Friction stir welding tool

Abstract

The utility model relates to the technical field of friction stir welding, in particular to a friction stir welding tool which comprises a rotating part, the rotating part is connected to a friction stir welding main shaft, the rotating part comprises a main body, a shaft shoulder and a stirring head, the main body, the shaft shoulder and the stirring head are integrally formed from top to bottom, and the axes of the main body, the shaft shoulder and the stirring head are collinear. An inserting block is fixedly connected to the end of the main body, the inserting block is arranged in a cubic shape, the inserting block and the main body are coaxially arranged, an inserting groove allowing the inserting block to be inserted is formed in the friction stir welding main shaft, a fixing block is fixedly connected to the friction stir welding main shaft, and a first hoop ring and a second hoop ring are rotationally connected to the fixing block; the first hoop ring and the second hoop ring are fixedly connected with clamping plates, the clamping plates are located on the inner walls of the first hoop ring and the second hoop ring, the main body is provided with clamping grooves allowing the clamping plates to be clamped in, and a locking assembly is arranged between the first hoop ring and the second hoop ring. The stirring device has the effects that the stirring head is convenient to replace, and the maintenance efficiency is improved.

Description

Technical Field

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

[0002] Friction stir welding, as a green solid-state joining technology, is widely used in aerospace, rail transit, and shipbuilding industries due to its high welding efficiency, good joint quality, and lack of pollution. During the welding process, a rotating stirring head is inserted into the workpiece and slides along the welding surface. Under the influence of frictional heat and stirring, the material near the stirring head undergoes plastic flow and refills behind it to form a weld, thus completing the weld.

[0003] Currently, friction stir welding, as a solid-state joining technology, suffers from low lifespan due to the high-speed rotation of the stirring head and the thermal fatigue caused by the pressure between the stirring head and the workpiece. Existing stirring heads need to be replaced promptly after wear and damage in order to continue welding work. However, replacing existing stirring heads is cumbersome and time-consuming, reducing maintenance efficiency. Utility Model Content

[0004] To facilitate the replacement of the stirring head and improve maintenance efficiency, this application provides a friction stir welding tool.

[0005] The friction stir welding tool provided in this application adopts the following technical solution:

[0006] A friction stir welding tool includes a rotating component connected to a friction stir welding spindle. The rotating component comprises a main body, a shoulder, and a stirring head. The main body, shoulder, and stirring head are all cylindrical and integrally formed from top to bottom. The axes of the main body, shoulder, and stirring head are collinear. A plug-in block is fixedly connected to the end of the main body. The plug-in block is cubic and coaxial with the main body. The friction stir welding spindle has a plug-in groove for inserting the plug-in block. A fixing block is fixedly connected to the friction stir welding spindle. A first hoop and a second hoop are rotatably connected to the fixing block. Both the first and second hoops can rotatably fit against the side wall of the main body. A locking plate is fixedly connected to both the first and second hoops. The locking plate is located on the inner wall of the first and second hoops. The main body has a locking groove for the locking plate to engage. A locking assembly is provided between the first and second hoops.

[0007] Preferably, the fixing block is arranged in an inverted "T" shape. One end of the first hoop is fixedly connected to a first protrusion, and the other end of the second hoop is fixedly connected to a second protrusion. The two opposite ends of the fixing block are respectively provided with mounting grooves for the first protrusion and the second protrusion to rotate. A first step bolt is connected between the fixing block and the first protrusion and between the fixing block and the second protrusion. Blind holes for the first step bolt to pass through are provided on the fixing block, the first protrusion and the second protrusion. A first fixing nut is connected to the end of the first step bolt that passes through the fixing block.

[0008] Preferably, the locking assembly includes a second stepped bolt, a second fixing nut, a rotating rod, and a locking nut. A third protrusion is fixedly connected to the other end of the first hoop, and a fourth protrusion is fixedly connected to the other end of the second hoop. One end of the rotating rod is rotatably connected to the third protrusion. The third protrusion has a rotating groove for the rotating rod to connect to. The second stepped bolt passes between the third protrusion and the rotating rod. Both the third protrusion and the rotating rod have through holes for the second stepped bolt to pass through. The second fixing nut is connected to the end of the second stepped bolt that passes through the third protrusion. The fourth protrusion has a slot for the rotating rod to rotate and engage. The rotating rod, away from the third protrusion, has a threaded groove that matches the locking nut. The locking nut is connected to the rotating rod.

[0009] Preferably, a limiting block is fitted on the rotating rod, and a limiting groove is provided on the fourth protrusion for the limiting block to be engaged. The locking nut is connected to the rotating rod and abuts against the limiting block.

[0010] Preferably, a spring washer is fitted onto the rotating rod, and the spring washer is located between the limiting block and the locking nut.

[0011] Preferably, the card plate is provided with an extrusion strip, which is located on the side wall of the card plate that contacts the main body.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] This utility model provides a friction stir welding tool. By setting a cubic plug block on the rotating part, the rotation of the rotating part is restricted when it is connected to the friction stir welding spindle. By setting a fixing block, a first hoop ring and a second hoop ring on the friction stir welding spindle, and setting a locking plate on the first hoop ring and the second hoop ring, the first hoop ring and the second hoop ring cover the outside of the rotating part. The locking plate is locked on the rotating part, which restricts the up and down movement of the rotating part while ensuring the stability of the connection of the rotating part. Furthermore, a locking component is set between the first hoop ring and the second hoop ring, which realizes quick disassembly and assembly between the first hoop ring and the second hoop ring, thereby achieving the effect of making the stirring head easy to replace and improving maintenance efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the friction stir welding tool in the embodiments of this application;

[0015] Figure 2 This is a schematic diagram illustrating the locking component in an embodiment of this application;

[0016] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0017] Explanation of reference numerals in the attached drawings: 1. Rotating component; 11. Main body; 111. Insertion block; 112. Slot; 12. Shoulder; 13. Stirring head; 2. Friction stir welding spindle; 21. Insertion slot; 3. Fixing block; 31. First step bolt; 32. First fixing nut; 4. First hoop; 41. First protrusion; 42. Third protrusion; 5. Second hoop; 51. Second protrusion; 52. Fourth protrusion; 6. Clamping plate; 61. Extrusion bar; 7. Locking assembly; 71. Second step bolt; 72. Second fixing nut; 73. Rotating rod; 731. Limiting block; 732. Spring washer; 74. Locking nut. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] This application discloses a friction stir welding tool. (Refer to...) Figure 1 , Figure 2 and Figure 3 The friction stir welding tool includes a rotating component 1 connected to the friction stir welding spindle. The rotating component 1 includes a main body 11, a shoulder 12, and a stirring head 13. The main body 11, shoulder 12, and stirring head 13 are all cylindrical and integrally formed from top to bottom. The axes of the main body 11, shoulder 12, and stirring head 13 are collinear. A plug-in block 111 is fixedly connected to the end of the main body 11. The plug-in block 111 is cubic and coaxial with the main body 11. The friction stir welding spindle has an insertion groove 21 for inserting the insertion block 111. A fixing block 3 is fixedly connected to the friction stir welding spindle. A first hoop 4 and a second hoop 5 are rotatably connected to the fixing block 3. Both the first hoop 4 and the second hoop 5 can be rotatably fitted against the side wall of the main body 11. A locking plate 6 is fixedly connected to both the first hoop 4 and the second hoop 5. The locking plate 6 is located on the inner wall of the first hoop 4 and the second hoop 5. A slot 112 is provided on the main body 11 for the locking plate 6 to be inserted. A locking component 7 is provided between the first hoop 4 and the second hoop 5.

[0021] The fixing block 3 is arranged in an inverted "T" shape. One end of the first hoop 4 is fixedly connected to the first protrusion 41, and the other end of the second hoop 5 is fixedly connected to the second protrusion 51. The two opposite ends of the fixing block 3 are respectively provided with mounting grooves for the first protrusion 41 and the second protrusion 51 to rotate. The fixing block 3 is connected to the first protrusion 41 and the second protrusion 51 with a first step bolt 31. The fixing block 3, the first protrusion 41 and the second protrusion 51 are all provided with blind holes for the first step bolt 31 to pass through. The end of the first step bolt 31 that passes through the fixing block 3 is connected to the first fixing nut 32. This arrangement realizes the rotational connection of the first hoop 4 and the second hoop 5 on the fixing block 3.

[0022] The locking assembly 7 includes a second step bolt 71, a second fixing nut 72, a rotating rod 73, and a locking nut 74. The other end of the first hoop 4 is fixedly connected to a third protrusion 42, and the other end of the second hoop 5 is fixedly connected to a fourth protrusion 52. One end of the rotating rod 73 is rotatably connected to the third protrusion 42. The third protrusion 42 has a rotating groove for connecting the rotating rod 73. The second step bolt 71 passes between the third protrusion 42 and the rotating rod 73. Both the third protrusion 42 and the rotating rod 73 have through holes for the second step bolt 71 to pass through. The second fixing nut 72 is connected to the end of the second step bolt 71 that passes through the third protrusion 42. The fourth protrusion 52 has a slot for the rotating rod 73 to rotate and engage. The part of the rotating rod 73 away from the third protrusion 42 has a threaded groove that matches the locking nut 74. The locking nut 74 is connected to the rotating rod 73.

[0023] A limiting block 731 is fitted on the rotating rod 73, and a limiting groove is opened on the fourth protrusion 52 for the limiting block 731 to be inserted. The locking nut 74 is connected to the rotating rod 73 and abuts against the limiting block 731.

[0024] A spring washer 732 is fitted on the rotating rod 73. The spring washer 732 is located between the limit block 731 and the locking nut 74. The spring washer 732 helps to improve the locking effect of the locking nut 74 on the rotating rod 73.

[0025] A compression strip 61 is attached to the card plate 6. The compression strip 61 is located on the side wall where the card plate 6 contacts the main body 11. The compression strip 61 helps to improve the fixing effect of the card plate 6 on the main body 11.

[0026] The implementation principle of a friction stir welding tool according to an embodiment of this application is as follows: When disassembling the old rotating part 1, simply tighten the locking nut 74 to disengage the limiting block 731 from the limiting groove, then rotate the rotating rod 73 to disengage it from the groove, and then open the first hoop 4 and the second hoop 5 to directly pull out the rotating part 1; When installing the new rotating part 1, insert the plug block 111 on the rotating part 1 into the plug groove 21, then assemble the first hoop 4 and the second hoop 5, then rotate the rotating rod 73 into the groove, then slide the limiting block 731 to engage it in the limiting groove, put on the spring washer 732, and finally tighten the locking nut 74.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A friction stir welding tool, comprising a rotating component (1) connected to a friction stir welding spindle, characterized in that: The rotating component (1) includes a main body (11), a shoulder (12), and a stirring head (13). The main body (11), shoulder (12), and stirring head (13) are all cylindrical. The main body (11), shoulder (12), and stirring head (13) are integrally formed from top to bottom. The axes of the main body (11), shoulder (12), and stirring head (13) are collinear. A plug-in block (111) is fixedly connected to the end of the main body (11). The plug-in block (111) is cubic and coaxial with the main body (11). The friction stir welding spindle has a portion for the plug-in block (111). The insertion slot (21) is inserted into the friction stir welding spindle. A fixing block (3) is fixedly connected to the main shaft. A first hoop (4) and a second hoop (5) are rotatably connected to the fixing block (3). Both the first hoop (4) and the second hoop (5) can be rotatably attached to the side wall of the main body (11). A card plate (6) is fixedly connected to both the first hoop (4) and the second hoop (5). The card plate (6) is located on the inner wall of the first hoop (4) and the second hoop (5). A card slot (112) for the card plate (6) to be inserted is provided on the main body (11). A locking component (7) is provided between the first hoop (4) and the second hoop (5).

2. The friction stir welding tool according to claim 1, characterized in that: The fixing block (3) is arranged in an inverted "T" shape. One end of the first hoop (4) is fixedly connected to a first protrusion (41), and the other end of the second hoop (5) is fixedly connected to a second protrusion (51). The two opposite ends of the fixing block (3) are respectively provided with mounting grooves for the first protrusion (41) and the second protrusion (51) to rotate. A first step bolt (31) is connected between the fixing block (3) and the first protrusion (41) and between the fixing block (3) and the second protrusion (51). A blind hole is provided on the fixing block (3), the first protrusion (41) and the second protrusion (51) for the first step bolt (31) to pass through. The end of the first step bolt (31) that passes through the fixing block (3) is connected to a first fixing nut (32).

3. The friction stir welding tool according to claim 1, characterized in that: The locking assembly (7) includes a second stepped bolt (71), a second fixing nut (72), a rotating rod (73), and a locking nut (74). The other end of the first hoop (4) is fixedly connected to a third protrusion (42), and the other end of the second hoop (5) is fixedly connected to a fourth protrusion (52). One end of the rotating rod (73) is rotatably connected to the third protrusion (42). The third protrusion (42) has a rotating groove for the rotating rod (73) to connect to. The second stepped bolt (71) passes through the third protrusion (42). Between the rotating rod (73) and the third protrusion (42), both the rotating rod (73) and the third protrusion (42) are provided with through holes for the second step bolt (71) to pass through. The second fixing nut (72) is connected to the end of the second step bolt (71) that passes through the third protrusion (42). The fourth protrusion (52) is provided with a slot for the rotating rod (73) to rotate and engage. The rotating rod (73) is provided with a threaded groove on its shaft away from the third protrusion (42) that is compatible with the locking nut (74). The locking nut (74) is connected to the rotating rod (73).

4. The friction stir welding tool according to claim 3, characterized in that: A limiting block (731) is fitted on the rotating rod (73), and a limiting groove is provided on the fourth protrusion (52) for the limiting block (731) to be inserted. The locking nut (74) is connected to the rotating rod (73) and abuts against the limiting block (731).

5. A friction stir welding tool according to claim 4, characterized in that: A spring washer (732) is fitted on the rotating rod (73), and the spring washer (732) is located between the limiting block (731) and the locking nut (74).

6. The friction stir welding tool according to claim 1, characterized in that: An extrusion strip (61) is attached to the card plate (6), and the extrusion strip (61) is located on the side wall where the card plate (6) contacts the main body (11).

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