CN109109329B

CN109109329B - Sealing and riveting tool and sealing and riveting method suitable for airplane composite material vertical empennage wing box

Info

Publication number: CN109109329B
Application number: CN201810816242.6A
Authority: CN
Inventors: 宋强; 李论; 刘振山; 于潇; 李艳军; 姚嘉宁; 白庆国
Original assignee: AVIC Sac Commercial Aircraft Co Ltd
Current assignee: AVIC Sac Commercial Aircraft Co Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-06-19
Anticipated expiration: 2038-07-24
Also published as: CN109109329A

Abstract

The invention relates to a sealing and riveting tool and a sealing and riveting method suitable for a composite material vertical empennage wing box of an airplane. The technical scheme adopted by the invention is as follows: the sealing and riveting tool comprises a handle, an extension pipe, a pneumatic switch, an endoscope lens and a display screen, wherein the handle is connected with the extension pipe, the extension pipe is connected with the magnetic chuck, one end of an air pipe is connected with the pneumatic switch, the other end of the air pipe penetrates through the handle and the extension pipe and then is communicated with the magnetic chuck, the endoscope lens is installed on the magnetic chuck, and the endoscope lens is connected with the display screen through. And (3) sealing and riveting the composite material vertical tail wing box of the airplane by using a sealing and riveting tool, inserting a fastener into a fastener hole site drilled in advance by guiding through an endoscope lens in the sealed wing box, starting a wind control switch on a wind pipe, and fixing the stringers and/or the corner pieces in the sealed box section through the fastener. The invention reasonably formulates the assembly sequence of the wing box, simultaneously, the wing box is matched with the endoscope for observation, and the fastening piece between the stringer and the corner piece is installed through the lightening hole which is inherent on the wing box by manual holding, thereby meeting the engineering requirement.

Description

Sealing and riveting tool and sealing and riveting method suitable for airplane composite material vertical empennage wing box

Technical Field

The invention relates to a sealing and riveting tool and a sealing and riveting method, in particular to a sealing and riveting tool and a sealing and riveting method suitable for installing a fastener inside a closed airplane vertical tail wing box.

Background

The wing box of the vertical tail wing of the C919 large-scale passenger plane is made of advanced composite materials, the structure is closed, the assembly space is narrow, the range of the internal operable space is very limited, and especially for the connection between the wall plate stringers in the wing box (on the left side and the right side) and the rib plates and the corner plates, the installation of fasteners (single-sided threaded core-pulling nails) is difficult. At present, only a path of 'lightening hole' is inherent on a beam forming the lower end of a 'closed box section' of a vertical tail wing box, the diameter of the hole is only phi 104mm, the maximum distance from the position of a mounting fastener is about 700mm, and the current domestic and foreign closed riveting methods comprise roll riveting and removal after pre-mounting to provide two paths, but the two schemes cannot be adopted on the airplane due to the restriction of selected materials and structural shape factors, and because the wall plate structure is a composite material and the inner surface of a skin is provided with a glue joint stringer, the skin roll riveting scheme cannot be implemented; in addition, the front beam and the rear beam are both I-shaped and have closed angle design, so the beams cannot be detached and reset after being pre-installed, and the scheme of providing a passage for detaching parts cannot be implemented; due to the large size of the product structure, each corner piece position cannot be reached by conventional mounting tools. Therefore, a new scheme is required to be established to successfully complete the installation.

Disclosure of Invention

The invention provides a sealing and riveting tool and a sealing and riveting method for solving the problem of installation of a fastener in an aircraft closed space.

The technical scheme adopted by the invention is as follows: a sealing and riveting tool suitable for an airplane composite material vertical empennage wing box is characterized in that a handle is connected with an extension pipe, the extension pipe is connected with a magnetic chuck, one end of an air pipe is connected with a wind control switch, the other end of the air pipe penetrates through the handle and the extension pipe and then is communicated with the magnetic chuck, an endoscope lens is installed on the magnetic chuck, and the endoscope lens is connected with a display screen through a wire.

Furthermore, the sealing and riveting tool suitable for the composite material vertical empennage wing box of the airplane is characterized in that a groove is formed in the magnetic chuck, and a permanent magnet is arranged in the groove.

The sealing and riveting method for the composite material vertical tail wing box of the airplane is utilized, and the sealing and riveting tool for the composite material vertical tail wing of the airplane comprises the following steps:

1) the two wall plates forming the composite material vertical tail wing box of the airplane are characterized in that all structural parts needing to be installed are installed on one wall plate I, and then the other wall plate II and the wall plate I are closed to form a closed box section;

2) inserting a fastener into the groove of the magnetic chuck, sucking the fastener by a permanent magnet, and extending the magnetic chuck into the closed box section through a lightening hole inherent on a beam at the lower end of the closed box section;

3) observing by matching with an endoscope lens, and moving the hand-held handle along with the endoscope lens until the magnetic chuck clamping the fastener finds a fastener hole site to be installed;

4) the method comprises the following steps of (1) inserting a fastener into a fastener hole site drilled in advance through the guidance of an endoscope lens, carrying out pre-installation inspection by using the endoscope lens, starting a wind control switch on a wind pipe after the confirmation of no error, separating the fastener from a groove of a magnetic chuck under the action of wind, penetrating the fastener into the fastener hole site, and fixing a stringer and/or a corner piece of a closed box section through the fastener;

5) and taking out the sealing and riveting tool, inserting another fastener, then extending into the closed box section through the lightening hole again, searching for the hole position of the next fastener, and repeating the steps to fix the stringers and/or the corner pieces of all the closed box sections through the fasteners.

The invention has the beneficial effects that:

1. the invention reasonably formulates the assembly sequence of the wing box, selects a special tool for closed riveting, simultaneously cooperates with an endoscope for observation, and realizes the installation of the fasteners between the stringer and the corner piece through the lightening hole on the wing box by manual holding, thereby meeting the engineering requirements. According to the invention, a specially-made sealing and riveting tool is deeply inserted into the wing box by utilizing lightening holes, in order to prevent a fastener from falling off and causing redundancy, a magnetic device is arranged at the position where the tool clamps the fastener, after the tool enters the wing box, in order to quickly and accurately find the fastener hole, an industrial endoscope lens is selected, the lens is attached to the head part of a magnetic chuck for illumination observation, in order to prevent a trigger switch of the tool from being touched by mistake in the hole finding process, a pneumatic switch is transferred to an air pipe to form a special matching pipe, and a special person controls the switch to finish final installation.

2. For the vertical stabilizer closed box section, the assembly sequence is reasonably arranged, so that the sealing and riveting of the wing box are more convenient, and most of fasteners are installed and communicated.

3. From the current design structure of the composite material vertical tail wing box of the airplane, after the main structure connection of the box sections is completed, the installation of fasteners between the stringers and the corner pieces is realized by a manual handheld tool through lightening holes on the front beam and the rear beam of the wing box. Because the fastener is in a closed area, once the fastener is failed to be installed, the fastener is difficult to remove without damage, so the accessibility, the functionality and the anti-false touch performance of an installation tool are optimized through continuous tests. The invention designs a special tool special for closed riveting through creative labor of an inventor, and the installation of a fastener is completed in a closed box section through an endoscope and a magnetic chuck and a lightening hole on a wing box.

4. The method of the invention is applied to the production and manufacture of C919 vertical tails 101, 102 and 01 through debugging and manufacturing, and successfully passes the acceptance of customers.

5. The invention completely meets the requirements of engineering and customers, reduces the structural strength influence caused by the forced opening of the process cover on the product by the engineering, improves the product quality, has wide application range and can be suitable for similar closed structure cases.

Drawings

FIG. 1 is a schematic illustration of the construction of a riveter tool suitable for an aircraft composite vertical tail wing box according to the present invention.

Fig. 2 is an enlarged view of the magnetic chuck.

Fig. 3 is a schematic view of the steps of the sealing and riveting method.

Fig. 4 is a schematic view of the steps of the sealing and riveting method.

Fig. 5 is a schematic view of the steps of the sealing and riveting method.

Fig. 6 is a schematic view of the steps of the sealing and riveting method.

Fig. 7 is a schematic view of the steps of the sealing and riveting method.

Detailed Description

Example 1

As shown in fig. 1 and 2, the sealing and riveting tool suitable for the composite material vertical tail wing box of the airplane comprises an endoscope lens 1, a magnetic chuck 2, an extension tube 3, a handle 4, an air pipe 5, an air control switch 6 and a display screen 7.

Handle 4 is connected with extension pipe 3, and extension pipe 3 is connected with magnetic chuck 2, and wind control switch 6 is connected to 5 one ends of tuber pipe, and the other end passes behind handle 4 and the extension pipe 3 and communicates with magnetic chuck 2, and endoscope camera lens 1 is installed on magnetic chuck 2, and endoscope camera lens 1 passes through the line and is connected with display screen 7.

The magnetic chuck 2 is provided with a groove 2-1, and a permanent magnet 2-2 is arranged in the groove 2-1.

Example 2

During the assembly of the aircraft, the vertical tail box of the aircraft is formed into a closed box section by a right side wall plate I10 and a left side wall plate II 20. A beam at the lower end of the closed box section is provided with a lightening hole 40. The interior of the closed box section of the wing box is supported by ribbed plates which are all made of composite materials, the joint of the ribbed plates and the stringer is designed to have reinforced structural strength by adopting 82 corner pieces, and each corner piece is provided with 2 fasteners to be installed in a closed space.

A method for sealing and riveting a wing box of an airplane composite vertical tail, which utilizes the sealing and riveting tool for the airplane composite vertical tail of the embodiment 1, and comprises the following steps:

1) as shown in fig. 3, the two panels forming the composite vertical tail wing box of the aircraft are first assembled on the right side panel i 10, and then the other left side panel ii 20 is closed with the panel i 10 to form a "closed box section".

2) As shown in fig. 4 and 5, a fastening piece 30 is inserted into a groove 2-1 of the magnetic chuck 2, the fastening piece is sucked by a permanent magnet 2-2, and the magnetic chuck 2 extends into the closed box section through a lightening hole 40 inherent on a beam at the lower end of the closed box section;

3) as shown in fig. 6, when observing with the endoscope lens 1, the hand-held handle moves along with the endoscope lens 1 until the magnetic chuck 2 with the fastener is found in the fastener hole 50 to be installed;

4) the fastener 30 is inserted into a fastener hole 50 drilled in advance through the guidance of the endoscope lens 1, the endoscope lens 1 is used for pre-installation inspection, after the confirmation of no error, as shown in figure 7, the air control switch 6 on the air pipe 5 is started, the fastener 30 is separated from the groove 2-1 of the magnetic chuck 2 under the action of air and is deeply inserted into the fastener hole 40, and the long truss and/or the corner piece of the closed box section are fixed through the fastener;

Claims

1. A sealing and riveting method suitable for an airplane composite material vertical tail wing box is characterized in that a sealing and riveting tool suitable for the airplane composite material vertical tail wing box is utilized, and the method comprises the following steps:

(1) the two wall plates forming the composite material vertical tail wing box of the airplane are characterized in that all structural parts needing to be installed are installed on one wall plate I (10), and then the other wall plate II (20) and the wall plate I (10) are closed to form a closed box section;

(2) inserting a fastener (30) into a groove (2-1) of a magnetic chuck (2), sucking the fastener through a permanent magnet (2-2), and extending the magnetic chuck (2) into a closed box section through a lightening hole (40) which is inherent on a beam at the lower end of the closed box section;

(3) observing by matching with the endoscope lens (1), and moving the hand-held handle along with the endoscope lens (1) until the magnetic chuck (2) clamped with the fastener finds a fastener hole (50) required to be installed;

(4) the method comprises the steps that a fastener (30) is inserted into a fastener hole site (50) which is drilled in advance through the guidance of an endoscope lens (1), the endoscope lens (1) is used for inspection before installation, after the fact that no mistake exists is confirmed, a wind control switch (6) on a wind pipe (5) is started, the fastener (30) is separated from a groove (2-1) of a magnetic chuck (2) under the action of wind and penetrates into the fastener hole site (50), and a long truss and/or a corner piece of a closed box section are fixed through the fastener;

(5) taking out the sealing and riveting tool, inserting another fastener, then extending into the closed box section through the lightening hole again, searching for the hole position of the next fastener, and repeating the steps in such a way, so that the stringers and/or the corner pieces of all the closed box sections are fixed through the fasteners;

the sealing and riveting tool suitable for the composite material vertical empennage wing box of the airplane is structurally characterized in that a handle (4) is connected with an elongated pipe (3), the elongated pipe (3) is connected with a magnetic chuck (2), one end of an air pipe (5) is connected with an air control switch (6), the other end of the air pipe penetrates through the handle (4) and the elongated pipe (3) and then is communicated with the magnetic chuck (2), an endoscope lens (1) is installed on the magnetic chuck (2), and the endoscope lens (1) is connected with a display screen (7) through a wire; the magnetic chuck (2) is provided with a groove (2-1), and a permanent magnet (2-2) is arranged in the groove (2-1).