Hanging C-shaped sliding rail assembling and detecting integrated tool and assembling and detecting method

Abstract

The invention provides a hanging C-shaped sliding rail assembling and detecting integrated tool and an assembling and detecting method, and belongs to the technical field of aircraft assembling. The hanging C-shaped sliding rail assembling and detecting integrated tool comprises a main body frame, a main positioner module, a sliding rail assembling and detecting module and a drill jig module; the main body frame serves as other module fixing bases and product assembling references; the main positioner module is used for positioning and fixing the hanging section; the sliding rail assembling and detecting module comprises a guide sliding rail parallel to the axis of the hanging C-shaped sliding rail groove, a positioning angle seat and a step grading positioning pin which are mounted at the two ends of the guide sliding rail and are used for positioning and mounting the hanging C-shaped sliding rail, and a sliding rail detecting ball module capable of sliding along the guide sliding rail; the sliding rail inspection ball module is provided with an inspection ball which is inserted into the hanging C-shaped sliding rail groove and slides along the guide sliding rail to inspect the axis position degree. According to the invention, high-quality assembly is realized, the detectability of the axis of the hanging C-shaped slide rail is improved, and the assembly precision is improved through a hanging C-shaped slide rail assembly whole process detection and secondary assembly compensation process method.

Description

Technical Field

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

[0002] Aircraft suspension 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 design is becoming increasingly complex. There are many intersections between aircraft suspension and engines and wings, and the position accuracy requirements are very high. Any slight deviation may lead to a decline in aircraft performance or safety hazards. The aircraft suspension is assembled by the suspension section, suspension nacelle frame, suspension skin and suspension slide rail. Improving the assembly accuracy of the suspension slide rail and ensuring product stability through the innovation of assembly technology has always been the continuous work goal of engineering and technical personnel in the field of civil aircraft suspension slide rail assembly and processing. The development of aircraft suspension assembly technology in my country is relatively late compared with foreign countries, and the technical level is relatively low, especially for the assembly of suspension C-type slide rails with complex matching relationships. Due to the large manufacturing error of parts, the exploration of assembly technology is relatively complex, and the level of parts manufacturing also reflects the level of domestic assembly technology to a certain extent.

[0003] The traditional hanging C-type slide rail assembly method uses fixed-size locating pins for positioning, and only performs assembly compensation once during the positioning stage. Since fixed-size locating pins have high requirements for parts manufacturing accuracy, which increases the difficulty of part processing, and only one assembly compensation is performed, it is impossible to eliminate the errors in the assembly process and the product assembly accuracy cannot be guaranteed. In addition, the traditional hanging C-type slide rail assembly method cannot detect whether the axis position is qualified during the assembly process, and can only be detected after the assembly is completed and removed from the shelf. At the same time, since there is no detection during the assembly process, it is impossible to determine whether the slide rail position meets the requirements, thereby 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 assembly and inspection tool and method for hanging C-type slide rails, which can realize the detection of the position status of the slide rails during the whole assembly process, solve the design problems of the hanging C-type slide rail assembly tool and the inspection of the slide rail axis position, improve the detectability of the hanging C-type slide rail axis, effectively improve the assembly accuracy of the hanging C-type slide rails, and ensure stable assembly quality.

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

[0006] A hanging C-type slide rail assembly and inspection integrated tooling, the assembly and inspection integrated tooling comprising a main frame, a main positioner module, a slide rail assembly and inspection module and a drilling template module.

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

[0008] The main locator module includes an engine front mounting section locator, an engine rear mounting section locator, a positioning auxiliary support and an under-wing joint locator. The engine front mounting section locator includes two left and right joints fixedly connected by a connecting plate. The engine front mounting section locator is detachably fixed between two columns at one end of the main frame and connected to the front end of the hanging section by a locating pin; the positioning auxiliary support is fixed on the main frame below the engine front mounting section locator, and two rubber wheels are arranged on the top thereof for contacting with the hanging section. The rubber wheels can be adjusted up and down for fine-tuning in the up and down directions when positioning the hanging section; the engine rear mounting section locator is fixed between the bottom beams on both sides near the other end of the main frame. The top surface of the engine rear mounting node locator serves as the engine rear mounting node support surface, and a retractable locating pin is arranged on the top surface to facilitate the retractable locating pin to fall into the engine rear mounting node hole at the rear end of the hanging section to achieve positioning, and an insert is arranged on the head of the retractable locating pin to cooperate with the card slot in the engine rear mounting node hole to achieve fixed limiting; the wing lower joint locator serves as an auxiliary locator, fixed to one end of the main frame close to the engine rear mounting node locator, and is used to be connected to the wing lower joint of the hanging section through a locating pin, and the locating pin is a stepped pin to avoid over-positioning of the hanging section.

[0009] The slide rail assembly and inspection module includes two groups of identical structures, which are symmetrically installed on the bottom beams on both sides of the main frame. The two groups of slide rail assembly and inspection modules include front end step grading positioning pins, front end positioning angle seats, slide rail inspection ball modules, guide slide rails, slide rail pads, rear end positioning angle seats and rear end step grading positioning pins. The slide rail pad is a thick flat plate, fixed on the bottom beam of the main frame and parallel to the axis of the hanging C-type slide rail groove; the guide slide rail is fixed on the slide rail pad, its axis is parallel to the axis of the hanging C-type slide rail groove, and its length is greater than the length of the hanging C-type slide rail groove; the front end positioning angle seat and the rear end positioning angle seat have the same structure, both are provided with bushing holes, and the two are detachably fixed on the bottom beam of the main frame at both ends of the guide slide rail; the front end step graded positioning pin and the rear end step graded positioning pin have the same structure, both are provided with a step, and the two are respectively matched with the bushing holes of the front end positioning angle seat and the rear end positioning angle seat through the fixed size of the step major diameter, and the step minor diameter size of the two is 0.05mm per level, and is divided into five levels, which are respectively used to match the front end and rear end of the hanging C-type slide rail.

[0010] The slide rail inspection ball module includes a latch, an inspection ball seat, an inspection ball, a slide rail block and a connecting plate. A slide rail block is fixed at the bottom of the connecting plate for sliding along the guide slide rail; the inspection ball seat is detachably connected to the connecting plate through two latches, and the inspection ball seat is connected to one end of the connecting plate facing the inner side of the main frame, and the two latches 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 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 can be rotated to be inserted into the interior of the hanging C-type slide rail groove, and slide along the guide slide rail to inspect the position of the axis of the hanging C-type slide rail.

[0011] The drilling jig module is a detachable drilling jig, which is provided with two groups and is detachably fixed on the main 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 maintains a 10mm gap with the hanging skin. The drilling jig module is provided with a number of stop pins and top screw bolts. The stop pins are used to position the outer end face of the hanging skin, and the top screw bolts are used to tighten the hanging skin. The drilling jig module is also provided with bushing holes for making holes in the hanging skin.

[0012] Furthermore, the position of the engine front mounting section locator is determined according to the design position of the engine front mounting section, and the position of the engine rear mounting section locator is determined according to the design position of the engine rear mounting section. The two serve as assembly references of the integrated assembly and inspection tooling, and are consistent with the design reference of the hanging section, and the design reference of the hanging section is the engine front and rear mounting sections.

[0013] Furthermore, of the two joints of the engine front mounting joint locator, the left joint bushing is a round hole, and the right joint bushing is a span-wise oblong hole.

[0014] Furthermore, the locating pins on the wing lower joint locator are graded locating pins, with a diameter of one level per 0.05m, for a total of five levels.

[0015] Furthermore, the drilling template module is made of aluminum alloy and is light and easy to disassemble.

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

[0017] Step 1: Confirm that the integrated installation and inspection tool is intact and free of wear; use the two ear holes at the front end of the hanging section that are not for installation intersection locators and the six frame holes at the rear end as lifting points, and hang the hanging section at a suitable place above the integrated installation and inspection tool.

[0018] Step 2, lower the hanging section into the main frame so that its front end sits on the positioning auxiliary support and the rear end sits on the engine rear mounting node locator, adjust the retractable positioning pin of the engine rear mounting node locator until it is inserted into the engine rear mounting node hole, and the engine rear mounting node is supported on the top surface of the engine rear mounting node locator.

[0019] Step 3, connect the front end of the hanging section with the engine front mounting section locator through the locating pin, use the positioning auxiliary support 7 to fine-tune the front end of the hanging section in the up and down directions until the engine front mounting section locator is connected and fixed to the main frame; insert the insert into the head of the retractable locating pin of the engine rear mounting section locator, press it tightly with the slot in the engine rear mounting section hole, and select the appropriate graded locating pins for the wing lower joint locator to lock it with the wing lower joint.

[0020] Step 4: According to the connection holes drilled between the hanging section and the hanging nacelle frame in the previous process, the hanging nacelle frame is positioned and fixed on the hanging section by process bolts.

[0021] Step 5, insert the front-end stepped locating pins in the two sets of main locator modules into the front ends of the two hanging C-type slide rails through the front-end positioning angle seats, and insert the rear-end stepped locating pins into the rear ends of the hanging C-type slide rails through the rear-end positioning angle seats to achieve preliminary positioning of the two sets of hanging C-type slide rails; the grading selection principle of the front-end stepped locating pins and the rear-end stepped locating pins is from large to small, so as to ensure the axial position of the hanging C-type slide rail groove and reduce assembly errors.

[0022] Step 6, identify the interference between the hanging C-type slide rail and the hanging nacelle frame, and perform trimming according to engineering requirements to eliminate the interference. After the interference is eliminated, measure the assembly gap between the hanging C-type slide rail and the hanging nacelle frame, and install a peelable gasket to eliminate the assembly gap.

[0023] Step 7, place the inspection ball into the hanging C-type slide rail groove, adjust the position and fix the inspection ball seat on the connecting plate through a pin, and slide the inspection ball in the hanging C-type slide rail groove to detect the axis position of the hanging C-type slide rail groove to assist in assembly compensation correction.

[0024] Step 8: After checking that the ball can slide smoothly in the C-shaped slide rail groove without jamming, drill the connecting holes between the C-shaped slide rail and the nacelle frame and temporarily connect them.

[0025] Step 9, use the shape to preliminarily position the suspension skin and lay it on the suspension nacelle frame and the suspension C-type slide rail, install the drill jig module on the main frame, use the stop pins and top screw bolts on the drill jig module to position and tighten the suspension skin, and drill connecting holes through the bushing holes. After completion, remove the drill jig module.

[0026] Step 10, disassemble the 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.

[0027] Step 11, re-position the suspension nacelle frame with the suspension section through the connecting hole, install the fasteners connecting the suspension nacelle frame and the suspension section, re-position and fix the connected suspension nacelle frame and the suspension section through the main positioner module, re-position the suspension C-type slide rail through the slide rail assembly and inspection module, check the axis position through the slide rail inspection ball module, assist in the secondary assembly compensation 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.

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

[0029] Furthermore, in step 6, the principle for correcting the interference between the suspension C-type slide rail and the suspension nacelle frame is to first correct the suspension nacelle frame. If the interference cannot be eliminated after the correction amount of the suspension nacelle frame reaches the limit, then correct the suspension C-type slide rail.

[0030] The beneficial effects of the present invention are as follows: the present invention is based on an integrated tooling solution for parts positioning, hole making and inspection, and through the whole process detection of the hanging C-type slide rail assembly and the secondary assembly compensation process method, high-quality assembly of the hanging C-type slide rail is achieved, the detectability of the axis of the hanging C-type slide rail is improved, and the assembly accuracy of the hanging C-type slide rail is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an isometric diagram of the integrated assembly and inspection tooling.

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

[0033] Figure 3 This is a 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-drilling template module; 5-engine front mounting section locator; 6-engine rear mounting section locator; 7-positioning auxiliary support; 8-wing lower joint locator; 9-front end step graded locating pin; 10-front end positioning angle seat; 11-slide rail inspection ball module; 12-guide slide rail; 13-slide rail pad; 14-rear end positioning angle seat; 15-rear end step graded locating pin; 16-pin; 17-inspection ball seat; 18-inspection ball; 19-slide rail block; 20-connecting plate. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments improved or adjusted by ordinary technicians in this field based on the embodiments of the present invention belong to the protection scope of the present invention.

[0036] like Figures 1 to 3 As shown, a hanging C-type slide rail assembly and inspection integrated tooling includes a main frame 1, a main positioner module 2, a slide rail assembly and inspection module 3 and a drilling template module 4.

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

[0038] like Figure 2As shown, the main locator module 2 includes an engine front mounting section locator 5, an engine rear mounting section locator 6, a positioning auxiliary support 7 and a wing lower joint locator 8. The engine front mounting section locator 5 includes two left and right joints fixedly connected by a connecting plate. The engine front mounting section locator 5 is detachably fixedly installed between two columns at one end of the main frame 1. Its installation position is determined according to the design position of the engine front mounting section, wherein the left joint bushing is a round hole with a diameter of 25.418mm, and the right joint bushing is a span-wise oblong hole with a long diameter of 28.418mm. The two joints are connected to the front end of the hanging section through a locating pin. The locating pin has a diameter of 25.418mm and an axis position accuracy of ±0.05mm; the positioning auxiliary support 7 is fixed on the main frame 1 below the engine front mounting section locator 5, and two rubber wheels are arranged on the top thereof for contacting with the hanging section. The rubber wheels can be adjusted up and down, with a stroke of 110mm, and are used for fine-tuning in the up and down directions when positioning the hanging section; the engine rear mounting section locator 6 is fixed near The installation position between the bottom cross beams on both sides of the other end of the main frame 1 is determined according to the design position of the engine rear mounting node. The top surface of the engine rear mounting node locator 6 serves as the engine rear mounting node support surface. A retractable locating pin is arranged on the top surface with a diameter of 38.196mm and a telescopic stroke of 190mm to facilitate the retractable locating pin to fall into the engine rear mounting node hole at the rear end of the hanging section to achieve positioning. An insert is arranged on the head of the retractable locating pin to cooperate with the card slot in the engine rear mounting node hole to achieve fixed limit; the wing lower joint locator 8 is fixed at one end of the main frame 1 close to the engine rear mounting node locator 6 as an auxiliary locator, and is used to be connected to the wing lower joint of the hanging section through a locating pin. The locating pin is a graded pin with a diameter of 47.80mm-48.00mm, one level every 0.05m, and a total of five levels to avoid over-positioning of the hanging section.

[0039] like Figure 2As shown, the slide rail assembly and inspection module 3 includes two groups of the same structure, which are symmetrically installed on the bottom 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 a thick flat plate with a thickness of 10 mm, which is fixed on the bottom beam of the main frame 1 and is parallel to the axis of the hanging C-type slide rail groove; 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. Two guide slide rails 12 are fixed side by side on each slide rail pad 13, and the length of the two guide slide rails 12 is 800 mm, which is greater than the length of the hanging C-type 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 , both are detachably fixedly installed on the bottom cross beam of the main frame 1 at both ends of the guide slide rail 12; the front end step graded positioning pin 9 has the same structure as the rear end step graded positioning pin 15, and both are provided with a step, the major diameter of the step is 30mm, 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, and the minor diameter of the steps of the two are 29.04mm-29.25mm, each level is 0.05mm, and is divided into five levels, which are respectively used to cooperate with the front end and rear end of the hanging C-type slide rail.

[0040] like Figure 3 As shown, the slide rail inspection ball module 11 includes a latch 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 two guide rails 12; the inspection ball seat 17 is detachably connected to the connecting plate 20 through two latches 16, and the inspection ball seat 17 is connected to one end of the connecting plate 20 facing the inner side of the main frame 1, and the two latches 16 are diagonally distributed on the connecting plate 20, and 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 cut symmetrically along the diameter plane of the sphere, with a thickness of 12 mm and a diameter of 28.69 mm. It is set according to the requirements of the axis position of the slide rail groove, can be rotated and inserted into the interior of the hanging C-type slide rail groove, and slide along the guide slide rail 12 to inspect the axis position of the hanging C-type slide rail.

[0041] The drilling jig module 4 is a detachable drilling jig, which is provided with two groups and can be detachably fixed on the main frame 1. 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 maintains a 10mm gap with the hanging skin. The drilling jig module 4 is provided with a number of stop pins and top screw bolts. The stop pins are used to position the outer end face of the hanging skin, and the top screw bolts are used to tighten the hanging skin. The drilling jig module 4 is also provided with bushing holes for making holes in the hanging skin. The drilling jig module 4 is made of aluminum alloy, with a hollow design at the non-hole part, which is light and easy to disassemble.

[0042] A method for assembling and inspecting a suspended C-type slide rail is implemented based on the above-mentioned integrated assembly and inspection tool, comprising the following steps:

[0043] Step 1, processing environment requirements: ensure that the processing environment temperature is 18℃~26℃, the relative humidity is 25%~65%, the dust particle content with a dustiness of no more than 10μm is no more than 10 / L, and the illumination is not less than 300Lux; confirm that the assembly and inspection tooling is intact and free of wear; use the two ear holes at the front end of the hanging section that are not for the installation intersection locator and the six frame holes at the rear end as lifting points, and hang the hanging section at a suitable place above the assembly and inspection tooling.

[0044] Step 2, lower the hanging section into the main frame 1 so that its front end sits on the positioning auxiliary support 7 and the rear end sits on the engine rear mounting node locator 6, adjust the retractable positioning pin of the engine rear mounting node locator 6 until it is inserted into the engine rear mounting node hole, and the engine rear mounting node is supported on the top surface of the engine rear mounting node locator 6.

[0045] Step 3, connect the front end of the hanging section to the engine front mounting section locator 5 through the locating pin, use the positioning auxiliary support 7 to fine-tune the front end of the hanging section in the up and down directions until the engine front mounting section locator 5 is connected and fixed to the main frame 1; insert the insert into the head of the retractable locating pin of the engine rear mounting section locator 6, and press it tightly with the slot in the engine rear mounting section hole, select the appropriate graded locating pins for the wing lower joint locator 8, and adopt the principle of selecting from large to small, and preferably use the locating pin with a diameter of 48.00 mm to lock it with the wing lower joint.

[0046] Step 4: Based on the connection holes drilled between the hanging section and the hanging nacelle frame in the previous process, the hanging nacelle frame is positioned and fixed on the hanging section by process bolts with a diameter of 7.94 mm.

[0047] Step 5, insert the front end stepped graded locating pins 9 in the two groups of main locator modules 2 into the front ends of the two hanging C-type slide rails through the front end positioning angle seats 10, and insert the rear end stepped graded locating pins 15 into the rear end of the hanging C-type slide rails through the rear end positioning angle seats 14, so as to realize the preliminary positioning of the two groups of hanging C-type slide rails; the grading selection principle of the front end stepped graded locating pins 9 and the rear end stepped graded locating pins 15 is from large to small, and the locating pins with a diameter of 29.25mm are preferably used to ensure the axial position of the hanging C-type slide rail groove and reduce assembly errors.

[0048] Step 6, identify the interference between the hanging C-type slide rail and the hanging nacelle frame, and perform trimming according to the engineering requirements to eliminate the interference. The principle of interference trimming is to trim the hanging nacelle frame first. If the interference cannot be eliminated after the trimming amount of the hanging nacelle frame reaches the limit, then trim the hanging C-type slide rail. The trimming and grinding thickness shall not exceed 0.5mm; after the interference is eliminated, measure the assembly gap between the hanging C-type slide rail and the hanging nacelle frame, cut and add a peelable gasket no larger than 2mm to eliminate the assembly gap.

[0049] Step 7, place the inspection ball 18 into the hanging C-shaped slide rail groove, adjust the position and fix the inspection ball seat 17 on the connecting plate 20 through the pin 16, and slide the inspection ball 18 in the hanging C-shaped slide rail groove to detect the axis position of the hanging C-shaped slide rail groove to assist in assembly compensation correction.

[0050] Step 8, after checking that the ball 18 can slide smoothly without jamming in the hanging C-shaped slide rail groove, drill the connecting holes between the hanging C-shaped slide rail and the hanging nacelle frame and use a pull code to temporarily connect them.

[0051] Step 9, use the shape to preliminarily position the suspension skin and lay it on the suspension nacelle frame and the suspension C-type slide rail, install the drill jig module 4 on the main frame 1, use the stop pins and top screw bolts on the drill jig module 4 to position and tighten the suspension skin, and drill connecting holes through the bushing holes. After completion, remove the drill jig module 4.

[0052] Step 10, disassemble the suspension sections, suspension skins, suspension nacelle frames and suspension C-type slide rails, remove burrs from the connection holes, remove sharp edges of peelable gaskets and refine the appearance.

[0053] Step 11, re-position the suspension nacelle frame with the suspension section through the connecting hole, install the fasteners connecting the suspension nacelle frame and 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 and check the axis position through the slide rail inspection ball module 11, assist in the secondary assembly compensation 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.

[0054] Step 12, operate the inspection ball 18 of the slide rail inspection ball module 11 again to slide smoothly and without jamming 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.

[0055] The above-described embodiments merely express the implementation methods of the present invention, but they should not be understood as limiting the scope of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to 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 C-type rail hanging and inspection integrated tooling 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 tool for assembling and inspecting a hanging C-shaped slide rail 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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