Auxiliary drilling tool for aircraft structure maintenance

Abstract

An auxiliary hole making tool for airplane structure maintenance comprises an upper clamping strip, a lower clamping strip, a supporting plate hole making head clamped at the same end of the upper clamping strip and the lower clamping strip and a hole guiding assembly arranged at the other end of the upper clamping strip and the other end of the lower clamping strip, wherein the upper clamping strip and the lower clamping strip are oppositely arranged up and down. The upper clamping strip, the lower clamping strip and the supporting plate hole forming head are hinged through a hinge shaft, and an obstacle avoiding protrusion is arranged on the side, close to the hole guiding assembly, of the upper clamping strip. The hole guiding assembly comprises a drilling guide sleeve arranged on the upper clamping strip and a positioning bolt arranged on the lower clamping strip, and the drilling guide sleeve and the positioning bolt are concentric. The supporting plate hole forming head comprises a transverse plate and a longitudinal plate, a guide column is vertically arranged on the longitudinal plate in a penetrating mode, a positioning column is vertically arranged on the top face of the longitudinal plate in a pluggable mode, and a pair of positioning guide holes are symmetrically formed in the two ends of the longitudinal plate of the supporting plate hole forming head. According to the auxiliary hole forming tool, a fastener hole or a supporting plate nut hole can be accurately and efficiently copied, and the repairing or replacing work of a damaged component of an airplane is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft ground maintenance, in particular to an auxiliary hole-making tool used for aircraft structure maintenance. Background Art

[0002] When aircraft maintenance bases perform routine maintenance and modification work on aircraft, they often involve repairing or replacing damaged aircraft components. A large number of repairs involve making holes in two types of damaged components. One is to copy the fastener holes, and the other is to copy the tray nut holes (there are two situations for making holes in tray nuts, one is to make double holes on both sides of the center hole, and the other is to make double holes on one side of the center hole). During the copying, the damaged aircraft components (damaged components) will be replaced by new components. The new components do not have fastener holes, and holes need to be made in the new components according to the actual installation position. In the process of making holes, some old holes (the original holes of the original damaged components) are on the inside, which is a position that the air drill cannot approach and make holes (for example, it is impossible to drill holes in the new component from the bottom of the component with the help of the original holes), so it is necessary to accurately lead the position of the original holes of the original damaged components to a position that the air drill can access before making new holes. Moreover, according to many years of aircraft maintenance experience, due to the mutual running-in of various aircraft components, the precision of drilling holes after disassembling the original parts is lower than the precision of drilling holes in situ, so the duplication of fastener holes needs to be done in situ. At present, there are no special tools for precise drilling of these damaged components, which makes the repair or replacement of damaged components in aircraft maintenance bases inefficient and low-precision, which can easily cause the scrapping of new parts and waste the maintenance costs of airlines. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an auxiliary hole-making tool for aircraft structure maintenance to overcome the deficiencies in the prior art.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] An auxiliary hole-making tool for aircraft structure maintenance comprises an upper clamping strip and a lower clamping strip arranged relatively to each other, a support plate hole-making head clamped on the same end of the upper clamping strip and the lower clamping strip, and a hole-guiding assembly arranged at the other end of the upper clamping strip and the lower clamping strip; the upper clamping strip, the lower clamping strip and the support plate hole-making head are hingedly connected by a hinge shaft; the hole-guiding assembly comprises a drilling guide sleeve penetratingly arranged on the upper clamping strip and a positioning bolt penetratingly arranged on the lower clamping strip, and the drilling guide sleeve and the positioning bolt are concentrically and relatively arranged.

[0006] Furthermore, the support plate hole making head comprises a transverse plate and a longitudinal plate, the transverse plate and the longitudinal plate are arranged in a T shape, and the transverse plate of the support plate hole making head is clamped between the upper clamping plate and the lower clamping plate.

[0007] Further, a guide post is vertically penetrated through the vertical plate of the pallet hole-making head. A positioning post is vertically inserted and removed at a position beside the guide post on the top surface of the vertical plate of the pallet hole-making head. A pair of positioning guide holes are symmetrically arranged at both ends of the vertical plate of the pallet hole-making head. The pair of positioning guide holes includes a first positioning guide hole and a second positioning guide hole. The pair of positioning guide holes are located outside the guide post and the positioning post.

[0008] Further, an obstacle avoidance protrusion is arranged on one side of the upper clamping strip close to the pilot hole assembly.

[0009] Further, an upper shaft hole is arranged on one side of the upper clamping strip close to the pallet hole-making head for the hinge shaft to pass through; an upper waist-shaped positioning hole is also arranged beside the upper shaft hole on the upper clamping strip for the waist-shaped positioning pin to pass through.

[0010] Further, a positioning sleeve is penetrated through one side of the lower clamping strip close to the pilot hole assembly for the positioning bolt to be screwed, and the positioning sleeve is concentric and oppositely arranged with the drilling guide sleeve.

[0011] Further, a lower shaft hole is arranged on one side of the lower clamping strip close to the pallet hole-making head for the hinge shaft to pass through; a lower waist-shaped positioning hole is also arranged beside the lower shaft hole on the lower clamping strip for the waist-shaped positioning pin to pass through, and the lower waist-shaped positioning hole corresponds to the upper waist-shaped positioning hole.

[0012] Further, a middle shaft hole is arranged on the transverse plate of the pallet hole-making head for the hinge shaft to pass through. A U-shaped clamping opening for the waist-shaped positioning pin to pass through is formed at one end of the transverse plate of the pallet hole-making head facing the pilot hole assembly, and the U-shaped clamping opening corresponds to the upper waist-shaped positioning hole and the lower waist-shaped positioning hole.

[0013] Further, the lower half section of the positioning bolt is provided with a thread for screwing with the positioning sleeve, and the upper half section of the positioning bolt is a smooth rod.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1) An auxiliary hole-making tool for aircraft structure maintenance in this case converts the situation where the drilling space is limited from below originally into the situation of drilling from the open space above through the upper clamping strip and the lower clamping strip, which is beneficial to accurately and efficiently replicate the fastener holes or pallet nut holes, and effectively improves the repair or replacement work of damaged aircraft components.

[0016] 2) An auxiliary hole-making tool for aircraft structure maintenance in this case is provided with an obstacle avoidance protrusion on the upper clamping strip, so that the obstacle avoidance protrusion of the upper clamping plate can be laterally turned in to effectively avoid the interference of the aircraft structure and ensure the smooth progress of the replication work of the fastener holes.

[0017] 3) An auxiliary hole-making tool for aircraft structure maintenance in this case, its backing plate hole-making head, drilling guide sleeve, and positioning bolt are all replaceable parts, which can be adapted to fittings of different diameters according to the hole-making requirements, and are applicable to Boeing, Airbus, and other various aircraft models, with good applicability.

[0018] 4) An auxiliary hole-making tool for aircraft structure maintenance in this case has a simple and stable structure, is easy to disassemble and assemble, is small in size and light in weight, is convenient for storage and collection, and is beneficial to tool management.

[0019] In order to understand the present utility model more clearly, the preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. Description of the Drawings

[0020] Figure 1 、 Figure 2 is the three-dimensional effect diagram of the present utility model;

[0021] Figure 3 is the structural schematic diagram of the present utility model when viewed from the side;

[0022] Figure 4 is the structural schematic diagram of the present utility model when viewed from above;

[0023] Figure 5 is the exploded view of the present utility model;

[0024] Figure 6 is the structural schematic diagram of the backing plate hole-making head in the present utility model.

[0025] Reference Signs in the Drawings:

[0026] 1 - upper clamping strip, 2 - lower clamping strip, 3 - backing plate hole-making head, 4 - pilot hole assembly, 5 - hinge shaft, 6 - waist-shaped positioning pin; 7 - guide post, 8 - positioning post; 11 - obstacle avoidance protrusion, 12 - upper shaft hole, 13 - upper waist-shaped positioning hole; 21 - positioning bushing, 22 - lower shaft hole, 23 - lower waist-shaped positioning hole; 31 - cross plate, 32 - longitudinal plate, 33 - middle shaft hole, 34 - U-shaped clamping opening, 35 - guide post, 36 - positioning post, 371 - first positioning guide hole, 372 - second positioning guide hole; 41 - drilling guide sleeve, 42 - positioning bolt, 421 - smooth rod. Detailed Embodiments

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0028] In addition, terms such as "first", "second", etc. are only used for descriptive purposes, mainly to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and should not be construed as indicating or implying relative importance.

[0029] In addition, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements; for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Please refer to Figures 1-6 , the present utility model provides an auxiliary hole-making tool for aircraft structure maintenance, including an upper clamping strip 1 and a lower clamping strip 2 arranged oppositely up and down, a backing plate hole-making head 3 clamped at the same end of the upper clamping strip 1 and the lower clamping strip 2, and a pilot hole assembly 4 arranged at the other end of the upper clamping strip 1 and the lower clamping strip 2; the upper clamping strip 1, the lower clamping strip 2 and the backing plate hole-making head 3 are hinged by a hinge shaft 5, so that the upper clamping strip 1, the lower clamping strip 2 and the backing plate hole-making head 3 can rotate relative to each other; the pilot hole assembly 4 includes a drilling guide sleeve 41 penetrating through the upper clamping strip 1 and a positioning bolt 42 penetrating through the lower clamping strip 2, and the drilling guide sleeve 41 and the positioning bolt 42 are concentric and oppositely arranged.

[0031] On one side of the upper clamping strip 1 close to the pilot hole assembly 4, an obstacle avoidance protrusion 11 is arranged; on one side of the upper clamping strip 1 close to the backing plate hole-making head 3, an upper shaft hole 12 is arranged for the hinge shaft 5 to pass through; on the upper clamping strip 1, a waist-shaped positioning hole 13 is also arranged beside the upper shaft hole 12 for a waist-shaped positioning pin 6 to pass through.

[0032] For the lower clamping strip 2, a positioning sleeve 21 is provided through the side close to the hole guiding component 4 for screwing the positioning bolt 42. The positioning sleeve 21 is concentric and oppositely arranged with the drilling guide sleeve 41; on the side of the lower clamping strip 2 close to the hole-making head 3 of the support plate, a lower shaft hole 22 is provided for the hinge shaft 5 to pass through; beside the lower shaft hole 22 on the lower clamping strip 2, a lower waist-shaped positioning hole 23 is also provided for the waist-shaped positioning pin 6 to pass through, and the lower waist-shaped positioning hole 23 corresponds to the upper waist-shaped positioning hole 13.

[0033] The hole-making head 3 of the support plate includes a transverse plate 31 and a longitudinal plate 32, and the transverse plate 31 and the longitudinal plate 32 are arranged in a T shape.

[0034] The transverse plate 31 of the hole-making head 3 of the support plate is clamped between the upper clamping plate and the lower clamping plate. A middle shaft hole 33 is provided on the transverse plate 31 of the hole-making head 3 of the support plate for the hinge shaft 5 to pass through. At one end of the transverse plate 31 of the hole-making head 3 of the support plate facing the hole guiding component 4, a U-shaped clamping opening 34 is provided for the waist-shaped positioning pin 6 to pass through, and the U-shaped clamping opening 34 corresponds to the upper waist-shaped positioning hole 13 and the lower waist-shaped positioning hole 23.

[0035] On the longitudinal plate 32 of the hole-making head 3 of the support plate, a guiding column 35 is vertically penetrated. On the top surface of the longitudinal plate 32 of the hole-making head 3 of the support plate, a positioning column 36 is vertically inserted and removed beside the guiding column 35. At both ends of the longitudinal plate 32 of the hole-making head 3 of the support plate, a pair of positioning guide holes are symmetrically arranged. The pair of positioning guide holes includes a first positioning guide hole 371 and a second positioning guide hole 372, and the pair of positioning guide holes are located outside the guiding column 35 and the positioning column 36.

[0036] The positioning bolt 42 is a hand-tightening bolt. The lower half of the positioning bolt 42 is provided with a thread for screwing with the positioning sleeve 21, and the upper half of the positioning bolt 42 is a smooth rod 421. During actual use, the smooth rod 421 of the positioning bolt 42 passes through the positioning sleeve 21 and is inserted into the corresponding through hole of the damaged aircraft component. In this embodiment, the positioning bolt 42 is a replaceable part, and by replacing the positioning bolts 42 with different diameters, different models of damaged fasteners can be adapted.

[0037] Working principle:

[0038] 1. Assembly of this tool: The hole-making head 3 of the pallet is detachably installed between the upper clamping plate and the lower clamping plate. The hinge shaft 5 sequentially passes through the upper shaft hole 12 of the upper clamping plate, the central shaft hole 33 of the cross plate 31 of the hole-making head 3 of the pallet, and the lower shaft hole 22 of the lower clamping plate; the waist-shaped positioning pin 6 can also sequentially pass through the upper waist-shaped positioning hole 13 of the upper clamping plate, the U-shaped clamping opening 34 of the cross plate 31 of the hole-making head 3 of the pallet, and the lower waist-shaped positioning hole 23 of the lower clamping plate. When the waist-shaped positioning pin 6 is not inserted yet, the upper clamping plate can rotate around the hinge shaft 5, so that the obstacle avoidance protrusion 11 of the upper clamping plate can be laterally turned in to effectively avoid the interference of the aircraft structure; when the waist-shaped positioning pin 6 is inserted, the upper clamping plate, the hole-making head 3 of the pallet and the lower clamping plate are linearly positioned by the waist-shaped positioning pin 6 of the hinge shaft 5, ensuring that the upper clamping plate and the lower clamping plate are relatively up and down, so as to ensure the concentricity of the drilling guide sleeve 41 and the positioning bolt 42.

[0039] 2. When making a blind hole for a fastener hole, the pilot hole assembly 4 approaches the original damaged fastener, the smooth rod 421 of the positioning bolt 42 is inserted into the old blind hole, and the new fastener is clamped between the upper clamping strip 1 and the lower clamping strip 2. Since the drilling guide sleeve 41 of the upper clamping strip 1 is concentric with the positioning bolt 42 of the lower clamping strip 2, at this time, the air drill can make a corresponding new hole for the new fastener from the open upper side. If there is interference from aircraft components, the waist-shaped positioning pin 6 can be not inserted first, so that the upper clamping plate can be laterally turned in, and the interference of the aircraft structure can be avoided through the obstacle avoidance protrusion 11 of the upper clamping plate. After the upper clamping strip 1 is turned in place, the waist-shaped positioning pin 6 is inserted to ensure the concentricity of the drilling guide sleeve 41 and the positioning bolt 42, and then the air drill is used to make a 1 / 8 new hole for positioning the new fastener. Finally, this tool is removed and the hole is reamed to the final shape. The positioning bolt 42 is a replaceable part and can be adapted to positioning bolts 42 with different diameters according to the hole-making requirements.

[0040] 3. When making holes for the pallet nut, if it is the case of making two holes on both sides of the center hole, first pull out the positioning post 36, then align the guiding post 35 of the longitudinal plate 32 of the hole-making head 3 of the pallet with the center hole of the new part, and make the first new hole on the new part through the first positioning guide hole 371. Then rotate this tool 180 degrees around the guiding post 35, insert the positioning post 36 into the first new hole, and then make the second new hole on the new part through the first positioning guide hole 371 again.

[0041] 4. When making holes for the pallet nut, if it is the case of making two holes on one side of the center hole (eccentric hole), first pull out the positioning post 36, align the guiding post 35 with the center hole of the new part, first make the first new hole (inner hole) on the new part through the first positioning guide hole 371. Then rotate this tool 180° around the guiding post 35, insert the positioning post 36 into the first new hole (inner hole) just drilled, and then make the second new hole (outer hole) through the second positioning guide hole 372, so that two eccentric holes can be made on the new pallet nut.

[0042] Compared with the prior art, an auxiliary hole-making tool for aircraft structure maintenance in this case can accurately and efficiently replicate fastener holes or blind nut holes, effectively improving the repair or replacement work of damaged aircraft components.

[0043] The above-described embodiments merely represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. An auxiliary hole-making tool for aircraft structure maintenance, characterized in that: It includes an upper clamping strip (1) and a lower clamping strip (2) arranged opposite to each other up and down, a back-up hole-making head (3) clamped at the same end of the upper clamping strip (1) and the lower clamping strip (2), and a pilot hole assembly (4) arranged at the other end of the upper clamping strip (1) and the lower clamping strip (2); the upper clamping strip (1), the lower clamping strip (2) and the back-up hole-making head (3) are hinged through a hinge shaft (5); the pilot hole assembly (4) includes a drilling guide sleeve (41) penetrating through the upper clamping strip (1) and a positioning bolt (42) penetrating through the lower clamping strip (2), and the drilling guide sleeve (41) and the positioning bolt (42) are concentric and arranged opposite to each other.

2. The auxiliary hole-making tool for aircraft structure maintenance according to claim 1, characterized in that: The back-up hole-making head (3) includes a transverse plate (31) and a longitudinal plate (32), the transverse plate (31) and the longitudinal plate (32) are arranged in a T shape, and the transverse plate (31) of the back-up hole-making head (3) is clamped between the upper clamping plate and the lower clamping plate.

3. The auxiliary hole-making tool for aircraft structure maintenance according to claim 2, characterized in that: A guide post (35) is vertically penetrated through the longitudinal plate (32) of the back-up hole-making head (3), a positioning post (36) is vertically inserted and removed at a position beside the guide post (35) on the top surface of the longitudinal plate (32) of the back-up hole-making head (3), and a pair of positioning guide holes are symmetrically arranged at both ends of the longitudinal plate (32) of the back-up hole-making head (3), and the pair of positioning guide holes includes a first positioning guide hole (371) and a second positioning guide hole (372), and the pair of positioning guide holes are located outside the guide post (35) and the positioning post (36).

4. The auxiliary hole-making tool for aircraft structure maintenance according to claim 3, characterized in that: An obstacle avoidance protrusion (11) is arranged on one side of the upper clamping strip (1) close to the pilot hole assembly (4).

5. The auxiliary hole-making tool for aircraft structure maintenance according to claim 4, characterized in that: One side of the upper clamping strip (1) close to the back-up hole-making head (3) is provided with an upper shaft hole (12) for the hinge shaft (5) to pass through; a upper waist-shaped positioning hole (13) is also arranged beside the upper shaft hole (12) on the upper clamping strip (1) for a waist-shaped positioning pin (6) to pass through.

6. The auxiliary hole-making tool for aircraft structure maintenance according to claim 5, characterized in that: A positioning screw sleeve (21) is penetrated through one side of the lower clamping strip (2) close to the pilot hole assembly (4) for the positioning bolt (42) to be screwed, and the positioning screw sleeve (21) is concentric and arranged opposite to the drilling guide sleeve (41).

7. The auxiliary hole-making tool for aircraft structure maintenance according to claim 6, characterized in that: One side of the lower clamping strip (2) close to the back-up hole-making head (3) is provided with a lower shaft hole (22) for the hinge shaft (5) to pass through; a lower waist-shaped positioning hole (23) is also arranged beside the lower shaft hole (22) on the lower clamping strip (2) for a waist-shaped positioning pin (6) to pass through, and the lower waist-shaped positioning hole (23) corresponds to the upper waist-shaped positioning hole (13).

8. An auxiliary hole-making tool for aircraft structure maintenance according to claim 7, characterized in that: A middle shaft hole (33) is arranged on the transverse plate (31) of the back-up hole-making head (3) for the hinge shaft (5) to pass through, and a U-shaped clamping opening (34) is opened at one end of the transverse plate (31) of the back-up hole-making head (3) facing the pilot hole assembly (4) for the waist-shaped positioning pin (6) to pass through, and the U-shaped clamping opening (34) corresponds to the upper waist-shaped positioning hole (13) and the lower waist-shaped positioning hole (23).

9. An auxiliary hole-making tool for aircraft structure maintenance according to claim 8, characterized in that: The lower half section of the positioning bolt (42) is provided with threads for screwing with the positioning screw sleeve (21), and the upper half section of the positioning bolt (42) is a smooth rod (421).

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