Flexible drill jig for drilling aircraft stringer

Abstract

The utility model relates to the technical field of aircraft manufacturing auxiliary tools, in particular to a flexible drill jig for drilling an aircraft stringer, which is characterized in that a transverse waist-shaped through hole is formed in a fixed block, a vertical waist-shaped through hole is formed in a jig body, and a drill bushing is arranged at the lower end of the jig body; during use, the die bodies can be arranged on the fixing blocks and move transversely relative to the fixing blocks so as to adjust the distance between every two adjacent die bodies / drill bushings, the die bodies can also move vertically relative to the fixing blocks so as to adjust the edge distance of the drill bushings, and after the positions are adjusted, the die bodies are fixedly connected to the fixing blocks through the fixing structures so as to facilitate follow-up hole making. Therefore, the flexible drill jig is simple in structure, ingenious in design, capable of adjusting and fixing the multiple drill bushings at a time and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft manufacturing auxiliary tools, in particular to a flexible drill jig for aircraft stringer hole making. Background Art

[0002] For aircraft stringer joints at different positions, there are different differences in the hole spacing and hole edge distance of fasteners. When drilling such fastener holes traditionally, a single drill bushing or drill jig is usually used for hole making, which not only affects work efficiency but also increases costs. Content of the Utility Model

[0003] To achieve the above object, the utility model provides a flexible drill jig for aircraft stringer hole making, including:

[0004] A fixed block, on which a horizontal waist-shaped through hole is provided;

[0005] A plurality of die bodies are arranged on the fixed block. A vertical waist-shaped through hole is provided on the die body, and a drill bushing is arranged at the lower end of the die body. The die body can adjust its relative position with the fixed block horizontally and vertically;

[0006] A fixing structure can pass through the horizontal waist-shaped through hole and the vertical waist-shaped through hole, and fixedly connect the die body with the fixed block.

[0007] In some possible embodiments, the die body includes a substrate and side plates respectively arranged on opposite sides of the substrate and both extending downward. The vertical waist-shaped through hole and the drill bushing are both arranged on the side plates, and the vertical waist-shaped through hole is located above the drill bushing. The distance between the two side plates is adapted to the width dimension of the fixed block.

[0008] The fixing structure includes a screw and a nut. The screw passes through the vertical waist-shaped through hole and the horizontal waist-shaped through hole horizontally.

[0009] In some possible embodiments, both the fixed block and the die body are made of iron materials.

[0010] In some possible embodiments, a plurality of positioning grooves are provided on the lower side wall of the horizontal waist-shaped through hole.

[0011] The beneficial effects of the present utility model are as follows: In the flexible drill jig of the present utility model, a horizontal waist-shaped through hole is provided on the fixing block, and a vertical waist-shaped through hole is provided on the die body. A drill bushing is provided at the lower end of the die body. During use, the die body can be placed on the fixing block and moved horizontally relative to the fixing block to adjust the distance between two adjacent die bodies / drill bushings, and can also be moved vertically relative to the fixing block to adjust the edge distance of the drill bushing. After adjusting the position, the die body is fixedly connected to the fixing block through a fixing structure to facilitate subsequent hole making. It can be seen that the flexible drill jig of the present application has a simple structure and ingenious design, can adjust and fix multiple drill bushings at one time, and has high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 is a three-dimensional structural schematic diagram of the flexible drill jig provided by the embodiment of the present utility model;

[0014] Figure 2 is a three-dimensional structural schematic diagram of the die body provided by the embodiment of the present utility model.

[0015] Reference numerals: fixing block 1, horizontal waist-shaped through hole 11, die body 2, vertical waist-shaped through hole 21, drill bushing 22, base plate 23, side plate 24, screw 31, nut 32. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following will combine the drawings in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0017] Refer to Figure 1A flexible drill jig for aircraft stringer hole making is shown. It includes a fixing block 1, several die bodies 2 and a fixing structure. A drill bushing 22 is provided at the lower end of the die body 2. The several die bodies 2 can all slide on the fixing block 1 to adjust the distance between the drill bushings 22, that is, to adjust the hole pitch. A transverse waist-shaped through hole 11 is opened along the length direction of the fixing block 1. A vertical waist-shaped through hole 21 is opened on the die body 2. The die body 2 can also move vertically relative to the fixing block 1 to adjust the hole edge distance. After adjustment, the vertical waist-shaped through hole 21 corresponds to the transverse waist-shaped through hole 11. Then, the fixing structure passes through the vertical waist-shaped through hole 21 and the transverse waist-shaped through hole 11 and fixedly connects the die body 2 to the fixing block 1. It can be seen that the flexible drill jig of the present utility model can adjust and fix multiple drill bushings 22 at one time, that is, it can adjust the hole pitch and hole edge distance of multiple holes, improve work efficiency, and the flexible drill jig has a simple structure, ingenious design and low manufacturing cost.

[0018] In some possible embodiments, referring to Figure 2 As shown, the die body 2 includes a base plate 23 and two side plates 24 respectively arranged on opposite sides of the base plate 23 and both extending downward. The side plates 24 are integrally formed with the base plate 23. The vertical waist-shaped through hole 21 and the drill bushing 22 are both arranged on the two side plates 24, and the vertical waist-shaped through hole 21 is located above the drill bushing 22. The distance between the two side plates 24 also matches the width dimension of the fixing block 1. The die body 2 can be covered on the fixing block 1, that is, the lower end surface of the base plate 23 overlaps the upper end surface of the fixing block 1. The two side plates 24 restrict its longitudinal movement relative to the fixing block 1. Then, the fixing structure passes through the transverse waist-shaped through hole 11 and the vertical waist-shaped through hole 21 to prevent the die body 2 from separating from the fixing block 1. Therefore, the problem of loss of the die body 2 can be avoided.

[0019] In some possible embodiments, referring to Figure 1 As shown, the fixing structure includes a screw 31 and a nut 32. One end of the screw 31 forms a nut. The outer diameter dimension of the nut is larger than the width dimension of the vertical waist-shaped through hole 21. The other end of the screw 31 is provided with an external thread that cooperates with the nut 32. After one end of the screw 31 passes through the vertical waist-shaped through hole 21 of one of the side plates 24, the transverse waist-shaped through hole 11 of the fixing block 1 and the vertical waist-shaped through hole 21 of the other side plate 24 in sequence, the nut 32 is screwed thereon. After adjusting the position of the die body 2 / drill bushing 22 relative to the fixing block 1 up and down, that is, adjusting the hole edge distance, then tighten the nut 32. At this time, the nut 32 and the nut respectively clamp the two side plates 24, and the screw 31 cannot move up and down relative to the fixing block 1. Therefore, the die body 2 / drill bushing 22 can be restricted from moving up and down relative to the fixing block 1. Furthermore, after tightening the nut 32, the die body 2 undergoes a slight elastic deformation to clamp the fixing block 1 by the two side plates 24, thereby restricting the die body 2 / drill bushing 22 from moving horizontally relative to the fixing block 1.

[0020] In some possible embodiments, both the fixing block 1 and the die body 2 can be made of iron materials, specifically, conventional carbon steel materials, and both the fixing block 1 and the die body 2 can be obtained by casting or machining, with low production costs.

[0021] In some possible embodiments, a plurality of positioning grooves (not shown in the figure) are provided on the lower side wall of the horizontal waist-shaped through hole 11. Such a structure is suitable for the case where the hole pitch is fixed, that is, the screw 31 is inserted and placed in different positioning grooves according to actual production requirements. This method has the advantage of high drilling accuracy.

[0022] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A flexible drilling template for making holes in aircraft long stringers, characterized in that: include: A fixing block (1), wherein the fixing block (1) is provided with a transverse waist-shaped through hole (11); A plurality of mold bodies (2) are arranged on the fixed block (1), the mold bodies (2) are provided with vertical waist-shaped through holes (21), the lower ends of the mold bodies (2) are provided with drill sleeves (22), and the relative positions of the mold bodies (2) and the fixed block (1) can be adjusted in the horizontal and vertical directions; A fixing structure can pass through the transverse waist-shaped through hole (11) and the vertical waist-shaped through hole (21) and fix the mold body (2) to the fixing block (1).

2. A flexible drilling template for making holes in aircraft long stringers according to claim 1, characterized in that: The mold body (2) comprises a base plate (23) and side plates (24) which are arranged on opposite sides of the base plate (23) and extend downwards, the vertical waist-shaped through hole (21) and the drill sleeve (22) are both arranged on the side plates (24), and the vertical waist-shaped through hole (21) is located above the drill sleeve (22), and the distance between the two side plates (24) is adapted to the width of the fixing block (1).

3. The flexible drilling template for making holes in aircraft long stringers according to claim 1, characterized in that: The fixing structure comprises a screw rod (31) and a nut (32), and the screw rod (31) passes through the vertical waist-shaped through hole (21) and the transverse waist-shaped through hole (11) in the transverse direction.

4. The flexible drilling template for making holes in aircraft long stringers according to claim 1, characterized in that: The fixing block (1) and the mold body (2) are both made of iron material.

5. The flexible drilling template for making holes in aircraft stringers according to claim 1, characterized in that: The lower side wall of the transverse waist-shaped through hole (11) is provided with a plurality of positioning grooves.

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