Aluminum alloy friction stir welding equipment with self-adaptive pressure adjustment function

Abstract

The invention discloses aluminum alloy friction stir welding equipment with a self-adaptive pressure adjustment function, and relates to the technical field of welding equipment, the aluminum alloy friction stir welding equipment comprises a base, a device body is fixedly mounted at the top of the base, welding equipment is fixedly mounted on the side face of the device body, and a workbench is arranged below the welding equipment; the device comprises a device body, a workbench is fixedly installed on the side face of the device body, connecting plates are fixedly installed on the two sides of the workbench, electric push rods are fixedly installed on the side faces of the connecting plates, and driving forks are fixedly installed at the other ends of the electric push rods. According to the clamping tool, the cross shaft is matched with the clamping plate with the inverted-triangle-shaped groove, the weldment can be rapidly clamped, the clamping tool can adapt to aluminum alloy parts of different shapes and sizes through rotation of the cross shaft, the problem that a traditional clamping tool is poor in adaptability is solved, and the processing capacity of the equipment on diversified weldments is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to an aluminum alloy friction stir welding device with adaptive pressure regulation. Background Technology

[0002] In the practical application of aluminum alloy friction stir welding technology, traditional welding equipment has gradually revealed many problems that are difficult to adapt to production needs, becoming a key bottleneck restricting welding efficiency and quality. Traditional welding fixtures have significant limitations. Most fixtures are designed with a fixed structure and can only accommodate aluminum alloy parts of specific shapes and sizes. When faced with diverse welding needs, frequent fixture changes are required, which not only increases operational complexity but also significantly extends production preparation time and reduces overall processing efficiency. At the same time, some clamping structures rely on manual adjustment of clamping force, which is prone to uneven clamping force or loosening, causing the workpiece to shift during welding and resulting in defects such as incomplete penetration and surface grooves, which seriously affect the stability of welding quality. To address these issues, we propose an adaptive pressure-adjustable aluminum alloy friction stir welding device. Summary of the Invention

[0003] The purpose of this invention is to provide an aluminum alloy friction stir welding device with adaptive pressure adjustment.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an adaptive pressure-adjustable aluminum alloy friction stir welding device, comprising a base, a device body fixedly mounted on the top of the base, a welding device fixedly mounted on the side of the device body, a worktable provided below the welding device, the worktable fixedly mounted on the side of the device body, connecting plates fixedly mounted on both sides of the worktable, an electric push rod fixedly mounted on the side of the connecting plate, and an active fork fixedly mounted on the other end of the electric push rod, a driven fork provided on the surface of the active fork, a cross shaft provided between the driven fork and the active fork, and a clamping plate fixedly mounted on the other end of the driven fork.

[0005] As a further aspect of the present invention: four sets of support legs are fixedly installed at the bottom of the base, and foot pads are fixedly installed at the bottom of each of the four sets of support legs.

[0006] As a further aspect of the present invention, the front of the device body is provided with several sets of heat dissipation grooves.

[0007] As a further aspect of the present invention: a control device is provided on the front of the device body, the control device including a display screen and operation buttons.

[0008] As a further aspect of the present invention: a reinforcing rib is fixedly installed at the connection between the device body and the connecting plate, and the reinforcing rib is triangular in shape.

[0009] As a further aspect of the present invention: the side of the clamping plate is provided with an inverted triangular groove.

[0010] As a further embodiment of the present invention: the two ends of the cross shaft are respectively inserted into the fork opening of the active fork and the fork opening of the driven fork, and the active fork and the driven fork form a universal rotation structure through the cross shaft; when the electric push rod pushes the active fork to move towards the weldment, the driven fork can rotate freely around the cross shaft in the range of 0-35°, causing the clamping plate to rotate synchronously with the driven fork, so that the inner wall of the inverted triangular groove on the side of the clamping plate is tightly fitted with the outer wall of the aluminum alloy parts of different shapes.

[0011] As a further aspect of the present invention: the control device, the electric push rod, and the welding equipment are all electrically connected via wires; the clamping pressure of the clamping plate and the stirring head speed and welding speed of the welding equipment can be preset via the operation buttons of the control device; the display screen of the control device displays the actual output thrust of the electric push rod and the operating parameters of the welding equipment in real time; when the actual output thrust of the electric push rod reaches the preset clamping pressure, the control device sends a stop signal to the electric push rod, and the electric push rod stops extending.

[0012] As a further aspect of the present invention: the plurality of heat dissipation grooves are evenly distributed along the vertical direction of the front of the device body, the distance between two adjacent heat dissipation grooves is 7-9cm, each heat dissipation groove includes 4-6 parallel rectangular holes, the length of the rectangular holes is 9-11cm and the width is 3-5mm; the heat dissipation grooves penetrate through the front and back of the device body to form a through air circulation channel, through which the heat generated by the internal components of the device body is discharged to the outside, maintaining the operating temperature of the components in the range of 40-60℃.

[0013] As a further aspect of the present invention: the two right-angled sides of the reinforcing rib are welded and fixed to the side of the device body and the upper surface of the connecting plate, respectively. The material of the reinforcing rib is the same as that of the device body and the connecting plate, and the thickness is 10-14mm. The lateral tension or thrust generated when the electric push rod is working is transmitted to the reinforcing rib through the connecting plate. The triangular structure of the reinforcing rib evenly distributes the force to the device body, avoiding cracks or deformation at the weld between the connecting plate and the device body.

[0014] Compared with the prior art, the beneficial effects of the present invention by adopting the above technical solution are as follows: 1. This invention uses a linkage structure consisting of an electric push rod, an active fork, a cross shaft, and a driven fork, combined with a clamping plate with an inverted triangular groove, to achieve rapid clamping of welded parts and adapt to aluminum alloy parts of different shapes and sizes through the rotation of the cross shaft. This solves the problem of poor adaptability of traditional clamping fixtures and improves the equipment's ability to handle diverse welded parts. 2. This invention provides a stable driving force through an electric push rod, making the clamping force of the clamping plate on the weldment uniform and controllable, avoiding the displacement of the weldment due to loose clamping. At the same time, the inverted triangular groove of the clamping plate can further limit the displacement of the weldment during the welding process, ensuring that the welding part is always aligned with the stirring head, reducing defects such as incomplete penetration and surface grooves caused by the shaking of the weldment, and improving the welding quality.

[0015] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the foot pad structure of the present invention; Figure 3 This is a schematic diagram of the connecting plate structure of the present invention; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Base; 2. Device body; 3. Welding equipment; 4. Workbench; 5. Connecting plate; 6. Electric push rod; 7. Driving fork; 8. Cross shaft; 9. Driven fork; 10. Clamping plate; 11. Heat dissipation groove; 12. Control device; 13. Reinforcing rib; 14. Support leg; 15. Foot pad. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0019] Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] Please see the appendix Figure 1 -Appendix Figure 4This invention provides an adaptive pressure-adjustable aluminum alloy friction stir welding device, including a base 1, a device body 2 fixedly installed on the top of the base 1, a welding device 3 fixedly installed on the side of the device body 2, a workbench 4 provided below the welding device 3, and the workbench 4 fixedly installed on the side of the device body 2. Connecting plates 5 are fixedly installed on both sides of the workbench 4, an electric push rod 6 is fixedly installed on the side of the connecting plate 5, and an active fork 7 is fixedly installed on the other end of the electric push rod 6. A driven fork 9 is provided on the surface of the active fork 7, and a cross shaft 8 is provided between the driven fork 9 and the active fork 7. A clamping plate 10 is fixedly installed on the other end of the driven fork 9. The above solution, through the linkage structure composed of electric push rod 6, active fork 7, cross shaft 8 and driven fork 9, and in conjunction with clamping plate 10 with inverted triangular groove, can not only achieve rapid clamping of welded parts, but also adapt to aluminum alloy parts of different shapes and sizes through the rotation of cross shaft 8. This solves the problem of poor adaptability of traditional clamping fixtures and improves the equipment's ability to handle diverse welded parts.

[0021] like Figure 1 As shown, four sets of support legs 14 are fixedly installed on the bottom of the base 1, and foot pads 15 are fixedly installed on the bottom of each of the four sets of support legs 14. The above solution involves fixing four sets of support legs 14 to the bottom of the base 1, with foot pads 15 fixedly installed on the bottom of each of the four sets of support legs 14. This distributes the weight of the device and improves its stability during use.

[0022] like Figure 1 As shown, the front of the device body 2 is provided with several sets of heat dissipation grooves 11; By adopting the above solution, several sets of heat dissipation grooves 11 are provided on the front of the device body 2, thereby effectively dissipating heat from the components inside the device body 2 and improving the service life of the device.

[0023] like Figure 1 As shown, a control device 12 is provided on the front of the device body 2. The control device 12 includes a display screen and operation buttons. The above solution is adopted: by providing a control device 12 on the front of the device body 2, and the control device 12 includes a display screen and operation buttons, the operation and use of the device can be guaranteed.

[0024] like Figure 1 As shown, a reinforcing rib 13 is fixedly installed at the connection between the device body 2 and the connecting plate 5, and the reinforcing rib 13 is triangular in shape. The above solution is adopted: a reinforcing rib 13 is fixedly installed at the connection between the device body 2 and the connecting plate 5. The reinforcing rib 13 is triangular in shape. Triangles have stability, thereby strengthening the connection between the device body 2 and the connecting plate 5.

[0025] like Figure 4 As shown, the side of the clamping plate 10 is provided with an inverted triangular groove; The above solution is adopted: by opening an inverted triangular groove on the side of the clamping plate 10, the part to be processed can be better positioned.

[0026] In this invention, the two ends of the cross shaft 8 are respectively inserted into the fork opening of the active fork 7 and the fork opening of the driven fork 9. The active fork 7 and the driven fork 9 form a universal rotation structure through the cross shaft 8. When the electric push rod 6 pushes the active fork 7 to move towards the weldment, the driven fork 9 can rotate freely around the cross shaft 8 in the range of 0-35°, causing the clamping plate 10 to rotate synchronously with the driven fork 9, so that the inner wall of the inverted triangular groove on the side of the clamping plate 10 is closely fitted with the outer wall of aluminum alloy parts of different shapes (such as rectangles and trapezoids).

[0027] In this invention, the control device 12 is electrically connected to the electric push rod 6 and the welding equipment 3 via wires. The clamping pressure of the clamping plate 10 (0.6-2.2MPa) and the stirring head speed (500-1500r / min) and welding speed (50-150mm / min) of the welding equipment 3 can be preset via the operation buttons of the control device 12. The display screen of the control device 12 displays the actual output thrust of the electric push rod 6 and the operating parameters of the welding equipment 3 in real time. When the actual output thrust of the electric push rod 6 reaches the preset clamping pressure, the control device 12 sends a stop signal to the electric push rod 6, and the electric push rod 6 stops extending.

[0028] In this invention, the heat dissipation slots 11 are evenly distributed along the vertical direction of the front of the device body 2. The distance between two adjacent heat dissipation slots 11 is 7-9cm. Each heat dissipation slot 11 includes 4-6 parallel rectangular holes with a length of 9-11cm and a width of 3-5mm. The heat dissipation slots 11 penetrate through the front and back of the device body 2 to form a through-type air circulation channel. The heat generated by the internal components of the device body 2 is conducted to the outside through this channel, maintaining the operating temperature of the components in the range of 40-60℃.

[0029] In this invention, the two right-angled sides of the reinforcing rib 13 are welded and fixed to the side of the device body 2 and the upper surface of the connecting plate 5, respectively. The material of the reinforcing rib 13 is the same as that of the device body 2 and the connecting plate 5, and the thickness is 10-14mm. When the electric push rod 6 is working, the lateral tension or thrust generated is transmitted to the reinforcing rib 13 through the connecting plate 5. The triangular structure of the reinforcing rib 13 evenly distributes the force to the device body 2, avoiding cracks or deformation at the weld between the connecting plate 5 and the device body 2.

[0030] Working principle: First, confirm that the four sets of support legs 14 and foot pads 15 of the equipment base 1 are stable to ensure that the device is placed securely; check that the heat dissipation groove 11 on the front of the device body 2 is not blocked and that the control device 12 can be powered on and displayed normally; place the aluminum alloy part to be welded in the center of the workbench 4, adjust the position of the part so that the welding part is aligned with the bottom of the welding equipment 3. The electric push rod 6 is activated by the control device 12, which pushes the active fork 7 to move. The active fork 7 drives the driven fork 9 to rotate through the cross shaft 8, eventually causing the clamping plate 10 at the end of the driven fork 9 to move closer to the workpiece. The workpiece is clamped by the inverted triangular groove on the side of the clamping plate 10, completing the clamping. The welding pressure, stirring head speed, welding speed and other parameters are set on the display screen of the control device 12. The adaptive pressure adjustment parameters are adjusted according to the thickness and material of the aluminum alloy part. After the parameters are set, the welding equipment 3 is started by the operation button of the control device 12. The equipment performs friction stirring welding according to the preset parameters. The welding status can be observed in real time through the display screen. After the welding is completed, the welding equipment 3 is turned off first, and then the electric push rod 6 is reset by the control device 12 to release the clamping plate 10. The welded part is then removed. Finally, the main power of the equipment is turned off and the worktable 4 is cleaned.

[0031] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0032] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting the scope of protection of this invention.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0034] For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. An adaptive pressure-regulated aluminum alloy friction stir welding device, comprising a base (1), characterized in that: The device body (2) is fixedly installed on the top of the base (1). Welding equipment (3) is fixedly installed on the side of the device body (2). A workbench (4) is provided below the welding equipment (3). The workbench (4) is fixedly installed on the side of the device body (2). A connecting plate (5) is fixedly installed on both sides of the workbench (4). An electric push rod (6) is fixedly installed on the side of the connecting plate (5). An active fork (7) is fixedly installed at the other end of the electric push rod (6). A driven fork (9) is provided on the surface of the active fork (7). A cross shaft (8) is provided between the driven fork (9) and the active fork (7). A clamping plate (10) is fixedly installed at the other end of the driven fork (9).

2. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 1, characterized in that: The base (1) has four sets of support legs (14) fixedly installed at the bottom, and each of the four sets of support legs (14) has a foot pad (15) fixedly installed at the bottom.

3. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 1, characterized in that: The front of the device body (2) is provided with several sets of heat dissipation grooves (11).

4. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 1, characterized in that: The front of the device body (2) is provided with a control device (12), which includes a display screen and operation buttons.

5. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 1, characterized in that: A reinforcing rib (13) is fixedly installed at the connection between the device body (2) and the connecting plate (5), and the reinforcing rib (13) is triangular.

6. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 1, characterized in that: The side of the clamp (10) is provided with an inverted triangular groove.

7. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 1, characterized in that, The two ends of the cross shaft (8) are respectively inserted into the fork of the active fork (7) and the fork of the driven fork (9). The active fork (7) and the driven fork (9) form a universal rotation structure through the cross shaft (8). When the electric push rod (6) pushes the active fork (7) to move towards the weldment, the driven fork (9) can rotate freely around the cross shaft (8) in the range of 0-35°, causing the clamping plate (10) to rotate synchronously with the driven fork (9), so that the inner wall of the inverted triangular groove on the side of the clamping plate (10) fits tightly with the outer wall of the aluminum alloy parts of different shapes.

8. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 3, characterized in that, The several sets of heat dissipation grooves (11) are evenly distributed along the vertical direction of the front of the device body (2). The distance between two adjacent sets of heat dissipation grooves (11) is 7-9cm. Each set of heat dissipation grooves (11) contains 4-6 parallel rectangular holes with a length of 9-11cm and a width of 3-5mm. The heat dissipation grooves (11) penetrate the front and back of the device body (2).

9. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 4, characterized in that, The control device (12) is electrically connected to the electric push rod (6) and the welding equipment (3) via wires. The clamping pressure of the clamping plate (10) and the stirring head speed and welding speed of the welding equipment (3) can be preset by the operation button of the control device (12). The display screen of the control device (12) displays the actual output thrust of the electric push rod (6) and the operating parameters of the welding equipment (3) in real time. When the actual output thrust of the electric push rod (6) reaches the preset clamping pressure, the control device (12) sends a stop signal to the electric push rod (6), and the electric push rod (6) stops extending.

10. The adaptive pressure-adjustable aluminum alloy friction stir welding equipment according to claim 5, characterized in that, The two right-angled sides of the reinforcing rib (13) are welded and fixed to the side of the device body (2) and the upper surface of the connecting plate (5), respectively. The material of the reinforcing rib (13) is the same as that of the device body (2) and the connecting plate (5) and the thickness is 10-14mm. The lateral tension or thrust generated by the electric push rod (6) when it is working is transmitted to the reinforcing rib (13) through the connecting plate (5). The triangular structure of the reinforcing rib (13) evenly distributes the force to the device body (2).

Images