An automatic isothermal test platform based on visual positioning

Abstract

The application relates to the technical field of aircraft parts, in particular to an automatic isothermal test platform based on visual positioning, which comprises a workbench, the top of the workbench is respectively fixedly provided with a side plate one, a side plate two and a constant-temperature test station, the top of the side plate one is fixedly provided with a mechanical arm, the mechanical arm is respectively fixedly provided with a high-definition camera and a clamping jaw, a pair of baffles is slidably arranged on the constant-temperature test station, the top of the side plate one is fixedly connected with a mounting bracket, the mounting bracket is fixedly provided with a global camera, and the application further comprises a dismounting assembly and a driving assembly. Through the cooperative arrangement of the constant-temperature test station and other components, compared with the test in the prior art, the global camera captures the rough position of the parts, the high-definition camera confirms the accurate posture, the mechanical arm is driven to transfer under the control of a host computer, the automatic operation of the whole test process is realized, manual intervention is reduced, manual operation errors and pollution are further avoided, and the test positioning precision is improved.

Description

Technical Field

[0001] This invention relates to the field of aircraft component technology, and in particular to an automatic isothermal testing bench based on visual positioning. Background Technology

[0002] Civil aviation components refer to parts and airborne equipment used on civil aircraft to ensure flight safety. They are also known as aviation materials. The deviations of conventional variable temperature testing do not meet the stringent airworthiness control requirements. In order to accurately obtain the performance parameters of components under constant temperature, isothermal testing is required to provide reliable data support for the airworthiness certification of aviation materials.

[0003] In existing technologies, when conducting isothermal testing on civil aviation components, a multi-axis robotic arm driven by a servo drive unit is used to manually operate the components to be sorted and transported to a sealed, temperature-controlled testing chamber. However, due to the positioning deviation of the components during the manual operation, the temperature stability and cleanliness of the testing environment are affected, which in turn leads to inconsistent test data and ultimately restricts the improvement of the reliability of the isothermal test results. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that in the existing technology, the positioning deviation of component transfer during the manual operation process affects the constant temperature stability and cleanliness of the test environment, which in turn leads to the consistency deviation of test data and ultimately restricts the improvement of the reliability of isothermal test results. Therefore, an automatic isothermal test platform based on vision positioning is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic isothermal testing platform based on vision positioning includes a workbench, on the top of which a first side plate, a second side plate, and a constant temperature testing station are fixedly installed. A robotic arm is fixedly installed on the top of the first side plate, and a high-definition camera and grippers are fixedly installed on the robotic arm. A pair of baffles are slidably arranged on the constant temperature testing station. A mounting frame is fixedly connected to the top of the first side plate, and a global camera is fixedly installed on the mounting frame. The platform also includes... The disassembly and assembly components facilitate quick assembly and disassembly of the grippers by the staff. A drive component is used to drive the two baffles in a pair to slide synchronously relative to each other horizontally.

[0006] Preferably, the disassembly / assembly assembly includes: A fixing plate is fixedly connected to the robotic arm. The socket is fixedly connected to the underside of the mounting plate. A telescopic rod is installed inside the socket. Fixed plates are fixedly connected to both ends of the telescopic rod; A spring is sleeved on the telescopic rod, and both ends of the spring are fixedly connected to the two fixed discs respectively.

[0007] Preferably, the disassembly / assembly assembly further includes: The plug rod is fixedly connected to the fixed plate, and the plug rod and the socket are horizontally slidably inserted into each other; The slider is slidably connected to the socket, and the slider and the gripper are fixedly connected. Limiting blocks, in pairs, are fixedly connected to the slider.

[0008] Preferably, the socket has a groove for facilitating the horizontal sliding of the slider, a limiting groove for facilitating the horizontal sliding of the limiting block, and a slot for facilitating the horizontal sliding insertion of the plug rod.

[0009] Preferably, the driving component includes: Connecting ears, a pair of connecting ears are fixedly connected to the vertical side wall of the constant temperature test station; A bidirectional lead screw, which is rotatably connected to the connecting lug; A vertical rod is fixedly connected below the baffle. A transmission rod is fixedly connected to the end of the vertical rod, and the transmission rod and the bidirectional lead screw are threaded together.

[0010] Preferably, the driving component further includes: A rectangular plate is fixedly connected to the vertical side wall of the constant temperature testing station. The motor is fixedly connected to the rectangular plate; Gear 1 is fixedly connected to the output end of the motor. Gear 2 is fixedly sleeved on the bidirectional lead screw, and gear 2 meshes with gear 1.

[0011] Preferably, anti-detachment blocks are fixedly connected to both ends of the bidirectional lead screw.

[0012] Preferably, temperature sensors and heating / cooling elements are fixedly installed in the constant temperature testing station.

[0013] Preferably, a main control computer is fixedly installed on the top of the workbench, and the main control computer is electrically connected to the global camera, the robotic arm, the high-definition camera and the constant temperature testing station.

[0014] Preferably, a support rod for supporting the second side plate is fixedly connected to the workbench, and qualified and unqualified bins are respectively fixedly installed on the top of the second side plate.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: 1. This invention utilizes the combination of a global camera and a high-definition camera. The global camera captures the approximate position of the components, while the high-definition camera confirms the precise posture. Under the control of the main control computer, the robotic arm is driven to move the components, realizing fully automated operation of the testing process, reducing human intervention, thereby further avoiding human operation errors and contamination, and improving the testing positioning accuracy.

[0016] 2. This invention utilizes a combination of temperature sensors and heating / cooling elements, along with a drive assembly to activate a baffle-sealed workstation, to monitor and compensate for temperature deviations in real time. This achieves a stable and constant temperature environment for testing, ensuring data reliability. Furthermore, it complements automated processes to improve testing efficiency and data consistency.

[0017] 3. This invention utilizes the combination of a fixed plate and a spring, along with the action of a slider and a limiting block, to allow for the replacement of grippers simply by pressing and sliding. Combined with a robotic arm for automatic sorting of qualified and unqualified parts, this invention enables convenient equipment maintenance and automated sorting, thereby further improving testing continuity and overall operating efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic isothermal testing platform based on vision positioning proposed in this invention. Figure 2 This is a schematic diagram of a robotic arm in an automated isothermal testing platform based on vision positioning proposed in this invention. Figure 3 This is a schematic diagram of the fixing plate and socket in an automatic isothermal testing bench based on vision positioning proposed in this invention; Figure 4 This is a schematic diagram of the constant temperature testing station in an automatic isothermal testing bench based on vision positioning proposed in this invention. Figure 5 for Figure 2 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0019] In the picture: 1. Workbench; 2. Side panel 1; 21. Mounting bracket; 22. Global camera; 23. Robotic arm; 24. High-definition camera; 3. Side panel two; 31. Support rod; 32. Qualified compartment; 33. Unqualified compartment; 4. Fixing plate; 41. Socket; 42. Slide groove; 43. Limiting groove; 44. Slot; 45. Telescopic rod; 46. Spring; 47. Fixing plate; 48. Insert rod; 5. Gripper; 51. Slider; 52. Limiting block; 6. Main control computer; 7. Constant temperature testing station; 71. Baffle; 72. Temperature sensor; 73. Heating and cooling elements; 74. Connecting lug; 75. Two-way lead screw; 751. Rectangular plate; 752. Motor; 753. Gear 1; 754. Gear 2; 76. Vertical rod; 77. Transmission rod; 78. Anti-detachment block. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figures 1-6 An automated isothermal testing platform based on vision positioning includes a workbench 1, which serves as the basic component of the equipment, supporting all installation components and providing a stable mounting platform to ensure the orderly conduct of testing operations. Side plates 2 and 3, along with a constant-temperature testing station 7, are fixedly mounted on the top of the workbench 1. Side plates 2 and 3 are symmetrically distributed, providing mounting support for the upper components. The constant-temperature testing station 7 is used for conducting isothermal tests on the components. A robotic arm 23 is fixedly mounted on the top of side plate 2. The robotic arm 23 can flexibly extend, retract, and rotate, providing power support for gripping and transferring components. A high-definition camera 24 and a gripper 5 are fixedly mounted on the robotic arm 23. The high-definition camera 24 is used to capture detailed postures of the components, and the gripper 5 is used to grip and transfer the components.

[0022] A pair of baffles 71 are slidably installed on the constant temperature testing station 7. The baffles 71 can slide relative to each other to achieve sealing and opening of the station, ensuring a stable testing environment. A mounting bracket 21 is fixedly connected to the top of the side plate 2. The mounting bracket 21 is used to fix and support the global camera 22 to ensure a comprehensive shooting angle. The global camera 22 is fixedly installed on the mounting bracket 21. The global camera 22 is used to capture the overall position information of the parts on the workbench 1. It also includes; The disassembly and assembly components facilitate quick disassembly and assembly of the gripper 5 by staff. Through the cooperation of multiple components, the gripper 5 can be quickly disassembled and installed, reducing the difficulty of equipment maintenance.

[0023] The drive component is used to drive the two baffles 71 in a pair to slide synchronously relative to each other horizontally, providing power for the sliding of the baffles 71 and realizing the rapid switching of the workstation.

[0024] The assembly and disassembly components include: a mounting plate 4, a socket 41, a telescopic rod 45, a mounting plate 47, and a spring 46.

[0025] The fixing plate 4 is fixedly connected to the robotic arm 23. The fixing plate 4 provides a fixing carrier for the socket 41, so that the assembly and disassembly components are stably connected to the robotic arm 23. The socket 41 is fixedly connected below the fixing plate 4. The socket 41 has an adapter structure inside, which is used to cooperate with the insertion rod 48 to achieve the positioning and installation of the gripper 5.

[0026] The telescopic rod 45 is installed inside the socket 41. The telescopic rod 45 can extend and retract flexibly, driving the fixed plate 47 to move synchronously, providing guidance for the movement of the insertion rod 48. The fixed plate 47 is fixedly connected to both ends of the telescopic rod 45. The fixed plate 47 is used to connect the insertion rod 48 and the spring 46, transmitting the pressing force. The spring 46 is sleeved on the telescopic rod 45, and both ends of the spring 46 are fixedly connected to the two fixed plates 47 respectively. The spring 46 can achieve automatic reset and disengagement of the insertion rod 48 through extension and retraction.

[0027] The assembly and disassembly components also include: insert rod 48, slider 51, and limit block 52.

[0028] The insertion rod 48 is fixedly connected to the fixed plate 47, and the insertion rod 48 and the socket 41 are horizontally slidably inserted into each other. The insertion rod 48 can be inserted into the slot 44 to fix the gripper 5. The slider 51 is slidably connected to the socket 41. The slider 51 can slide along the slide groove 42, driving the limit block 52 to move synchronously, which facilitates subsequent limiting and unlocking. A pair of limit blocks 52 are fixedly connected to the slider 51. The limit blocks 52 are embedded in the limit groove 43 to limit the insertion rod 48 and prevent it from accidentally detaching from the socket 41.

[0029] The socket 41 has a groove 42 for the horizontal sliding of the slider 51, which provides a sliding path for the slider 51 to ensure smooth sliding. A limiting groove 43 is provided within the groove 42 to facilitate the horizontal sliding of the limiting block 52. The limiting groove 43 guides and limits the limiting block 52 to prevent sliding deviation. A slot 44 is provided within the limiting groove 43 to facilitate the horizontal sliding insertion of the insertion rod 48. The slot 44 is adapted to the insertion rod 48 to achieve stable insertion and disengagement of the insertion rod 48.

[0030] The drive assembly includes: a connecting lug 74, a bidirectional lead screw 75, a vertical rod 76, and a transmission rod 77.

[0031] A pair of connecting lugs 74 are fixedly connected to the vertical side wall of the constant temperature testing station 7. The connecting lugs 74 support the bidirectional lead screw 75 to ensure its stable rotation. The bidirectional lead screw 75 is rotatably connected to the connecting lugs 74. When the bidirectional lead screw 75 rotates, it can drive the two transmission rods 77 on both sides to slide synchronously in opposite directions. The vertical rod 76 is fixedly connected to the bottom of the baffle 71. The vertical rod 76 connects the baffle 71 and the transmission rod 77 to transmit the sliding force. The transmission rod 77 is fixedly connected to the end of the vertical rod 76, and the transmission rod 77 is threadedly connected to the bidirectional lead screw 75. The transmission rod 77 can convert the rotation of the lead screw into horizontal sliding.

[0032] The drive assembly also includes: a rectangular plate 751, a motor 752, a first gear 753, and a second gear 754.

[0033] A rectangular plate 751 is fixedly connected to the vertical side wall of the constant temperature testing station 7. The rectangular plate 751 provides a fixed mounting position for the motor 752, ensuring its stable operation. The motor 752 is fixedly connected to the rectangular plate 751 and acts as a power source, driving gear 1 753 to rotate and provide power to the drive assembly. Gear 1 753 is fixedly connected to the output end of the motor 752. When gear 1 753 rotates, it drives the meshing gear 2 754 to rotate synchronously, achieving power transmission. Gear 2 754 is fixedly sleeved on a bidirectional lead screw 75, and it meshes with gear 1 753. Gear 2 754 transmits the power of the motor 752 to the bidirectional lead screw 75.

[0034] Both ends of the bidirectional lead screw 75 are fixedly connected with anti-detachment blocks 78. The anti-detachment blocks 78 can limit the sliding range of the transmission rod 77 and prevent it from detaching from the end of the bidirectional lead screw 75.

[0035] A temperature sensor 72 and a heating / cooling element 73 are fixedly installed in the constant temperature testing station 7. The temperature sensor 72 monitors the temperature in the station in real time, and the heating / cooling element 73 adjusts the temperature to ensure stable testing temperature. The temperature sensor 72 is used to collect the temperature of the target area in real time, and the heating / cooling element 73 is a semiconductor cooling chip that can perform bidirectional heating and cooling actions according to temperature control commands to accurately regulate the temperature. Both are existing mature technologies, so they will not be described in detail here.

[0036] The main control computer 6 is fixedly installed on the top of the workbench 1. The main control computer 6 is electrically connected to the global camera 22, the robotic arm 23, the high-definition camera 24 and the constant temperature test station 7. The main control computer 6 serves as the control core, coordinating and regulating the coordinated operation of all components.

[0037] A support rod 31 is fixedly connected to the workbench 1 to support the second side plate 3. The support rod 31 enhances the installation stability of the second side plate 3 and prevents it from deforming under stress. A qualified compartment 32 and a non-qualified compartment 33 are fixedly installed on the top of the second side plate 3. The qualified compartment 32 and the non-qualified compartment 33 are used to classify and store qualified and non-qualified parts after testing.

[0038] The functional principle of this invention can be explained through the following operational methods: First, the main control computer 6 is started. The main control computer 6 establishes electrical connections with the global camera 22, the robotic arm 23, the high-definition camera 24, and the constant temperature testing station 7. The global camera 22 quickly captures the position information of the civil aviation parts to be tested on the top of the workbench 1 and transmits it to the main control computer 6. After analyzing and processing the position information, the main control computer 6 sends motion commands to the robotic arm 23.

[0039] Next, the robotic arm 23 moves the high-definition camera 24 and gripper 5 to above the part to be tested. The high-definition camera 24 takes close-up pictures of the part to further confirm its specific posture and feeds back to the main control computer 6. The main control computer 6 adjusts the movement trajectory of the robotic arm 23 so that the gripper 5 accurately fits the surface of the part. At the same time, the temperature sensor 72 and the heating and cooling elements 73 in the constant temperature test station 7 are activated to adjust the internal temperature of the station to the preset test temperature and keep it stable.

[0040] Then, the drive assembly is started. When the bidirectional lead screw 75 rotates, it drives the transmission rod 77 to slide horizontally. The transmission rod 77 drives a pair of baffles 71 to slide synchronously relative to each other through the vertical rod 76, so that the opening of the constant temperature test station 7 opens to the appropriate size.

[0041] Next, the robotic arm 23 drives the gripper 5 to transfer the part to be tested to the constant temperature test station 7. The main control computer 6 controls the drive component to run in reverse, so that a pair of baffles 71 move closer to each other and close, thus sealing the constant temperature test station 7. The temperature sensor 72 monitors the temperature in the station in real time. When the temperature deviates by ±0.5℃, the heating and cooling element 73 automatically starts to compensate for the temperature, ensuring that the test environment temperature is stable.

[0042] Finally, after the isothermal test is completed, the main control computer 6 determines whether the parts are qualified based on the test data, and controls the robotic arm 23 to transfer qualified parts to the qualified compartment 32 at the top of the side plate 2 3, and transfer unqualified parts to the unqualified compartment 33.

[0043] If the gripper 5 needs to be replaced, press the fixing plate 47. The fixing plate 47 will cause the telescopic rod 45 to retract, and the spring 46 sleeved on the telescopic rod 45 will retract accordingly. This will cause the insertion rod 48 to disengage from the slot 44 of the socket 41. Then, slide the slider 51 along the slide groove 42 on the socket 41. The slider 51 will cause the limit block 52 to slide along the limit groove 43, and the gripper 5 can be removed from the socket 41 to complete the replacement. This realizes the automated and standardized operation of isothermal testing of civil aviation parts, and improves testing efficiency and data reliability.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic isothermal testing platform based on vision positioning, comprising a workbench (1), characterized in that, The workbench (1) is fixedly installed with side plate 1 (2), side plate 2 (3) and constant temperature test station (7) respectively. A robotic arm (23) is fixedly installed on the top of side plate 1 (2). A high-definition camera (24) and a gripper (5) are fixedly installed on the robotic arm (23). A pair of baffles (71) are slidably arranged on the constant temperature test station (7). A mounting frame (21) is fixedly connected to the top of side plate 1 (2). A global camera (22) is fixedly installed on the mounting frame (21). The workbench (1) also includes: The disassembly and assembly components facilitate quick disassembly and assembly of the grippers (5) by the staff. A drive component is used to drive the two baffles (71) in a pair to slide horizontally relative to each other synchronously.

2. The automatic isothermal testing platform based on vision positioning according to claim 1, characterized in that, The disassembly / assembly components include: Fixed plate (4), fixed plate (4) is fixedly connected to the robotic arm (23); The socket (41) is fixedly connected to the bottom of the fixing plate (4); Telescopic rod (45) is installed inside the socket (41); Fixed plate (47), fixed plate (47) is fixedly connected to both ends of the telescopic rod (45); Spring (46) is sleeved on the telescopic rod (45), and both ends of spring (46) are fixedly connected to the two fixed discs (47) respectively.

3. The automatic isothermal testing platform based on vision positioning according to claim 2, characterized in that, The disassembly / assembly assembly also includes: The plug rod (48) is fixedly connected to the fixed plate (47), and the plug rod (48) and the socket (41) are horizontally slidably plugged in; The slider (51) is slidably connected to the socket (41), and the slider (51) and the gripper (5) are fixedly connected; Limiting blocks (52), a pair of limiting blocks (52) are fixedly connected to the slider (51).

4. The automatic isothermal testing platform based on vision positioning according to claim 3, characterized in that, The socket (41) is provided with a groove (42) to facilitate the horizontal sliding of the slider (51), and a limiting groove (43) to facilitate the horizontal sliding of the limiting block (52) is provided in the groove (42). A slot (44) to facilitate the horizontal sliding insertion of the plug rod (48) is provided in the limiting groove (43).

5. The automatic isothermal testing platform based on vision positioning according to claim 1, characterized in that, The driving component includes: Connecting ears (74), a pair of connecting ears (74) are fixedly connected to the vertical side wall of the constant temperature test station (7); A two-way lead screw (75) is rotatably connected to the connecting lug (74); A vertical rod (76) is fixedly connected below the baffle (71); The transmission rod (77) is fixedly connected to the end of the vertical rod (76), and the transmission rod (77) is threadedly connected to the bidirectional lead screw (75).

6. The automatic isothermal testing bench based on vision positioning according to claim 5, characterized in that, The driving component also includes: A rectangular plate (751) is fixedly connected to the vertical side wall of the constant temperature test station (7); The motor (752) is fixedly connected to the rectangular plate (751); Gear 1 (753) is fixedly connected to the output end of the motor (752); Gear 2 (754) is fixedly sleeved on the bidirectional lead screw (75), and gear 2 (754) meshes with gear 1 (753).

7. An automatic isothermal testing platform based on vision positioning according to claim 6, characterized in that, Both ends of the bidirectional lead screw (75) are fixedly connected with anti-detachment blocks (78).

8. The automatic isothermal testing platform based on vision positioning according to claim 1, characterized in that, Temperature sensors (72) and heating / cooling elements (73) are fixedly installed in the constant temperature test station (7).

9. An automatic isothermal testing platform based on vision positioning according to claim 1, characterized in that, The main control computer (6) is fixedly installed on the top of the workbench (1). The main control computer (6) is electrically connected to the global camera (22), the robotic arm (23), the high-definition camera (24), and the constant temperature test station (7).

10. An automatic isothermal testing platform based on vision positioning according to claim 1, characterized in that, The workbench (1) is fixedly connected to a support rod (31) for supporting the side plate two (3), and the top of the side plate two (3) is fixedly installed with a qualified bin (32) and a non-qualified bin (33).

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