Intelligent welding system and method for combined air inlet fairing of engine nacelle

Abstract

The invention belongs to the technical field of engine nacelle part production, and particularly relates to an intelligent welding system and method for an engine nacelle combined type air inlet fairing. An inner spoiler moving groove and an outer spoiler moving groove are machined in the air inlet duct casting blank borne by the air inlet duct positioning assembly through the inner cutting assembly and the outer cutting assembly correspondingly, and the air inlet duct casting blank is formed into an air inlet duct component; a first clamping feeding assembly, a second clamping feeding assembly, a third clamping feeding assembly and a fourth clamping feeding assembly are used for feeding an inner reinforcing part, a heating part, a noise reduction and sound absorption part preassembled with a spoiler assembly and an annular cover plate into a cavity of the air inlet channel component, and the fed parts are welded and fixed into the cavity of the air inlet channel component through a welding assembly; in this way, intelligent welding and assembling operation of the combined air inlet fairing can be achieved, and the combined air inlet fairing has the advantages of being high in structural strength, good in noise reduction and sound absorption effect and capable of achieving automatic deicing of the lip and air inlet distortion control.

Description

Technical Field

[0001] The present invention belongs to the technical field of engine nacelle component production, and in particular relates to an intelligent welding system and method for an engine nacelle combined air intake fairing. Background Art

[0002] The air intake cowling in the engine nacelle performs multiple critical functions. The following is a detailed explanation of its main functions: First, the air intake cowling's primary function is to regulate and optimize airflow. During flight, the engine requires a large volume of air to maintain normal operation. The air intake cowling's unique design forces airflow in a specific direction, typically rearward, ensuring a stable and efficient air supply to the engine. This optimized airflow not only improves engine thrust efficiency but also reduces flight drag, ultimately enhancing overall aircraft performance. Second, the air intake cowling also protects the engine. During flight, the aircraft may encounter various foreign objects, such as birds and hail. Direct impact with the engine can cause serious damage. The air intake cowling acts as a barrier, preventing these foreign objects from directly contacting critical engine components. Even if foreign objects do strike the cowling, its unique design and material selection ensure that they are deflected in a graceful arc, minimizing damage to the engine. Furthermore, the air intake cowling helps reduce noise. Engine operation generates considerable noise. The air intake fairing, with its streamlined design and optimized airflow path, effectively reduces the propagation and reflection of noise, thereby lowering the aircraft's noise level during flight and improving passenger comfort.

[0003] The air intake fairing in traditional engine nacelles has low structural strength, weak noise reduction and sound absorption effects, cannot achieve automatic lip de-icing, and does not have spoilers for intake distortion control. To this end, our company has innovatively designed a combined air intake fairing suitable for engine nacelles.

[0004] Existing welding systems have shortcomings. First, they cannot meet the requirements for automated assembly and welding of components in modular air intake fairings. Second, the lip of the modular air intake fairings assembled by welding lacks a heater on the inside, making automatic de-icing of the lip impossible. Third, the modular air intake fairings assembled by welding lack spoilers, making intake distortion control impossible at low speeds. Therefore, optimization and improvement of the existing welding system are needed. Summary of the Invention

[0005] The object of the present invention is to overcome at least one of the above-mentioned problems existing in the prior art and to provide an intelligent welding system and method for an engine nacelle combined air intake fairing.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions: The present invention provides an intelligent welding system for an engine nacelle combined air intake fairing, comprising a controller and an air intake duct positioning assembly, an inner cutting assembly, an outer cutting assembly, a first clamping and loading assembly, a second clamping and loading assembly, a third clamping and loading assembly, a fourth clamping and loading assembly, and a welding assembly connected thereto; The air intake duct positioning assembly is used to realize the positioning and placement of the air intake duct casting blank. The air intake duct positioning assembly is sequentially provided with a cutting station, a first clamping and loading station, a second clamping and loading station, a third clamping and loading station, a fourth clamping and loading station and a welding station along the circumferential direction; The inner cutting assembly and the outer cutting assembly are respectively arranged near the inner and outer sides of the cutting station, and are used to respectively process the inner spoiler movable groove and the outer spoiler movable groove on both sides of the cavity of the intake duct casting blank to form the intake duct component; The first clamping and loading assembly is disposed near the second clamping and loading station and is used to deliver the inner reinforcement into the cavity of the air intake component; The second clamping and loading assembly is arranged near the first clamping and loading station and is used to deliver the heating element into the cavity of the air inlet component; The third clamping and loading assembly is arranged near the third clamping and loading station, and is used to deliver the noise reduction and sound absorbing component pre-installed with the spoiler assembly into the cavity of the air intake component; The fourth clamping and loading assembly is arranged near the fourth clamping and loading station and is used to deliver the annular cover plate into the cavity of the air inlet member; The welding assembly is used to weld and fix the inner reinforcement, the heating element, the noise reduction and sound absorption element, and the annular cover plate in the cavity of the air intake member; The air inlet duct component, the inner reinforcement component, the heating component, the noise reduction and sound absorption component, the spoiler assembly, and the annular cover plate together constitute a combined air inlet fairing.

[0007] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the cross-section of the cavity in the air intake duct component is a semi-elliptical structure that is narrow inside and wide outside, the inner and outer wall shapes of the inner reinforcement are matched with the shapes of the two side walls of the cavity, and after the inner reinforcement is installed, the distance between its rear end portion and the opening surface of the cavity is greater than the thickness value of the annular cover plate.

[0008] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the heating element is composed of an arc-shaped heating tube, an inner support block and a first connecting rod, and the first connecting rods are respectively installed at both ends of the arc-shaped heating tube, and the connection between the arc-shaped heating tube and the first connecting rod is covered with an inner support block, and the shape of the inner support block cooperates with the shape of the front end portion of the internal reinforcement.

[0009] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the spoiler assembly is composed of a mechanical clamp, a spoiler and a second connecting rod, and the mechanical clamp is provided with two spoilers that can be flipped or translated relative to each other, and the two spoilers can respectively extend outward through the inner spoiler movable groove and the outer spoiler movable groove.

[0010] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the noise reduction and sound absorbing component is a honeycomb structure core, and the shape of the noise reduction and sound absorbing component matches the shape of the inner reinforcement after removing the corresponding area of ​​the inner support block; the noise reduction and sound absorbing component is provided with radial through holes for facilitating the installation of the spoiler assembly and axial through holes for facilitating the passage of the first connecting rod and the second connecting rod, and the annular cover plate is provided with exposure holes for facilitating the passage of the first connecting rod and the second connecting rod.

[0011] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the air intake positioning assembly includes a first substrate, a first rotary drive and an annular positioning block, the fixed outer ring of the first rotary drive is installed on the first substrate, and an annular positioning block is installed on the upper side of the movable inner ring of the first rotary drive, and an annular positioning groove is provided in the annular positioning block to cooperate with the lip of the air intake casting blank.

[0012] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the main structures of the internal cutting component and the external cutting component are the same; the internal cutting component includes a second base plate, a horizontal push rod, a cutting bracket, a cutting knife and a cutting motor, the cylinder body of the horizontal push rod is fixed on the second base plate, and the movable end of the horizontal push rod is installed with a cutting knife and a cutting motor for driving it to rotate through the cutting bracket.

[0013] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the main structures of the first clamping and loading assembly, the second clamping and loading assembly, and the third clamping and loading assembly are the same; the first clamping and loading assembly includes a third base plate, a servo motor, a rotating plate, a first vertical push rod, and a clamper, the cylinder of the servo motor is fixed on the third base plate, the output end of the servo motor is mounted with a rotating plate, the upper sides of both ends of the rotating plate are symmetrically mounted with first vertical push rods, the movable end of the first vertical push rod is mounted with a clamper, and the clamper is a multi-claw mechanical clamp or a suction cup clamp; The fourth clamping and loading assembly includes a fourth base plate, a horizontal linear guide pair, a mounting plate, a second vertical push rod and an annular suction cup. The slide rail of the horizontal linear guide pair is fixed on the fourth base plate. The slider of the horizontal linear guide pair is installed with the second vertical push rod through the mounting plate. The movable end of the second vertical push rod is installed with an annular suction cup for adsorbing the annular cover plate.

[0014] Furthermore, in the intelligent welding system of the above-mentioned engine nacelle combined air intake fairing, the welding assembly includes a fifth base plate, a third vertical push rod, a second rotary drive, a mounting seat, a rotary block, a laser welding head, a driving gear and an adjusting motor. The cylinder body of the third vertical push rod is fixed on the fifth base plate, and the movable end of the third vertical push rod is installed with a mounting seat via the second rotary drive. The upper part of the mounting seat is embedded with an adjusting motor, and the output end of the adjusting motor is installed with a driving gear. The lower part of the mounting seat is movable limited by a rotary block, and the bottom end of the rotary block is installed with a laser welding head. The upper end of the rotary block is provided with an arc surface, and the arc surface is evenly distributed with teeth and grooves that mesh with the driving gear.

[0015] The present invention also provides an intelligent welding method for an engine nacelle combined air intake fairing, which is implemented based on the above-mentioned intelligent welding system for the engine nacelle combined air intake fairing and includes the following steps: S1. Use a crane to transfer the air intake casting blank to the air intake positioning assembly; S2. Using the inner cutting assembly and the outer cutting assembly to machine the inner spoiler movable grooves and the outer spoiler movable grooves on the intake duct positioning assembly. After each set of movable grooves is machined, the intake duct positioning assembly drives the intake duct casting blank to rotate a certain angle until all sets of movable grooves are machined, thereby obtaining the intake duct component. S3. Using the first clamping and loading assembly, the inner reinforcement is fed into the cavity of the air intake duct component. After each feeding operation, the air intake duct positioning assembly is used to rotate the air intake duct component by a certain angle. The inner reinforcement transferred to the welding station is welded to the inner wall of the cavity of the air intake duct component using the welding assembly. S4. Using the second clamping and loading assembly, the heating element is fed into the cavity of the air intake duct component. After each feeding operation, the air intake duct positioning assembly is used to rotate the heating element by a certain angle. The inner support block of the heating element transferred to the welding station is welded to the inner wall of the cavity of the air intake duct component and the inner reinforcement member using the welding assembly. S5. Use the third clamping and loading assembly to deliver the noise reduction and sound absorbing component equipped with the spoiler assembly into the cavity of the air intake component. After each delivery operation, use the air intake positioning assembly to rotate the air intake component by a certain angle. Use the welding assembly to weld the noise reduction and sound absorbing component, which has been transferred to the welding station, to the inner wall of the cavity of the air intake component and the inner reinforcement. S6. Use the fourth clamping and loading assembly to send the annular cover plate into the cavity of the air inlet duct component, use the air inlet duct positioning assembly to drive the annular cover plate to rotate, and use the welding assembly to weld and fix the annular cover plate to the inner wall of the cavity of the air inlet duct component to complete the welding and assembly operation of the combined air inlet fairing.

[0016] The beneficial effects of the present invention are: 1. The present invention provides an intelligent welding system for a combined air intake fairing of an engine nacelle, which mainly comprises a controller, an air intake duct positioning assembly, an inner cutting assembly, an outer cutting assembly, a first clamping and loading assembly, a second clamping and loading assembly, a third clamping and loading assembly, a fourth clamping and loading assembly, and a welding assembly. The inner cutting assembly and the outer cutting assembly are used to respectively process an inner spoiler movable groove and an outer spoiler movable groove on an air intake duct casting blank carried by the air intake duct positioning assembly to form the air intake duct component. The first clamping and loading assembly, the second clamping and loading assembly, the third clamping and loading assembly, and the fourth clamping and loading assembly are used to respectively deliver an inner reinforcement member, a heating member, a noise reduction and sound absorbing member pre-installed with a spoiler assembly, and an annular cover plate into a cavity of the air intake duct component. The delivered components are welded and fixed in the cavity of the air intake duct component by the welding assembly. In this way, the intelligent welding and assembly operation of the combined air intake fairing can be realized.

[0017] 2. The welded and assembled combined air intake fairing of the present invention has a reasonable structural design. It is mainly composed of an air intake duct component, an internal reinforcement component, a heating component, a noise reduction and sound absorption component, a spoiler assembly, and an annular cover plate. The internal reinforcement component is used to improve the structural strength of the air intake duct component; the heating component is used to achieve automatic de-icing of the lip; the noise reduction and sound absorption component is used to improve the overall noise reduction and sound absorption effect; the spoiler assembly is used to reduce the distortion of the air intake duct at low speeds, while having no obvious adverse effect on the nacelle at high speeds. The thin-sheet spoilers of the spoiler assembly can reduce the tendency of flow separation through streamwise vortices when opened, thereby improving the uniformity of the flow field at the air intake duct outlet. When retracted, the thin-sheet spoilers do not affect the original performance of the nacelle.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a block diagram of the intelligent welding system of the present invention; Figure 2 Schematic diagram of the structure of the combined air intake fairing in the present invention; Figure 3 It is a schematic diagram of the structural decomposition of the combined air intake fairing of the present invention; Figure 4 This is a schematic diagram of the combined air intake fairing of the present invention after omitting the air intake duct component; Figure 5Schematic diagram of the structure of the air intake component in the present invention; Figure 6 A half-section schematic diagram of an air intake component in the present invention; Figure 7 Schematic diagram of the structure of the air intake casting blank in the present invention; Figure 8 Schematic diagram of the structure of the inner reinforcement member in the present invention; Figure 9 Schematic diagram of the structure of the heating element in the present invention; Figure 10 Schematic diagram of the position of the spoiler in the spoiler assembly of the present invention when the spoiler is stored; Figure 11 Schematic diagram of the position of the spoiler in the spoiler assembly of the present invention when the spoiler is extended; Figure 12 Schematic diagram of the structure of the spoiler assembly of the present invention when the spoiler is stored; Figure 13 Schematic diagram of the structure of the spoiler assembly of the present invention when the spoiler is extended; Figure 14 It is a structural schematic diagram of the air intake positioning assembly in the present invention; Figure 15 Schematic diagram of the structure of the inner cutting component of the present invention; Figure 16 Schematic diagram of the structure of the first clamping and loading assembly in the present invention; Figure 17 Schematic diagram of the structure of the fourth clamping and loading assembly in the present invention; Figure 18 Schematic diagram of the structure of the welding assembly in the present invention; In the accompanying drawings, the components represented by the reference numerals are as follows: 1-Controller; 2-inlet duct positioning assembly, 201-first substrate, 202-first rotary driver, 203-annular positioning block; 3-inner cutting assembly, 301-second base plate, 302-horizontal push rod, 303-cutting bracket, 304-cutting blade, 305-cutting motor; 4-External cutting assembly; 5-first clamping and loading assembly, 501-third base plate, 502-servo motor, 503-rotating plate, 504-first vertical push rod, 505-clamp; 6- second clamping and loading assembly; 7- third clamping and loading assembly; 8-fourth clamping and loading assembly, 801-fourth base plate, 802-horizontal linear guide pair, 803-mounting plate, 804-second vertical push rod, 805-annular suction cup; 9-welding assembly, 901-fifth base plate, 902-third vertical push rod, 903-second rotary drive, 904-mounting seat, 905-rotating block, 906-laser welding head, 907-tooth groove, 908-driving gear; 10-Combined air intake fairing; 11-intake duct component, 111-intake duct casting blank, 112-cavity, 113-inner spoiler movable groove, 114-outer spoiler movable groove; 12-Inner reinforcement; 13-heating element, 131-arc heating tube, 132-inner support block, 133-first connecting rod; 14-Noise reduction and sound absorption parts; 15-spoiler assembly, 151-mechanical gripper, 152-spoiler, 153-second connecting rod; 16-Annular cover. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] like Figure 1-Figure 7As shown, this embodiment provides an intelligent welding system for an engine nacelle combined air intake fairing, including a controller 1 and an air intake duct positioning assembly 2, an inner cutting assembly 3, an outer cutting assembly 4, a first clamping and loading assembly 5, a second clamping and loading assembly 6, a third clamping and loading assembly 7, a fourth clamping and loading assembly 8, and a welding assembly 9 connected thereto. The air intake duct positioning assembly 2 is used to realize the positioning and placement of the air intake duct casting blank 111. The air intake duct positioning assembly 2 is provided with a cutting station, a first clamping and loading station, a second clamping and loading station, a third clamping and loading station, a fourth clamping and loading station and a welding station in sequence along the circumferential direction; the inner cutting assembly 3 and the outer cutting assembly 4 are respectively arranged close to the inner and outer sides of the cutting station, and are used to respectively process the inner spoiler movable groove 113 and the outer spoiler movable groove 114 on both sides of the cavity 112 of the air intake duct casting blank 111 to form it into the air intake duct component 11; the first clamping and loading assembly 5 is arranged close to the second clamping and loading station, and is used to deliver the inner reinforcement 12 into the cavity 112 of the air intake duct component 11; the second clamping and loading assembly 6 is arranged close to the first clamping and loading station The third clamping and loading assembly 7 is arranged near the third clamping and loading station, and is used to deliver the noise reduction and sound absorbing component 14 pre-installed with the spoiler assembly 15 into the cavity 112 of the air intake duct component 11; the fourth clamping and loading assembly 8 is arranged near the fourth clamping and loading station, and is used to deliver the annular cover plate 16 into the cavity 112 of the air intake duct component 11; the welding assembly 9 is used to weld and fix the inner reinforcement 12, the heating element 13, the noise reduction and sound absorbing component 14, and the annular cover plate 16 in the cavity 112 of the air intake duct component 11; the air intake duct component 11, the inner reinforcement 12, the heating element 13, the noise reduction and sound absorbing component 14, the spoiler assembly 15, and the annular cover plate 16 together constitute a combined air intake fairing 10.

[0023] In this embodiment, the cross section of the cavity 112 in the air inlet member 11 is a semi-elliptical structure that is narrow inside and wide outside. Figure 8 As shown, the inner and outer wall shapes of the inner reinforcement 12 match the shapes of the two side walls of the cavity 112. After the inner reinforcement 12 is installed, the distance between its rear end and the opening surface of the cavity 112 is greater than the thickness of the annular cover plate 16.

[0024] like Figure 9 As shown, the heating element 13 is composed of an arc-shaped heating tube 131, an inner support block 132 and a first connecting rod 133. The first connecting rod 133 is respectively installed at both ends of the arc-shaped heating tube 131. The connection between the arc-shaped heating tube 131 and the first connecting rod 133 is covered with an inner support block 132. The shape of the inner support block 132 cooperates with the shape of the front end portion of the internal reinforcement 12.

[0025] like Figure 10-13As shown, the spoiler assembly 15 is composed of a mechanical clamp 151, a spoiler 152 and a second connecting rod 153. The mechanical clamp 151 is provided with two spoilers 152 that can be flipped or translated relative to each other. The two spoilers 152 can extend outward through the inner spoiler movable groove 113 and the outer spoiler movable groove 114 respectively.

[0026] In this embodiment, the noise reduction and sound absorbing member 14 has a honeycomb structure core (the figure is not simplified and the honeycomb microporous structure is not shown). The shape of the noise reduction and sound absorbing member 14 matches the shape of the inner reinforcement member 12 after removing the area corresponding to the inner support block 132. The noise reduction and sound absorbing member 14 is provided with radial through-holes for facilitating the installation of the spoiler assembly 15 and axial through-holes for facilitating the passage of the first and second connecting rods 133, 153. The annular cover plate 16 is provided with exposure holes for facilitating the passage of the first and second connecting rods 133, 153.

[0027] like Figure 14 As shown, the air inlet duct positioning assembly 2 includes a first substrate 201, a first rotary driver 202 and an annular positioning block 203. The fixed outer ring of the first rotary driver 202 is installed on the first substrate 201, and the annular positioning block 203 is installed on the upper side of the movable inner ring of the first rotary driver 202. The annular positioning block 203 is provided with an annular positioning groove that cooperates with the lip of the air inlet duct casting blank 111.

[0028] The working principle of the air intake duct positioning assembly 2 is to use the annular positioning groove of the annular positioning block 203 to position and place the air intake duct casting blank 111. In order to prevent subsequent relative displacement, anti-slip rubber pads can be added at intervals on the inner wall of the annular positioning groove.

[0029] like Figure 15 As shown, the inner cutting assembly 3 includes a second base plate 301, a horizontal push rod 302, a cutting bracket 303, a cutting blade 304, and a cutting motor 305. The cylinder of the horizontal push rod 302 is fixed to the second base plate 301. The movable end of the horizontal push rod 302 is mounted with the cutting blade 304 and the cutting motor 305 for driving the cutting blade 304 to rotate via the cutting bracket 303. The main structure of the inner cutting assembly 3 and the outer cutting assembly 4 is the same.

[0030] The working principle of the inner cutting assembly 3 is as follows: the horizontal push rod 302 is used to drive the cutting knife 304 to move horizontally, and the cutting motor 305 is used to drive the cutting knife 304 to rotate, thereby achieving cutting.

[0031] like Figure 16As shown, the first clamping and loading component 5 includes a third base plate 501, a servo motor 502, a rotating plate 503, a first vertical push rod 504 and a clamper 505. The cylinder of the servo motor 502 is fixed on the third base plate 501. The output end of the servo motor 502 is equipped with a rotating plate 503. The first vertical push rod 504 is symmetrically installed on the upper sides of both ends of the rotating plate 503. The movable end of the first vertical push rod 504 is equipped with a clamper 505. The clamper 505 is a multi-claw mechanical clamp or a suction cup clamp. The main structures of the first clamping and loading component 5, the second clamping and loading component 6 and the third clamping and loading component 7 are the same.

[0032] The working principle of the first clamping and loading component 5 is as follows: the two sides of the rotating plate serve as the loading end and the feeding end respectively, and the servo motor 502 can drive the clamper 505 at the loading end and the feeding end to switch positions, and the clamper 505 is used to clamp or adsorb the object, and the first vertical push rod 504 is used to push the object into the set position of the cavity 112.

[0033] like Figure 17 As shown, the fourth clamping and loading assembly 8 includes a fourth base plate 801, a horizontal linear guide pair 802, a mounting plate 803, a second vertical push rod 804 and an annular suction cup 805. The slide rail of the horizontal linear guide pair 802 is fixed on the fourth base plate 801, and the slider of the horizontal linear guide pair 802 is installed with the second vertical push rod 804 through the mounting plate 803. The movable end of the second vertical push rod 804 is installed with an annular suction cup 805 for adsorbing the annular cover plate 16.

[0034] The working principle of the fourth clamping and loading component 8 is as follows: the horizontal linear guide pair 802 is used to drive the annular suction cup 805 and the adsorbed annular suction cup 805 to move to the top of the cavity 112, and the second vertical push rod 804 is used to push the annular suction cup 805 into the set position of the cavity 112.

[0035] like Figure 18 As shown, the welding assembly 9 includes a fifth base plate 901, a third vertical push rod 902, a second rotary driver 903, a mounting seat 904, a rotating block 905, a laser welding head 906, a driving gear 908 and an adjusting motor. The cylinder body of the third vertical push rod 902 is fixed on the fifth base plate 901, and the movable end of the third vertical push rod 902 is mounted with a mounting seat 904 via the second rotary driver 903. The upper part of the mounting seat 904 is embedded with an adjusting motor, and the output end of the adjusting motor is mounted with a driving gear 908. The lower part of the mounting seat 904 is movable limited by a rotating block 905, and the bottom end of the rotating block 905 is mounted with a laser welding head 906. The upper end of the rotating block 905 is provided with an arc surface, and the arc surface is evenly distributed with tooth grooves 907 that mesh with the driving gear 908.

[0036] The working principle of the welding assembly 9: the third vertical push rod 902 is used to adjust the height position of the laser welding head 906, the second rotary drive 903 is used to adjust the horizontal circumferential position of the laser welding head 906, and the adjusting motor is used to drive the active gear 908 to rotate forward or reverse, thereby adjusting the inclination angle of the laser welding head 906 relative to the vertical plane.

[0037] This embodiment also provides an intelligent welding method for an engine nacelle combined air intake fairing, comprising the following steps: S1. Use a crane to transfer the air intake casting blank 111 to the air intake positioning assembly 2.

[0038] S2. Use the inner cutting component 3 and the outer cutting component 4 to process the inner spoiler movable groove 113 and the outer spoiler movable groove 114 on the air intake duct positioning component 2. After completing the processing of each set of movable grooves, the air intake duct positioning component 2 drives the air intake duct casting blank 111 to rotate a certain angle until the processing of all sets of movable grooves is completed to obtain the air intake duct component 11.

[0039] S3. Use the first clamping and loading assembly 5 to insert the inner reinforcement 12 into the cavity 112 of the air intake duct component 11. After each insertion operation, use the air intake duct positioning assembly 2 to rotate the air intake duct component 11 to a certain angle. Then, use the welding assembly 9 to weld the inner reinforcement 12, which has been transferred to the welding station, to the inner wall of the cavity 112 of the air intake duct component 11. The inner and outer walls of the inner reinforcement 12 can be pre-coated with adhesive to prevent displacement before welding.

[0040] S4. Use the second clamping and loading assembly 6 to insert the heating element 13 into the cavity 112 of the air intake duct component 11. After each insertion operation, use the air intake duct positioning assembly 2 to rotate the heating element 13 to a certain angle. Then, use the welding assembly 9 to weld the inner support block 132 of the heating element 13, which has been transferred to the welding station, to the inner wall of the cavity 112 of the air intake duct component 11 and the inner reinforcement member 12. The outer surface of the inner support block 132 of the heating element 13 can be pre-coated with adhesive to prevent displacement before welding.

[0041] S5. Use the third clamping and loading assembly 7 to deliver the noise reduction and sound absorbing member 14, equipped with the spoiler assembly 15, into the cavity 112 of the air intake duct member 11. After each delivery operation, use the air intake duct positioning assembly 2 to rotate the air intake duct member 11 a certain angle. Use the welding assembly 9 to weld the noise reduction and sound absorbing member 14, now transferred to the welding station, to the inner wall of the cavity 112 of the air intake duct member 11 and the inner reinforcement member 12. During installation, ensure that the first connecting rod 133 of the heating element 13 protrudes through the axial through-hole of the noise reduction and sound absorbing member 14. Before welding, use a mobile power supply to power the mechanical gripper 151 of the spoiler assembly 15 and test whether the two spoilers 152 can extend outward through the inner spoiler movable slot 113 and the outer spoiler movable slot 114, respectively.

[0042] S6. Use the fourth clamping and loading assembly 8 to feed the annular cover plate 16 into the cavity 112 of the air intake duct component 11. Use the air intake duct positioning assembly 2 to drive the annular cover plate 16 to rotate. Use the welding assembly 9 to weld the annular cover plate 16 to the inner wall of the cavity 112 of the air intake duct component 11, completing the welding and assembly operation of the combined air intake fairing. During installation, ensure that the first connecting rod 133 of the heating element 13 and the second connecting rod 153 of the spoiler assembly 15 pass through the exposure hole of the annular cover plate 16. The air intake duct component 11, the inner reinforcement 12, the heating element 13, the noise reduction and sound absorption component 14, the spoiler assembly 15, and the annular cover plate 16 together constitute the combined air intake fairing 10. The inner surface of the annular cover plate 16 can be pre-coated with adhesive to prevent displacement before welding.

[0043] The specific application of this embodiment is as follows: This intelligent welding system mainly consists of a controller 1, an air intake duct positioning component 2, an inner cutting component 3, an outer cutting component 4, a first clamping and loading component 5, a second clamping and loading component 6, a third clamping and loading component 7, a fourth clamping and loading component 8 and a welding component 9. The inner cutting component 3 and the outer cutting component 4 are used to process the inner spoiler active groove 113 and the outer spoiler active groove 114 on the air intake duct casting blank 111 carried by the air intake duct positioning component 2, so that the inner spoiler active groove 113 and the outer spoiler active groove 114 are formed into an air intake duct. The air duct component 11; the inner reinforcement 12, the heating element 13, the noise reduction and sound absorbing component 14 pre-installed with the spoiler assembly 15, and the annular cover plate 16 are respectively delivered into the cavity 112 of the air inlet duct component 11 using the first clamping and loading assembly 5, the second clamping and loading assembly 6, the third clamping and loading assembly 7, and the fourth clamping and loading assembly 8, and the delivered components are welded and fixed in the cavity 112 of the air inlet duct component 11 using the welding assembly 9; in this way, the intelligent welding and assembly operation of the combined air inlet fairing 10 can be realized.

[0044] The combined air intake fairing 10 is mainly composed of an air intake duct component 11, an inner reinforcement 12, a heating element 13, a noise reduction and sound absorption component 14, a spoiler assembly 15, and an annular cover plate 16; the inner reinforcement 12 is used to improve the structural strength of the air intake duct component 11; the heating element 13 is used to achieve automatic de-icing of the lip; the noise reduction and sound absorption component 14 is used to improve the overall noise reduction and sound absorption effect; the spoiler assembly 15 is used to reduce the distortion of the air intake duct at low speed, and at the same time has no obvious adverse effect on the nacelle at high speed. The thin-sheet spoilers of the spoiler assembly 15 can reduce the tendency of flow separation through the streamwise vortex when opened, thereby improving the uniformity of the flow field at the air intake duct outlet. When retracted, the thin-sheet spoilers do not affect the original performance of the nacelle.

[0045] The preferred embodiments of the present invention disclosed above are merely intended to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Intelligent welding system for engine nacelle combined air intake fairing, characterized by: It includes a controller and an air inlet positioning assembly, an inner cutting assembly, an outer cutting assembly, a first clamping and loading assembly, a second clamping and loading assembly, a third clamping and loading assembly, a fourth clamping and loading assembly, and a welding assembly connected thereto; The air intake duct positioning assembly is used to realize the positioning and placement of the air intake duct casting blank. The air intake duct positioning assembly is sequentially provided with a cutting station, a first clamping and loading station, a second clamping and loading station, a third clamping and loading station, a fourth clamping and loading station and a welding station along the circumferential direction; The inner cutting assembly and the outer cutting assembly are respectively arranged near the inner and outer sides of the cutting station, and are used to respectively process the inner spoiler movable groove and the outer spoiler movable groove on both sides of the cavity of the intake duct casting blank to form the intake duct component; The first clamping and loading assembly is disposed near the second clamping and loading station and is used to deliver the inner reinforcement into the cavity of the air intake component; The second clamping and loading assembly is arranged near the first clamping and loading station and is used to deliver the heating element into the cavity of the air inlet component; The third clamping and loading assembly is arranged near the third clamping and loading station, and is used to deliver the noise reduction and sound absorbing component pre-installed with the spoiler assembly into the cavity of the air intake component; The fourth clamping and loading assembly is arranged near the fourth clamping and loading station and is used to deliver the annular cover plate into the cavity of the air inlet member; The welding assembly is used to weld and fix the inner reinforcement, the heating element, the noise reduction and sound absorption element, and the annular cover plate in the cavity of the air intake member; The air inlet duct component, the inner reinforcement component, the heating component, the noise reduction and sound absorption component, the spoiler assembly, and the annular cover plate together constitute a combined air inlet fairing.

2. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 1 is characterized in that: The cross-section of the cavity in the air inlet duct component is a semi-elliptical structure that is narrow inside and wide outside. The inner and outer wall shapes of the inner reinforcement match the shapes of the two side walls of the cavity. After the inner reinforcement is installed, the distance between its rear end and the opening surface of the cavity is greater than the thickness of the annular cover plate.

3. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 2, characterized in that: The heating element is composed of an arc-shaped heating tube, an inner support block and a first connecting rod. The first connecting rods are respectively installed at both ends of the arc-shaped heating tube. The connection between the arc-shaped heating tube and the first connecting rod is covered with an inner support block. The shape of the inner support block matches the shape of the front end of the internal reinforcement.

4. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 3 is characterized in that: The spoiler assembly consists of a mechanical clamp, a spoiler and a second connecting rod. The mechanical clamp is provided with two spoilers that can be flipped or translated relative to each other. The two spoilers can extend outward through the inner spoiler movable groove and the outer spoiler movable groove respectively.

5. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 4 is characterized in that: The noise reduction and sound absorbing component has a honeycomb structure core, and the shape of the noise reduction and sound absorbing component matches the shape of the inner reinforcement after removing the corresponding area of ​​the inner support block; the noise reduction and sound absorbing component is provided with radial through holes for facilitating the installation of the spoiler assembly and axial through holes for facilitating the passage of the first and second connecting rods, and the annular cover plate is provided with exposure holes for facilitating the passage of the first and second connecting rods.

6. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 5, characterized in that: The air inlet duct positioning assembly includes a first substrate, a first rotary drive and an annular positioning block. The fixed outer ring of the first rotary drive is installed on the first substrate. An annular positioning block is installed on the upper side of the movable inner ring of the first rotary drive. The annular positioning block is provided with an annular positioning groove that cooperates with the lip of the air inlet duct casting blank.

7. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 6, characterized in that: The main structures of the internal cutting assembly and the external cutting assembly are the same; the internal cutting assembly includes a second base plate, a horizontal push rod, a cutting bracket, a cutting knife and a cutting motor. The cylinder body of the horizontal push rod is fixed on the second base plate, and the movable end of the horizontal push rod is installed with a cutting knife and a cutting motor for driving it to rotate through the cutting bracket.

8. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 7, characterized in that: The main structures of the first clamping and loading assembly, the second clamping and loading assembly, and the third clamping and loading assembly are the same; the first clamping and loading assembly includes a third base plate, a servo motor, a rotating plate, a first vertical push rod, and a clamper, the cylinder of the servo motor is fixed on the third base plate, the output end of the servo motor is installed with a rotating plate, the first vertical push rods are symmetrically installed on the upper sides of both ends of the rotating plate, the movable end of the first vertical push rod is installed with a clamper, and the clamper is a multi-claw mechanical clamp or a suction cup clamp; The fourth clamping and loading assembly includes a fourth base plate, a horizontal linear guide pair, a mounting plate, a second vertical push rod and an annular suction cup. The slide rail of the horizontal linear guide pair is fixed on the fourth base plate. The slider of the horizontal linear guide pair is installed with the second vertical push rod through the mounting plate. The movable end of the second vertical push rod is installed with an annular suction cup for adsorbing the annular cover plate.

9. The intelligent welding system for the engine nacelle combined air intake fairing according to claim 8, characterized in that: The welding assembly includes a fifth base plate, a third vertical push rod, a second rotary drive, a mounting seat, a rotary block, a laser welding head, a driving gear and an adjusting motor. The cylinder body of the third vertical push rod is fixed on the fifth base plate. The movable end of the third vertical push rod is installed with a mounting seat via the second rotary drive. The upper part of the mounting seat is embedded with an adjusting motor, and the output end of the adjusting motor is installed with a driving gear. The lower part of the mounting seat is movable limited by a rotary block. The bottom end of the rotary block is installed with a laser welding head. The upper end of the rotary block is provided with an arc surface, and the arc surface is evenly distributed with tooth grooves meshing with the driving gear.

10. An intelligent welding method for an engine nacelle combined air intake fairing, implemented based on the intelligent welding system for an engine nacelle combined air intake fairing according to claim 9, characterized in that: The steps include: S1. Use a crane to transfer the air intake casting blank to the air intake positioning assembly; S2. Using the inner cutting assembly and the outer cutting assembly to machine the inner spoiler movable grooves and the outer spoiler movable grooves on the intake duct positioning assembly. After each set of movable grooves is machined, the intake duct positioning assembly drives the intake duct casting blank to rotate a certain angle until all sets of movable grooves are machined, thereby obtaining the intake duct component. S3. Using the first clamping and loading assembly, the inner reinforcement is fed into the cavity of the air intake duct component. After each feeding operation, the air intake duct positioning assembly is used to rotate the air intake duct component by a certain angle. The inner reinforcement transferred to the welding station is welded to the inner wall of the cavity of the air intake duct component using the welding assembly. S4. Using the second clamping and loading assembly, the heating element is fed into the cavity of the air intake duct component. After each feeding operation, the air intake duct positioning assembly is used to rotate the heating element by a certain angle. The inner support block of the heating element transferred to the welding station is welded to the inner wall of the cavity of the air intake duct component and the inner reinforcement member using the welding assembly. S5. Use the third clamping and loading assembly to deliver the noise reduction and sound absorbing component equipped with the spoiler assembly into the cavity of the air intake component. After each delivery operation, use the air intake positioning assembly to rotate the air intake component by a certain angle. Use the welding assembly to weld the noise reduction and sound absorbing component, which has been transferred to the welding station, to the inner wall of the cavity of the air intake component and the inner reinforcement. S6. Use the fourth clamping and loading assembly to send the annular cover plate into the cavity of the air inlet duct component, use the air inlet duct positioning assembly to drive the annular cover plate to rotate, and use the welding assembly to weld and fix the annular cover plate to the inner wall of the cavity of the air inlet duct component to complete the welding and assembly operation of the combined air inlet fairing.

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