Aircraft engine cover welding device and processing method thereof

Abstract

The present invention relates to the field of aircraft processing technology, and discloses an aircraft engine cover welding device and a processing method thereof. The device adopts a flip-type pedestal installation structure, which cooperates with a transport pedestal that moves on the upper part of the flip support, so as to conveniently and quickly complete the loading and unloading installation of the engine cover workpiece. The device adopts an inner side expansion support type workpiece positioning structure, so as to clamp and support the cylinder body and the head seat part of the engine cover from the inside respectively, and the clamping and positioning are fast and accurate. The device can quickly and conveniently complete the positioning and docking of the engine cover cylinder body and the head seat part in cooperation with the lifting and lowering adjustment of the positioning cylinder seat, which is beneficial to improving the welding positioning efficiency and welding accuracy of the device. In the adjustment and positioning stage, the inner side of the engine cover is rolled supported by the support guide wheel, which can effectively facilitate the clamping and positioning adjustment of the engine cover structure. After the positioning adjustment, the support guide wheel moves backward and retracts, and the engine cover is supported and limited by the edge of the inner support clamp seat, which can facilitate the positioning adjustment of the engine cover workpiece and effectively improve the clamping and positioning accuracy of the engine cover.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft processing, and in particular to an aircraft engine cover welding device and a processing method thereof. Background Art

[0002] With the development of science and technology, aircraft and aero-engine products are constantly being upgraded. Their structural designs are becoming increasingly complex, and manufacturing precision is becoming increasingly high, placing higher demands on manufacturing technology. In recent years, due to the development of laser equipment and processes, the share of laser welding in the aviation manufacturing field has continued to expand. The engine cover, as a working protective structure of the aircraft power structure, is installed on the outside of the aircraft engine to provide shielding and protection for the engine, and is a key working component of the aircraft.

[0003] In terms of structure, the aircraft engine hood is a cylindrical hood type structure, which is mainly composed of a cylinder ring part and a head seat part. Due to the cylindrical seat type structure, a vertical positioning clamping installation method is often used during welding. Since the cylindrical structure of the engine hood is difficult to clamp and position, and the clamping and docking accuracy is difficult to ensure, and since the engine hood has a high axial volume, the installation and unloading work is very inconvenient. Therefore, an aircraft engine hood welding device and a processing method thereof are proposed. Summary of the Invention

[0004] The object of the present invention is to provide an aircraft engine cover welding device and a processing method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an aircraft engine cover welding device, comprising a clamping mechanism, a welding mechanism and a loading mechanism;

[0006] The cam is driven by the lower clamping motor and the upper clamping motor to move upwards and downwards to move the upper clamping motor toward the support frame, and the cam is driven by the lower clamping motor to move the upper clamping motor toward the support frame.

[0007] The welding mechanism is used for welding the hood workpiece, and includes a welding support, a transverse drive motor, a vertical drive motor, and a laser welding head. The welding support is movably mounted on the side of the bottom bracket by the transverse drive motor, and the laser welding head is movably raised and lowered by the vertical drive motor and mounted on the edge of the welding support.

[0008] The loading mechanism is used for supporting the loading and transfer of the engine hood. The loading mechanism includes a transport platform, a lifting plate seat, a plate seat driving cylinder and a supporting roller. The transport platform is horizontally movably installed on the upper part of the bottom bracket, and the supporting roller follows the lifting plate seat and is driven by the plate seat driving cylinder to be movable and lifted and installed on the upper part of the transport platform.

[0009] Preferably, the above-mentioned flip support is installed on the upper rear side of the bottom bracket through a double-sided rotating shaft support fixed axis flip, the flip drive motor is fixedly installed on the side of the bottom bracket, the rotating shaft end of the flip drive motor is fixedly installed with a driving gear, the edge of the flip support is provided with a semicircular gear seat, and the driving gear is meshed with the tooth groove portion of the semicircular gear seat.

[0010] Preferably, the above-mentioned support turntable is fixedly mounted on the upper part of the flip support, the rotation drive motor is fixedly mounted on the rear part of the flip support, and a transmission gear is fixedly mounted on the shaft end of the rotation drive motor, and the transmission gear is meshed with the tooth groove part of the lower part of the support turntable.

[0011] Preferably, the above-mentioned lower positioning cylinder seat is fixedly installed on the upper part of the supporting turntable, and the lower part of the upper positioning cylinder seat is evenly and circularly fixed with lifting guide columns, and the lower part of the lifting guide columns is movably plugged into the socket part on the upper part of the upper positioning cylinder seat, and the lifting drive cylinder is fixedly installed on the inner side of the cavity in the middle part of the lower positioning cylinder seat, and the lower part of the upper positioning cylinder seat is fixedly connected to the push rod end of the lifting drive cylinder.

[0012] Preferably, a drive disc seat and a drive arm are provided inside the lower positioning cylinder seat and the upper positioning cylinder seat, and the two groups of drive disc seats are rotatably installed inside the lower positioning cylinder seat and the upper positioning cylinder seat respectively. The lower clamping seat drive motor and the upper clamping seat drive motor are respectively installed with the two groups of drive disc seats through rotating shafts.

[0013] Preferably, the above-mentioned driving support arms are provided in plurality, and several of the driving support arms are evenly distributed in a circular shape. The driving support arms are slidingly engaged with the guide grooves provided on the sides of the lower positioning cylinder seat and the upper positioning cylinder seat. An arc-shaped tooth seat is provided at the end of the driving support arm, and the arc-shaped tooth seat is slidingly engaged with the spiral groove provided on the upper part of the driving disc seat.

[0014] Preferably, the end of the above-mentioned inner support clamp is fixedly installed with the end of the driving support arm by means of slot-engaging and matching bolts, and the support guide wheels are arranged in pairs, and the inner sides of the mounting slots arranged at both ends of the inner support clamp are respectively slidably engaged with guide wheel connecting blocks, and the support guide wheel is rotatably installed on the upper part of the guide wheel connecting block by supporting the fixed axis through a rotating shaft, and a spring is installed to abut against the mounting side of the guide wheel connecting block, and limiting bolts are installed on both sides of the middle part of the guide wheel connecting block, and the lower end of the limiting bolt is slidably engaged with the limiting guide groove arranged in the mounting slot, and a clamping pad is fixedly installed on the middle part of the outer side of the inner support clamp.

[0015] Preferably, a transverse rail seat is provided on the rear side of the above-mentioned bottom bracket, and the lower part of the welding support is slidably engaged with the rail seat part of the upper part of the transverse rail seat for support and installation, the transverse drive motor is fixedly installed on the side of the transverse rail seat, and a driving screw is installed on the rotating shaft end of the transverse drive motor, and the driving screw is threadedly installed with the screw hole part of the lower part of the welding support, and a vertical rail seat is fixedly installed on the inner side of the welding support, and the rear support part of the laser welding head is slidably engaged with the rail seat part of the vertical rail seat, and the vertical drive motor is fixedly installed on the upper part of the welding support, and a transmission screw is installed on the rotating shaft end of the vertical drive motor, and the transmission screw is threadedly installed with the screw hole part of the support part of the laser welding head.

[0016] Preferably, a supporting rail wheel is installed at the lower part of the above-mentioned transport platform through a rotating shaft support, and the supporting rail wheel is installed with a rolling support on the track part at the front of the bottom bracket, and a lifting guide column is fixedly installed on the upper part of the lifting plate seat, and the lifting plate seat is movably installed in the interior of the lifting groove seat provided on the upper part of the transport platform through the lifting guide column support, and a plurality of plate seat driving cylinders are provided, and the plate seat driving cylinder is fixedly installed at the lower part of the transport platform, and the push rod end of the plate seat driving cylinder is fixedly installed at the lower part of the lifting plate seat, and the two groups of support rollers are rotatably installed on the upper parts of the two groups of lifting guide columns through rotating shaft support.

[0017] The present invention also provides a method for processing an aircraft engine cover welding device, comprising the following steps:

[0018] S1, loading and positioning, before processing, the cylinder ring part and the head seat part of the hood workpiece are supported and installed on the upper part of the support roller above the transport platform, and then the device is switched to loading mode, and the support turntable is turned down 90 degrees by the rotating drive motor, so that the lower positioning cylinder seat and the upper positioning cylinder seat are in a horizontal state, and then the lifting plate seat is driven by the plate seat driving cylinder to adjust the support height of the hood workpiece so that the hood workpiece and the positioning cylinder seat are in a coaxial state, and then the hood workpiece is installed on the upper part of the positioning cylinder seat in a set manner by pushing, and then the inner support clamp is driven by the lower clamp seat driving motor and the upper clamp seat driving motor to expand, and the inner side of the hood workpiece is pre-supported and limited by the support guide wheel, and then the position of the hood workpiece is adjusted by lifting and then the inner support clamp is used to limit and support the inner side of the hood workpiece by outward expansion, thereby completing the loading and positioning of the hood workpiece;

[0019] S2, flip loading, after completing the loading positioning, the support turntable is flipped upward 90 degrees by rotating the drive motor, so that the lower positioning cylinder seat and the upper positioning cylinder seat are in a vertical state, completing the flip loading of the hood workpiece;

[0020] S3, positioning welding, after completing the loading, the upper positioning cylinder seat is driven downward by the lifting drive cylinder to make the cylinder ring part and the head seat part of the hood workpiece close to the docking, and the position of the head seat part of the hood workpiece is adjusted and corrected for the second time by observing the interface and coordinating the retraction of the upper positioning cylinder seat. After completion, the adjusted head seat part of the hood workpiece is limited and fixed by the internal support clamping, and the welding side of the cylinder ring part and the head seat part of the hood workpiece are closely contacted by the falling of the lifting drive cylinder. Then, the laser welding head is displacement-driven by the cooperation of the horizontal drive motor and the vertical drive motor so that the laser welding head is on the welding side of the hood workpiece. Then, the support turntable is driven by the rotating drive motor to drive the hood workpiece to rotate axially. During the process, the laser welding head completes the docking welding of the cylinder ring part and the head seat part of the hood workpiece;

[0021] S4. Flip and unload. After welding is completed, the support turntable is flipped downward 90 degrees by rotating the drive motor to make the lower positioning cylinder seat and the upper positioning cylinder seat in a horizontal state. Then, the transport platform is pushed to the bottom of the hood workpiece. Then, the plate seat drive cylinder drives the lifting plate seat to support the supporting roller column on the lower part of the hood workpiece. Then, the inner support clamp seat on the side of the lower positioning cylinder seat and the upper positioning cylinder seat retracts, so that the released hood workpiece is supported on the upper part of the transport platform. Then, the hood workpiece is moved out of the processing area by pushing, and the unloading of the hood workpiece is completed.

[0022] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0023] 1. This welding device adopts a flip-type pedestal installation structure, and uses the flip support as the clamping support structure of the workpiece. The flip drive motor drives the flip support to switch between vertical and horizontal support states. The transport pedestal that moves on the upper part of the flip support can quickly and easily complete the loading and unloading installation of the hood workpiece, greatly improving the loading and unloading installation convenience of the device.

[0024] 2. An inner-side expansion support workpiece positioning structure is adopted. The upper positioning cylinder seat is coaxially driven by the lifting drive cylinder and can be lifted and lowered on the upper part of the lower positioning cylinder seat. In conjunction with the inner support clamp seat driven by the seat drive motor, the cylinder and head seat of the hood can be clamped and supported from the inside. The clamping and positioning are fast and accurate, and the lifting and lowering adjustment of the upper positioning cylinder seat can quickly and conveniently complete the positioning and docking of the hood cylinder and the head seat, which is beneficial to improving the welding positioning efficiency and welding accuracy of the device.

[0025] 3. The inner support clamp adopts a stepped support working mode, and uses an elastic sliding structure to connect and install the support guide wheel. During the adjustment and positioning stage, the support guide wheel is used to provide rolling support to the inner side of the hood, which can effectively facilitate the clamping, positioning and adjustment of the hood structure. After the positioning adjustment and correction, the support guide wheel is moved back and retracted by constant pressure, and the hood is supported and limited by the edge of the inner support clamp. The dual structure can facilitate the positioning and adjustment of the hood workpiece while effectively improving the clamping and positioning accuracy of the hood, which is beneficial to the improvement of the hood welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 It is a schematic diagram of the front side stereoscopic structure of the overall working installation of the present invention;

[0028] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the overall working installation of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention;

[0030] Figure 4 It is a schematic diagram of the working installation structure of the lower positioning cylinder seat and the upper positioning cylinder seat of the present invention;

[0031] Figure 5 This is a schematic diagram of the inner support clamp drive installation structure of the present invention;

[0032] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the middle A area;

[0033] Figure 7 This is a schematic diagram of the working installation structure of the welding mechanism of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the loading mechanism of the present invention.

[0035] Explanation of the accompanying drawings: 1. Bottom bracket; 2. Flip support; 3. Flip drive motor; 4. Support turntable; 5. Rotation drive motor; 6. Lower positioning cylinder seat; 7. Upper positioning cylinder seat; 8. Lifting drive cylinder; 9. Lower clamp seat drive motor; 10. Upper clamp seat drive motor; 11. Inner support clamp seat; 12. Support guide wheel; 13. Drive disc seat; 14. Drive support arm; 15. Lifting guide column; 16. Guide wheel connecting block; 17. Spring; 18. Limit bolt column; 19. Clamping support pad; 20. Welding support; 21. Horizontal drive motor; 22. Vertical drive motor; 23. Laser welding head; 24. Transport platform; 25. Lifting plate seat; 26. Plate seat drive cylinder; 27. Support roller column. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0038] See also Figures 1-8 The present invention provides a technical solution: an aircraft engine cover welding device, including a clamping mechanism, a welding mechanism and a loading mechanism, specifically:

[0039] The clamping mechanism is used for clamping and installing the hood workpiece. The clamping mechanism includes a bottom bracket 1, a flip support 2, a flip drive motor 3, a support turntable 4, a rotation drive motor 5, a lower positioning cylinder seat 6, an upper positioning cylinder seat 7, a lifting drive cylinder 8, a lower clamp seat drive motor 9, an upper clamp seat drive motor 10, an inner support clamp seat 11 and a support guide wheel 12. The flip support 2 is driven by the flip drive motor 3 to flip and be installed on the upper part of the bottom bracket 1. Specifically, as shown in the attached figure Figure 3 As shown, the flip support 2 is installed on the upper rear side of the bottom bracket 1 through a fixed axis flip support supported by a double-sided rotating shaft. The flip drive motor 3 is a reduction motor. The flip drive motor 3 is fixedly installed on the side of the bottom bracket 1. The rotating shaft end of the reducer of the flip drive motor 3 is fixedly installed with a driving gear. The edge of the flip support 2 is provided with a semicircular gear seat. The driving gear is meshed with the tooth groove part of the semicircular gear seat. A flip-type pedestal installation structure is adopted. The flip support 2 is used as a clamping support structure for the workpiece. The working drive of the flip drive motor 3 enables the flip support 2 to switch between vertical and horizontal support states.

[0040] The support turntable 4 is driven to rotate by the turning drive motor 3 and is installed on the upper part of the turning support 2. Figure 3 As shown, the support turntable 4 is fixedly mounted on the upper part of the flip support 2, the rotation drive motor 5 is a reduction motor, fixedly mounted on the rear part of the flip support 2, and the shaft end of the reducer of the rotation drive motor 5 is fixedly mounted with a transmission gear, which is engaged with the tooth groove part of the lower part of the support turntable 4. The rotation drive of the upper turntable part of the support turntable 4 can be achieved through the meshing transmission. The lower positioning cylinder seat 6 is fixedly mounted on the upper part of the support turntable 4, and the upper positioning cylinder seat 7 is driven by the lifting drive cylinder 8 to move up and down and is mounted on the upper part of the lower positioning cylinder seat 6. Specifically, as shown in the attached Figure 4 As shown, in order to realize the lifting and lowering guidance of the upper positioning cylinder seat 7, lifting guide columns 15 are evenly fixedly installed in a circular shape on the lower part of the upper positioning cylinder seat 7, and the lower part of the lifting guide columns 15 is movably plugged into the socket part of the upper part of the upper positioning cylinder seat 7. The lifting drive cylinder 8 is a servo electric cylinder, and the lifting drive cylinder 8 is fixedly installed on the inner side of the cavity in the middle of the lower positioning cylinder seat 6. The lower part of the upper positioning cylinder seat 7 is fixedly connected to the push rod end of the lifting drive cylinder 8. The upper positioning cylinder seat 7 can be driven to lift and displace vertically by the lifting drive cylinder 8.

[0041] The inner support clamping seat 11 is driven by the lower clamping seat driving motor 9 and the upper clamping seat driving motor 10 and is respectively installed on the outer peripheral side of the lower positioning cylinder seat 6 and the upper positioning cylinder seat 7. Specifically, as shown in the attached Figure 5As shown, in order to realize working drive, a driving disc seat 13 and a driving support arm 14 are provided inside the lower positioning cylinder seat 6 and the upper positioning cylinder seat 7. The two groups of driving disc seats 13 are rotatably installed inside the lower positioning cylinder seat 6 and the upper positioning cylinder seat 7 respectively. The lower clamping seat driving motor 9 and the upper clamping seat driving motor 10 are respectively installed with the two groups of driving disc seats 13 through the rotating shaft, and are respectively used for the two groups of driving disc seats 13 to rotate and drive the work. A plurality of driving support arms 14 are provided, and the four driving support arms 14 are evenly distributed in a circular shape. The driving support arms 14 are slidably fitted with the guide slots provided on the sides of the lower positioning cylinder seat 6 and the upper positioning cylinder seat 7, and can perform telescopic sliding movement in the direction of the slot. In order to realize telescopic drive The arc-shaped tooth seat is provided at the end of the driving arm 14, and the arc-shaped tooth seat is slidably fitted with the spiral groove provided on the upper part of the driving disc seat 13 to form a four-claw chuck-type working driving structure. The workpiece positioning structure with an inner expansion support is adopted. The upper positioning cylinder seat 7 is driven by the lifting drive cylinder 8 and is coaxially lifted and installed on the upper part of the lower positioning cylinder seat 6. In conjunction with the inner support clamping seat 11 driven by the seat driving motor, the cylinder and the head seat of the machine cover can be clamped and supported from the inside. The clamping and positioning are fast and accurate, and the lifting and lowering adjustment of the upper positioning cylinder seat 7 can quickly and conveniently complete the positioning and docking of the cylinder of the machine cover and the head seat, which is beneficial to improving the welding positioning efficiency and welding accuracy of the device.

[0042] The inner support clamp 11 is used for clamping and supporting the hood workpiece. Figure 5 As shown, the end of the inner support clamp 11 is fixedly installed with the end of the driving arm 14 by means of a notch-fitting bolt fastening, and the support guide wheel 12 is used for positioning and adjusting the hood workpiece. Figure 6As shown, the support guide wheels 12 are arranged in pairs, and the inner sides of the mounting grooves provided at both ends of the inner support clamp 11 are respectively slidably fitted with guide wheel connecting blocks 16. The support guide wheel 12 is rotatably mounted on the upper part of the guide wheel connecting block 16 through a rotating shaft. In order to provide elastic supporting force, a spring 17 is installed on the mounting side of the guide wheel connecting block 16 and the mounting groove. Limiting bolts 18 are installed on both sides of the middle of the guide wheel connecting block 16. The lower end of the limiting bolt 18 is slidably fitted in the limiting guide groove provided in the mounting groove. The working limit of the outward extension stroke of the support guide wheel 12 can be achieved by the engaging and clamping limit of the limiting bolt 18 and the limiting guide groove. The inner support clamp 11 A step-by-step support working method is adopted, and the support guide wheel 12 is connected and installed with an elastic sliding structure. During the adjustment and positioning stage, the support guide wheel 12 is used to provide rolling support for the inner side of the hood, which can effectively facilitate the clamping, positioning and adjustment of the hood structure. After the positioning adjustment and correction, the support guide wheel 12 is moved back and retracted by constant pressure, and the hood is supported and limited by the edge of the inner support clamp 11. The dual structure can effectively improve the clamping and positioning accuracy of the hood while facilitating the positioning and adjustment of the hood workpiece, which is beneficial to the improvement of the hood welding quality. In order to improve the clamping and support stability of the inner support clamp 11 and the hood workpiece, a clamping pad 19 is fixedly installed on the middle part of the outer side of the inner support clamp 11.

[0043] The loading mechanism is used for loading and transferring support of the engine hood. The loading mechanism includes a transport platform 24, a lifting plate seat 25, a plate seat driving cylinder 26 and a supporting roller column 27. The transport platform 24 is horizontally mounted on the upper part of the bottom bracket 1. Specifically, as shown in the attached Figure 7 As shown, the lower part of the transport platform 24 is supported by a rotating shaft and a supporting rail wheel is installed. The supporting rail wheel is rolling supported and installed with the track portion of the front part of the bottom bracket 1. The supporting roller column 27 follows the lifting plate seat 25 and is driven by the plate seat driving cylinder 26 to move up and down and is installed on the upper part of the transport platform 24. Specifically, as shown in the attached Figure 8 As shown, a lifting guide column is fixedly installed on the upper part of the lifting plate seat 25, and the lifting plate seat 25 is movably mounted on the lifting groove seat provided on the upper part of the transport platform 24 through the support of the lifting guide column. The plate seat driving cylinder 26 is a servo electric cylinder. There are two plate seat driving cylinders 26. The two groups of plate seat driving cylinders 26 are respectively fixedly installed on both sides of the lower part of the transport platform 24. The push rod end of the plate seat driving cylinder 26 is fixedly installed on the lower part of the lifting plate seat 25. The lifting and lowering displacement drive of the lifting plate seat 25 can be realized by driving the plate seat driving cylinder 26. The two groups of supporting rollers 27 are rotatably mounted on the upper part of the two groups of lifting guide columns through the rotating shaft support. The placed hood workpiece can be installed and supported by the two groups of supporting rollers 27.

[0044] The welding mechanism is used for welding the hood workpiece. The welding mechanism includes a welding support 20, a horizontal drive motor 21, a vertical drive motor 22 and a laser welding head 23. The welding support 20 is driven by the horizontal drive motor 21 and is installed on the side of the bottom bracket 1. Specifically, as shown in the attached Figure 7 As shown, in order to facilitate the mobile support of the welding support 20, a transverse rail seat is provided at the rear edge of the bottom bracket 1. The lower part of the welding support 20 is slidably engaged with the rail seat portion of the upper part of the transverse rail seat for support installation. The transverse drive motor 21 is used for displacement drive of the welding support 20. The transverse drive motor 21 is fixedly installed on the side of the transverse rail seat. A drive screw is installed at the shaft end of the transverse drive motor 21. The drive screw is threadedly installed with the screw hole portion of the lower part of the welding support 20. The laser welding head 23 is movable and lifted and installed on the welding support by the vertical drive motor 22. The edge of the seat 20, specifically, in order to facilitate the movement and guiding support of the laser welding head 23, a vertical rail seat is fixedly installed on the inner side of the welding support 20, and the rear support portion of the laser welding head 23 is slidably engaged with the rail seat portion of the vertical rail seat. The vertical drive motor 22 is fixedly installed on the upper part of the welding support 20, and a transmission screw is installed at the shaft end of the vertical drive motor 22. The transmission screw is threadedly installed with the screw hole portion of the support portion of the laser welding head 23. The welding processing of the installed hood workpiece can be realized through biaxial drive and axial rotation of the positioning cylinder seat.

[0045] Working principle or structural principle:

[0046] After the loading and positioning is completed, the hood workpiece is installed on the upper part of the positioning cylinder seat by pushing the hood workpiece in a set manner. After that, the lower clamping seat driving motor 9 and the upper clamping seat driving motor 10 are driven to expand the inner support clamping seat 11 to pre-support and limit the inner side of the hood workpiece through the support guide wheel 12. After that, the position of the hood workpiece is adjusted by lifting and lowering, and the inner support clamping seat 11 is used to limit and support the inner side of the hood workpiece by expanding outward, thereby completing the loading and positioning of the hood workpiece.

[0047] Flip loading: After the loading positioning is completed, the support turntable 4 is flipped upward by 90 degrees by rotating the drive motor 5, so that the lower positioning cylinder seat 6 and the upper positioning cylinder seat 7 are in a vertical state, completing the flip loading of the hood workpiece;

[0048] Positioning welding: After loading is completed, the upper positioning cylinder seat 7 is driven downward by the lifting drive cylinder 8 to make the cylinder ring part and the head seat part of the hood workpiece close to each other, and the position of the head seat part of the hood workpiece is adjusted and corrected for the second time by observing the interface and coordinating the retraction of the upper positioning cylinder seat 7. After completion, the adjusted head seat part of the hood workpiece is limited and fixed by the internal support clamping, and the welding side of the cylinder ring part and the head seat part of the hood workpiece are closely contacted by the falling of the lifting drive cylinder 8. Then, the laser welding head 23 is displacement-driven by the cooperation of the horizontal drive motor 21 and the vertical drive motor 22, so that the laser welding head 23 is on the welding side of the hood workpiece, and then the support turntable 4 is driven by the rotation drive motor 5 to drive the hood workpiece to rotate axially. During the process, the laser welding head 23 completes the butt welding of the cylinder ring part and the head seat part of the hood workpiece;

[0049] Flipping and unloading: After welding is completed, the support turntable 4 is flipped downward 90 degrees by rotating the drive motor 5, so that the lower positioning cylinder seat 6 and the upper positioning cylinder seat 7 are in a horizontal state, and then the transport platform 24 is pushed to the bottom of the hood workpiece, and then the plate seat drive cylinder 26 drives the lifting plate seat 25 to support the support roller column 27 on the lower part of the hood workpiece, and then the inner support clamp 11 on the side of the lower positioning cylinder seat 6 and the upper positioning cylinder seat 7 retracts, so that the released hood workpiece is supported on the upper part of the transport platform 24, and then the hood workpiece is moved out of the processing area by pushing to complete the unloading of the hood workpiece.

[0050] In summary, the present welding device adopts a flip-type pedestal installation structure, and uses the flip support 2 as the clamping support structure of the workpiece. The flip support 2 can switch between vertical and horizontal support states in conjunction with the working drive of the flip drive motor 3. The transport pedestal 24 moving on the upper part of the flip support 2 can conveniently and quickly complete the loading and unloading installation of the hood workpiece, which greatly improves the loading and unloading installation convenience of the device. The workpiece positioning structure adopts an inner expansion support type. The upper positioning cylinder seat 7 is driven by the lifting drive cylinder 8 to be coaxially lifted and installed on the upper part of the lower positioning cylinder seat 6. In conjunction with the inner support clamp 11 driven by the seat drive motor, the cylinder and the head seat of the hood can be clamped and supported from the inside, and the clamping and positioning are fast. It is precise, and combined with the lifting and lowering adjustment of the positioning cylinder seat 7, the positioning and docking of the hood cylinder and the head seat can be completed quickly and conveniently, which is beneficial to improving the welding positioning efficiency and welding accuracy of the device. The inner support clamp 11 adopts a step-by-step support working method, and uses an elastic sliding structure to connect and install the support guide wheel 12. During the adjustment and positioning stage, the inner side of the hood is rolled supported by the support guide wheel 12, which can effectively facilitate the clamping and positioning adjustment of the hood structure. After the positioning adjustment and correction, the support guide wheel 12 is moved back and retracted by constant pressure, and the hood is supported and limited by the edge of the inner support clamp 11. The dual structure can effectively improve the clamping and positioning accuracy of the hood while facilitating the positioning adjustment of the hood workpiece, which is beneficial to improving the welding quality of the hood.

[0051] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. An aircraft engine cover welding device, comprising a clamping mechanism, a welding mechanism, and a loading mechanism, characterized in that: The clamping mechanism is used for clamping and installing the hood workpiece, and the clamping mechanism includes a bottom bracket (1), a flip support (2), a flip drive motor (3), a support turntable (4), a rotation drive motor (5), a lower positioning cylinder seat (6), an upper positioning cylinder seat (7), a lifting drive cylinder (8), a lower clamp seat drive motor (9), an upper clamp seat drive motor (10), an inner support clamp seat (11) and a support guide wheel (12). The flip support (2) is driven by the flip drive motor (3) to flip and install on the upper part of the bottom bracket (1). The support turntable (4) The turning cylinder seat (6) is installed on the upper part of the turning support (2) by being driven to rotate by the turning drive motor (3), the lower positioning cylinder seat (6) is installed on the upper part of the supporting turntable (4), the upper positioning cylinder seat (7) is driven to move up and down by the lifting drive cylinder (8) and is installed on the upper part of the lower positioning cylinder seat (6), the inner support clamp seat (11) is driven by the lower clamp seat driving motor (9) and the upper clamp seat driving motor (10) and is installed on the outer peripheral side of the lower positioning cylinder seat (6) and the upper positioning cylinder seat (7), respectively, and the support guide wheel (12) is retractably installed on the edge of the inner support clamp seat (11); The lower positioning cylinder seat (6) and the upper positioning cylinder seat (7) are both provided with a driving disc seat (13) and a driving support arm (14), the end of the inner support clamp seat (11) is fixedly installed with the end of the driving support arm (14) by means of a slot-engaging and matching bolt, and the support guide wheel (12) is arranged in pairs, and the inner sides of the mounting slots provided at both ends of the inner support clamp seat (11) are respectively slidably engaged with guide wheel connecting blocks (16), and the support guide wheel (12) is rotatably mounted on the upper part of the guide wheel connecting block (16) by a rotating shaft support, and the guide wheel connecting block (16) is abutted against the mounting side of the mounting slot by a spring (17), and both sides of the middle part of the guide wheel connecting block (16) are penetrated and installed, and the lower end of the limiting bolt (18) is slidably engaged with the limiting guide groove provided in the mounting slot, and a clamping pad (19) is fixedly installed on the middle part of the outer side of the inner support clamp seat (11); The welding mechanism is used for welding a hood workpiece, and comprises a welding support (20), a transverse drive motor (21), a vertical drive motor (22), and a laser welding head (23); the welding support (20) is driven by the transverse drive motor (21) to be movably mounted on the side of the bottom bracket (1); the laser welding head (23) is driven by the vertical drive motor (22) to be movably lifted and mounted on the side of the welding support (20); The loading mechanism is used for supporting the loading and transfer of the engine hood, and comprises a transport platform (24), a lifting plate seat (25), a plate seat driving cylinder (26) and a supporting roller (27). The transport platform (24) is horizontally movably mounted on the upper part of the bottom bracket (1), and the supporting roller (27) follows the lifting plate seat (25) and is driven by the plate seat driving cylinder (26) to be movable and lifted and mounted on the upper part of the transport platform (24).

2. The aircraft engine cover welding device according to claim 1, characterized in that: The flip support (2) is mounted on the upper rear side of the bottom bracket (1) via a fixed axis supported by a double-sided rotating shaft. The flip drive motor (3) is fixedly mounted on the side of the bottom bracket (1). A driving gear is fixedly mounted on the rotating shaft end of the flip drive motor (3). A semicircular gear seat is provided on the side of the flip support (2). The driving gear is meshed with the tooth groove portion of the semicircular gear seat.

3. The aircraft engine cover welding device according to claim 2, characterized in that: The supporting turntable (4) is fixedly mounted on the upper part of the flip support (2), the rotating drive motor (5) is fixedly mounted on the rear part of the flip support (2), and a transmission gear is fixedly mounted on the rotating shaft end of the rotating drive motor (5), and the transmission gear is meshed with the tooth groove portion of the lower part of the supporting turntable (4).

4. The aircraft engine cover welding device according to claim 3, characterized in that: The lower positioning cylinder seat (6) is fixedly mounted on the upper part of the supporting turntable (4); the lower part of the upper positioning cylinder seat (7) is evenly and circumferentially fixedly mounted with a lifting guide column (15); the lower part of the lifting guide column (15) is movably plugged into the socket portion of the upper part of the upper positioning cylinder seat (7); the lifting drive cylinder (8) is fixedly mounted on the inner side of the cavity in the middle part of the lower positioning cylinder seat (6); the lower part of the upper positioning cylinder seat (7) is fixedly connected to the push rod end of the lifting drive cylinder (8).

5. The aircraft engine cover welding device according to claim 4, characterized in that: The two sets of drive disc seats (13) are rotatably mounted inside the lower positioning cylinder seat (6) and the upper positioning cylinder seat (7), respectively. The lower clamping seat drive motor (9) and the upper clamping seat drive motor (10) are respectively transmission-mounted with the two sets of drive disc seats (13) via rotating shafts.

6. The aircraft engine cover welding device according to claim 5, characterized in that: The driving support arms (14) are provided in plurality, and the plurality of driving support arms (14) are evenly distributed in a circular shape. The driving support arms (14) are slidably engaged with guide grooves provided on the sides of the lower positioning cylinder seat (6) and the upper positioning cylinder seat (7). An arc-shaped tooth seat is provided at the end of the driving support arm (14), and the arc-shaped tooth seat is slidably engaged with a spiral groove provided on the upper part of the driving disc seat (13).

7. The aircraft engine cover welding device according to claim 1, characterized in that: The rear side of the bottom bracket (1) is provided with a transverse rail seat, the lower part of the welding support (20) is slidably engaged with the rail seat part of the upper part of the transverse rail seat for support installation, the transverse drive motor (21) is fixedly installed on the side of the transverse rail seat, the shaft end of the transverse drive motor (21) is installed with a drive screw, the drive screw is threadedly installed with the screw hole part of the lower part of the welding support (20), the inner side of the welding support (20) is fixedly installed with a vertical rail seat, the rear support part of the laser welding head (23) is slidably engaged with the rail seat part of the vertical rail seat, the vertical drive motor (22) is fixedly installed on the upper part of the welding support (20), the shaft end of the vertical drive motor (22) is installed with a transmission screw, the transmission screw is threadedly installed with the screw hole part of the support part of the laser welding head (23).

8. The aircraft engine cover welding device according to claim 1, characterized in that: The lower part of the transport platform (24) is supported by a rotating shaft and is equipped with a supporting rail wheel. The supporting rail wheel is rollingly supported and installed with the track part of the front part of the bottom bracket (1). The upper part of the lifting plate seat (25) is fixedly equipped with a lifting guide column. The lifting plate seat (25) is supported by the lifting guide column and is movably engaged and installed in the interior of the lifting groove seat provided on the upper part of the transport platform (24). A plurality of plate seat driving cylinders (26) are provided. The plate seat driving cylinders (26) are fixedly installed on the lower part of the transport platform (24). The push rod end of the plate seat driving cylinder (26) is fixedly installed on the lower part of the lifting plate seat (25). The two groups of supporting rollers (27) are rotatably installed on the upper parts of the two groups of lifting guide columns respectively through the rotating shaft support.

9. A method for processing an aircraft engine cover welding device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, loading and positioning, before processing, the cylinder ring part and the head seat part of the hood workpiece are supported and installed on the upper part of the support roller (27) above the transport platform (24), and then the device is switched to the loading mode, and the support turntable (4) is turned downward 90 degrees by the rotation drive motor (5), so that the lower positioning cylinder seat (6) and the upper positioning cylinder seat (7) are in a horizontal state, and then the lifting plate seat (25) is driven by the plate seat drive cylinder (26) to lift and lower to adjust the support height of the hood workpiece so that the hood workpiece and the positioning cylinder seat are in a coaxial state, and then the hood workpiece is installed on the upper part of the positioning cylinder seat in a set manner by pushing, and then the inner support clamp seat (11) is driven by the lower clamp seat drive motor (9) and the upper clamp seat drive motor (10) to expand and pre-support the inner side of the hood workpiece through the support guide wheel (12), and then the position of the hood workpiece is adjusted by lifting and lowering, and the inner side of the hood workpiece is limited and supported by the inner support clamp seat (11) through outward expansion, completing the loading and positioning of the hood workpiece; S2, flip loading, after completing the loading positioning, the support turntable (4) is flipped upward by 90 degrees by rotating the drive motor (5), so that the lower positioning cylinder seat (6) and the upper positioning cylinder seat (7) are in a vertical state, completing the flip loading work of the hood workpiece; S3, positioning welding, after the loading is completed, the upper positioning cylinder seat (7) is driven downward by the lifting drive cylinder (8) to make the cylinder ring part and the head seat part of the hood workpiece close to each other, and the position of the head seat part of the hood workpiece is adjusted and corrected for the second time by observing the interface and cooperating with the retraction of the upper positioning cylinder seat (7). After completion, the adjusted head seat part of the hood workpiece is limited and fixed by the internal support clamping, and the welding side of the cylinder ring part and the head seat part of the hood workpiece are closely contacted by the falling of the lifting drive cylinder (8), and then the laser welding head (23) is displaced and driven by the horizontal drive motor (21) and the vertical drive motor (22), so that the laser welding head (23) is located on the welding side of the hood workpiece, and then the support turntable (4) is driven by the rotation drive motor (5) to drive the hood workpiece to rotate axially, and the butt welding of the cylinder ring part and the head seat part of the hood workpiece is completed by the laser welding head (23) during the process; S4, flipping and unloading. After welding is completed, the support turntable (4) is flipped downward by 90 degrees by rotating the drive motor (5), so that the lower positioning cylinder seat (6) and the upper positioning cylinder seat (7) are in a horizontal state, and then the transport platform (24) is pushed to the bottom of the hood workpiece, and then the lifting plate seat (25) is driven by the plate seat drive cylinder (26) to support the support roller (27) on the lower part of the hood workpiece, and then the inner support clamping seat (11) on the side of the lower positioning cylinder seat (6) and the upper positioning cylinder seat (7) is retracted, so that the released hood workpiece is supported on the upper part of the transport platform (24), and then the hood workpiece is moved out of the processing area by pushing, completing the unloading of the hood workpiece.

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