An integrated tooling and inspection method for hanging C-shaped slide rails

Abstract

The present invention provides an integrated tooling for installation and inspection of a hanging C-shaped slide rail, belonging to the technical field of aircraft assembly, which includes a main body frame, a main locator module, a slide rail installation and inspection module, and a drill jig module; the main body frame serves as the fixed basis for other modules and the assembly reference for products; the main locator module is used to position and fix the hanging section; the slide rail installation and inspection module includes a guiding slide rail parallel to the axis of the hanging C-shaped slide rail groove, positioning angle seats and stepped grading positioning pins installed at both ends of the guiding slide rail for positioning and installing the hanging C-shaped slide rail, and a slide rail inspection ball module capable of sliding along the guiding slide rail; the slide rail inspection ball module is provided with inspection balls, which are inserted into the hanging C-shaped slide rail groove, and the axis position degree is inspected by sliding along the guiding slide rail. Through the whole process detection of the hanging C-shaped slide rail assembly and the secondary assembly compensation process method, the present invention realizes high-quality assembly, improves the detectability of the axis of the hanging C-shaped slide rail, and improves the assembly accuracy.

Description

Technical Field

[0001] The present invention belongs to the technical field of aircraft assembly, and relates to an integrated tooling and inspection method for a hanging C-shaped slide rail. Background Technique

[0002] The aircraft hanging assembly technology is a key link in the modern aircraft manufacturing process, involving the installation and fixation of large components such as aircraft engines and wings. With the rapid development of the aviation industry, aircraft designs are becoming increasingly complex. There are many connection intersections between the aircraft hanging and the engine and wings, and high positional accuracy requirements are imposed. Any minor deviation may lead to a decline in aircraft performance or safety hazards. The aircraft hanging is assembled from a hanging section, a hanging nacelle skeleton, a hanging skin, and a hanging slide rail. Through the innovation of assembly technology to improve the assembly accuracy of the hanging slide rail and ensure product stability has always been the continuous work goal of engineers in the field of civil aircraft hanging slide rail assembly and processing.

[0003] The traditional assembly method for the hanging C-shaped slide rail uses fixed-size positioning pins for positioning, and only one assembly compensation is carried out during the positioning stage. Since the fixed-size positioning pins have high requirements for the manufacturing accuracy of parts, the difficulty of part processing is increased. And only one assembly compensation is carried out, so that the errors in the assembly process cannot be eliminated, and the assembly accuracy of the product cannot be guaranteed. In addition, the traditional assembly method for the hanging C-shaped slide rail cannot detect whether the axis positional accuracy is qualified during the assembly process, and can only be detected after the assembly is completed and taken off the shelf. At the same time, due to the lack of detection during the assembly process, it is impossible to judge whether the positional accuracy of the slide rail meets the requirements, thus increasing the risk of unqualified products flowing into the next process. Summary of the Invention

[0004] In view of the above problems, the present invention provides an integrated tooling and inspection method for a hanging C-shaped slide rail, which can realize the detection of the position state of the slide rail throughout the assembly process, solve the design of the assembly tooling for the hanging C-shaped slide rail and the inspection of the axis positional accuracy of the slide rail, improve the detectability of the axis of the hanging C-shaped slide rail, effectively improve the assembly accuracy of the hanging C-shaped slide rail, and ensure the stability of the assembly quality.

[0005] The technical solution of the present invention is as follows:

[0006] An integrated tooling and inspection device for a hanging C-shaped slide rail, the integrated tooling and inspection device includes a main frame, a main locator module, a slide rail inspection module, and a drill jig module.

[0007] The main frame is a rectangular frame structure, and multiple sets of support frames are arranged at different positions of the rectangular frame according to the aircraft hanging inspection requirements; the main frame serves as the fixed basis for the main locator module, the slide rail inspection module, and the drill jig module, and at the same time establishes the basis for the product assembly reference.

[0008] The described main locator module includes an engine front mount locator, an engine rear mount locator, a positioning auxiliary support, and a wing lower joint locator. The engine front mount locator includes two left and right joints fixedly connected by a connecting plate. The engine front mount locator is detachably and fixedly installed between two columns at one end of the main frame and is connected to the front end of the hanging section through a positioning pin. The positioning auxiliary support is fixed on the main frame below the engine front mount locator, and two rubber wheels are provided at its top for contacting the hanging section. The rubber wheels can be adjusted up and down for fine adjustment in the vertical direction during the positioning of the hanging section. The engine rear mount locator is fixed between the bottom cross beams on both sides near the other end of the main frame. The top surface of the engine rear mount locator serves as the support surface for the engine rear mount. A telescopic positioning pin is provided on the top surface to facilitate the telescopic positioning pin to fall into the engine rear mount hole at the rear end of the hanging section to achieve positioning. A tab is provided at the head of the telescopic positioning pin for cooperation with the card slot in the engine rear mount hole to achieve fixed limit. The wing lower joint locator, as an auxiliary locator, is fixed at one end of the main frame near the engine rear mount locator and is used to connect to the wing lower joint of the hanging section through a positioning pin. This positioning pin is a stepped pin to avoid over-positioning of the hanging section.

[0009] The described slide rail installation and inspection module includes two groups with the same structure, symmetrically installed on the bottom cross beams on both sides of the main frame. Both groups of slide rail installation and inspection modules include a front-end stepped grading positioning pin, a front-end positioning angle seat, a slide rail inspection ball module, a guiding slide rail, a slide rail backing plate, a rear-end positioning angle seat, and a rear-end stepped grading positioning pin. The slide rail backing plate is a thick flat plate fixed to the bottom cross beam of the main frame and is parallel to the axis of the hanging C-shaped slide rail groove. The guiding slide rail is fixed on the slide rail backing plate, and its axis is parallel to the axis of the hanging C-shaped slide rail groove, and its length is greater than the length of the hanging C-shaped slide rail groove. The front-end positioning angle seat and the rear-end positioning angle seat have the same structure and are both provided with bushing holes. The two are detachably and fixedly installed on the bottom cross beams of the main frame at both ends of the guiding slide rail. The front-end stepped grading positioning pin and the rear-end stepped grading positioning pin have the same structure and both have a step. The large diameters of the steps of the two are respectively matched with the bushing holes of the front-end positioning angle seat and the rear-end positioning angle seat through fixed dimensions. The small diameters of the steps of the two are graded at 0.05 mm per level, with a total of five levels, respectively used for cooperation with the front end and the rear end of the hanging C-shaped slide rail.

[0010] The described sliding rail inspection ball module includes a bolt, an inspection ball seat, an inspection ball, a sliding rail block, and a connecting plate. The bottom of the connecting plate is fixed with a sliding rail block for sliding along the guiding sliding rail. The inspection ball seat is detachably connected to the connecting plate through two bolts, and the inspection ball seat is connected to one end of the connecting plate facing the inner side of the main body frame. The two bolts are diagonally distributed on the connecting plate. The inspection ball seat is provided with a downwardly inclined mounting surface for mounting the inspection ball. The inspection ball is an oblate sphere symmetrically cut along the diameter plane of the sphere, and its diameter is set according to the position degree requirement of the sliding rail groove axis. It can be rotated and inserted into the hanging C-shaped sliding rail groove and slide along the guiding sliding rail to inspect the axis position degree of the hanging C-shaped sliding rail.

[0011] The described drill jig module is a detachable drill jig. There are two groups in total, which are detachably fixed on the main body frame. Its profile is set according to the profile of the hanging skin. When in use, it is set on the outside of the hanging skin and kept at a 10-mm gap from the hanging skin. A number of stop pins and setscrew bolts are provided on the drill jig module. The stop pins are used to position the outer end face of the hanging skin, and the setscrew bolts are used to press the hanging skin. A bushing hole is also provided on the drill jig module for drilling holes in the hanging skin.

[0012] Further, the position of the front engine mounting node locator is determined according to the designed position of the front engine mounting node, and the position of the rear engine mounting node locator is determined according to the designed position of the rear engine mounting node. The two are used as the assembly reference of the assembly and inspection integrated tooling, which is consistent with the design reference of the hanging section. The design reference of the hanging section is the front and rear engine mounting nodes.

[0013] Further, among the two joints of the front engine mounting node locator, the left joint bushing is a round hole, and the right joint bushing is an axially elongated oval hole.

[0014] Further, the positioning pin on the wing lower joint locator is a stepped positioning pin, and its diameter dimension is one level every 0.05 m, with a total of five levels.

[0015] Further, the drill jig module is made of aluminum alloy, which is light and easy to disassemble.

[0016] The present invention also provides a method for inspecting and assembling a hanging C-shaped sliding rail, which is realized based on the above-mentioned assembly and inspection integrated tooling. The inspection and assembly method includes the following steps:

[0017] Step 1, confirm that the assembly and inspection integrated tooling is intact and without wear; use the lug holes of the two non-mounting intersection locators at the front end of the hanging section and the six-frame holes at the rear end as the lifting points, and suspend the hanging section above the assembly and inspection integrated tooling at a suitable position.

[0018] Step 2: Lower the suspension section into the main frame, with its front end seated on the positioning auxiliary support and its rear end seated on the engine rear mounting joint locator. Adjust the telescopic positioning pin of the engine rear mounting joint locator until it inserts into the engine rear mounting joint hole, and the engine rear mounting joint is supported on the top surface of the engine rear mounting joint locator.

[0019] Step 3: Connect the front end of the suspension section to the engine front mounting joint locator with a positioning pin, and use the positioning auxiliary support 7 to finely adjust the front end of the suspension section in the vertical direction until the engine front mounting joint locator is connected and fixed to the main frame; insert a shim into the head of the telescopic positioning pin of the engine rear mounting joint locator and press it against the card slot in the engine rear mounting joint hole. Select a suitable graded positioning pin for the wing lower joint locator to lock it with the wing lower joint.

[0020] Step 4: According to the connection holes drilled in the previous process for the suspension section and the suspension nacelle skeleton, position and fix the suspension nacelle skeleton on the suspension section with process bolts.

[0021] Step 5: Insert the front stepped graded positioning pins in the two main locator modules into the front ends of the two suspension C-shaped slide rails through the front positioning angle seats respectively, and insert the rear stepped graded positioning pins into the rear ends of the suspension C-shaped slide rails through the rear positioning angle seats to achieve the preliminary positioning of the two suspension C-shaped slide rails; the principle for selecting the grading of the front stepped graded positioning pins and the rear stepped graded positioning pins is from large to small to ensure the position accuracy of the axis of the suspension C-shaped slide rail groove and reduce the assembly error.

[0022] Step 6: Identify the interference areas between the suspension C-shaped slide rail and the suspension nacelle skeleton, and trim them according to engineering requirements to eliminate the interference. After the interference is eliminated, measure the assembly gap between the suspension C-shaped slide rail and the suspension nacelle skeleton, and install peelable gaskets to eliminate the assembly gap.

[0023] Step 7: Place the inspection ball into the suspension C-shaped slide rail groove. After adjusting the position, fix the inspection ball seat on the connecting plate with a pin, and detect the position accuracy of the axis of the suspension C-shaped slide rail groove by sliding the inspection ball in the suspension C-shaped slide rail groove to assist in assembly compensation and correction.

[0024] Step 8: After the inspection ball can slide smoothly without jamming in the suspension C-shaped slide rail groove, drill the connection holes between the suspension C-shaped slide rail and the suspension nacelle skeleton and make a temporary connection.

[0025] Step 9: Lay the suspension skin on the suspension nacelle skeleton and the suspension C-shaped slide rail for preliminary positioning according to the shape. Install the drilling template module on the main frame, position and press the suspension skin with the stop pins and jacking bolts on the drilling template module, and drill the connection holes through the bushing holes. After completion, disassemble the drilling template module.

[0026] Step 10: Disassemble the hanging skin, the hanging nacelle skeleton and the hanging C-shaped slide rail, remove the burrs from the connecting holes, remove the sharp edges of the peelable gaskets and refine the outer shape.

[0027] Step 11: Reposition the hanging nacelle skeleton with the hanging section through the connecting holes, install the fasteners for connecting the hanging nacelle skeleton and the hanging section. After repositioning and fixing the connected hanging nacelle skeleton and the hanging section with the main locator module, reposition the hanging C-shaped slide rail through the slide rail assembly and inspection module and check the axis position accuracy with the slide rail inspection ball module, and assist in the secondary assembly compensation and correction of the hanging C-shaped slide rail and the hanging nacelle skeleton; install the fasteners for connecting the hanging C-shaped slide rail and the hanging nacelle skeleton, and install the fasteners for the hanging skin.

[0028] Step 12: Operate the inspection ball of the slide rail inspection ball module again to slide smoothly without jamming in the C-shaped slide rail groove, and finally form a qualified aircraft hanging assembly; disassemble the locator for the front mounting section of the engine, the front end positioning angle seat and the rear end positioning angle seat, and remove the assembled aircraft hanging assembly from the integrated assembly and inspection tooling.

[0029] Further, in the above-mentioned Step 6, the trimming principle for the interference between the hanging C-shaped slide rail and the hanging nacelle skeleton is to first trim the hanging nacelle skeleton. If the trimming amount of the hanging nacelle skeleton reaches the limit and the interference still cannot be eliminated, then trim the hanging C-shaped slide rail.

[0030] The beneficial effects of the present invention are as follows: Based on the integrated tooling solution for part positioning, hole making and inspection, through the whole-process detection of the hanging C-shaped slide rail assembly and the secondary assembly compensation process method, the high-quality assembly of the hanging C-shaped slide rail is realized, the detectability of the axis of the hanging C-shaped slide rail is improved, and the assembly accuracy of the hanging C-shaped slide rail is enhanced. Description of the Drawings

[0031] Figure 1 Isometric view of the integrated assembly and inspection tooling.

[0032] Figure 2 Schematic diagram of the main locator module and the slide rail assembly and inspection module.

[0033] Figure 3 Schematic diagram of the slide rail inspection ball module.

[0034] In the figure: 1 - main frame; 2 - main locator module; 3 - slide rail assembly and inspection module; 4 - drill jig module; 5 - locator for the front mounting section of the engine; 6 - locator for the rear mounting section of the engine; 7 - positioning auxiliary support; 8 - locator for the wing lower joint; 9 - front end stepped grading positioning pin; 10 - front end positioning angle seat; 11 - slide rail inspection ball module; 12 - guiding slide rail; 13 - slide rail backing plate; 14 - rear end positioning angle seat; 15 - rear end stepped grading positioning pin; 16 - plug pin; 17 - inspection ball seat; 18 - inspection ball; 19 - slide rail block; 20 - connecting plate. Detailed implementation mode

[0035] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art through improvement or adjustment belong to the protection scope of the present invention.

[0036] As Figures 1 to 3 shown, a hanging C-type slide rail assembly and inspection integrated tooling includes a main body frame 1, a main locator module 2, a slide rail assembly and inspection module 3, and a drill jig module 4.

[0037] The main body frame 1 is a rectangular frame structure with dimensions of 3900mm×1400mm×2300mm in length, width and height. Multiple groups of support frames are arranged at different positions of the rectangular frame according to the requirements of aircraft hanging assembly and inspection; the main body frame 1 serves as the fixed basis for the main locator module 2, the slide rail assembly and inspection module 3, and the drill jig module 4, and at the same time establishes the basis for the product assembly reference.

[0038] As Figure 2As shown, the main locator module 2 includes a front engine mount locator 5, a rear engine mount locator 6, a positioning auxiliary support 7, and a wing lower joint locator 8. The front engine mount locator 5 includes two left and right joints fixedly connected by a connecting plate. The front engine mount locator 5 is detachably and fixedly installed between two columns at one end of the main body frame 1, and its installation position is determined according to the designed position of the front engine mount. Among them, the left joint bushing is a round hole with a diameter of 25.418 mm, and the right joint bushing is an oblong hole in the span direction with a major diameter of 28.418 mm. The two joints are connected to the front end of the hanging section through a positioning pin with a diameter of 25.418 mm and an axis position tolerance of ±0.05 mm. The positioning auxiliary support 7 is fixed on the main body frame 1 below the front engine mount locator 5, and two rubber wheels are provided on its top for contacting the hanging section. The rubber wheels can be adjusted up and down with a stroke of 110 mm for fine adjustment in the up and down direction during the positioning of the hanging section. The rear engine mount locator 6 is fixed between the bottom cross beams on both sides near the other end of the main body frame 1, and its installation position is determined according to the designed position of the rear engine mount. The top surface of the rear engine mount locator 6 serves as the support surface for the rear engine mount, and a retractable positioning pin with a diameter of 38.196 mm and a retraction stroke of 190 mm is provided on the top surface to facilitate the retractable positioning pin to fall into the rear engine mount hole at the rear end of the hanging section to achieve positioning. An insert piece is provided at the head of the retractable positioning pin for cooperation with the card slot in the rear engine mount hole to achieve fixed limit. The wing lower joint locator 8 serves as an auxiliary locator and is fixed at one end of the main body frame 1 near the rear engine mount locator 6 for connection with the wing lower joint of the hanging section through a positioning pin. The positioning pin is a stepped pin with a diameter dimension of 47.80 mm - 48.00 mm, with a step of 0.05 m for a total of five steps to avoid over-positioning of the hanging section.

[0039] As Figure 2As shown in the figure, the slide rail installation and inspection module 3 includes two groups with the same structure, which are symmetrically installed on the bottom cross beams on both sides of the main body frame 1. Each of the two slide rail installation and inspection modules 3 includes a front-end stepped grading positioning pin 9, a front-end positioning angle seat 10, a slide rail inspection ball module 11, a guiding slide rail 12, a slide rail backing plate 13, a rear-end positioning angle seat 14, and a rear-end stepped grading positioning pin 15. The slide rail backing plate 13 is a thick flat plate with a thickness of 10 mm, which is fixed on the bottom cross beam of the main body frame 1 and is parallel to the axis of the hanging C-shaped slide rail groove; the guiding slide rail 12 is fixed on the slide rail backing plate 13, and its axis is parallel to the axis of the hanging C-shaped slide rail groove. Two guiding slide rails 12 are fixed side by side on each slide rail backing plate 13, and the lengths of the two guiding slide rails 12 are both 800 mm, which is greater than the length of the hanging C-shaped slide rail groove; the front-end positioning angle seat 10 and the rear-end positioning angle seat 14 have the same structure and are both provided with bushing holes, and the two are detachably fixed on the bottom cross beam of the main body frame 1 at both ends of the guiding slide rail 12; the front-end stepped grading positioning pin 9 and the rear-end stepped grading positioning pin 15 have the same structure and are both provided with a step. The large diameter of the step is 30 mm, which is respectively used to cooperate with the bushing holes of the front-end positioning angle seat 10 and the rear-end positioning angle seat 14. The small diameters of the steps of the two are both 29.04 mm - 29.25 mm, with a step of 0.05 mm for each level, and are divided into five levels in total, which are respectively used to cooperate with the front end and the rear end of the hanging C-shaped slide rail.

[0040] As Figure 3 shown in the figure, the slide rail inspection ball module 11 includes a pin 16, an inspection ball seat 17, an inspection ball 18, a slide rail block 19, and a connecting plate 20. Two slide rail blocks 19 are fixed side by side at the bottom of the connecting plate 20 for sliding along the two guiding slide rails 12; the inspection ball seat 17 is detachably connected to the connecting plate 20 through 2 pins 16, and the inspection ball seat 17 is connected to one end of the connecting plate 20 facing the inner side of the main body frame 1. The 2 pins 16 are diagonally distributed on the connecting plate 20. The inspection ball seat 17 is provided with a downwardly inclined mounting surface for mounting the inspection ball 18; the inspection ball 18 is an oblate sphere symmetrically cut along the diameter plane of the sphere, with a thickness of 12 mm and a diameter of 28.69 mm. It is arranged according to the position degree requirement of the slide rail groove axis, and can be rotated and inserted into the hanging C-shaped slide rail groove and slide along the guiding slide rail 12 to inspect the axis position degree of the hanging C-shaped slide rail.

[0041] The drill jig module 4 is a detachable drill jig. There are two groups in total, which are detachably fixed on the main body frame 1. Its profile is set according to the profile of the hanging skin. When in use, it is arranged on the outside of the hanging skin and keeps a 10 mm gap from the hanging skin. A number of stop pins and setscrew bolts are provided on the drill jig module 4. The stop pins are used to position the outer end face of the hanging skin, and the setscrew bolts are used to press the hanging skin. The drill jig module 4 is also provided with bushing holes for drilling the hanging skin. The drill jig module 4 is made of aluminum alloy and has a hollow design at the non-hole part, which is light and easy to disassemble.

[0042] An inspection method for a hanging C-shaped slide rail is realized based on the above-mentioned integrated inspection and assembly tooling, and includes the following steps:

[0043] Step 1, processing environment requirements: Ensure that the processing environment temperature is 18°C to 26°C, the relative humidity is 25% to 65%, the dustiness is such that the content of dust particles not greater than 10 μm is not greater than 10 particles per liter, and the illuminance is not less than 300 Lux; confirm that the integrated inspection and assembly tooling is intact and without wear; use the lug holes of the two non-installation intersection locators at the front end of the hanging section and the six-frame holes at the rear end as the lifting points, and suspend the hanging section above the integrated inspection and assembly tooling at a suitable position.

[0044] Step 2, lower the hanging section into the main frame 1, make its front end sit on the positioning auxiliary support 7, and the rear end sit on the engine rear mounting joint locator 6. Adjust the telescopic positioning pin of the engine rear mounting joint locator 6 until it is inserted into the engine rear mounting joint hole, and the engine rear mounting joint is supported on the top surface of the engine rear mounting joint locator 6.

[0045] Step 3, connect the front end of the hanging section to the engine front mounting joint locator 5 through a positioning pin, and use the positioning auxiliary support 7 to finely adjust the front end of the hanging section in the up and down direction until the engine front mounting joint locator 5 is connected and fixed to the main frame 1; insert an insert piece into the head of the telescopic positioning pin of the engine rear mounting joint locator 6 and press it against the card slot in the engine rear mounting joint hole. For the wing lower joint locator 8, select a suitable graded positioning pin, following the principle of selecting from large to small, and preferably select a positioning pin with a diameter of 48.00 mm to lock the wing lower joint.

[0046] Step 4, according to the connection holes drilled in the previous process for the hanging section and the hanging nacelle skeleton, position and fix the hanging nacelle skeleton on the hanging section through a process bolt with a diameter of 7.94 mm.

[0047] Step 5, insert the front stepped graded positioning pins 9 in the two main locator modules 2 into the front ends of the two hanging C-shaped slide rails respectively through the front positioning angle seats 10, and insert the rear stepped graded positioning pins 15 into the rear ends of the hanging C-shaped slide rails through the rear positioning angle seats 14 to achieve the preliminary positioning of the two groups of hanging C-shaped slide rails; the grading selection principle for the front stepped graded positioning pins 9 and the rear stepped graded positioning pins 15 is from large to small, and preferably select a positioning pin with a diameter of 29.25 mm to ensure the position accuracy of the axis of the hanging C-shaped slide rail groove and reduce the assembly error.

[0048] Step 6: Identify the interference areas between the hanging C-shaped slide rail and the hanging nacelle skeleton, and trim them according to engineering requirements to eliminate the interference. The trimming principle for interference is to first trim the hanging nacelle skeleton. If the trimming amount of the hanging nacelle skeleton reaches the limit and the interference still cannot be eliminated, then trim the hanging C-shaped slide rail. The trimming and grinding thickness shall not exceed 0.5 mm. After the interference is eliminated, measure the assembly gap between the hanging C-shaped slide rail and the hanging nacelle skeleton, and cut and add a peelable gasket not greater than 2 mm to eliminate the assembly gap.

[0049] Step 7: Place the inspection ball 18 into the groove of the hanging C-shaped slide rail. After adjusting the position, fix the inspection ball seat 17 on the connecting plate 20 through the pin 16. Detect the axis position accuracy of the groove of the hanging C-shaped slide rail by sliding the inspection ball 18 in the groove of the hanging C-shaped slide rail, and assist in assembly compensation and correction.

[0050] Step 8: After the inspection ball 18 can slide smoothly without jamming in the groove of the hanging C-shaped slide rail, drill the connection holes between the hanging C-shaped slide rail and the hanging nacelle skeleton and temporarily connect them using a puller.

[0051] Step 9: Preliminarily position and lay the hanging skin on the hanging nacelle skeleton and the hanging C-shaped slide rail using the outer shape. Install the drilling template module 4 on the main frame 1. Position and press the hanging skin using the stop pins and setscrew bolts on the drilling template module 4, and drill the connection holes through the bushing holes. After completion, disassemble the drilling template module 4.

[0052] Step 10: Disassemble the hanging section, the hanging skin, the hanging nacelle skeleton, and the hanging C-shaped slide rail. Remove the burrs from the connection holes, remove the sharp edges of the peelable gaskets, and finely machine the outer shape.

[0053] Step 11: Reposition the hanging nacelle skeleton with the hanging section through the connection holes, install the connecting fasteners between the hanging nacelle skeleton and the hanging section. After repositioning and fixing the connected hanging nacelle skeleton and the hanging section through the main locator module 2, reposition the hanging C-shaped slide rail through the slide rail assembly and inspection module 3 and check the axis position accuracy using the slide rail inspection ball module 11, and assist in secondary assembly compensation and correction for the hanging C-shaped slide rail and the hanging nacelle skeleton; install the connecting fasteners between the hanging C-shaped slide rail and the hanging nacelle skeleton, and install the hanging skin fasteners.

[0054] Step 12: Operate the inspection ball 18 of the slide rail inspection ball module 11 again to slide smoothly without jamming in the C-shaped slide rail groove, and finally form a qualified aircraft hanging assembly; disassemble the engine front mounting node locator 5, the front end positioning angle seat 10, and the rear end positioning angle seat 14, and remove the assembled aircraft hanging assembly from the integrated assembly and inspection tooling.

[0055] The above-described embodiments merely represent the implementation manners of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A C-type rail hanging and inspection integrated tooling, characterized in that: The integrated assembly and inspection tool comprises a main frame (1), a main positioner module (2), a slide rail assembly and inspection module (3) and a drilling template module (4); The main frame (1) is a rectangular frame structure; The main positioner module (2) comprises an engine front mounting section positioner (5), an engine rear mounting section positioner (6) and a wing lower joint positioner (8); the engine front mounting section positioner (5) comprises two left and right joints, which are detachably fixedly mounted on one end of the main frame (1) and are used to be connected to the front end of the hanging section; the engine rear mounting section positioner (6) is fixed between the bottom cross beams on both sides near the other end of the main frame (1), and the top surface of the engine rear mounting section positioner (6) serves as the engine rear mounting section support surface. A positioning pin is arranged on the top surface and is used to be inserted into the engine rear mounting section hole to achieve positioning; the wing lower joint positioner (8) is fixed to one end of the main frame (1) near the engine rear mounting section positioner (6) and is used to be connected to the wing lower joint of the hanging section in a positioning manner; The slide rail assembly and inspection modules (3) are provided with two groups in total. The two groups of slide rail assembly and inspection modules (3) have the same structure and are symmetrically installed on the bottom cross beams on both sides of the main frame (1). The two groups of slide rail assembly and inspection modules (3) include a front end step-grading positioning pin (9), a front end positioning angle seat (10), a slide rail inspection ball module (11), a guide slide rail (12), a slide rail pad (13), a rear end positioning angle seat (14) and a rear end step-grading positioning pin (15); the slide rail pad (13) is fixed on the main frame (1); the guide slide rail (12) is fixed on the slide rail pad (13), and its axis is parallel to the axis of the hanging C-type slide rail groove, and its length is greater than the hanging C-type slide rail groove; the front end positioning angle seat (10) and the rear end positioning angle seat (14) are detachably fixedly installed at both ends of the guide slide rail (12), and the two cooperate with the front end and the rear end of the hanging C-type slide rail through the front end step-grading positioning pin (9) and the rear end step-grading positioning pin (15) respectively; The slide rail inspection ball module (11) comprises an inspection ball seat (17), an inspection ball (18), a slide rail block (19) and a connecting plate (20); a slide rail block (19) is fixed at the bottom of the connecting plate (20) for sliding along the guide slide rail (12), and the inspection ball seat (17) is detachably connected to the connecting plate (20); the inspection ball (18) is mounted on the inspection ball seat (17) and is an oblate sphere cut symmetrically along the diameter plane of the sphere, and its diameter is set according to the requirements for the position of the axis of the slide rail groove, and is used to be inserted into the interior of the hanging C-type slide rail groove and slide along the guide slide rail (12) to inspect the position of the axis of the hanging C-type slide rail; The drilling template module (4) is a detachable drilling template, of which two groups are provided, and which are detachably fixed on the main frame (1). Its profile is set according to the profile of the hanging skin, and is used to position, press and make holes in the hanging skin.

2. The one-piece tool for assembling and inspecting a hanging C-shaped slide rail according to claim 1, characterized in that: The position of the engine front mounting section locator (5) is determined according to the design position of the engine front mounting section, and the position of the engine rear mounting section locator (6) is determined according to the design position of the engine rear mounting section. The two serve as assembly datums of the integrated assembly and inspection tooling and are consistent with the design datum of the suspension section.

3. The C-type rail hanging and inspection integrated tooling according to claim 1, characterized in that: Of the two joints of the engine front mounting joint locator (5), the left joint bushing is a round hole, and the right joint bushing is an oblong hole.

4. The one-piece tool for assembling and inspecting a hanging C-shaped slide rail according to claim 1, characterized in that: The main positioner module (2) further comprises a positioning auxiliary support (7), which is fixed on the main frame (1) below the engine front mounting section positioner (5), and has a rubber wheel that can be adjusted up and down on the top, which is used for fine adjustment in the up and down directions when positioning the hanging section.

5. The one-piece installation and inspection tool for hanging C-shaped slide rails according to claim 1 is characterized in that: The positioning pin on the top surface of the engine rear mounting node positioner (6) is a retractable positioning pin, which is convenient for falling into the engine rear mounting node hole.

6. The one-piece installation and inspection tool for hanging C-shaped slide rails according to claim 1, characterized in that: The under-wing joint locator (8) is connected to the under-wing joint via a locating pin, and the locating pin is a stepped pin.

7. The one-piece installation and inspection tool for hanging C-shaped slide rails according to claim 1, characterized in that: The drilling template module (4) is made of aluminum alloy.

8. A method for assembling and inspecting a hanging C-shaped slide rail, implemented based on the integrated assembly and inspection tooling according to any one of claims 1 to 7, characterized in that: The assembly and inspection method comprises the following steps: Step 1, suspend the hanging section above the assembly and inspection integrated tooling; Step 2, lowering the hanging section into the main frame (1), inserting the positioning pin of the engine rear mounting section positioner (6) into the engine rear mounting section hole, and supporting the engine rear mounting section on the top surface of the engine rear mounting section positioner (6); Step 3, connecting the front end of the hanging section to the engine front mounting section locator (5), connecting and fixing the engine front mounting section locator (5) to the main frame (1); and locking the wing lower joint locator (8) to the wing lower joint; Step 4, positioning and fixing the hanging nacelle frame on the hanging section according to the connection holes drilled between the hanging section and the hanging nacelle frame in the previous process; Step 5, insert the front end step-grading positioning pins (9) in the two sets of main positioner modules (2) into the front ends of the two hanging C-shaped slide rails through the front end positioning angle seats (10), and insert the rear end step-grading positioning pins (15) into the rear end of the hanging C-shaped slide rails through the rear end positioning angle seats (14), so as to achieve preliminary positioning of the two sets of hanging C-shaped slide rails; Step 6, identify the interference between the hanging C-type slide rail and the hanging nacelle frame, trim and eliminate the interference, measure the assembly gap between the hanging C-type slide rail and the hanging nacelle frame after the interference is eliminated, and install a peelable gasket to eliminate the assembly gap; Step 7, placing the inspection ball (18) into the hanging C-shaped slide rail groove, adjusting the position and fixing the inspection ball seat (17) on the connecting plate (20), and sliding the inspection ball (18) in the hanging C-shaped slide rail groove to detect the position of the axis of the hanging C-shaped slide rail groove, and assisting in assembly compensation correction; Step 8, after checking that the ball (18) slides smoothly in the C-shaped slide rail groove without any jamming, drilling connecting holes between the C-shaped slide rail and the nacelle frame for temporary connection; Step 9, preliminarily position the hanging skin using its shape, install the jig module (4) on the main frame (1) to position and press the hanging skin, and drill connection holes. After completion, remove the jig module (4); Step 10, disassemble the suspension section, suspension skin, suspension nacelle frame and suspension C-type slide rail, remove burrs from the connection holes, remove sharp edges of the peelable gaskets and refine the appearance; Step 11, re-position and connect the suspension nacelle frame with the suspension section, re-position and fix the connected suspension nacelle frame and the suspension section through the main positioner module (2), re-position the suspension C-type slide rail through the slide rail assembly and inspection module (3), check the axis position through the slide rail inspection ball module (11), and assist in secondary assembly compensation and correction of the suspension C-type slide rail and the suspension nacelle frame; install the fasteners connecting the suspension C-type slide rail and the suspension nacelle frame, and install the suspension skin fasteners; Step 12, operate the inspection ball (18) of the slide rail inspection ball module (11) again to slide smoothly and without sticking in the C-shaped slide rail groove, and finally form a qualified aircraft hanging assembly; remove the engine front installation section locator (5), the front end positioning angle seat (10) and the rear end positioning angle seat (14), and remove the assembled aircraft hanging assembly from the assembly and inspection integrated tooling.

9. A method for assembling and inspecting a hanging C-shaped slide rail according to claim 8, characterized in that: In the step 5, the front end step graded positioning pin (9) and the rear end step graded positioning pin (15) are selected from large to small to reduce assembly error.

10. A method for assembling and inspecting a hanging C-shaped slide rail according to claim 8, characterized in that: In step 6, the order of trimming the interference between the suspension C-type slide rail and the suspension nacelle frame is to first trim the suspension nacelle frame. If the interference cannot be eliminated after the trimming amount of the suspension nacelle frame reaches the limit, then trim the suspension C-type slide rail.

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