A guide device for butt-jointing holes of middle and outer wings of an expanded-hinged aircraft and a method for using the same

Abstract

The embodiment of the present invention discloses a guide device for expanding and reaming the docking holes of the middle and outer wings of an aircraft and a method for using the same, including a fixing member and a positioning pin; the fixing member is a "J"-shaped structure, a spline opening is provided at the bottom center of the fixing member, and strip-shaped openings are provided at both ends of the fixing member, and the opening portion of the fixing member can be fixed to a part of the middle wing by bolts and nuts; a guide hole that passes through from top to bottom is provided in the middle of the positioning pin, one end of the positioning pin is provided as a large head, and the other end of the positioning pin is provided as a spline portion; wherein the spline portion can be inserted into the spline opening; wherein the middle part of the reamer is provided with a reamer blade portion, a drilling cutting portion, and a guide rod portion in sequence downward. By providing a positioning pin, the positioning pin is inserted into the docking hole that needs to be expanded and reamed, and the reamer can be guided to ream the hole through the guide hole on the positioning pin, which not only reduces the time required for centering and improves efficiency; but also can further improve coaxiality and precision.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical auxiliary processing, and in particular to a guide device for butt-jointing holes of middle and outer wings of an expanded-hinged aircraft and a use method thereof. Background Art

[0002] The full name of the mid-wing is the central wing box, also called the central wing, which refers to the middle section of the wing, and the main wing is connected to this section. On large aircraft, the mid-wing is integrated with the fuselage and connected to the engine nacelle and landing gear.

[0003] The central wing box is a box-shaped structural member that connects the left and right wings to form a complete wing. It is located inside the fuselage. Its main function is to serve as a connecting box section between the left and right wings, bearing the lift, bending moment, torque and other loads transmitted from the left and right wings; at the same time, it serves as a connecting box section between the wing and the fuselage, balancing the fuselage load; and it is also used as a fuel tank. The central wing box is actually an integrated fuel tank that integrates the load-bearing function and the fuel tank function.

[0004] The connection between the center wing and the outer wing is usually riveted, and the docking hole of the center wing is subjected to force and vibration during the flight of the aircraft, and the hole wall is worn and squeezed, which will lead to hole fatigue and hole size deviation. When the aircraft is overhauled, it is necessary to reame the hole.

[0005] When reaming holes, particularly good positioning accuracy is required, which requires the use of docking hole guide devices. It is necessary to ensure that the positioning accuracy of the guide device reaches an extremely high level and accurately determine the position of the docking hole. The error is usually controlled within a very small range, such as ±0.05mm or even smaller, to ensure that the central wing can be accurately docked with other components. Otherwise, the structural gap may be too large or too small, affecting the overall performance of the aircraft.

[0006] It is also necessary to ensure the concentricity of the docking hole and the axis of the relevant components so that the connecting parts can pass through the docking hole smoothly to avoid uneven force caused by eccentricity and reduce structural strength. Generally, the concentricity deviation is required to be no more than ±0.03mm.

[0007] Since reaming requires extremely high positioning accuracy, it is inevitably accompanied by vibration, and reaming can basically only be done manually, it is difficult for ordinary guide devices to be precise and the auxiliary accuracy of reaming cannot be further improved. Therefore, we propose a guide device for expanding and reaming the docking holes of the middle and outer wings of aircraft and a method for using the same. Summary of the invention

[0008] In view of this, the present invention provides a guide device for expanding and reamed aircraft mid-wing butt holes and a method of using the same, which is used to solve the problem that the existing aircraft mid-wing butt hole guide devices in the prior art cannot further improve the reaming accuracy.

[0009] A guide device for a butt-jointing hole in an expanded and hinged aircraft mid-wing and outer-wing, comprising a fixing member and a positioning pin;

[0010] The fixing piece is a "J"-shaped structure, a spline opening is provided at the bottom center of the fixing piece, strip-shaped openings are provided at both ends of the fixing piece, and the opening portion of the fixing piece can be fixed to the middle wing part by bolts and nuts;

[0011] A guide hole is provided in the middle of the positioning pin, which passes through the positioning pin from top to bottom. One end of the positioning pin is provided as a large head, and the other end of the positioning pin is provided as a spline portion. The spline portion can be inserted into the spline opening, thereby limiting the rotation of the positioning pin.

[0012] It also includes a reamer, wherein a reamer blade portion, a drilling cutting portion and a guide rod portion are sequentially arranged downward from the middle portion of the reamer, wherein the guide rod portion can be smoothly inserted into the guide hole of the positioning pin.

[0013] Preferably, the chip groove between the reamer blade and the drilling cutting portion is communicated.

[0014] Preferably, the above also includes a blowing piece, which includes a flat sealed shell with a hollow interior, the flat sealed shell is arranged as a U-shaped structure, the top surface of the flat sealed shell is connected with a nozzle, the top surface of the flat sealed shell is also connected with a soft air pipe, and one end of the soft air pipe is connected to a compressed air source; the blowing piece is fixedly installed inside the "J"-shaped opening of the fixing part, and enables the nozzle to be aligned with one end of the positioning pin.

[0015] Preferably, a sheet-shaped magnet is fixedly connected to the bottom of the flat sealed shell, and the fixing piece is made of iron, ordinary steel or high-carbon steel that can be attracted by the magnet, and the flat sealed shell can be attracted and fixed on the fixing piece by the magnet.

[0016] Preferably, a universal bamboo tube is fixedly connected to the top surface of the flat sealed shell, one end of the universal bamboo tube is communicated with the interior of the flat sealed shell, and the other end of the universal bamboo tube is provided with an air jet.

[0017] Preferably, the lower end of the above-mentioned positioning pin is provided with a thin-diameter portion, the lower part of the thin-diameter portion is provided with a convex ring, and the upper part of the convex ring is provided with two symmetrically arranged smooth protrusions; it also includes an elastic plastic clip, the elastic plastic clip is arranged as a U-shaped structure, the U-shaped mouth of the elastic plastic clip can be clamped on the thin-diameter portion, the elastic plastic clip is provided with an inclined surface, the inclined surface is provided with a recess that can cooperate with the protrusion, and the lower end of the positioning pin can be clamped by the elastic plastic clip to prevent the positioning pin from moving upward excessively.

[0018] Preferably, the upper and lower heights of the spline portion are smaller than the upper and lower depths of the spline opening, so as to prevent the elastic plastic clip from being obstructed and being unable to be smoothly clamped on the thin-diameter portion.

[0019] Preferably, the above-mentioned locating pin is made of aluminum-magnesium alloy, aluminum alloy, magnesium alloy, aluminum-zinc alloy, copper-zinc alloy, copper-tin alloy, copper-nickel alloy or manganese-copper alloy, wherein the hardness of the locating pin is lower than the hardness of the wing material of the aircraft; the locating pin can provide energy absorption and shock absorption.

[0020] A method for using a guide device for a butt joint hole in an outer wing of an expansion-hinged aircraft, using the above-mentioned guide device for a butt joint hole in an outer wing of an expansion-hinged aircraft, specifically comprises the following steps:

[0021] S1. Install the positioning pin in the butt hole that needs to be reamed;

[0022] S2, put the spline mouth of the fixing piece on the spline part of one end of the positioning pin to limit the rotation of the positioning pin;

[0023] S3. Fix the fixing part to the middle wing part by bolts and nuts;

[0024] S4. Install the reamer on the drill rig, operate the drill rig to align with the guide hole downwards to test the hole, align the guide rod part with the guide hole and test the insertion and removal up and down until it can be inserted and removed smoothly, and then lock the position of the drill rig;

[0025] S5, connect to the compressed air source for rapid air supply, which can provide heat dissipation when reaming;

[0026] S6. Operate the drilling rig to press down and feed, and perform reaming operation. The operation process is completed in one step.

[0027] Preferably, when reaming, the drilling speed of the drill is controlled within the range of 150-120 r / min, and the feed rate is controlled within the range of 0.1-0.5 mm / r.

[0028] Implementing the embodiments of the present invention will have the following beneficial effects:

[0029] After adopting the above-mentioned expansion aircraft middle and outer wing docking hole guide device;

[0030] By setting a positioning pin, inserting the positioning pin into the butt hole that needs to be reamed, the guide hole on the positioning pin can guide the reamer to ream the hole, which not only reduces the time required for centering and improves efficiency; but also can further improve the coaxiality;

[0031] At the same time, using the guide hole to guide the reamer can improve stability, and the positioning pin is made of aluminum-magnesium alloy, aluminum alloy, magnesium alloy, aluminum-zinc alloy, copper-zinc alloy, copper-tin alloy, copper-nickel alloy or manganese-copper alloy, etc., the hardness of these alloys is lower than the hardness of the aircraft wing material; and it can provide energy absorption and shock absorption, avoid the reamer from floating when reaming, improve stability, and avoid the formation of elliptical holes or trumpet holes when reaming, thereby improving the reaming accuracy;

[0032] By setting up the blowing piece, the positioning pin can be cooled when reaming, avoiding the positioning pin and the reamer from generating too much heat and not being able to dissipate it in time when reaming, maintaining temperature balance, reducing the possibility of deformation of the positioning pin, and maintaining stability during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] in:

[0035] Figure 1 A schematic diagram of the structure of a reamer and a positioning pin in one embodiment;

[0036] Figure 2 is a schematic structural diagram of a fixing member and a part of a middle wing in one embodiment;

[0037] Figure 3 is a schematic structural diagram of a fixing member in one embodiment;

[0038] Figure 4 A schematic diagram of the structure of a blowing piece in one embodiment;

[0039] Figure 5 A schematic diagram of the structure of a universal bamboo tube in one embodiment;

[0040] Figure 6 is a schematic structural diagram of a positioning pin in an embodiment;

[0041] Figure 7 FIG. 4 is a schematic diagram of the structure of an elastic plastic clip in an embodiment.

[0042] Reference numerals:

[0043] 100, reamer; 101, reamer blade portion; 102, drilling and cutting portion; 103, guide rod insertion portion;

[0044] 200, positioning pin; 201, guide hole; 202, large head; 203, spline part; 204, thin diameter part; 205, protrusion; 206, raised ring; 300, middle wing part; 301, docking hole;

[0045] 400, fixing member; 401, spline opening; 402, opening; 500, bolt; 501, nut;

[0046] 600, blowing piece; 601, flat sealed housing; 602, jet head; 603, soft air pipe; 604, magnet; 605, universal bamboo tube; 606, jet port;

[0047] 700, elastic plastic clip; 701, inclined surface; 702, notch. DETAILED DESCRIPTION

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0051] Embodiment 1:

[0052] See also Figure 1-Figure 7 A guide device for docking holes of middle and outer wings of an expanded and hinged aircraft includes a fixing member 400 and a positioning pin 200, wherein the fixing member 400 is a "J"-shaped structure, a spline opening 401 is provided at the bottom center of the fixing member 400, and strip-shaped openings 402 are provided at both ends of the fixing member 400, and the opening 402 of the fixing member 400 can be fixed on the middle wing part 300 by bolts 500 and nuts 501.

[0053] like Figure 1 As shown in the figure, a guide hole 201 is opened in the middle of the locating pin 200 and passes through from top to bottom. One end of the locating pin 200 is set as a large head 202, and the other end of the locating pin 200 is set as a spline part 203; wherein the spline part 203 can be inserted into the spline mouth 401, thereby limiting the rotation of the locating pin 200.

[0054] Specifically, Figure 1 As shown in , it also includes a reamer 100, wherein the middle part of the reamer 100 is respectively provided with a reamer blade portion 101, a drilling cutting portion 102 and a guide rod portion 103 in sequence downward, wherein the guide rod portion 103 can be smoothly inserted into the guide hole 201 of the positioning pin 200.

[0055] Among them, it should be noted that the reaming accuracy finally formed by the present technical solution is mostly determined by the accuracy of the locating pin 200, so the coaxiality and accuracy requirements between the guide hole 201 of the locating pin 200 and the outer circle of the locating pin 200 are relatively high, wherein the error of the hole diameter or the outer circle diameter does not exceed ±0.05mm, and the coaxiality deviation does not exceed ±0.03mm.

[0056] During implementation, the chip removal groove between the reamer blade 101 and the drilling cutting part 102 is connected. Due to the addition of the cutting of the positioning pin 200, more chips will be generated, and the chips can be quickly removed through the chip removal groove. The chip removal groove between the reamer blade 101 and the drilling cutting part 102 is as smooth as possible.

[0057] During implementation, it also includes a blowing piece 600, which includes a flat sealed shell 601 with a hollow interior, and the flat sealed shell 601 is set as a U-shaped structure, and the top surface of the flat sealed shell 601 is connected with a nozzle 602, and the top surface of the flat sealed shell 601 is also connected with a soft air pipe 603, and one end of the soft air pipe 603 is connected to the air source of compressed air; the blowing piece 600 is fixedly installed inside the "J"-shaped opening of the fixing member 400, and the nozzle 602 can be aligned with one end of the positioning pin 200. The blowing piece 600 can be fixed on the fixing member 400 by a clip or a clamp.

[0058] The bottom of the flat sealed housing 601 is fixedly connected with a sheet-shaped magnet 604, and the fixing member 400 is made of iron, ordinary steel or high carbon steel that can be attracted by the magnet 604. The flat sealed housing 601 can be fixed to the fixing member 400 by suction through the magnet 604. By means of the magnet 604, the blowing sheet 600 is easy to be fixed.

[0059] like Figure 5As shown in the figure, a universal bamboo tube 605 is fixedly connected to the top surface of the flat sealed housing 601, one end of the universal bamboo tube 605 is connected to the inside of the flat sealed housing 601, and the other end of the universal bamboo tube 605 is provided with an air jet 606. The universal bamboo tube 605 can adjust its direction according to needs, and generally, it is necessary to blow air to dissipate heat at the reamer position for reaming holes from above.

[0060] During implementation, the positioning pin 200 is made of aluminum-magnesium alloy, aluminum alloy, magnesium alloy, aluminum-zinc alloy, copper-zinc alloy, copper-tin alloy, copper-nickel alloy or manganese-copper alloy, wherein the hardness of the positioning pin 200 is lower than the hardness of the wing material of the aircraft; the positioning pin 200 can provide energy absorption and shock absorption. Specifically, the copper alloy (copper-nickel alloy or manganese-copper alloy, etc.) has moderate hardness, and can effectively absorb energy and reduce shock through its good mechanical properties and specific alloy composition, and maintain stability during processing.

[0061] Embodiment 2:

[0062] Different from Example 1, Figure 6 and Figure 7 As shown in , the lower end of the positioning pin 200 is provided with a thin diameter portion 204, the lower part of the thin diameter portion 204 is provided with a convex ring 206, and the upper part of the convex ring 206 is provided with two symmetrically arranged smooth protrusions 205; it also includes an elastic plastic clip 700, the elastic plastic clip 700 is set as a U-shaped structure, the U-shaped mouth of the elastic plastic clip 700 can be clamped on the thin diameter portion 204, the elastic plastic clip 700 is provided with an inclined surface 701, and the inclined surface 701 is provided with a notch 702 that can cooperate with the protrusion 205, and the lower end of the positioning pin 200 can be clamped by the elastic plastic clip 700 to prevent the positioning pin 200 from moving upward too much. This method is convenient for preventing the positioning pin 200 from moving upward when the reamer 100 lifts the knife upward when positioning the lower knife.

[0063] More specifically, the vertical height of the spline portion 203 is smaller than the vertical depth of the spline opening 401, so as to prevent the elastic plastic clip 700 from being blocked and being unable to be smoothly clamped on the thin-diameter portion 204. The elastic plastic clip 700 can provide elastic force and limiting force, and is easy to install.

[0064] Embodiment 3:

[0065] Different from the first embodiment, the present embodiment discloses a method for using a guide device for the butt joint holes of the middle and outer wings of an expansion-hinged aircraft, and adopts the guide device for the butt joint holes of the middle and outer wings of an expansion-hinged aircraft in the first embodiment, specifically comprising the following steps:

[0066] S1, installing the positioning pin 200 in the docking hole 301 that needs to be reamed;

[0067] S2, the spline opening 401 of the fixing member 400 is sleeved onto the spline portion 203 at one end of the positioning pin 200 to restrict the rotation of the positioning pin 200;

[0068] S3, fixing the fixing member 400 to the middle wing part 300 by means of bolts 500 and nuts 501;

[0069] S4, install the reamer 100 on the drill, operate the drill downward to align with the guide hole 201 to test the hole, align the guide rod 103 with the guide hole 201 and test the insertion and removal up and down until it can be inserted and removed smoothly, and then lock the position of the drill;

[0070] S5, connect to the compressed air source for rapid air supply, which can provide heat dissipation when reaming;

[0071] S6. Operate the drilling rig to press down and feed, and perform reaming operation. The operation process is completed in one step.

[0072] It should be noted that when reaming, the drilling speed of the drill is controlled within the range of 150-120r / min, and the feed rate is controlled between 0.1-0.5mm / r. Appropriate control of the feed rate can avoid increasing roughness or generating burrs after reaming.

[0073] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A guide device for the docking holes of the middle and outer wings of an expanded aircraft, characterized in that: include: A fixing member (400), the fixing member (400) being of a "J"-shaped structure, a spline opening (401) being provided at the center of the bottom of the fixing member (400), strip-shaped openings (402) being provided at both ends of the fixing member (400), and the opening (402) of the fixing member (400) being capable of being fixed to the middle wing portion (300) by means of bolts (500) and nuts (501); A positioning pin (200), wherein a guide hole (201) extending vertically through the middle of the positioning pin (200) is provided, one end of the positioning pin (200) is provided as a large head portion (202), and the other end of the positioning pin (200) is provided as a spline portion (203); wherein the spline portion (203) can be inserted into the spline opening (401), thereby limiting the rotation of the positioning pin (200); It also comprises a reamer (100), wherein a reamer blade portion (101), a drilling cutting portion (102) and a guide rod portion (103) are respectively arranged in sequence downward from the middle portion of the reamer (100), wherein the guide rod portion (103) can be smoothly inserted into the guide hole (201) of the positioning pin (200); It also comprises a blowing piece (600), the blowing piece (600) comprising a flat sealed shell (601) with a hollow interior, the flat sealed shell (601) being arranged in a U-shaped structure, the top surface of the flat sealed shell (601) being connected to a nozzle (602), the top surface of the flat sealed shell (601) being further connected to a soft air pipe (603), and one end of the soft air pipe (603) being connected to a compressed air source; the blowing piece (600) is fixedly mounted inside the "J"-shaped opening of the fixing member (400), and enables the nozzle (602) to be aligned with one end of the positioning pin (200); The positioning pin (200) is made of aluminum-magnesium alloy, aluminum-zinc alloy, copper-zinc alloy, copper-tin alloy, copper-nickel alloy or manganese-copper alloy, wherein the hardness of the positioning pin (200) is lower than the hardness of the material of the aircraft wing; the positioning pin (200) can provide energy absorption and shock reduction effects.

2. The guide device for the docking holes of the middle and outer wings of an expanded aircraft according to claim 1, characterized in that: The chip removal groove between the reamer blade portion (101) and the drilling cutting portion (102) is in communication.

3. The guide device for the docking holes of the middle and outer wings of an expanded aircraft according to claim 1, characterized in that: A sheet-shaped magnet (604) is fixedly connected to the bottom of the flat sealed housing (601); the fixing member (400) is made of iron, ordinary steel or high-carbon steel that can be attracted by the magnet (604); and the flat sealed housing (601) can be fixed to the fixing member (400) by suction through the magnet (604).

4. The guide device for the docking holes of the middle and outer wings of an expanded aircraft according to claim 1, characterized in that: A universal bamboo tube (605) is fixedly connected to the top surface of the flat sealed shell (601); one end of the universal bamboo tube (605) is in communication with the interior of the flat sealed shell (601); and the other end of the universal bamboo tube (605) is provided with an air jet (606).

5. The guide device for the docking holes of the middle and outer wings of an expanded and hinged aircraft according to claim 1, characterized in that: The lower end of the positioning pin (200) is provided with a thin-diameter portion (204), the lower part of the thin-diameter portion (204) is provided with a convex ring (206), and the upper part of the convex ring (206) is provided with two symmetrically arranged smooth protrusions (205); and the positioning pin (200) further comprises an elastic plastic clip (700), the elastic plastic clip (700) is provided with a U-shaped structure, the U-shaped opening of the elastic plastic clip (700) can be clamped on the thin-diameter portion (204), the elastic plastic clip (700) is provided with an inclined surface (701), and the inclined surface (701) is provided with a recess (702) capable of cooperating with the protrusion (205), and the lower end of the positioning pin (200) can be clamped by the elastic plastic clip (700) to prevent the positioning pin (200) from moving excessively upwards.

6. The guide device for the docking holes of the middle and outer wings of an expanded and hinged aircraft according to claim 5, characterized in that: The vertical height of the spline portion (203) is smaller than the vertical depth of the spline opening (401), thereby preventing the elastic plastic clip (700) from being obstructed and being unable to be smoothly clipped on the thin-diameter portion (204).

7. A method for using a guide device for a butt-jointing hole in an outer wing of an expanded aircraft, characterized in that: The guide device for the butt-jointing holes of the outer wings of the expanded-hinged aircraft described in claim 1 specifically comprises the following steps: S1, installing the positioning pin (200) in the docking hole (301) that needs to be reamed; S2, sleeve the spline opening (401) of the fixing member (400) onto the spline portion (203) at one end of the positioning pin (200) to restrict the rotation of the positioning pin (200); S3, fixing the fixing member (400) to the middle wing part (300) by means of bolts (500) and nuts (501); S4, installing the reamer (100) on the drilling machine, operating the drilling machine to align the guide hole (201) downward to perform drilling, aligning the guide rod portion (103) with the guide hole (201) to test the insertion and removal up and down until the insertion and removal can be smoothly performed, and then locking the position of the drilling machine; S5, connect to the compressed air source for rapid air supply, which can provide heat dissipation when reaming; S6. Operate the drilling rig to press down and feed, and perform reaming operation. The operation process is completed in one step.

8. The method for using the guide device for the docking holes of the outer wings of an expanded aircraft according to claim 7, characterized in that: When reaming, the drilling speed of the drill is controlled within the range of 150-120r / min, and the feed rate is controlled between 0.1-0.5mm / r.

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