A wing integrated forming tool

Abstract

The utility model discloses a kind of wing integrated forming tool, wing includes wing skeleton and forms upper skin and lower skin on the surface of the wing skeleton, the wing skeleton includes square tube beam and is separately arranged in the butt joint rib of wing and wing tip C type rib of both ends of the square tube beam, the wing skeleton further includes the middle rib of wing set in the middle part of the square tube beam;The forming tool includes the tool upper die and tool lower die of mouldable setting;Wherein, the tool lower die opposite two sides are respectively provided with butt joint rib of wing stop block and wing tip C type rib stop block, the positioning pin for positioning the butt joint rib of wing is set on the butt joint rib of wing stop block, the positioning groove for positioning the wing tip C type rib is set on the wing tip C type rib stop block;The tool lower die is also provided with wing middle rib positioning block, and it is used for positioning the middle rib of wing;The wing skeleton further includes square tube beam joint for connecting with the square tube beam.

Description

Technical Field

[0001] This utility model relates to the field of composite material molding technology, specifically to a tooling for integral wing molding. Background Technology

[0002] With the development of science and technology, carbon fiber composite materials have been widely used in aerospace, rail transportation, engineering machinery and other fields due to their excellent properties such as high strength, light weight and fatigue resistance.

[0003] To facilitate transportation, the fuselage and wings of aircraft are often designed to be detachable. In addition to the skin, the wings also contain structural components such as leading edge, spars, and ribs. The traditional process is to form each structural component separately and then assemble them by riveting. The main assembly of the wings and the connection with the fuselage require the use of assembly jigs or special tooling for auxiliary positioning. Therefore, this not only restricts production efficiency but also increases costs. Utility Model Content

[0004] The purpose of this invention is to design an integrated wing molding tool to solve the problems of low efficiency and high cost in traditional wing production processes.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: This utility model designs an integrated wing molding tooling. The wing includes a wing skeleton and an upper skin and a lower skin formed on the surface of the wing skeleton. The wing skeleton includes a square tube beam and wing docking ribs (which dock with the fuselage) and wingtip C-shaped ribs respectively disposed at both ends of the square tube beam. The wing skeleton also includes a wing middle rib disposed in the middle of the square tube beam. The molding fixture includes an upper mold and a lower mold that can be closed together; The lower mold of the tooling is provided with wing docking rib blocks and wingtip C-rib blocks on opposite sides. The wing docking rib blocks are provided with positioning pins for positioning the wing docking ribs, and the wingtip C-rib blocks are provided with positioning grooves for positioning the wingtip C-ribs. The lower mold of the tooling is also provided with wing center rib positioning blocks for positioning the wing center ribs. The wing frame also includes a square tube beam joint for connecting with the square tube beam.

[0006] Furthermore, a wing integral molding tooling: the wing docking rib is composed of an upper wing docking rib and a lower wing docking rib, which are respectively located on both sides of the same end of the square tube beam.

[0007] Furthermore, a wing integral molding tooling: the wing docking rib block includes an upper wing docking rib block and a lower wing docking rib block, which are respectively disposed on the lower mold of the tooling; the upper wing docking rib block and the lower wing docking rib block are respectively provided with positioning pins, which are used to position the upper wing docking rib and the lower wing docking rib respectively.

[0008] Furthermore, a wing integral molding tooling: a gap is formed between the upper part of the wing docking rib block and the lower part of the wing docking rib block.

[0009] Furthermore, a wing integral molding tooling: the molding tooling also includes a square tube beam joint positioning block, which is disposed on the lower mold of the tooling and located in the gap, and the square tube beam joint is disposed on the square tube beam joint positioning block.

[0010] Furthermore, a wing integral molding tooling: the molding tooling also includes a square tube beam positioning block, which is connected to the upper surface of the wing docking rib block and the lower surface of the wing docking rib block, for fixing the square tube beam.

[0011] Furthermore, a wing integral molding tooling: the wing center rib positioning block is disposed on the laying surface of the lower mold of the tooling, and the side of the wing center rib positioning block is provided with a positioning pin hole, and a positioning pin is connected in the positioning pin hole to be used to position the wing center rib.

[0012] Furthermore, a wing integral molding tooling: the positioning groove has a shape adapted to the shape of the wingtip C-rib, and the wingtip C-rib is inserted into the positioning groove to achieve positioning.

[0013] Furthermore, a wing integral molding tooling: the upper mold and the lower mold of the tooling are respectively provided with a number of fixing holes for fixing the upper mold and the lower mold after mold closing.

[0014] The beneficial effects of this utility model are: This invention relates to a wing-integrated molding fixture, which enables the integral molding of the wing body while simultaneously positioning the fuselage connection points. This eliminates the need for a separate wing assembly jig, allowing for seamless connection to the fuselage and improving assembly efficiency. The molding fixture is a double-sided mold, ensuring both the upper and lower surface profiles of the wing and the aircraft's horizontal alignment. The fixture design ensures the wing shell is integrally molded with the beams and ribs, while simultaneously positioning the beam joints and ribs to guarantee the required fit for subsequent fuselage connections.

[0015] This invention relates to a one-piece wing molding fixture, which allows for integral molding, reducing the assembly workload between the wing shell, tubular beams, and metal parts, thus improving efficiency. Furthermore, the fixture also functions as a molding and joint positioning tool, reducing the investment in assembly jigs for subsequent fuselage connections, lowering costs, and enabling more efficient assembly. The fixture can also be cured in an oven, further reducing curing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. 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.

[0017] Figure 1 A schematic diagram of the integrated wing molding tooling designed for Example 1; Figure 2 This is a schematic diagram of the lower die of the tooling in Example 1; Figure 3 This is a front view of the C-shaped rib block at the wingtip in Example 1; Figure 4 This is a schematic diagram of the preparation of the wing skeleton in Example 2.

[0018] The markings in the image are as follows: 1-Upper tooling mold, 2-Lower tooling mold, 3-Wing skeleton, 4-Fixing hole, 21-Wing docking rib stop block, 22-Wingtip C-shaped rib stop block, 23-Positioning pin, 24-Positioning groove, 25-Wing center rib positioning block, 26-Pipe beam joint, 27-Square tube beam joint positioning block, 28-Square tube beam positioning block, 31-Square tube beam, 32-Wing docking rib, 33-Wingtip C-shaped rib, 34-Wing center rib, 211-Upper wing docking rib stop block, 212-Lower wing docking rib stop block, 213-Gap, 251-Positioning pin hole, 321-Upper wing docking rib, 322-Lower wing docking rib, 341-Upper wing center rib. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.

[0021] Example 1

[0022] like Figures 1-3 As shown, this embodiment 1 designs an integrated wing molding tooling. The wing includes: a wing frame 3 and an upper skin and a lower skin (wing shell) formed on the surface of the wing frame 3. The wing frame 3 includes a square tube beam 31 and wing docking ribs 32 and wingtip C-shaped ribs 33 respectively disposed at both ends of the square tube beam 31. The wing frame 3 also includes a wing center rib 34 disposed in the middle of the square tube beam 31. The wing frame 3 also includes a square tube beam joint 26 for connecting with the square tube beam 31. Specifically, the wing docking rib 32 is composed of an upper wing docking rib 321 and a lower wing docking rib 322, which are respectively located on both sides of the same end of the square tube beam 31, and the wingtip C-shaped rib 33 has a "C" shaped cross-section. The molding fixture includes an upper mold 1 and a lower mold 2 that can be closed together; The lower die 2 of the tooling is provided with detachable wing docking rib blocks 21 and wingtip C-shaped rib blocks 22 on opposite sides. The wing docking rib blocks 21 include upper wing docking rib block 211 and lower wing docking rib block 212, which are detachably provided on the lower die 2 of the tooling, with a gap 213 between them. The upper wing docking rib block 211 and lower wing docking rib block 212 are respectively provided with positioning pins 23 for positioning the upper wing docking rib 321 and lower wing docking rib 322. The wingtip C-shaped rib block 22 is provided with a positioning groove 24 that matches the shape of the wingtip C-shaped rib 33. The wingtip C-shaped rib 33 can be inserted into the positioning groove 24 for positioning. The tooling lower mold 2 is also provided with a wing center rib positioning block 25. A positioning pin hole 251 is provided on the side of the wing center rib positioning block 25. The wing center rib 34 can be positioned by connecting a positioning pin in the positioning pin hole 251. A square tube beam joint positioning block 27 is also provided on the lower mold 2 of the tooling in the gap 213. A square tube beam joint 26 is provided on the square tube beam joint positioning block 27 by a positioning pin. The square tube beam joint 26 is used to connect the square tube beam 31. A square tube beam positioning block 28 is also provided on the upper surface of the upper 211 of the wing docking rib block and the lower 212 of the wing docking rib block, which is used to further fix the square tube beam 31 connected to the square tube beam joint 26.

[0023] Specifically, in Embodiment 1, the wing docking rib block 21 and the wingtip C-shaped rib block 22 can be detachably connected to the lower mold of the tooling by bolts.

[0024] Example 2

[0025] A one-piece wing molding process is provided, which uses the molding tooling of Example 1 and includes the following steps: S1. Mold treatment: Clean the upper mold 1 and lower mold 2 of the tooling with acetone and apply a release agent; S2, Wing frame pre-installed: such as Figure 4 As shown, the square tube beam joint 26 is connected to the square tube beam joint positioning block 27. A wingtip C-rib 33 is inserted into one end of the square tube beam 31. Then, one end of the square tube beam 31 is inserted into the square tube beam joint 26, and the other end, along with the wingtip C-rib 33, is inserted into the positioning groove 24 of the wingtip C-rib stop block 22. The upper wing docking rib 321 and the lower wing docking rib 322 are then placed on both sides of the square tube beam 31 and positioned using the positioning pins 23 provided on the upper wing docking rib stop block 211 and the lower wing docking rib stop block 212, respectively. Finally, the wing center rib 34 is placed in the middle of the square tube beam 31 and the positioning pin is connected in the positioning pin hole 251 of the wing center rib positioning block 25 to achieve the positioning function of the wing center rib 34. Then, the square tube beam positioning block 28 is connected to further fix the square tube beam 31, and the gap between each component is adjusted. Then, the glue is slowly and evenly injected with a syringe. After the glue has cured, the square tube beam 31 and the rib, the square tube beam 31 and the square tube beam joint 26, and the square tube beam joint 26 and the rib are riveted at the corresponding positions to obtain the wing frame 3. S3, Laying and Molding: First, remove the wing skeleton 3 from the lower mold 2 of the tooling. Lay the prepreg of the lower mold part of the wing shell according to the layup table. Use the isolation mold to isolate the skin of the upper mold part. After the adhesive film is laid, place the pre-assembled wing skeleton, filler foam and wing middle rib 341 through the positioning pins 23 on the side of the wing docking rib block 211 and the wing docking rib block 212. After laying the adhesive film, fold the reserved prepreg onto the upper surface. S4. Mold Closure and Curing: Align the upper mold 1 and lower mold 2 of the tooling and close the mold. Then, use bolts to tighten them evenly and symmetrically through the fixing holes 4. According to the material curing parameters, cure in the oven. After curing, remove the bolts, remove the upper mold 1 of the tooling, and then remove the blocks in sequence (including the upper wing docking rib block 211, the lower wing docking rib block 212, and the wingtip C-shaped rib block 22) and take out the wing part.

[0026] The above-described preferred embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of this utility model. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A tooling for integral molding of an airfoil, characterized in that, The wing includes a wing frame (3) and an upper skin and a lower skin formed on the surface of the wing frame (3). The wing frame (3) includes a square tube beam (31) and wing docking ribs (32) and wingtip C-shaped ribs (33) respectively disposed at both ends of the square tube beam (31). The wing frame (3) also includes a wing center rib (34) disposed in the middle of the square tube beam (31). The molding fixture includes an upper mold (1) and a lower mold (2) that can be closed and set together. Among them, the lower mold (2) of the tooling is provided with a wing docking rib block (21) and a wingtip C-shaped rib block (22) on opposite sides. The wing docking rib block (21) is provided with a positioning pin (23) for positioning the wing docking rib (32), and the wingtip C-shaped rib block (22) is provided with a positioning groove (24) for positioning the wingtip C-shaped rib (33). The lower die (2) of the tooling is also provided with a wing center rib positioning block (25), which is used to position the wing center rib (34); the wing frame (3) also includes a square tube beam joint (26) for connecting with the square tube beam (31).

2. The wing integral molding tooling according to claim 1, characterized in that, The wing docking rib (32) is composed of an upper wing docking rib (321) and a lower wing docking rib (322), which are respectively located on both sides of the same end of the square tube beam (31).

3. The wing integral molding tooling according to claim 2, characterized in that, The wing docking rib block (21) includes an upper wing docking rib block (211) and a lower wing docking rib block (212), which are respectively disposed on the lower die of the tooling (2); The locating pins (23) are respectively provided on the upper (211) and lower (212) of the wing docking rib block to position the upper (321) and lower (322) of the wing docking rib.

4. The wing integral molding tooling according to claim 3, characterized in that, A gap (213) is formed between the upper (211) and lower (212) of the wing docking rib block.

5. The wing integral molding tooling according to claim 4, characterized in that, The forming fixture also includes a square tube beam joint positioning block (27), which is set on the lower mold (2) of the fixture and located in the gap (213), and the square tube beam joint (26) is set on it.

6. The wing integral molding tooling according to claim 5, characterized in that, The forming fixture also includes a square tube beam positioning block (28), which is connected to the upper surface of the upper (211) and lower (212) of the wing docking rib block, for fixing the square tube beam (31).

7. The wing integral molding tooling according to claim 1, characterized in that, The wing rib positioning block (25) is set on the laying surface of the lower mold (2) of the tooling, and its side is also provided with a positioning pin hole (251), in which a positioning pin is connected for positioning the wing rib (34).

8. The wing integral molding tooling according to claim 1, characterized in that, The positioning groove (24) has a shape that matches the shape of the wingtip C-rib (33), and the wingtip C-rib (33) is inserted into the positioning groove (24) to achieve positioning.

9. The wing integral molding tooling according to claim 1, characterized in that, The upper mold (1) and lower mold (2) of the tooling are also provided with a number of fixing holes (4) for fixing after mold closing.

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