A friction stir welding tooling fixture

Abstract

This utility model belongs to the field of welding technology, and in particular relates to a friction stir welding fixture. The fixture includes a horizontally positioned base plate, with two horizontally parallel movable blocks vertically positioned on the top of the base plate. Two clamping blocks are positioned between the two movable blocks. The movable blocks are equipped with adjustment mechanisms for adjusting the inclination of the clamping blocks. The top of the base plate is equipped with a clamping drive mechanism for engaging the two movable blocks in a clamping fit. This design uses the movement of the movable blocks to move the clamping blocks to clamp plate or block-shaped welding materials. When the clamping blocks are vertical, they can clamp plate or block-shaped welding materials with flat edges. To clamp plate or block-shaped welding materials with beveled edges, the clamping blocks are tilted, and the movable blocks cause the clamping blocks to tilt and fit against the beveled edges of the welding materials, thus clamping the beveled edges of the welding materials.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, and in particular relates to a fixture for friction stir welding. Background Technology

[0002] Friction stir welding has become one of the key technologies in modern manufacturing because it avoids common defects such as porosity and cracks. It is widely used in scenarios with requirements for lightweighting and high reliability. Moreover, friction stir welding produces no smoke, arc light or radiation, and has low energy consumption and is environmentally friendly. In friction stir welding, due to the high-speed rotation of the drill bit, a clamp is needed to hold and fix the material to be welded.

[0003] Current fixtures directly clamp plates or blocks of welding material using two clamping blocks. However, existing clamping methods can only clamp plates or blocks of welding material with relatively flat edges, and are not convenient for clamping plates or blocks of welding material with beveled edges. Utility Model Content

[0004] The purpose of this invention is to provide a friction stir welding fixture that facilitates the clamping of plate or block welding materials with beveled edges.

[0005] The friction stir welding fixture includes a horizontally arranged base plate, two horizontally parallel movable blocks vertically arranged on the top of the base plate, two clamping blocks arranged between the two movable blocks, an adjustment mechanism for adjusting the inclination of the clamping blocks on the movable blocks, and a clamping drive mechanism for clamping the two movable blocks in a clamping engagement on the top of the base plate.

[0006] Furthermore, the clamping drive mechanism includes a fixing plate that is vertically fixed to the top rear side of the base plate, and the fixing plate is provided with a limiting component for moving the movable block horizontally left and right.

[0007] A rotating block that can rotate left and right is provided on the front side of the fixed plate. One end of the rotating block is connected to one of the movable blocks through a first connecting block, and the other end of the rotating block is connected to another movable block through a second connecting block.

[0008] Both the first connecting block and the second connecting block are hinged to the rotating block and the movable block; a motor that drives the rotating block to rotate is provided on the fixed plate.

[0009] Furthermore, each of the movable blocks has a side plate vertically fixed to its rear side, and the inner side of each side plate extends beyond the movable block. The ends of the first connecting block and the second connecting block that are away from the rotating block are respectively connected to the corresponding side plates.

[0010] Furthermore, the bottom of the movable block is equipped with a first roller that rolls left and right on the top of the base plate.

[0011] Furthermore, the limiting component includes a slider, which is fixed to the rear side wall of the side plate. The front side wall of the fixing plate has a groove for the slider to be inserted and slide left and right. The slider and the groove are in a "T" shape fit.

[0012] Furthermore, the slider is equipped with second rollers on both the upper and lower sides, which roll left and right on both the upper and lower sides of the slide groove.

[0013] Furthermore, a third roller is installed on the rear side of the slider, which rolls left and right on the bottom of the groove.

[0014] Furthermore, the adjustment mechanism includes two horizontally arranged and vertically aligned fixed rods, and the movable block has a first through hole for the fixed rods to pass through.

[0015] One end of one of the fixed rods passes through the first through hole and is hinged to the clamping block, and swings left and right; one end of the other fixed rod passes through the first through hole and is hinged to a connecting rod that swings left and right, and the other end of the connecting rod is hinged to the clamping block, and swings left and right.

[0016] The movable block is equipped with a locking component to restrict the movement of the fixed rod within the first through hole.

[0017] Furthermore, the locking assembly includes an external thread formed on the fixed rod, and each fixed rod is provided with two nuts that are threadedly engaged with it, with the movable block located between the two nuts.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention uses the movement of a movable block to move a clamping block to clamp a plate or block of welding material. When the clamping block is in a vertical state, it can clamp a plate or block of welding material with a flat edge. When clamping a plate or block of welding material with a beveled edge, the clamping block is tilted, and the movable block causes the clamping block to tilt and fit against the plate or block of welding material with a beveled edge, thus completing the clamping of the plate or block of welding material with a beveled edge. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 A top-view structural diagram;

[0022] Figure 3 for Figure 1 A front view of the structure without the clamping block, fixing rod, and nut;

[0023] Figure 4 for Figure 1 A schematic diagram of the right-side view structure;

[0024] The components in the diagram are named as follows: 1. Base plate; 2. First connecting block; 3. Fixed plate; 3.1. Slide groove; 4. Rotating block; 5. Second connecting block; 6. Clamping block; 7. First roller; 8. Movable block; 9. Fixed rod; 10. Nut; 11. Side plate; 12. Slider; 13. Second roller; 14. Third roller. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. 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.

[0026] This embodiment describes a friction stir welding fixture, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a horizontally arranged base plate 1. In use, the base plate 1 is fixed to the existing welding platform. Two horizontally parallel movable blocks 8 are vertically arranged on the top of the base plate 1, and two clamping blocks 6 are arranged between the two movable blocks 8.

[0027] A fixing plate 3 is vertically fixed to the top rear side of the base plate 1. The fixing plate 3 is perpendicular to the movable block 8. A rotating block 4 that can rotate left and right is provided on the front side of the fixing plate 3. A rotating shaft is horizontally fixed to the rear side of the center of the rotating block 4. A second through hole is provided on the fixing plate 3 for the rotating shaft to pass through. The rear end of the rotating shaft passes through the second through hole and is connected to a motor that drives its rotation. The motor is a motor with an existing integrated brake, such as a servo motor with a brake, which can prevent the rotating block 4 from rotating freely after the motor stops. A bearing is installed between the rotating shaft and the second through hole. One end of the rotating block 4 is connected to one of the movable blocks 8 through a first connecting block 2. The other end of the rotating block 4 is connected to another movable block 8 through the second connecting block 5. The front sides of both ends of the rotating block 4 and the front sides of the side plate 11 are horizontally fixed with connecting shafts. The first connecting block 2 and the second connecting block 5 are both provided with third through holes for connection. The first connecting block 2 and the second connecting block 5 are sleeved on the connecting shaft. Bearings are installed between the connecting shaft and the third through holes, so that the first connecting block 2 and the second connecting block 5 are hinged to the rotating block 4 and the movable block 8. The rotating block 4 is driven to rotate by the motor. The rotation of the rotating block 4 will cause the first connecting block 2 and the second connecting block 5 to move, thereby driving the movable block 8 to move.

[0028] Each movable block 8 has a side plate 11 vertically fixed to its rear side, and the inner side of each side plate 11 extends beyond the movable block 8. The inner side of each side plate 11 is the opposite side of the two side plates 11. The right side of the left side plate 11 extends beyond the left movable block 8, and the left side of the right side plate 11 extends beyond the right movable block 8. The ends of the first connecting block 2 and the second connecting block 5 away from the rotating block 4 are respectively connected to the corresponding side plates 11. The connecting shaft connected to the second connecting block 5 and the first connecting block 2 is fixed to the front side of the side plate 11. One end of the second connecting block 5 is connected to the bottom end of the rotating block 4, and the other end of the second connecting block 5 is connected to the left side plate 11. One end of the first connecting block 2 is connected to the top end of the rotating block 4, and the other end of the first connecting block 2 is connected to the right side plate 11. The side plates 11 facilitate the connection between the movable block 8 and the first connecting block 2 or the second connecting block 5.

[0029] A slider 12 is fixed to the rear side wall of the side plate 11. A groove 3.1 is provided on the front side wall of the fixing plate 3 for the slider 12 to be inserted and slide left and right. Both the slider 12 and the groove 3.1 are "T" shaped structures, so that the slider 12 and the groove 3.1 are in a "T" fit to prevent the slider 12 from disengaging from the groove opening of the groove 3.1. The left end of the left groove 3.1 and the right end of the right groove 3.1 are through grooves, so that the slider 12 can be inserted into the groove 3.1 from both ends. The left and right movement of the movable block 8 is restricted by the cooperation of the slider 12 and the groove 3.1. Of course, the slider 12 and the groove 3.1 can also be a dovetail groove structure, or a rectangular frame is fixed to the rear side of the side plate 11. A slide rail is installed in the rectangular frame. The slide rail is parallel to the fixing plate 3, and the end of the slide rail is fixed to the fixing plate 3 by a connecting block. The left and right movement of the movable block 8 can also be restricted by the sliding of the rectangular frame in the slide rail. This section as a whole constitutes the limiting component used to move the active block 8 horizontally.

[0030] The three adjacent sections described above together constitute a clamping drive mechanism for clamping the two movable blocks 8 together. In some embodiments, the clamping drive mechanism may also consist of a hydraulic cylinder mounted on the outside of the two movable blocks 8, with the cylinder barrel mounted on the top of the base plate 1 and the piston rod of the hydraulic cylinder fixed to the movable block 8, thereby moving the movable block 8 by pushing the piston of the hydraulic cylinder.

[0031] In order to support the movable block 8 and facilitate its left and right movement, the bottom of the movable block 8 is equipped with a first roller 7 that rolls horizontally on the top of the base plate 1. Several first rollers 7 are installed. The first rollers 7 are directional wheels that roll left and right. The first rollers 7 can support the movable block 8 and make its left and right movement relatively smooth.

[0032] The upper and lower sides of the slider 12 are equipped with second rollers 13 that roll left and right on both sides of the upper and lower sides of the slide groove 3.1. The second rollers 13 are also directional rollers that roll left and right. The second rollers 13 can reduce the friction between the upper and lower sides of the slider 12 and the slide groove 3.1, making the slider 12 slide more smoothly and facilitating the slider 12 to slide in the slide groove 3.1.

[0033] A third roller 14 is installed on the rear side of the slider 12, which rolls left and right on the bottom of the groove 3.1. The third roller 14 is also a directional roller that rolls left and right. The third roller 14 is installed on the rear side of the slider 12 and contacts the bottom of the groove 3.1, which further reduces the friction between the slider 12 and the groove 3.1, and also facilitates the slider 12 to slide in the groove 3.1.

[0034] Two vertically arranged fixing rods 9 are horizontally arranged between the movable block 8 and the clamping block 6. The movable block 8 has a first through hole for the fixing rods 9 to pass through. One end of one fixing rod 9 passes through the first through hole and is hinged to the clamping block 6, and swings left and right. One end of the other fixing rod 9 passes through the first through hole and is hinged to a left-right swinging connecting rod. The other end of the connecting rod is hinged to the clamping block 6 and swings left and right. The upper fixing rod 9 is directly hinged to the top of the clamping block 6, and the lower fixing rod 9 is hinged to the bottom of the clamping block 6 through the connecting rod. Of course, depending on the length of the movable block 8, four fixing rods 9 can be set on the same movable block 8. The four fixing rods 9 are arranged vertically in pairs. When the top two fixing rods 9 move towards the middle, the top of the clamping block 6 tilts towards the middle, and when the bottom two fixing rods 9 move towards the middle, the bottom of the clamping block 6 tilts towards the middle.

[0035] The outer wall of the fixed rod 9 has external threads, and each fixed rod 9 is provided with two nuts 10 that are threadedly engaged with it. The movable block 8 is located between the two nuts 10. The movement of the fixed rod 9 is restricted by the contact between the two nuts 10 and the movable block 8. When the fixed rod 9 needs to be moved, the nuts 10 are rotated to move the nuts 10 away from the movable block 8, thus moving the fixed rod 9. The movement of the fixed rod 9 changes the distance from the upper and lower ends of the clamping block 6 to the movable block 8, thereby tilting the clamping block 6. In some embodiments, the upper and lower fixed rods 9 can also be staggered. The top of the first through hole is provided with a threaded hole, and a bolt is provided in the threaded hole to fix the fixed rod 9 in the first through hole. This section constitutes a locking assembly for restricting the movement of the fixed rod 9 in the first through hole.

[0036] The two adjacent sections described above together constitute an adjustment mechanism for adjusting the tilt of the clamping block 6. In some embodiments, the adjustment mechanism may also consist of two vertically arranged fixed tubes between the movable block 8 and the clamping block 6. A fixed rod is inserted through the fixed tube, and a bolt is provided on the fixed tube to fix it to the fixed rod. One end of the fixed rod is hinged to the clamping block 6 and swings left and right, and one end of the fixed tube is hinged to the movable block 8 and swings left and right. By adjusting the combined length of the fixed tube and the fixed rod, the distance between the upper and lower ends of the clamping block 6 and the movable block 8 is adjusted, thereby tilting or verticalizing the clamping block 6.

[0037] The working principle and technical effects of this embodiment:

[0038] In use, the base plate 1 is fixed to the existing platform, and then the plate or block of welding material is placed on top of the base plate 1 between the two clamping blocks 6. If the edge of the plate or block of welding material is flat, the clamping block 6 is kept vertical. Then, by rotating the rotating block 4, the rotating block 4 is slowly kept vertical, thereby driving the two movable blocks 8 to move towards the middle through the first connecting block 2 and the second connecting block 5, so that the clamping block 6 clamps the plate or block of welding material. If the edge of the plate or block of welding material is beveled, the nut 10 on the fixing rod 9 is rotated, so that the fixing rod 9 moves horizontally on the movable block 8, so that the clamping block 6 is tilted. Then, the rotating block 4 is rotated, so that the clamping block 6 fits against the beveled plate or block of welding material, thereby clamping the plate or block of welding material with beveled edges.

Claims

1. A friction stir welding fixture, comprising a horizontally arranged base plate (1), characterized in that: The top of the base plate (1) is vertically provided with two horizontally parallel movable blocks (8), and two clamping blocks (6) are provided between the two movable blocks (8). The movable blocks (8) are provided with an adjustment mechanism for adjusting the inclination of the clamping blocks (6), and the top of the base plate (1) is provided with a clamping drive mechanism for clamping the two movable blocks (8).

2. The friction stir welding fixture according to claim 1, characterized in that: The clamping drive mechanism includes a fixed plate (3) that is vertically fixed to the top of the rear side of the base plate (1), and the fixed plate (3) is provided with a limiting component for moving the movable block (8) horizontally to the left and right. A rotating block (4) that can rotate left and right is provided on the front side of the fixed plate (3). One end of the rotating block (4) is connected to one of the movable blocks (8) through the first connecting block (2), and the other end of the rotating block (4) is connected to another movable block (8) through the second connecting block (5). The first connecting block (2) and the second connecting block (5) are both hinged to the rotating block (4) and the movable block (8); the fixed plate (3) is provided with a motor that drives the rotating block (4) to rotate.

3. The friction stir welding fixture according to claim 2, characterized in that: The rear side of each movable block (8) is vertically fixed with a side plate (11), and the inner side of each side plate (11) extends beyond the movable block (8). The ends of the first connecting block (2) and the second connecting block (5) that are away from the rotating block (4) are respectively connected to the corresponding side plate (11).

4. The friction stir welding fixture according to claim 3, characterized in that: The bottom of the movable block (8) is equipped with a first roller (7) that rolls left and right on the top of the base plate (1).

5. The friction stir welding fixture according to claim 4, characterized in that: The limiting component includes a slider (12), which is fixed to the rear side wall of the side plate (11). The front side wall of the fixing plate (3) is provided with a groove (3.1) for the slider (12) to be inserted and slide left and right. The slider (12) and the groove (3.1) are in a "T" shape fit.

6. The friction stir welding fixture according to claim 5, characterized in that: The upper and lower sides of the slider (12) are equipped with second rollers (13) that roll left and right in the groove (3.1).

7. The friction stir welding fixture according to claim 6, characterized in that: The slider (12) is equipped with a third roller (14) that rolls left and right on the bottom of the groove (3.1).

8. The friction stir welding fixture according to claim 1 or 7, characterized in that: The adjustment mechanism includes two horizontally arranged and vertically arranged fixed rods (9), and the movable block (8) has a first through hole for the fixed rods (9) to pass through; One end of one of the fixed rods (9) passes through the first through hole and is hinged to the clamping block (6), and swings left and right; one end of the other fixed rod (9) passes through the first through hole and is hinged to a connecting rod that swings left and right, and the other end of the connecting rod is hinged to the clamping block (6), and swings left and right. The movable block (8) is provided with a locking component for restricting the movement of the fixed rod (9) within the first through hole.

9. The friction stir welding fixture according to claim 8, characterized in that: The locking assembly includes an external thread on the fixed rod (9), and two nuts (10) that are threadedly engaged with the fixed rod (9) are provided on each fixed rod (9), with the movable block (8) located between the two nuts (10).

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