A method for controlling connection between an aluminum door panel and a crash beam

Abstract

The application relates to a car door aluminum plate and bumper beam connection control method, and belongs to the technical field of car door aluminum plate and bumper beam assembly, which comprises the following steps: after positioning of a car door aluminum plate and a bumper beam on a clamp is completed, a first moment of force is used to tighten a connecting piece between the car door aluminum plate and the bumper beam; a hemming process and an electrophoretic coating process are carried out on the car door aluminum plate; after the hemming process is completed, a second moment of force is used to continue to tighten the connecting piece between the car door aluminum plate and the bumper beam, and the second moment of force is greater than the first moment of force. By adopting the first moment of force to tighten and connect the bumper beam and the car door aluminum plate, the strength of the car door aluminum plate is strengthened through the hemming process, and finally the second moment of force is adopted to complete the tightening and connection of the bumper beam and the car door aluminum plate, so that the size of the car door aluminum plate is ensured, the deformation is reduced, and the structure is reliable.

Description

Technical Field

[0001] This application relates to the field of assembly technology of aluminum door panels and anti-collision beams, and in particular to a method for controlling the connection between aluminum door panels and anti-collision beams. Background Technology

[0002] Lightweight design is of great significance to a vehicle in many aspects, including driving performance, energy conservation and emission reduction, and regulatory safety. Therefore, aluminum sheets are currently used for the inner and outer panels of car doors. Compared with traditional steel sheets, aluminum sheets can reduce weight, which is beneficial to improving the overall vehicle lightweighting.

[0003] However, due to the poor rigidity of aluminum plates, they cannot be connected to steel plate parts by traditional spot welding. Most of them are connected by riveting or threading. After the aluminum plates are tightened by threading, they are pulled by the anti-collision beam, which may cause local deformation, affecting the flange surface dimensions. This can lead to the door surface being lower or higher than the front, and the stability is difficult to guarantee. Ultimately, it affects the perceived dimensional quality of the front door and front fender, front door and rear door, and rear door and rear side panel of the entire vehicle. Summary of the Invention

[0004] This application provides a method for controlling the connection between an aluminum panel and a crash beam in a car door, in order to solve the problem in related technologies where the poor rigidity of the aluminum panel easily leads to dimensional deviations during connection.

[0005] This application provides a method for controlling the connection between a car door aluminum panel and a crash beam, including the following steps:

[0006] After the aluminum door panel and the anti-collision beam are positioned on the fixture, the connecting parts between the aluminum door panel and the anti-collision beam are tightened with the first torque;

[0007] An edge-wrapping process is performed on the aluminum panel of the car door.

[0008] After the edge-wrapping process is completed on the aluminum door panel, a second torque is used to further tighten the connecting piece between the aluminum door panel and the anti-collision beam. The second torque is greater than the first torque.

[0009] The above technical solution involves using a first torque to tighten the anti-collision beam and the aluminum door panel, followed by an edge-wrapping process to effectively strengthen the aluminum door panel. Then, a second torque is used to further tighten the aluminum door panel and the anti-collision beam, thus completing the connection between the aluminum door panel and the anti-collision beam. Tightening the anti-collision beam and the aluminum door panel in two stages, with the second tightening performed after the edge-wrapping process, effectively reduces dimensional deviations in the aluminum door panel and ensures the quality of automobile production.

[0010] In some embodiments, an electrophoretic coating process is also performed on the aluminum door panel.

[0011] By employing the above technical solution, an electrophoretic coating process is applied to the aluminum panel of the car door, thereby further improving the strength of the aluminum panel and reducing the deformation that may occur during the tightening process between the aluminum panel and the anti-collision beam, ensuring a reliable connection between the aluminum panel and the anti-collision beam.

[0012] In some embodiments, the first torque used is between 1.5 Nm and 2.5 Nm.

[0013] The above technical solution uses a first torque of 1.5Nm to 2.5Nm to tighten the connecting aluminum panel of the car door and the anti-collision beam. The first torque can reduce the deformation of the aluminum panel of the car door and ensure reliable operation.

[0014] In some embodiments, the second torque used is between 7.5 Nm and 8.5 Nm.

[0015] The above technical solution uses a second torque of 7.5Nm to 8.5Nm to tighten the aluminum panel of the car door and the anti-collision beam, effectively connecting the aluminum panel of the car door and the anti-collision beam.

[0016] In some embodiments, the door aluminum panel and the anti-collision beam are positioned on the clamp, specifically including the following steps:

[0017] Insert the anti-collision beam positioning pin hole on the anti-collision beam into the positioning pin on the fixture;

[0018] The door aluminum plate is covered on top of the anti-collision beam, and the tightening nut on the anti-collision beam is aligned with the through hole on the door aluminum plate;

[0019] Flip the flipping positioning pin on the fixture into place so that the flipping positioning pin is inserted into the door aluminum plate positioning pin hole on the door aluminum plate.

[0020] The above technical solution effectively positions the anti-collision beam on the fixture by inserting the anti-collision beam positioning pin hole and positioning pin. Then, the door aluminum plate is positioned on the anti-collision beam, and the flip positioning pin is used to perform the final assembly positioning of the door aluminum plate and the anti-collision beam. At this time, the tightening nut on the anti-collision beam and the through hole on the door aluminum plate are aligned and stable. After that, the connection is accurately fixed during the tightening process.

[0021] In some embodiments, the fixture is further provided with flange guides, and multiple flange guides are distributed around the aluminum panel of the door. The method further includes:

[0022] When the door aluminum panel is covered on top of the anti-collision beam, the outer edge of the door aluminum panel is made to fit against one side of the flange guide.

[0023] Through the above technical solution, when the aluminum door panel is fastened, the flange guide fits the outer edge of the aluminum door panel with the flange guide, so that the flange guide can effectively guide and position the aluminum door panel, ensuring that the through holes on the aluminum door panel are accurately aligned with the tightening nuts on the anti-collision beam, and the structure is reliable.

[0024] In some embodiments, the clamp is further provided with positioning supports, and multiple positioning supports are distributed around the aluminum panel of the door. The method further includes:

[0025] After the flip positioning pin is flipped into place, the flip positioning pin is inserted into the positioning pin hole of the door aluminum plate, so that the door aluminum plate is pressed against the top of the positioning support.

[0026] Through the above technical solution, the positioning support set on the fixture plays a positioning role for the anti-collision beam. When the anti-collision beam is placed in the fixture, when the flip positioning pin is flipped into place, the anti-collision beam and the positioning support are pressed together, ensuring that the structure is stable and the connection is precise during the subsequent tightening and connection process of the anti-collision beam and the aluminum panel of the car door.

[0027] In some embodiments, the side of the flange guide that is in contact with the aluminum panel of the door is set as a slope at the top end.

[0028] The aforementioned technical solution, with its beveled surface, makes it easier to snap on the aluminum door panel and improves the positioning accuracy of the aluminum door panel.

[0029] In some embodiments, the connector includes a tightening nut and a tightening screw, the tightening nut being connected to the anti-collision beam and the tightening screw being connected to the tightening nut through a through hole in the door aluminum panel.

[0030] The above technical solution effectively connects the door aluminum panel and the anti-collision beam by tightening the nut and tightening screw, and the connection structure is simple and the connection is stable.

[0031] In some embodiments, the anti-collision beam is provided with multiple positioning support surfaces, and the method further includes: after the positioning pin hole of the anti-collision beam is inserted into the positioning pin on the fixture, the positioning support surface is located on the support member of the fixture.

[0032] The above technical solution enables convenient and reliable positioning of the anti-collision beam on the fixture, and ensures quick and easy connection of the anti-collision beam.

[0033] The beneficial effects of the technical solution provided in this application include:

[0034] This application provides a method for controlling the connection between a car door aluminum panel and a crash beam. Since the car door aluminum panel is made of aluminum sheet, its rigidity is relatively poor. When using threads to tighten the connection between the car door aluminum panel and the crash beam, dimensional deviations are prone to occur. Therefore, the method first tightens the car door aluminum panel and the crash beam with a first torque, then completes the edge-wrapping process on the car door aluminum panel to enhance its rigidity, and finally uses a second torque to continue tightening the car door aluminum panel and the crash beam. This effectively reduces the deformation of the car door aluminum panel, ensures the dimensional accuracy of the car door aluminum panel, ensures the quality of automobile production, and the connection control method is reliable and easy to operate. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the assembly structure of the door aluminum panel and anti-collision beam provided in the embodiments of this application;

[0038] Figure 3 This is a schematic diagram of the anti-collision beam structure provided in an embodiment of this application;

[0039] Figure 4 A structural schematic diagram of the door aluminum panel, anti-collision beam, and connecting parts provided in an embodiment of this application;

[0040] Figure 5 A partial structural schematic diagram illustrating the flip-positioning pin provided in an embodiment of this application;

[0041] Figure label:

[0042] 1. Door aluminum panel; 10. Through hole; 11. Door aluminum panel positioning pin hole; 2. Anti-collision beam; 20. Positioning support surface; 3. Fixture; 4. Anti-collision beam positioning pin hole; 5. Positioning pin; 60. Tightening nut; 61. Tightening screw; 7. Flip positioning pin; 70. Manual flip operation handle; 8. Flipping guide; 80. Inclined surface; 9. Positioning support. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] This application provides a method for controlling the connection between a car door aluminum panel and a crash beam, which solves the problem of dimensional deviations easily occurring during connection due to the poor rigidity of the aluminum panel. The car door aluminum panel 1 includes, but is not limited to, the inner and outer panels of the car door. Made of aluminum, the panel 1 is lightweight and has excellent corrosion resistance, and its widespread application not only improves vehicle performance (e.g., reducing vehicle weight, improving driving stability and comfort) but also promotes the development of the aluminum industry, boosting employment and economic growth. The crash beam 2 is an important passive safety device for automobiles, used to absorb and mitigate external impacts and protect the front and rear of the vehicle body. In this application, the car door aluminum panel 1 and the crash beam 2 are connected by threaded tightening, and the connection is completed using a clamping fixture 3 assembly for automobile production, simultaneously aided by a torque gun. The clamping fixture 3 is a device used in automobile production to fix and position components for processing and assembly; the torque gun is a tool that can set the torque and maintain a stable torque when tightening bolts. The torque gun has an automatic torque control function and mainly consists of a main unit and a controller. The main unit typically uses a double-insulated single-phase series-wound motor and a reduction gear mechanism. In use, the torque gun's plug is connected to the bolt or nut; then, the torque gun's motor begins to rotate; simultaneously, the internal electronic control system monitors the torque applied by the plug and compares it to the set target torque; when the applied torque reaches the target torque, the electronic control system automatically stops the motor's rotation; finally, the torque gun sends a signal to the operator via a sensor or indicator light, indicating that tightening is complete or further operation is required.

[0045] In this application, due to the poor rigidity of the aluminum plate, it is pulled by the anti-collision beam 2 after being tightened, and the local deformation affects the flange surface size, resulting in the door surface difference being too low or too high and the stability being difficult to guarantee, which affects the perceived dimensional quality of the front door and front fender, front door and rear door, and rear door and rear side panel of the entire vehicle.

[0046] See Figures 1 to 5 As shown, this application embodiment provides a method for controlling the connection between a door aluminum panel 1 and a crash beam 2, including the following steps:

[0047] After the aluminum door panel 1 and the anti-collision beam 2 are positioned on the fixture 3, the connecting parts between the aluminum door panel 1 and the anti-collision beam 2 are tightened with a first torque; an edge-wrapping process is performed on the aluminum door panel 1; on the aluminum door panel 1 after the edge-wrapping process is completed, a second torque is used to continue tightening the connecting parts between the aluminum door panel 1 and the anti-collision beam 2, and the second torque is greater than the first torque.

[0048] In this application, the first torque is mainly used to pre-connect the aluminum door panel 1 and the anti-collision beam 2, so that the aluminum door panel 1 and the anti-collision beam 2 cannot be directly separated. Then, the edge-wrapping process is carried out on the aluminum door panel 1. After the edge-wrapping process is completed, the strength of the aluminum door panel 1 increases. Finally, the second torque is used to tighten the connecting parts. At this time, the aluminum door panel 1 and the anti-collision beam 2 are firmly connected. The aluminum door panel 1 after edge-wrapping is not easy to deform, thereby reducing the possibility of dimensional deviation of the aluminum door panel 1 and ensuring the perceived dimensional quality of the front door and front fender, front door and rear door, and rear door and rear side panel of the vehicle side.

[0049] In this application, the edge-wrapping process is a crucial step in automobile manufacturing. It primarily involves wrapping the edges of the car door. Based on the size and shape of the car door, an edge-wrapping strip of appropriate length is cut, with the strip slightly longer than the door edge to allow for sufficient adjustment during the wrapping process. Then, a suitable amount of adhesive is applied to the inside of the door edge and the edge-wrapping strip. The adhesive-coated strip is then adhered to the door edge. During this process, care should be taken to maintain the flatness and tightness of the edge-wrapping strip, avoiding air bubbles or wrinkles. Simultaneously, a heat gun or similar tool is used to heat the edge-wrapping strip, ensuring better adhesion to the door surface. Finally, after the edge-wrapping strip is applied, adjustments and trimming are necessary. Therefore, the strength of the aluminum door panel 1 increases after the edge-wrapping is completed.

[0050] In this application, the connection control method between the door aluminum panel 1 and the anti-collision beam 2 also includes completing an electrophoretic coating process on the door aluminum panel 1. The electrophoretic coating process is completed before the door aluminum panel 1 and the anti-collision beam 2 are tightened with a second torque, thereby further improving the strength of the door aluminum panel 1.

[0051] The electrophoretic coating process uses an external electric field to cause pigments and resin particles suspended in the electrophoretic solution to migrate in a directional manner and deposit on the substrate surface of one of the electrodes. Then, the aluminum panel 1 of the car door is coated. The coated aluminum panel 1 has high strength and good resistance to deformation.

[0052] In this application, the first torque used is between 1.5Nm and 2.5Nm, preferably 2Nm. Specifically, it is controlled by the worker using a torque gun, which is convenient to operate. The torque of 2Nm is relatively small, which has a small impact on the aluminum panel 1 of the car door and does not easily cause deformation of the aluminum panel 1 of the car door, making it reliable in use.

[0053] In this application, the second torque used is between 7.5 Nm and 8.5 Nm, preferably 8 Nm. After repeated tests, it was determined that a torque of 8 Nm is sufficient to tighten the connecting parts and will not affect the aluminum panel 1 of the car door, making it reliable in use.

[0054] This application employs a torque of 8 Nm. A 2 Nm torque ensures the aluminum door panel 1 and the anti-collision beam 2 are securely fastened without loosening, preventing deformation of the aluminum door panel 1 due to excessive tension and thus affecting its dimensions. The 8 Nm torque tightens the connection between the aluminum door panel 1 and the anti-collision beam 2, ensuring that the aluminum door panel 1 is not deformed by the anti-collision beam 2 even under high torque tightening, thus guaranteeing that the dimensions of the aluminum door panel 1 are not affected by the tensioning of the anti-collision beam 2. Batch implementation verification shows that under the new tightening method, the surface difference in the connection area between the aluminum door panel 1 and the anti-collision beam 2 is effectively controlled. A specific torque ensures a reliable connection without causing deformation of the aluminum door panel 1 due to excessive tightening force. Utilizing the characteristics of the manufacturing process, the aluminum door panel 1 is fully tightened only after its rigidity is improved during final assembly, eliminating the impact of the anti-collision beam 2's welding and tightening on the dimensions of the aluminum door panel 1, thereby ensuring the stable conformity of the aluminum door panel 1's dimensions.

[0055] In this application, the aluminum door panel 1 and the anti-collision beam 2 are positioned on the clamp 3, specifically including the following steps:

[0056] Insert the anti-collision beam positioning pin hole 4 on the anti-collision beam 2 into the positioning pin 5 on the clamp 3, so that the anti-collision beam 2 is first positioned on the clamp 3; then, cover the top of the anti-collision beam 2 with the door aluminum plate 1, and align the tightening nut 60 on the anti-collision beam 2 with the through hole 10 on the door aluminum plate 1; finally, flip the flip positioning pin 75 on the clamp 3 into place, so that the flip positioning pin 75 is inserted into the door aluminum plate positioning pin hole 11 on the door aluminum plate 1, at which point the door aluminum plate 1 is securely positioned and covered on the top of the anti-collision beam 2. Then, use a torque gun to tighten the connector, effectively completing the assembly connection between the door aluminum plate 1 and the anti-collision beam 2. The operation steps are convenient and the installation is easy.

[0057] In this application, the flip positioning pin 75 mainly includes an open state and a closed state. When the flip positioning pin 75 is in the open state, it is away from the aluminum door panel 1. When the flip positioning pin 75 is in the closed state, the aluminum door panel 1 is pressed against the top of the anti-collision beam 2. The clamp 3 is also equipped with a manual flipping operation handle 70, which is connected to one side of the flip positioning pin 75. The flip positioning pin 75 is rotatably connected to the clamp 3, making it convenient to use and operate.

[0058] In this application, the fixture 3 is further provided with a flange guide 8. Multiple flange guides 8 are distributed around the aluminum door panel 1. The connection control method between the aluminum door panel and the anti-collision beam further includes: when the aluminum door panel 1 is fastened on the top of the anti-collision beam 2, the outer edge of the aluminum door panel 1 is made to fit against one side of the flange guide 8. In this application, the flange guide 8 is set in the form of a column. When the aluminum door panel 1 is fastened on the top of the anti-collision beam 2, the outer edge of the aluminum door panel 1 fits against one side of the flange guide 8, thereby playing a positioning and guiding role for the aluminum door panel 1. This ensures that when the aluminum door panel 1 is fastened on the top of the anti-collision beam 2, the tightening nut 60 on the anti-collision beam 2 and the through hole 10 on the aluminum door panel 1 are aligned, improving the convenience of positioning and assembling the aluminum door panel 1 and the anti-collision beam 2. Additionally, a slope 80 is provided at the top end of the side of the flange guide 8 that is in contact with the aluminum panel 1 of the door. The slope 80 reduces the collision between the aluminum panel 1 of the door and the flange guide 8 when the aluminum panel 1 of the door is placed.

[0059] In this application, the fixture 3 is also provided with positioning supports 9. Multiple positioning supports 9 are distributed around the aluminum door panel 1. The connection control method between the aluminum door panel and the anti-collision beam also includes: after the flip positioning pin 7 is flipped into place, the flip positioning pin 7 is inserted into the positioning pin hole 11 of the aluminum door panel, so that the top of the aluminum door panel 1 and the positioning support 9 are pressed together. After the position of the aluminum door panel 1 on the anti-collision beam 2 is determined, the top of the aluminum door panel 1 and the positioning support 9 are pressed together. At this time, the positions of the aluminum door panel 1 and the anti-collision beam 2 are relatively fixed. Under the action of the positioning support 9, the aluminum door panel 1 and the anti-collision beam 2 are supported stably during the tightening process, ensuring the tightening connection accuracy.

[0060] Multiple positioning support surfaces 20 are also provided on the anti-collision beam 2. The connection control method between the door aluminum plate and the anti-collision beam also includes: after the anti-collision beam positioning pin hole 4 is inserted into the positioning pin 5 on the clamp 3, the positioning support surface 20 is located on the support of the clamp 3. At this time, the positioning support surface 20 is in contact with the support on the clamp 3, thereby further providing support and positioning for the anti-collision beam 2, making it convenient to position the anti-collision beam 2 on the clamp 3, and the structure is reliable when the connection is tightened.

[0061] In this application, the connector includes a tightening nut 60 and a tightening screw 61. The tightening nut 60 is connected to the anti-collision beam 2, and the tightening screw 61 passes through the through hole 10 on the aluminum panel 1 of the car door and is connected to the tightening nut 60. The tightening nut 60 and the tightening screw 61 have a simple structure and a wide range of applications.

[0062] The implementation principle of this application embodiment is as follows: When assembling the anti-collision beam 2 on the welded aluminum door panel 1, the anti-collision beam 2 is positioned on the clamp 3, and then the aluminum door panel 1 is fastened onto the top of the anti-collision beam 2. At this time, the aluminum door panel 1 and the anti-collision beam 2 are relatively fixed on the clamp 3. The worker first uses a torque of 2Nm to connect the tightening screw 61 and the tightening nut 60 to ensure that the aluminum door panel 1 and the anti-collision beam 2 are firmly fixed without loosening, thus avoiding deformation of the aluminum door panel 1 caused by large pulling force, which would affect the size of the aluminum door panel 1. Then, the aluminum door panel 1 is edge-wrapped. The process and electrophoretic coating effectively increase the strength of the aluminum panel 1 of the car door. Finally, a torque of 8 Nm is used to tighten the aluminum panel 1 of the car door and the anti-collision beam 2, so that the aluminum panel 1 of the car door is not deformed by the anti-collision beam 2 when tightened with a high torque. This ensures that the size of the aluminum panel 1 of the car door is not affected by the tightening and pulling of the anti-collision beam 2. After batch implementation and verification, under the new tightening method, the surface difference of the connection area between the aluminum panel 1 of the car door and the anti-collision beam 2 is effectively controlled, ensuring the size of the side door aluminum panel 1. The assembly of the aluminum panel 1 of the car door and the anti-collision beam 2 is completed, and the installation dimensional accuracy is reliable.

[0063] In the description of this application, it should be noted that the terms "upper," "lower," 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 application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0064] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for controlling connection of an aluminum panel of a vehicle door to a bumper beam, characterized by, The method comprises the following steps: After the aluminum plate (1) and the bumper beam (2) are positioned on the clamp (3), a first torque is used to tighten the connecting piece between the aluminum plate (1) and the bumper beam (2), wherein the aluminum plate (1) and the bumper beam (2) are positioned on the clamp (3), and the method comprises the following steps: The bumper beam positioning pin hole (4) on the bumper beam (2) is inserted into the positioning pin (5) on the clamp (3); The aluminum plate (1) is buckled on the top of the bumper beam (2), and the tightening nut (60) on the bumper beam (2) is aligned with the through hole (10) on the aluminum plate (1); The flip positioning pin (7) on the clamp (3) is flipped into position, so that the flip positioning pin (7) is inserted into the aluminum plate positioning pin hole (11) on the aluminum plate (1); An edge covering process is performed on the aluminum plate (1), which comprises the following steps: according to the size and shape of the door, an edge covering strip is cut, and the length of the edge covering strip should be slightly longer than the length of the door edge; then glue is applied to the inner side of the door edge and the edge covering strip, and the edge covering strip is attached to the door edge; the edge covering strip is heated using a hot air gun; finally, after the edge covering strip is attached, adjustment and trimming are performed; After the edge covering process is completed, a second torque is used to continue tightening the connecting piece between the aluminum plate (1) and the bumper beam (2), and the second torque is greater than the first torque; the first torque used is between 1.5 Nm and 2.5 Nm; the second torque used is between 7.5 Nm and 8.5 Nm.

2. The method of claim 1, wherein the method further comprises: The method also comprises completing an electrophoretic coating process on the aluminum plate (1).

3. The method of claim 1, wherein the method further comprises: determining whether the vehicle is in a collision; and if the vehicle is in a collision, controlling the vehicle door to open. The clamp (3) is also provided with a flanging guide (8), and a plurality of flanging guides (8) are distributed around the aluminum plate (1), and the method further comprises: When the aluminum plate (1) is buckled on the top of the bumper beam (2), the outer edge of the aluminum plate (1) is attached to one side of the flanging guide (8).

4. The method of claim 1, wherein: The clamp (3) is also provided with a positioning support (9), and a plurality of positioning supports (9) are distributed around the aluminum plate (1), and the method further comprises: After the flip positioning pin (7) is flipped into position, the flip positioning pin (7) is inserted into the aluminum plate positioning pin hole (11), so that the aluminum plate (1) is pressed tightly against the top of the positioning support (9).

5. The method of claim 3, wherein the method further comprises: determining whether the vehicle is in a collision; and if the vehicle is in a collision, controlling the vehicle door to open. The side of the flanging guide (8) attached to the aluminum plate (1) is provided with an inclined surface (80) at the top end.

6. The method of claim 1, wherein: The connecting piece comprises a tightening nut (60) and a tightening screw (61), the tightening nut (60) is connected to the bumper beam (2), and the tightening screw (61) passes through the through hole (10) on the aluminum plate (1) and is connected to the tightening nut (60).

7. The method for controlling the connection between the aluminum panel of a car door and the anti-collision beam as described in claim 1, characterized in that: The bumper beam (2) is provided with a plurality of positioning support surfaces (20), and the method further comprises: after the bumper beam positioning pin hole (4) is inserted into the positioning pin (5) on the clamp (3), the positioning support surfaces (20) are located on the support of the clamp (3).

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