Novel friction stir welding stirring head

Abstract

The utility model relates to the technical field of friction stir welding, and particularly discloses a novel friction stir welding stirring head which comprises an installation mechanism, a locking mechanism assembled on the periphery of the installation mechanism and a switching mechanism assembled in the installation mechanism. The mounting mechanism comprises a shaft body, and a movable cavity is formed in the shaft body; the locking mechanism comprises a rotating sleeve rotationally installed on the periphery of the shaft body and a locking pile installed on the outer wall of the shaft body in a sliding mode. The switching mechanism comprises a rotating seat rotationally mounted in the movable cavity, and locking grooves corresponding to the locking piles are formed in the front end and the rear end of the rotating seat; according to the stirring head, the standby stirring head body and the abraded stirring head body can be conveniently and rapidly switched, disassembly is not needed, time and labor are saved during operation, the situation that the machining progress is delayed is effectively reduced, and more convenience is brought to machining operation.

Description

Technical Field

[0001] This utility model belongs to the field of friction stir welding technology, and specifically relates to a novel friction stir welding head. Background Technology

[0002] Friction stir welding (FSW) is a highly innovative solid-state joining technology. It utilizes a special stirring head that rotates at high speed and is inserted into the joint of the workpieces to be welded during the welding process. Heat is generated through friction between the stirring head and the workpiece material, causing the material to reach a plasticized state. Then, solid-state joining is achieved under the stirring and forging action of the stirring head. Due to its high efficiency, small deformation, low energy consumption, simple equipment, and safety and reliability, FSW has been widely used in many fields such as aerospace, rail transportation, shipbuilding, and new energy vehicles.

[0003] However, most current friction stir welding heads are one-piece designs, which suffer significant wear after prolonged use. When replacing them, the entire friction stir welding head usually needs to be disassembled and replaced, which is time-consuming and labor-intensive, easily delaying the processing progress and causing many problems for the processing operation. Therefore, the applicant proposes a new type of friction stir welding head to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a novel friction stir welding head that allows for quick and easy switching to a spare head after wear, without the need for disassembly. This saves time and effort, effectively reduces delays in processing, and brings greater convenience to the processing operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel friction stir welding head, comprising:

[0007] The mounting mechanism and the locking mechanism assembled on the periphery of the mounting mechanism, and the switching mechanism assembled inside the mounting mechanism;

[0008] The mounting mechanism includes a shaft, and the shaft has a movable cavity inside.

[0009] The locking mechanism includes a rotating sleeve rotatably mounted on the periphery of the shaft and a locking post slidably mounted on the outer wall of the shaft.

[0010] The switching mechanism includes a rotating seat rotatably mounted inside the movable cavity. The front and rear ends of the rotating seat are provided with locking grooves corresponding to the locking stake. The top and bottom of the rotating seat are fixedly mounted with shoulders. The bottom of the shoulders is equipped with a stirring head body. A cutting blade is installed at the bottom of the shoulders on one side of the stirring head body.

[0011] Preferably, a clamping handle is fixedly installed on the top of the shaft, and a groove is provided on the outer wall of the shaft for the locking stake to slide.

[0012] Preferably, a limiting ring is fixedly installed on the inner wall of the rotating sleeve, and a rotating groove is formed on the surface of the shaft for the limiting ring to rotate.

[0013] Preferably, the outer periphery of the rotating sleeve is uniformly distributed with anti-slip blocks, which are made of rubber.

[0014] Preferably, a fixing rod is fixedly installed between the rotating sleeve and the locking post, and the fixing rod is fixed to the shaft body by a fixing knob.

[0015] Preferably, the shoulder has a first mounting groove for mounting the stirring head body, and the stirring head body and the shoulder are fixed together by a first fixing bolt.

[0016] Preferably, the bottom of the shoulder has a second mounting groove for mounting a cutting tool, and the cutting tool is fixed to the shoulder by a second fixing bolt.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) This utility model is equipped with a switching mechanism, which can install two stirring head bodies. When one of the stirring head bodies is worn, the spare stirring head body at the top can be flipped to the bottom position by rotating the rotating seat. This allows for quick switching with the worn stirring head body without disassembly, saving time and effort and effectively reducing delays in processing. At the same time, stirring head bodies of different sizes can be installed, allowing for quick switching of the corresponding size stirring head body according to different material processing requirements, bringing more convenience to the processing operation.

[0019] (2) The present invention has a cutting blade at the bottom of the shoulder, which can be used to cut the burrs generated at the welding edge during the friction stir welding process, effectively reducing the burrs and other issues generated during welding, reducing the amount of subsequent grinding work, and improving the processing effect. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the installation mechanism structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the locking mechanism structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the switching mechanism structure of this utility model;

[0024] Figure 5 This is a schematic cross-sectional view of the shoulder structure of this utility model;

[0025] In the diagram: 1. Mounting mechanism; 11. Clamping handle; 12. Shaft; 13. Slide groove; 14. Movable cavity; 15. Rotating groove; 2. Locking mechanism; 21. Rotating sleeve; 22. Fixing rod; 23. Fixing knob; 24. Locking post; 25. Anti-slip block; 26. Limiting ring; 3. Switching mechanism; 31. Rotating seat; 32. Locking groove; 33. Shaft shoulder; 34. Stirring head body; 35. First mounting groove; 36. First fixing bolt; 37. Second mounting groove; 38. Cutting blade; 39. Second fixing bolt. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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 be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1:

[0030] Please see Figure 1 , Figure 2, Figure 3 , Figure 4 and Figure 5 As shown, a novel friction stir welding head includes:

[0031] The mounting mechanism 1 and the locking mechanism 2 assembled on the periphery of the mounting mechanism 1, and the switching mechanism 3 assembled inside the mounting mechanism 1;

[0032] The mounting mechanism 1 includes a shaft 12, and the shaft 12 has a movable cavity 14 inside;

[0033] The locking mechanism 2 includes a rotating sleeve 21 rotatably mounted on the periphery of the shaft 12 and a locking post 24 slidably mounted on the outer wall of the shaft 12;

[0034] The switching mechanism 3 includes a rotating seat 31 rotatably installed inside the movable cavity 14. The front and rear ends of the rotating seat 31 are provided with locking grooves 32 corresponding to the locking pins 24. The top and bottom of the rotating seat 31 are fixedly installed with shoulders 33. The bottom of the shoulders 33 is equipped with a stirring head body 34. The bottom of the shoulders 33 is located on one side of the stirring head body 34 and a cutting blade 38 is installed.

[0035] As can be seen from the above, by connecting the shaft 12 to the main shaft of the equipment during use, the shaft 12 can be rotated, which can drive the stirring head body 34 to rotate synchronously, making it convenient to perform stirring friction welding on the workpiece. During the stirring friction welding process, the shaft shoulder 33 can be made to fit against the surface of the workpiece, and the cutting tool 38 can be used to cut the burrs generated at the welding edge, which can effectively reduce the burrs and other issues generated by welding, reduce the amount of subsequent grinding work, and improve the processing effect.

[0036] When the bottom stirring head body 34 is worn, rotating the rotating sleeve 21 can drive the locking pin 24 to rotate along the shaft 12, allowing the locking pin 24 to slide out of the locking groove 32 and release the lock on the rotating seat 31. By rotating the rotating seat 31 180°, the spare stirring head body 34 at the top position can be easily rotated to the bottom. By operating the rotating sleeve 21 to rotate in the opposite direction, the locking pin 24 can be re-inserted into the locking groove 32, locking the rotating seat 31. This allows for quick switching of the worn stirring head body 34 without disassembly, saving time and effort and effectively reducing delays in processing. At the same time, stirring head bodies 34 of different sizes can be installed through the shaft shoulder 33, allowing for quick switching of the corresponding size stirring head body 34 according to different material processing requirements, bringing more convenience to the processing operation.

[0037] Depend on Figure 1 and Figure 2It can be seen that a clamping handle 11 is fixedly installed on the top of the shaft 12, and a groove 13 is provided on the outer wall of the shaft 12 for the locking post 24 to slide.

[0038] As can be seen from the above, the clamping handle 11 can be used to easily install and connect the shaft 12 to the spindle of the processing equipment, so that the spindle of the processing equipment can drive the shaft 12 to rotate. The sliding groove 13 can allow the locking pin 24 to slide, and at the same time, it can limit the locking pin 24, so that the locking pin 24 does not tilt or wobble during the sliding process, which can improve the locking strength of the locking pin 24 to the rotating seat 31 and prevent loosening during the rotation.

[0039] For details, please refer to Figure 2 and Figure 3 As shown, a limiting ring 26 is fixedly installed on the inner wall of the rotating sleeve 21, and a rotating groove 15 for the limiting ring 26 to rotate is opened on the surface of the shaft 12.

[0040] As can be seen from the above, the limiting ring 26 is limited by the rotating groove 15, so that the limiting ring 26 can slide in the rotating groove 15, and the rotating sleeve 21 can be operated to rotate, while preventing the limiting ring 26 from falling off.

[0041] For details, please refer to Figure 3 As shown, anti-slip blocks 25 are evenly distributed around the outer periphery of the rotating sleeve 21, and the anti-slip blocks 25 are made of rubber.

[0042] As can be seen from the above, the anti-slip block 25 can increase the friction between the rotating sleeve 21 and the hand, making it easier to rotate the rotating sleeve 21.

[0043] Example 2:

[0044] refer to Figure 3 As shown, a fixing rod 22 is fixedly installed between the rotating sleeve 21 and the locking post 24, and the fixing rod 22 is fixed to the shaft 12 by a fixing knob 23.

[0045] As can be seen from the above, when the rotating sleeve 21 is rotated, the locking pin 24 can be rotated synchronously by the fixing rod 22, which facilitates the separation and locking of the locking pin 24 from the locking groove 32. The fixing knob 23 can be used to fix the fixing rod 22 to prevent the fixing rod 22 from loosening during the locking process, which would cause the locking pin 24 to slip out of the locking groove 32.

[0046] refer to Figure 5 As shown, the shoulder 33 has a first mounting groove 35 for mounting the stirring head body 34, and the stirring head body 34 and the shoulder 33 are fixed together by a first fixing bolt 36.

[0047] As can be seen from the above, by inserting the stirring head body 34 into the first mounting groove 35, the stirring head body 34 can be fixed by the first fixing bolt 36 to prevent the stirring head body 34 from falling off. At the same time, the first mounting groove 35 facilitates the installation of stirring head bodies 34 of different sizes, and the installation operation can be carried out according to the processing requirements.

[0048] refer to Figure 5 As shown, the bottom of the shoulder 33 is provided with a second mounting groove 37 for mounting the cutting tool 38, and the cutting tool 38 is fixed to the shoulder 33 by a second fixing bolt 39.

[0049] As can be seen from the above, by inserting the cutting blade 38 into the second mounting groove 37, the cutting blade 38 can be fixed by the second fixing bolt 39. During the friction stir welding process, the cutting blade 38 can be used to cut the burrs raised on the welding edge, which brings more convenience to the user.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel friction stir welding head, characterized in that, include: The mounting mechanism (1) and the locking mechanism (2) assembled around the mounting mechanism (1), and the switching mechanism (3) assembled inside the mounting mechanism (1); The mounting mechanism (1) includes a shaft (12), and the shaft (12) has a movable cavity (14) inside; The locking mechanism (2) includes a rotating sleeve (21) rotatably mounted on the periphery of the shaft (12) and a locking post (24) slidably mounted on the outer wall of the shaft (12); The switching mechanism (3) includes a rotating seat (31) rotatably mounted inside the movable cavity (14). The front end and rear end of the rotating seat (31) are provided with locking grooves (32) corresponding to the locking stake (24). The top and bottom of the rotating seat (31) are fixedly mounted with shoulders (33). The bottom of the shoulders (33) is mounted with a stirring head body (34). The bottom of the shoulders (33) is located on one side of the stirring head body (34) and a cutting blade (38) is mounted.

2. The novel friction stir welding head according to claim 1, characterized in that: A clamping handle (11) is fixedly installed on the top of the shaft (12), and a groove (13) is provided on the outer wall of the shaft (12) for the locking stake (24) to slide.

3. The novel friction stir welding head according to claim 1, characterized in that: The inner wall of the rotating sleeve (21) is fixedly installed with a limiting ring (26), and the surface of the shaft (12) is provided with a rotating groove (15) for the limiting ring (26) to rotate.

4. The novel friction stir welding head according to claim 1, characterized in that: The rotating sleeve (21) is uniformly distributed with anti-slip blocks (25) on its outer periphery, and the anti-slip blocks (25) are made of rubber.

5. The novel friction stir welding head according to claim 1, characterized in that: A fixing rod (22) is fixedly installed between the rotating sleeve (21) and the locking post (24), and the fixing rod (22) is fixed to the shaft (12) by a fixing knob (23).

6. The novel friction stir welding head according to claim 1, characterized in that: The shoulder (33) has a first mounting groove (35) for mounting the stirring head body (34), and the stirring head body (34) and the shoulder (33) are fixed together by a first fixing bolt (36).

7. The novel friction stir welding head according to claim 1, characterized in that: The bottom of the shoulder (33) is provided with a second mounting groove (37) for mounting a cutting tool (38), and the cutting tool (38) is fixed to the shoulder (33) by a second fixing bolt (39).

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