Shape correcting device and shape correcting method for thin-wall titanium alloy welded T-shaped profile component

Abstract

The invention provides a shape correcting device and a shape correcting method for a thin-wall titanium alloy welded T-shaped profile component. The shape correcting device and the shape correcting method are used for correcting the shape of the T-shaped profile component. The shape correcting device comprises a shape correcting tool, the periphery of the shape correcting tool is provided with a groove, the groove sequentially comprises a first insertion opening, a second insertion opening and a groove opening, and the first insertion opening and the second insertion opening are in a T shape; the roll bending machine comprises an upper roll wheel, a lower roll wheel and a support, the upper roll wheel is rotationally connected with the support, the height of the upper roll wheel on the support is adjustable, the lower roll wheel is rotationally connected with the support, and the height of the lower roll wheel on the support is adjustable; the mounting part is arranged on the shape correcting tool and is used for being connected with the upper roller; and the T-shaped profile component is arranged in the groove and is corrected under the rolling action of the upper roller and the lower roller. And the T-shaped profile component extends into the groove, and the roll bending machine applies force to the shape correcting tool to correct the shape of the T-shaped profile component. Due to the fact that the height of the upper roller and the height of the lower roller are adjustable, the straight profile can be corrected, and the positions of the upper roller and the lower roller can be adjusted according to the bending condition of the profile so that the bent profile can be corrected.

Description

Technical Field

[0001] The present invention relates to the technical field of titanium alloy orthopedic technology, and in particular, to a straightening device and a straightening method for a thin-walled titanium alloy welded T-shaped profile member. Background Art

[0002] Titanium alloys are widely used in the fields of aerospace, ships, vehicles, etc. due to their light weight and high strength. With the development of structural components in various fields towards large-scale, the usage of thin-walled titanium alloy welded T-shaped profile members is increasing continuously, and the specifications are getting larger and larger (the length reaches more than 4m). The T-shaped profile is usually welded by two components, namely a web and a panel. Due to the influence of heat input during the welding process, the straightness and perpendicularity of the welded T-shaped profile member are often poor and need to be straightened before use. Straightness refers to the flatness of the T-shaped profile along its length direction (usually referring to the longitudinal axis of the web or the panel), that is, whether the profile has bending, twisting or wavy deformation. Perpendicularity refers to whether the included angle between the web and the panel of the T-shaped profile strictly maintains 90°, that is, whether the intersection line between the two is inclined or offset.

[0003] Titanium alloys have poor plastic properties at room temperature and are difficult to cold-deform. Therefore, the straightening of titanium alloy T-shaped profile members mostly uses flame heating correction. The principle of this method is to heat the stretched and deformed part of the T-shaped profile to cause irreversible compressive deformation, so as to achieve the purpose of straightening. However, it is found in the actual operation process that this method has the following problems: 1) For thin-walled T-shaped profiles, the heat of the flame will quickly pass through the T-shaped profile, resulting in a small temperature difference between the upper and lower surfaces, leading to poor straightening effect; 2) The flame correction process mostly depends on the experience of the operator, and it is necessary for him to confirm the heating temperature according to different deformation conditions and formulate the layout plan of the flame paths; 3) For large-scale T-shaped profile members, the flame straightening process lasts for a long time, requires long-term heating, consumes a large amount of manpower and material resources, and is not suitable for the straightening of large-scale T-shaped profile members. To sum up, the current flame correction method has problems of poor straightening effect, strong dependence on personnel, and low efficiency when straightening thin-walled titanium alloy welded T-shaped profile members.

[0004] Chinese Patent CN107335695B discloses a T-shaped profile mechanical rolling correction device and a correction method, which utilize the gaps between the upper and lower rows of rollers and the roller rings on the rollers to realize the function of precise mechanical correction of the T-shaped truss. The upper roller rings form a first upper roller ring and a second upper roller ring, and the lower roller rings form a first lower roller ring, a second lower roller ring and a third lower roller ring. A first longitudinal processing gap is formed between the first upper roller ring and the second upper roller ring; a second longitudinal processing gap is formed between the first lower roller ring and the second lower roller ring; a third longitudinal processing gap is formed between the second lower roller ring and the third lower roller ring. The mechanical correction structure designed in this patent application can only straighten straight profiles and does not consider the situation of bent profiles, so it has limitations in use. Summary of the Invention

[0005] In view of this, the present invention aims to provide a straightening device and a straightening method for thin-walled titanium alloy welded T-shaped profile members, so as to solve the problem that the existing straightening device is limited in use and can only straighten straight profiles.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows:

[0007] On the one hand, the present invention provides a straightening device for thin-walled titanium alloy welded T-shaped profile members, which is used to straighten the T-shaped profile members. The straightening device includes:

[0008] A straightening tooling, with a groove provided on its outer periphery. The groove sequentially includes a first insertion port, a second insertion port, and a slot opening. The slot opening is provided on the outer surface of the straightening tooling, and the first insertion port and the second insertion port are in a T shape;

[0009] A roll bending machine, including an upper roll, a lower roll, and a bracket. The upper roll is rotatably connected to the bracket and its height on the bracket is adjustable. The lower roll is rotatably connected to the bracket and its height on the bracket is adjustable;

[0010] And a mounting part, which is arranged on the straightening tooling and used to connect with the upper roll.

[0011] The T-shaped profile member is placed in the groove and is straightened under the rolling pressure of the upper roll and the lower roll. The T-shaped profile member extends into the groove, and the roll bending machine applies force to the straightening tooling to straighten the T-shaped profile member. Since the heights of the upper and lower rolls are adjustable, not only can straight profiles be straightened, but also the positions of the upper and lower rolls can be adjusted according to the bending condition of the profile to straighten the bent profile.

[0012] Furthermore, the T-shaped profile member includes a panel and a web. The T-shaped profile member extends into the groove through the slot opening, and the web is placed in the first insertion port and matches with the first insertion port, and the panel is placed in the second insertion port and matches with the second insertion port. The first insertion port is used to correct the straightness of the web, the second insertion port is used to correct the straightness of the panel, and the connection part of the first insertion port and the second insertion port is used to correct the perpendicularity of the T-shaped profile member. The straightening device of the present application has a simple structure and higher straightening accuracy. The straightness deviation can be controlled within the range of 2.0 mm / m, and the perpendicularity deviation can be controlled within the range of 0.5 mm.

[0013] Further, the size a of the groove = the thickness of the T-shaped profile member + perpendicularity, the size b = the height of the T-shaped profile member (including the thickness of the panel), the size c = the width of the panel of the T-shaped profile member, and the size d = the cross-sectional width of the shape correction tooling. The size of the shape correction tooling is reasonably determined according to the size of the T-shaped profile member, making the shape correction tooling more adaptable to the T-shaped profile member, thereby improving the shape correction accuracy.

[0014] Further, a first chamfer α is provided at the connection of the first insertion port and the second insertion port, and α = 40 - 48°. The purpose of setting the first chamfer α is to reserve space for the weld between the panel and the web, avoiding the risk of cracking caused by squeezing the weld during shape correction.

[0015] Further, a second chamfer β is provided at the connection of the second insertion port and the notch, and β = 40 - 48°. The purpose of setting the second chamfer β is to facilitate the sliding in or out of the T-shaped profile member.

[0016] Further, the installation part is connected to the upper roller. During shape correction, the T-shaped profile member is located between the upper roller and the lower roller. The lower roller is used to drive the T-shaped profile member to move along the length direction, thereby ensuring that all parts of the T-shaped profile member in the length direction are shape-corrected. The upper roller is used to apply force by rolling on the T-shaped profile member for shape correction.

[0017] Further, the shape correction tooling is in a circular ring shape. The installation part is a through hole provided on the inner side of the shape correction tooling and is sleeved on the outer side of the upper roller. The groove is provided on the outer side of the shape correction tooling to facilitate the sliding in or out of the T-shaped profile member into or out of the groove.

[0018] Further, two lower rollers are provided, and the upper roller and the two lower rollers are arranged in a triangular pattern. The two lower rollers can prevent the T-shaped profile member from tilting when placed on the lower rollers, which is beneficial to the accuracy of shape correction.

[0019] Another invention, the present invention also proposes a method for shape correction of a thin-walled titanium alloy welded T-shaped profile member, using the above-mentioned shape correction device. The shape correction method includes the following steps:

[0020] S1. Determine the size of the shape correction tooling according to the specifications of the T-shaped profile member;

[0021] S2. Connect the shape correction tooling to the upper roller through the installation part, drive the T-shaped profile member into the shape correction tooling, ensure that the web is placed in the first insertion port and the panel is placed in the second insertion port, adjust the position of the lower roller so that the T-shaped profile member is located between the upper roller and the lower roller, and the upper roller applies force by rolling to ensure uniform force on the T-shaped profile member and prevent distortion of the T-shaped profile member;

[0022] S3. Start the upper and lower rollers. The lower roller rotates and drives the T-shaped profile member to move along the length direction. The upper roller rotates and drives the straightening tooling to rotate, and performs roll straightening on the T-shaped profile member.

[0023] Compared with the prior art, the straightening device and method for the thin-walled titanium alloy welded T-shaped profile member of the present invention have the following advantages:

[0024] 1. The straightening device of the present application performs mechanical straightening on the T-shaped profile member by means of mechanical equipment such as a roll bending machine. While meeting the accuracy requirements, the straightening efficiency is significantly improved. The perpendicularity deviation can be controlled within 0.5 mm, and the straightness deviation can be controlled within 2.0 mm / m.

[0025] 2. The present application is applicable to various straight profiles and bent profiles, expanding the scope of use.

[0026] 3. The straightening device of the present application can be applied to the straightening of profiles such as L-shaped and U-shaped by adjusting the design of the cross-sectional shape. Description of the Drawings

[0027] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0028] Figure 1 is a schematic structural diagram of the straightening device of the present invention;

[0029] Figure 2 is a cross-sectional view of the straightening device of the present invention;

[0030] Figure 3 is a schematic diagram of the straightening device of the present invention for correcting the T-shaped profile member;

[0031] Figure 4 is Figure 1 a cross-sectional view of.

[0032] Description of the Reference Numerals:

[0033] 1. Straightening tooling; 2. Installation part; 3. Groove; 4. First blocking part; 5. Second blocking part; 6. First insertion opening; 7. Second insertion opening; 8. Notch; 9. Web; 10. Panel; 11. Upper roller; 12. Lower roller; 13. Bracket. Detailed Embodiments

[0034] The present invention will be further described below in conjunction with specific embodiments. First of all, it should be noted that the data in the following experimental examples were obtained by the inventor through a large number of experiments. Due to space limitations, only a part of them is shown in the specification, and those of ordinary skill in the art can understand and implement the present invention based on this data. These embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these changes or modifications also fall within the scope protected by this application.

[0035] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] As Figures 1 to 4 shown, a straightening device for a thin-walled titanium alloy welded T-shaped profile member of the present application is used to straighten the T-shaped profile member. The straightening device includes:

[0038] A straightening tooling 1 with a groove 3 provided on its outer periphery. The groove 3 sequentially includes a first insertion port 6, a second insertion port 7, and a slot opening 8. The slot opening 8 is provided on the outer surface of the straightening tooling 1, and the first insertion port 6 and the second insertion port 7 are in a T shape;

[0039] A roll bending machine, including an upper roll 11, a lower roll 12, and a bracket 13. The upper roll 11 is rotatably connected to the bracket 13 and its height on the bracket 13 is adjustable. The lower roll 12 is rotatably connected to the bracket 13 and its height on the bracket 13 is adjustable;

[0040] And a mounting portion 2 provided on the straightening tooling 1 for connecting to the upper roll 11;

[0041] The T-shaped profile member is placed in the groove 3 and is straightened under the rolling cooperation of the upper roll 11 and the lower roll 12.

[0042] The first insertion port 6 and the second insertion port 7 are used to assist in the straightening of the T-shaped profile member. To ensure the straightness and perpendicularity of the T-shaped profile member, the first insertion port 6 is vertically arranged, the second insertion port 7 is horizontally placed, and the first insertion port 6 and the second insertion port 7 are perpendicular. The T-shaped profile member extends into the groove 3, and the roll bending machine applies force to the straightening tooling 1 to straighten the T-shaped profile member. Since the heights of the upper and lower rolls are adjustable, not only can straight profiles be straightened, but also the positions of the upper and lower rolls can be adjusted according to the bending condition of the profile to straighten bent profiles.

[0043] In this application, a groove 3 adapted to the T-shaped profile member is provided on the shape correction tooling 1. Without making excessive changes to the roll bending machine, when correcting T-shaped profile members of different specifications, only the shape correction tooling 1 needs to be replaced, thus expanding the scope of use.

[0044] The shape correction device of this application is not limited to correcting T-shaped profile members, and can also correct L-shaped, U-shaped and other profile members. Only the shape of the groove 3 needs to be correspondingly set according to the shape of the profile member to be corrected.

[0045] The T-shaped profile member includes a panel 10 and a web 9. The T-shaped profile member extends into the groove 3 through a notch 8, and the web 9 is placed in the first insertion port 6 and cooperates with the first insertion port 6. The panel 10 is placed in the second insertion port 7 and cooperates with the second insertion port 7. The first insertion port 6 is used to correct the straightness of the web 9, the second insertion port 7 is used to correct the straightness of the panel 10, and the connection between the first insertion port 6 and the second insertion port 7 is used to correct the perpendicularity of the T-shaped profile member. The shape correction device of this application has a simple structure and higher shape correction accuracy. The straightness deviation can be controlled within the range of 2.0 mm / m, and the perpendicularity deviation can be controlled within the range of 0.5 mm.

[0046] As Figure 2 shown, the size a of the groove 3 = the thickness of the T-shaped profile member + perpendicularity, the size b = the height of the T-shaped profile member (including the thickness of the panel 10), the size c = the width of the panel 10 of the T-shaped profile member, and the size d = the cross-sectional width of the shape correction tooling 1. The size of the shape correction tooling 1 is reasonably determined by the size of the T-shaped profile member, so that the shape correction tooling 1 is more suitable for the T-shaped profile member, thereby improving the shape correction accuracy.

[0047] As a preferred example of this application, a first chamfer α is provided at the connection between the first insertion port 6 and the second insertion port 7, and α = 40~48°. Further, α = 45°. The purpose of setting the first chamfer α is to reserve space for the weld between the panel 10 and the web 9, and avoid the risk of cracking caused by squeezing the weld during shape correction. In the prior art, only mechanical correction is considered in the design, and no heating space is reserved, which is not suitable for the correction of the titanium alloy welded T-shaped profile of this application.

[0048] As a preferred example of this application, a second chamfer β is provided at the connection between the second insertion port 7 and the notch 8, and β = 40~48°. Further, β = 45°. The purpose of setting the second chamfer β is to facilitate the sliding in or out of the T-shaped profile member.

[0049] As a preferred example of the present application, a first blocking portion 4 is formed at the groove 3 on one side of the shape-correcting tooling 1, and a second blocking portion 5 is formed at the groove 3 on the other side of the shape-correcting tooling 1. The first blocking portion 4 and the second blocking portion 5 can not only ensure the strength of the shape-correcting tooling 1 and prevent deformation during the rolling process, but also facilitate the rolling of the upper roller 11.

[0050] As a preferred example of the present application, the mounting portion 2 is connected to the upper roller 11. During shape correction, the T-shaped profile member is located between the upper roller 11 and the lower roller 12. The lower roller 12 is used to drive the T-shaped profile member to move along the length direction, so as to ensure that all parts of the T-shaped profile member in the length direction are shape-corrected. The upper roller 11 is used to apply a rolling force to the T-shaped profile member for shape correction. Through the cooperation of the upper and lower rollers, shape correction is carried out on the premise of not greatly changing the shape of the T-shaped profile member, ensuring straightness and perpendicularity.

[0051] In order to better cooperate with the upper and lower rollers, the shape-correcting tooling 1 is in an annular shape. The mounting portion 2 is a through hole provided inside the shape-correcting tooling 1 and is sleeved on the outside of the upper roller 11. The groove 3 is provided on the outside of the shape-correcting tooling 1 to facilitate the T-shaped profile member to slide into or out of the groove 3. The mounting portion 2 and the groove 3 are located on different sides of the shape-correcting tooling 1 to avoid mutual interference.

[0052] As a specific example of the present application, the mounting portion 2 and the upper roller 11 are connected by spot welding, which can not only ensure that the upper roller 11 drives the shape-correcting tooling 1 to rotate, but also facilitate the disassembly of the shape-correcting tooling 1 and the upper roller 11. The upper roller 11 is connected to the upper drive shaft and rotates under the drive of the upper drive shaft. The lower roller 12 is connected to the lower drive shaft and rotates under the drive of the lower drive shaft. Since it is prior art that the upper drive shaft drives the upper roller 11 to rotate and the position of the upper roller 11 on the bracket 13 is adjustable, and the lower drive shaft drives the lower roller 12 to rotate and the position of the lower roller 12 on the bracket 13 is adjustable, it will not be elaborated here.

[0053] As a preferred example of the present application, two lower rollers 12 are provided, and the upper roller 11 and the two lower rollers 12 are arranged in a triangular shape. Further, the upper roller 11 is arranged above the lower rollers 12, and the triangle is an isosceles triangle. The two lower rollers 12 can prevent the T-shaped profile member from tilting when placed on the lower rollers 12, and the isosceles triangle arrangement can make the force evenly distributed during shape correction.

[0054] The upper and lower rollers are made of materials with relatively hard texture and high resilience, such as nylon, to reduce the wear on the surface of the T-shaped profile member.

[0055] The shape-correcting method for the thin-walled titanium alloy welded T-shaped profile member of the present application uses the above-mentioned shape-correcting device, and specifically includes the following steps:

[0056] S1. Determine the size of the shape correction tooling 1 according to the specifications of the T-shaped profile member;

[0057] S2. Connect the shape correction tooling 1 to the upper roller 11 through the installation part 2, drive the T-shaped profile member into the shape correction tooling 1, ensure that the web 9 is placed in the first insertion port 6 and the panel 10 is placed in the second insertion port 7, adjust the position of the lower roller 12 so that the T-shaped profile member is located between the upper roller 11 and the lower roller 12, and apply force by rolling the upper roller 11 to ensure uniform stress on the T-shaped profile member and prevent distortion of the T-shaped profile member;

[0058] S3. Start the upper and lower rollers. The lower roller 12 rotates and drives the T-shaped profile member to move along the length direction. The upper roller 11 rotates and drives the shape correction tooling 1 to rotate, and performs rolling shape correction on the T-shaped profile member.

[0059] The T-shaped profile member can reciprocate along the length direction under the action of the lower roller 12. Repeat the shape correction process for the parts with poor effect after multiple rolling shape corrections until the accuracy requirements are met. Flame heating treatment can be carried out for individual parts that are difficult to shape.

[0060] In addition to being able to shape straight profiles, the shape correction device and method of the present application can also shape bent profiles. During the shape correction of straight profiles, tools such as a template and a feeler gauge are used to measure the perpendicularity and straightness deviations. After meeting the requirements, it is regarded as the completion of shape correction, otherwise repeat the shape correction steps. The means of measuring the perpendicularity of bent profiles is the same as that of straight profiles, and the straightness is evaluated by the "reverse straight line method". After both the perpendicularity and straightness meet the requirements, it is regarded as the completion of shape correction, otherwise repeat the shape correction steps. During the shape correction of bent profiles, adjust the positions of the upper and lower rollers according to the bending degree of the T-shaped profile member to avoid affecting the curvature of the bent profile during the shape correction process.

[0061] The shape correction device and method for the thin-walled titanium alloy welded T-shaped profile member of the present application have the following advantages: 1. The shape correction device of the present application uses mechanical equipment such as a roll bending machine to perform mechanical shape correction on the T-shaped profile member, significantly improving the shape correction efficiency while meeting the accuracy requirements. The perpendicularity deviation can be controlled within 0.5 mm, and the straightness deviation can be controlled within 2.0 mm / m; 2. The present application is applicable to various straight profiles and bent profiles, expanding the scope of use; 3. The shape correction device of the present application can be applied to the shape correction of profiles such as L-shaped and U-shaped by adjusting the design of the cross-sectional shape.

[0062] Example 1

[0063] Taking a T-shaped profile member with a total length of 5 m, a web 9 size of 3×40 mm, and a panel 10 size of 5×33 mm as an example, the perpendicularity deviation is required to be ≤0.5 mm, and the straightness deviation is required to be ≤2.0 mm / m.

[0064] The shape correction method for the thin-walled titanium alloy welded T-section member in Embodiment 1 includes the following steps:

[0065] S1. Determine the size of the shape correction tooling 1 according to the specifications of the T-section member;

[0066] Specifically, the size of the shape correction tooling 1 is as follows: a = 3.5 mm, b = 45 mm, c = 33 mm, d = 50 mm, the first chamfer α = 45°, with a size of 5×5 mm, and the second chamfer β = 45°, with a size of 5×5 mm.

[0067] S2. Connect the shape correction tooling 1 to the upper roller 11 through the installation part 2, drive the T-section member into the shape correction tooling 1, ensure that the web 9 extends into the first insertion port 6 and the panel 10 extends into the second insertion port 7, adjust the position of the lower roller 12 so that the T-section member is located between the upper roller 11 and the lower roller 12, and the upper roller 11 applies a rolling force to ensure uniform stress on the T-section member and prevent distortion of the T-section member;

[0068] S3. Start the upper and lower rollers. The lower roller 12 rotates and drives the T-section member to move along the length direction. The upper roller 11 rotates and drives the shape correction tooling 1 to rotate, and performs rolling shape correction on the T-section member. The T-section member can reciprocate under the action of the lower roller 12. Repeat the shape correction process for the parts with poor effect after multiple rolling shape corrections until the accuracy requirements are met.

[0069] Use the shape correction method and flame straightening method of the T-section member in Embodiment 1 to perform shape correction on the T-section member in Embodiment 1 respectively. The comparison results are shown in Table 1.

[0070] Table 1

[0071]

[0072] As can be seen from Table 1, compared with the flame straightening method, using the shape correction device and method in Embodiment 1 not only improves the shape correction accuracy, but also saves time and improves the shape correction efficiency.

[0073] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A shape correction device for a thin-walled titanium alloy welded T-shaped profile member, which is used to correct the shape of the T-shaped profile member, and is characterized in that, The shape correction device includes: A shape correction tooling (1) with a groove (3) provided on its outer periphery. The groove (3) successively includes a first insertion opening (6), a second insertion opening (7), and a notch (8). The notch (8) is provided on the outer surface of the shape correction tooling (1), and the first insertion opening (6) and the second insertion opening (7) are in a T shape. A roll bending machine, including an upper roll (11), a lower roll (12), and a bracket (13). The upper roll (11) is rotatably connected to the bracket (13) and its height on the bracket (13) is adjustable. The lower roll (12) is rotatably connected to the bracket (13) and its height on the bracket (13) is adjustable. And a mounting part (2) provided on the shape correction tooling (1) for connecting to the upper roll (11). The T-shaped profile member is placed in the groove (3) and is shape-corrected under the rolling cooperation of the upper roll (11) and the lower roll (12).

2. The shape correction device according to claim 1, characterized in that, The T-shaped profile member includes a panel (10) and a web (9). The T-shaped profile member extends into the groove (3) through the notch (8), and the web (9) is placed in the first insertion opening (6) and cooperates with the first insertion opening (6), and the panel (10) is placed in the second insertion opening (7) and cooperates with the second insertion opening (7).

3. The shape correction device according to claim 1, characterized in that, The size a of the groove (3) = the thickness of the T-shaped profile member + perpendicularity, the size b = the height of the T-shaped profile member, the height of the T-shaped profile member includes the thickness of the panel (10), the size c = the width of the panel (10) of the T-shaped profile member, and the size d = the cross-sectional width of the shape correction tooling (1).

4. The shape correction device according to claim 1, wherein, A first chamfer α is provided at the connection of the first insertion opening (6) and the second insertion opening (7), and α = 40 - 48°.

5. The shape-correcting device according to claim 1, characterized in that, A second chamfer β is provided at the connection of the second insertion opening (7) and the notch (8), and β = 40 - 48°.

6. The shape correction device according to claim 1, wherein The mounting part (2) is connected to the upper roll (11). During shape correction, the T-shaped profile member is located between the upper roll (11) and the lower roll (12).

7. The shape correction device according to claim 1, characterized in that, The shape correction tooling (1) is in an annular shape. The mounting part (2) is a through hole provided on the inner side of the shape correction tooling (1) and is sleeved on the outer side of the upper roll (11). The groove (3) is provided on the outer side of the shape correction tooling (1) to facilitate the T-shaped profile member to slide into or out of the groove (3).

8. The shape correction device according to claim 1, characterized in that Two lower rolls (12) are provided, and the upper roll (11) and the two lower rolls (12) are arranged in a triangular pattern.

9. A method for straightening a thin-walled titanium alloy welded T-shaped section member, characterized in that, Using the shape correction device described in any one of claims 1 - 8 above, the shape correction method includes the following steps: S1. Determine the size of the shape correction tooling (1) according to the specifications of the T-shaped profile member. S2. Connect the shape correction tooling (1) to the upper roll (11) through the mounting part (2), drive the T-shaped profile member into the shape correction tooling (1), ensure that the web (9) is placed in the first insertion opening (6) and the panel (10) is placed in the second insertion opening (7), adjust the position of the lower roll (12) so that the T-shaped profile member is located between the upper roll (11) and the lower roll (12), and apply a rolling force with the upper roll (11) to ensure uniform force on the T-shaped profile member and prevent distortion of the T-shaped profile member. S3. Start the upper and lower rollers. The lower roller (12) rotates and drives the T-shaped profile member to move along the length direction. The upper roller (11) rotates and drives the straightening tooling (1) to rotate, and performs roll straightening on the T-shaped profile member.

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