Aluminum alloy ribbed thin-walled assembly-welded side wall plate structure

Abstract

The utility model discloses an aluminium alloy ribbed thin wall assembly welded side wall board structure, it includes aluminium alloy sealed cabin body side wall structure ontology, adopts numerical simulation technique to carry out chain type process simulation analysis of aluminium alloy sealed cabin body side wall structure production and processing, and after the distribution state of the residual stress and deformation of complete product is evaluated quickly, the machining precision of each process of aluminium alloy sealed cabin body side wall structure is satisfied, obtains an aluminium alloy ribbed thin wall assembly welded side wall board structure, and the cooperation between the mode simulation and other structure modes through bending-welding-heat treatment-milling is utilized, thereby the structure stability of the whole maintenance device is better, and secondly, the cooperation between the coupling simulation of thinning and lightening groove through milling and other structure modes is utilized, thereby the stability of the whole device is better, and it is favorable to the possibility of reducing deformation.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled cabin technology, specifically to an aluminum alloy reinforced thin-walled assembled and welded side wall panel structure. Background Technology

[0002] Aluminum alloy reinforced thin-walled assembled and welded side wall panel structure is a key structural component that combines lightweight and high strength. It is widely used in aerospace, shipbuilding and high-end equipment fields. With the rapid development of aerospace technology, the design requirements of large manned cabin structures are increasing. Therefore, there is a need for an aluminum alloy reinforced thin-walled assembled and welded side wall panel structure.

[0003] Although the existing alloy-ribbed thin-walled assembled welded sidewall structure has many advantages, the following problems still exist: In practical applications, due to the inconsistent spacing between the reinforcing ribs formed during milling, micro-cracks may occur, resulting in low structural stability. Secondly, in practical applications, the thickness and height of the reinforcing ribs vary, which can easily cause a certain degree of deformation to the cabin body due to the thickness and height of the reinforcing ribs. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] 1. Technical problems to be solved:

[0006] To address the issues mentioned above, such as the potential for microcracks due to residual stress during the assembly and welding of sidewall panels, resulting in lower structural stability, and the various thicknesses and heights of reinforcing ribs that can cause deformation of the cabin body, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide an aluminum alloy reinforced thin-walled assembled and welded side wall panel structure, which aims to solve the problem of low structural stability caused by microcracks due to residual stress during the assembly and welding of the side wall panel structure in practical applications, and to minimize the deformation of the cabin body caused by the thickness and height of the reinforcing ribs.

[0008] 2. Technical Solution:

[0009] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0010] As a preferred embodiment of the present invention, an aluminum alloy reinforced thin-walled assembled and welded side wall panel structure includes an aluminum alloy sealed cabin side wall structure body. Numerical simulation technology is used to conduct chain process simulation analysis of the production and processing of the aluminum alloy sealed cabin side wall structure. After quickly evaluating the distribution of residual stress and deformation of the complete product, and meeting the processing accuracy of each process of the aluminum alloy sealed cabin side wall structure, an aluminum alloy reinforced thin-walled assembled and welded side wall panel structure is obtained.

[0011] As a preferred embodiment of the aluminum alloy reinforced thin-walled assembled welded side wall panel structure of this utility model, the side wall panel is formed by rolling and bending a single plate.

[0012] As a preferred embodiment of the aluminum alloy reinforced thin-walled assembled welded side wall panel structure of this utility model, the feature is that three arc-shaped side wall panels are connected by a side wall ring through a welding process.

[0013] As a preferred embodiment of the aluminum alloy reinforced thin-walled assembled welded side wall panel structure of this utility model, vacuum heat treatment is used to homogenize the residual stress inside the side wall ring.

[0014] As a preferred embodiment of the aluminum alloy reinforced thin-walled assembled welded side wall panel structure of this utility model, the side wall ring is thinned by milling.

[0015] As a preferred embodiment of the aluminum alloy reinforced thin-walled assembled welded side wall panel structure of this utility model, the light groove is milled again by milling to obtain the sealed cabin side wall structure.

[0016] As a preferred embodiment of the aluminum alloy reinforced thin-walled assembled welded side panel structure of this utility model, numerical simulation technology is used to complete the simulation of the continuous process of rolling bending-welding-heat treatment-milling, and the residual stress and deformation evolution law during the product processing are quickly evaluated by virtual technology.

[0017] 3. Beneficial effects:

[0018] This type of aluminum alloy ribbed thin-walled assembled welded side panel structure utilizes a rolling-welding-heat treatment-milling method, which significantly improves the accuracy of process prediction while reducing the cost of physical trial and error. This facilitates the optimization design of milling allowance based on deformation prediction, reducing excessive material reservation, and thus better maintaining the overall structural stability of the device.

[0019] This type of aluminum alloy reinforced thin-walled assembled welded sidewall panel structure achieves a wall thickness gradient distribution while ensuring sealing accuracy through coupled simulation of milling and thinning with lightening grooves. A digital manufacturing process of "simulation prediction - parameter optimization - accuracy verification" is established, which facilitates better overall stability of the device and helps to reduce the possibility of deformation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of the side wall of an aluminum alloy sealed chamber according to the present invention;

[0022] Figure 2 This utility model relates to a single-piece arc-shaped sidewall panel of an aluminum alloy sealed chamber after roll bending.

[0023] Figure 3 During the processing of the side wall of the aluminum alloy sealed chamber according to this utility model, a welded side wall ring is produced.

[0024] Figure 4 In the process of machining the side wall of the aluminum alloy sealed cabin, a side wall ring of varying thickness is milled to create a thin-walled, welded side wall panel structure with ribbed aluminum alloy.

[0025] Figure 5 During the simulation of the side wall processing of the aluminum alloy sealed cabin structure with aluminum alloy stiffener thin-walled assembly and welding side wall panel of this utility model, the residual stress (a) and deformation cloud diagram (b) of the arc side wall panel are simulated.

[0026] Figure 6 In the simulation process of the side wall processing of the aluminum alloy sealed cabin structure with aluminum alloy stiffener thin wall assembly and welding, the residual stress (a) and deformation cloud map (b) of the side wall ring welding simulation are inherited from the previous process.

[0027] Figure 7 During the simulation of the side wall processing of the aluminum alloy sealed cabin structure with aluminum alloy stiffener thin-walled assembly and welding, the residual stress (a) and deformation cloud diagram (b) of the side wall ring heat treatment simulation analysis were carried out by inheriting the previous process.

[0028] Figure 8During the simulation of the side wall processing of the aluminum alloy sealed cabin structure with aluminum alloy ribbed thin-walled assembly and welding, the residual stress (a) and deformation cloud diagram (b) of the side wall ring milling thinning simulation analysis were carried out by inheriting the previous process.

[0029] Figure 9 In the simulation process of the aluminum alloy ribbed thin-walled assembled and welded side wall panel structure of the present invention, the residual stress (a) and deformation cloud diagram (b) of the milling and cutting light groove simulation analysis of the side wall structure of the sealing chamber are inherited from the previous process.

[0030] The labels in the diagram are as follows: 1. Body of the cabin; 2. Reinforcing rib; 3. Side wall ring. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0033] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to 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 the present invention.

[0034] The term "connection method" should be interpreted broadly. For example, "connection" 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.

[0035] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0036] This utility model provides an overall structural schematic diagram of one embodiment of an aluminum alloy reinforced thin-walled assembled welded sidewall panel structure, including:

[0037] Please see Figures 1-8 This utility model provides a technical solution:

[0038] The aluminum alloy sealed cabin sidewall structure 1 uses numerical simulation technology to conduct chain process simulation analysis of the production and processing of the aluminum alloy sealed cabin sidewall structure. After quickly evaluating the distribution of residual stress and deformation of the complete product, and meeting the processing accuracy of each process of the aluminum alloy sealed cabin sidewall structure, an aluminum alloy ribbed thin-walled assembled and welded sidewall panel structure is obtained. Numerical simulation technology is used to perform roll bending simulation analysis on a single aluminum alloy thick plate to predict the distribution of residual stress and deformation during the roll bending process, ensuring that the single plate is formed into an arc sidewall panel that meets the design requirements. In actual processing, the aluminum alloy thick plate is fed into the roll bending machine and rolled bending is performed according to the simulation-optimized parameters to obtain the arc sidewall panel 2, which facilitates better maintenance of the overall structural stability of the device.

[0039] It is worth noting that, in order to splice the arc-shaped sidewall panels into a sidewall ring using vacuum electron beam welding, specifically, the arc-shaped sidewall panels 2 are formed by rolling and bending a single plate, and the three rolled and bent arc-shaped sidewall panels are spliced ​​into a sidewall ring 3 using vacuum electron beam welding. Before welding, based on the residual stress and deformation data from the rolling and bending simulation, welding process simulation analysis is performed to predict the stress distribution and deformation trend in the heat-affected zone of the weld. During actual welding, vacuum electron beam welding equipment is used to control parameters such as welding speed and power to ensure that the weld quality meets the design requirements.

[0040] Three arc-shaped sidewall panels are connected by a welding process to form a sidewall ring 3. The welded sidewall ring is then subjected to vacuum heat treatment to homogenize the internal residual stress. Through heat treatment simulation analysis, parameters such as heat treatment temperature and time are optimized to ensure that the residual stress is effectively released.

[0041] In actual processing, the sidewall ring is placed in a vacuum heat treatment furnace and processed according to the process parameters optimized by simulation. This is existing technology and will not be elaborated on here.

[0042] Next, in order to thin the sidewall ring, a milling process was used to thin the sidewall ring. Based on the residual stress data after heat treatment, a milling simulation analysis was performed on the sidewall ring to predict the deformation risk during the thinning process and optimize the milling path and parameters.

[0043] In the actual processing, CNC milling machines are used to thin the side wall ring to ensure that the wall thickness is uniform and meets the design requirements. This is existing technology and will not be elaborated on here.

[0044] Meanwhile, in order to better maintain the pressure of the main body 1, specifically, vacuum heat treatment is used to homogenize the residual stress inside the side wall ring, and milling is used to thin the wall thickness of the side wall ring 3. Numerical simulation technology is used to complete the simulation of the continuous process of rolling bending-welding-heat treatment-milling, so as to quickly evaluate the residual stress and deformation evolution law during the product processing.

[0045] Finally, the sealed chamber sidewall structure is obtained. Specifically, the residual stress and deformation evolution law of the sealed chamber sidewall structure are quickly evaluated to meet the processing size requirements, that is, to obtain a better sealed chamber sidewall structure. The light reduction groove is then milled again by milling to obtain the sealed chamber sidewall structure.

[0046] During actual processing, key parameters (such as temperature and stress) should be monitored in real time to ensure consistency with simulation conditions. For large thin-walled cabins (diameter > 3m), special attention should be paid to support and fixation during processing to avoid additional deformation. This is existing technology and will not be elaborated on here.

[0047] In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0048] Combination Figures 1-8 The specific usage process of the aluminum alloy reinforced thin-walled assembled and welded side wall panel structure of this embodiment is as follows:

[0049] Workers use milling to roll and bend a single plate into an arc-shaped side wall panel. Then, three arc-shaped side wall panels are connected by welding with a side ring 3. Subsequently, vacuum heat treatment is used to homogenize the residual stress inside the side ring 3. At the same time, the wall thickness of the side ring 3 is reduced by milling, and then a light-reducing groove is milled again to obtain the sealed cabin side wall structure. This makes it easier to obtain a suitable cabin side wall, which facilitates better maintenance of the structural stability of the cabin body 1 and helps to reduce the possibility of deformation.

[0050] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A thin-walled, welded sidewall panel structure with reinforcing ribs made of aluminum alloy, characterized in that, The structure includes an aluminum alloy sealed cabin side wall structure body (1), which is composed of a side wall ring (3) formed by welding three arc side wall panels (2). The arc side wall panels (2) are arc plates formed by rolling and bending a single plate. The side wall ring (3) is provided with a light-reducing groove formed by milling after vacuum heat treatment and milling.

2. The aluminum alloy reinforced thin-walled assembled welded sidewall panel structure according to claim 1, characterized in that, The arc-shaped sidewall panel (2) consists of three pieces, which are spliced ​​together circumferentially to form a cylindrical sidewall ring (3).

3. The aluminum alloy reinforced thin-walled assembled welded sidewall panel structure according to claim 2, characterized in that, The wall thickness of the side wall ring (3) is uniformly reduced by milling.

4. The aluminum alloy reinforced thin-walled assembled welded sidewall panel structure according to claim 3, characterized in that, The light-reducing grooves are multiple and are distributed circumferentially along the inner wall of the side wall ring (3).

5. The aluminum alloy reinforced thin-walled assembled welded sidewall panel structure according to claim 4, characterized in that, The arc-shaped sidewall panel (2) is connected by vacuum electron beam welding.

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