Butt joint tool for welding processing of spaceflight empennage sheet

Abstract

The invention relates to a butt-joint tool for welding a spaceflight empennage piece, belongs to the technical field of spaceflight empennage piece welding, and aims to solve the problems that an existing tool is low in positioning and welding efficiency, welding positioning precision is difficult to guarantee, equipment universality is poor, welding process control capacity is insufficient, and welding gun distance and path deviation rectifying capacity is poor. A sliding rail is fixedly connected to the base frame, a sliding plate is connected to the sliding rail in a sliding mode, a placing base is fixedly connected to the sliding plate, a clamping assembly is arranged on the placing base, a fixing frame is fixedly connected to the base frame, a guide rod is fixedly connected to the fixing frame, and a sliding base is connected to the guide rod in a sliding mode. A connecting frame is fixedly connected to the sliding base, an arc-shaped frame is installed on the end side of the connecting frame, and a welding mechanism is installed on the arc-shaped frame. Rapid and accurate positioning and clamping and automatic butt joint of empennage pieces can be achieved, the empennage pieces are adjusted in a self-adaptive mode to adapt to multiple types, intelligent monitoring and deviation correction are achieved, and the welding quality and efficiency are guaranteed in an all-around mode.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace fin welding, and specifically relates to a butt joint tooling for aerospace fin welding and processing. Background Art

[0002] An aerospace plane refers to a heavier-than-air aircraft with wings and one or more engines that can fly in the atmosphere by its own power. To improve flight stability, fins are usually installed at the tail of the plane. Most fins include horizontal fins and vertical fins, and a few use V-shaped fins. As a core component for aircraft attitude control and aerodynamic performance, the welding quality of aerospace fins is directly related to the success or failure of aerospace missions.

[0003] Currently, most of the fin welding on the market is carried out by driving a welding torch to move along a preset path. However, during the welding process of aerospace fins, the high-temperature welding slag is extremely easy to invade the tooling transmission mechanism. The invaded welding slag will form mechanical blockage, interfere with the normal operation of the transmission components, cause the actual movement trajectory of the welding torch to deviate from the preset path, lead to misalignment of the welding position, result in welding quality defects, cause the fins to be directly scrapped, and greatly reduce the product qualification rate. Moreover, with the continuous high-frequency welding operations, the core components of the tooling will inevitably show wear. This wear will change the initial set distance between the welding torch and the fin, resulting in problems such as overheating and fusing of the welding wire due to too close welding distance, slag sticking to the welding torch nozzle, or problems such as decreased arc stability, welding slag splashing, and lack of fusion in the weld due to too far distance, seriously affecting the stability of welding quality.

[0004] In view of the above problems, a butt joint tooling for aerospace fin welding and processing is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a butt joint tooling for aerospace fin welding and processing. By using this device for work, the problems of low positioning and welding efficiency, difficult to guarantee welding positioning accuracy, poor equipment versatility, insufficient welding process control ability, and lack of welding torch path deviation correction ability in the existing tooling proposed in the above background are solved.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A butt joint tooling for aerospace fin welding and processing, including a base frame, a slide rail is fixedly connected to the base frame, a slide plate is slidably connected to the slide rail, a docking assembly is installed on the base frame, a placement seat is fixedly connected to the slide plate, a clamping assembly is provided on the placement seat, and a fin body is clamped and installed on the placement seat through the clamping assembly; A fixing frame is fixedly connected to the base frame. A guide rod is fixedly connected to the fixing frame. A sliding seat is slidably connected to the guide rod. A driving member is installed on the fixing frame. There are two sliding seats symmetrically arranged. A connecting frame is fixedly connected between the two sliding seats. An arc-shaped frame is installed on the end side of the connecting frame. A welding mechanism is installed on the arc-shaped frame. The welding mechanism includes a movable seat slidably connected to the arc-shaped frame. A concave-shaped frame is fixedly connected to the movable seat. A mounting plate is fixedly connected to the concave-shaped frame. An infrared scanner is installed on the mounting plate. A groove is formed on the mounting plate. A cylinder is slidably connected in the groove. A screw rod is slidably lifted in the cylinder. A welding torch is fixedly connected to the bottom of the screw rod.

[0007] Further, the docking assembly includes an electric push rod fixedly connected to the base frame. The electric push rod is hinged to the sliding plate. There are two sliding plates symmetrically arranged. A connecting rod is hinged between the two sliding plates. A rotating plate is hinged to the end side of the connecting rod. A support column is rotatably connected inside the rotating plate. The support column is fixedly connected to the base frame.

[0008] Further, the clamping assembly includes a double-shaft cylinder fixedly connected to the placing seat. The output ends on both sides of the double-shaft cylinder are slidably connected with piston rods. A mounting frame is fixedly connected to the end side of the piston rod. A connecting block is fixedly connected to the mounting frame. A clamping frame is hinged to the connecting block. A clamping wheel is installed on the clamping frame. The clamping wheel is in contact with the side wall of the tail fin body.

[0009] Further, a notch is formed on the placing seat. The mounting frame is slidably embedded in the notch.

[0010] Further, the driving member includes a motor I fixedly connected to the side wall of the fixing frame. A lead screw is fixedly connected to the output end of the motor I. The sliding seat is threadedly connected to the lead screw.

[0011] Further, arc-shaped grooves are formed on both the inner and outer walls of the arc-shaped frame. A plurality of tooth grooves are formed on the outer wall of the arc-shaped frame.

[0012] Further, a motor II is fixedly connected to the movable seat. A rotating shaft is fixedly connected to the output end of the motor II. The rotating shaft is rotatably connected to the movable seat. A gear I is fixedly sleeved on the rotating shaft. The gear I meshes with the tooth grooves. A plurality of fixed shafts are installed on the movable seat. A limiting wheel is rotatably connected to each of the plurality of fixed shafts. The limiting wheel is in sliding contact with the arc-shaped groove.

[0013] Further, an electric push rod one and an electric push rod two are fixedly connected to the mounting plate. The output end of the electric push rod one is fixedly connected with a fixing block one, and the output end of the electric push rod two is fixedly connected with a fixing block two. A limiting plate one is fixedly connected to the side of the fixing block one, and a limiting plate two is fixedly connected to the side of the fixing block two. A toothed plate one is fixedly connected to the bottom surface of the limiting plate one, and a toothed plate two is fixedly connected to the bottom surface of the limiting plate two.

[0014] Further, a gear two is rotatably connected to the bottom of the cylinder. The gear two is threadedly connected to the screw rod. Both the toothed plate one and the toothed plate two are meshed with the gear two. An anti-falling plate is fixedly sleeved outside the cylinder, and the anti-falling plate is in sliding fit with the mounting plate.

[0015] Further, two limiting grooves are symmetrically formed in the mounting plate. The limiting plate one and the limiting plate two are respectively in sliding connection with the two limiting grooves.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can quickly complete the precise positioning and clamping of the tail fin piece, cooperate with the automated docking process, greatly improve the flow efficiency of the welding process, and effectively eliminate the positioning deviation caused by manual operation; the adaptive fitting design of the clamping wheel and the curved surface of the tail fin piece, combined with the central positioning function of the placement seat, can limit the position offset of the tail fin piece during welding within an effective range, ensure the position accuracy of the weld seam, and improve the consistency of welding quality; it can automatically adjust the clamping angle and force according to the different curved surface contours of the tail fin piece body, and can be compatible with the welding of various specifications and models of tail fin pieces without replacing hardware, adapting to the assembly requirements of different sizes of tail fin pieces, and the equipment has strong versatility; whether it is the initial welding distance setting or the distance change caused by wear during the welding process, the system can automatically achieve precise adjustment of the height of the welding torch, effectively avoiding problems such as wire melting, torch slag sticking, and unstable arc caused by distance deviation, and ensuring the stability and reliability of welding quality; the infrared scanner carried can real-time monitor the position of the welding torch. Once it detects a path deviation caused by reasons such as slag blockage, it can quickly drive the welding torch to quickly reset, ensure the weld seam position is accurate and error-free, prevent the tail fin piece from being damaged due to welding misalignment, and greatly improve the product qualification rate; the welding torch can flexibly switch between the arc trajectory and the linear track to achieve fully automated welding of the top surface, side surface, and bottom surface of the tail fin piece, ensure the stability of the welding torch during complex space movement, and meet the multi-directional welding requirements of the aerospace tail fin piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the overall side view structural schematic diagram of the present invention; Figure 3 is the structural schematic diagram of the docking component of the present invention; Figure 4 Schematic diagram of the connection and installation structure between the clamping component and the placement seat of the present invention; Figure 5 Schematic diagram of the structure of the clamping component of the present invention; Figure 6 Schematic diagram of the installation structure between the welding mechanism and the arc-shaped frame of the present invention; Figure 7 For the present invention Figure 6 Top view structure diagram; Figure 8 Schematic diagram of the structure of the welding mechanism of the present invention; Figure 9 For the present invention Figure 8 Top view structure diagram; Figure 10 Schematic diagram of the structure of some components of the welding mechanism of the present invention.

[0018] In the figure: 1, base frame; 2, slide rail; 3, sliding plate; 4, placement seat; 41, notch; 5, docking component; 51, electric push rod; 52, connecting rod; 53, rotating plate; 54, support pillar; 6, tail fin body; 7, clamping component; 71, double-axis cylinder; 72, piston rod; 73, mounting frame; 74, connecting block; 75, clamping frame; 76, clamping wheel; 8, fixing frame; 9, guide rod; 10, sliding seat; 11, driving part; 110, motor one; 111, lead screw; 12, connecting frame; 13, arc-shaped frame; 131, arc-shaped groove; 132, tooth groove; 14, welding mechanism; 141, movable seat; 142, motor two; 143, rotating shaft; 144, gear one; 145, fixed shaft; 146, limiting wheel; 147, concave-shaped frame; 148, mounting plate; 481, limiting groove; 482, groove; 483, electric push column one; 484, fixing block one; 485, limiting plate one; 486, tooth plate one; 487, electric push column two; 488, fixing block two; 489, limiting plate two; 890, tooth plate two; 891, gear two; 892, cylinder; 893, anti-falling plate; 894, screw; 895, welding torch; 149, infrared scanner. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] In order to solve the technical problem that when butt - welding the fin pieces, due to the shape setting of the fin pieces themselves, it is easy to shift during welding, resulting in welding deviation and thus reducing the welding quality of the fin pieces, as Figures 1 - 5 shown, the following preferred technical solutions are provided: A butt - welding tooling for aerospace fin piece welding and processing, including a base frame 1. A slide rail 2 is fixedly connected to the base frame 1. A slide plate 3 is slidably connected to the slide rail 2. A docking component 5 is installed on the base frame 1 for docking two fin piece bodies 6. A placement seat 4 is fixedly connected to the slide plate 3. A clamping component 7 is provided on the placement seat 4 for clamping and fixing the fin piece body 6. The fin piece body 6 is clamped and installed on the placement seat 4 through the clamping component 7.

[0021] The docking component 5 includes an electric push rod 51 fixedly connected to the base frame 1. The electric push rod 51 is hinged to the slide plate 3. There are two symmetric slide plates 3. A connecting rod 52 is hinged to the two slide plates 3. A rotating plate 53 is hinged to the end side of the connecting rod 52. A support column 54 is rotatably connected inside the rotating plate 53. The support column 54 is fixedly connected to the base frame 1. This design can ensure that the fin piece body 6 can be docked smoothly and accurately, effectively avoiding docking deviation caused by uneven spacing adjustment.

[0022] The clamping component 7 includes a double - axis cylinder 71 fixedly connected to the placement seat 4. The output ends on both sides of the double - axis cylinder 71 are slidably connected with piston rods 72. An installation frame 73 is fixedly connected to the end side of the piston rod 72. A connecting block 74 is fixedly connected to the installation frame 73. A clamping frame 75 is hinged to the connecting block 74. A clamping wheel 76 is installed on the clamping frame 75. The clamping wheel 76 is in contact with the side wall of the fin piece body 6. The clamping wheel 76 is made of a special flexible material, which can not only closely fit the complex curved side wall of the fin piece body 6, but also avoid damaging the surface of the fin piece while providing sufficient clamping force. A notch 41 is opened on the placement seat 4. The installation frame 73 is slidably embedded in the notch 41. The notch 41 provides a space for the installation frame 73 to slide in - line, restricting the movement track of the installation frame 73 so that it can only slide in a specific direction within the range of the notch 41, thereby ensuring the stability and accuracy of the clamping component 7 during operation and ensuring that the fin piece body 6 will not be displaced due to external forces during the welding process.

[0023] Specifically, as Figures 1 - 3As shown, when the tooling is used to butt-weld the tail wing body 6, the electric push rod 51 is first started. Since the slide plate 3 is hinged to the electric push rod 51, when the electric push rod 51 is extended, the slide plate 3 on its end side will slide outward along the slide rail 2. Since the two slide plates 3 are hinged to the rotating plate 53 through the connecting rod 52, when one side of the slide plate 3 moves, the connecting rod 52 rotates synchronously therewith, thereby driving the rotating plate 53 to rotate around the support 54. When the rotating plate 53 rotates, the slide plate 3 hinged at the other end thereof will also move synchronously horizontally along the slide rail 2, thereby finally realizing that the two slide plates 3 drive the top fixed placement seat 4 to separate from each other. After the placement seat 4 is completely separated, the electric push rod 51 is closed.

[0024] When the locking cam 73 is in the state of being lifted up, the locking cam 73 will be in the state of being lifted up, and the locking cam 73 will be in the state of being lifted up, so that the locking cam 73 can be locked to the locking cam 73 when the locking cam 73 is in the state of being lifted up. The clamping frames 75 on both sides move inward synchronously to ensure that the tail wing body 6 is stably clamped at the center position to prepare for subsequent welding operations.

[0025] After the tail wing body 6 is firmly clamped, the electric push rod 51 is started again. The electric push rod 51 drives the slide plate 3 to slide back along the slide rail 2. As one side of the slide plate 3 moves back, the connecting rod 52 rotates and drives the rotating plate 53 to rotate around the support 54, so that the slide plates 3 on both sides slide toward each other along the slide rail 2. During the continuous movement of the slide plate 3, the top placement seat 4 will drive the clamped tail wing body 6 to dock until the two tail wing body 6 are accurately fitted, and the subsequent welding process can be carried out.

[0026] Through the above-mentioned arrangement, the tail wing piece body 6 can be firmly clamped during the welding process, which avoids manual adjustment of the spacing, thereby improving the operating efficiency and reducing the risk of deviation in the tail wing piece docking due to spacing errors. At the same time, it can ensure that when welding tail wing pieces of different models, the curved surface structures of different tail wing piece bodies 6 can be tightly fitted to prevent displacement due to loosening during the welding process, further offsetting the thermal stress and mechanical vibration generated during welding, thereby ensuring the welding quality and the accuracy of the tail wing piece finished product.

[0027] To solve the technical problems in welding operations, such as the mechanical fatigue wear of the welding torch 895 due to its long-term cooperation with the arc-shaped frame 13, resulting in inaccurate welding positions, and the interference of foreign objects blocking the preset movement path of the welding torch 895, causing welding displacement deviation and inaccurate fusion distance, as Figures 1 - 2 , Figures 6 - 10 shown, the following preferred technical solutions are provided: A fixed frame 8 is fixedly connected to the base frame 1. A guide rod 9 is fixedly connected to the fixed frame 8. A sliding seat 10 is slidably connected to the guide rod 9. A driving member 11 is installed on the fixed frame 8. There are two symmetric sliding seats 10. A connecting frame 12 is fixedly connected between the two sliding seats 10. An arc-shaped frame 13 is installed on the end side of the connecting frame 12. A welding mechanism 14 is installed on the arc-shaped frame 13. The welding mechanism 14 includes a movable seat 141 slidably connected to the arc-shaped frame 13. A concave-shaped frame 147 is fixedly connected to the movable seat 141. The concave-shaped frame 147 is provided with a through hole for facilitating the lifting of the screw rod 894 to avoid hindering the lifting adjustment of the screw rod 894. An installation plate 148 is fixedly connected to the concave-shaped frame 147. An infrared scanner 149 is installed on the installation plate 148, which can scan the welding position and surface contour of the tail fin in real time and feed the obtained data back to the control system to provide data support for the accurate positioning of the welding torch 895. A groove 482 is formed on the installation plate 148. A cylinder 892 is slidably connected in the groove 482. A screw rod 894 is slidably lifted in the cylinder 892. It should be noted that when the screw rod 894 is lifted or lowered, the rotation direction of the second gear 891 can be adjusted according to the requirements to meet the needs. The bottom of the screw rod 894 is fixedly connected to the welding torch 895.

[0028] The driving member 11 includes a first motor 110 fixedly connected to the side wall of the fixed frame 8. The output end of the first motor 110 is fixedly connected to a lead screw 111. The sliding seat 10 is threadedly connected to the lead screw 111. Arc-shaped grooves 131 are formed on both the inner and outer walls of the arc-shaped frame 13. A plurality of tooth grooves 132 are formed on the outer wall of the arc-shaped frame 13.

[0029] A second motor 142 is fixedly connected to the movable seat 141. The output end of the second motor 142 is fixedly connected to a rotating shaft 143. The rotating shaft 143 is rotatably connected to the movable seat 141. A first gear 144 is fixedly sleeved on the rotating shaft 143. The first gear 144 meshes with the tooth grooves 132. A plurality of fixed shafts 145 are installed on the movable seat 141. A limiting wheel 146 is rotatably connected to the plurality of fixed shafts 145. The limiting wheel 146 is in sliding fit with the arc-shaped groove 131.

[0030] A power push rod one 483 and a power push rod two 487 are fixedly connected to the mounting plate 148. A fixing block one 484 is fixedly connected to the output end of the power push rod one 483, and a fixing block two 488 is fixedly connected to the output end of the power push rod two 487. A limiting plate one 485 is fixedly connected to the side of the fixing block one 484, and a limiting plate two 489 is fixedly connected to the side of the fixing block two 488. A toothed plate one 486 is fixedly connected to the bottom surface of the limiting plate one 485, and a toothed plate two 890 is fixedly connected to the bottom surface of the limiting plate two 489.

[0031] A gear two 891 is rotatably connected to the bottom of the cylinder 892. The gear two 891 is threadedly connected to the screw rod 894. Both the toothed plate one 486 and the toothed plate two 890 are meshed with the gear two 891. An anti-falling plate 893 is fixedly sleeved outside the cylinder 892. The anti-falling plate 893 is in sliding fit with the mounting plate 148. Two limiting grooves 481 are symmetrically formed on the mounting plate 148. The limiting plate one 485 and the limiting plate two 489 are respectively in sliding connection with the two limiting grooves 481.

[0032] Specifically, when the two tail fin bodies 6 are butted and need to be welded, the welding distance between the welding torch 895 and the tail fin body 6 is adjusted according to requirements. During the adjustment, the power push rod one 483 is synchronously extended and the power push rod two 487 is contracted. When the power push rod one 483 extends, the fixing block one 484 on its side synchronously drives the limiting plate one 485 fixed to its side to move forward along the limiting groove 481. When the power push rod two 487 contracts, the fixing block two 488 on its side synchronously drives the limiting plate two 489 fixed to its side to move backward along the limiting groove 481, so that the toothed plate one 486 on the limiting plate one 485 and the toothed plate two 890 on the limiting plate two 489 move horizontally in different directions. Since the toothed plate one 486 and the toothed plate two 890 are meshed with the gear two 891, as the toothed plate one 486 and the toothed plate two 890 move in opposite directions synchronously, the gear two 891 will rotate around the cylinder 892 under the meshing action. Since the gear two 891 is threadedly connected to the screw rod 894 and there is an activity space for the screw rod 894 to lift inside the cylinder 892, therefore, when the gear two 891 rotates and is in threaded cooperation, the screw rod 894 will move up and down inside the cylinder 892 under the action of the thread, and the welding torch 895 fixedly installed with the screw rod 894 will perform a lifting movement according to requirements, so that the welding torch 895 can adjust the welding distance according to the thickness of the tail fin body 6.

[0033] After adjusting to a suitable distance, start motor 110 to drive the lead screw 111 to rotate. Since the sliding seat 10 is threadedly connected to the lead screw 111 and is slidably connected to the guide rod 9, when the lead screw 111 rotates, the sliding seat 10 is in threaded cooperation with it. Under the action of the thread, the rotational motion of the lead screw 111 will be converted into the horizontal motion of the sliding seat 10, causing the sliding seat 10 to move horizontally along the guide rod 9. Since the sliding seat 10 is fixedly connected to the connecting frame 12 and the arc-shaped frame 13, the arc-shaped frame 13 will move horizontally synchronously, and the welding torch 895 installed on the arc-shaped frame 13 will perform welding treatment synchronously along the docking position of the fin body 6.

[0034] During the welding process, as Figures 8 - 10 shown, when using this tooling for welding for a long time, the sliding between the welding mechanism 14 and the arc-shaped frame 13 will cause wear. Due to the wear, the welding distance between the welding torch 895 and the fin body 6 will be shortened or lengthened. Once the welding distance changes, it will affect the butt welding performance of the fin body 6. During the entire welding process, the infrared scanner 149 carried by the system continuously scans and monitors. Once it detects that the welding distance exceeds the preset threshold, it immediately sends a control command to the electric push rod 1 483 and the electric push rod 2 487. The electric push rod 1 483 and the electric push rod 2 487 will immediately make targeted adjustments after receiving the electrical signal.

[0035] During adjustment, simultaneously start the electric push rod 1 483 to extend and the electric push rod 2 487 to contract. When the electric push rod 1 483 extends, the fixing block 1 484 on its end side will synchronously drive the limiting plate 1 485 fixed to the end side to move forward along the limiting groove 481. When the electric push rod 2 487 contracts, the fixing block 2 488 on its end side will synchronously drive the limiting plate 2 489 fixed to the end side to move backward along the limiting groove 481, causing the toothed plate 1 486 on the limiting plate 1 485 and the toothed plate 2 890 on the limiting plate 2 890 to move horizontally in different directions. Since the toothed plate 1 486 and the toothed plate 2 890 are meshed with the gear 2 891, as the toothed plate 1 486 and the toothed plate 2 890 move in opposite directions synchronously, the gear 2 891 will rotate around the cylinder 892 under the meshing action. Since the gear 2 891 is threadedly connected to the screw rod 894 and there is a cavity in the cylinder 892 to facilitate the lifting of the screw rod 894, therefore, when the gear 2 891 rotates and is in threaded cooperation, the screw rod 894 will move up and down in the cylinder 892 under the action of the thread, and the welding torch 895 fixedly installed with the screw rod 894 will perform a lifting motion according to the requirements, enabling the welding torch 895 to make targeted adjustments to shorten or lengthen the welding distance according to the thickness of the fin body 6, so that during welding, there will be no phenomena such as overheating and fusing of the welding wire caused by too close a welding distance, slag sticking to the nozzle of the welding torch 895, and a decrease in arc stability, slag spatter, incomplete welding, and pores generated by weld oxidation caused by too far a welding distance.

[0036] It should be noted that welding slag will be generated during the welding process, and the generated welding slag will be regularly cleaned manually to avoid, as much as possible, the welding slag getting stuck in the arc-shaped frame 13, which may cause the welding mechanism 14 to fail to move normally along the preset path for welding, reducing the occurrence of stagnation. However, during the welding process, the welding slag will splash, and if not careful, the welding slag will get stuck on the arc-shaped frame 13.

[0037] If, during the welding process, the welding slag splashes and accidentally gets stuck on the arc-shaped frame 13, it will block and interfere with the preset movement path of the welding torch 895. At this time, the welding position of the welding torch 895 will change, and the weld seam on the tail fin piece body 6 will also change accordingly, causing the welding position to be misaligned, and further resulting in damage to the tail fin piece body 6, affecting its use.

[0038] Therefore, during the welding process, if the above problems occur, such as Figures 7 - 10 As shown, during the welding process, if it is found that the welding path of the welding torch 895 is deviated or distorted, the infrared scanner 149 will immediately scan and sense it, and then convert the scanned data into an electrical signal and transmit it to the electric push rod one 483 and the electric push rod two 487. Then, after receiving the electrical signal, the electric push rod one 483 and the electric push rod two 487 will be immediately activated. Since the electric push rod one 483, the fixed block one 484, the limiting plate one 485, and the toothed plate one 486 are fixedly connected, and the electric push rod two 487, the fixed block two 488, the limiting plate two 489, and the toothed plate two 890 are fixedly connected, the electric push rod one 483 and the electric push rod two 487 will drive the fixed block one 484 and the fixed block two 488 to move horizontally synchronously and in the same direction after being activated. The limiting plate one 485 and the limiting plate two 489 will also move horizontally along the limiting groove 481 synchronously, and the toothed plates one 486 and two 890 at their bottoms will also move horizontally synchronously. Since the gear two 891 meshes with the toothed plates one 486 and two 890, the toothed plates one 486 and two 890 will cause the gear two 891 to move horizontally synchronously during the horizontal movement process, making the cylinder 892 and the anti-falling plate 893 on the gear two 891 move horizontally along the groove 482 synchronously. And the anti-falling plate 893 can only slide in the groove 482 and cannot rotate. The welding torch 895 installed below the gear two 891 by the screw 894 moves horizontally synchronously, causing the welding position of the welding torch 895 to change. Through such a design, the welding torch 895 can dynamically adjust in real time according to the weld seam position deviation scanned by the infrared scanner 149 in a timely manner, correct the deviation in a timely manner. During the welding process, this automatic adjustment function can effectively resist interference factors such as welding slag blockage, avoid the welding torch 895 deviating from the preset movement path, and thus ensure that the tail fin piece body 6 remains precisely aligned during butt welding, improving the welding quality.

[0039] After the welding of the top surface of the fin piece body 6 is completed, it is necessary to perform welding treatment on the side and bottom surfaces of the fin piece body 6. Therefore, when it is necessary to adjust the welding position of the welding torch 895 after welding is completed, the second motor 142 on the movable seat 141 is started. After the second motor 142 on the movable seat 141 is started, the rotating shaft 143 at its output end will drive the first gear 144 to rotate. Since a plurality of tooth grooves 132 are formed on the outer wall of the arc-shaped frame 13, and the first gear 144 meshes with the tooth grooves 132 on the outer wall of the arc-shaped frame 13, under the action of meshing, the rotation of the first gear 144 will be converted into the sliding movement of the movable seat 141 along the arc-shaped frame 13, so that the movable seat 141 can slide along the arc-shaped frame 13, enabling the welding torch 895 to perform welding treatment on the side surface of the fin piece body 6. After the side surface welding is completed, continue to drive the movable seat 141 to move along the arc-shaped frame 13. When the movable seat 141 drives the welding torch 895 to move to the bottom surface position of the fin piece body 6, stop driving, and then start the first motor 110. The first motor 110 drives the lead screw 111 to rotate, and the sliding seat 10 that is threadedly engaged with the lead screw 111 synchronously drives the connecting frame 12 and the arc-shaped frame 13 to move horizontally. The welding torch 895 installed on the arc-shaped frame 13 moves horizontally synchronously to perform welding treatment on the bottom surface of the fin piece body 6, so as to perform comprehensive welding on the fin piece body 6.

[0040] Meanwhile, since the limiting wheels 146 on the movable seat 141 are in sliding fit with the arc-shaped grooves 131 on the inner and outer walls of the arc-shaped frame 13, the setting of the arc-shaped grooves 131 not only limits the movement track of the movable seat 141, making it can only slide along the arc-shaped frame 13, but also plays a role in stable support and guidance, ensuring that the movable seat 141 remains stable during the arc movement process, and further realizing the precise movement of the welding torch 895 on the arc track to adapt to the welding requirements of different parts of the fin piece body 6.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butt joint tooling for welding and processing of aerospace tail fin pieces, including a base frame (1), characterized in that: A slide rail (2) is fixedly connected to the base frame (1), a slide plate (3) is slidably connected to the slide rail (2), a docking component (5) is installed on the base frame (1), a placement seat (4) is fixedly connected to the slide plate (3), a clamping component (7) is provided on the placement seat (4), and a fin body (6) is clamped and installed on the placement seat (4) through the clamping component (7); A fixed frame (8) is fixedly connected to the base frame (1), a guide rod (9) is fixedly connected to the fixed frame (8), a sliding seat (10) is slidably connected to the guide rod (9), a driving member (11) is installed on the fixed frame (8), there are two sliding seats (10) symmetrically, a connecting frame (12) is fixedly connected between the two sliding seats (10), an arc-shaped frame (13) is installed on the end side of the connecting frame (12), a welding mechanism (14) is installed on the arc-shaped frame (13), the welding mechanism (14) includes a movable seat (141) slidably connected to the arc-shaped frame (13), a concave-shaped frame (147) is fixedly connected to the movable seat (141), a mounting plate (148) is fixedly connected to the concave-shaped frame (147), an infrared scanner (149) is installed on the mounting plate (148), a groove (482) is formed in the mounting plate (148), a cylinder (892) is slidably connected in the groove (482), a screw rod (894) is slidably lifted in the cylinder (892), and a welding torch (895) is fixedly connected to the bottom of the screw rod (894).

2. The docking tooling for welding and processing of aerospace tail fin sheets according to claim 1, characterized in that: The docking component (5) includes an electric push rod (51) fixedly connected to the base frame (1), the electric push rod (51) is hinged to the slide plate (3), there are two slide plates (3) symmetrically, a connecting rod (52) is hinged to the two slide plates (3), a rotating plate (53) is hinged to the end side of the connecting rod (52), a support column (54) is rotatably connected inside the rotating plate (53), and the support column (54) is fixedly connected to the base frame (1).

3. A butt fixture for welding and processing aerospace tail fins according to claim 1, characterized in that: The clamping component (7) includes a double-axis cylinder (71) fixedly connected to the placement seat (4), piston rods (72) are slidably connected to the output ends on both sides of the double-axis cylinder (71), a mounting frame (73) is fixedly connected to the end side of the piston rod (72), a connecting block (74) is fixedly connected to the mounting frame (73), a clamping frame (75) is hinged to the connecting block (74), a clamping wheel (76) is installed on the clamping frame (75), and the clamping wheel (76) is in contact with the side wall of the fin body (6).

4. A butt joint tool for welding and processing aerospace tail fin pieces according to claim 3, characterized in that: A notch (41) is formed in the placement seat (4), and the mounting frame (73) is slidably embedded in the notch (41).

5. A butt joint tooling for welding and processing of aerospace tail fin sheets according to claim 1, characterized in that: The driving member (11) includes a motor one (110) fixedly connected to the side wall of the fixed frame (8), a lead screw (111) is fixedly connected to the output end of the motor one (110), and the sliding seat (10) is threadedly connected to the lead screw (111).

6. The butt joint tooling for welding and processing of an aerospace fin according to claim 1, characterized in that: Arc-shaped grooves (131) are formed on both the inner and outer walls of the arc-shaped frame (13), and a plurality of tooth grooves (132) are formed on the outer wall of the arc-shaped frame (13).

7. The butt joint tooling for welding and processing of aerospace tail fin sheets according to claim 6, characterized in that: A second motor (142) is fixedly connected to the movable seat (141). The output end of the second motor (142) is fixedly connected to a rotating shaft (143). The rotating shaft (143) is rotatably connected to the movable seat (141). A first gear (144) is fixedly sleeved on the rotating shaft (143). The first gear (144) meshes with the tooth groove (132). A plurality of fixed shafts (145) are installed on the movable seat (141). A limiting wheel (146) is rotatably connected to the plurality of fixed shafts (145). The limiting wheel (146) is in sliding fit with the arc groove (131).

8. The docking tooling for welding and processing of aerospace fin pieces according to claim 7, characterized in that: A first electric push rod (483) and a second electric push rod (487) are fixedly connected to the mounting plate (148). The output end of the first electric push rod (483) is fixedly connected to a first fixing block (484). The output end of the second electric push rod (487) is fixedly connected to a second fixing block (488). A first limiting plate (485) is fixedly connected to the side of the first fixing block (484). A second limiting plate (489) is fixedly connected to the side of the second fixing block (488). A first toothed plate (486) is fixedly connected to the bottom surface of the first limiting plate (485). A second toothed plate (890) is fixedly connected to the bottom surface of the second limiting plate (489).

9. The butt joint tooling for welding and processing of aerospace tail fin sheets according to claim 8, characterized in that: A second gear (891) is rotatably connected to the bottom of the cylinder (892). The second gear (891) is threadedly connected to the screw rod (894). Both the first toothed plate (486) and the second toothed plate (890) mesh with the second gear (891). An anti-falling plate (893) is fixedly sleeved outside the cylinder (892). The anti-falling plate (893) is in sliding fit with the mounting plate (148).

10. The butt joint tooling for welding and processing of aerospace tail fin sheets according to claim 9, characterized in that: Two limiting grooves (481) are symmetrically formed in the mounting plate (148). The first limiting plate (485) and the second limiting plate (489) are respectively in sliding connection with the two limiting grooves (481).

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