Modular airfoil assembly jig

Abstract

This invention discloses a modular wing-type assembly fixture, including a frame mechanism. Several clamping mechanisms for fixing the wing surfaces are symmetrically distributed on both sides of the frame mechanism according to the wing type. Several process hole positioning mechanisms and joint positioning mechanisms that are detachably connected to the frame mechanism are installed within the frame mechanism. The modular assembly fixture for aircraft wings provided by this invention is based on a modular design concept, utilizing the reconfigurable characteristics of basic units to form various fixture configurations, and designing corresponding reusable positioning components to meet the needs of existing aircraft assembly. It can ensure the progress of scientific research and production, quickly complete the assembly process of the fixture according to design requirements, and can even be designed in parallel with the product. All its components are reusable, requiring no customized design, greatly reducing the cost of the fixture and shortening its production cycle, thereby shortening the overall aircraft cycle and indirectly reducing the aircraft manufacturing cost. It is suitable for widespread application.

Description

Technical Field

[0001] This invention relates to the field of aircraft assembly tooling technology, specifically to a modular wing surface assembly tooling. Background Technology

[0002] Aircraft component assembly is a crucial step in the formation of the aircraft's structural integration and quality characteristics, accounting for more than 50% of the entire aircraft manufacturing cycle. The development cycle of aircraft assembly tooling accounts for about half of the aircraft production preparation cycle, and tooling costs account for about 20% to 30% of the total cost. The design, manufacturing, and cost of tooling have become one of the decisive factors restricting the development and mass production of new aircraft. Traditional aircraft assembly jigs use rigid connections, and each set is custom-designed according to the product's external dimensions.

[0003] With the development of the international situation, countries have placed higher demands on aircraft production capacity and product quality. As an important component of the aircraft assembly process, assembly tooling also faces significant challenges. To ensure the progress of scientific research and production, assembly tooling is required to achieve rapid design, even parallel design with the product, and high cost requirements are placed on tooling. Existing assembly tooling consists of rigid connections, cannot be reused, has extremely high unit production costs, and each set of tooling is custom-designed, making advance production preparation impossible and resulting in extremely long design and manufacturing cycles. Summary of the Invention

[0004] The purpose of this invention is to provide a modular wing-like assembly tooling with multiple reusable features, thereby reducing manufacturing costs and shortening the manufacturing cycle.

[0005] The present invention is achieved through the following technical solution: a modular wing-type assembly tooling, including a skeleton mechanism, on both sides of the skeleton mechanism are a number of plate and card mechanisms for fixing the wing according to the wing type, and a number of process hole positioning mechanisms and joint positioning mechanisms that are detachably connected to the skeleton mechanism are installed inside the skeleton mechanism.

[0006] The working principle of this technical solution is to provide a modular wing-type assembly tooling. This tooling is based on the modular design concept, utilizes the reconfigurable characteristics of basic units to form a variety of tooling configurations, and designs corresponding reusable positioner components. This solves the problem that traditional wing-type assembly tooling is not reusable and each piece requires customized design, resulting in high tooling costs and long cycles.

[0007] To better realize the present invention, the skeleton mechanism further includes at least one skeleton unit, each skeleton unit includes at least two bases, each base is provided with at least one vertical rod on its upper part, and two parallel horizontal rods are fixed between two adjacent vertical rods. One end of each vertical rod is fixed to the base and the other end is fixed to the upper horizontal rod. The plate clamping mechanism is symmetrically arranged on both sides of the horizontal rod. The process hole positioning mechanism and the joint positioning mechanism are installed on the inner side of the horizontal rod. The inner side of the vertical rods at both ends is also provided with a wing surface fixing mechanism.

[0008] To better realize the present invention, the horizontal bar, vertical bar, and base are further composed of at least one steel column, and two adjacent steel columns are fixedly connected by a planar overlapping plate. A vertical angle steel is provided at the vertical connection between the vertical bar and the horizontal bar or the base.

[0009] To better realize the present invention, a support block is further provided at the lower part of the lower crossbar, and leveling bolts are provided at the bottom of both the support block and the base.

[0010] To better realize the present invention, the plate mechanism further includes a central mounting plate, one end of which is equipped with a slider end or a fixed end, and the other end of which is equipped with a fixed end. A slide rail matching the slider end is provided on the outer side of the crossbar, and a positioning block is also provided on the crossbar on the side of the slide rail.

[0011] To better realize the present invention, the process hole positioning mechanism further includes a positioning seat fixed to the upper end face of the lower crossbar. The positioning seat is in the shape of a mountain. A guide rail is provided on one side of the upper front face of the positioning seat. A transition plate that can slide back and forth on the guide rail is provided on the guide rail. A positioner is movably connected to the front face of the transition plate by bolts. Handles are provided on both sides of the transition plate. A buffer is provided at the lower part of the transition plate. A positioning pin is inserted into the upper rear face of the positioning seat. The transition plate is fixed to the positioning seat by the positioning pin.

[0012] To better realize the present invention, the positioning pin further includes a pin shaft, one end of which is provided with a rotating handle, a block is provided in the middle of the pin shaft, a ball-head plunger is provided on the block, and the upper rear end face of the positioning seat is provided with a groove that matches the block, and a sliding groove for the ball-head plunger to extend out is provided in the groove.

[0013] To better realize the present invention, the joint positioning mechanism further includes a support base fixed to the lower end face of the upper crossbar, a screw fixed on the support base, a handwheel threadedly connected to the screw, the handwheel being able to move back and forth on the screw by rotating on the screw, a connecting plate nested on the screw, a fixing handle provided on the connecting plate, and a joint for fixing the wing surface detachably connected to one side of the connecting plate.

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

[0015] (1) The modular assembly tooling for aircraft wing surfaces provided by the present invention is based on the modular design concept, utilizes the reconfigurable characteristics of basic units to form a variety of tooling configurations, and designs corresponding reusable locator components to meet the needs of existing aircraft assembly.

[0016] (2) The modular wing surface assembly tooling provided by the present invention can ensure the progress of scientific research and production, and quickly complete the assembly process of the tooling according to the design requirements. It can even be designed in parallel with the product. All its components can be reused without customized design, which greatly reduces the cost of tooling and shortens the production cycle of tooling, thereby shortening the cycle of the entire aircraft and indirectly reducing the manufacturing cost of the aircraft.

[0017] (3) The present invention has complete functions and reasonable structure. It can quickly adapt to the assembly needs of various aircraft wing surfaces. It solves the problem that traditional wing surface assembly tooling cannot be reused and each part needs to be customized, resulting in high tooling costs and long cycles. It is suitable for widespread application. Attached Figure Description

[0018] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the low-stiffness skeleton mechanism in this invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the medium-stiffness skeleton mechanism in this invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the high-rigidity frame mechanism in this invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the 2000*1500mm skeleton mechanism in this invention;

[0024] Figure 6 This is a three-dimensional structural diagram of the 3500*1500mm skeleton mechanism in this invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the 6000*1500mm skeleton mechanism in this invention;

[0026] Figure 8This is a three-dimensional structural diagram of the board mechanism in this invention;

[0027] Figure 9 This is a three-dimensional structural diagram of the process hole positioning mechanism in this invention;

[0028] Figure 10 This is a three-dimensional structural diagram of the locating pin in this invention;

[0029] Figure 11 This is a three-dimensional structural diagram of the joint positioning mechanism in this invention.

[0030] in:

[0031] 1—Skeleton mechanism, 11—Base, 12—Vertical rod, 13—Diagonal brace, 14—Horizontal rod, 15—Leveling bolt, 16—Support block, 17—Flat overlapping plate, 18—Slide rail, 19—Positioning block, 2—Panel mechanism, 21—Slider end, 22—Mounting plate, 23—Fixed end, 3—Process hole positioning mechanism, 31—Positioning seat, 32—Guide rail, 33—Adapter plate, 34—Positioner, 35—Handle, 36—Buffer, 37—Positioning pin, 371—Rotating handle, 372—Pin shaft, 373—Insertion, 374—Ball head plunger, 4—Joint positioning mechanism, 41—Support seat, 42—Screw, 43—Handwheel, 44—Connecting plate, 45—Joint. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example 1:

[0036] The main structure of this embodiment is as follows: Figure 1 As shown, it includes a skeleton mechanism 1, on both sides of the skeleton mechanism 1 there are several fixed wing surface plate mechanisms 2 symmetrically distributed according to the wing surface type, and several process hole positioning mechanisms 3 and joint positioning mechanisms 4 that are detachably connected to the skeleton mechanism 1 are installed inside the skeleton mechanism 1.

[0037] The specific usage process is as follows: install the frame mechanism 1 according to the length and weight of the aircraft wing surface, install the plate mechanism 2 on the frame mechanism 1, then lift one side of the aircraft through the plate 2, and install the process hole positioning mechanism and the joint positioning mechanism 4 that match the position of the wing surface on the inner side of the frame mechanism 1 according to the length and width of the aircraft wing surface. The process hole positioning mechanism 3 is used to position the process holes on the wing surface, and the joint positioning mechanism 4 is used to position the joints on the wing surface.

[0038] Example 2:

[0039] This embodiment further defines the structure of the skeleton mechanism 1 based on the above embodiments, such as... Figure 1 As shown, the skeleton mechanism 1 includes at least one skeleton unit, each skeleton unit includes at least two bases 11, each base 11 has at least one vertical rod 12 on its upper part, and two parallel horizontal rods 14 are fixed between two adjacent vertical rods 12. One end of each vertical rod 12 is fixed to the base 11, and the other end is fixed to the upper horizontal rod 14 with a diagonal brace 13. The plate clamping mechanism 2 is symmetrically arranged on both sides of the horizontal rod 14. The process hole positioning mechanism 3 and the joint positioning mechanism 4 are installed on the inner side of the horizontal rod 14. The inner side of the vertical rods 12 at both ends is also provided with a wing surface fixing mechanism.

[0040] The type of the skeleton mechanism 1, depending on the number and overlapping method of the base 11, vertical rod 12, horizontal rod 14, and diagonal brace 13, can exhibit different levels of support stiffness, such as... Figures 2-4 As shown, Figure 2 It is a low-stiffness frame structure. Figure 3 It is a medium-stiffness frame structure. Figure 4This is a high-rigidity frame structure. The three main types of frame structures differ primarily in the stiffness of the frame structure 1. However, as the stiffness of the frame structure 1 increases, the openness of the inner frame of the frame structure 1 decreases. Therefore, when installing on the aircraft wing surface, a frame structure with appropriate rigidity must be selected.

[0041] Within each major category, subcategories can be further divided into different sizes based on product dimensions. Different sizes of frame mechanisms 1 can be obtained based on the number of crossbars 14 joined together, such as... Figures 5-7 As shown, Figure 5 The frame structure is 2000*1500mm. Figure 6 The frame structure is 3500*1500mm; Figure 7 The frame structure is 6000*1500mm.

[0042] The base 11, vertical rod 12, and horizontal rod 14 can be constructed from steel pipes of 1500mm, 2000mm, and 2500mm in diameter. Depending on the actual situation, in the overlapping or splicing of various structures within the framework 11, the base 11, vertical rod 12, and horizontal rod 14 are each composed of at least one steel column. Adjacent steel columns are fixedly connected by a planar overlapping plate 17. Vertical angle steel is installed at the vertical connection points between the vertical rod 12 and the horizontal rod 14 or the base 11. The vertical angle steel ensures the stability of the vertical connection points.

[0043] In addition, a support block 16 is provided at the lower part of the lower crossbar 14, and leveling bolts 15 are provided at the bottom of both the support block 16 and the base 11. When using a longer crossbar 14, or when multiple crossbars 14 are spliced ​​together, the support block 16 provides support for the lower crossbar 14, ensuring the stability of the entire frame mechanism 1. The leveling bolts 15 allow the base 11 to adapt to various bottom surfaces, ensuring the stability of the entire frame mechanism 1. Other parts of this embodiment are the same as those in the above embodiments and will not be described again.

[0044] Example 3:

[0045] This embodiment further defines the structure of the board mechanism 2 based on the above embodiment, such as... Figure 1 , Figure 8 As shown, the plate mechanism 2 includes a mounting plate 22 in the middle. One end of the mounting plate 22 is equipped with a slider end 21 or a fixed end 23, and the other end of the mounting plate 22 is equipped with a fixed end 23. A slide rail 18 matching the slider end 21 is provided on the outside of the crossbar 14, and a positioning block 19 is also provided on the crossbar 14 on the side of the slide rail 18.

[0046] The plate mechanism 2 is divided into a sliding plate mechanism and a detachable plate mechanism, depending on whether a slider end 21 or a fixed end 23 is mounted on the end of the mounting plate 22. The detachable plate mechanism is directly and detachably connected to the crossbar 14 of the frame mechanism 1 through the fixed end 23, while the sliding plate mechanism can slide on the slide rail 18 outside the crossbar 14 in the frame mechanism 1. The mounting plate 22 can be customized according to different products, and its two ends have standard interfaces that can be connected to either the slider end 21 or the fixed end 23. This allows all parts of the plate mechanism 2 to be reused.

[0047] The sliding plate mechanism is used on both sides of the crossbar 14 in the skeleton mechanism 1, such as... Figure 1 As shown, during use, the slider end 21 is positioned on the slide rail 18 in conjunction with the positioning block 19. When the wing product is mounted or dismounted, the plate mechanism 2 slides to both sides of the frame mechanism 1. The design process of the sliding plate mechanism must ensure that the frame space is still sufficient for product unmounting after the plate mechanism 2 slides to both sides and is stacked. Therefore, the length of the slide rail 18 cannot be infinitely long.

[0048] When the frame mechanism 1 is too long or the number of plate mechanisms is too large, the plate mechanisms of the frame mechanism 1 adopt detachable plates, that is, both ends of the mounting plate 22 are set as fixed ends 23. When the aircraft wing surface product is loaded or unloaded, the plate mechanism 2 can be lifted up and removed. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again.

[0049] Example 4:

[0050] This embodiment further defines the structure of the process hole positioning mechanism 3 based on the above embodiments, such as... Figure 9 As shown, the process hole positioning mechanism 3 includes a positioning seat 31 fixed to the upper end face of the lower crossbar 14. The positioning seat 31 is mountain-shaped. A guide rail 32 is provided on one side of the upper front end face of the positioning seat 31. A transition plate 33 that can slide back and forth on the guide rail 32 is provided on the guide rail 32. A positioner 34 is movably connected to the front end face of the transition plate 33 by bolts. Handles 35 are provided on both sides of the transition plate 33. A buffer 36 is provided at the lower part of the transition plate 33. A positioning pin 37 is inserted into the upper rear end face of the positioning seat 31. The transition plate 33 is fixed to the positioning seat 31 by the positioning pin 37.

[0051] The specific structure of the locating pin 37, such as Figure 10 As shown, the positioning pin 37 includes a pin shaft 372, one end of which is provided with a rotating handle 371, and a block 373 is provided in the middle of the pin shaft 372. A ball plunger 374 is provided on the block 373. The upper rear end face of the positioning seat 31 is provided with a groove that matches the block 374, and a sliding groove for the ball plunger 374 to extend out is provided in the groove.

[0052] A double guide rail 32 is provided on one side of the upper front face of the positioning seat 31. The positioner 34 is customized according to the product structure. The adapter plate 33 has a standard interface that can be connected to different positioner 34 structures. Except for the positioner 34, the rest of the process hole positioning mechanism 3 can be reused. The adapter plate 33 is positioned on the guide rail 32 by two handles 35 on the left and right, and is fixed by the positioning pin 37.

[0053] The locating pin 37 only has a beveled annular groove. When the locating pin 37 is out of working condition, the ball head of the ball plunger 374 slides into the annular groove of the locating pin, ensuring that the locating pin 37 will not be completely pulled out. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again.

[0054] Example 5:

[0055] This embodiment further defines the structure of the connector positioning mechanism 4 based on the above embodiments, such as... Figure 11 As shown, the joint positioning mechanism 4 includes a support base 41 fixed to the lower end face of the upper crossbar 14. A screw 42 is fixed on the support base 41. A handwheel 43 is threadedly connected to the screw 42. The handwheel 43 can move up and down the screw 42 by rotating on the screw 42. A connecting plate 44 is also nested on the screw 42. A fixing handle is provided on the connecting plate 44. A joint 45 for fixing the wing surface is detachably connected to one side of the connecting plate 4.

[0056] The connector positioning mechanism 4 adopts a single-screw structure. The connector 45 is customized according to the product structure, and a standard interface is provided on the connecting plate 44, which can be connected to different connector 45 structures. Except for the connector 45, the rest of the connector positioning mechanism 4 can be reused.

[0057] The screw 42 does not have a trapezoidal thread at its tip, but retains a smooth, precision-engineered shaft to mate with the connecting plate 44. Compared to the traditional structure where the entire screw has a precision-engineered trapezoidal thread, this method separates the functions of movement and positioning. The smooth shaft performs the positioning function, while the threaded portion only performs the movement function. This significantly increases the contact area of ​​the positioning portion, improving positioning reliability. Furthermore, the moving portion does not require precision-engineered threads, greatly reducing manufacturing difficulty. Other parts of this embodiment are the same as those in the previous embodiment and will not be described again.

[0058] It is understood that the working principle and process of the modular wing-type assembly tooling structure according to an embodiment of the present invention, such as the positioning quick 2 and the handwheel 43, are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0059] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A modular wing-like assembly fixture, characterized in that, Includes a skeleton mechanism (1), on both sides of the skeleton mechanism (1) are several fixed wing surface plate mechanisms (2) symmetrically distributed according to the wing surface type, and several process hole positioning mechanisms (3) and joint positioning mechanisms (4) are installed inside the skeleton mechanism (1) and can be detachably connected to it. The skeleton mechanism (1) includes at least one skeleton unit, each skeleton unit includes at least two bases (11), each base (11) is provided with at least one vertical rod (12) on the upper part, and two parallel horizontal rods (14) are fixed between two adjacent vertical rods (12). One end of the vertical rod (12) is fixed to the base (11) and the other end is fixed to the upper horizontal rod (14) with a diagonal brace (13). The plate mechanism (2) is symmetrically arranged on both sides of the horizontal rod (14). The process hole positioning mechanism (3) and the joint positioning mechanism (4) are installed on the inner side of the horizontal rod (14). The inner side of the vertical rods (12) at both ends is also provided with a wing surface fixing mechanism. The plate mechanism (2) includes a mounting plate (22) in the middle. One end of the mounting plate (22) is equipped with a slider end (21) or a fixed end (23), and the other end of the mounting plate (22) is equipped with a fixed end (23). A slide rail (18) matching the slider end (21) is provided on the outside of the crossbar (14). A positioning block (19) is also provided on the crossbar (14) on the side of the slide rail (18). The process hole positioning mechanism (3) includes a positioning seat (31) fixed to the upper end face of the lower crossbar (14). The positioning seat (31) is mountain-shaped. A guide rail (32) is provided on one side of the upper front end face of the positioning seat (31). A transition plate (33) that can slide back and forth on the guide rail (32) is provided on the guide rail (32). A positioner (34) is movably connected to the front end face of the transition plate (33) by bolts. Handles (35) are provided on both sides of the transition plate (33). A buffer (36) is provided at the lower part of the transition plate (33). A positioning pin (37) is inserted into the upper rear end face of the positioning seat (31). The transition plate (33) is fixed to the positioning seat (31) by the positioning pin (37). The joint positioning mechanism (4) includes a support base (41) fixed to the lower end face of the upper crossbar (14). A screw (42) is fixed on the support base (41). A handwheel (43) is threaded onto the screw (42). The handwheel (43) can move up and down the screw (42) by rotating on the screw (42). A connecting plate (44) is also nested on the screw (42). A fixing handle is provided on the connecting plate (44). A joint (45) for fixing the wing surface is detachably connected to one side of the connecting plate (44).

2. The modular wing-type assembly tooling according to claim 1, characterized in that, The horizontal bar (14), vertical bar (12), and base (11) are each composed of at least one steel column. Adjacent steel columns are fixedly connected by a planar lap plate (17). Vertical angle steel is provided at the vertical connection between the vertical bar (12) and the horizontal bar (14) or the base (11).

3. The modular wing-type assembly fixture according to claim 2, characterized in that, The lower part of the lower crossbar (14) is also provided with a support block (16), and the bottom of the support block (16) and the base (11) are both provided with leveling bolts (15).

4. The modular wing-type assembly tooling according to claim 1, characterized in that, The positioning pin (37) includes a pin shaft (372), one end of which is provided with a rotating handle (371), and a block (373) is provided in the middle of the pin shaft (372). A ball head plunger (374) is provided on the block (373). The upper rear end face of the positioning seat (31) is provided with a groove that matches the block (373), and a sliding groove for the ball head plunger (374) to extend out is provided in the groove.

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