Surface treatment and welding production line for aeronautical motor box exoskeleton

Abstract

The application belongs to the technical field of aviation part production, and particularly relates to a surface treatment and welding production line for an aviation motor box outer framework, which comprises a load assembly, a surface stamping and shaping assembly, a first punching assembly, a second punching assembly, a third punching assembly, a dustproof component pressing assembly and a mounting base welding assembly arranged side by side above the load assembly; the application integrates seven processes of surface shaping, multiple punching, precision pressing of dustproof components, automatic welding of mounting bases and the like on one production line according to the special structure of the aviation motor box outer framework, so that the stamping of the heat dissipation holes and the online self-polishing are synchronously performed; the mounting base welding assembly is designed with a double-layer through-hole material bin and a spring plunger support structure, cooperates with a pressing push rod and a feeding push plate, and realizes automatic sequencing, jacking and pushing of the mounting base; the adjustable inclined welding joint has multiple degrees of freedom and can adapt to the welding angle requirements of the mounting bases at different positions, so as to ensure the welding quality.

Description

Technical Field

[0001] This invention belongs to the field of aviation component manufacturing technology, specifically relating to a surface treatment and welding production line for the outer frame of an aviation motor housing. Background Technology

[0002] The outer frame of an aircraft motor housing is an indispensable core support component in an aircraft motor system. Its function revolves around the safe and stable operation of the motor and its adaptation to the aviation environment, spanning the entire motor operation process. Its primary function is protection, effectively isolating the motor from dust, moisture, and other contaminants in the high-altitude environment, preventing corrosion of internal precision components, and resisting mechanical impacts and external interference during flight, ensuring the integrity of the motor's internal structure. Secondly, it plays a crucial role in heat dissipation, efficiently transferring the heat generated by the motor to the external environment, preventing performance degradation or damage due to overheating, meeting the stringent heat dissipation requirements of aircraft motors. Furthermore, the outer frame provides a stable mounting base for the motor, ensuring precise positioning within the fuselage, reducing the impact of flight vibrations on motor operation, and simultaneously addressing lightweight requirements. While maintaining structural strength, it reduces overall weight, aligning with the lightweight design philosophy of aviation equipment, providing comprehensive protection for the long-term stable and reliable operation of aircraft motors.

[0003] Our company has designed an external frame for an aircraft motor housing, such as Figure 2 As shown, the outer frame of the aircraft motor housing mainly includes a frame casting. The frame of the frame casting has a closed panel area and multiple open panel areas. End plates are provided at the edges of the open panel areas. During processing, the end plates of the frame casting are first subjected to surface stamping and shaping treatment, and then waist-shaped holes are stamped on the end plates. Then, instrument holes and heat dissipation hole arrays are stamped in the closed panel area. Dustproof components are innovatively added to the heat dissipation hole array. Finally, mounting bases are welded on both sides of the instrument holes to meet the subsequent instrument installation requirements. Mounting bases are also welded on both sides of the heat dissipation hole array and dustproof components to meet the subsequent low-noise cross-flow fan installation requirements.

[0004] Existing surface treatment and welding production lines for aircraft motor housing frames have shortcomings in use. First, they cannot meet the requirements for surface shaping, opening, dustproof component installation, and mounting base welding of the aforementioned aircraft motor housing frames. Second, their low level of automation is not conducive to industrialized mass production operations, thus affecting production efficiency. In view of this, the inventors hope to optimize and improve them. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems existing in the prior art and to provide a surface treatment and welding production line for the outer frame of an aircraft motor housing.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0007] This invention provides a surface treatment and welding production line for an aircraft motor housing outer frame, including a material loading assembly and a surface stamping and shaping assembly, a first punching assembly, a second punching assembly, a third punching assembly, a dustproof component pressing assembly, and a mounting base welding assembly arranged side-by-side above it. The material loading assembly is used to position and place the frame casting blank and can drive it to move horizontally or rotate around its circumference. The surface stamping and shaping assembly is used to perform surface stamping and shaping on the end plates of the frame casting blank. The first punching assembly is used to stamp and machine oblong holes on the shaped end plates. The second punching assembly is used to stamp and machine instrument holes on the closed panel area of ​​the frame casting blank. The third punching assembly is used to stamp and machine a heat dissipation hole array on the closed panel area of ​​the frame casting blank and perform self-grinding treatment. The dustproof component pressing assembly is used to stamp and install dustproof components in the heat dissipation hole array. The mounting base welding assembly is used to weld and install mounting bases on both sides of the instrument holes and the heat dissipation hole array.

[0008] Furthermore, in the above-mentioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the frame of the cast billet is provided with a closed panel area and multiple open panel areas, and the edge of the open panel area is provided with an end plate.

[0009] After the end plate of the skeleton casting billet is subjected to surface stamping and shaping, waist-shaped holes are then stamped on the end plate, and instrument holes and heat dissipation hole arrays are stamped in the closed panel area to obtain the skeleton semi-finished product.

[0010] After dustproof components are added to the heat dissipation hole array of the semi-finished skeleton, mounting bases are welded and installed on both sides of the instrument hole and the heat dissipation hole array to obtain the outer skeleton of the aircraft motor box.

[0011] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the dustproof component includes a mounting plate. One side of the mounting plate is provided with a protruding tube corresponding to the heat dissipation hole array. The inner wall of the protruding tube is provided with a retaining ring. The inner and outer sides of the retaining ring are respectively equipped with an air guide cover and a dustproof cover connected by a compression spring. The air guide cover is provided with an air guide hole communicating with the inner cavity of the retaining ring. The outer diameter of the dustproof cover is smaller than the diameter of the cavity in which it is located.

[0012] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the material carrier assembly includes a material carrier base plate, a horizontal and vertical linear guide pair, a download plate, a first rotary driver, an upper carrier plate, and a material carrier seat. The slide rail of the horizontal and vertical linear guide pair is fixed on the material carrier base plate. The download plate is mounted on the upper side of the slider of the horizontal and vertical linear guide pair. The download plate is supported by the upper carrier plate via the first rotary driver. The material carrier seat is mounted on the upper side of the upper carrier plate. The upper side of the material carrier seat has an inwardly formed frame positioning groove that matches the shape of the frame casting billet. The bottom surface of the material carrier seat located in the frame positioning groove has a stamped clearance groove corresponding to the positions of the waist-shaped hole, instrument hole, and heat dissipation hole array.

[0013] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the surface stamping and shaping assembly includes a first horizontal transverse linear guide pair, a first lifting and flipping mechanism, and a shaping block. The shaping block is driven by the first lifting and flipping mechanism installed on the outside of the slider of the first horizontal transverse linear guide pair to perform vertical lifting or horizontal flipping actions.

[0014] The first lifting and tilting mechanism includes a frame, a vertical push rod, a slip ring, a connecting shaft, a tilting motor, a driving bevel gear, and a driven bevel gear. The vertical push rod and the tilting motor are mounted on the frame. The movable end of the vertical push rod is connected to the upper end of the connecting shaft via the slip ring. A shaping block is fixed to the lower end of the connecting shaft. The driving bevel gear is mounted on the output end of the tilting motor. The driven bevel gear is sleeved on the outside of the connecting shaft and forms a steering gear set with the driving bevel gear. A torque transmission keyway is provided on the outside of the connecting shaft. A torque transmission convex key that mates with the torque transmission keyway is provided on the inner wall of the shaft hole of the driven bevel gear.

[0015] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the first punching assembly includes a second horizontal linear guide pair, a second lifting and flipping mechanism, and a waist-shaped hole forming punch. The waist-shaped hole forming punch is driven by the second lifting and flipping mechanism installed on the outside of the slider of the second horizontal linear guide pair to perform vertical lifting or horizontal flipping actions. The structure of the second lifting and flipping mechanism is the same as that of the first lifting and flipping mechanism.

[0016] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the second punching assembly includes a third horizontal linear guide pair, a third lifting and flipping mechanism, and an instrument hole forming punch. The instrument hole forming punch is driven by the third lifting and flipping mechanism, which is installed on the outside of the slider of the third horizontal linear guide pair, to perform vertical lifting or horizontal flipping actions. The structure of the third lifting and flipping mechanism is the same as that of the first lifting and flipping mechanism.

[0017] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the third punching assembly includes a fourth horizontal linear guide pair, a fourth lifting and tilting mechanism, a mounting base, a heat dissipation hole forming punch, a grinding drive motor, and a transmission shaft. The mounting base is driven by the fourth lifting and tilting mechanism, which is installed on the outside of the slider of the fourth horizontal linear guide pair, to perform vertical lifting or horizontal tilting actions. The structure of the fourth lifting and tilting mechanism is the same as that of the first lifting and tilting mechanism.

[0018] The bottom end of the heat dissipation hole forming punch is provided with a ring cutting edge, the outer side is provided with a grinding layer, and the top end is provided with a worm gear that is movable and restricted to the mounting base; multiple drive shafts are installed side by side in the mounting base, and multiple worm segments that mesh with the worm gears on both sides are provided on the drive shafts. The outer end of the drive shaft is provided with an anti-slip pulley, and two adjacent anti-slip pulleys are connected by an anti-slip synchronous belt. The output end of the grinding drive motor is provided with a drive pulley, and the drive pulley is connected to an anti-slip pulley that serves as the driving pulley via the anti-slip synchronous belt.

[0019] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the dustproof component pressing assembly includes a fifth horizontal linear guide rail pair, a fifth lifting and tilting mechanism, and a suction cup. The suction cup is driven by the fifth lifting and tilting mechanism, which is installed on the outside of the slider of the fifth horizontal linear guide rail pair, to perform vertical lifting or horizontal tilting actions. The structure of the fifth lifting and tilting mechanism is the same as that of the first lifting and tilting mechanism. The lower side of the suction cup is provided with several suction holes. The shape of the suction cup matches the shape of the mounting plate in the dustproof component. The lower side of the suction cup is provided with several suction holes, and the positions of the suction holes are staggered from the positions of the through holes reserved on the mounting plate.

[0020] Furthermore, in the aforementioned surface treatment and welding production line for the outer frame of the aircraft motor housing, the mounting base welding assembly includes a sixth horizontal transverse linear guide pair, a hopper, a pressing push rod, a pressing block, a feeding drive screw, a feeding push plate, and an adjustable tilt welding head. The hopper and the pressing push rod are installed on the outer side of the slider of the sixth horizontal transverse linear guide pair. The hopper has a storage cavity for storing mounting bases side by side. One end of the storage cavity has symmetrical through holes at the top and bottom. A spring plunger for supporting the mounting base is embedded in the inner wall of the lower through hole of the hopper. The movable end of the pressing push rod is equipped with a pressing block that can enter the storage cavity from the upper through hole.

[0021] The feeding drive screw is located above the hopper, and a feeding push plate extending into the storage cavity is sleeved on the outside of the feeding drive screw. The feeding push plate can be horizontally displaced along the length of the storage cavity under the drive of the feeding drive screw.

[0022] The adjustable tilt welding head includes a second rotary drive, a horizontal plate, a tilt adjustment push rod, a connecting plate, a movable plate, and a welding head. The fixed ring of the second rotary drive is installed on the periphery of the lower through hole of the hopper. The tilt adjustment push rod is installed on the moving ring of the second rotary drive via the horizontal plate. One end of the connecting plate is hinged to the movable end of the tilt adjustment push rod, and the other end of the connecting plate is fixed to the inner side of one end of the movable plate. The other end of the movable plate is hinged to the horizontal plate.

[0023] The beneficial effects of this invention are:

[0024] 1. Integrated end-to-end process to meet special process requirements.

[0025] Addressing the unique structure of aircraft motor housing exoskeletons (closed panel area, open panel area, end plates), this invention integrates seven major processes—surface shaping, multi-type punching (oblong holes, instrument holes, heat dissipation hole arrays), precision pressing of dustproof components, and automatic welding of mounting bases—onto a single production line. This solves the problem of existing technologies being unable to simultaneously complete the installation of dustproof components and the welding of bases at specific locations. In particular, it achieves simultaneous punching of heat dissipation holes and online self-grinding, ensuring the high precision requirements of aerospace-grade equipment.

[0026] 2. High levels of automation and intelligence improve production efficiency.

[0027] The material loading assembly enables the horizontal and longitudinal displacement and circumferential rotation of the workpiece. Combined with the horizontal and lateral movement and lifting and flipping mechanisms of each station, the workpiece can be automatically transferred at different processing angles without the need for manual intervention to change direction or reclamp.

[0028] 3. Unique "lifting + flipping" composite motion mechanism, adaptable to processing in different orientations.

[0029] Each processing component (shaping, punching, press fitting) is equipped with a lifting and tilting mechanism. The connecting shaft is driven to rotate by a bevel gear set, so that the tool head (such as punch block, press block) can be horizontally tilted and adjusted according to the punching orientation of the skeleton casting billet.

[0030] 4. Innovative integrated punching and grinding design for heat dissipation holes

[0031] The third punching assembly not only punches the heat dissipation hole array but also integrates a grinding drive motor and a transmission shaft / worm gear system. During punching, the grinding layer on the outside of the punch bar performs real-time deburring of the hole walls. This avoids a separate deburring process, reduces process flow time, and ensures the smoothness of the inner walls of the heat dissipation holes, facilitating airflow.

[0032] 5. Precision dustproof component press-fitting and error-proof design

[0033] The dustproof component pressing assembly uses a shape-matched suction cup with the suction holes offset from the component's through holes, ensuring a stable grip while preventing air leakage that could affect the suction force. Combined with the precise positioning grooves of the material loading assembly, this ensures that the complex spring-valve-type dustproof component can be accurately pressed into the heat dissipation hole array.

[0034] 6. Flexible and efficient automatic welding material feeding system

[0035] The mounting base welding assembly features a double-layer through-hole hopper and spring plunger support structure. Combined with a pressure pusher and a feeding pusher plate, it enables automatic sorting, lifting, and pushing of the mounting base. The adjustable tilt welding head has multiple degrees of freedom (rotation and tilt adjustment) to adapt to the welding angle requirements of different base positions (instrument hole side, heat dissipation hole side), ensuring weld quality.

[0036] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a connection block diagram of the main electrical components in this invention;

[0039] Figure 2 This is a schematic diagram of the processing flow of the aircraft motor housing outer frame in this invention;

[0040] Figure 3 This is a schematic diagram of the external frame of the aircraft motor housing at one angle in this invention;

[0041] Figure 4 This is a schematic diagram of the outer frame of the aircraft motor housing from another angle in this invention;

[0042] Figure 5 This is a schematic diagram of the dustproof component in this invention;

[0043] Figure 6 This is a schematic diagram of the spring valve core in this invention;

[0044] Figure 7 This is a schematic diagram of the material loading assembly in this invention;

[0045] Figure 8 This is a top view of the material carrier in this invention;

[0046] Figure 9This is a schematic diagram of the surface stamping and shaping component in this invention;

[0047] Figure 10 This is a schematic diagram of the structure of the first punching assembly in this invention;

[0048] Figure 11 This is a schematic diagram of the structure of the second punching assembly in this invention;

[0049] Figure 12 This is a schematic diagram of the third punching assembly in this invention;

[0050] Figure 13 This is a schematic diagram illustrating the rotation principle of the heat dissipation hole forming punch in this invention;

[0051] Figure 14 This is a schematic diagram of the dustproof component pressing assembly in this invention;

[0052] Figure 15 This is a schematic diagram of the structure of the mounting base welding assembly in this invention;

[0053] Figure 16 This is a schematic diagram of the adjustable tilt welding head in this invention;

[0054] In the attached diagram, the components represented by each number are as follows:

[0055] 1-Material carrier assembly, 11-Material carrier substrate, 12-Horizontal and vertical linear guide pair, 13-Download board, 14-First rotary driver, 15-Upper carrier board, 16-Material carrier base;

[0056] 2-Surface stamping and shaping assembly, 21-First horizontal linear guide pair, 22-First lifting and flipping mechanism, 221-Frame, 222-Vertical push rod, 223-Slip ring, 224-Connecting shaft, 225-Flipping motor, 226-Driving bevel gear, 227-Driven bevel gear, 23-Shaping pressure block;

[0057] 3-First punching assembly, 31-Second horizontal linear guide pair, 32-Second lifting and flipping mechanism, 33-Oval hole forming punch block;

[0058] 4-Second punching assembly, 41-Third horizontal linear guide pair, 42-Third lifting and flipping mechanism, 43-Instrument hole forming punch block;

[0059] 5-Third punching assembly, 51-Fourth horizontal linear guide pair, 52-Fourth lifting and flipping mechanism, 53-Mounting base, 54-Heat dissipation hole forming punch, 541-Circular cutting blade, 542-Grinding layer, 543-Worm gear, 55-Grinding drive motor, 56-Drive shaft, 561-Worm section, 562-Anti-slip pulley;

[0060] 6-Dustproof component press-fit assembly, 61-Fifth horizontal transverse linear guide pair, 62-Fifth lifting and tilting mechanism, 63-Suction cup;

[0061] 7- Mounting base welding assembly, 71- Sixth horizontal transverse linear guide pair, 72- Hopper, 721- Storage cavity, 722- Through hole, 723- Spring plunger, 73- Pressing push rod, 74- Pressing block, 75- Feeding drive screw, 76- Feeding push plate, 77- Adjustable tilt welding head, 771- Second rotary drive, 772- Horizontal plate, 773- Tilting push rod, 774- Connecting plate, 775- Movable plate, 776- Welding head;

[0062] 8-Aircraft motor housing outer frame, 8a-Frame casting billet, 8b-Frame semi-finished product, 81-Frame body, 82-Closed panel area, 83-Open panel area, 84-End plate, 85-Oval hole, 86-Instrument hole, 87-Heat dissipation hole array, 88-Dustproof component, 881-Mounting plate, 882-Protruding tube, 883-Retaining ring, 884-Air duct cover, 885-Compression spring, 886-Dustproof cover, 89-Mounting base. Detailed Implementation

[0063] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] like Figure 1 As shown, this embodiment provides a surface treatment and welding production line for an aircraft motor housing outer frame, including a material loading assembly 1 and a surface stamping and shaping assembly 2, a first punching assembly 3, a second punching assembly 4, a third punching assembly 5, a dustproof component pressing assembly 6, and a mounting base welding assembly 7 arranged side by side above it; the material loading assembly 1 is used to position and place the frame casting billet 8a, and can drive it to move horizontally or rotate around the circumference; the surface stamping and shaping assembly 2 is used to perform surface stamping and shaping on the end plate 84 of the frame casting billet 8a. The forming process includes: a first punching assembly 3 for punching a waist-shaped hole 85 on the shaped end plate 84; a second punching assembly 4 for punching an instrument hole 86 on the closed panel area of ​​the skeleton casting 8a; a third punching assembly 5 for punching a heat dissipation hole array 87 on the closed panel area of ​​the skeleton casting 8a and performing self-grinding treatment; a dustproof component press-fit assembly 6 for punching and installing a dustproof component 88 in the heat dissipation hole array 87; and a mounting base welding assembly 7 for welding and installing mounting bases 89 on both sides of the instrument hole 86 and the heat dissipation hole array 87.

[0065] like Figures 2-4 As shown, the frame 81 of the skeleton casting 8a has a closed panel area 82 and multiple open panel areas 83, and the edge of the open panel area 83 is provided with an end plate 84.

[0066] After the end plate 84 of the skeleton casting 8a undergoes surface stamping and shaping, a waist-shaped hole 85 is stamped on the end plate 84. Instrument holes 86 and a heat dissipation hole array 87 are then stamped in the closed panel area 82 to obtain the skeleton semi-finished product 8b. The instrument holes 86 have equal widths and equal or unequal lengths, and their orientations can be horizontal or vertical. The heat dissipation hole array 87 has the same specifications and its orientation can be horizontal or vertical.

[0067] After dustproof components 88 are added to the heat dissipation hole array 87 of the semi-finished skeleton 8b, mounting bases 89 are welded and added to both sides of the instrument hole 86 and the heat dissipation hole array 87 to obtain the outer skeleton 8 of the aircraft motor box.

[0068] The mounting base 89 has a rectangular block structure, and threaded mounting holes can be pre-drilled as needed.

[0069] like Figures 5-6 As shown, the dustproof component 88 includes a mounting plate 881. One side of the mounting plate 881 has a protruding tube 882 corresponding to the heat dissipation hole array 87. The inner wall of the protruding tube 882 has a retaining ring 883. An air guide cover 884 and a dust cover 886, connected by a compression spring 885, are respectively installed on the inner and outer sides of the retaining ring 883. The air guide cover 884 has an air guide hole communicating with the inner cavity of the retaining ring 883. The outer diameter of the dust cover 886 is smaller than the diameter of the cavity in which it is located. The dust cover 886 is made of rubber and can be forced through the retaining ring 883 by pressing. The air guide cover 884, the compression spring 885, and the dust cover 886 together form a spring valve core.

[0070] like Figures 7-8 As shown, the material carrier assembly 1 includes a material carrier base plate 11, a horizontal and vertical linear guide pair 12, a download plate 13, a first rotary driver 14, an upper carrier plate 15, and a material carrier seat 16. The slide rail of the horizontal and vertical linear guide pair 12 is fixed on the material carrier base plate 11. The download plate 13 is mounted on the upper side of the slider of the horizontal and vertical linear guide pair 12. The upper carrier plate 15 is supported by the first rotary driver 14 on the download plate 13. The material carrier seat 16 is mounted on the upper side of the upper carrier plate 15. The upper side of the material carrier seat 16 has an inwardly formed skeleton positioning groove that matches the shape of the skeleton casting billet 8a. The bottom surface of the material carrier seat 16 located in the skeleton positioning groove has a stamped clearance groove corresponding to the positions of the waist-shaped hole 85, the instrument hole 86, and the heat dissipation hole array 87.

[0071] Several support rails are mounted on the upper side of the material carrier plate 11, and support rail wheels that can roll along the support rails are mounted on the lower side of the upper carrier plate 15. The rolling direction is parallel to the slide rail direction of the horizontal longitudinal linear guide pair 12.

[0072] Multiple support rings are installed on the upper side of the upper plate 15, and multiple support rings that slide and are restricted in the support rings are installed on the lower side of the lower plate 13. The axes of the support rings and the support rings coincide with the central axis of the first rotary drive 14.

[0073] like Figure 9 As shown, the surface stamping and shaping assembly 2 includes a first horizontal linear guide pair 21, a first lifting and flipping mechanism 22, and a shaping block 23. The shaping block 23 is driven by the first lifting and flipping mechanism 22, which is installed on the outside of the slider of the first horizontal linear guide pair 21, to perform vertical lifting or horizontal flipping actions.

[0074] The first lifting and tilting mechanism 22 includes a frame 221, a vertical push rod 222, a slip ring 223, a connecting shaft 224, a tilting motor 225, a driving bevel gear 226, and a driven bevel gear 227. The vertical push rod 222 and the tilting motor 225 are mounted on the frame 221. The movable end of the vertical push rod 222 is connected to the upper end of the connecting shaft 224 via the slip ring 223. A shaping pressure block 23 is fixed to the lower end of the connecting shaft 224. The output end of the tilting motor 225 is equipped with the driving bevel gear 226. The driven bevel gear 227 is sleeved on the outside of the connecting shaft 224 and forms a steering gear set with the driving bevel gear 226. The steering gear set is movably supported by the frame 221. A torque transmission keyway is provided on the outside of the connecting shaft 224, and a torque transmission convex key that mates with the torque transmission keyway is provided on the inner wall of the shaft hole of the driven bevel gear 227.

[0075] like Figure 10 As shown, the first punching assembly 3 includes a second horizontal linear guide pair 31, a second lifting and flipping mechanism 32, and a waist-shaped hole forming punch block 33. The waist-shaped hole forming punch block 33 is driven by the second lifting and flipping mechanism 32, which is installed on the outside of the slider of the second horizontal linear guide pair 31, to perform vertical lifting or horizontal flipping actions. The structure of the second lifting and flipping mechanism 32 is the same as that of the first lifting and flipping mechanism 22.

[0076] like Figure 11 As shown, the second punching assembly 4 includes a third horizontal linear guide pair 41, a third lifting and flipping mechanism 42, and an instrument hole forming punch 43. The instrument hole forming punch 43 is driven by the third lifting and flipping mechanism 42, which is installed on the outside of the slider of the third horizontal linear guide pair 41, to perform vertical lifting or horizontal flipping actions. The structure of the third lifting and flipping mechanism 42 is the same as that of the first lifting and flipping mechanism 22.

[0077] like Figures 12-13As shown, the third punching assembly 5 includes a fourth horizontal linear guide pair 51, a fourth lifting and flipping mechanism 52, a mounting base 53, a heat dissipation hole forming punch 54, a grinding drive motor 55, and a transmission shaft 56. The mounting base 53 is driven by the fourth lifting and flipping mechanism 52, which is installed on the outside of the slider of the fourth horizontal linear guide pair 51, to perform vertical lifting or horizontal flipping actions. The structure of the fourth lifting and flipping mechanism 52 is the same as that of the first lifting and flipping mechanism 22.

[0078] The bottom end of the heat dissipation hole forming punch 54 is provided with a ring cutting edge 541, the outer side is provided with a grinding layer 542, and the top end is provided with a worm gear 543 that is movable and restricted in the mounting base 53. Multiple drive shafts 56 are installed side by side in the mounting base 53. Multiple worm segments 561 that mesh with the worm gears 543 on both sides are provided on the drive shafts 56. The outer end of the drive shaft 56 is provided with an anti-slip pulley 562. Adjacent anti-slip pulleys 562 are connected by an anti-slip synchronous belt. The output end of the grinding drive motor 55 is provided with a drive pulley, which is connected to an anti-slip pulley 562, which serves as the driving pulley, via an anti-slip synchronous belt.

[0079] like Figure 14 As shown, the dustproof component pressing assembly 6 includes a fifth horizontal linear guide rail pair 61, a fifth lifting and flipping mechanism 62, and a suction cup 63. The suction cup 63 is driven by the fifth lifting and flipping mechanism 62, which is installed on the outside of the slider of the fifth horizontal linear guide rail pair 61, to perform vertical lifting or horizontal flipping actions. The structure of the fifth lifting and flipping mechanism 62 is the same as that of the first lifting and flipping mechanism 22. The lower side of the suction cup 63 is provided with several suction holes. The shape of the suction cup 63 matches the shape of the mounting plate 881 in the dustproof component 88. The lower side of the suction cup 63 is provided with several suction holes, and the position of the suction holes is staggered from the position of the through holes reserved in the mounting plate 881.

[0080] like Figures 15-16 As shown, the mounting base welding assembly 7 includes a sixth horizontal transverse linear guide pair 71, a hopper 72, a pressure push rod 73, a pressure block 74, a feeding drive screw 75, a feeding push plate 76, and an adjustable tilt welding head 77. The sixth horizontal transverse linear guide pair 71 is arranged laterally, and the hopper 72 and the pressure push rod 73 are installed on the outside of its slider. The hopper 72 has a storage cavity 721 inside to facilitate the side-by-side storage of mounting bases 89. One end of the storage cavity 721 has symmetrical through holes 722. A spring plunger 723 for supporting the mounting base 89 is embedded in the inner wall of the lower through hole 722 of the hopper 72. The movable end of the pressure push rod 73 is equipped with a pressure block 74 that can enter the storage cavity 721 from the upper through hole 722.

[0081] The feeding drive screw 75 is located above the hopper 72. The feeding drive screw 75 is sleeved on the outside of the feeding push plate 76 that extends into the storage cavity 721. The feeding push plate 76 can be horizontally displaced along the length of the storage cavity 721 under the drive of the feeding drive screw 75.

[0082] The adjustable tilt welding head 77 includes a second rotary actuator 771, a horizontal plate 772, a tilt adjustment push rod 773, a connecting plate 774, a movable plate 775, and a welding head 776. The fixed ring of the second rotary actuator 771 is installed on the periphery of the lower through hole 722 in the hopper 72. The tilt adjustment push rod 773 is installed on the moving ring of the second rotary actuator 771 via the horizontal plate 772. One end of the connecting plate 774 is hinged to the movable end of the tilt adjustment push rod 773, and the other end of the connecting plate 774 is fixed to the inner side of one end of the movable plate 775. The other end of the movable plate 775 is hinged to the horizontal plate 772.

[0083] In this embodiment, a controller is also included. The controller is connected to the material loading assembly 1, the surface stamping and shaping assembly 2, the first punching assembly 3, the second punching assembly 4, the third punching assembly 5, the dustproof component pressing assembly 6, and the mounting base welding assembly 7. The controller is connected to the back-end terminal through a wireless communication module.

[0084] The workflow of this production line is uniformly scheduled by the controller. The skeleton casting billet 8a is transferred between various stations through the material loading component 1. The specific steps are as follows:

[0085] S1. Feeding and Positioning

[0086] Action: The operator or the loading robot places the skeleton casting billet 8a onto the loading seat 16 of the loading assembly 1.

[0087] Principle: The skeleton positioning groove on the material carrier 16 matches the shape of the billet to achieve initial positioning. The horizontal longitudinal linear guide pair 12 on the material carrier base plate 11 drives the download plate 13 to move, thereby driving the upper carrier plate 15 and the material carrier 16 to move longitudinally to the first station. The first rotary driver 14 can drive the upper carrier plate 15 to rotate as needed to adjust the billet angle to match the machining surface.

[0088] Support: The support wheel and support base work together to ensure smooth longitudinal movement, and the support ring sleeve and support ring work together to ensure coaxiality during rotation.

[0089] S2, End plate surface stamping and shaping

[0090] Action: The material loading assembly 1 delivers the billet to the area below the surface stamping and shaping assembly 2.

[0091] Principle: The first horizontal linear guide pair 21 drives the first lifting and tilting mechanism 22 to move laterally to the working position. The vertical push rod 222 pushes the connecting shaft 224 down. If the end plate 84 is at an angle, the tilting motor 225 starts, and through the engagement of the driving bevel gear 226 and the driven bevel gear 227, it drives the connecting shaft 224 and the shaping pressure block 23 at the end to tilt to an angle parallel to the end plate. Then the pressure block presses down, completing the surface shaping of the end plate 84.

[0092] S3, End plate waist-shaped hole stamping

[0093] Action: The material loading assembly 1 moves longitudinally to the first punching assembly 3.

[0094] Principle: The process is the same as above. The second lifting and flipping mechanism 32 drives the waist-shaped hole forming punch block 33 to adjust its angle and lift, and punches out the waist-shaped hole 85 on the shaped end plate 84.

[0095] S4, Stamping of instrument holes in enclosed panel area

[0096] Action: The material loading assembly 1 moves to the second punching assembly 4.

[0097] Principle: The third lifting and flipping mechanism 42 drives the instrument hole forming punch 43 to punch out the instrument hole 86 in the closed panel area 82. Since the orientation of the instrument hole 86 may be horizontal or vertical, the flipping mechanism ensures that the orientation of the instrument hole forming punch 43 matches the orientation of the instrument hole 86.

[0098] S5, heat dissipation hole array stamping and self-polishing

[0099] Action: The material loading assembly 1 moves to the third punching assembly 5.

[0100] principle:

[0101] Positioning and pressing: The fourth lifting and flipping mechanism 52 drives the mounting base 53 to descend, so that the multiple heat dissipation hole forming punches 54 are aligned with the heat dissipation hole positions.

[0102] Simultaneous grinding and punching: The grinding drive motor 55 starts, driving the anti-slip pulley 562 to rotate via the drive pulley and anti-slip timing belt, which in turn drives the transmission shaft 56 to rotate. The worm gear section 561 on the transmission shaft 56 meshes with the worm wheel 543 at the top of the punch, causing all the heat dissipation hole forming punches 54 to rotate at high speed.

[0103] Execution: While the punch is pressing down to form the heat dissipation hole array 87, the outer polishing layer 542 rotates with the punch to cut and polish the hole wall, achieving "punching as fine finishing". The bottom circumferential cutting edge 541 is responsible for cutting the material.

[0104] S6, Dustproof component pressing

[0105] Action: At this time, the skeleton semi-finished product 8b is obtained, and the material loading component 1 sends it to the dustproof component pressing component 6.

[0106] Principle: The fifth lifting and flipping mechanism 62 drives the suction cup 63 to pick up the pre-placed dustproof component 88. The suction hole of the suction cup 63 is offset from the through hole of the component mounting plate 881 to ensure stable adhesion without interfering with the internal structure. The suction cup moves above the heat dissipation hole array 87 and presses down to precisely press the dustproof component 88 into place. The internal air guide cover 884, compression spring 885, and dust cover 886, forming a spring valve core, are then installed.

[0107] S7, Automatic Welding of Mounting Base

[0108] Action: The material loading assembly 1 delivers the semi-finished product containing the dustproof components to the mounting base welding assembly 7.

[0109] principle:

[0110] Automatic feeding: The mounting bases 89 are stored side by side in the hopper 72. The spring plunger 723 supports the bottom base through the lower through hole 722. The pressing push rod 73 drives the pressing block 74 to enter through the upper through hole and press the base downward.

[0111] Push: The feeding drive screw 75 rotates, driving the feeding push plate 76 to move horizontally within the storage cavity 721, pushing the single mounting base 89 from the hopper to the predetermined welding position (both sides of the instrument hole or heat dissipation hole).

[0112] Posture adjustment and welding: The second rotary actuator 771 drives the adjustable tilt welding head 77 to rotate as a whole. The tilt adjustment push rod 773 extends and retracts, pushing the movable plate 775 to swing around the hinge point through the connecting plate 774, thereby finely adjusting the tilt angle of the welding head 776 to ensure the welding effect. Finally, the welding operation is performed to firmly weld the mounting base 89 to the frame.

[0113] S8, Material Feeding and Data Interaction

[0114] Action: After all processes are completed, the material loading assembly 1 removes the finished aircraft motor housing outer frame 8.

[0115] Principle: Throughout the process, the controller monitors the status of each component in real time and uploads production data (such as the number of stampings, welding parameters, and fault codes) to the back-end terminal through the wireless communication module to achieve digital management.

[0116] Through the coordinated operation of the aforementioned components, the production line efficiently and precisely completes all key manufacturing processes of the aircraft motor housing outer frame, from casting billet to finished product.

[0117] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A surface treatment and welding production line for an aircraft motor housing outer frame, characterized in that, The system includes a material carrier assembly and, arranged side-by-side on top of it, a surface stamping and shaping assembly, a first punching assembly, a second punching assembly, a third punching assembly, a dustproof component press-fitting assembly, and a mounting base welding assembly. The material carrier assembly positions and places the skeleton casting billet, and can drive it to move horizontally or rotate circumferentially. The surface stamping and shaping assembly performs surface stamping and shaping on the end plates of the skeleton casting billet. The first punching assembly punches and processes oblong holes on the shaped end plates. The second punching assembly punches and processes instrument holes on the closed panel area of ​​the skeleton casting billet. The third punching assembly punches and processes a heat dissipation hole array on the closed panel area of ​​the skeleton casting billet and performs self-grinding. The dustproof component press-fitting assembly punches and installs dustproof components in the heat dissipation hole array. The mounting base welding assembly welds and installs mounting bases on both sides of the instrument holes and the heat dissipation hole array. The surface stamping and shaping assembly includes a first horizontal linear guide pair, a first lifting and flipping mechanism, and a shaping block. The shaping block is driven by the first lifting and flipping mechanism, which is installed on the outside of the slider of the first horizontal linear guide pair, to perform vertical lifting or horizontal flipping actions. The first lifting and tilting mechanism includes a frame, a vertical push rod, a slip ring, a connecting shaft, a tilting motor, a driving bevel gear, and a driven bevel gear. The vertical push rod and the tilting motor are mounted on the frame. The movable end of the vertical push rod is connected to the upper end of the connecting shaft via the slip ring. A shaping block is fixed to the lower end of the connecting shaft. The output end of the tilting motor is equipped with a driving bevel gear. The driven bevel gear is sleeved on the outside of the connecting shaft and forms a steering gear set with the driving bevel gear. A torque transmission keyway is provided on the outside of the connecting shaft, and a torque transmission convex key that mates with the torque transmission keyway is provided on the inner wall of the shaft hole of the driven bevel gear. The third punching assembly includes a fourth horizontal linear guide pair, a fourth lifting and flipping mechanism, a mounting base, a heat dissipation hole forming punch, a grinding drive motor, and a transmission shaft. The mounting base is driven by the fourth lifting and flipping mechanism, which is installed on the outside of the slider of the fourth horizontal linear guide pair, to perform vertical lifting or horizontal flipping actions. The structure of the fourth lifting and flipping mechanism is the same as that of the first lifting and flipping mechanism. The bottom end of the heat dissipation hole forming punch is provided with a ring cutting edge, the outer side is provided with a grinding layer, and the top end is provided with a worm gear that is movable and restricted to the mounting base; multiple drive shafts are installed side by side in the mounting base, and multiple worm segments that mesh with the worm gears on both sides are provided on the drive shafts. The outer end of the drive shaft is provided with an anti-slip pulley, and two adjacent anti-slip pulleys are connected by an anti-slip synchronous belt. The output end of the grinding drive motor is provided with a drive pulley, and the drive pulley is connected to an anti-slip pulley that serves as the driving pulley via the anti-slip synchronous belt.

2. The surface treatment and welding production line for the outer frame of an aircraft motor housing according to claim 1, characterized in that, The frame of the skeleton casting billet has a closed panel area and multiple open panel areas, and the edge of the open panel area is provided with an end plate; After the end plate of the skeleton casting billet is subjected to surface stamping and shaping, waist-shaped holes are then stamped on the end plate, and instrument holes and heat dissipation hole arrays are stamped in the closed panel area to obtain the skeleton semi-finished product. After dustproof components are added to the heat dissipation hole array of the semi-finished skeleton, mounting bases are welded and installed on both sides of the instrument hole and the heat dissipation hole array to obtain the outer skeleton of the aircraft motor box.

3. The surface treatment and welding production line for the outer frame of an aircraft motor housing according to claim 2, characterized in that, The dustproof component includes a mounting plate. One side of the mounting plate is provided with a protruding tube corresponding to the heat dissipation hole array. The inner wall of the protruding tube is provided with a retaining ring. The inner and outer sides of the retaining ring are respectively equipped with an air guide cover and a dust cover connected by a compression spring. The air guide cover is provided with an air guide hole communicating with the inner cavity of the retaining ring. The outer diameter of the dust cover is smaller than the diameter of the cavity in which it is located.

4. The surface treatment and welding production line for the outer frame of an aircraft motor housing according to claim 3, characterized in that, The material loading assembly includes a material loading base plate, a horizontal and vertical linear guide pair, a download plate, a first rotary driver, an upper loading plate, and a material loading seat. The slide rail of the horizontal and vertical linear guide pair is fixed on the material loading base plate. The download plate is mounted on the upper side of the slider of the horizontal and vertical linear guide pair. The download plate is supported by the upper loading plate via the first rotary driver. The material loading seat is mounted on the upper side of the upper loading plate. The upper side of the material loading seat has an inwardly formed skeleton positioning groove that matches the shape of the skeleton casting billet. The bottom surface of the material loading seat located in the skeleton positioning groove has a stamping clearance groove corresponding to the positions of the waist-shaped hole, instrument hole, and heat dissipation hole array.

5. The surface treatment and welding production line for the outer frame of an aircraft motor housing according to claim 4, characterized in that, The first punching assembly includes a second horizontal linear guide pair, a second lifting and flipping mechanism, and a waist-shaped hole forming punch. The waist-shaped hole forming punch is driven by the second lifting and flipping mechanism installed on the outside of the slider of the second horizontal linear guide pair to perform vertical lifting or horizontal flipping actions. The structure of the second lifting and flipping mechanism is the same as that of the first lifting and flipping mechanism.

6. The surface treatment and welding production line for the outer frame of an aircraft motor housing according to claim 5, characterized in that, The second punching assembly includes a third horizontal linear guide pair, a third lifting and flipping mechanism, and an instrument hole forming punch. The instrument hole forming punch is driven by the third lifting and flipping mechanism, which is installed on the outside of the slider of the third horizontal linear guide pair, to perform vertical lifting or horizontal flipping actions. The structure of the third lifting and flipping mechanism is the same as that of the first lifting and flipping mechanism.

7. The surface treatment and welding production line for the outer frame of an aircraft motor housing according to claim 6, characterized in that, The dustproof component pressing assembly includes a fifth horizontal linear guide rail pair, a fifth lifting and flipping mechanism, and a suction cup. The suction cup is driven by the fifth lifting and flipping mechanism, which is installed on the outside of the slider of the fifth horizontal linear guide rail pair, to perform vertical lifting or horizontal flipping actions. The structure of the fifth lifting and flipping mechanism is the same as that of the first lifting and flipping mechanism. The lower side of the suction cup is provided with several suction holes. The shape of the suction cup matches the shape of the mounting plate in the dustproof component. The lower side of the suction cup is provided with several suction holes, and the positions of the suction holes are staggered from the positions of the through holes reserved on the mounting plate.

8. The surface treatment and welding production line for the outer frame of an aircraft motor housing according to claim 7, characterized in that, The mounting base welding assembly includes a sixth horizontal transverse linear guide pair, a hopper, a pressure push rod, a pressure block, a feeding drive screw, a feeding push plate, and an adjustable tilt welding head. The hopper and the pressure push rod are installed on the outer side of the slider of the sixth horizontal transverse linear guide pair. The hopper has a storage cavity for storing mounting bases side by side. One end of the storage cavity has symmetrical through holes. A spring plunger for supporting the mounting base is embedded in the inner wall of the lower through hole of the hopper. The movable end of the pressure push rod is equipped with a pressure block that can enter the storage cavity from the upper through hole. The feeding drive screw is located above the hopper, and a feeding push plate extending into the storage cavity is sleeved on the outside of the feeding drive screw. The feeding push plate can be horizontally displaced along the length of the storage cavity under the drive of the feeding drive screw. The adjustable tilt welding head includes a second rotary drive, a horizontal plate, a tilt adjustment push rod, a connecting plate, a movable plate, and a welding head. The fixed ring of the second rotary drive is installed on the periphery of the lower through hole of the hopper. The tilt adjustment push rod is installed on the moving ring of the second rotary drive via the horizontal plate. One end of the connecting plate is hinged to the movable end of the tilt adjustment push rod, and the other end of the connecting plate is fixed to the inner side of one end of the movable plate. The other end of the movable plate is hinged to the horizontal plate.

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