A large frame plate part auxiliary correction process device

Abstract

The utility model relates to a large -scale frame board part supplementary correction process device belongs to aviation manufacturing sheet metal forming technical field, a large -scale frame board part supplementary correction process device, including convex surface school shape clamping plate and concave surface school shape clamping plate, convex surface school shape clamping plate is used for forming part web face and inboard surface, concave surface school shape clamping plate is used for forming part bending edge area, the utility model has the advantages of: can solve the problem of poor surface quality and low production efficiency when manually correcting large -scale frame board part, on one hand can effectively avoid the knock of bending edge structure and mould, and the obvious reduction of part surface hammering reduces, thereby improving the shape precision, the degree of sticking to mould and surface quality in the part correction process, on the other hand can greatly reduce the manual correction time, and improve the part production efficiency, the present application can provide great reference significance for the subsequent similar large -scale frame board part correction process, has important popularization value.

Description

Technical Field

[0001] This utility model relates to an auxiliary correction process device for large frame plate parts, belonging to the field of sheet metal forming technology in aerospace manufacturing. Background Technology

[0002] With the development of modern aviation industry, the internal structure of aircraft is becoming increasingly complex, with a large number of parts, and the requirements for structural stability are also becoming higher and higher. As one of the important structural components of aircraft, frame plates are mainly connected to the skin and can improve its shear, compression, and tensile stability, thereby playing a role in maintaining the shape of the fuselage and improving the overall structural strength.

[0003] Frame plate parts mainly consist of web surfaces and bent edges. The large frame plate parts described in this invention refer to those with a length greater than 3000 mm, requiring multiple passes of counter-directional bending and heat treatment during the forming process. Currently, frame plate parts are typically corrected manually: the quenched part is placed on a mold and then manually corrected. On the one hand, due to the large size and complex shape of these parts, the torsional deformation during heat treatment is more severe, resulting in poor mold fit during correction and making manual correction difficult, thus leading to a long correction cycle. On the other hand, the bent edge area is prone to collision with the mold, causing scratches on the part surface. Even after sanding with fine sandpaper, surface quality problems remain, sometimes even leading to scrapping, posing a significant challenge to sheet metal correction processes. Utility Model Content

[0004] This utility model relates to an auxiliary correction process device for large frame plate parts, which is used to solve the problems of poor surface quality and low production efficiency caused by traditional manual correction of large frame plate parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary correction process device for large frame plate parts, including a convex correction plate and a concave correction plate; the convex correction plate is used for the web surface and inner side surface of the forming part; the concave correction plate is used for the curved edge area of ​​the forming part.

[0006] Preferably, the outer surface of the convex shaping plate is consistent with the web surface and inner surface of the part to be formed, and other non-forming working surfaces are rounded.

[0007] Preferably, the groove width of the concave shaping plate is greater than the bending edge width of the part, and the distance from the top of the groove to its bottom is greater than the difference between the bending edge length of the part and the material thickness.

[0008] Preferably, the convex-surface correction plate is made of rubber.

[0009] Preferably, the concave correction plate is made of aluminum alloy.

[0010] How to use:

[0011] 1) Before correction, apply oil to the surface of the part, then place it on the mold and fix it with pin holes;

[0012] 2) Use a convex alignment plate to press on the web surface of the part to ensure more accurate part fit and thus shorten the alignment time;

[0013] 3) Observe the flatness and perpendicularity of the parts, and use a concave correction plate to place in the groove of the bent edge of the parts to make final corrections to the bent edge area of ​​the parts until the parts meet the manufacturing requirements.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. It can solve the problems of poor surface quality and low production efficiency when manually correcting large frame plate parts;

[0016] 2. On the one hand, it can effectively avoid collisions between the bent edge structure and the mold, and significantly reduce hammer marks on the surface of the parts, thereby improving the shape accuracy, mold fit and surface quality during the part correction process; on the other hand, it can greatly reduce the manual correction time and improve the production efficiency of parts.

[0017] 3. This invention can provide a great reference for the subsequent correction process of similar large frame plate parts and has important promotional value. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the large frame plate part in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the web surface correction of the part according to an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the convex surface shaping card plate structure in an embodiment of this utility model;

[0021] Figure 4 yes Figure 3 AA section view;

[0022] Figure 5 This is a schematic diagram of the bending edge structure correction of the part according to an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the concave surface shaping card plate structure in an embodiment of this utility model;

[0024] Figure 1-6 In the middle, 1. part; 2. web surface of part; 3. curved area; 4. mold; 5. convex surface straightening plate; 6. concave surface straightening plate. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 The present invention is further described in detail as follows: A large frame plate part auxiliary correction process device includes a convex correction clamp and a concave correction clamp; the convex correction clamp is used to form the web surface and inner surface of the part; the concave correction clamp is used to form the curved edge area of ​​the part. The function of the correction clamp is to assist the manual correction process, thereby improving the surface quality, shape accuracy and production efficiency of the part.

[0026] As a preferred embodiment of this invention, to reduce collisions between parts and correction tools, the convex correction clamp 5 is made of rubber; while when correcting the curved structure, it is necessary to repeatedly strike it with an aluminum hammer. Therefore, the concave correction clamp 6 is made of aluminum alloy with good wear resistance. Aluminum alloy has advantages such as good processing performance, wear resistance, high hardness, and long service life compared to hard plastic materials.

[0027] In a preferred embodiment of this invention, the convex shaping plate 5 is required to be completely identical in shape to the web surface 2 of the frame plate part; in addition, all surfaces of the convex shaping plate 5 are rounded with a radius R transition. This ensures that the web surface 2 of the part is more accurately attached to the mold during the correction process, which facilitates the subsequent correction process of the bent edges and improves the surface quality of the web surface 2 of the part, thereby further shortening the manual correction time.

[0028] The groove width of the concave correction plate 6 should be slightly larger than the bending edge width, and the distance from the top of the groove to the bottom should be slightly larger than the difference between the bending edge length and the material thickness. In addition, all surfaces of the concave correction plate 6 are rounded with a radius R transition. During the correction process, collisions between the bending edge area 3 of the part and the mold 4 are avoided to ensure the surface quality of the bending edge structure of part 1 and the mold fit of the bending edge structure.

[0029] Before calibrating the parts, the following preparations must be made: check that the inner and outer surfaces of the parts, calibration plates, and molds are clean and free of any debris. The specific implementation process is as follows: After the parts are hydroformed...

[0030] (1) Before correction, the surface of part 1 is coated with oil, then placed on mold 4 and fixed with pin holes;

[0031] (2) Use the convex face straightening plate 5 to press on the web surface 2 of the part to perform a straightening operation on the web surface of the part. In the early stage, the convex face straightening plate 5 is used to straighten the beginning of the part one by one to ensure that the end of the part is gradually attached to the mold. During the straightening process, the convex face straightening plate 5 is required to fit the mold as closely as possible, and the repeated edge trimming in the same part should be avoided as much as possible to reduce the amount of straightening until the web surface area of ​​the part is completely attached to the mold.

[0032] (3) Then the concave correction plate 6 corrects the bending area of ​​the part. During the correction process, the flatness and perpendicularity of the part are observed. The concave correction plate 6 is placed at the beginning to the end of the groove of the bending edge 3 to check one by one and correct the non-fitting area of ​​the bending edge one by one. The concave correction plate should fit the bending area of ​​the part and the bending edge of the mold as closely as possible until all the balls of the part are completely fitted to the mold, and finally meet the manufacturing requirements.

Claims

1. An auxiliary correction process device for large frame plate parts, characterized in that: It includes convex and concave forming plates; convex forming plates are used for the web surface and inner side surface of forming parts; concave forming plates are used for the curved edge area of ​​forming parts.

2. The auxiliary correction process device for large frame plate parts according to claim 1, characterized in that: The outer surface of the convex shaping plate is consistent with the web surface and inner surface of the part that need to be shaped, and other non-forming working surfaces are rounded.

3. The auxiliary correction process device for large frame plate parts according to claim 1, characterized in that: The groove width of the concave correction plate is greater than the bending edge width of the part, and the distance from the top of the groove to its bottom is greater than the difference between the bending edge length of the part and the material thickness.

4. The auxiliary correction process device for large frame plate parts according to claim 1, characterized in that: The convex-faced correction plate is made of rubber.

5. The auxiliary correction process device for large frame plate parts according to claim 1, characterized in that: The concave correction plate is made of aluminum alloy.

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