Skin rolling rib forming device applied to airplane

Abstract

The utility model provides a skin rolling rib forming device applied to an airplane. The skin rolling rib forming device comprises a rectangular structural framework, a forming female die used for supporting a skin and a forming wheel module used for extrusion forming of the skin. The forming female die is arranged on the bottom edge of the structural framework, and the forming wheel module is arranged in the structural framework in the mode that the forming wheel module can move up and down along the side edge. The structural framework is provided with a position adjusting device for adjusting the edge positions of the rolling ribs and the skin; the structural framework is further provided with a depth adjusting device for adjusting the forming wheel module and the machining depth. The utility model has the beneficial effects that the process innovation is mainly carried out from two aspects, the economical efficiency and the forming quality are emphasized, and different from the high mold cost input of the traditional mold pressing and skin drawing forming scheme and the mold pressing forming integrated forming scheme, the rib rolling process is innovatively used for forming the integrated ultra-light skin part, and the production efficiency is improved. And meanwhile, good skin flatness quality is obtained.

Description

Technical Field

[0001] The utility model relates to the field of aviation manufacturing, in particular to a skin rolling forming device used for aircraft. Background Art

[0002] The fuselage structural design of modern aircraft is a key factor in ensuring flight safety, improving transportation efficiency and reducing operating costs. Traditional fuselage structural designs, including frame type, monocoque type and semi-monocoque type, have been widely used and verified in the field of large passenger aircraft. These designs provide the aircraft with the necessary strength and rigidity to withstand various loads during flight by combining longitudinal elements (such as long stringers and girders) and transverse elements (such as bulkheads) and skins.

[0003] However, with the rapid development of drone technology and the unmanned transport aircraft market, traditional fuselage structure design faces new challenges. The requirements for fuselage structure of aircraft such as unmanned transport aircraft are different from those of manned passenger aircraft. They pay more attention to structural simplification, ease of assembly, and overall weight reduction. This is because simplified structures can reduce manufacturing costs and facilitate rapid production and maintenance; while lightweight structures help improve fuel efficiency and load capacity, thereby enhancing economy.

[0004] The existing aviation standard HB-0-11 reinforcement groove is mainly for sheet metal parts inside the aircraft, and the production process of large structural parts such as skin is not considered enough. Therefore, developing an economical molding process suitable for large integrated ultra-light skin parts is of great significance to promote the development of domestic civil aircraft in the field of unmanned cargo transportation. Utility Model Content

[0005] Aiming at the shortcomings of the existing technology, the problem of low integration of the current device for aircraft skin rolling processing is solved;

[0006] The utility model provides a skin rolling forming device for aircraft, comprising a rectangular structural frame, a forming die for supporting the skin, and a forming wheel module for extrusion forming the skin; the forming die is arranged at the bottom edge of the structural frame, and the forming wheel module can be arranged in the structural frame so as to move up and down along the side edge;

[0007] The structural frame is provided with a position adjustment device for adjusting the position of the rolling ribs and the edge of the skin;

[0008] The structural frame is also provided with a depth adjustment device for adjusting the molding wheel module and the processing depth.

[0009] Furthermore, the position adjustment device is fixedly arranged on the bottom side of the structural frame, and the position adjustment device includes one or more guide rails, and a slidable skin fixing clamp is arranged on the upper end of the guide rail.

[0010] Furthermore, the forming wheel module includes a linear drive device and a forming wheel. Both ends of the linear drive device are slidably arranged on the inner slideway of the side of the structural frame, and the forming wheel is slidably arranged on the linear drive device.

[0011] Furthermore, the depth adjustment device is arranged at the upper end of the forming wheel module, and the depth adjustment device includes a first nut fixed inside the top edge of the structural frame, a screw rod adapted to the nut, a handwheel fixed at the top of the screw rod, and a second nut arranged at the bottom of the screw rod. The second nut is connected to the forming wheel module and has an opposite thread rotation direction to that of the first nut. Rotating the screw rod drives the forming wheel module to move up and down.

[0012] Furthermore, the forming die is fixedly arranged at the upper end of the bottom edge of the structural frame, the forming die is provided with a groove used in conjunction with the forming wheel module, and edge transition dies are fixedly arranged at both ends of the groove.

[0013] As a preferred solution, a cross beam for reinforcement is arranged between adjacent guide rails.

[0014] As a preferred solution, the guide rail is provided with a first scale for measuring the sliding distance of the skin fixing clamp.

[0015] As a preferred solution, a second scale for measuring the feeding distance of the forming wheel module is provided on the inner slideway on the side of the structural frame.

[0016] As a preferred solution, the linear drive device is provided with a third scale for measuring the sliding distance of the forming wheel.

[0017] The beneficial effects of the utility model are:

[0018] This process innovation is mainly carried out from two aspects, focusing on economy and molding quality. Different from the high mold cost investment of traditional compression molding, Monel molding and compression molding one-piece molding solutions, the innovative use of rolling process solves the molding of one-piece ultra-light skin components, while obtaining good skin flatness quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the molding wheel module of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the position adjustment device of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the depth adjustment device of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the forming die of the utility model.

[0025] The reference numerals in the accompanying drawings are:

[0026] 1. Forming wheel module; 2. Position adjustment device; 3. Depth adjustment device; 4. Forming die; 5. Structural frame; 6. Rolled skin; 7. Crossbeam; 9. Guide rail; 11. Skin fixing clamp; 12. First scale; 14. Hand wheel; 15. Screw; 16. First nut; 17. Second nut; 19. Second scale; 22. Linear drive device; 24. Forming wheel; 29. ​​Third scale; 30. Edge transition mold; 32. Groove. DETAILED DESCRIPTION

[0027] To illustrate the features of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0028] Example:

[0029] refer to Figures 1 to 5 The present embodiment provides a skin rolling forming device for aircraft, comprising a rectangular structural frame 5, a forming die 4 for supporting the skin, and a forming wheel module 1 for extrusion forming the skin; the forming die 4 is fixedly arranged at the upper end of the bottom edge of the structural frame 5, and the forming die 4 is provided with a groove 32 used in conjunction with the forming wheel module 1, and edge transition molds 30 are fixedly arranged at both ends of the groove 32.

[0030] The forming wheel module 1 can be arranged in the structural frame 5 so as to move up and down along the side; the forming wheel module 1 includes a linear drive device 22 and a forming wheel 24, the linear drive device 22 adopts an electric screw guide rail, and both ends are slidably arranged on the internal slideway of the side of the structural frame 5, and the forming wheel 24 is slidably arranged on the linear drive device 22.

[0031] The structural frame 5 is provided with a position adjustment device 2 for adjusting the horizontal position of the skin; the position adjustment device 2 is fixedly arranged on the bottom side of the structural frame 5, and the position adjustment device 2 includes three guide rails 9, and a slidable skin fixing clamp 11 is arranged on the upper end of the guide rails 9.

[0032] The structural skeleton 5 is also provided with 5 depth adjustment devices 3 for adjusting the processing depth of the forming wheel module 1; the depth adjustment device 3 is arranged at the upper end of the forming wheel module 1, and the depth adjustment device 3 includes a first nut 16 fixed inside the top edge of the structural skeleton 5, a screw 15 adapted to the nut, a hand wheel 14 fixed to the top of the screw, and a second nut 17 arranged at the bottom of the screw 15, the second nut 17 is connected to the forming wheel module 1 and has a thread rotation direction opposite to that of the first nut 16, and the screw 15 is rotated to drive the forming wheel module 1 to move up and down. The forming wheel module 1 provides power, and the forming wheel 24 acts as a punch, and cooperates with the forming die 4 to extrude the skin. Through the cooperation of various components, various shapes of rolled rib skins 6 can be adapted to improve the forming effect.

[0033] This embodiment has also been adaptively improved according to the usage scenario. First, a cross beam 7 for reinforcement is set between the three guide rails 9 to make the integrity of the position adjustment device 2 more excellent. In addition, a first scale 12 for measuring the sliding distance of the skin fixing clamp 11 is set on the guide rail 9, a second scale 19 for measuring the feeding distance of the forming wheel module 1 is set on the side internal slide of the structural frame 5, and a third scale 29 for measuring the sliding distance of the forming wheel 24 is set on the linear drive device 22. By adding corresponding scales on the side of each device for adjusting the processing position, the operator can control the processing position more accurately during the processing.

[0034] The method of using this embodiment is:

[0035] Place the skin blank on the storage table, mark it according to the digital model, position the blank through the size positioning frame, and fix it with the skin fixing clamp 11. Set the preload force of the blank by adjusting the hand wheel 14, and record the values ​​of each size scale under the preload state. After the recording is completed, turn on the servo motor of the linear drive device 22, and the motor will drive the forming wheel 24 to move through the travel screw. During the rolling process, stretching oil is applied to the blank close to the rolling forming die 4 to reduce scratches on the surface of the part. Each depth setting is to reciprocate the forming wheel 24 twice. After setting the value to complete the rolling forming, the next size of the rolling operation is performed by adjusting the hand wheel and recording the size scale. The depth adjustment of the rolling operation shall not be greater than 0.2mm each time.

[0036] The above embodiments and drawings are only used to illustrate the technical solution of the utility model, and are not intended to limit the utility model. The utility model is described in detail with reference to the preferred embodiments. It should be understood by ordinary technicians in this field that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the utility model do not deviate from the purpose of the utility model and should also fall within the scope of protection of the claims of the utility model. Other related technical structures not fully disclosed in the utility model are prior art in the field.

Claims

1. A skin rolling forming device for use in aircraft, comprising a rectangular structural frame (5), a forming die (4) for supporting the skin, and a forming wheel module (1) for extruding the skin; Features: The forming die (4) is arranged at the bottom edge of the structural frame (5), and the forming wheel module (1) is arranged inside the structural frame (5) so as to be movable up and down along the side edge; The structural frame (5) is provided with a position adjustment device (2) for adjusting the position of the rolling rib and the edge of the skin; The structural framework (5) is also provided with a forming wheel module (1) and a depth adjustment device (3) for processing depth.

2. The skin rolling forming device for aircraft according to claim 1, characterized in that: The position adjustment device (2) is fixedly arranged on the bottom side of the structural frame (5), and the position adjustment device (2) comprises one or more guide rails (9), and a slidable skin fixing clamp (11) is arranged on the upper end of the guide rail (9).

3. The skin rolling forming device for aircraft according to claim 1, characterized in that: The forming wheel module (1) comprises a linear drive device (22) and a forming wheel (24); both ends of the linear drive device (22) are slidably arranged on a side internal slideway of the structural frame (5); and the forming wheel (24) is slidably arranged on the linear drive device (22).

4. The skin rolling forming device for aircraft according to claim 1, characterized in that: The depth adjustment device (3) is arranged at the upper end of the forming wheel module (1), and comprises a first nut (16) fixed inside the top edge of the structural frame (5), a screw rod (15) adapted to the nut, a hand wheel (14) fixed at the top of the screw rod, and a second nut (17) arranged at the bottom of the screw rod (15). The second nut (17) is connected to the forming wheel module (1) and has a thread rotation direction opposite to that of the first nut (16). Rotating the screw rod (15) drives the forming wheel module (1) to move up and down.

5. The skin rolling forming device for aircraft according to claim 1, characterized in that: The forming concave die (4) is fixedly arranged at the upper end of the bottom edge of the structural frame (5), the forming concave die (4) is provided with a groove (32) for use with the forming wheel module (1), and edge transition dies (30) are fixedly arranged at both ends of the groove (32).

6. The skin rolling forming device for aircraft according to claim 2, characterized in that: A cross beam (7) for reinforcement is arranged between adjacent guide rails (9).

7. The skin rolling forming device for aircraft according to claim 2, characterized in that: The guide rail (9) is provided with a first scale (12) for measuring the sliding distance of the skin fixing clamp (11).

8. The skin rolling forming device for aircraft according to claim 1, characterized in that: A second scale (19) for measuring the feeding distance of the forming wheel module (1) is provided on the inner slideway of the side of the structural frame (5).

9. The skin rolling forming device for aircraft according to claim 3, characterized in that: The linear drive device (22) is provided with a third scale (29) for measuring the sliding distance of the molding wheel (24).

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