Intelligent welding system and method for engine nacelle combined inlet cowl

Abstract

The present application belongs to the technical field of engine nacelle component production, in particular to an intelligent welding system and method for a combined air inlet fairing of an engine nacelle. The intelligent welding system is designed rationally. Inner and outer cutting assemblies are used to process inner and outer spoiler movable grooves on an air inlet passage casting blank carried by an air inlet passage positioning assembly, so that the air inlet passage casting blank is formed into an air inlet passage component. First, second, third and fourth clamping and feeding assemblies are used to feed an inner reinforcing member, a heating member, a noise reduction and sound absorption member preassembled with a spoiler assembly and a ring cover into a cavity of the air inlet passage component. A welding assembly is used to weld and fix the fed components in the cavity of the air inlet passage component. In this way, intelligent welding and assembly operation of the combined air inlet fairing can be realized. The combined air inlet fairing has the advantages of high structural strength, good noise reduction and sound absorption effect, automatic ice removal of the lip and control of air inlet distortion.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of engine nacelle component production, and particularly relates to an intelligent welding system and method for an engine nacelle combined air inlet fairing. BACKGROUND

[0002] The air inlet fairing in the engine nacelle has multiple key roles, and the following is a detailed elaboration of its main functions: first, the main function of the air inlet fairing is to adjust and optimize airflow. During the flight of an aircraft, the engine needs to inhale a large amount of air to maintain its normal operation. The air inlet fairing, through its special design, can force the airflow to flow in a specific direction, usually moving backwards, thereby ensuring that the engine obtains stable and efficient airflow supply. This optimized airflow not only improves the thrust efficiency of the engine, but also reduces flight resistance, thereby improving the overall performance of the aircraft. Secondly, the air inlet fairing also plays a role in protecting the engine. During flight, the aircraft may encounter various external objects, such as birds, hail, etc. If these external objects directly hit the engine, they may cause serious damage to the engine. The presence of the air inlet fairing acts as a barrier, blocking these external objects from directly contacting the key components of the engine. Even if the external objects hit the fairing, due to its special design and material selection, the external objects can be bounced to the outside trajectory in a beautiful arc, thereby maximizing the protection of the engine from damage. In addition, the air inlet fairing also helps to reduce noise. During engine operation, a large amount of noise is generated. The air inlet fairing, through its streamlined design and optimized airflow channel, can effectively reduce the transmission and reflection of noise, thereby reducing the noise level of the aircraft during flight and improving passenger comfort.

[0003] The traditional air inlet fairing in the engine nacelle has low structural strength, weak noise reduction and sound absorption effect, cannot realize automatic deicing of the lip, and does not have a spoiler for realizing air inlet distortion control. Therefore, the present application innovatively designs a combined air inlet fairing suitable for the engine nacelle.

[0004] The existing welding system has deficiencies when in use, first, it cannot meet the automatic assembly welding needs of the components in the combined air inlet fairing; second, the inside of the lip of the combined air inlet fairing welded and assembled by it does not have a heating element, and thus cannot realize automatic deicing of the lip; third, the combined air inlet fairing welded and assembled by it does not have a spoiler, and cannot realize air inlet distortion control in a low-speed state. Therefore, the existing welding system needs to be optimized and improved. SUMMARY

[0005] The present application aims to overcome at least one of the above problems in the prior art, and provides an intelligent welding system and method for an engine nacelle combined air inlet fairing.

[0006] To achieve the above technical purposes and effects, the present application is implemented by the following technical solutions:

[0007] The intelligent welding system of the combined engine nacelle air inlet fairing comprises a controller and an air inlet channel positioning assembly, an inner cutting assembly, an outer cutting assembly, a first clamping and feeding assembly, a second clamping and feeding assembly, a third clamping and feeding assembly, a fourth clamping and feeding assembly, and a welding assembly connected to the controller.

[0008] The air inlet channel positioning assembly is used to position and place the air inlet channel casting blank.

[0009] 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 and outer spoiler movable grooves on both sides of the cavity of the air inlet channel casting blank, so that the air inlet channel component is formed.

[0010] The first clamping and feeding assembly is arranged near the second clamping and feeding station, and is used to send the inner reinforcing member into the cavity of the air inlet channel component.

[0011] The second clamping and feeding assembly is arranged near the first clamping and feeding station, and is used to send the heating member into the cavity of the air inlet channel component.

[0012] The third clamping and feeding assembly is arranged near the third clamping and feeding station, and is used to send the noise reduction and sound absorption member pre-assembled with the spoiler assembly into the cavity of the air inlet channel component.

[0013] The fourth clamping and feeding assembly is arranged near the fourth clamping and feeding station, and is used to send the annular cover plate into the cavity of the air inlet channel component.

[0014] The welding assembly is used to weld and fix the inner reinforcing member, the heating member, the noise reduction and sound absorption member, and the annular cover plate in the cavity of the air inlet channel component.

[0015] The air inlet channel component, the inner reinforcing member, the heating member, the noise reduction and sound absorption member, the spoiler assembly, and the annular cover plate jointly constitute the combined air inlet fairing.

[0016] Further, in the intelligent welding system of the combined engine nacelle air inlet fairing, the cross section of the cavity in the air inlet channel component is a semi-elliptical structure with a narrow inner part and a wide outer part.

[0017] Further, in the intelligent welding system of the engine nacelle combined air inlet fairing, the heating member is composed of an arc-shaped heating pipe, an inner support block and a first connecting rod, two ends of the arc-shaped heating pipe are respectively provided with the first connecting rod, the arc-shaped heating pipe and the first connecting rod are covered with the inner support block, and the shape of the inner support block is matched with the shape of the front end of the inner reinforcing member.

[0018] Further, in the intelligent welding system of the engine nacelle combined air inlet fairing, the spoiler assembly is composed of a mechanical clamp jaw, a spoiler and a second connecting rod, the mechanical clamp jaw is provided with two spoilers capable of being reversely turned or translated, and the two spoilers are capable of being outwardly extended through inner and outer spoiler movable slots.

[0019] Further, in the intelligent welding system of the engine nacelle combined air inlet fairing, the noise reduction sound absorption member is a honeycomb structure core, the shape of the noise reduction sound absorption member is matched with the shape of the inner reinforcing member after the corresponding area of the inner support block is removed, radial perforations for installing the spoiler assembly and axial perforations for the first and second connecting rods are arranged in the noise reduction sound absorption member, and the ring-shaped cover plate is provided with exposed holes for the first and second connecting rods.

[0020] Further, in the intelligent welding system of the engine nacelle combined air inlet fairing, the air inlet positioning assembly includes a first base plate, a first rotary driver and a ring-shaped positioning block, the outer ring of the first rotary driver is mounted on the first base plate, the ring-shaped positioning block is mounted on the upper side of the movable inner ring of the first rotary driver, and the ring-shaped positioning block is provided with a ring-shaped positioning groove matched with the lip of the air inlet casting blank.

[0021] Further, in the intelligent welding system of the engine nacelle combined air inlet fairing, the main body structures of the inner and outer cutting assemblies are the same, the inner cutting assembly includes a second base plate, a horizontal push rod, a cutting support, a cutting knife and a cutting motor, the cylinder body of the horizontal push rod is fixed on the second base plate, the movable end of the horizontal push rod is provided with the cutting knife and the cutting motor for driving the rotation of the cutting knife through the cutting support.

[0022] Further, in the intelligent welding system of the engine nacelle combined air inlet fairing, the main body structures of the first, second and third clamping and feeding assemblies are the same, the first clamping and feeding assembly includes a third base plate, a servo motor, a rotating plate, a first vertical push rod and a clamp, the cylinder body of the servo motor is fixed on the third base plate, the output end of the servo motor is provided with the rotating plate, the upper sides of the two ends of the rotating plate are symmetrically provided with the first vertical push rod, the movable end of the first vertical push rod is provided with the clamp, and the clamp is a multi-claw mechanical clamp or a suction cup clamp.

[0023] The fourth clamping and feeding assembly comprises a fourth base plate, a horizontal linear guide pair, a mounting plate, a second vertical push rod and a ring-shaped suction disc, the slide rail of the horizontal linear guide pair is fixed on the fourth base plate, the slide block of the horizontal linear guide pair is provided with the second vertical push rod through the mounting plate, and the movable end of the second vertical push rod is provided with the ring-shaped suction disc.

[0024] Further, in the intelligent welding system of the engine nacelle combined air inlet fairing, the welding assembly comprises a fifth base plate, a third vertical push rod, a second rotary driver, a mounting seat, a rotating 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 provided with the mounting seat through the second rotary driver, the upper part of the mounting seat is embedded and fixed with the adjusting motor, the output end of the adjusting motor is provided with the driving gear, the lower part of the mounting seat is movably limited by the rotating block, the bottom end of the rotating block is provided with the laser welding head, and the upper end of the rotating block is provided with a circular arc surface, and the circular arc surface is uniformly provided with tooth grooves meshing with the driving gear.

[0025] The application further provides an intelligent welding method of an engine nacelle combined air inlet fairing, which is realized based on the intelligent welding system of the engine nacelle combined air inlet fairing and comprises the following steps.

[0026] S1, the air inlet channel casting blank is transferred to the air inlet channel positioning assembly by the travelling crane;

[0027] S2, the inner spoiler movable slot and the outer spoiler movable slot are processed on the air inlet channel positioning assembly by the inner cutting assembly and the outer cutting assembly, the air inlet channel positioning assembly drives the air inlet channel casting blank to rotate by a certain angle after each group of movable slots is processed, until all groups of movable slots are processed, and the air inlet channel component is obtained;

[0028] S3, the inner reinforcing part is sent into the cavity of the air inlet channel component by the first clamping and feeding assembly, the air inlet channel component is driven to rotate by a certain angle by the air inlet channel positioning assembly after each sending operation is completed, and the inner reinforcing part transferred to the welding station is welded and fixed to the inner wall of the cavity of the air inlet channel component by the welding assembly;

[0029] S4, the heating part is sent into the cavity of the air inlet channel component by the second clamping and feeding assembly, the heating part is driven to rotate by a certain angle by the air inlet channel positioning assembly after each sending operation is completed, and the inner supporting block of the heating part transferred to the welding station is welded and fixed to the inner wall of the cavity of the air inlet channel component and the inner reinforcing part by the welding assembly;

[0030] S5, the third clamping feeding assembly is used for sending the noise reduction sound absorption piece provided with the spoiler assembly into the cavity of the air inlet channel component, after each sending operation, the air inlet channel positioning assembly is used to drive the air inlet channel component to rotate by a certain angle, and the welding assembly is used to weld and fix the noise reduction sound absorption piece transferred to the welding station with the inner wall of the cavity of the air inlet channel component and the inner reinforcing part;

[0031] S6, the fourth clamping feeding assembly is used for sending the annular cover plate into the cavity of the air inlet channel component, the air inlet channel positioning assembly is used to drive the annular cover plate to rotate, and the welding assembly is used to weld and fix the annular cover plate with the inner wall of the cavity of the air inlet channel component, so that the welding and assembly operation of the combined air inlet fairing is completed.

[0032] The beneficial effects of the present application are:

[0033] 1, the present application provides a kind of intelligent welding system of engine nacelle combined air inlet fairing, it is mainly by controller, air inlet channel positioning assembly, inner cutting assembly, outer cutting assembly, first clamping feeding assembly, second clamping feeding assembly, third clamping feeding assembly, fourth clamping feeding assembly and welding assembly constitute, inner cutting assembly and outer cutting assembly are used to process inner spoiler movable slot, outer spoiler movable slot on air inlet channel positioning assembly bearing air inlet channel casting blank respectively, so that it is shaped into air inlet channel component;First clamping feeding assembly, second clamping feeding assembly, third clamping feeding assembly, fourth clamping feeding assembly are used to send inner reinforcing part, heating piece, preloaded noise reduction sound absorption piece with spoiler assembly, annular cover plate into the cavity of air inlet channel component, and welding assembly is used to weld and fix the component sent in the cavity of air inlet channel component;By this way, the intelligent welding and assembly operation of combined air inlet fairing can be realized.

[0034] 2, the combined air inlet fairing welded and assembled in the present application has reasonable structure design, which is mainly composed of air inlet channel component, inner reinforcing part, heating piece, noise reduction sound absorption piece, spoiler assembly and annular cover plate;The inner reinforcing part is used to improve the structural strength of the air inlet channel component;The heating piece is used to realize automatic deicing of the lip;The noise reduction sound absorption piece is used to improve the overall noise reduction and sound absorption effect;The spoiler assembly is used to reduce the distortion of the air inlet channel at low speed, and does not have obvious adverse effects on the nacelle at high speed. The thin spoiler of the spoiler assembly can reduce the tendency of flow separation by vortex when opened, thereby improving the uniformity of the air inlet channel outlet flow field. When retracted, the thin spoiler does not affect the original performance of the nacelle.

[0035] Of course, any product implementing the present application does not necessarily need to achieve all the advantages above. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0037] Figure 1 The composition block diagram of the intelligent welding system of the present application;

[0038] Figure 2 The structural schematic diagram of the combined air inlet fairing in the present application;

[0039] Figure 3 The structural exploded schematic diagram of the combined air inlet fairing in the present application;

[0040] Figure 4 The schematic diagram of the combined air inlet fairing in the present application after omitting the air inlet channel component;

[0041] Figure 5 The structural schematic diagram of the air inlet channel component in the present application;

[0042] Figure 6 The half-section schematic diagram of the air inlet channel component in the present application;

[0043] Figure 7 The structural schematic diagram of the air inlet channel casting blank in the present application;

[0044] Figure 8 The structural schematic diagram of the internal reinforcing member in the present application;

[0045] Figure 9 The structural schematic diagram of the heating member in the present application;

[0046] Figure 10 The position schematic diagram of the spoiler blade in the spoiler blade assembly in the present application when the spoiler blade is stored;

[0047] Figure 11 The position schematic diagram of the spoiler blade in the spoiler blade assembly in the present application when the spoiler blade is extended;

[0048] Figure 12 The structural schematic diagram of the spoiler blade in the spoiler blade assembly in the present application when the spoiler blade is stored;

[0049] Figure 13 The structural schematic diagram of the spoiler blade in the spoiler blade assembly in the present application when the spoiler blade is extended;

[0050] Figure 14 The structural schematic diagram of the air inlet channel positioning assembly in the present application;

[0051] Figure 15It is the structural schematic view of the inner cutting assembly in the application;

[0052] Figure 16 It is the structural schematic view of the first clamping and feeding assembly in the application;

[0053] Figure 17 It is the structural schematic view of the fourth clamping and feeding assembly in the application;

[0054] Figure 18 It is the structural schematic view of the welding assembly in the application;

[0055] In the drawings, the components represented by each number are as follows:

[0056] 1-controller;

[0057] 2-air inlet positioning assembly, 201-first base plate, 202-first rotary driver, 203-annular positioning block;

[0058] 3-inner cutting assembly, 301-second base plate, 302-horizontal push rod, 303-cutting support, 304-cutting knife, 305-cutting motor;

[0059] 4-outer cutting assembly;

[0060] 5-first clamping and feeding assembly, 501-third base plate, 502-servo motor, 503-rotating plate, 504-first vertical push rod, 505-clamper;

[0061] 6-second clamping and feeding assembly;

[0062] 7-third clamping and feeding assembly;

[0063] 8-fourth clamping and feeding assembly, 801-fourth base plate, 802-horizontal linear guide pair, 803-mounting plate, 804-second vertical push rod, 805-annular suction disc;

[0064] 9-welding assembly, 901-fifth base plate, 902-third vertical push rod, 903-second rotary driver, 904-mounting seat, 905-rotating block, 906-laser welding head, 907-gear slot, 908-driving gear;

[0065] 10-combined air inlet fairing;

[0066] 11-air inlet member, 111-air inlet casting blank, 112-cavity, 113-inner spoiler movable slot, 114-outer spoiler movable slot;

[0067] 12-inner reinforcing member;

[0068] 13-heating member, 131-arc-shaped heating pipe, 132-inner support block, 133-first wiring rod;

[0069] 14-Noise-reducing and sound-absorbing components;

[0070] 15-Breakout assembly, 151-Mechanical gripper, 152-Breakout, 153-Second connecting rod;

[0071] 16- Annular cover plate. Detailed Implementation

[0072] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0073] like Figures 1-7 As shown, this embodiment provides an intelligent welding system for an engine nacelle combined air intake fairing, including a controller 1 and connected to it an air intake positioning component 2, an inner cutting component 3, an outer cutting component 4, a first clamping and feeding component 5, a second clamping and feeding component 6, a third clamping and feeding component 7, a fourth clamping and feeding component 8, and a welding component 9. The intake manifold positioning assembly 2 is used to position the intake manifold casting blank 111. The intake manifold positioning assembly 2 is sequentially arranged circumferentially 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. The inner cutting assembly 3 and the outer cutting assembly 4 are respectively located near the inner and outer sides of the cutting station, and are used to process the inner spoiler movable groove 113 and the outer spoiler movable groove 114 on both sides of the cavity 112 of the intake manifold casting blank 111, forming it into the intake manifold component 11. The first clamping and loading assembly 5 is located near the second clamping and loading station, and is used to feed the inner reinforcing member 12 into the cavity 112 of the intake manifold component 11. The second clamping and loading assembly 6 is located near the first clamping and loading station. The first part is a heating element 13, which is used to feed the heating element 13 into the cavity 112 of the intake duct component 11; the second part is a clamping and feeding assembly 7, which is located near the third clamping and feeding station, and is used to feed the noise reduction and sound absorption element 14 pre-loaded with the spoiler assembly 15 into the cavity 112 of the intake duct component 11; the third part is a clamping and feeding assembly 8, which is located near the fourth clamping and feeding station, and is used to feed the annular cover plate 16 into the cavity 112 of the intake duct component 11; the fourth part is a clamping and feeding assembly 8, which is located near the fourth clamping and feeding station, and is used to feed the annular cover plate 16 into the cavity 112 of the intake duct component 11; the fifth part is a welding assembly 9, which is used to weld and fix the inner reinforcing element 12, the heating element 13, the noise reduction and sound absorption element 14, the spoiler assembly 15, and the annular cover plate 16 into the cavity 112 of the intake duct component 11; the intake duct component 11, the inner reinforcing element 12, the heating element 13, the noise reduction and sound absorption element 14, the spoiler assembly 15, and the annular cover plate 16 together constitute the combined intake hood 10.

[0074] In this embodiment, the cross section of the hollow cavity 112 in the air inlet channel component 11 is in the shape of a semi-elliptical structure with a narrow inner part and a wide outer part. As shown in Figure 8 The inner and outer walls of the inner reinforcing member 12 are shaped to match the two side walls of the hollow cavity 112, and the distance between the rear end of the inner reinforcing member 12 and the opening surface of the hollow cavity 112 is greater than the thickness of the annular cover plate 16 after installation.

[0075] As shown in Figure 9 The heating member 13 is composed of an arc-shaped heating pipe 131, an inner support block 132, and a first wiring rod 133. The two ends of the arc-shaped heating pipe 131 are respectively provided with a first wiring rod 133. The connection between the arc-shaped heating pipe 131 and the first wiring rod 133 is covered with an inner support block 132. The shape of the inner support block 132 matches the shape of the front end of the inner reinforcing member 12.

[0076] As shown in Figures 10-13 The spoiler assembly 15 is composed of a mechanical clamp jaw 151, a spoiler 152, and a second wiring rod 153. The mechanical clamp jaw 151 is provided with two spoilers 152 that can be flipped or translated relative to each other. The two spoilers 152 can respectively extend outward through the inner spoiler movable slot 113 and the outer spoiler movable slot 114.

[0077] In this embodiment, the noise reduction and sound absorption member 14 is a honeycomb structure core (not simplified in the drawing, and the honeycomb micro-pore structure is not shown). The shape of the noise reduction and sound absorption member 14 matches the shape of the inner reinforcing member 12 after the corresponding area of the inner support block 132 is removed. Radial perforations for installing the spoiler assembly 15 and axial perforations for the first wiring rod 133 and the second wiring rod 153 are provided in the noise reduction and sound absorption member 14. Exposed holes for the first wiring rod 133 and the second wiring rod 153 to pass through are provided on the annular cover plate 16.

[0078] As shown in Figure 14 The air inlet channel positioning assembly 2 includes a first base plate 201, a first rotary driver 202, and an annular positioning block 203. The outer ring of the first rotary driver 202 is installed on the first base plate 201. The annular positioning block 203 is installed on the upper side of the movable inner ring of the first rotary driver 202. An annular positioning groove is provided in the annular positioning block 203 to match the lip of the air inlet channel casting blank 111.

[0079] The working principle of the air inlet channel positioning assembly 2 is to use the annular positioning groove of the annular positioning block 203 to position and place the air inlet channel casting blank 111. In order to prevent subsequent relative displacement, anti-slip rubber pads can be additionally provided on the inner wall of the annular positioning groove.

[0080] As shown in Figure 15As shown, the inner cutting assembly 3 comprises a second base plate 301, a horizontal push rod 302, a cutting support 303, a cutting knife 304 and a cutting motor 305, the cylinder body of the horizontal push rod 302 is fixed on the second base plate 301, and the movable end of the horizontal push rod 302 is provided with the cutting knife 304 and the cutting motor 305 for driving the cutting knife 304 to rotate through the cutting support 303. The main body structure of the inner cutting assembly 3 and the outer cutting assembly 4 is the same.

[0081] The working principle of the inner cutting assembly 3 is that the horizontal push rod 302 drives the cutting knife 304 to move horizontally, and the cutting motor 305 drives the cutting knife 304 to rotate, so as to realize cutting.

[0082] As shown, Figure 16 The first clamping and feeding assembly 5 comprises a third base plate 501, a servo motor 502, a rotating plate 503, a first vertical push rod 504 and a clamp 505, the cylinder body of the servo motor 502 is fixed on the third base plate 501, the output end of the servo motor 502 is provided with the rotating plate 503, the two ends of the rotating plate 503 are symmetrically provided with the first vertical push rod 504 on the upper side, and the movable end of the first vertical push rod 504 is provided with the clamp 505, and the clamp 505 is a multi-jaw mechanical clamp or a suction cup clamp; the main body structure of the first clamping and feeding assembly 5, the second clamping and feeding assembly 6 and the third clamping and feeding assembly 7 is the same.

[0083] The working principle of the first clamping and feeding assembly 5 is that the two sides of the rotating plate are respectively used as a feeding end and a replenishing end, the clamp 505 at the feeding end and the replenishing end can be switched in position by the servo motor 502, the clamp 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.

[0084] As shown, Figure 17 The fourth clamping and feeding assembly 8 comprises a fourth base plate 801, a horizontal linear guide rail pair 802, a mounting plate 803, a second vertical push rod 804 and a ring-shaped suction cup 805, the slide rail of the horizontal linear guide rail pair 802 is fixed on the fourth base plate 801, the slide block of the horizontal linear guide rail pair 802 is provided with the second vertical push rod 804 through the mounting plate 803, and the movable end of the second vertical push rod 804 is provided with the ring-shaped suction cup 805 for adsorbing the ring-shaped cover plate 16.

[0085] The working principle of the fourth clamping and feeding assembly 8 is that the horizontal linear guide rail pair 802 drives the ring-shaped suction cup 805 and the ring-shaped suction cup 805 adsorbed thereby to move to the upper side of the cavity 112, and the second vertical push rod 804 pushes the ring-shaped suction cup 805 into the set position of the cavity 112.

[0086] As shown, Figure 18As shown, the welding assembly 9 comprises 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, the movable end of the third vertical push rod 902 is provided with the mounting seat 904 through the second rotary driver 903, the upper part of the mounting seat 904 is embeddedly fixed with the adjusting motor, the output end of the adjusting motor is provided with the driving gear 908, the lower part of the mounting seat 904 is movably limited by the rotating block 905, the bottom end of the rotating block 905 is provided with the laser welding head 906, and the upper end of the rotating block 905 is provided with a circular arc surface which is uniformly provided with tooth grooves 907 meshing with the driving gear 908.

[0087] The working principle of the welding assembly 9 is as follows: the third vertical push rod 902 is used to adjust the height position of the laser welding head 906, the second rotary driver 903 is used to adjust the horizontal circumferential position of the laser welding head 906, and the adjusting motor is used to drive the driving gear 908 to rotate forward or reversely, so as to adjust the inclination angle of the laser welding head 906 relative to the vertical plane.

[0088] The embodiment also provides an intelligent welding method for the engine nacelle combined air inlet fairing, and comprises the following steps:

[0089] S1, the air inlet channel casting blank 111 is transferred to the air inlet channel positioning assembly 2 by using the line crane.

[0090] S2, the inner spoiler movable slot 113 and the outer spoiler movable slot 114 are machined on the air inlet channel positioning assembly 2 by using the inner cutting assembly 3 and the outer cutting assembly 4, the air inlet channel positioning assembly 2 drives the air inlet channel casting blank 111 to rotate by a certain angle after machining of each group of movable slots is completed, until the machining operation of all groups of movable slots is completed, and the air inlet channel component 11 is obtained.

[0091] S3, the inner reinforcing part 12 is sent into the cavity 112 of the air inlet channel component 11 by using the first clamping and feeding assembly 5, the air inlet channel component 11 is driven to rotate by a certain angle by using the air inlet channel positioning assembly 2 after each sending operation is completed, and the inner reinforcing part 12 transferred to the welding station is welded and fixed with the inner wall of the cavity 112 of the air inlet channel component 11 by using the welding assembly 9. The inner and outer walls of the inner reinforcing part 12 can be pre-coated with adhesive, so that the position is not deviated before welding.

[0092] S4, the second clamping feeding assembly 6 is used to send the heating element 13 into the cavity 112 of the air inlet channel component 11. After each feeding operation, the air inlet channel positioning assembly 2 drives the heating element 13 to rotate by a certain angle, and the welding assembly 9 is used to weld and fix the inner support block 132 of the heating element 13 transferred to the welding station to the inner wall of the cavity 112 of the air inlet channel component 11 and the inner reinforcing element 12. The outer surface of the inner support block 132 of the heating element 13 can be pre-coated with adhesive to facilitate the position to remain unchanged before welding.

[0093] S5, the third clamping feeding assembly 7 is used to send the noise reduction sound absorption element 14 provided with the spoiler assembly 15 into the cavity 112 of the air inlet channel component 11. After each feeding operation, the air inlet channel positioning assembly 2 drives the air inlet channel component 11 to rotate by a certain angle, and the welding assembly 9 is used to weld and fix the noise reduction sound absorption element 14 transferred to the welding station to the inner wall of the cavity 112 of the air inlet channel component 11 and the inner reinforcing element 12. During installation, attention should be paid to make the first wiring rod 133 of the heating element 13 pass through the axial perforation of the noise reduction sound absorption element 14. Before welding, the mobile power supply is used to supply power to the mechanical clamping jaw 151 of the spoiler assembly 15 to test whether the two spoilers 152 can respectively extend outward through the inner spoiler movable slot 113 and the outer spoiler movable slot 114.

[0094] S6, the fourth clamping feeding assembly 8 is used to send the annular cover plate 16 into the cavity 112 of the air inlet channel component 11. The air inlet channel positioning assembly 2 drives the annular cover plate 16 to rotate, and the welding assembly 9 is used to weld and fix the annular cover plate 16 to the inner wall of the cavity 112 of the air inlet channel component 11, thereby completing the welding and assembly operation of the combined air inlet fairing. During installation, attention should be paid to make the first wiring rod 133 of the heating element 13 and the second wiring rod 153 of the spoiler assembly 15 pass through the exposed hole of the annular cover plate 16. The air inlet channel component 11, the inner reinforcing element 12, the heating element 13, the noise reduction sound absorption element 14, the spoiler assembly 15, and the annular cover plate 16 jointly constitute the combined air inlet fairing 10. The inner surface of the annular cover plate 16 can be pre-coated with adhesive to facilitate the position to remain unchanged before welding.

[0095] The specific application of the embodiment is that the intelligent welding system is mainly composed of a controller 1, an air inlet channel positioning assembly 2, an inner cutting assembly 3, an outer cutting assembly 4, a first clamping and feeding assembly 5, a second clamping and feeding assembly 6, a third clamping and feeding assembly 7, a fourth clamping and feeding assembly 8 and a welding assembly 9. The inner cutting assembly 3 and the outer cutting assembly 4 are used to process the inner spoiler movable slot 113 and the outer spoiler movable slot 114 on the air inlet channel casting embryo 111 carried by the air inlet channel positioning assembly 2, so that the air inlet channel component 11 is formed. The first clamping and feeding assembly 5, the second clamping and feeding assembly 6, the third clamping and feeding assembly 7 and the fourth clamping and feeding assembly 8 are used to send the inner reinforcing part 12, the heating part 13, the noise reduction and sound absorption part 14 preloaded with the spoiler assembly 15 and the annular cover plate 16 into the cavity 112 of the air inlet channel component 11. The welding assembly 9 is used to weld and fix the sent parts in the cavity 112 of the air inlet channel component 11. In this way, the intelligent welding and assembly operation of the combined air inlet fairing 10 can be realized.

[0096] The combined air inlet fairing 10 is mainly composed of an air inlet channel component 11, an inner reinforcing part 12, a heating part 13, a noise reduction and sound absorption part 14, a spoiler assembly 15 and an annular cover plate 16. The inner reinforcing part 12 is used to improve the structural strength of the air inlet channel component 11. The heating part 13 is used to realize automatic deicing of the lip. The noise reduction and sound absorption part 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 inlet channel at low speed, and does not have obvious adverse effects on the nacelle at high speed. The thin spoiler of the spoiler assembly 15 can reduce the tendency of flow separation by vortex when opened, thereby improving the uniformity of the air inlet channel outlet flow field. When retracted, the thin spoiler does not affect the original performance of the nacelle.

[0097] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the specification. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and use the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. An intelligent welding system for engine nacelle combined inlet cowl, characterized in that, The controller is connected with an air inlet channel positioning assembly, an inner cutting assembly, an outer cutting assembly, a first clamping feeding assembly, a second clamping feeding assembly, a third clamping feeding assembly, a fourth clamping feeding assembly and a welding assembly. The air inlet channel positioning assembly is used for positioning and placing the air inlet channel casting blank, and sequentially comprises a cutting station, a first clamping feeding station, a second clamping feeding station, a third clamping feeding station, a fourth clamping feeding station and a welding station in sequence along the circumference. The inner cutting assembly and the outer cutting assembly are respectively arranged close to the inner side and the outer side of the cutting station, and are used for respectively machining the inner spoiler vane movable slot and the outer spoiler vane movable slot on both sides of the cavity of the air inlet channel casting blank, so that the air inlet channel component is formed. The first clamping feeding assembly is arranged close to the second clamping feeding station, and is used for feeding the inner reinforcing member into the cavity of the air inlet channel component. The second clamping feeding assembly is arranged close to the first clamping feeding station, and is used for feeding the heating member into the cavity of the air inlet channel component. The third clamping feeding assembly is arranged close to the third clamping feeding station, and is used for feeding the noise reduction sound absorption member pre-assembled with the spoiler vane assembly into the cavity of the air inlet channel component. The fourth clamping feeding assembly is arranged close to the fourth clamping feeding station, and is used for feeding the annular cover plate into the cavity of the air inlet channel component. The welding assembly is used for welding and fixing the inner reinforcing member, the heating member, the noise reduction sound absorption member and the annular cover plate in the cavity of the air inlet channel component. The air inlet channel component, the inner reinforcing member, the heating member, the noise reduction sound absorption member, the spoiler vane assembly and the annular cover plate jointly constitute a combined air inlet fairing. The cross section of the cavity in the air inlet channel component is a half-elliptical structure with a narrow inner part and a wide outer part. The inner and outer walls of the inner reinforcing member are matched with the two side walls of the cavity. The distance between the rear end of the inner reinforcing member and the opening surface of the cavity is greater than the thickness of the annular cover plate. The heating member is composed of an arc-shaped heating pipe, an inner support block and a first wiring rod. The two ends of the arc-shaped heating pipe are respectively provided with the first wiring rod. The arc-shaped heating pipe and the first wiring rod are covered with the inner support block. The shape of the inner support block is matched with the shape of the front end of the inner reinforcing member.

2. The intelligent welding system for engine nacelle combined inlet cowl as claimed in claim 1, wherein, The spoiler vane assembly is composed of a mechanical clamp jaw, a spoiler vane and a second wiring rod. The mechanical clamp jaw is provided with two spoiler vanes capable of being flipped or translated relative to each other. The two spoiler vanes can respectively extend outward through the inner spoiler vane movable slot and the outer spoiler vane movable slot.

3. The intelligent welding system for engine nacelle combined inlet cowl as claimed in claim 2, wherein, The noise reduction sound absorption member is a honeycomb structure core. The shape of the noise reduction sound absorption member is matched with the shape of the inner reinforcing member after removing the corresponding area of the inner support block. The noise reduction sound absorption member is provided with radial perforations for facilitating the installation of the spoiler vane assembly and axial perforations for facilitating the passing of the first wiring rod and the second wiring rod. The annular cover plate is provided with exposure holes for facilitating the passing of the first wiring rod and the second wiring rod.

4. The intelligent welding system for engine nacelle combined inlet cowl as claimed in claim 3, wherein, The air inlet channel positioning assembly comprises a first base plate, a first rotary driver and an annular positioning block. The outer ring of the first rotary driver is mounted on the first base plate. The annular positioning block is mounted on the upper side of the movable inner ring of the first rotary driver. The annular positioning block is provided with an annular positioning groove matched with the lip of the air inlet channel casting blank.

5. The intelligent welding system for engine nacelle combined inlet cowl as claimed in claim 4, wherein, The main body structure of the inner cutting assembly and the outer cutting assembly is same; the inner cutting assembly comprises a second base plate, a horizontal push rod, a cutting support, a cutting knife and a cutting motor, the cylinder body of the horizontal push rod is fixed on the second base plate, the movable end of the horizontal push rod is provided with the cutting knife and the cutting motor for driving the cutting knife to rotate through the cutting support.

6. The intelligent welding system for engine nacelle combined inlet cowl as claimed in claim 5, wherein, The main body structure of the first clamping and feeding assembly, the second clamping and feeding assembly and the third clamping and feeding assembly is same; the first clamping and feeding assembly comprises a third base plate, a servo motor, a rotating plate, a first vertical push rod and a clamp, the cylinder body of the servo motor is fixed on the third base plate, the output end of the servo motor is provided with the rotating plate, the two ends of the rotating plate are symmetrically provided with the first vertical push rod on the upper side, the movable end of the first vertical push rod is provided with the clamp, and the clamp is a multi-claw mechanical clamp or a suction cup clamp. The fourth clamping and feeding assembly comprises a fourth base plate, a horizontal linear guide rail pair, a mounting plate, a second vertical push rod and a ring-shaped suction cup, the slide rail of the horizontal linear guide rail pair is fixed on the fourth base plate, the slide block of the horizontal linear guide rail pair is provided with the second vertical push rod through the mounting plate, and the movable end of the second vertical push rod is provided with the ring-shaped suction cup for adsorbing the ring-shaped cover plate.

7. The intelligent welding system for engine nacelle combined inlet cowl as claimed in claim 6, wherein, The welding assembly comprises a fifth base plate, a third vertical push rod, a second rotary driver, a mounting seat, a rotating 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 provided with the mounting seat through the second rotary driver, the upper part of the mounting seat is embedded and fixed with the adjusting motor, the output end of the adjusting motor is provided with the driving gear, the lower part of the mounting seat is movably limited by the rotating block, the bottom end of the rotating block is provided with the laser welding head, and the upper end of the rotating block is provided with a circular arc surface which is uniformly provided with tooth grooves meshing with the driving gear.

8. The intelligent welding method of the engine nacelle combined inlet cowl, based on the intelligent welding system of the engine nacelle combined inlet cowl as claimed in claim 7, is characterized in that, The method comprises the following steps: S1, transferring the air inlet casting blank to the air inlet positioning assembly by using the row crane; S2, processing the inner spoiler movable slot and the outer spoiler movable slot on the air inlet positioning assembly by using the inner cutting assembly and the outer cutting assembly, rotating the air inlet positioning assembly to rotate the air inlet casting blank by a certain angle after completing the processing of each group of movable slots, and completing all the processing of movable slots to obtain an air inlet component; S3, feeding the inner reinforcing member into the cavity of the air inlet component by using the first clamping and feeding assembly, rotating the air inlet component by a certain angle after completing the feeding operation once, and welding and fixing the inner reinforcing member transferred to the welding station and the inner wall of the cavity of the air inlet component by using the welding assembly; S4, feeding the heating member into the cavity of the air inlet component by using the second clamping and feeding assembly, rotating the heating member by a certain angle after completing the feeding operation once, and welding and fixing the inner supporting block of the heating member transferred to the welding station, the inner wall of the cavity of the air inlet component and the inner reinforcing member by using the welding assembly. S5, using the third clamping feeding assembly to send the noise reduction sound absorption piece with spoiler assembly into the cavity of the air inlet channel component, and after each feeding operation, the air inlet channel positioning assembly drives the air inlet channel component to rotate by a certain angle, and the welding assembly is used for welding and fixing the noise reduction sound absorption piece transferred to the welding station and the inner wall and inner reinforcing part of the cavity of the air inlet channel component; S6, using the fourth clamping feeding assembly to send the ring-shaped cover plate into the cavity of the air inlet channel component, using the air inlet channel positioning assembly to drive the ring-shaped cover plate to rotate, and using the welding assembly to weld and fix the ring-shaped cover plate and the inner wall of the cavity of the air inlet channel component, to complete the welding and assembly operation of the combined air inlet fairing.

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