Friction stir welding clamp with adjusting function
By designing an adjustable friction stir welding fixture, the problems of fixture adaptability and stability in the existing technology have been solved. This enables rapid adaptation to workpieces of different sizes and increases clamping force, ensuring workpiece stability during the welding process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING SOONCABLE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-19
AI Technical Summary
Existing friction stir welding fixtures are difficult to adapt quickly to workpieces of different sizes and shapes, and are prone to workpiece slippage and deformation due to welding vibration or uneven clamping force distribution, resulting in low clamping efficiency and high labor costs.
A friction stir welding fixture with adjustable function is designed, which includes a horizontal adjustment mechanism, a vertical adjustment mechanism and a clamping mechanism. The horizontal and vertical adjustment mechanisms are independently controlled and provide precise alignment in combination with scale lines. The clamping mechanism realizes synchronous clamping of the workpiece and provides vertical and horizontal constraints.
It enables rapid adaptation to workpieces of different sizes, improves the versatility and clamping force of the fixture, ensures the stability of the workpiece during the welding process, avoids displacement or warping, and meets the requirements of precision welding.
Smart Images
Figure CN224254446U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fixture technology, specifically relating to a friction stir welding fixture with an adjustable function. Background Technology
[0002] Friction stir welding refers to the use of heat generated by the friction between a high-speed rotating welding tool and the workpiece to locally plasticize the material being welded. As the welding tool moves forward along the welding interface, the plasticized material flows from the front to the rear 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 pressure of the welding tool. During friction stir welding, the workpiece to be welded needs to be clamped to prevent loosening.
[0003] Existing friction stir welding fixtures mostly adopt fixed or single-direction adjustment structures, which are difficult to quickly adapt to workpieces of different sizes / shapes. Moreover, conventional clamping mechanisms are prone to workpiece slippage due to welding vibration or uneven clamping force distribution, making the workpiece easy to deform during welding. This results in low clamping efficiency, high labor costs, and difficulty in meeting processing requirements.
[0004] Therefore, there is a need for a friction stir welding fixture with adjustable function to solve the problems of difficulty in quickly adapting to workpieces of different sizes / shapes and the workpiece slippage caused by welding vibration or uneven clamping force distribution in the existing technology. Utility Model Content
[0005] The purpose of this invention is to provide a friction stir welding fixture with adjustable function to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a friction stir welding fixture with adjustable function, comprising a base plate, a horizontal adjustment mechanism, a vertical adjustment mechanism, a clamping mechanism, scale lines, and a workpiece. The horizontal adjustment mechanism is symmetrically arranged inside the four sides of the base plate, the vertical adjustment mechanism is arranged above the horizontal adjustment mechanism, the clamping mechanism is arranged above the vertical adjustment mechanism, the scale lines are symmetrically arranged on the top surface of the base plate, and the workpiece is fixed by the clamping mechanism.
[0007] It should be noted in the solution that the lateral adjustment mechanism consists of a turntable, a threaded rod, a movable plate, and a connecting block. The base plate has a groove inside, the threaded rod is threaded between the groove and the outer surface of the base plate, the movable plate is rotatably connected to one end of the threaded rod and slidably connected inside the groove, the connecting block is fixedly connected above the movable plate, the turntable is fixedly connected to the other end of the threaded rod, and the outer surface of the turntable is uniformly provided with anti-slip grooves.
[0008] It is worth noting that the vertical adjustment mechanism consists of a fixed frame, an electric telescopic rod, a connecting plate, and a limiting block. The fixed frame is fixedly connected to the top of the connecting block, the electric telescopic rod is fixedly connected to the inside of the fixed frame, the connecting plate is fixedly connected to the extended end of the electric telescopic rod, and the limiting blocks are symmetrically fixedly connected to the front and rear sides of the connecting plate. The inner walls of the front and rear sides of the fixed frame are symmetrically provided with limiting grooves that are adapted to the limiting blocks.
[0009] Furthermore, it should be noted that the clamping mechanism consists of a connecting seat, a first rotating shaft, a second rotating shaft, a limiting rod, a rotating frame, a third rotating shaft, a fourth rotating shaft, a pressing plate, a rotating block, a connecting rod, a fifth rotating shaft, a right-angled edge, and rollers. The connecting seat is fixedly connected to the top of the connecting plate. The first and second rotating shafts are respectively fixedly connected to the left and right sides inside the connecting seat. The third and fourth rotating shafts are respectively symmetrically fixedly connected to the left and right sides inside the rotating frame.
[0010] In a preferred embodiment, the lower end of the limiting rod is rotatably connected to the outside of the second rotating shaft, and the upper end of the limiting rod is rotatably connected to the outside of the fourth rotating shaft.
[0011] In a preferred embodiment, the upper and lower sides of the interior of the rotating block are rotatably connected to the exterior of the third rotating shaft and the first rotating shaft, respectively. The connecting rod is fixedly connected to the left side of the rotating block, the fifth rotating shaft is fixedly connected to the interior of the left side of the connecting rod, and the right-angled side is rotatably connected to the exterior of the fifth rotating shaft.
[0012] In a preferred embodiment, the pressing plate is fixedly connected to the right side of the rotating frame.
[0013] In a preferred embodiment, the rollers are rotatably connected to the front side of the shorter side of the right-angled side.
[0014] Compared with the prior art, the friction stir welding fixture with adjustable function provided by this utility model has at least the following beneficial effects:
[0015] (1) By manually pressing down the pressing plate through the clamping mechanism, the two rollers can be moved to achieve synchronous clamping of the upper surface and side of the workpiece. The upper roller provides vertical downward pressure, and the lower roller applies horizontal lateral constraint to improve the clamping stability of the workpiece and avoid the workpiece from shifting or warping during friction stir welding.
[0016] (2) By independently controlling the horizontal adjustment mechanism and the vertical adjustment mechanism, it can quickly adapt to workpieces of different sizes, improve the versatility of the fixture and the clamping force on the workpiece. At the same time, the scale line and the horizontal adjustment mechanism work together to meet the requirements of precision welding. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0018] Figure 2 This is a top view structural diagram of the present invention;
[0019] Figure 3 This is a schematic diagram of the adjustment mechanism structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the disassembled structure of the clamping mechanism of this utility model.
[0021] In the diagram: 1. Base plate; 2. Horizontal adjustment mechanism; 3. Vertical adjustment mechanism; 4. Clamping mechanism; 5. Scale line; 6. Workpiece; 201. Turntable; 202. Threaded rod; 203. Moving plate; 204. Connecting block; 301. Fixed frame; 302. Electric telescopic rod; 303. Connecting plate; 304. Limiting block; 401. Connecting seat; 402. First rotating shaft; 403. Second rotating shaft; 404. Limiting rod; 405. Rotating frame; 406. Third rotating shaft; 407. Fourth rotating shaft; 408. Pressing plate; 409. Rotating block; 410. Connecting rod; 411. Fifth rotating shaft; 412. Right-angled side; 413. Roller. Detailed Implementation
[0022] The present invention will be further described below with reference to the embodiments.
[0023] Please see Figure 1-4 This utility model provides a friction stir welding fixture with adjustable function, including a base plate 1, a horizontal adjustment mechanism 2, a vertical adjustment mechanism 3, a clamping mechanism 4, scale lines 5, and a workpiece 6. The horizontal adjustment mechanism 2 is symmetrically arranged inside the four sides of the base plate 1, the vertical adjustment mechanism 3 is arranged above the horizontal adjustment mechanism 2, the clamping mechanism 4 is arranged above the vertical adjustment mechanism 3, the scale lines 5 are symmetrically arranged on the top surface of the base plate 1, and the workpiece 6 is fixed by the clamping mechanism 4.
[0024] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the lateral adjustment mechanism 2 consists of a turntable 201, a threaded rod 202, a movable plate 203, and a connecting block 204. The base plate 1 has a sliding groove inside. The threaded rod 202 is threadedly connected between the sliding groove and the outer surface of the base plate 1. The movable plate 203 is rotatably connected to one end of the threaded rod 202 and is slidably connected to the inside of the sliding groove. The connecting block 204 is fixedly connected to the top of the movable plate 203. The turntable 201 is fixedly connected to the other end of the threaded rod 202, and the outer surface of the turntable 201 is evenly provided with anti-slip grooves.
[0025] According to the workpiece size, the lateral adjustment mechanisms 2 on both sides are symmetrically adjusted so that the connecting block 204 is aligned with the welding area of the workpiece, and the scale line 5 on the top surface of the base plate provides a precise alignment reference.
[0026] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the vertical adjustment mechanism 3 consists of a fixed frame 301, an electric telescopic rod 302, a connecting plate 303, and a limiting block 304. The fixed frame 301 is fixedly connected to the top of the connecting block 204, the electric telescopic rod 302 is fixedly connected to the inside of the fixed frame 301, the connecting plate 303 is fixedly connected to the extended end of the electric telescopic rod 302, and the limiting block 304 is symmetrically fixedly connected to the front and rear sides of the connecting plate 303. The inner walls of the front and rear sides of the fixed frame 301 are symmetrically provided with limiting grooves that are compatible with the limiting block 304.
[0027] The height of the clamping mechanism 4 can be adjusted by the vertical adjustment mechanism 3 to match the pressure position required by the workpiece thickness or welding process.
[0028] As can be seen from the above working process, by independently controlling the horizontal adjustment mechanism 2 and the vertical adjustment mechanism 3, workpieces of different sizes can be quickly adapted, improving the versatility of the fixture and the clamping force on the workpiece. At the same time, the scale line 5 and the horizontal adjustment mechanism 2 work together to meet the requirements of precision welding.
[0029] Further as Figure 1 , Figure 3 and Figure 4 As shown, it is worth noting that the clamping mechanism 4 consists of a connecting seat 401, a first rotating shaft 402, a second rotating shaft 403, a limiting rod 404, a rotating frame 405, a third rotating shaft 406, a fourth rotating shaft 407, a pressing plate 408, a rotating block 409, a connecting rod 410, a fifth rotating shaft 411, a right-angled edge 412, and a roller 413. The connecting seat 401 is fixedly connected to the top of the connecting plate 303. The first rotating shaft 402 and the second rotating shaft 403 are respectively fixedly connected to the left and right sides inside the connecting seat 401. The third rotating shaft 406 and the fourth rotating shaft 407 are respectively symmetrically fixedly connected to the left and right sides inside the rotating frame 405.
[0030] Further as Figure 1 , Figure 3 and Figure 4As shown, it is worth noting that the lower end of the limiting rod 404 is rotatably connected to the outside of the second rotating shaft 403, the upper end of the limiting rod 404 is rotatably connected to the outside of the fourth rotating shaft 407, the upper and lower sides of the inside of the rotating block 409 are rotatably connected to the outside of the third rotating shaft 406 and the first rotating shaft 402 respectively, the connecting rod 410 is fixedly connected to the left side of the rotating block 409, the fifth rotating shaft 411 is fixedly connected to the inside of the left side of the connecting rod 410, the right-angled side 412 is rotatably connected to the outside of the fifth rotating shaft 411, and the pressing plate 408 is fixedly connected to the right side of the rotating frame 405.
[0031] Further as Figure 1 , Figure 3 and Figure 4 As shown, it is worth noting that the rollers 413 are rotatably connected to the front side of the short side of the right-angled side 412;
[0032] The rollers 413 can be set to achieve synchronous clamping of the upper surface and side of the workpiece 6. The upper roller provides vertical downward pressure, and the lower roller applies horizontal lateral constraint, forming a "surface-line" composite clamping mode.
[0033] This solution has the following working process: In use, firstly, rotate the turntables 201 on both sides of the base plate 1. The threaded rod 202 drives the moving plate 203 to move horizontally along the slide groove, causing the moving plate 203 and connecting block 204 to shift laterally. Based on the workpiece size, align the connecting block 204 with the workpiece welding area. The scale line 5 on the top surface of the base plate 1 provides a precise alignment reference. Then, activate the electric telescopic rod 302 inside the fixed frame 301 to drive the connecting plate 303 to rise and fall vertically. The limiting block 304 slides along the limiting groove of the fixed frame, ensuring smooth and unbiased movement of the clamping mechanism 4 above. Finally, manually press... The plate 408 moves downward, driving the connecting rod 410 to rotate via the rotating frame 405 and the third rotating shaft 406. At the same time, the limiting rod 404 deflects around the second rotating shaft 403 and the fourth rotating shaft 407. The rotating block 409 rotates around the first rotating shaft 402, driving the connecting rod 410 and the fifth rotating shaft 411 to move downward. The right-angled side 412 rotates outside the fifth rotating shaft 411. The upper roller 413 abuts against the upper surface of the workpiece, and the lower roller 413 abuts against the side of the workpiece. If the clamping force is insufficient, the clamping force of the workpiece can be readjusted through the horizontal adjustment mechanism 2 and the vertical adjustment mechanism 3.
[0034] In summary: By manually pressing down on the clamping mechanism 4, the pressing plate 408 moves the two rollers 413, achieving synchronous clamping of the workpiece's upper surface and side surface. The upper roller 413 provides vertical downward pressure, while the lower roller 413 applies horizontal lateral constraint, improving the clamping stability of the workpiece and preventing it from shifting or warping during friction stir welding. The horizontal adjustment mechanism 2 and the vertical adjustment mechanism 3 are independently controlled, allowing for quick adaptation to workpieces of different sizes, improving the versatility of the fixture and the clamping force on the workpiece. At the same time, the scale line 5 works in conjunction with the horizontal adjustment mechanism 2 to meet the requirements of precision welding.
Claims
1. A friction stir welding fixture with adjustable function, comprising a base plate (1), a horizontal adjustment mechanism (2), a vertical adjustment mechanism (3), a clamping mechanism (4), scale lines (5), and a workpiece (6), characterized in that: The horizontal adjustment mechanism (2) is symmetrically arranged inside the four sides of the base plate (1), the vertical adjustment mechanism (3) is arranged above the horizontal adjustment mechanism (2), the clamping mechanism (4) is arranged above the vertical adjustment mechanism (3), the scale line (5) is symmetrically arranged on the top surface of the base plate (1), and the workpiece (6) is fixed by the clamping mechanism (4).
2. The friction stir welding fixture with adjustable function according to claim 1, characterized in that: The lateral adjustment mechanism (2) consists of a turntable (201), a threaded rod (202), a movable plate (203), and a connecting block (204). The bottom plate (1) has a sliding groove inside. The threaded rod (202) is threaded between the sliding groove and the outer surface of the bottom plate (1). The movable plate (203) is rotatably connected to one end of the threaded rod (202) and is slidably connected to the inside of the sliding groove. The connecting block (204) is fixedly connected above the movable plate (203). The turntable (201) is fixedly connected to the other end of the threaded rod (202), and the outer surface of the turntable (201) is uniformly provided with anti-slip grooves.
3. The friction stir welding fixture with adjustable function according to claim 2, characterized in that: The vertical adjustment mechanism (3) consists of a fixed frame (301), an electric telescopic rod (302), a connecting plate (303), and a limiting block (304). The fixed frame (301) is fixedly connected to the top of the connecting block (204). The electric telescopic rod (302) is fixedly connected to the inside of the fixed frame (301). The connecting plate (303) is fixedly connected to the extended end of the electric telescopic rod (302). The limiting block (304) is symmetrically fixedly connected to the front and rear sides of the connecting plate (303). The inner walls of the front and rear sides of the fixed frame (301) are symmetrically provided with limiting grooves that are compatible with the limiting block (304).
4. A friction stir welding fixture with an adjustable function according to claim 3, characterized in that: The clamping mechanism (4) consists of a connecting seat (401), a first rotating shaft (402), a second rotating shaft (403), a limiting rod (404), a rotating frame (405), a third rotating shaft (406), a fourth rotating shaft (407), a pressing plate (408), a rotating block (409), a connecting rod (410), a fifth rotating shaft (411), a right-angled side (412), and a roller (413). The connecting seat (401) is fixedly connected to the top of the connecting plate (303). The first rotating shaft (402) and the second rotating shaft (403) are respectively fixedly connected to the left and right sides inside the connecting seat (401). The third rotating shaft (406) and the fourth rotating shaft (407) are respectively symmetrically fixedly connected to the left and right sides inside the rotating frame (405).
5. A friction stir welding fixture with an adjustable function according to claim 4, characterized in that: The lower end of the limiting rod (404) is rotatably connected to the outside of the second rotating shaft (403), and the upper end of the limiting rod (404) is rotatably connected to the outside of the fourth rotating shaft (407).
6. A friction stir welding fixture with an adjustable function according to claim 5, characterized in that: The upper and lower sides of the interior of the rotating block (409) are rotatably connected to the exterior of the third rotating shaft (406) and the first rotating shaft (402), respectively. The connecting rod (410) is fixedly connected to the left side of the rotating block (409). The fifth rotating shaft (411) is fixedly connected to the interior of the left side of the connecting rod (410). The right-angled side (412) is rotatably connected to the exterior of the fifth rotating shaft (411).
7. A friction stir welding fixture with an adjustable function according to claim 6, characterized in that: The pressing plate (408) is fixedly connected to the right side of the rotating frame (405).
8. A friction stir welding fixture with an adjustable function according to claim 7, characterized in that: The rollers (413) are rotatably connected to the front side of the short side of the right-angled side (412).