of the workpiece to be welded.

[0029] A limiting ring frame 14 is fixedly installed on the side wall of the L-shaped bracket 9. A limiting ring groove 15 is formed inside the limiting ring frame 14. The fastening frame 4 is rotatably disposed inside the limiting ring groove 15, and an annular wheel adapted to the limiting ring groove 15 is provided on the outer circumferential surface of the fastening frame 4. A central shaft 16 is rotatably disposed inside the welding chamber 2. Two gears 17 are fixedly installed on the outer circumferential surface of the central shaft 16. Gear rings 18 are fixedly installed on the outer circumferential surfaces of both fastening frames 4. The gears 17 and gear rings 18 mesh with each other. The end of the central shaft 16 is connected to the motor. The output end is connected; during operation, the output end of motor 2 can be controlled to rotate during the welding process, so that its output end drives the central shaft 16 to rotate. The central shaft 16 drives the two gears 17 to rotate, and the two gears 17 can drive the gear ring 18 that meshes with them to rotate. The gear ring 18 will drive the fastening frame 4 to rotate inside the limiting ring groove 15. With the two fastening frames 4 rotating synchronously, and after the welded parts are fixed and connected, the electron beam can be conveniently used to weld different welding surfaces of the welded parts, which improves the welding efficiency; the welding chamber 2 is equipped with a camera and a lighting lamp.

[0030] like Figure 10 As shown, an electron beam welding process, applicable to the electron beam welding equipment described above, includes the following steps: S1. The workpiece to be welded is fed from the feeding point of the workbench 1 into the welding chamber 2. During the feeding process, the end of the workpiece to be welded is brought close to the clamping plate 5 and the workpiece to be welded is inside the welding chamber 2. S2. By controlling the clamping mechanism inside the fastening frame 4, the clamping mechanism drives the clamping plates 5 arranged in a circular array to move. The clamping plates 5 at different positions will move closer to the side of the workpiece to be welded, and then the clamping plates 5 at different positions can fix the workpiece to be welded. S3. Then, the welding chamber 2 is evacuated and electrons are emitted through the cathode in the electron gun 3. These electrons are accelerated under the action of the high voltage electrostatic field and focused by the electromagnetic field to form an electron beam with extremely high energy density. When the electron beam hits the workpiece, its huge kinetic energy is converted into heat energy, which melts the workpiece to be welded at the welding point and forms a molten pool, thereby realizing welding.

[0031] During operation, the workpiece to be welded is fed into the welding chamber 2 from the feeding port of the worktable 1. During the feeding process, the end of the workpiece to be welded is brought close to the clamping plate 5. When the workpiece to be welded is inside the welding chamber 2, the clamping mechanism inside the fastening frame 4 is controlled to move the clamping plates 5 arranged in a circular array. The clamping plates 5 at different positions will move towards the side closer to the workpiece to be welded. Then, the clamping plates 5 at different positions can fix the workpiece to be welded. Then, the welding chamber 2 is evacuated and electrons are emitted through the cathode in the electron gun 3. These electrons are accelerated under the action of the high voltage electrostatic field and focused by the electromagnetic field to form an electron beam with extremely high energy density. When the electron beam hits the workpiece, its huge kinetic energy is converted into heat energy, which melts the workpiece to be welded at the welding point and forms a molten pool, thereby realizing welding. When the fastening bracket 4 is adjusted to the end of one of the parts to be welded, the arc-shaped protrusion of the arc-shaped protrusion 601 is not in contact with the end of the slide rod 701; this is the initial state. Subsequently, the drive ring 6 is controlled by an external controller to rotate on the side wall of the fastening bracket 4, causing the drive ring 6 to move the arc-shaped protrusion 601 on its inner wall. (Refer to the attached diagram.) Figure 5 As shown, during the rotation of the arc-shaped protrusion 601, its arc-shaped protrusion surface will gradually contact the end of the slide rod 701, and the arc-shaped protrusion surface will gradually squeeze the end of the slide rod 701, causing the slide rod 701 to drive the clamping plate 5 to move closer to the end of the workpiece to be welded. Since each arc-shaped protrusion 601 and each slide rod 701 are designed in a one-to-one correspondence, the arc-shaped protrusion 601 at different positions will compress the slide rod 701 at different positions, that is, the clamping plate 5 at different positions will move closer to the workpiece to be welded. In this way, it can clamp workpieces of different shapes and sizes, which is beneficial for subsequent electron beam welding, and the operation is more convenient and has a wide range of applications. When the slide bar 701 moves the clamping plate 5 closer to the workpiece to be welded, the slide bar 701 will cause the compression spring 8 at its bottom to deform. The clamping plate 5, which is in contact with the workpiece, is designed to be made of rubber, allowing it to grip the workpiece in four directions, providing uniform clamping force and a certain degree of cushioning to prevent workpiece deformation due to excessive clamping or thermal stress. When the workpiece to be welded is placed inside the welding chamber 2, if the camera inside the welding chamber 2 observes that the end of the workpiece is not in contact with the clamping plate 5, the motor can be controlled to drive the reciprocating screw 10 to rotate. This causes the reciprocating screw 10 to move the mating seat 11 on its surface. The mating seat 11 then moves the L-shaped bracket 9 and the fastening frame 4, causing the fastening frame 4 to move closer to the end of the workpiece to be welded. Then, the above mechanism is used to clamp the end of the workpiece to be welded. After the parts are fixed, the reciprocating screw 10 can be rotated to bring the mating seats 11 on the surfaces of the two reciprocating screws 10 closer together, so that the two parts to be welded can be mated together. This facilitates the melting of the contact position of the parts to be welded by the electron beam, forming a molten pool, thereby realizing the welding function. When adjusting the position of the fastening frame 4, the telescopic end of the electric telescopic rod 13 can be moved further to drive the L-shaped bracket 9 and the fastening frame 4 to move. This can further adjust the position of the fastening frame 4, so that the fastening frame 4 can better contact the end of the part to be welded. Moreover, if the welding position of the part is not aligned after the parts are fixed, the vertical position of the two fastening frames 4 can be adjusted so that the parts can achieve a better welding effect when they come into contact, and it is convenient to quickly clamp the parts to be welded. During the welding process, the output end of motor 2 can be controlled to rotate, which in turn drives the central shaft 16 to rotate. The central shaft 16 drives the two gears 17 to rotate, and the two gears 17 can drive the gear ring 18 that meshes with them to rotate. The gear ring 18 will drive the fastening frame 4 to rotate inside the limiting ring groove 15. With the two fastening frames 4 rotating synchronously, and after the welded parts are fixed and connected, the electron beam can be conveniently used to weld different welding surfaces of the welded parts, thus improving the welding efficiency.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electron beam welding device, characterized in that: The device includes a workbench, on which a welding chamber is fixedly installed. An electron gun is installed inside the welding chamber. Two movable frames are installed inside the welding chamber, which is equivalent to a symmetrical design of the welding chamber. Each movable frame has a fastening frame on its side wall. The fastening frame has a clamping plate arranged in a circular array inside. The fastening frame also has a clamping mechanism inside, which is used to move the clamping plate arranged in a circular array and clamp the workpiece to be welded.

2. The electron beam welding equipment according to claim 1, characterized in that: The fastening frame is circular in shape. The clamping mechanism includes a drive ring. The inner wall of the drive ring is equipped with arc-shaped protrusions arranged in a circumferential array. Multiple through frames are fixedly installed inside the fastening frame. Each through frame has a sliding rod slidably arranged inside. The end of each sliding rod is connected to the side wall of the clamping plate. When the drive ring rotates on the side wall of the fastening frame, the drive ring will drive the arc-shaped protrusions to rotate. The raised surface of the arc-shaped protrusions will contact the end of the sliding rod and drive the sliding rod to move inside the through frame.

3. The electron beam welding equipment according to claim 2, characterized in that: The slide bar has a rounded convex shape on the side near the arc-shaped protrusion. A limiting vertical groove is opened inside the through frame. A limiting vertical rod is installed on the outer wall of the slide bar. The limiting vertical rod is slidably disposed inside the limiting vertical groove.

4. The electron beam welding equipment according to claim 3, characterized in that: A compression spring is fitted on the bottom outer circumference of the slide rod. One end of the compression spring is connected to the bottom wall of the through frame, and the other end is connected to the surface of the clamping plate. The clamping plate is made of rubber, has an arc shape, and has friction protrusions on its inner wall.

5. The electron beam welding equipment according to claim 4, characterized in that: Each of the movable frames is provided with an L-shaped bracket on its side wall. The welding chamber is rotatably equipped with two reciprocating screws. The ends of the two reciprocating screws are connected to the output end of a motor. The outer circumferential surface of the reciprocating screws is provided with a mating seat. When the reciprocating screws rotate, they can drive the mating seat to move. One side wall of the L-shaped bracket contacts the side wall of the mating seat, and the other side wall of the L-shaped bracket is connected to the side wall of the fastening frame.

6. The electron beam welding equipment according to claim 5, characterized in that: The side wall of the docking seat is provided with a rectangular groove, and an electric telescopic rod is fixedly installed inside the rectangular groove. The telescopic end of the electric telescopic rod is connected to the side wall of the L-shaped bracket. The inner wall of the welding chamber is provided with a vertical groove, and the movable seat is slidably disposed in the vertical groove.

7. The electron beam welding equipment according to claim 6, characterized in that: The L-shaped bracket has a limiting ring frame fixedly installed on its side wall. The limiting ring frame has a limiting ring groove inside. The fastening frame is rotatably disposed inside the limiting ring groove, and the outer circumferential surface of the fastening frame is provided with a ring wheel that matches the limiting ring groove.

8. The electron beam welding equipment according to claim 7, characterized in that: The welding chamber is equipped with a central shaft that rotates inside. Two gears are fixedly mounted on the outer circumference of the central shaft. Gear rings are fixedly mounted on the outer circumference of both fasteners. The gears and gear rings are meshed together. The end of the central shaft is connected to the output end of the second motor.

9. The electron beam welding equipment according to claim 1, characterized in that: The welding chamber is equipped with cameras and lighting.

10. An electron beam welding process, applicable to an electron beam welding apparatus according to any one of claims 1-9, characterized in that: Includes the following steps: S1. Feed the workpiece to be welded from the feeder on the worktable into the welding chamber. During the feeding process, ensure that the end of the workpiece is close to the clamping plate and that the workpiece is inside the welding chamber. S2. By controlling the clamping mechanism inside the fastening frame, the clamping mechanism drives the clamping plates arranged in a circular array to move. The clamping plates at different positions will move closer to the part to be welded, and then the clamping plates at different positions can fix the part to be welded. S3. Then, the welding chamber is evacuated and electrons are emitted through the cathode in the electron gun. These electrons are accelerated under the action of a high-voltage electrostatic field and focused by an electromagnetic field to form an electron beam with extremely high energy density. When the electron beam hits the workpiece, its huge kinetic energy is converted into heat energy, which melts the workpiece to be welded at the welding point and forms a molten pool, thereby achieving welding.

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