A welding processing system and method for assembling a combined aviation aluminum shell

Abstract

The present invention belongs to the technical field of aviation parts production, and specifically relates to a welding processing system and method for assembling a modular aviation aluminum shell. The present invention uses a clamping assembly to clamp the modular aviation aluminum shell; uses an inner support plate bending assembly and an inner support plate stamping forming assembly to perform punching processing on the upper and lower sides of a joint, and forms an inwardly folded convex plate during the punching forming process, and uses the inner support plate bending assembly to bend the convex plate to form an inner support plate; uses a joint welding assembly to simultaneously perform welding processing on the inner and outer sides of the joint; uses an inner support plate punching assembly to form a mounting hole on the inner support plate that is convenient for installing a threading plate through bolts. In this way, the main components of the modular aviation aluminum shell can be reliably clamped, and reliable anti-deformation support can be provided during the hole opening and welding process; both sides of the weld are heated evenly, and the internal stress is relatively balanced, thereby reducing deformation and improving the overall quality of the weld.

Description

Technical Field

[0001] The present invention belongs to the technical field of aviation parts production, and specifically relates to a welding processing system and method for assembling a combined aviation aluminum shell. Background Art

[0002] Aviation aluminum shells show their unique advantages in aerospace parts. The following are their main advantages: 1) Lightweight and high strength: Aviation aluminum alloys have the characteristics of low density and high strength, which enables curved workpieces to significantly reduce the overall weight while ensuring structural strength. 2) Good corrosion resistance: Properly treated aviation aluminum alloys can effectively resist the erosion of the atmosphere, water and certain chemicals, extend service life and reduce maintenance costs. This is especially important for equipment operating in harsh environments. 3) Excellent processing performance: Aviation aluminum alloys are easy to process into complex curved shapes through various forming processes (such as forging, extrusion, stretching and deep drawing), and the material loss during processing is small and the yield rate is high. At the same time, it also supports precision machining and surface treatment technology to meet high-precision requirements. 4) Good thermal conductivity and electrical conductivity: Compared with other metal materials, aviation aluminum alloys have higher thermal conductivity and electrical conductivity, which is conducive to heat dissipation and electromagnetic shielding design, which is essential for high-performance electronic devices and systems that require effective heat dissipation. 5) Good fatigue resistance: After special alloying and heat treatment, aviation aluminum alloys can exhibit excellent fatigue resistance and maintain structural stability and safety even under repeated stress, which is crucial for long-term operation and high-load applications.

[0003] The traditional combined aviation aluminum shell assembly welding processing system was found to have shortcomings during use. First, it cannot reliably clamp the aviation aluminum alloy tube and provide reliable anti-deformation support during the hole opening and welding process; second, it cannot form an internal support component between two adjacent aviation aluminum alloy tubes to facilitate the installation of the threading plate, and requires additional processes for installation; third, it cannot achieve simultaneous welding of the inside and outside of the joints of two adjacent tubes, and cannot achieve uniform heating on both sides of the weld and relatively balanced internal stress, thereby reducing deformation and improving the overall quality of the weld. Therefore, it is necessary to optimize and improve the traditional combined aviation aluminum shell assembly welding processing system and method. Summary of the invention

[0004] 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 a welding processing system and method for assembling a combined aviation aluminum shell.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a welding processing system for assembling a combined aviation aluminum shell, comprising a clamping assembly, an inner support plate bending assembly, an inner support plate stamping and forming assembly, a seam welding assembly and an inner support plate punching assembly, wherein the inner support plate bending assembly is installed inside the clamping assembly, the inner support plate stamping and forming assembly is arranged at the periphery of the clamping assembly, and the seam welding assembly and the inner support plate punching assembly are arranged above the clamping assembly; the clamping assembly is used to connect and clamp the lower conical joint tube, the cylindrical joint tube and the upper conical joint tube in sequence; the inner support plate bending assembly and the inner support plate stamping and forming assembly are used together to perform punching processing on the upper and lower sides of the seam between the lower conical joint tube, the cylindrical joint tube and the upper conical joint tube, and a convex plate folded inwardly is formed during the punching and forming process, and the inner support plate bending assembly can bend the convex plate to form the inner support plate; the seam welding assembly can perform welding processing on the inner and outer sides of the seam at the same time; the inner support plate punching assembly can form and process mounting holes on the inner support plate to facilitate the installation of the threading plate through bolts.

[0007] Furthermore, in the above-mentioned welding processing system for assembling the combined aviation aluminum shell, the threading plate is composed of a disc portion and a plurality of protrusions distributed around its periphery, the disc portion is evenly provided with threading holes, and the protrusions are provided with matching mounting holes.

[0008] Furthermore, in the above-mentioned combined aviation aluminum shell assembly welding processing system, the clamping assembly includes a bottom base plate, a slewing bearing, a bottom support plate, a base, a vertical plate, an external suction clamp, a vertical linear guide pair, an annular support plate and an internal support clamp, the fixed ring portion of the slewing bearing is fixed on the bottom base plate, the movable ring portion of the slewing bearing is supported by the base and the vertical plate through the bottom support plate, the middle portion of the vertical plate is equipped with an external suction clamp for clamping a cylindrical section tube, the upper portion of the vertical plate is equipped with a vertical linear guide pair, the outer side of the slider of the vertical linear guide pair is fixed with an annular support plate, and the base and the annular support plate are each equipped with an internal support clamp for clamping a lower conical section tube or an upper conical section tube.

[0009] Furthermore, in the above-mentioned combined aviation aluminum shell assembly welding processing system, the external suction type clamp comprises a first horizontal push rod, an arc plate and an arc suction cup, the cylinder body of the first horizontal push rod is installed on the vertical plate, and the movable end of the first horizontal push rod is installed with an arc suction cup via the arc plate;

[0010] The internal support clamp includes an annular box, an annular turntable, a driven gear ring, a first motor, a driving gear, a slider, a sliding column and an internal support block. The inner plate of the annular box is provided with a plurality of radial sliding grooves along the circumferential direction. An annular turntable with a driven gear ring is installed inside the annular box. The outer plate of the annular box is fixed with the first motor. A driving gear meshing with the driven gear ring is installed at the output end of the first motor. The annular turntable is located on a side away from the driven gear ring and is provided with a plurality of arc-shaped sliding grooves along the circumferential direction. The sliding of the slider is restricted in the arc-shaped sliding grooves. The sliding of the sliding column is restricted in the radial sliding grooves. The internal support block is fixedly connected to the slider via the sliding column. An anti-slip conical surface layer is provided on the outer side of the internal support block.

[0011] Furthermore, in the above-mentioned combined aviation aluminum shell assembly welding processing system, the inner support plate bending assembly includes a first vertical push rod, a slip ring, a hexagonal column, a straightening frame, a horizontal flipping mechanism, a pressure-bearing mechanism, a convex frame and a bending mechanism, the straightening frame and the cylinder body of the first vertical push rod are fixed on the base, the movable end of the first vertical push rod is connected to the hexagonal column via a slip ring, the straightening frame is equipped with a horizontal flipping mechanism for driving the hexagonal column to rotate, two pressure-bearing mechanisms are installed on one side of the hexagonal column, and two bending mechanisms are installed on the other side of the hexagonal column via a convex frame.

[0012] Furthermore, in the above-mentioned combined aviation aluminum shell assembly welding processing system, the horizontal flip mechanism includes a second motor, an active anti-skid pulley, a driven anti-skid pulley and a transmission belt, the second motor is fixed on the straightening frame, an active anti-skid pulley is installed at the output end of the second motor, the active anti-skid pulley is connected to the driven anti-skid pulley through the transmission belt, the driven anti-skid pulley is movably supported by the straightening frame, and a through-shaft hole is provided in the driven anti-skid pulley for the hexagonal column to pass through;

[0013] The pressure-bearing mechanism includes a second horizontal push rod and a pressure-bearing block, the cylinder of the second horizontal push rod is fixed on the hexagonal column, the movable end of the second horizontal push rod is installed with a pressure-bearing block, and two groups of avoidance grooves are opened on the outer side of the pressure-bearing block, and each group of avoidance grooves includes two U-shaped grooves arranged oppositely;

[0014] The bending mechanism includes a groove plate, a positioning block, a third motor, a bidirectional screw, a movable plate and a bending pressure block. A positioning block matching the shape of the protrusion in the threading plate is fixed to the inner side of the web of the groove plate, and a third motor is fixed to the outer side of the groove plate. The output end of the third motor is connected to a bidirectional screw via a coupling. The bidirectional screw is provided with two screw parts with opposite rotation directions. A movable plate is sleeved and installed on the outer side of each screw part. One end of the movable plate slides against the web of the groove plate, and a bending pressure block is fixed to the inner side of the other end of the movable plate.

[0015] Furthermore, in the above-mentioned combined aviation aluminum shell assembly welding processing system, the inner support plate stamping forming assembly includes a side base plate, a third horizontal push rod, a cutting knife seat, a first U-shaped punching knife, a second U-shaped punching knife and an auxiliary bending block. There are two third horizontal push rods and they are arranged in parallel. The cylinder body of the third horizontal push rod is fixed on the side base plate. The movable end of the third horizontal push rod is installed with the first U-shaped punching knife and the second U-shaped punching knife arranged relatively via the cutting knife seat. The cutting knife seat is located inside the first U-shaped punching knife and the second U-shaped punching knife and is installed with an auxiliary bending block.

[0016] Furthermore, in the above-mentioned combined aviation aluminum shell assembly welding processing system, the seam welding assembly includes a first vertical rectangular frame, a fourth motor, a first vertical screw rod, a first bracket and a laser welding head, the fourth motor is fixed to the outer side of the first vertical rectangular frame, the output end of the fourth motor is connected to the first vertical screw rod via a coupling, the outer side of the first vertical screw rod is sleeved with a first bracket that slides against the inner side wall of the first vertical rectangular frame, and the bottom end of the first bracket is equipped with two relatively arranged laser welding heads.

[0017] Furthermore, in the above-mentioned combined aviation aluminum shell assembly welding processing system, the inner support plate punching assembly includes a second vertical rectangular frame, a fifth motor, a second vertical screw rod, a second bracket, a horizontal support plate, a sixth motor, an eccentric rotating plate and a laser drilling head, the fifth motor is fixed to the outer side of the second vertical rectangular frame, the output end of the fifth motor is connected to the second vertical screw rod via a coupling, the outer side of the second vertical screw rod is sleeved with a second bracket that slides against the inner side wall of the second vertical rectangular frame, the bottom end of the second bracket is installed with the sixth motor via the horizontal support plate, and the output end of the sixth motor is installed with a laser drilling head via the eccentric rotating plate.

[0018] The present invention also provides a welding method for assembling a combined aviation aluminum shell, which is implemented based on the above-mentioned welding system and is characterized in that it includes the following steps:

[0019] S1. Use a clamping assembly to sequentially butt-jointly clamp the lower conical joint tube, the cylindrical joint tube, and the upper conical joint tube, so that the lower conical joint tube, the cylindrical joint tube, and the upper conical joint tube together constitute an aviation aluminum shell semi-finished product A;

[0020] S2. Use the pressure-bearing mechanism of the inner support plate bending assembly to provide internal support for the position where the hole is to be opened at the joint of the aviation aluminum shell semi-finished product A, and use the inner support plate stamping and forming assembly to punch and cut holes, so that a group of punched holes are formed on the aviation aluminum shell semi-finished product A, and the inner edge of the punched holes is connected to a convex plate folded inward; each time the punching process is completed, the clamping assembly drives the aviation aluminum shell semi-finished product A to rotate horizontally by a certain angle, and at the same time, the pressure-bearing mechanism in the inner support plate bending assembly rotates horizontally in the opposite direction by a certain angle, and the inner support plate stamping and forming assembly can be used to perform punching again; repeat the above steps until all the punching processes are completed;

[0021] S3, using the bending mechanism of the inner support plate bending assembly to bend the relative convex plates into inner support plates; each time the bending process is completed, the clamping assembly drives the aviation aluminum shell semi-finished product A to rotate horizontally by a certain angle until the bending process of all the convex plates is completed to obtain the aviation aluminum shell semi-finished product B;

[0022] S4. Use the seam welding assembly to weld the two circles of seams of the aviation aluminum shell semi-finished product B on both the inside and outside at the same time, and use the inner support plate punching assembly to laser punch the inner support plate of the aviation aluminum shell semi-finished product B to form installation holes to obtain the aviation aluminum shell semi-finished product C.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention provides a welding processing system for assembling a modular aviation aluminum shell, which is mainly composed of a clamping assembly, an inner support plate bending assembly, an inner support plate stamping assembly, a seam welding assembly and an inner support plate punching assembly. The clamping assembly is used to sequentially dock and clamp the main components of the modular aviation aluminum shell; the inner support plate bending assembly and the inner support plate stamping assembly are used to perform punching processing on the upper and lower sides of the seam of the modular aviation aluminum shell, and a convex plate folded inward is formed during the punching process, and the convex plate is bent by the inner support plate bending assembly to form an inner support plate; the seam welding assembly can be used to simultaneously perform welding processing on the inner and outer sides of the seam; the inner support plate punching assembly can be used to form mounting holes on the inner support plate for installing the threading plate through bolts, so that the main components of the modular aviation aluminum shell can be reliably clamped, and reliable anti-deformation support can be provided during the hole opening and welding process; at the same time, the inner and outer sides of the seam can be welded simultaneously to achieve uniform heating on both sides of the weld and relatively balanced internal stress, thereby reducing deformation and improving the overall quality of the weld.

[0025] 2. The combined aviation aluminum shell prepared by the present invention is scientifically and reasonably designed. It can be formed inside the combined aviation aluminum shell to facilitate the installation of the internal support components of the threading plate without the need for additional installation processes; the combined aviation aluminum shell fully utilizes the advantages of aviation aluminum alloy's high thermal conductivity and electrical conductivity, which is conducive to heat dissipation and electromagnetic shielding design.

[0026] 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

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. 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.

[0028] Figure 1 It is a schematic diagram of the composition of the welding processing system of the present invention;

[0029] Figure 2 It is a schematic diagram of the processing flow of the combined aviation aluminum shell in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the threading plate in the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the clamping assembly in the present invention;

[0032] Figure 5 It is a structural schematic diagram of the external suction type clamper in the present invention;

[0033] Figure 6 It is a structural schematic diagram of the internal support type clamp in the present invention;

[0034] Figure 7 It is a structural schematic diagram of one side of the annular turntable in the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the other side of the annular turntable in the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the inner plate of the annular box in the present invention;

[0037] Fig.10 It is a structural schematic diagram of the inner support plate bending assembly in the present invention;

[0038] Fig.11 It is a structural schematic diagram of the horizontal flipping mechanism in the present invention;

[0039] Fig.12 It is a structural schematic diagram of the pressure-bearing mechanism in the present invention;

[0040] Fig.13 It is a structural schematic diagram of the bending mechanism in the present invention;

[0041] Fig.14It is a schematic diagram of the use state of the inner support plate stamping forming assembly in the present invention;

[0042] Fig.15 This is a schematic diagram of the structural decomposition of the aviation aluminum shell semi-finished product B in the present invention;

[0043] Fig.16 It is a structural schematic diagram of the inner support plate stamping forming assembly in the present invention;

[0044] Fig.17 It is a structural schematic diagram of the seam welding assembly in the present invention;

[0045] Fig.18 It is a structural schematic diagram of the inner support plate punching assembly in the present invention;

[0046] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0047] 1-clamping assembly, 11-bottom base plate, 12-slewing bearing, 13-bottom supporting plate, 14-base, 15-vertical plate, 16-external suction clamp, 161-first horizontal push rod, 162-arc plate, 163-arc suction cup, 17-vertical linear guide pair, 18-annular supporting plate, 19-inner support clamp, 191-annular box, 192-annular turntable, 193-driven gear ring, 194-first motor, 195-driving gear, 196-slider, 197-sliding column, 198-inner support block;

[0048] 2-inner support plate bending assembly, 21-first vertical push rod, 22-slip ring, 23-hexagonal column, 24-righting frame, 25-horizontal flip mechanism, 251-second motor, 252-active anti-skid pulley, 253-driven anti-skid pulley, 254-transmission belt, 26-pressure mechanism, 261-second horizontal push rod, 262-pressure block, 27-convex frame, 28-bending mechanism, 281-groove plate, 282-positioning block, 283-third motor, 284-bidirectional screw rod, 285-movable plate, 286-bending pressure block;

[0049] 3- inner support plate stamping forming assembly, 31- side base plate, 32- third horizontal push rod, 33- cutting knife seat, 34- first U-shaped cutting knife, 35- second U-shaped cutting knife, 36- auxiliary bending block;

[0050] 4- seam welding assembly, 41- first vertical rectangular frame, 42- fourth motor, 43- first vertical screw rod, 44- first bracket, 45- laser welding head;

[0051] 5-inner support plate punching assembly, 51-second vertical rectangular frame, 52-fifth motor, 53-second vertical screw rod, 54-second bracket, 55-horizontal support plate, 56-sixth motor, 57-eccentric rotating plate, 58-laser punching head;

[0052] 6a-aerospace aluminum shell semi-finished product A, 6b-aerospace aluminum shell semi-finished product B, 6c-aerospace aluminum shell semi-finished product C, 6d-assembled aviation aluminum shell, 61-lower conical section tube, 62-columnar section tube, 63-upper conical section tube, 64-punching hole, 65-inner support plate, 66-mounting hole, 67-threading plate, 671-disc part, 672-bump, 673-threading hole, 674-matching mounting hole, 68-bolt. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0054] like Figure 1 and Figure 2 As shown, this embodiment provides a welding processing system for assembling a combined aviation aluminum shell, including a clamping assembly 1, an inner support plate bending assembly 2, an inner support plate stamping assembly 3, a seam welding assembly 4 and an inner support plate punching assembly 5, the inner support plate bending assembly 2 is installed inside the clamping assembly 1, the inner support plate stamping assembly 3 is arranged at the periphery of the clamping assembly 1, and the seam welding assembly 4 and the inner support plate punching assembly 5 are arranged above the clamping assembly 1. The clamping assembly 1 is used to connect and clamp the lower conical joint tube 61, the cylindrical joint tube 62 and the upper conical joint tube 63 in sequence; the inner support plate bending assembly 2 and the inner support plate stamping assembly 3 are used together to punch holes 64 on the upper and lower sides of the joints between the lower conical joint tube 61, the cylindrical joint tube 62 and the upper conical joint tube 63, and a convex plate folded inward is formed during the punching 64 forming process. The inner support plate bending assembly 2 can bend the convex plate to form an inner support plate 65; the seam welding assembly 4 can perform welding processing on both the inner and outer sides of the seam at the same time; the inner support plate punching assembly 5 can form and process on the inner support plate 65 the mounting holes 66 for facilitating the installation of the threading plate 67 through the bolts 68.

[0055] like Figure 3 As shown, the threading plate 67 is composed of a disk portion 671 and a plurality of protrusions 672 distributed around its periphery. The disk portion 671 is evenly distributed with threading holes 673 , and the protrusions 672 are provided with matching mounting holes 674 .

[0056] like Figure 4As shown, the clamping assembly 1 includes a bottom base plate 11, a slewing bearing 12, a bottom support plate 13, a base 14, a vertical plate 15, an external suction clamp 16, a vertical linear guide pair 17, an annular support plate 18 and an internal support clamp 19. The fixed ring portion of the slewing bearing 12 is fixed on the bottom base plate 11, and the movable ring portion of the slewing bearing 12 supports the base 14 and the vertical plate 15 through the bottom support plate 13. The middle part of the vertical plate 15 is equipped with an external suction clamp 16 for clamping the cylindrical joint tube 62, the upper part of the vertical plate 15 is equipped with a vertical linear guide pair 17, the outer side of the slider of the vertical linear guide pair 17 is fixed with an annular support plate 18, and the base 14 and the annular support plate 18 are each equipped with an internal support clamp 19 for clamping the lower conical joint tube 61 or the upper conical joint tube 63.

[0057] like Figure 5 As shown, the external suction clamp 16 includes a first horizontal push rod 161, an arc plate 162 and an arc suction cup 163. The cylinder body of the first horizontal push rod 161 is installed on the vertical plate 15, and the movable end of the first horizontal push rod 161 is installed with the arc suction cup 163 through the arc plate 162.

[0058] The working principle of the external suction clamp 16 is as follows: when the cylindrical joint tube 62 needs to be adsorbed, the movable rod of the first horizontal push rod 161 extends, and drives the arc-shaped suction cup 163 to move toward the cylindrical joint tube 62 through the arc-shaped plate 162, until the arc-shaped suction cup 163 fits the outer wall of the cylindrical joint tube 62, and the arc-shaped suction cup 163 is activated, and is connected to the cylindrical joint tube 62 by negative pressure. If necessary, the pressure-bearing mechanism 26 of the inner support plate bending assembly 2 can be used to provide support in the inner direction during the adsorption process to avoid docking displacement.

[0059] like Figure 6-Figure 9 As shown, the internal support type clamp 19 includes an annular box 191, an annular rotating disk 192, a driven gear ring 193, a first motor 194, a driving gear 195, a slider 196, a slide post 197 and an internal support block 198. The inner side plate of the annular box 191 is provided with a plurality of radial slide grooves along the circumferential direction, and the annular rotating disk 192 with the driven gear ring 193 is installed inside the annular box 191. The outer side plate of the annular box 191 is fixed with the first motor 194, and the output end of the first motor 194 is provided with a driving gear 195 meshing with the driven gear ring 193, and the annular rotating disk 192 is provided with a plurality of arc-shaped slide grooves along the circumferential direction on the side away from the driven gear ring 193. The slider 196 is slidably restricted in the arcuate slide groove, the slide post 197 is slidably restricted in the radial slide groove, the inner support block 198 is fixedly connected to the slider 196 via the slide post 197, and the outer side of the inner support block 198 is provided with an anti-slip conical surface layer matching the inclination of the corresponding conical joint pipe.

[0060] The working principle of the internal support clamp 19 is as follows: when it is necessary to clamp and lock the lower conical joint tube 61 or the upper conical joint tube 63, start the first motor 194, the first motor 194 drives the driving gear 195, and the driven gear ring 193 and the annular turntable 192 also rotate accordingly, thereby pushing the clamping claw composed of the slider 196, the slide column 197 and the internal support block 198 to move radially outward, and clamp and lock the lower conical joint tube 61 or the upper conical joint tube 63 from the inside.

[0061] The overall working principle of the clamping assembly 1 is as follows: First, when the lower conical joint tube 61, the cylindrical joint tube 62 and the upper conical joint tube 63 are docked in sequence and placed on the base 14, the vertical linear guide pair 17 drives the annular support plate 18 to move down to a suitable displacement, and the cylindrical joint tube 62 is adsorbed and clamped by the external suction clamp 16, and the lower conical joint tube 61 and the upper conical joint tube 63 are clamped and locked by the upper and lower internal support clamps 19. When the circumferential position of the aviation aluminum shell semi-finished product needs to be adjusted, starting the slewing bearing 12 can drive it to rotate horizontally. The design of the annular support plate 18 facilitates the subsequent seam welding assembly 4 and the internal support plate punching assembly 5 to enter the interior of the aviation aluminum shell semi-finished product from the upper side.

[0062] like Fig.10 As shown, the inner support plate bending assembly 2 includes a first vertical push rod 21, a slip ring 22, a hexagonal column 23, a straightening frame 24, a horizontal flipping mechanism 25, a pressure-bearing mechanism 26, a convex frame 27 and a bending mechanism 28. The straightening frame 24 and the cylinder of the first vertical push rod 21 are fixed on the base 14. The movable end of the first vertical push rod 21 is connected to the hexagonal column 23 via the slip ring 22. The straightening frame 24 is equipped with a horizontal flipping mechanism 25 for driving the hexagonal column 23 to rotate. Two pressure-bearing mechanisms 26 are installed on one side of the hexagonal column 23, and two bending mechanisms 28 are installed on the other side of the hexagonal column 23 via the convex frame 27.

[0063] like Fig.11 As shown, the horizontal flip mechanism 25 includes a second motor 251, an active anti-skid pulley 252, a driven anti-skid pulley 253 and a transmission belt 254. The second motor 251 is fixed on the straightening frame 24. The output end of the second motor 251 is equipped with an active anti-skid pulley 252, and the active anti-skid pulley 252 is connected to the driven anti-skid pulley 253 through the transmission belt 254. The driven anti-skid pulley 253 is provided with an axial hole for the hexagonal column 23 to pass through.

[0064] The working principle of the horizontal flipping mechanism 25 is as follows: when the second motor 251 is started, the second motor 251 drives the active anti-skid pulley 252 to rotate, and the active anti-skid pulley 252 drives the driven anti-skid pulley 253 to rotate via the transmission belt 254, and the driven anti-skid pulley 253 then drives the hexagonal column 23 to rotate. In this way, the circumferential position of the pressure-bearing mechanism 26 and the bending mechanism 28 can be adjusted.

[0065] like Fig.12 As shown, the pressure-bearing mechanism 26 includes a second horizontal push rod 261 and a pressure block 262. The cylinder body of the second horizontal push rod 261 is fixed on the hexagonal column 23. The movable end of the second horizontal push rod 261 is equipped with a pressure block 262. The outer side surface of the pressure block 262 is composed of an arc surface that cooperates with the inner wall of the cylindrical joint tube 62 and a conical surface that cooperates with the inner wall of the corresponding conical joint tube. Two groups of avoidance grooves are opened on the outer side of the pressure block 262, and each group of avoidance grooves includes two relatively arranged U-shaped grooves.

[0066] The working principle of the pressure mechanism 26 is as follows: when it is necessary to provide internal support to the area to be drilled inside the joint, the movable rod of the second horizontal push rod 261 extends to drive the outer side surface of the pressure block 262 to fit the inner wall of the area to be drilled.

[0067] like Fig.13 As shown, the bending mechanism 28 includes a groove plate 281, a positioning block 282, a third motor 283, a bidirectional screw 284, a movable plate 285 and a bending pressure block 286. The inner side of the web of the groove plate 281 is fixed with a positioning block 282 that matches the shape of the protrusion 672 in the threading plate 67, the outer side of the groove plate 281 is fixed with a third motor 283, and the output end of the third motor 283 is connected to the bidirectional screw 284 via a coupling. The bidirectional screw 284 is provided with two screw parts with opposite rotation directions, and a movable plate 285 is sleeved and installed on the outer side of each screw part. One end of the movable plate 285 slides against the web of the groove plate 281, and a bending pressure block 286 is fixed to the inner side of the other end of the movable plate 285.

[0068] The working principle of the bending mechanism 28 is as follows: when the convex plate needs to be bent, the third motor 283 is started, and the third motor 283 drives the bidirectional screw rod 284 to rotate, and the movable plate 285 and the bending pressure block 286 are displaced accordingly, and the two bending pressure blocks 286 approach each other, and the convex plate is bent into the inner support plate 65 under the extrusion action of the positioning block 282 and the bending pressure block 286.

[0069] The overall working principle of the inner support plate bending assembly 2 is: the pressure mechanism 26 is used to provide internal support during the punching 64 forming process, and the bending mechanism 28 is used to bend the convex plate into the inner support plate 65. When the bending operation is completed, the horizontal flip mechanism 25 is first used to drive the hexagonal column 23 and the pressure mechanism 26 and the bending mechanism 28 thereon to rotate circumferentially, and then the first vertical push rod 21 is used to drive the hexagonal column 23 and the pressure mechanism 26 and the bending mechanism 28 thereon to descend. By this method of first dislocation and then descending, the pressure mechanism 26 can be separated from the inner support plate 65, which is beneficial to the subsequent seam welding process and the punching process of the inner support plate 65.

[0070] like Figure 14-16 As shown, the inner support plate stamping forming assembly 3 includes a side base plate 31, a third horizontal push rod 32, a cutter seat 33, a first U-shaped punching cutter 34, a second U-shaped punching cutter 35 and an auxiliary bending block 36. There are two third horizontal push rods 32 and they are arranged in parallel. The cylinder body of the third horizontal push rod 32 is fixed on the side base plate 31. The movable end of the third horizontal push rod 32 is installed with a first U-shaped punching cutter 34 and a second U-shaped punching cutter 35 arranged opposite to each other through the cutter seat 33. The cutter seat 33 is located inside the first U-shaped punching cutter 34 and the second U-shaped punching cutter 35 and is installed with an auxiliary bending block 36. The first U-shaped punching cutter 34 is used to punch the cylindrical section tube 62, and the second U-shaped punching cutter 35 is used to punch the conical section tube. In order to further improve the cutting effect, the outer side surface of the second U-shaped punching cutter 35 can be set to a special-shaped surface that fits the outer side surface of the conical section tube.

[0071] The working principle of the inner support plate stamping forming assembly 3 is as follows: when punching 64 is required, after the pressure-bearing mechanism 26 provides internal support for the area to be opened on the inner side of the joint, the third horizontal push rod 32 is started, and the movable rod of the third horizontal push rod 32 is extended, and the first U-shaped punching cutter 34 and the second U-shaped punching cutter 35 are driven through the cutting knife seat 33 to quickly impact the outer opening area on the outer side of the joint. After the punching is formed, the second horizontal push rod 261 of the pressure-bearing mechanism 26 drives the pressure block 262 to retract. At this time, the third horizontal push rod 32 drives the first U-shaped punching cutter 34 and the second U-shaped punching cutter 35 to move further inward, and the auxiliary bending block 36 is used to push the convex plate to make it bend inward, which is beneficial to the subsequent bending process of the convex plate.

[0072] like Fig.17 As shown, the seam welding assembly 4 includes a first vertical rectangular frame 41, a fourth motor 42, a first vertical screw rod 43, a first bracket 44 and a laser welding head 45. The fourth motor 42 is fixed to the outer side of the first vertical rectangular frame 41, and the output end of the fourth motor 42 is connected to the first vertical screw rod 43 via a coupling. The outer side of the first vertical screw rod 43 is sleeved with a first bracket 44 that slides against the inner wall of the first vertical rectangular frame 41, and two relatively arranged laser welding heads 45 are installed at the bottom end of the first bracket 44.

[0073] The working principle of the seam welding assembly 4 is as follows: the fourth motor 42 is used to drive the first vertical screw 43 to rotate, and the first bracket 44 moves downward and drives the two laser welding heads 45 to approach the inner and outer sides of a seam respectively. During the operation of the laser welding head 45, the seam is driven to rotate by the clamping assembly 1, so that the simultaneous welding process of the inner and outer sides of the seam can be completed. Then the first bracket 44 moves downward and drives the two laser welding heads 45 to approach the inner and outer sides of the next seam respectively, and performs another welding process. The inner support plate bending assembly 2 uses the horizontal flipping mechanism 25 to drive the hexagonal column 23 and the pressure-bearing mechanism 26 and the bending mechanism 28 thereon to rotate circumferentially, thereby avoiding the first bracket 44 and the laser welding head 45 from moving downward.

[0074] like Fig.18 As shown, the inner support plate punching assembly 5 includes a second vertical rectangular frame 51, a fifth motor 52, a second vertical screw rod 53, a second bracket 54, a horizontal support plate 55, a sixth motor 56, an eccentric rotating plate 57 and a laser drilling head 58. The fifth motor 52 is fixed to the outside of the second vertical rectangular frame 51, and the output end of the fifth motor 52 is connected to the second vertical screw rod 53 via a coupling, and the second bracket 54 that slides against the inner side wall of the second vertical rectangular frame 51 is sleeved on the outside of the second vertical screw rod 53. The sixth motor 56 is installed at the bottom end of the second bracket 54 via the horizontal support plate 55, and the laser drilling head 58 is installed at the output end of the sixth motor 56 via the eccentric rotating plate 57.

[0075] The working principle of the inner support plate punching assembly 5 is as follows: the fifth motor 52 drives the second vertical screw rod 53 to rotate, and the laser punching head 58 moves downward; the sixth motor 56 is actuated, and the laser punching head 58 is driven to move to the position directly above the upper inner support plate 65 through the eccentric rotating plate 57, and the laser punching head 58 is started to perform punching processing on the two inner support plates 65 in the same group. After each processing is completed, the inner support plate 65 is driven to rotate by the clamping assembly 1, so that the new inner support plate 65 without a hole is transferred to the position directly below the laser punching head 58, and laser punching can be performed again until the punching processing of all the inner support plates 65 of this layer is completed. Then the sixth motor 56 moves in the opposite direction, driving the laser drilling head 58 to move away from directly above the inner support plate 65 via the eccentric rotating plate 57. The laser drilling head 58 starts and uses the fifth motor 52 to drive the second vertical screw 53 to rotate. The laser drilling head 58 continues to move downward until it is close to directly above the lower inner support plate 65, and then the drilling process of the lower inner support plate 65 can be carried out.

[0076] This embodiment also provides a welding processing method for assembling a combined aviation aluminum shell, comprising the following steps:

[0077] S1. Use the clamping assembly 1 to sequentially dock and clamp the lower conical joint tube 61, the cylindrical joint tube 62 and the upper conical joint tube 63, and the lower conical joint tube 61, the cylindrical joint tube 62 and the upper conical joint tube 63 together constitute the aviation aluminum shell semi-finished product A6a;

[0078] S2, using the pressure-bearing mechanism 26 of the inner support plate bending assembly 2 to provide internal support for the position where the hole is to be opened at the joint of the semi-finished aviation aluminum shell A6a, and using the inner support plate stamping and forming assembly 3 to punch and cut holes, so that a group of punching holes 64 are formed on the semi-finished aviation aluminum shell A6a, and the inner edge of the punching hole 64 is connected to a convex plate folded inward; each time the punching process is completed, the clamping assembly 1 drives the semi-finished aviation aluminum shell A6a to rotate horizontally by a certain angle, and at the same time, the pressure-bearing mechanism 26 in the inner support plate bending assembly 2 rotates horizontally in the opposite direction by a certain angle, and the inner support plate stamping and forming assembly 3 can be used to perform punching again; repeat the above steps until all the punching processes are completed;

[0079] S3, using the bending mechanism 28 of the inner support plate bending assembly 2 to bend the relative convex plates into the inner support plates 65; each time the bending process is completed, the clamping assembly 1 drives the aviation aluminum shell semi-finished product A6a to rotate horizontally by a certain angle until the bending process of all the convex plates is completed to obtain the aviation aluminum shell semi-finished product B6b;

[0080] S4. Use the seam welding assembly 4 to simultaneously weld the two circles of seams on the inside and outside of the aviation aluminum shell semi-finished product B6b, and use the inner support plate punching assembly 5 to laser punch the inner support plate 65 of the aviation aluminum shell semi-finished product B6b to form mounting holes 66 to obtain the aviation aluminum shell semi-finished product C6c.

[0081] At this time, a robot can be used to insert a threading plate 67 into the interior of the aviation aluminum shell semi-finished product C6c, rotate the threading plate 67 so that the matching mounting hole 674 of the protrusion 672 is aligned with the mounting hole 66 of the inner support plate 65, and then tighten the bolt 68 to complete the assembly to obtain a combined aviation aluminum shell 6d.

[0082] The preferred embodiments of the present invention disclosed above are only useful to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A combined aviation aluminum shell assembly welding processing system, characterized in that: It includes a clamping assembly, an inner support plate bending assembly, an inner support plate stamping and forming assembly, a seam welding assembly and an inner support plate punching assembly, wherein the inner support plate bending assembly is installed inside the clamping assembly, the inner support plate stamping and forming assembly is arranged at the periphery of the clamping assembly, and the seam welding assembly and the inner support plate punching assembly are arranged above the clamping assembly; the clamping assembly is used to connect and clamp the lower conical section tube, the cylindrical section tube and the upper conical section tube in sequence; the inner support plate bending assembly and the inner support plate stamping and forming assembly are used together to perform punching processing on the upper and lower sides of the seam between the lower conical section tube, the cylindrical section tube and the upper conical section tube, and a convex plate folded inwardly is formed during the punching and forming process, and the inner support plate bending assembly can bend the convex plate to form the inner support plate; the seam welding assembly can perform welding processing on the inner and outer sides of the seam at the same time; the inner support plate punching assembly can form and process the mounting holes on the inner support plate to facilitate the installation of the threading plate through bolts; The clamping assembly comprises a bottom base plate, a slewing bearing, a bottom support plate, a base, a vertical plate, an external suction clamp, a vertical linear guide pair, an annular support plate and an internal support clamp, the fixed ring portion of the slewing bearing is fixed on the bottom base plate, the movable ring portion of the slewing bearing is supported by the base and the vertical plate through the bottom support plate, the middle portion of the vertical plate is equipped with an external suction clamp for clamping a cylindrical joint tube, the upper portion of the vertical plate is equipped with a vertical linear guide pair, the outer side of the slider of the vertical linear guide pair is fixed with an annular support plate, and the base and the annular support plate are each equipped with an internal support clamp for clamping a lower conical joint tube or an upper conical joint tube; The inner support plate bending assembly includes a first vertical push rod, a slip ring, a hexagonal column, a straightening frame, a horizontal flipping mechanism, a pressure-bearing mechanism, a convex frame and a bending mechanism. The straightening frame and the cylinder body of the first vertical push rod are fixed on the base. The movable end of the first vertical push rod is connected to the hexagonal column via a slip ring. The straightening frame is equipped with a horizontal flipping mechanism for driving the hexagonal column to rotate. Two pressure-bearing mechanisms are installed on one side of the hexagonal column, and two bending mechanisms are installed on the other side of the hexagonal column via a convex frame. The inner support plate stamping forming assembly includes a side base plate, a third horizontal push rod, a cutting knife seat, a first U-shaped cutting knife, a second U-shaped cutting knife and an auxiliary bending block. There are two third horizontal push rods in total and they are arranged in parallel. The cylinder body of the third horizontal push rod is fixed on the side base plate. The movable end of the third horizontal push rod is installed with a first U-shaped cutting knife and a second U-shaped cutting knife arranged oppositely through the cutting knife seat. The cutting knife seat is located inside the first U-shaped cutting knife and the second U-shaped cutting knife and is installed with an auxiliary bending block. The seam welding assembly comprises a first vertical rectangular frame, a fourth motor, a first vertical screw rod, a first bracket and a laser welding head, the fourth motor is fixed to the outside of the first vertical rectangular frame, the output end of the fourth motor is connected to the first vertical screw rod via a coupling, the first vertical screw rod is sleeved on the outside of the first vertical screw rod and is slidably abutted against the inner side wall of the first vertical rectangular frame, and two laser welding heads arranged opposite to each other are installed at the bottom end of the first bracket; The inner support plate punching assembly includes a second vertical rectangular frame, a fifth motor, a second vertical screw rod, a second bracket, a horizontal support plate, a sixth motor, an eccentric rotating plate and a laser drilling head. The fifth motor is fixed to the outer side of the second vertical rectangular frame, the output end of the fifth motor is connected to the second vertical screw rod via a coupling, the outer side of the second vertical screw rod is sleeved with a second bracket that slides against the inner side wall of the second vertical rectangular frame, the bottom end of the second bracket is installed with the sixth motor via the horizontal support plate, and the output end of the sixth motor is installed with a laser drilling head via the eccentric rotating plate.

2. The combined aviation aluminum shell assembly welding processing system according to claim 1 is characterized in that: The threading plate is composed of a disc portion and a plurality of protrusions distributed around the periphery thereof. The disc portion is evenly distributed with threading holes, and the protrusions are provided with matching installation holes.

3. The combined aviation aluminum shell assembly welding processing system according to claim 2 is characterized in that: The external suction type clamp comprises a first horizontal push rod, an arc plate and an arc suction cup, wherein the cylinder body of the first horizontal push rod is mounted on the vertical plate, and the movable end of the first horizontal push rod is mounted with an arc suction cup via the arc plate; The internal support clamp includes an annular box, an annular turntable, a driven gear ring, a first motor, a driving gear, a slider, a sliding column and an internal support block. The inner plate of the annular box is provided with a plurality of radial sliding grooves along the circumferential direction. An annular turntable with a driven gear ring is installed inside the annular box. The outer plate of the annular box is fixed with the first motor. A driving gear meshing with the driven gear ring is installed at the output end of the first motor. The annular turntable is located on a side away from the driven gear ring and is provided with a plurality of arc-shaped sliding grooves along the circumferential direction. The sliding of the slider is restricted in the arc-shaped sliding grooves. The sliding of the sliding column is restricted in the radial sliding grooves. The internal support block is fixedly connected to the slider via the sliding column. An anti-slip conical surface layer is provided on the outer side of the internal support block.

4. The combined aviation aluminum shell assembly welding processing system according to claim 3 is characterized in that: The horizontal flip mechanism includes a second motor, an active anti-skid pulley, a driven anti-skid pulley and a transmission belt, the second motor is fixed on the straightening frame, an active anti-skid pulley is installed at the output end of the second motor, the active anti-skid pulley is connected to the driven anti-skid pulley through the transmission belt, the driven anti-skid pulley is movably supported by the straightening frame, and a through-shaft hole is provided in the driven anti-skid pulley for the hexagonal column to pass through; The pressure-bearing mechanism includes a second horizontal push rod and a pressure-bearing block, the cylinder of the second horizontal push rod is fixed on the hexagonal column, the movable end of the second horizontal push rod is installed with a pressure-bearing block, and two groups of avoidance grooves are opened on the outer side of the pressure-bearing block, and each group of avoidance grooves includes two U-shaped grooves arranged oppositely; The bending mechanism includes a groove plate, a positioning block, a third motor, a bidirectional screw, a movable plate and a bending pressure block. A positioning block matching the shape of the protrusion in the threading plate is fixed to the inner side of the web of the groove plate, and a third motor is fixed to the outer side of the groove plate. The output end of the third motor is connected to a bidirectional screw via a coupling. The bidirectional screw is provided with two screw parts with opposite rotation directions. A movable plate is sleeved and installed on the outer side of each screw part. One end of the movable plate slides against the web of the groove plate, and a bending pressure block is fixed to the inner side of the other end of the movable plate.

5. A welding method for assembling a combined aviation aluminum shell, implemented based on the welding system of claim 4, characterized in that: The steps include: S1. Use a clamping assembly to sequentially butt-jointly clamp the lower conical joint tube, the cylindrical joint tube, and the upper conical joint tube, so that the lower conical joint tube, the cylindrical joint tube, and the upper conical joint tube together constitute an aviation aluminum shell semi-finished product A; S2. Use the pressure-bearing mechanism of the inner support plate bending assembly to provide internal support for the position where the hole is to be opened at the joint of the aviation aluminum shell semi-finished product A, and use the inner support plate stamping and forming assembly to punch and cut holes, so that a group of punched holes are formed on the aviation aluminum shell semi-finished product A, and the inner edge of the punched holes is connected to a convex plate folded inward; each time the punching process is completed, the clamping assembly drives the aviation aluminum shell semi-finished product A to rotate horizontally by a certain angle, and at the same time, the pressure-bearing mechanism in the inner support plate bending assembly rotates horizontally in the opposite direction by a certain angle, and the inner support plate stamping and forming assembly can be used to perform punching again; repeat the above steps until all the punching processes are completed; S3, using the bending mechanism of the inner support plate bending assembly to bend the relative convex plates into inner support plates; each time the bending process is completed, the clamping assembly drives the aviation aluminum shell semi-finished product A to rotate horizontally by a certain angle until the bending process of all the convex plates is completed to obtain the aviation aluminum shell semi-finished product B; S4. Use the seam welding assembly to weld the two circles of seams of the aviation aluminum shell semi-finished product B on both the inside and outside at the same time, and use the inner support plate punching assembly to laser punch the inner support plate of the aviation aluminum shell semi-finished product B to form installation holes to obtain the aviation aluminum shell semi-finished product C.

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