Self-adaptive numerical control positioner suitable for inside and outside conversion of super wallboard of aircraft

Abstract

The utility model relates to a self-adaptive numerical control positioner suitable for inside and outside conversion of a super wallboard of an aircraft, and belongs to the technical field of aerospace manufacturing technologies. The self-adaptive numerical control positioner comprises a plurality of sets of racks and a plurality of sets of inside and outside conversion devices, the inside and outside conversion device comprises a shell, a crawling ladder detachably connected to one side of the shell and a lifting device arranged on the shell, the lifting device comprises a lead screw mechanism and a driving device, the driving device is installed at the top of the shell, one end of the lead screw mechanism is installed on the rack, and the other end of the lead screw mechanism is detachably connected with the shell; the driving device is connected with the lead screw mechanism, the driving device provides rotating power for the lead screw mechanism, a sliding platform is arranged on the lead screw mechanism and the shell, two sets of guide sliding devices are arranged between the sliding platform and the shell, and two sets of limiting devices are arranged on the shell on one side of the lead screw mechanism; the method has the technical effect of high positioning precision.

Description

Technical Field

[0001] This application relates to the technical field of aerospace manufacturing technology, and in particular to an adaptive CNC positioner suitable for the inward and outward conversion of aircraft super panel. Background Technology

[0002] As a core component of key parts such as fuselage and wings, aircraft super panels are characterized by large size, complex structure, extremely high precision requirements, and thin walls that are easily deformed. Their manufacturing process requires multiple internal and external conversion operations, from internal surface processing to external surface treatment, and from component assembly to overall docking.

[0003] Traditional dedicated positioning fixtures are custom-made for specific models of super panels. Their structure is fixed and can only be used for positioning panels of the corresponding model. Once the aircraft model is upgraded or the panel design is changed, these dedicated fixtures will immediately become ineffective. Moreover, they mostly rely on manual assistance or semi-automated equipment, using mechanical limits and manual adjustments, which makes it difficult to eliminate accumulated errors. They are also greatly affected by the operator's experience, which can easily lead to panel positioning deviations, affecting subsequent assembly accuracy and product quality.

[0004] Regarding the aforementioned technologies, the applicant believes that they suffer from insufficient positioning accuracy. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides an adaptive CNC positioner suitable for the inward and outward conversion of aircraft super panel.

[0006] This application provides an adaptive CNC positioner suitable for the inward and outward conversion of aircraft super panel, which adopts the following technical solution:

[0007] An adaptive CNC positioner for converting aircraft super panel interiors and exteriors includes multiple frames and multiple interior / exterior conversion devices. Each interior / exterior conversion device is fixedly connected to a frame and includes a housing, a ladder detachably connected to one side of the housing, and a lifting device mounted on the housing. The lifting device includes a lead screw mechanism and a drive device. The drive device is mounted on the top of the housing. One end of the lead screw mechanism is mounted on the frame, and the other end is detachably connected to the housing. The drive device is connected to the lead screw mechanism and provides rotational power to the lead screw mechanism. A sliding platform is provided on the lead screw mechanism and the housing. Two sets of guide sliding devices are provided between the sliding platform and the housing. Two sets of limiting devices are provided on one side of the housing of the lead screw mechanism.

[0008] By adopting the above technical solution, the combination of multiple frames and multiple sets of internal and external conversion devices, with the internal and external conversion devices fixedly connected to the frames, allows for flexible configuration adjustments based on the size, curvature, and other specifications of the aircraft's super panel. Whether it is a small panel or a large integrated panel, precise positioning is achieved by adjusting the layout. The combination of the drive device and the lead screw mechanism in the lifting device forms a high-precision transmission chain from power output to displacement conversion. The precise control of the drive device, combined with the micron-level transmission precision of the lead screw mechanism, and the coordination of the sliding platform and the guide sliding device, ensures that the sliding platform has no offset or shaking during the lifting process, and the positioning error can be controlled within a very small range, meeting the stringent positioning accuracy requirements of the aircraft's super panel. Two sets of limit devices on the shell work in conjunction with the sliding platform to monitor the position in real time and provide feedback, triggering warnings and braking when approaching the limit position.

[0009] Preferably, the lead screw mechanism includes a ball screw, two sets of ball bearings and two sets of bearing housings. The ball screw is equipped with ball bearings and bearing housings at both ends. The ball screw is rotatably connected to the bearing housings through the ball bearings. One set of bearing housings is detachably connected to the frame, and the other set of bearing housings is detachably connected to the housing.

[0010] By adopting the above technical solution, the ball screw achieves transmission through the rolling friction between the balls and the screw and nut. Compared with the traditional sliding screw, the friction coefficient is extremely small and the transmission gap can be eliminated by preload, which can achieve micron-level positioning accuracy. It is suitable for the stringent positioning accuracy requirements when the super panel of an aircraft is converted from inside to outside. Two sets of ball bearings and two sets of bearing seats fix and support the two ends of the ball screw respectively, forming a fixed installation method at both ends. This structure can effectively suppress the deflection deformation of the screw when it rotates at high speed or is subjected to axial load.

[0011] Preferably, the drive device includes a reducer, a coupling, and a servo motor. The working end of the servo motor is connected to the reducer via the coupling. The base of the servo motor is detachably connected to the housing. The working end of the reducer is connected to a ball screw. The base of the reducer is detachably connected to a bearing housing.

[0012] By adopting the above technical solutions, the servo motor has high-precision speed and position control capabilities. It can receive pulse signals through the CNC system to accurately control the rotation angle and speed. It can adjust the output power in real time according to the positioning requirements of the aircraft's super panel inward and outward conversion to ensure the accuracy of the lifting action. The reducer works in conjunction with the servo motor to convert the high speed of the servo motor into low speed and high torque output, which meets the requirements of the ball screw drive sliding platform and load.

[0013] Preferably, the sliding platform includes a sliding plate, a moving platform, and a connecting block. One end of the connecting block is detachably connected to the moving part of the ball screw, and the other end of the connecting block is connected to one side of the sliding plate. Both sides of the sliding plate are connected to guide sliding devices. The moving platform is fixedly connected to the other side of the sliding plate, and a fixing component is provided on the top of the moving platform.

[0014] By adopting the above technical solution, one end of the connecting block is detachably connected to the moving part of the ball screw, and the other end is connected to the sliding plate, forming a rigid transmission path from the screw drive to the sliding platform, directly converting the precise displacement of the ball screw into the linear motion of the sliding plate. The two sides of the sliding plate are connected to the guide sliding device. Combined with the constraint of the guide device, the sliding plate always moves along the preset trajectory during the lifting process. The fixed component is used to clamp the workpiece.

[0015] Preferably, the guide sliding device includes two sets of sliders and a linear guide rail. The linear guide rail is longitudinally and detachably connected to the housing. The two sets of sliders are mounted on the linear guide rail and are slidably connected to the linear guide rail. The tops of the two sets of sliders are detachably connected to the sliding plate.

[0016] By adopting the above technical solution, two sets of sliders are symmetrically installed on the linear guide rail and connected to one side of the sliding plate to form a support structure. The sliders move in a pure linear motion along the linear guide rail, which evenly distributes the weight of the sliding platform and the workpiece onto the linear guide rail, avoiding guide rail deformation or slider wear caused by single-point force.

[0017] Preferably, a baffle assembly is provided on the bottom of the connecting block, one end of the baffle assembly is fixedly connected to the connecting block, and the other end of the baffle assembly is detachably connected to the sliding plate.

[0018] By adopting the above technical solution, the baffle assembly moves synchronously with the connecting block and the sliding platform. When the sliding platform approaches the limit position of its movement range, the baffle assembly will contact the limiting device on the housing or trigger a signal, thereby forcibly restricting the sliding platform from continuing to move through an electronically controlled shutdown.

[0019] Preferably, the limiting device includes a displacement sensor and a contact device, wherein the displacement sensor is detachably connected to the housing, and the contact device is connected to the displacement sensor.

[0020] By adopting the above technical solution, the displacement sensor can capture the position change of the contact device in real time, convert the physical displacement into an electrical signal and feed it back to the CNC system, so as to realize high-precision monitoring of the movement position of the sliding platform. The contact device and the displacement sensor work together so that when the sliding platform moves to the set position, the contact device can quickly trigger the sensor to send a signal. The response time is short and the drive device can be controlled to decelerate or stop in time.

[0021] Preferably, the sliding plate is provided with two sets of bellows-type telescopic protective covers at both ends. One end of a single set of bellows-type telescopic protective covers is detachably connected to the housing, and the other end of the bellows-type telescopic protective cover is detachably connected to the upper end of the sliding plate. One end of the other set of bellows-type telescopic protective covers is detachably connected to the lower end of the sliding plate, and the other end of the bellows-type telescopic protective cover is detachably connected to the frame.

[0022] By adopting the above technical solution, the bellows-type telescopic protective cover is made of multi-layered folded wear-resistant material, which has good sealing performance. The two sets of protective covers cover the gaps between the upper and lower ends of the sliding plate and the shell and frame, respectively, which can effectively block external dust, metal debris, coolant and other impurities from entering the guide sliding device and lead screw mechanism.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] Ball screws achieve transmission through rolling friction between balls, screw, and nut. Compared to traditional sliding screws, they have a very low coefficient of friction and the transmission gap can be eliminated by preload, enabling micron-level positioning accuracy. This makes them suitable for the stringent positioning accuracy requirements when converting aircraft super panels inward or outward. Two sets of ball bearings, along with two sets of bearing seats, provide fixed support to both ends of the ball screw, forming a fixed-end installation method. This structure effectively suppresses deflection deformation of the screw when it rotates at high speed or is subjected to axial loads.

[0025] The displacement sensor can capture the position changes of the contact device in real time, convert the physical displacement into an electrical signal and feed it back to the CNC system, so as to realize high-precision monitoring of the movement position of the sliding platform. The contact device and the displacement sensor work together so that when the sliding platform moves to the set position, the contact device can quickly trigger the sensor to send a signal. The response time is short and the drive device can be controlled to decelerate or stop in time. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0027] Figure 2 This is a schematic diagram of the internal and external conversion device in the embodiment.

[0028] Figure 3 This is a schematic diagram of the internal structure of the outer shell in the embodiment.

[0029] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Internal / external conversion device; 21. Housing; 22. Ladder; 23. Lifting device; 231. Screw mechanism; 2311. Ball screw; 2312. Ball bearing; 2313. Bearing housing; 232. Drive device; 2321. Reducer; 2322. Coupling; 2323. Servo motor; 24. Sliding platform; 241. Sliding plate; 242. Moving platform; 243. Connecting block; 244. Fixing assembly; 3. Guide sliding device; 31. Slider; 32. Linear guide rail; 4. Baffle assembly; 5. Limiting device; 51. Displacement sensor; 52. Contact device; 6. Bellows-style telescopic protective cover. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses an adaptive CNC positioner suitable for the inward and outward conversion of aircraft superfabricated panels. (Refer to...) Figure 1-3 The system includes multiple sets of frames 1 and multiple sets of internal and external conversion devices 2. Each set of internal and external conversion devices 2 is bolted to a set of frames 1. Each internal and external conversion device 2 includes a housing 21, a ladder 22, and a lifting device 23. One end of the ladder 22 is bolted to one side of the housing 21, and the other end of the ladder 22 is mounted on the frame 1. The lifting device 23 includes a screw mechanism 231 and a drive device 232. The screw mechanism 231 includes a ball screw 2311, two sets of ball bearings 2312, and two sets of bearing seats 2313. The two sets of ball bearings 2312 are respectively installed at both ends of the ball screw 2311. The two ends of the ball screw 2311 are then connected to the two sets of bearing seats 2313 through the ball bearings 2312. The bearing housing 2313 is rotatably connected, and the bearing housing 2313 at one end of the ball screw 2311 is bolted to the housing 21. The bearing housing 2313 at the other end of the ball screw 2311 is bolted to the frame 1. The drive device 232 includes a reducer 2321, a coupling 2322, and a servo motor 2323. The base of the reducer 2321 is mounted on the bearing housing 2313 connected to the housing 21. The working end of the reducer 2321 is connected to the ball screw 2311. The base of the servo motor 2323 is bolted to the housing 21. The working end of the servo motor 2323 is connected to the reducer 2321 through the coupling 2322. The rotation of the servo motor 2323 provides power for the rotation of the ball screw 2311.

[0032] Sliding platforms 24 are provided on both sides of the moving part of the ball screw 2311 and the housing 21. Each sliding platform 24 includes a sliding plate 241, a moving platform 242, and a connecting block 243. One end of the connecting block 243 is bolted to the moving part of the ball screw 2311, and the other end is bolted to one side of the sliding plate 241. The rotation of the ball screw 2311 drives the moving part of the ball screw 2311 to slide longitudinally, causing the sliding plate 241 connected to the moving part of the ball screw 2311 to slide longitudinally. The moving platform 242 is fixedly connected to the other side of the sliding plate 241. A fixing component 244 is provided on the top of the mobile platform 242. The fixing component 244 is connected to the mobile platform 242 by bolts. The fixing component 244 is used to fix the workpiece, so that the workpiece is stable and accurately positioned during the longitudinal movement of the lifting device 23. Two sets of guide sliding devices 3 are provided between the sliding plate 241 and the housing 21. The two sets of guide sliding devices 3 are installed on both sides of the sliding plate 241 and the housing 21. The guide sliding device 3 includes two sets of sliders 31 and linear guide rails 32. The linear guide rails 32 are bolted to the housing 21, and the two sets of sliders 31 are installed on the linear guide rails 32. 31 is slidably connected to the linear guide rail 32. The guide sliding device 3, in conjunction with the lifting device 23, enables the sliding platform 24 to slide stably. A baffle assembly 4 is provided on the bottom of the connecting block 243. One end of the baffle assembly 4 is fixedly connected to the connecting block 243, and the other end of the baffle assembly 4 is bolted to the bottom of the sliding plate 241. The baffle assembly 4 slides with the sliding plate 241. A limit device 5 is provided on the frame 1 on one side of the lifting device 23. The limit device 5 includes a displacement sensor 51 and a contact device 52. The displacement sensor 51 is installed on the housing 21, and the contact device 52 is connected to the displacement sensor through a professional interface. The device 51 is connected, and the baffle assembly 4 moves to the contact device 52 and stops or returns via the electric control of the sliding platform 24. Two sets of bellows-type telescopic protective covers 6 are provided at both ends of the sliding plate 241. One end of a single set of bellows-type telescopic protective covers 6 is bolted to the housing 21, and the other end of the bellows-type telescopic protective cover 6 is bolted to the upper end of the sliding plate 241. One end of the other set of bellows-type telescopic protective covers 6 is bolted to the lower end of the sliding plate 241, and the other end of the bellows-type telescopic protective cover 6 is bolted to the frame 1. The bellows-type telescopic protective covers 6 extend and retract by the longitudinal movement of the sliding plate 241.

[0033] The working principle of the adaptive CNC positioner for the inward and outward conversion of aircraft super panel in this application is as follows: After the servo motor 2323 starts, it transmits power to the reducer 2321 through the coupling 2322. After the reducer 2321 adjusts the speed and torque, it drives the ball screw 2311 to rotate. The two ends of the ball screw 2311 are connected to the bearing seat 2313 through ball bearings 2312. One end of the ball screw 2311 is fixed to the housing 21, and the other end is fixed to the frame 1. The rotation direction and speed are precisely controlled by the control signal of the servo motor 2323. When the ball screw 2311 rotates, the nut seat that cooperates with the ball screw 2311 slides longitudinally along the screw axis, and drives the sliding plate 241 to move synchronously through the connecting block 243. The moving platform 242 fixed on the other side of the sliding plate 241 rises and falls with the sliding plate 241. The fixed component 244 on the moving platform 242... The fixed working parts are positioned accurately and stably during the lifting process. The sliding plate 241 and the guide sliding devices 3 on both sides of the housing 21, and the linear guide rail 32 are fixed on the housing 21. The slider 31 is connected to the sliding plate 241. The guide sliding device 3 and the ball screw 2311 work together to form a transmission. When the sliding plate 241 drives the connecting block 243 to lift, the baffle assembly 4 at the bottom of the connecting block 243 moves synchronously. When the baffle assembly 4 touches the contact device 52 on the frame 1, the displacement sensor 51 receives the signal and, through the electric control command, makes the servo motor 2323 stop rotating or run in reverse, thereby controlling the sliding platform 24 to stop lifting or return to the initial position, realizing precise limit of the lifting stroke. The bellows-type telescopic protective cover 6 at both ends of the sliding plate 241 extends and retracts synchronously with the movement of the sliding plate 241, blocking dust from entering the equipment and protecting the core components such as the lifting device 23 from contamination.

[0034] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adaptive CNC positioner suitable for the inward and outward conversion of aircraft super panel, characterized in that: The system includes multiple sets of frames (1) and multiple sets of internal and external conversion devices (2). The internal and external conversion devices (2) are fixedly connected to the frames (1). Each internal and external conversion device (2) includes a housing (21), a ladder (22) detachably connected to one side of the housing (21), and a lifting device (23) installed on the housing (21). The lifting device (23) includes a lead screw mechanism (231) and a drive device (232). The drive device (232) is installed on the top of the housing (21), and one end of the lead screw mechanism (231) is installed on the frame. (1) The other end of the lead screw mechanism (231) is detachably connected to the housing (21). The drive device (232) is connected to the lead screw mechanism (231). The drive device (232) provides rotational power to the lead screw mechanism (231). A sliding platform (24) is provided on the lead screw mechanism (231) and the housing (21). Two sets of guide sliding devices (3) are provided between the sliding platform (24) and the housing (21). Two sets of limiting devices (5) are provided on the housing (21) on one side of the lead screw mechanism (231).

2. The self-adapting CNC positioner for converting inside and outside of the super panel of the aircraft according to claim 1, wherein: The lead screw mechanism (231) includes a ball screw (2311), two sets of ball bearings (2312) and two sets of bearing seats (2313). The ball screw (2311) is equipped with ball bearings (2312) and bearing seats (2313) at both ends respectively. The ball screw (2311) is rotatably connected to the bearing seats (2313) through the ball bearings (2312). One set of bearing seats (2313) is detachably connected to the frame (1), and the other set of bearing seats (2313) is detachably connected to the housing (21).

3. The self-adapting CNC positioner for converting inside and outside of the super panel of the aircraft according to claim 1, wherein: The drive device (232) includes a reducer (2321), a coupling (2322), and a servo motor (2323). The working end of the servo motor (2323) is connected to the reducer (2321) through the coupling (2322). The base of the servo motor (2323) is detachably connected to the housing (21). The working end of the reducer (2321) is connected to the ball screw (2311). The base of the reducer (2321) is detachably connected to the bearing seat (2313).

4. The self-adapting CNC positioner for converting inside and outside of the super panel of the aircraft according to claim 1, wherein: The sliding platform (24) includes a sliding plate (241), a moving platform (242), and a connecting block (243). One end of the connecting block (243) is detachably connected to the moving part of the ball screw (2311), and the other end of the connecting block (243) is connected to one side of the sliding plate (241). Both sides of the sliding plate (241) are connected to the guide sliding device (3). The moving platform (242) is fixedly connected to the other side of the sliding plate (241), and a fixing component (244) is provided on the top of the moving platform (242).

5. The self-adapting CNC positioner for converting inside and outside of the super panel of the aircraft according to claim 1, wherein: The guide sliding device (3) includes two sets of sliders (31) and a linear guide rail (32). The linear guide rail (32) is longitudinally detachably connected to the housing (21). The two sets of sliders (31) are mounted on the linear guide rail (32). The sliders (31) are slidably connected to the linear guide rail (32). The tops of the two sets of sliders (31) are detachably connected to the sliding plate (241).

6. An adaptive CNC positioner for converting between inside and outside of a super panel of an aircraft according to claim 4, wherein: A baffle assembly (4) is provided on the bottom of the connecting block (243). One end of the baffle assembly (4) is fixedly connected to the connecting block (243), and the other end of the baffle assembly (4) is detachably connected to the sliding plate (241).

7. The self-adapting CNC positioner for converting inside and outside of the super panel of the aircraft according to claim 1, wherein: The limiting device (5) includes a displacement sensor (51) and a contact device (52). The displacement sensor (51) is detachably connected to the housing (21), and the contact device (52) is connected to the displacement sensor (51).

8. The self-adapting CNC positioner for converting inside and outside of the super panel of the aircraft according to claim 4, wherein: The sliding plate (241) is provided with two sets of bellows-type telescopic protective covers (6) at both ends. One end of a single set of bellows-type telescopic protective covers (6) is detachably connected to the housing (21), and the other end of the bellows-type telescopic protective cover (6) is detachably connected to the upper end of the sliding plate (241). One end of the other set of bellows-type telescopic protective covers (6) is detachably connected to the lower end of the sliding plate (241), and the other end of the bellows-type telescopic protective cover (6) is detachably connected to the frame (1).

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