A friction stir welding stirring head clamping device

Abstract

The present invention relates to the field of welding heat dissipation, and specifically to a stir friction welding stirring head clamping device, comprising: a clamping head, wherein the clamping head is provided with a plurality of ventilation slots equidistantly distributed around the circumference, and a main shaft is fixed to the clamping head; a sleeve, movably sleeved on the main shaft, a support plate is fixed to the side of the sleeve away from the clamping head, a cooling mechanism connected to the sleeve is provided on the support plate, and the cooling mechanism is used to convey coolant into the sleeve; a filter box, which is arranged on the support plate and connected to the cooling mechanism, a sieve plate for filtering the coolant is fixed in the filter box, and a sealing mechanism for closing the filter box is provided on the filter box; a cleaning mechanism, which is arranged in the filter box and cooperates with the sealing mechanism, a driving assembly connected to the cleaning mechanism is provided on the support plate, and the driving assembly drives the sealing mechanism to move through the cleaning mechanism.

Description

Technical Field

[0001] The invention relates to the field of welding heat dissipation, in particular to a friction stir welding stirring head clamping device. Background Art

[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 partially melt the material to be welded. When 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 rotating friction force of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool.

[0003] Friction stir welding (FSW) can replace traditional fusion welding and resistance welding to a certain extent. Riveting is particularly suitable for welding long and large components. Today, FSW has demonstrated significant advantages in aluminum alloy welding and is widely used in aerospace, industrial, and rail industries.

[0004] Currently, during friction stir welding, the heat generated by the stir head acts on the material being welded and diffuses through the tool holder to the spindle of the friction welder. Because friction welding is a melting welding technique that generates heat through friction, the temperature rise of the stir head during operation is very high. This heat is then transferred to the spindle through the tool holder, resulting in high spindle temperatures. However, existing tool holders lack heat dissipation devices, and typically require dedicated spindle oil cooling devices or other methods to reduce the temperature rise. Consequently, the existing structure is complex and consumes additional energy, failing to achieve the desired simplicity and energy-saving benefits. Summary of the Invention

[0005] The object of the present invention is to provide a friction stir welding stirring head clamping device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A friction stir welding stirring head clamping device, comprising:

[0008] A clamping head, wherein a plurality of ventilation slots are equidistantly distributed around the circumference are formed on the clamping head, and a main shaft is fixed to the clamping head;

[0009] A sleeve, movably sleeved on the spindle, a support plate fixed to a side of the sleeve away from the clamping head, a cooling mechanism connected to the sleeve provided on the support plate, the cooling mechanism being used to deliver coolant into the sleeve;

[0010] a filter box, disposed on the support plate and connected to the cooling mechanism, wherein a sieve plate for filtering the coolant is fixed in the filter box, and a sealing mechanism for sealing the filter box is provided on the filter box;

[0011] A cleaning mechanism is arranged in the filter box and cooperates with the sieve plate and the sealing mechanism. A driving assembly connected to the cleaning mechanism is provided on the support plate. The driving assembly can drive the cleaning mechanism to clean impurities placed on the sieve plate and drive the sealing mechanism to move through the cleaning mechanism.

[0012] As a further solution of the present invention: the cooling mechanism includes a liquid storage box fixedly mounted on the support plate, a water pump is fixed on the side of the liquid storage box away from the support plate, the water pump is connected to a conduit connected to the sleeve, and the sleeve is provided with a circulation component connected to the filter box.

[0013] As a further solution of the present invention: the circulation component includes a guide tube fixedly installed on the sleeve, a movable tube that passes through the sleeve is movably installed in the guide tube, a discharge hole is provided at one end of the movable tube away from the sleeve, a support structure connected to the movable tube and the guide tube is provided on the support plate, and the guide tube is connected to the filter box.

[0014] As a further solution of the present invention: the support structure includes a slot provided on the guide tube, a fixing ring fixedly installed on the movable tube and engaged with the slot, and a spring No. 1 mounted on the guide tube and abutting against the fixing ring.

[0015] As a further solution of the present invention: the sealing mechanism includes a square groove opened on the filter box, an elastic component arranged on the support plate, a sealing plate fixedly mounted on the elastic component and cooperating with the square groove, and the sealing plate is connected to the cleaning mechanism.

[0016] As a further solution of the present invention: the elastic component includes a hollow rod fixedly installed on the support plate, a support rod is movably installed in the hollow rod, a No. 3 spring is fixed in the hollow rod to abut against the support rod, and the support rod is fixedly connected to the sealing plate.

[0017] As a further solution of the present invention: the cleaning mechanism includes a push plate movably installed in the filter box, a limiting hole is provided on the push plate, a support sleeve passing through the filter box is fixed on the push plate, a driven component connected to the support sleeve and the limiting hole is provided on the support plate, the driven component is connected to the driving component, and the push plate cooperates with the sieve plate and the sealing plate.

[0018] As a further solution of the present invention: the driven component includes a movable rod movably installed in the supporting sleeve, a limiting ring engaged with the limiting hole is fixed on the movable rod, a No. 2 spring is sleeved on the movable rod and the limiting ring, the movable rod is connected to the driving component and fixed with the limiting rod, and a limiting groove engaged with the limiting rod is opened on the supporting sleeve.

[0019] As a further solution of the present invention: the driving assembly includes a motor fixedly mounted on the support plate, a turntable rotatably mounted on the support plate and connected to the motor output shaft, and a connecting plate fixedly mounted on the movable rod, a straight groove being provided on the connecting plate, and a protrusion engaged with the straight groove being fixed on the turntable.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the present application can ensure that the temperature of the spindle does not rise too high through the combination of air cooling and water cooling. During the welding process, the cooling mechanism works and delivers the coolant to the spindle. After the spindle is filled with coolant, it will be delivered to the filter box, and under the action of the sieve plate, the coolant is filtered. In order to ensure that the sieve plate is in an unobstructed state, the drive assembly can clean the sieve plate through the cleaning mechanism, and under the action of the cleaning mechanism, drive the sealing mechanism to move to discharge impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a structural schematic diagram of an embodiment of a friction stir welding stirring head clamping device.

[0022] Figure 2 This is a structural schematic diagram of another angle in an embodiment of a friction stir welding stirring head clamping device.

[0023] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A.

[0024] Figure 4 This is a schematic diagram of a half-section structure of an embodiment of a friction stir welding stirring head clamping device.

[0025] Figure 5 This is a schematic diagram of the connection relationship between part of the cooling mechanism, the sealing mechanism, and part of the cleaning mechanism in one embodiment of a friction stir welding stirring head clamping device.

[0026] Figure 6 This is a schematic diagram of the exploded structure of a portion of the cooling mechanism in one embodiment of a friction stir welding stirring head clamping device.

[0027] Figure 7 This is a schematic diagram of the explosion structure of the cleaning mechanism in one embodiment of the friction stir welding stirring head clamping device.

[0028] Figure 8 This is a schematic diagram of the exploded structure of a portion of the sealing mechanism in one embodiment of a friction stir welding stirring head clamping device.

[0029] In the figure: 1. Clamping head; 2. Ventilation slot; 3. Spindle; 4. Sleeve; 5. Support plate; 6. Liquid storage box; 7. Water pump; 8. Conduit; 9. Guide tube; 10. Slot; 11. Movable tube; 12. Fixing ring; 13. Spring No. 1; 14. Discharge hole; 15. Filter box; 16. Sieve plate; 17. Square slot; 18. Push plate; 19. Limiting hole; 20. Support sleeve; 21. Movable rod; 22. Limiting ring; 23. Spring No. 2; 24. Connecting plate; 25. Motor; 26. Turntable; 27. Hollow rod; 28. Support rod; 29. ​​Spring No. 3; 30. Sealing plate. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] See also Figures 1 to 8 In an embodiment of the present invention, a friction stir welding stirring head clamping device includes:

[0033] A clamping head 1 is provided with a plurality of ventilation slots 2 equidistantly distributed around the circumference. A main shaft 3 is fixed to the clamping head 1. When friction welding is required, the welding tool handle can be inserted into the clamping head 1. Since the ventilation slot 2 is provided at the end of the clamping head 1 away from the tool handle, the heat generated during the welding process is quickly dissipated. At the same time, the ventilation slot 2 is in the shape of a fan blade. During the welding process, the main shaft 3 rotates, causing the ventilation slot 2 to act as a fan, thereby accelerating heat dissipation.

[0034] See also Figure 1-6, sleeve 4, movably sleeved on the spindle 3, the sleeve 4 is fixed with a support plate 5 on the side away from the clamping head 1, and a cooling mechanism connected to the sleeve 4 is provided on the support plate 5, and the cooling mechanism is used to transport coolant into the sleeve 4, and the cooling mechanism includes a liquid storage box 6 fixedly mounted on the support plate 5, and a water pump 7 is fixed on the side of the liquid storage box 6 away from the support plate 5, and a conduit 8 connected to the sleeve 4 is connected to the water pump 7, and a circulation component connected to the filter box 15 is provided on the sleeve 4, wherein the circulation component includes a liquid storage box 6 fixedly mounted on the support plate 5, and a water pump 7 is fixed on the side of the liquid storage box 6 away from the support plate 5. The guide tube 9 on the sleeve 4 has a movable tube 11 movably installed in the guide tube 9, which passes through the sleeve 4. A discharge hole 14 is provided at one end of the movable tube 11 away from the sleeve 4. A supporting structure connected to the movable tube 11 and the guide tube 9 is provided on the support plate 5. The guide tube 9 is connected to the filter box 15. The above-mentioned support structure includes a slot 10 provided on the guide tube 9, a fixing ring 12 fixedly installed on the movable tube 11 and engaged with the slot 10, and a spring 13 sleeved on the guide tube 9 and abutting against the fixing ring 12.

[0035] It should be noted that there are two through holes on the main shaft 3. During the friction welding process, the heat generated by the stirring head acts on the welding material on the one hand, and diffuses to the main shaft 3 through the tool handle on the other hand. In order to prevent the main shaft 3 from being damaged due to temperature rise, it is necessary to perform heat dissipation treatment on the main shaft 3. Under the action of the ventilation slot 2, air cooling can be performed. In order to increase the heat dissipation effect, the main shaft 3 can be cooled by coolant. In the initial state, the No. 1 spring 13 is in a compressed state. Under the action of the No. 1 spring 13, the movable tube 11 is located at the end of the stroke away from the filter box 15, and the fixed ring 12 is located at the end of the stroke on the side of the slot 10. The movable tube 11 can be divided into two parts. One part has a smaller inner diameter near the side of the sleeve 4 and is sealed and movably connected to the movable tube 11. The inner diameter of the other part is larger than the diameter of the movable tube 11. The discharge hole 14 is located in the movable tube 11 near the side of the sleeve 4. When the main shaft 3 needs to be During cooling, at this time, the water pump 7 works and transports the coolant in the liquid storage box 6 to the sleeve 4 through the conduit 8. At this time, the coolant will enter the gap between the sleeve 4 and the main shaft 3 from the bottom of the sleeve 4, and enter the main shaft 3 through the through hole located below. Under the action of the coolant, the main shaft 3 is cooled. When the coolant fills the sleeve 4 and the main shaft 3, as the coolant continues to be transported, the coolant will enter the movable tube 11 and drive the movable tube 11 to move in the direction away from the sleeve 4, thereby driving the fixed ring 12 to slide in the slot 10, so that the No. 1 spring 13 is compressed, and the movable tube 11 will also drive the discharge hole 14 to move. When the discharge hole 14 moves to the position of the movable tube 11 with a larger inner diameter, the coolant will enter the guide tube 9 through the discharge hole 14 and be transported to the filter box 15. Under the action of the No. 1 spring 13, it is ensured that the sleeve 4 and the main shaft 3 are filled with coolant, thereby ensuring the cooling effect.

[0036] See also Figure 1-2 、 Figure 4-5 、 Figure 8 , the filter box 15 is arranged on the support plate 5 and is connected to the cooling mechanism, and a sieve plate 16 for filtering the coolant is fixed in the filter box 15, and a sealing mechanism for closing the filter box 15 is provided on the filter box 15, and the sealing mechanism includes a square groove 17 opened on the filter box 15, an elastic component arranged on the support plate 5, and a sealing plate 30 fixedly mounted on the elastic component and cooperating with the square groove 17, and the sealing plate 30 is connected to the cleaning mechanism, wherein the elastic component includes a hollow rod 27 fixedly mounted on the support plate 5, a support rod 28 is movably installed in the hollow rod 27, and a No. 3 spring 29 is fixed in the hollow rod 27 to abut against the support rod 28, and the support rod 28 is fixedly connected to the sealing plate 30.

[0037] Furthermore, in order to ensure the filtering effect of the sieve plate 16, the filter box 15 needs to be in a closed state when the coolant enters the filter box 15. In the initial state, the No. 3 spring 29 is in a compressed state. Under the action of the No. 3 spring 29, the support rod 28 is located at the end of the stroke away from the hollow rod 27. The square groove 17 is closed under the action of the sealing plate 30. At this time, under the action of the guide tube 9, the coolant is transported to the filter box 15. Under the action of the sieve plate 16, the coolant is filtered, and the filtered coolant will be circulated to the liquid storage box 6.

[0038] See also Figure 2-5 、 Figure 7 , a cleaning mechanism is arranged in the filter box 15 and cooperates with the sieve plate 16 and the sealing mechanism. The cleaning mechanism includes a push plate 18 movably mounted in the filter box 15, and a limiting hole 19 is opened on the push plate 18. A supporting sleeve 20 that passes through the filter box 15 is fixed on the push plate 18. The support plate 5 is provided with a driven component connected with the supporting sleeve 20 and the limiting hole 19, and the driven component is connected with the driving assembly, and the push plate 18 cooperates with the sieve plate 16 and the sealing plate 30, wherein the driven assembly includes a movable rod 21 movably mounted in the support sleeve 20, and a limiting ring 22 that is engaged with the limiting hole 19 is fixed on the movable rod 21. A No. 2 spring 23 is sleeved on the movable rod 21 and the limiting ring 22, and the movable rod 21 is connected to the driving assembly and fixed with the limiting rod, and a limiting groove that is engaged with the limiting rod is opened on the support sleeve 20.

[0039] Furthermore, as the sieve plate 16 is used for a longer time, the sieve holes on the sieve plate 16 may be clogged, so the sieve plate 16 needs to be cleaned to ensure that the coolant can be filtered normally. In the initial state, under the action of the driving component, the movable rod 21 is located at the end of the stroke away from the filter box 15, and the No. 2 spring 23 is in a normal state. At this time, the limiting ring 22 is engaged with the limiting hole 19. Under the action of the limiting ring 22, the push plate 18 is located at the end of the stroke away from the sealing plate 30. When the sieve plate 16 needs to be cleaned, the driving component moves, driving the movable rod 21 to move, and under the action of the No. 2 spring 23, the support sleeve 20 is driven to move synchronously, thereby driving the push plate 18 to move. Under the action of the push plate 18, the impurities remaining on the sieve plate 16 are pushed to the sealing plate 30. On one side, when the sealing plate 30 moves to the position abutting the sealing plate 30, the push plate 18 will drive the sealing plate 30 to move toward the hollow rod 27 until the push plate 18 moves to the position abutting the filter box 15. At this time, the push plate 18 cannot move and seals the filter box 15, and the movable rod 21 continues to move, so that the No. 2 spring 23 is compressed. The movable rod 21 will drive the limiting ring 22 to separate from the limiting hole 19 and drive the sealing plate 30 to move, so that a gap is generated between the sealing plate 30 and the push plate 18, thereby ensuring that impurities placed on the push plate 18 are separated from the push plate 18 due to gravity. The driving assembly continues to move, so that the movable rod 21 moves toward the initial position, and controls the movement of the push plate 18 with the limiting hole 19 through the limiting ring 22 until the push plate 18 returns to the initial position, and repeats the above steps to ensure that the sieve plate 16 is cleaned.

[0040] See also Figure 2-4 The support plate 5 is provided with a driving assembly connected to the cleaning mechanism, and the driving assembly can drive the cleaning mechanism to clean the impurities placed on the sieve plate 16, and drive the sealing mechanism to move through the cleaning mechanism. The driving assembly includes a motor 25 fixedly mounted on the support plate 5, a turntable 26 rotatably mounted on the support plate 5 and connected to the output shaft of the motor 25, and a connecting plate 24 fixedly mounted on the movable rod 21. A straight groove is provided on the connecting plate 24, and a protrusion engaged with the straight groove is fixed on the turntable 26.

[0041] Finally, when the screen plate 16 needs to be cleaned, the motor 25 works to drive the turntable 26 to rotate. Since the protrusion is engaged with the straight groove, the connecting plate 24 is driven to move under the action of the protrusion, thereby driving the movable rod 21 to move. Since the limit groove is engaged with the limit rod, the connecting plate 24 is ensured to move along the length direction of the support sleeve 20.

[0042] Taking the embodiment of the combination of all the features recorded in this application as an example, when in use, in the initial state, the No. 1 spring 13 is in a compressed state. Under the action of the No. 1 spring 13, the movable tube 11 is located at the end of the stroke away from the filter box 15, and the fixing ring 12 is located at the end of the stroke on one side of the slot 10. The No. 3 spring 29 is in a compressed state. Under the action of the No. 3 spring 29, the support rod 28 is located at the end of the stroke away from the hollow rod 27. Under the action of the sealing plate 30, the square slot 17 is closed. When the spindle 3 needs to be cooled, the water pump 7 works and transports the coolant in the liquid storage box 6 to the sleeve 4 through the conduit 8. At this time, the coolant will It will enter the gap between the sleeve 4 and the spindle 3 from the bottom of the sleeve 4, and enter the spindle 3 through the through hole located below. Under the action of the coolant, the spindle 3 is cooled. When the coolant fills the sleeve 4 and the spindle 3, as the coolant continues to be transported, the coolant will enter the movable tube 11 and drive the movable tube 11 to move in the direction away from the sleeve 4, thereby driving the fixed ring 12 to slide in the groove 10, so that the No. 1 spring 13 is compressed. The movable tube 11 will also drive the discharge hole 14 to move. When the discharge hole 14 moves to the position of the movable tube 11 with a larger inner diameter, the coolant will enter the guide tube 9 through the discharge hole 14 and be transported to the filter box 15. Under the action of the sieve plate 16, the coolant is filtered, and the filtered coolant will be circulated into the liquid storage box 6. As the sieve plate 16 is used for a longer time, the sieve holes on the sieve plate 16 may be clogged, so the sieve plate 16 needs to be cleaned. At this time, the motor 25 works to drive the turntable 26 to rotate. Due to the engagement of the protrusion with the straight groove, the connecting plate 24 is driven to move under the action of the protrusion, thereby driving the movable rod 21 to move. Due to the engagement of the limit groove with the limit rod, the connecting plate 24 is ensured to move along the length direction of the support sleeve 20. The movable rod 21 will also drive the support sleeve 20 to move synchronously through the second spring 23, thereby driving the push plate 18 to move. Under the action of the push plate 18, the impurities remaining on the sieve plate 16 are pushed to the side of the sealing plate 30. When the sealing plate 30 moves to the position abutting the sealing plate 30, the push plate 18 will drive the sealing plate 30 to move toward the hollow rod 27 until the push plate 18 moves to the position abutting the filter box 15. At this time, the push plate 18 cannot move and seals the filter box 15. The movable rod 21 continues to move, so that the No. 2 spring 23 is compressed. The movable rod 21 will drive the limiting ring 22 to separate from the limiting hole 19, and drive the sealing plate 30 to move, so that a gap is generated between the sealing plate 30 and the push plate 18, thereby ensuring that the impurities placed on the push plate 18 are separated from the push plate 18 due to gravity.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0044] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A friction stir welding stirring head clamping device, characterized in that: include: A clamping head (1), wherein the clamping head (1) is provided with a plurality of ventilation slots (2) distributed equidistantly around the circumference, and a main shaft (3) is fixed to the clamping head (1); A sleeve (4) is movably sleeved on the main shaft (3); a support plate (5) is fixed on a side of the sleeve (4) away from the clamping head (1); a cooling mechanism connected to the sleeve (4) is provided on the support plate (5); the cooling mechanism is used to transport cooling liquid into the sleeve (4); a filter box (15) disposed on the support plate (5) and connected to the cooling mechanism, a sieve plate (16) for filtering the coolant being fixed in the filter box (15), and a sealing mechanism for sealing the filter box (15) being provided on the filter box (15); a cleaning mechanism disposed in the filter box (15) and cooperating with the sieve plate (16) and the sealing mechanism; a driving assembly connected to the cleaning mechanism is disposed on the support plate (5); the driving assembly can drive the cleaning mechanism to clean impurities placed on the sieve plate (16), and drive the sealing mechanism to move via the cleaning mechanism; The cooling mechanism comprises a liquid storage box (6) fixedly mounted on the support plate (5); a water pump (7) is fixed on a side of the liquid storage box (6) away from the support plate (5); a conduit (8) connected to the sleeve (4) is connected to the water pump (7); and a circulation component connected to the filter box (15) is provided on the sleeve (4); The circulation assembly comprises a guide tube (9) fixedly mounted on the sleeve (4), a movable tube (11) penetrating the sleeve (4) being movably mounted in the guide tube (9), a discharge hole (14) being provided at one end of the movable tube (11) away from the sleeve (4), a support structure connected to the movable tube (11) and the guide tube (9) being provided on the support plate (5), and the guide tube (9) being connected to the filter box (15); The support structure comprises a slot (10) provided on the guide tube (9), a fixing ring (12) fixedly mounted on the movable tube (11) and engaging with the slot (10), and a spring (13) sleeved on the guide tube (9) and in contact with the fixing ring (12).

2. A friction stir welding stirring head clamping device according to claim 1, characterized in that: The sealing mechanism comprises a square groove (17) provided on the filter box (15), an elastic component provided on the support plate (5), and a sealing plate (30) fixedly mounted on the elastic component and cooperating with the square groove (17); the sealing plate (30) is connected to the cleaning mechanism.

3. The friction stir welding stirring head clamping device according to claim 2, characterized in that: The elastic component comprises a hollow rod (27) fixedly mounted on the support plate (5), a support rod (28) movably mounted in the hollow rod (27), a No. 3 spring (29) fixed in the hollow rod (27) and in contact with the support rod (28), and the support rod (28) is fixedly connected to the sealing plate (30).

4. The friction stir welding stirring head clamping device according to claim 2, characterized in that: The cleaning mechanism comprises a push plate (18) movably mounted in the filter box (15), a limiting hole (19) being provided on the push plate (18), a support sleeve (20) penetrating the filter box (15) being fixed on the push plate (18), a driven component connected to the support sleeve (20) and the limiting hole (19) being provided on the support plate (5), the driven component being connected to the driving component, and the push plate (18) cooperating with the sieve plate (16) and the sealing plate (30).

5. The friction stir welding head clamping device according to claim 4, characterized in that: The driven assembly includes a movable rod (21) movably mounted in the supporting sleeve (20), a limiting ring (22) engaged with the limiting hole (19) is fixed on the movable rod (21), a No. 2 spring (23) is sleeved on the movable rod (21) and the limiting ring (22), the movable rod (21) is connected to the driving assembly and fixed with the limiting rod, and a limiting groove engaged with the limiting rod is opened on the supporting sleeve (20).

6. The friction stir welding stirring head clamping device according to claim 5, characterized in that: The driving assembly comprises a motor (25) fixedly mounted on the support plate (5), a turntable (26) rotatably mounted on the support plate (5) and connected to the output shaft of the motor (25), and a connecting plate (24) fixedly mounted on the movable rod (21), wherein a straight groove is formed on the connecting plate (24), and a protrusion is fixed on the turntable (26) to engage with the straight groove.

Images