A friction stir additive manufacturing device for welding and rolling

Abstract

This invention relates to the field of friction stir welding additive manufacturing technology, and in particular to a rolling device for friction stir additive manufacturing during welding. The device includes a stirring head, a ring movably connected to the circumference of the stirring head, and a mounting frame fixedly connected to the circumference of the ring. A connecting component and a rolling component are located at the lower end of the mounting frame on the right side, and the mounting frame is connected to the rolling component via the connecting component. A limiting component is located at the upper end of the connecting component to prevent the rolling component from detaching from the connecting component. An angle conversion mechanism is located on both sides of the upper end of the connecting component. An adaptive component is located at the lower end of the mounting frame on the right side. By incorporating the rolling component, this invention enables continuous rolling of the additives during the friction stir additive manufacturing process. This improves the quality of the weld between the additives and enhances the bonding strength of the materials, eliminating the need to adjust equipment parameters based on specific materials during friction stir additive manufacturing.

Description

Technical Field

[0001] This invention relates to the field of friction stir welding additive manufacturing technology, and in particular to a friction stir welding rolling device for manufacturing additive manufacturing. Background Technology

[0002] Additive manufacturing technology is a technique for manufacturing solid parts by gradually adding materials. Friction stir welding uses a special type of stirring head inserted into the part of the workpiece to be welded and rotates at high speed. The heat generated by the friction between the high-speed rotating welding tool and the workpiece causes the materials to be welded to melt locally. As the welding tool moves forward along the welding interface, the plasticized material flows from the front to the back of the welding tool under the action of the rotational friction force of the welding tool, and forms a dense solid-phase weld under the extrusion of the welding tool. Additive manufacturing technology based on friction stir welding has attracted widespread attention in the industry due to its low cost and fast manufacturing speed.

[0003] In additive manufacturing, friction stir welding (FSW) is used to improve the bonding strength of additive materials. Currently, adjusting parameters of the FSW equipment, such as rotation speed, feed rate, and welding pressure, can optimize the weld seam and weld quality. However, these improvements often require adjustments based on specific materials, lacking a universal solution to enhance additive product quality. Therefore, a welding-compacting device for FSW is needed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stirring friction additive manufacturing device for welding and rolling.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a friction stir additive manufacturing and welding rolling device, comprising a stirring head, a ring movably connected to the circumferential surface of the stirring head, a mounting frame fixedly connected to the circumferential surface of the ring, two mounting frames being provided and symmetrically distributed on both sides of the stirring head, a connecting component and a rolling component being provided at the lower end of the mounting frame located on the right side, the mounting frame being connected to the rolling component through the connecting component, and the rolling component moving together with the stirring head;

[0006] The upper end of the connecting component is provided with a limiting component, which is used to prevent the crushing component from detaching from the connecting component.

[0007] An angle conversion mechanism is provided on both sides of the upper end of the connecting component. The angle conversion mechanism is used to change the placement angle of the rolling wheels on both sides of the rolling component.

[0008] An adaptive component is provided at the lower end of the mounting bracket located on the right side. Two sets of the adaptive component are provided to ensure that the compaction component is always in contact with the additive manufacturing process.

[0009] The connecting assembly includes a bearing housing, a rotating shaft, a swing rod, a connecting seat, a fixed shaft, and a connecting plate. The lower end of the mounting bracket on the right side is fixedly connected to a bearing housing. There are four bearing housings, with the front and rear bearing housings forming a group. The rotating shaft is rotatably connected inside the bearing housing. The swing rod is fixedly connected to the circumferential surface of the rotating shaft. The lower end of the swing rod is rotatably connected to a fixed shaft. The end of the fixed shaft away from the swing rod is fixedly connected to a connecting seat. The lower end of the connecting seat is fixedly connected to a connecting plate.

[0010] The compaction assembly includes a first mounting frame, a first compaction wheel, a second mounting frame, a second compaction wheel, and a hinge. The lower end of the connecting plate is provided with the first mounting frame. The first compaction wheel is rotatably connected inside the first mounting frame. The front and rear sides of the first mounting frame are rotatably connected to the second mounting frame via hinges. The second compaction wheel is rotatably connected inside the second mounting frame.

[0011] The limiting component includes a fixed block, a circular groove, a limiting rod, a handle, a movable disk, a spring, a limiting hole, and a connecting rod. The upper end of the connecting plate is fixedly connected to the fixed block. A circular groove is provided inside the fixed block, and a movable disk is slidably connected inside the circular groove. A limiting rod is fixedly connected inside the movable disk. Both ends of the limiting rod pass through the fixed block and are slidably connected to it. A handle is fixedly connected to the upper end of the limiting rod. A spring is provided on the circumference of the limiting rod. One end of the spring is fixedly connected to the movable disk, and the other end is fixedly connected to the inner wall of the circular groove. A connecting rod is fixedly connected to the upper end of the first mounting frame. A limiting hole is formed on the upper surface of the connecting rod, and the limiting hole mates with the limiting rod.

[0012] Limiting grooves are fixedly connected to both sides of the upper end of the connecting plate, and limiting strips are slidably connected inside the limiting grooves. The limiting strips are fixedly connected to the connecting rod.

[0013] The lower end face of the connecting plate is provided with a plug groove, and a plug block is inserted into the plug groove. The plug block is fixedly connected to the first mounting frame. The end face of the plug block is in the shape of a dovetail groove.

[0014] The angle conversion mechanism includes an L-shaped rod, a sliding hole, a sliding rod, a cylinder, and a connecting block. Cylinders are fixedly connected to both sides of the upper end of the connecting plate. A connecting block is fixedly connected to the extended end of the cylinder. A sliding rod is fixedly connected to the right side of the connecting block. An L-shaped rod is fixedly connected to the upper end of the second mounting frame. A sliding hole is opened on the side end face of the L-shaped rod. The sliding rod is located inside the sliding hole and is slidably connected to the sliding hole.

[0015] The adaptive component includes a mounting base, end caps, and a torsion spring. The mounting bracket on the right side is fixedly connected to the lower end of the mounting base. The mounting base has a hollow cylindrical shape inside. A torsion spring is fixedly connected to the inner wall of the mounting base and is fixedly connected to the rotating shaft. End caps are fixedly connected to both ends of the mounting base and are rotatably connected to the rotating shaft.

[0016] The mounting bracket has two mounting holes on its upper surface.

[0017] The present invention has the following beneficial effects:

[0018] 1. Compared with existing technologies, this device, by setting up a rolling component, allows the rolling component to move along with the stirring head during friction stir additive manufacturing. This continuous rolling of the additives during the friction stir additive manufacturing process improves the quality of the welds between the additives and enhances the bonding strength of the materials. Furthermore, it eliminates the need to adjust equipment parameters based on specific materials during friction stir additive manufacturing; simply moving the rolling component along with the stirring head is sufficient to improve the quality of the additive products.

[0019] 2. Compared with existing technologies, this device, by setting up an L-shaped rod, sliding hole, sliding rod, cylinder, and connecting block, allows the cylinder to extend when the second mounting frame needs to be switched from a horizontal to a vertical position. With the cooperation of the connecting block, the sliding rod can be driven to slide inside the sliding hole. As the sliding rod moves, when it passes the hinge, the second mounting frame rotates downward under the action of gravity. At the same time, with the cooperation of the sliding hole and the sliding rod, it is easy to switch the second mounting frame from a horizontal to a vertical position. When the second mounting frame is in a vertical position, the side of the additive is crushed by the action of the second rolling wheel, which makes the side of the additive less prone to collapse and helps to improve product quality.

[0020] 3. Compared with the prior art, this device, by setting a fixed base, end cap and torsion spring, causes the rotating shaft to rotate under the action of the torsion spring during use. This causes the swing rod to rotate downward, which makes it easy for the first rolling wheel to always be in contact with the additive surface. At the same time, under the action of the torsion spring, the pressure of the first rolling wheel in contact with the additive surface can also be increased, which is beneficial to improving the bonding strength between the additive materials. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective;

[0022] Figure 2 This is a structural schematic diagram of the entire invention from a second perspective;

[0023] Figure 3 For the present invention Figure 2 Enlarged view of section A in the middle;

[0024] Figure 4 This is a structural schematic diagram of the entire invention from a third-person perspective;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of section B;

[0026] Figure 6 This is a schematic diagram of the internal structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged view of section C;

[0028] Figure 8 For the present invention Figure 6 Enlarged view of section D in the middle;

[0029] Figure 9 This is a schematic diagram of the structure of the compaction assembly of the present invention;

[0030] Figure 10 This is a schematic diagram of the connecting plate of the present invention.

[0031] Legend:

[0032] 1. Stirring head; 2. Ring; 3. Mounting bracket; 301. Mounting hole; 4. Connecting assembly; 401. Bearing seat; 402. Rotating shaft; 403. Swing rod; 404. Connecting seat; 405. Fixed shaft; 406. Connecting plate; 5. Adaptive assembly; 501. Fixed seat; 502. End cap; 503. Torsion spring; 6. Limiting assembly; 601. Fixing block; 602. Circular groove; 603. Limiting rod; 604. Handle; 605. Transfer... 606. Moving plate; 607. Spring; 608. Limiting hole; 609. Connecting rod; 700. Angle conversion mechanism; 701. L-shaped rod; 702. Sliding hole; 703. Sliding rod; 704. Cylinder; 705. Connecting block; 8. Rolling assembly; 801. First mounting frame; 802. First rolling wheel; 803. Second mounting frame; 804. Second rolling wheel; 805. Hinge; 9. Limiting strip; 10. Insertion block; 11. Insertion groove; 12. Limiting groove. Detailed Implementation

[0033] Reference Figure 1-10This invention provides a friction stir additive manufacturing (FSM) rolling device, comprising a stirring head 1, a ring 2 movably connected to the circumferential surface of the stirring head 1, and a mounting frame 3 fixedly connected to the circumferential surface of the ring 2. Two mounting frames 3 are provided and symmetrically distributed on both sides of the stirring head 1. A connecting component 4 and a rolling component 8 are provided at the lower end of the mounting frame 3 on the right side. The mounting frame 3 is connected to the rolling component 8 via the connecting component 4, and the rolling component 8 moves together with the stirring head 1. A limiting component 6 is provided at the upper end of the connecting component 4 to prevent the rolling component 8 from detaching from the connecting component 4. An angle conversion mechanism 7 is provided on both sides of the upper end of the connecting component 4 to change the placement angle of the rolling wheels on both sides of the rolling component 8. An adaptive component 5 is provided at the lower end of the mounting frame 3 on the right side. Two sets of adaptive components 5 are provided to ensure that the rolling component 8 is always in contact with the additive manufacturing process.

[0034] In use, the stirring head 1 is passed through the ring 2, and the mounting bracket 3 is installed on the additive end of the friction stir additive manufacturing equipment. Then, the rolling assembly 8 is installed on the connecting assembly 4 using the limiting component 6. As the stirring head 1 moves, the rolling assembly 8 can be moved. With the movement of the rolling assembly 8, the additive is continuously rolled during the friction stir additive manufacturing process. This improves the quality of the weld between the additives and increases the bonding strength of the materials. Therefore, when performing friction stir additive manufacturing, it is not necessary to adjust the equipment parameters according to the specific materials. Simply moving the rolling assembly 8 with the stirring head 1 can improve the quality of the additive product. At the same time, with the cooperation of the angle conversion mechanism 7, the rolling wheels on both sides can be kept in a vertical state, so that the sides of the additive can be rolled, making it less likely for the sides of the additive to collapse, which is beneficial to improving product quality. In order to ensure that the rolling assembly 8 is always in contact with the additive surface, the self-adaptive component 5 facilitates the contact between the rolling assembly 8 and the additive surface.

[0035] The connecting assembly 4 includes a bearing seat 401, a rotating shaft 402, a swing rod 403, a connecting seat 404, a fixed shaft 405, and a connecting plate 406. The lower end of the mounting bracket 3 on the right side is fixedly connected to the bearing seat 401. Four bearing seats 401 are provided, with the front and rear bearing seats 401 forming a group. The rotating shaft 402 is rotatably connected inside the bearing seat 401. A swing rod 403 is fixedly connected to the circumference of the rotating shaft 402. The lower end of the swing rod 403 is rotatably connected to the fixed shaft 405. The end of the fixed shaft 405 away from the swing rod 403 is fixedly connected to the connecting seat 404. The lower end of the connecting seat 404 is fixedly connected to the connecting plate 406. During operation, since there are two swing rods 403 on each side, and the two swing rods 403 are parallel to each other, the compaction assembly 8 is always parallel to the additive surface, thus contributing to a smoother additive surface.

[0036] The compaction assembly 8 includes a first mounting frame 801, a first compaction wheel 802, a second mounting frame 803, a second compaction wheel 804, and a hinge 805. The first mounting frame 801 is located at the lower end of the connecting plate 406. The first compaction wheel 802 is rotatably connected inside the first mounting frame 801. The second mounting frame 803 is rotatably connected to both the front and rear sides of the first mounting frame 801 via hinges 805. The second compaction wheel 804 is rotatably connected inside the second mounting frame 803. During operation, as the mixing head 1 moves, it can... The first mounting frame 801 is moved, which in turn drives the first rolling wheel 802 to move. Under the action of the first rolling wheel 802, the surface of the additive is rolled. At the same time, the movement of the first mounting frame 801 also drives the second mounting frame 803 to move under the action of the hinge 805. When the second mounting frame 803 is in a horizontal state, the second rolling wheel 804 rolls the surface of the additive. When the second mounting frame 803 is in a vertical state, the second rolling wheel 804 rolls the side of the additive.

[0037] The limiting component 6 includes a fixing block 601, a circular groove 602, a limiting rod 603, a handle 604, a movable disk 605, a spring 606, a limiting hole 607, and a connecting rod 608. The fixing block 601 is fixedly connected to the upper end of the connecting plate 406. The fixing block 601 has a circular groove 602 inside. The movable disk 605 is slidably connected inside the circular groove 602. The limiting rod 603 is fixedly connected inside the movable disk 605. Both ends of the limiting rod 603 pass through the fixing block 601 and are slidably connected to the fixing block 601. The handle 604 is fixedly connected to the upper end of the limiting rod 603. The spring 606 is provided on the circumferential surface of the limiting rod 603. One end of the spring 606 is fixedly connected to the movable disk 605, and the other end of the spring 606 is fixedly connected to the inner wall of the circular groove 602. The connecting rod 608 is fixedly connected to the upper end of the first mounting frame 801. The limiting hole 607 is opened on the upper end surface of the connecting rod 608, and the limiting hole 607 cooperates with the limiting rod 603. During operation, when installing the compaction assembly 8, pulling the handle 604 upwards will cause the limiting rod 603 to retract into the circular groove 602. Simultaneously, the upward movement of the limiting rod 603, in conjunction with the moving disc 605, compresses the spring 606, which facilitates the reset of the limiting rod 603. After the limiting rod 603 is retracted into the circular groove 602, the connecting rod 608 is installed at the lower end of the limiting rod 603, aligning the limiting rod 603 with the limiting hole 607. Then, releasing the handle 604 allows the limited rod 603 to reset under the compression of the spring 606, thus inserting it into the limiting hole 607. This effectively limits the connecting rod 608, allowing the compaction assembly 8 to be installed onto the connecting plate 406, preventing it from detaching. This makes installation of the compaction assembly 8 more convenient and quick, and facilitates future replacements.

[0038] Limiting grooves 12 are fixedly connected to both sides of the upper end of the connecting plate 406. Limiting strips 9 are slidably connected inside the limiting grooves 12. The limiting strips 9 are fixedly connected to the connecting rod 608. During operation, by setting the limiting grooves 12 and the limiting strips 9, the installation position of the connecting rod 608 can be limited, thereby facilitating the correspondence between the limiting rod 603 and the limiting hole 607.

[0039] The lower end face of the connecting plate 406 is provided with a plug groove 11, into which a plug block 10 is inserted. The plug block 10 is fixedly connected to the first mounting frame 801. The end face of the plug block 10 is in the shape of a dovetail groove. During operation, when the rolling component 8 is installed, the rolling component 8 can be initially connected to the connecting plate 406 with the cooperation of the plug block 10 and the plug groove 11, which is beneficial for subsequent fixation.

[0040] The angle conversion mechanism 7 includes an L-shaped rod 701, a sliding hole 702, a sliding rod 703, a cylinder 704, and a connecting block 705. Cylinders 704 are fixedly connected to both sides of the upper end of the connecting plate 406. The extended end of the cylinder 704 is fixedly connected to the connecting block 705, and the sliding rod 703 is fixedly connected to the right side of the connecting block 705. An L-shaped rod 701 is fixedly connected to the upper end of the second mounting frame 803. A sliding hole 702 is provided on the side end face of the L-shaped rod 701. The sliding rod 703 is located inside the sliding hole 702 and is slidably connected to the sliding hole 702. During operation, when it is necessary to convert the second mounting frame 803 from a horizontal state to a vertical state, the cylinder 704... When the extension operation is performed, the sliding rod 703 can slide inside the sliding hole 702 with the cooperation of the connecting block 705. As the sliding rod 703 moves, when the sliding rod 703 passes the hinge 805, the second mounting frame 803 rotates downward under the action of gravity. At the same time, with the cooperation of the sliding hole 702 and the sliding rod 703, it is convenient for the second mounting frame 803 to change from a horizontal state to a vertical state. When the second mounting frame 803 is in a vertical state, the side of the additive can be crushed under the action of the second rolling wheel 804, so that the side of the additive is not prone to collapse, which is conducive to improving the quality of the product.

[0041] The adaptive component 5 includes a fixed base 501, an end cap 502, and a torsion spring 503. The fixed base 501 is fixedly connected to the lower end of the mounting bracket 3 on the right side. The fixed base 501 has a hollow cylindrical shape inside. The torsion spring 503 is fixedly connected to the inner wall of the fixed base 501 and is fixedly connected to the rotating shaft 402. The end caps 502 are fixedly connected to both ends inside the fixed base 501 and are rotatably connected to the rotating shaft 402. During operation, the rotating shaft 402 rotates under the action of the torsion spring 503, which drives the swing rod 403 to rotate downward, so that the first rolling wheel 802 is always in contact with the additive surface. At the same time, under the action of the torsion spring 503, the pressure of the first rolling wheel 802 in contact with the additive surface can also be increased, which is beneficial to improving the bonding strength between the additive materials.

[0042] The upper surface of the mounting bracket 3 is provided with two mounting holes 301. During operation, the mounting bracket 3 can be easily fixed to the friction stir additive manufacturing equipment by means of the mounting holes 301.

[0043] Working principle: In use, the stirring head 1 is passed through the ring 2, and the mounting bracket 3 is installed on the additive end of the friction stir additive manufacturing equipment. Then, the handle 604 is pulled upward, which will cause the limiting rod 603 to be retracted into the circular groove 602. At the same time, the upward movement of the limiting rod 603, with the cooperation of the moving plate 605, also compresses the spring 606, and the compressed spring 606 facilitates the reset of the limiting rod 603. After the limiting rod 603 is retracted into the circular groove 602, the connecting rod 608 is installed under the limiting rod 603. When the end is closed, the limiting rod 603 aligns with the limiting hole 607. Then, the handle 604 is released, and under the action of the compression spring 606, the limiting rod 603 is reset, allowing it to insert into the limiting hole 607. This limits the connecting rod 608, enabling the crushing assembly 8 to be installed on the connecting plate 406. After the crushing assembly 8 is installed, the movement of the stirring head 1 moves the first mounting frame 801, which in turn moves the first crushing wheel 802. The first rolling wheel 802 can roll the surface of the additive material. Simultaneously, the movement of the first mounting frame 801, driven by the hinge 805, also moves the second mounting frame 803. When the second mounting frame 803 is horizontal, the second rolling wheel 804 also rolls the surface of the additive material. When it is necessary to change the second mounting frame 803 from horizontal to vertical, the cylinder 704 extends, and with the cooperation of the connecting block 705, it can drive the sliding rod 703 within the sliding hole 702. As the slide rod 703 moves, when it passes the hinge 805, the second mounting frame 803 rotates downwards under the action of gravity. Simultaneously, with the cooperation of the sliding hole 702 and the slide rod 703, the second mounting frame 803 can easily change from a horizontal to a vertical state. When the second mounting frame 803 is in a vertical state, the side of the additive is crushed by the second rolling wheel 804, which makes the side of the additive less prone to collapse and helps improve product quality.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A friction stir additive manufacturing apparatus for welding and rolling, comprising a stirring head (1), characterized in that: The stirring head (1) is movably connected to a ring (2) on its circumference. The ring (2) is fixedly connected to a mounting bracket (3) on its circumference. There are two mounting brackets (3) and they are symmetrically distributed on both sides of the stirring head (1). The mounting bracket (3) on the right side is provided with a connecting component (4) and a rolling component (8) at its lower end. The mounting bracket (3) is connected to the rolling component (8) through the connecting component (4). The rolling component (8) moves together with the stirring head (1). The upper end of the connecting component (4) is provided with a limiting component (6), which is used to prevent the crushing component (8) from detaching from the connecting component (4). Angle conversion mechanism (7) is provided on both sides of the upper end of the connecting component (4). The angle conversion mechanism (7) is used to change the placement angle of the rolling wheels on both sides of the rolling component (8). An adaptive component (5) is provided at the lower end of the mounting bracket (3) located on the right side. Two sets of the adaptive component (5) are provided. The adaptive component (5) is used to ensure that the compaction component (8) is always in contact with the additive. The connecting assembly (4) includes a bearing seat (401), a rotating shaft (402), a swing rod (403), a connecting seat (404), a fixed shaft (405), and a connecting plate (406). The lower end of the mounting bracket (3) on the right side is fixedly connected to the bearing seat (401). There are four bearing seats (401), with the front and rear bearing seats (401) forming a group. The rotating shaft (402) is rotatably connected inside the bearing seat (401). The swing rod (403) is fixedly connected to the circumferential surface of the rotating shaft (402). The lower end of the swing rod (403) is rotatably connected to the fixed shaft (405). The end of the fixed shaft (405) away from the swing rod (403) is fixedly connected to the connecting seat (404). The lower end of the connecting seat (404) is fixedly connected to the connecting plate (406). The compaction assembly (8) includes a first mounting frame (801), a first compaction wheel (802), a second mounting frame (803), a second compaction wheel (804), and a hinge (805). The lower end of the connecting plate (406) is provided with the first mounting frame (801). The first compaction wheel (802) is rotatably connected inside the first mounting frame (801). The front and rear sides of the first mounting frame (801) are rotatably connected to the second mounting frame (803) through the hinge (805). The second compaction wheel (804) is rotatably connected inside the second mounting frame (803). The angle conversion mechanism (7) includes an L-shaped rod (701), a sliding hole (702), a sliding rod (703), a cylinder (704), and a connecting block (705). The cylinders (704) are fixedly connected to both sides of the upper end of the connecting plate (406). The connecting block (705) is fixedly connected to the extended end of the cylinder (704). The sliding rod (703) is fixedly connected to the right side of the connecting block (705). The L-shaped rod (701) is fixedly connected to the upper end of the second mounting frame (803). The sliding hole (702) is opened on the side end face of the L-shaped rod (701). The sliding rod (703) is located inside the sliding hole (702) and is slidably connected to the sliding hole (702). The adaptive component (5) includes a fixed base (501), an end cap (502), and a torsion spring (503). The mounting bracket (3) on the right side is fixedly connected to the lower end of the fixed base (501). The fixed base (501) is hollow cylindrical inside. The torsion spring (503) is fixedly connected to the inner wall of the fixed base (501). The torsion spring (503) is fixedly connected to the rotating shaft (402). The end caps (502) are fixedly connected to both ends inside the fixed base (501). The end caps (502) are rotatably connected to the rotating shaft (402).

2. The friction stir additive manufacturing rolling device according to claim 1, characterized in that: The limiting component (6) includes a fixing block (601), a circular groove (602), a limiting rod (603), a handle (604), a movable disk (605), a spring (606), a limiting hole (607), and a connecting rod (608). The fixing block (601) is fixedly connected to the upper end of the connecting plate (406). The fixing block (601) has a circular groove (602) inside. The movable disk (605) is slidably connected inside the circular groove (602). The limiting rod (603) is fixedly connected inside the movable disk (605). The limiting rod (603) passes through the fixing block (608) at both ends. A fixed block (601) is slidably connected to a fixed block (601). A handle (604) is fixedly connected to the upper end of the limiting rod (603). A spring (606) is provided on the circumferential surface of the limiting rod (603). One end of the spring (606) is fixedly connected to the moving disk (605), and the other end of the spring (606) is fixedly connected to the inner wall of the circular groove (602). A connecting rod (608) is fixedly connected to the upper end of the first mounting frame (801). A limiting hole (607) is opened on the upper end surface of the connecting rod (608), and the limiting hole (607) cooperates with the limiting rod (603).

3. The friction stir additive manufacturing rolling device according to claim 2, characterized in that: Both sides of the upper end of the connecting plate (406) are fixedly connected to limit grooves (12), and limit strips (9) are slidably connected inside the limit grooves (12). The limit strips (9) are fixedly connected to the connecting rod (608).

4. The friction stir additive manufacturing rolling device according to claim 2, characterized in that: The lower end face of the connecting plate (406) is provided with a plug groove (11), and a plug block (10) is inserted into the plug groove (11). The plug block (10) is fixedly connected to the first mounting frame (801). The end face of the plug block (10) is in the shape of a dovetail groove.

5. The friction stir additive manufacturing rolling device according to claim 1, characterized in that: The mounting bracket (3) has two mounting holes (301) on its upper surface.

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