Tool for assisting drilling of connecting wingtip of wing

Abstract

The invention discloses a tool for assisting drilling of a wing connecting wingtip, the tool comprises a support, a first drilling template, a second drilling template, a positioning bush and a U-shaped positioning pin, the support is provided with a first template support, a second template support, a positioning plate and a fastening plate, and the positioning plate is provided with a mounting hole; the first drilling template and the second drilling template are provided with positioning profiles attached to the wing skin profile, the first drilling template and the second drilling template are installed on the first template support and the second template support correspondingly, and a wing placing area is formed between the first drilling template and the supports and between the second drilling template and the supports. Drilling bushings are mounted on the second end surfaces of the first drilling template and the second drilling template; the drilling bushings are provided with inner hole channels matched with to-be-processed mounting holes of the wing in diameter; the positioning bushing and the mounting hole are mounted in an interference fit manner; the tool and the wing are mounted in an attached and positioned mode, and the machining efficiency and the position precision of mounting holes are high.

Description

Technical Field

[0001] This invention belongs to the technical field of aerospace manufacturing, and in particular relates to a tooling for auxiliary wingtip drilling for connecting wing components. Background Technology

[0002] In the field of aerospace manufacturing, the connection precision between aircraft wings and wingtips directly affects the aircraft's flight performance and structural safety, and the machining precision of the mounting holes is crucial to ensuring the reliability of the connection. The structure of the wing-wingtip connection area is complex, the skin surface is irregular, and the mounting holes are mostly through holes, requiring extremely high standards for coaxiality, hole diameter accuracy, and hole position consistency.

[0003] The traditional drilling methods for mounting holes at the connection points between aircraft wings and wingtips often rely on manual positioning or simple tooling, which presents the following problems: low positioning accuracy, as manual positioning depends on operator experience and makes it difficult to ensure the consistency and coaxiality of multiple mounting holes, easily leading to hole misalignment during assembly and affecting connection strength; insufficient operational convenience, as the tooling structure is bulky, lacks reasonable positioning and locking mechanisms, and is cumbersome to install and disassemble. Furthermore, long-term use can lead to problems such as wear of positioning holes and loosening of bushings, resulting in a gradual decrease in drilling accuracy; low processing efficiency, as traditional tooling is mostly designed for single-sided drilling, making simultaneous drilling on both sides impossible, and the positioning and disassembly processes are time-consuming, affecting overall production efficiency; and poor tooling versatility, as traditional tooling is often custom-designed to fit specific aircraft models or single hole positions. Redesigning and manufacturing is required when changing products, increasing production costs and time. Summary of the Invention

[0004] The purpose of this invention is to solve at least one problem in the prior art and to provide a tooling for assisting in drilling holes at the wingtip of an airfoil connection.

[0005] To achieve the above objectives, the present invention proposes a tooling for assisting in drilling holes at the wingtip of an airfoil connection, comprising:

[0006] The bracket has a first template bracket and a second template bracket installed on its upper and lower surfaces, respectively. The bracket is provided with a positioning plate and a fastening plate. The positioning plate is provided with mounting holes, and the fastening plate is used to connect the aileron hinge of the wing. The drilling template includes a first drilling template and a second drilling template. The first end face of the first drilling template and the second drilling template are provided with a positioning surface that fits with the wing skin profile. The first drilling template and the second drilling template are respectively installed on the first template support and the second template support, and form a wing placement area between them and the upper and lower surfaces of the support. The second end face of the first drilling template and the second drilling template is provided with a drilling bushing along the thickness direction. The drilling bushing is provided with an inner channel that is adapted to the diameter of the installation hole to be processed on the wing. A positioning bushing is installed with an interference fit to the mounting hole; U-shaped locating pins are used to connect the locating bushing and the inner plate located inside the wing tip.

[0007] As an optional implementation, the first template bracket and the second template bracket are symmetrically positioned and installed on the upper and lower surfaces of the bracket using fasteners. There are two of each type of bracket, and they are symmetrically arranged on the bracket from left to right.

[0008] As an optional implementation, both the first and second drilling templates are provided with positioning slots. Both the first template support and the second template support include a support plate and a limiting plate. The support plate is installed on the support, and the limiting plate is connected to the support plate. The limiting plates of the first template support and the second template support are inserted into the positioning slots of the corresponding first and second drilling templates and fixed with fasteners.

[0009] As an optional implementation, the first drilling template and the second drilling template are provided with limiting baffles, and the positioning bayonet is formed by three limiting baffles.

[0010] As an optional implementation, the limiting plate and the support plate are connected by bolts, nuts and positioning pins, with four positioning pins and bolts respectively located at the four vertices of the square.

[0011] As an optional implementation, the top outer wall of the drill bushing is provided with a clamping port, and the second end face of the first drill template and the second drill template is equipped with a locking screw, the screw head of the locking screw pressing against the clamping port of the drill bushing.

[0012] As an optional implementation, the positioning plate is detachably mounted on the lower surface of the bracket by fasteners.

[0013] As an optional implementation, one end of the U-shaped positioning pin connected to the positioning bushing is provided with a stepped groove, the positioning bushing is sleeved on the outside of the stepped groove of the U-shaped positioning pin, and the stepped opening of the stepped groove abuts against the rear end face of the positioning bushing.

[0014] As an optional implementation, the positioning bushing is a wear-resistant alloy steel component, the bracket is a high-strength aluminum alloy component, and the bracket has a hollow structure.

[0015] As an optional implementation, both the first and second drilling templates are composed of a first connecting plate, a second connecting plate, and an adjusting plate. One end of the first and second connecting plates has an axial insertion channel. The sides of the first, second, and adjusting plates are provided with a plurality of adjusting holes. The adjusting plate is used to connect the first and second connecting plates. Both ends of the adjusting plate are respectively inserted into the insertion channels of the first and second connecting plates and can move within the insertion channels. After the first and second drilling templates are adjusted to a predetermined length position, screws are used to connect with the adjusting holes to lock the first, second, and adjusting plates.

[0016] The beneficial effects of this invention are as follows: A first drilling template and a second drilling template are installed on the upper and lower surfaces of the support via a first template support and a second template support, respectively. Both drilling templates are fitted with drilling bushings. The support and the inner plate inside the wing are precisely positioned and installed using a positioning plate, positioning bushings, and U-shaped positioning pins. The fastening plate of the support and the aileron hinge of the wing are connected by fastening pins to secure the tooling to the wing. The drilling templates are designed with a positioning profile that adapts to the wing skin profile, ensuring a smooth fit between the tooling and the wing, guaranteeing coaxiality and positional consistency of the mounting holes. The two drilling templates are independent of each other, allowing for drilling on one or both sides of the wing simultaneously, improving processing efficiency and expanding the range of applicable processing scenarios. The first and second template supports are connected to the support via threaded locking positioning pins, enabling quick installation and disassembly. The U-shaped positioning pins can be inserted from the back of the part for positioning, solving the problem of difficulty in fixing positioning pins in confined spaces, simplifying the operation process, and improving work efficiency.

[0017] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a first-view schematic diagram of the overall structure of an embodiment of the present invention.

[0019] Figure 2 This is a second-view schematic diagram of the overall structure of an embodiment of the present invention.

[0020] Figure 3 This is a partial structural schematic diagram of an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the support structure according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the first template support structure according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the second drilling template according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the second drilling template according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the first drilling template according to an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the first drilling template according to an embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram of the drill bushing clamping state according to an embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the U-shaped positioning pin structure according to an embodiment of the present invention.

[0029] Figure 12 This is a schematic diagram of the fastening plate structure according to an embodiment of the present invention.

[0030] Figure 13 This is a schematic diagram of the wing and tooling installation status according to an embodiment of the present invention.

[0031] Figure 14 This is an embodiment of the present invention. Figure 13 Enlarged view of a portion of the diagram.

[0032] In the figure: 1. Support; 2. First drilling template; 3. Second drilling template; 4. First template support; 5. Second template support; 6. Positioning bushing; 7. U-shaped positioning pin; 8. Drilling bushing; 9. Positioning bayonet; 11. Positioning plate; 12. Fastening plate; 41. Support plate; 42. Limiting plate; 71. Step groove; 91. Limiting baffle. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. In the description of this application, it should be noted that the terms "inner," "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 application. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 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 application based on the specific circumstances.

[0035] The present invention will now be described in detail with reference to the accompanying drawings.

[0036] See Figures 1 to 14 This embodiment provides a tooling for assisting in drilling holes for connecting wingtips, including: The bracket 1 has a first template bracket 4 and a second template bracket 5 installed on its upper and lower surfaces, respectively. A positioning plate 11 and a fastening plate 12 are respectively provided on both sides of the bracket 1. The positioning plate 11 is provided with mounting holes, and the fastening plate 12 is used to connect the aileron hinge 100 at the end of the wing 10. The drilling template includes a first drilling template 2 and a second drilling template 3. The first end face of the first drilling template 2 and the second drilling template 3 are provided with positioning surfaces that fit with the wing skin profile. The first drilling template 2 and the second drilling template 3 are respectively installed on the first template support 4 and the second template support 5, and form a wing placement area between them and the upper and lower surfaces of the support 1. The second end face of the first drilling template 2 and the second drilling template 3 are each provided with a drilling bushing 8 along the thickness direction. The drilling bushing 8 is provided with an inner channel along the axial direction that is adapted to the diameter of the installation hole to be processed on the wing 10. Positioning bushing 6, which is installed with an interference fit to the mounting hole of positioning plate 11; U-shaped locating pin 7 is used to connect the locating bushing 6 and the inner plate 101 located inside the end of the wing 10.

[0037] The drilling bushing 8 serves to guide the drilling and protect the drilling template, preventing wear and deformation of the holes on the template due to long-term drilling. The two ends of the U-shaped locating pin 7 are of different lengths, that is, one end of the U-shaped locating pin 7 is shorter and the other end is longer.

[0038] To improve the positioning accuracy of the mounting holes of the positioning bushing 6 and the positioning plate 11, a cylindrical pin is added to limit the positioning between the side of the positioning bushing 6 and the mounting hole of the positioning plate 11. The inner wall of the mounting hole of the positioning bushing 6 and the positioning plate 11 are provided with arc-shaped positioning channels adapted to the cylindrical pin. The first template support 4 and the second template support 5 have the same structure.

[0039] When using this fixture, the bracket 1 is fitted to the designated position at the end of the wing 10 where it connects to the wingtip. The mounting holes of the positioning plate 11 are aligned with the positioning holes of the inner plate 101 located inside the end of the wing 10. The U-shaped positioning pin 7 is then inserted from the back of the inner plate 101. The shorter end is inserted into the positioning hole and positioning bushing 6 of the inner plate 101 to fix the inner plate 101 to the positioning plate 11. The first drilling template 2 and the second drilling template 3 are respectively attached to the upper and lower surfaces of the end of the wing 10. The fastening plate 12 is fastened to the aileron hinge 100 of the wing 10 with fastening pins to fix the fastening plate 12 to the wing 10. According to the processing requirements, a single first template bracket 4 and a second template bracket 5 or both can be installed on the bracket 1. The first drilling template 2 and the second drilling template 3 are installed on the corresponding first template bracket 4 and second template bracket 5. When drilling holes on the wing, the drill bit passes through the drilling bushing 8 and drills holes at the predetermined positions of the wing according to the preset hole positions. The mounting holes on one or both sides of the wing are processed according to the selected processing method. After drilling is completed, the first template bracket 4 and the second template bracket 5 are removed, the U-shaped positioning pin 7 is pulled out from the back, and the bracket 1 is removed from the wing 10 to complete the entire drilling process.

[0040] In this embodiment, refer to Figures 1 to 3 The first template bracket 4 and the second template bracket 5 are symmetrically positioned and installed on the upper and lower surfaces of the bracket 1 using fasteners. There are two of each type of bracket, with the two first template brackets 4 symmetrically arranged on the upper surface of the bracket 1 and the two second template brackets 5 symmetrically arranged on the lower surface of the bracket 1. The fasteners are existing threaded locking pins, which facilitate the assembly and disassembly of the first template bracket 4, the second template bracket 5, and the bracket 1.

[0041] In other embodiments, the number of the first template support 4 and the second template support 5 can be set to other numbers, such as 3 or 4. The first template support 4 and the second template support 5 can also be arranged asymmetrically, that is, the first template support 4 and the second template support 5 are staggered with each other. The number and installation position of the first template support 4 and the second template support 5 can be increased or decreased according to the shape and size of the wing and assembly requirements.

[0042] In this embodiment, refer to Figures 1 to 3 , Figures 5 to 9 Both the first drilling template 2 and the second drilling template 3 are equipped with positioning slots 9. Both the first template support 4 and the second template support 5 include a support plate 41 and a limiting plate 42. The support plate 41 is mounted on the support 1, and the limiting plate 42 is connected to the support plate 41. The limiting plates 42 of the first template support 4 and the second template support 5 are inserted into the corresponding positioning slots 9 of the first drilling template 2 and the second drilling template 3 and fixed with fasteners. The fasteners are fastening screws, bolts and nuts, or positioning pins.

[0043] Furthermore, in order to improve the installation positioning accuracy, fasteners can also be selected by using fastening bolts and nuts in combination with positioning pins to position and install the limiting plate 42 and the corresponding first drilling template 2 and second drilling template 3.

[0044] In this embodiment, refer to Figure 1 , Figures 5 to 9 The first drilling template 2 and the second drilling template 3 are provided with limiting baffles 91. The positioning slot 9 is formed by three limiting baffles 91. The limiting baffles 91 can play a certain limiting and blocking role on the limiting plate 42, further ensuring that the limiting plate 42 is not easy to loosen or misalign after installation.

[0045] In this embodiment, the limiting plate 42 and the support plate 41 are connected by bolts, nuts and positioning pins. A total of four positioning pins and bolts are provided, and they are located at the four vertices of the square, which facilitates the detachable connection between the limiting plate 42 and the support plate 41. The positioning connection between the two has good accuracy and is not easy to loosen or misalign.

[0046] In other embodiments, the support plate 41 and the limiting plate 42 are integrally connected by integral casting.

[0047] In this embodiment, refer to Figure 1 , Figure 2 and Figure 10 The top outer wall of the drilling bushing 8 is provided with a clamping port. The second end face of the first drilling template 2 and the second drilling template 3 is equipped with a locking screw 81. The screw head of the locking screw 81 presses against the clamping port of the drilling bushing 8, so that the drilling bushing 8 is not easy to loosen and fall off during subsequent drilling, ensuring that drilling can proceed smoothly.

[0048] In this embodiment, the positioning plate 11 is detachably installed on the lower surface of the bracket 1 by fasteners, which are fastening bolts, nuts and positioning pins. By setting multiple fastening bolts and multiple positioning pins, the positioning plate 11 can be well positioned and installed on the lower surface of the bracket 1, ensuring installation accuracy and preventing loosening or misalignment after installation.

[0049] In this embodiment, refer to Figure 1 and Figure 11 The U-shaped positioning pin 7 is connected to the positioning bushing 6 at one end with a stepped groove 71. The positioning bushing 6 is fitted on the outside of the stepped groove 71 of the U-shaped positioning pin 7, and the stepped opening of the stepped groove 71 abuts against the rear end face of the positioning bushing 6.

[0050] In this embodiment, the positioning bushing 6 is a wear-resistant alloy steel component, which enables the positioning bushing 6 to have good wear resistance and hardness; the bracket 1 is a high-strength aluminum alloy component, which reduces the overall weight while ensuring structural strength; the bracket 1 is provided with a hollow structure, and the number and area of ​​the hollow structure can be determined according to the structural strength simulation results, which further reduces the weight of the tooling without reducing the load-bearing capacity of the bracket 1, making it convenient for operators to handle and install.

[0051] In this embodiment, both the first drilling template 2 and the second drilling template 3 are composed of a first connecting plate, a second connecting plate, and an adjusting plate. One end of the first connecting plate and the second connecting plate has an axial insertion channel. The sides of the first connecting plate, the second connecting plate, and the adjusting plate are provided with several adjusting holes. The adjusting plate is used to connect the first connecting plate and the second connecting plate. Both ends of the adjusting plate are inserted into the insertion channels of the first connecting plate and the second connecting plate, and can move inside the insertion channels. After the first drilling template and the second drilling template are adjusted to the predetermined length position, screws are used to connect with the adjusting holes to lock the first connecting plate, the second connecting plate, and the adjusting plate. This allows the length of the first drilling template 2 and the second drilling template 3 to be adjusted according to the wing assembly requirements, better meeting the assembly and processing requirements of different wing models.

[0052] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A tooling for drilling holes for auxiliary wingtip connections, characterized in that... ,include: The bracket has a first template bracket and a second template bracket installed on its upper and lower surfaces, respectively. The bracket is provided with a positioning plate and a fastening plate. The positioning plate is provided with mounting holes, and the fastening plate is used to connect the aileron hinge of the wing. The drilling template includes a first drilling template and a second drilling template. The first end face of the first drilling template and the second drilling template are provided with a positioning surface that fits with the wing skin profile. The first drilling template and the second drilling template are respectively installed on the first template support and the second template support, and form a wing placement area between them and the upper and lower surfaces of the support. The second end face of the first drilling template and the second drilling template is provided with a drilling bushing along the thickness direction. The drilling bushing is provided with an inner channel that is adapted to the diameter of the installation hole to be processed on the wing. A positioning bushing is installed with an interference fit to the mounting hole; U-shaped locating pins are used to connect the locating bushing and the inner plate located inside the wing tip.

2. The tooling for drilling holes for auxiliary wingtip connections as described in claim 1, characterized in that: The first template bracket and the second template bracket are symmetrically positioned and installed on the upper and lower surfaces of the bracket using fasteners. There are two of each type of bracket, and they are symmetrically arranged on the bracket from left to right.

3. The tooling for drilling holes for auxiliary wingtip connections as described in claim 1, characterized in that: Both the first and second drilling templates are provided with positioning slots. Both the first template support and the second template support include a support plate and a limiting plate. The support plate is installed on the support, and the limiting plate is connected to the support plate. The limiting plates of the first template support and the second template support are inserted into the positioning slots of the corresponding first and second drilling templates and fixed with fasteners.

4. The tooling for drilling holes for auxiliary wingtip connections as described in claim 3, characterized in that: The first and second drilling templates are provided with limiting baffles, and the positioning slot is formed by three limiting baffles.

5. The tooling for drilling holes for auxiliary wingtip connections as described in claim 3, characterized in that: The limiting plate and the support plate are connected by bolts, nuts and positioning pins. Four positioning pins and bolts are provided and are located at the four vertices of the square.

6. The tooling for drilling holes for auxiliary wingtip connections as described in claim 1, characterized in that: The top outer wall of the drill bushing is provided with a clamping port, and the second end face of the first drill template and the second drill template is equipped with a locking screw, the screw head of the locking screw pressing against the clamping port of the drill bushing.

7. The tooling for drilling holes for auxiliary wingtip connections as described in claim 1, characterized in that: The positioning plate is detachably mounted on the lower surface of the bracket by fasteners.

8. The tooling for drilling holes for auxiliary wingtip connections as described in claim 1, characterized in that: The U-shaped positioning pin is connected to the positioning bushing at one end with a stepped groove. The positioning bushing is fitted on the outside of the stepped groove of the U-shaped positioning pin, and the stepped opening of the stepped groove abuts against the rear end face of the positioning bushing.

9. The tooling for drilling wingtip connections for auxiliary wing connections as described in claim 1, characterized in that: The positioning bushing is a wear-resistant alloy steel component, the bracket is a high-strength aluminum alloy component, and the bracket has a hollow structure.

10. The tooling for drilling wingtip connections for auxiliary wing connections as described in claim 1, characterized in that: Both the first and second drilling templates are composed of a first connecting plate, a second connecting plate, and an adjusting plate. One end of the first and second connecting plates has an axial insertion channel. The sides of the first connecting plate, the second connecting plate, and the adjusting plate are provided with several adjusting holes. The adjusting plate is used to connect the first and second connecting plates. Both ends of the adjusting plate are inserted into the insertion channels of the first and second connecting plates, respectively, and can move within the insertion channels. After the first and second drilling templates are adjusted to a predetermined length position, screws are used to connect with the adjusting holes to lock the first connecting plate, the second connecting plate, and the adjusting plate.

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