Rapid detection equipment suitable for airplane cabin door contour and use method

Abstract

The invention discloses rapid detection equipment suitable for the appearance contour of an aircraft cabin door and a use method, and belongs to the technical field of aircraft detection, the rapid detection equipment comprises a main body frame, an optical sensor integration module and a control cabinet upper computer, the main body frame is used for positioning the cabin door and providing a detection reference surface, and the optical sensor integration module is installed on the main body frame; the optical sensor integrated module is used for detecting the gap and the order difference between the cabin door skin edge and the detection reference surface through the optical sensor, and the control cabinet upper computer is bidirectionally connected with the optical sensor and used for controlling the optical sensor integrated module, receiving measurement data in real time and calculating and displaying a measurement value. According to the invention, a one-stop solution from cabin door positioning and measurement to data management is realized, and the efficiency and accuracy of the whole cabin door assembly inspection process are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft detection, and relates to a rapid detection device for the outline of an aircraft cabin door and a use method thereof. Background Art

[0002] In the assembly process of large civil aircraft cabin door products, the overall door assembly includes two main parts: structural parts assembly and mechanism parts assembly. After the mechanism assembly is completed, the cabin door needs to be placed on the inspection tooling to carry out functional testing and pre-assembly debugging, so as to simulate the actual aircraft barrel skin surface of the inspection tooling surface, measure the step difference of the cabin door skin outer contour surface and the skin edge gap, and debug the cabin door according to the tolerance requirements of the step difference and gap so that the cabin door product meets the drawing requirements before delivery. The current industry generally adopts the operator to use a digital display vernier caliper for manual physical contact, and complete the data measurement and overall debugging process through visual reading, but there are the following defects:

[0003] (1) Time-consuming:

[0004] Manually operated digital display vernier calipers are required to measure the step difference of the outer contour surface of the hatch skin and the gap between the skin edges point by point. Due to the large area of ​​the hatch and the large number of measurement points, this process is very time-consuming, which seriously affects the overall work efficiency of hatch door commissioning and assembly.

[0005] (2) Low measurement accuracy:

[0006] The measured value is obtained by manually reading the digital display vernier caliper, which is easily affected by the operator's vision, operating techniques (such as whether the caliper is perpendicular to the measuring surface, whether the pressure during measurement is uniform, etc.), and other factors, resulting in low measurement accuracy. In the inspection of aircraft doors, which require extremely high assembly accuracy, this low-accuracy measurement method may miss some doors that do not meet the assembly accuracy requirements, and may also misjudge some qualified doors, posing potential risks to the overall safety and reliability of the aircraft.

[0007] (3) Inconvenient data management:

[0008] This traditional measurement method makes it difficult to automatically record and archive data. Each measurement data needs to be recorded manually, which is not only prone to recording errors, but also has an irregular and incomplete format. This is extremely unfavorable for the long-term tracking and tracing of the hatch assembly quality. When quality problems occur, it is difficult to quickly and accurately analyze the root cause of the problem from historical measurement data, and it is impossible to provide effective data support for improving the assembly process. Summary of the invention

[0009] To solve the above problems, the present invention provides a rapid detection equipment and method for the outer contour of an aircraft door.

[0010] The present invention adopts the following technical solutions:

[0011] A rapid detection equipment for the outer contour of an aircraft door, comprising a main frame, an optical sensor integration module 10 and a control cabinet upper computer 11. The main frame is used to position and fix the door product 6 and provide a detection reference plane 4. The optical sensor integration module 10 is installed on the main frame and is used to detect the gap and step difference between the skin edge of the door product 6 and the detection reference plane 4 on the main frame through an optical sensor. The control cabinet upper computer 11 is bidirectionally connected to the optical sensor in the optical sensor integration module 10 and is used to control the optical sensor integration module 10, receive in real time the measurement data collected by the optical sensor, calculate and display the measurement values.

[0012] The main frame includes a frame base 1, a surrounding frame 2, a door locator 3 and a support foot 5. The frame base 1 is a triangular ground support frame, and support feet 5 are installed at the four corners of its bottom for connecting to the ground for fixation and support. The surrounding frame 2 is designed according to the actual aircraft door frame structure and is fixedly installed on the frame base 1 for fixing the door product 6. The theoretical position of the corresponding door frame digital model at its surface is the detection reference plane 4, which serves as the detection reference for the gap and step difference values after the pre-assembly of the door product 6. The door locator 3 is installed on the surrounding frame 2 and is used for the precise positioning of the door product 6, and is set according to the type of the door product 6.

[0013] The optical sensor integration module 10 includes a gap detection optical sensor 7, a step difference detection optical sensor 8, and a slide rail mechanism 9. A plurality of gap detection optical sensors 7 are provided and are installed at intervals on the surface of the surrounding frame 2 for detecting the gap value between the skin edge of the door product 6 and the detection reference plane 4. The slide rail mechanism 9 includes a slide rail, a slider and a motor. The motor provides power for the slider to move on the slide rail. A plurality of slide rail mechanisms 9 are provided and are installed at intervals on the surface of the surrounding frame 2. Among them, the slide rail is arranged along the tangent direction of the skin of the door product 6 and extends outside the surrounding frame 2. A step difference detection optical sensor 8 is installed on the slider of each slide rail mechanism 9 for detecting the step difference between the skin edge of the door product 6 and the detection reference plane 4. After the door is closed, the slide rail mechanism 9 controls the motor to push the step difference detection optical sensor 8 to the step difference measurement point. The measurement accuracy of the gap detection optical sensor 7 and the step difference detection optical sensor 8 is ±0.02 mm. The number of the gap detection optical sensors 7 and the step difference detection optical sensors 8 and the interval distance are adjusted according to needs.

[0014] The upper computer 11 of the control cabinet is provided with a control system, a display screen, which is equipped with a signal processing algorithm and has a data storage function. It is used to control the switch of the optical sensor integration module 10 and the slide rail mechanism 9, realize the position adjustment of the step difference detection optical sensor 8, precisely process the original signal transmitted by the optical sensor, convert it into step difference and gap values for real-time display, and save the data in the form of a form.

[0015] A usage method of the above-mentioned rapid detection equipment for the outer contour of an aircraft cabin door includes the following steps:

[0016] Step 1, position the cabin door product 6 on the surrounding frame 2 through the cabin door locator 3 and complete the fixation of the cabin door product 6.

[0017] Step 2, start the optical sensor integration module 10 through the upper computer 11 of the control cabinet and adjust the step difference detection optical sensor 8 to the step difference measurement point; taking the detection reference plane 4 as the reference, start to comprehensively and real-time measure the step difference of the outer contour surface of the skin of the cabin door product 6 and the gap at the edge of the skin.

[0018] Step 3, the measurement data of the gap detection optical sensor 7 and the step difference detection optical sensor 8 are transmitted to the upper computer 11 of the control cabinet in real time. The upper computer 11 of the control cabinet performs preprocessing operations such as filtering and denoising on the measurement data to remove possible interference signals during the measurement process, and then converts them into actual step difference and gap values through a signal processing algorithm and displays them on the display screen in real time; according to the real-time values, immediately judge whether the assembly quality of the cabin door product 6 meets the requirements. If the values exceed the pre-set qualified range, adjust the cabin door in time. If the step difference is too large, fine-tune or re-assemble the relevant components; at the same time, all measurement data are stored in the upper computer 11 of the control cabinet for subsequent query and traceability.

[0019] The beneficial effects of the present invention:

[0020] (1) Integrated intelligent tooling design

[0021] This patent integrates the tooling body, optical sensors and the upper computer of the control cabinet together to form a complete intelligent inspection tooling system. This integrated design breaks the situation where the components of traditional inspection tooling are scattered and lack coordination. The tooling body provides a stable installation basis and an accurate measurement reference for the optical sensors. The optical sensors provide high-precision measurement data for the upper computer of the control cabinet. The upper computer of the control cabinet processes, displays and stores the data. The components cooperate with each other closely to achieve a one-stop solution from cabin door positioning, measurement to data management, improving the efficiency and accuracy of the entire cabin door assembly inspection process.

[0022] (2) High efficiency

[0023] Due to the use of an optical sensor for automatic measurement, there is no need for manual point-by-point operation of a digital display vernier caliper, which greatly shortens the measurement time. The entire measurement process can be quickly completed after the cabin door is installed on the tooling. Compared with the traditional method, the work efficiency can be increased by 80%.

[0024] (3) Safety

[0025] A non-contact measurement is carried out using an optical sensor based on advanced optical principles (optical interference measurement principle), avoiding damage such as scratches that may be caused to the surface of the cabin door by traditional contact measurement tools (such as digital display vernier calipers).

[0026] (4) High precision

[0027] The high-precision measurement ability of the optical sensor and the precise processing of data by the upper computer of the control cabinet significantly improve the accuracy of the measurement results. The measurement accuracy can reach ±0.02 mm, effectively avoiding errors caused by manual operation and ensuring the precise detection of the assembly quality of the cabin door. This high-precision measurement can ensure that the fit between the cabin door and the aircraft fuselage reaches the best state after assembly, reducing potential risks such as air leakage and structural stress concentration, and improving the flight safety and comfort of the aircraft.

[0028] (4) Convenience of data management

[0029] The data storage function of the upper computer of the control cabinet completely records the measurement data in the form of a form, which is convenient for querying and tracing. This helps to conduct long-term quality monitoring of the cabin door assembly process. When quality problems occur, the cabin door, measurement location, and assembly link where the problem lies can be quickly located, providing a strong basis for improving the process. For example, if a slight air leakage is found in a certain cabin door during the operation of the aircraft, by querying the stored measurement data, the measurement values during the assembly of the cabin door can be traced, and it can be analyzed that the step difference or gap at a certain specific measurement location may not meet the requirements, so as to improve the assembly process targeted. Description of the drawings

[0030] Figure 1 It is a schematic diagram of the main frame;

[0031] Figure 2 It is a schematic diagram of the optical sensor integration module, where (a) is a schematic diagram of the slide rail mechanism, and (b) is a schematic diagram of the combination of the optical sensor integration module and the main frame;

[0032] Figure 3 It is a schematic diagram of the upper computer of the control cabinet;

[0033] Figure 4 It is a schematic diagram of the overall appearance of a rapid detection equipment suitable for the outer contour of the aircraft cabin door;

[0034] Figure 5 It is a flowchart of the usage method;

[0035] Among them, 1 is the frame base; 2 is the surrounding frame; 3 is the hatch locator; 4 is the detection reference plane; 5 is the support foot; 6 is the hatch product; 7 is the clearance detection optical sensor; 8 is the step difference detection optical sensor; 9 is the slide rail mechanism; 10 is the optical sensor integration module; 11 is the upper computer of the control cabinet. Specific implementation manners

[0036] In order to make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the following will describe the specific implementation manners of the present invention in detail according to the technical solutions.

[0037] A rapid detection equipment suitable for the outer contour of an aircraft hatch includes a main frame, an optical sensor integration module 10 and an upper computer 11 of the control cabinet, as Figure 4 .

[0038] As Figure 1 , the main frame includes a frame base 1, a surrounding frame 2, a hatch locator 3 and support feet 5; the frame base 1 is a triangular ground support frame, and support feet 5 are installed at the four corners of its bottom for connecting to the ground for fixing and supporting; the surrounding frame 2 is designed according to the actual aircraft door frame structure and is fixedly installed on the frame base 1 for fixing the hatch product 6, and the theoretical position of the corresponding door frame digital model at its profile is the detection reference plane 4, which is used as the detection reference for the clearance and step difference values after the pre-assembly of the hatch product 6; the hatch locator 3 is installed on the surrounding frame 2 for precise positioning of the hatch product 6, and it is set according to the type of the hatch product 6. The structure of the surrounding frame 2 is specially customized and designed according to the precise shape and size of the hatch product 6 and can be perfectly matched with the hatch product 6. The hatch locator 3 has strong versatility and flexibility and can be quickly and accurately adjusted according to different models of hatches. This adjustment function ensures that the hatch product 6 is always in the accurate position during the inspection process, provides a stable and consistent reference for the subsequent measurement work, and thus ensures the accuracy and reliability of the measurement results.

[0039] The optical sensor integration module 10 includes a clearance detection optical sensor 7, a step difference detection optical sensor 8, and a slide rail mechanism 9, as Figure 2;There are 18 gap detection optical sensors 7, which are installed at intervals on both side edges and the bottom edge of the profile surface of the enclosure 2. Among them, 7 are symmetrically installed on both side edges, and 4 are installed on the bottom edge, for detecting the gap value between the skin edge of the hatch product 6 and the detection reference surface 4; The slide rail mechanism 9 includes a slide rail, a slider and a motor. The motor provides power for the slider to move on the slide rail. There are also 18 slide rail mechanisms 9, which are installed beside the gap detection optical sensors 7 on the profile surface of the enclosure 2. Among them, the slide rails are arranged along the tangent direction of the skin of the hatch product 6 and extend outside the enclosure 2. A step difference detection optical sensor 8 is installed on the slider of each slide rail mechanism 9, for detecting the step difference between the skin edge of the hatch product 6 and the detection reference surface 4. After the hatch is closed, the slide rail mechanism 9 pushes the step difference detection optical sensor 8 to the step difference measurement point through motor control. The number of the gap detection optical sensors 7 and the step difference detection optical sensors 8 and the interval distance are adjusted according to needs. The layout of the optical sensors is positioned and integrated at the key positions of the enclosure 2 according to the specific requirements of the step difference of the outer contour surface of the hatch skin and the gap detection of the skin edge. The optical sensors adopt advanced optical measurement technology (optical interference measurement principle), which can realize non-contact high-precision measurement. The optical sensors have a high resolution of ±0.02 mm, which is much higher than the accuracy of traditional digital vernier calipers, and can more accurately detect the step difference of the outer contour surface of the skin between the hatch and the detection tooling and the gap of the skin edge.

[0040] The control cabinet upper computer 11 is provided with a control system, a display screen, is equipped with a signal processing algorithm and has a data storage function, for controlling the switch of the optical sensor integration module 10 and the slide rail mechanism 9, realizing the position adjustment of the step difference detection optical sensor 8, precisely processing the original signal transmitted by the optical sensor, converting it into step difference and gap values for real-time display, and saving the data in the form of a form, such as Figure 3 。

[0041] A usage method of the above-mentioned rapid detection equipment suitable for the outer contour of an aircraft hatch is as follows Figure 5 shown, including the following steps:

[0042] Step 1, position the hatch product 6 on the enclosure 2 through the hatch locator 3 and complete the fixation of the hatch product 6.

[0043] Step 2, start the optical sensor integration module 10 through the control cabinet upper computer 11 and adjust the step difference detection optical sensor 8 to the step difference measurement point; Taking the detection reference surface 4 as the reference, start to comprehensively and real-time measure the step difference of the outer contour surface of the skin of the hatch product 6 and the gap of the skin edge. With its high-frequency sampling ability, the optical sensor can obtain a large number of measurement data points in a short time, so as to comprehensively and meticulously reflect the situation of the hatch surface.

[0044] Step 3: The measurement data of the gap detection optical sensor 7 and the step difference detection optical sensor 8 are transmitted to the upper computer 11 of the control cabinet in real time. The upper computer 11 of the control cabinet performs preprocessing operations such as filtering and denoising on the measurement data to remove possible interference signals generated during the measurement process. Then, through a signal processing algorithm, it is converted into actual step difference and gap values and displayed on the display screen in real time. According to the real-time values, immediately judge whether the assembly quality of the hatch product 6 meets the requirements. If the values exceed the preset qualified range, adjust the hatch in time. If the step difference is too large, finely adjust or reassemble the relevant components. At the same time, all measurement data are stored in the upper computer 11 of the control cabinet for subsequent query and traceability. These data are stored in a dedicated database, which adopts a reliable data storage structure and backup mechanism to ensure the security and integrity of the data. Even during long-term use or in case of unexpected situations (such as system failures, power outages, etc.), the data will not be lost or damaged.

[0045] In summary, the above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rapid detection device for the outline of an aircraft door, characterized in that: The invention comprises a main frame, an optical sensor integrated module (10) and a control cabinet host computer (11); the main frame is used to position and fix a hatch product (6) and provide a detection reference surface (4); the optical sensor integrated module (10) is installed on the main frame and is used to detect the gap and step difference between the edge of the hatch product (6) skin and the detection reference surface (4) on the main frame through an optical sensor; the control cabinet host computer (11) is bidirectionally connected to the optical sensor in the optical sensor integrated module (10) and is used to control the optical sensor integrated module (10), receive measurement data collected by the optical sensor in real time, and calculate and display the measurement value.

2. The rapid detection equipment for aircraft door profile according to claim 1, characterized in that: The main frame comprises a frame base (1), a surrounding frame (2), and a door locator (3); the frame base (1) is a triangular ground support frame; the surrounding frame (2) is designed according to the actual aircraft door frame structure, and is fixedly mounted on the frame base (1) and used to fix the door product (6); the surface of the surrounding frame corresponding to the theoretical position of the door frame digital model is the detection reference surface (4), which serves as a detection reference for the gap and step difference value of the door product (6) after pre-assembly; the door locator (3) is mounted on the surrounding frame (2) and is used for accurate positioning of the door product (6); The optical sensor integrated module (10) comprises a gap detection optical sensor (7), a step difference detection optical sensor (8), and a slide rail mechanism (9); a plurality of gap detection optical sensors (7) are provided and installed at intervals on the profile of the surrounding frame (2) to detect the gap value between the skin edge of the hatch product (6) and the detection reference surface (4); the slide rail mechanism (9) comprises a slide rail, a slider and a motor, the motor provides power for the slider to move on the slide rail, a plurality of slide rail mechanisms (9) are provided and installed at intervals on the profile of the surrounding frame (2), and a step difference detection optical sensor (8) is installed on the slider of each slide rail mechanism (9) to detect the step difference between the skin edge of the hatch product (6) and the detection reference surface (4); The control cabinet host computer (11) is provided with a control system, a display screen, a signal processing algorithm and a data storage function, and is used to control the switch of the optical sensor integrated module (10) and the slide rail mechanism (9), realize the position adjustment of the step difference detection optical sensor (8), accurately process the original signal transmitted by the optical sensor, convert it into step difference and gap values, display it in real time and save it.

3. The rapid detection equipment for aircraft door profile according to claim 2, characterized in that: Support feet (5) are installed at the four corners of the bottom of the frame base (1) for connecting to the ground for fixing and supporting.

4. The rapid detection equipment for aircraft door profile according to claim 2, characterized in that: The door positioner (3) is set according to the type of the door product (6).

5. The rapid detection equipment for aircraft door profile according to claim 2, characterized in that: The slide rails of the slide rail mechanism (9) are arranged in the tangent direction of the skin of the hatch product (6) and extend to the outside of the surrounding frame (2).

6. The rapid detection equipment for aircraft door profile according to claim 2, characterized in that: The measurement accuracy of the gap detection optical sensor (7) and the step difference detection optical sensor (8) is ±0.02 mm.

7. The rapid detection equipment for aircraft door profile according to claim 2, characterized in that: The number and spacing distance of the gap detection optical sensors (7) and the step difference detection optical sensors (8) are adjusted as required.

8. A method for using the equipment for rapid detection of aircraft door profiles according to any one of claims 1 to 7, characterized in that: The steps include: Step 1, positioning the door product (6) on the surrounding frame (2) by means of the door positioner (3), and completing the fixing of the door product (6); Step 2, start the optical sensor integrated module (10) through the control cabinet host computer (11), and adjust the step difference detection optical sensor (8) to the step difference measurement point; take the detection reference plane (4) as the reference, and start to perform comprehensive and real-time measurement of the step difference of the outer contour surface of the skin of the hatch product (6) and the gap of the skin edge; Step 3, the measurement data of the gap detection optical sensor (7) and the step difference detection optical sensor (8) are transmitted to the control cabinet host computer (11) in real time. After the control cabinet host computer (11) pre-processes the measurement data, it is converted into step difference and gap values ​​through a signal processing algorithm and displayed on a display screen in real time; based on the real-time values, it is immediately determined whether the assembly quality of the cabin door product (6) meets the requirements. If the values ​​exceed the pre-set qualified range, the cabin door is adjusted in time; at the same time, all measurement data are stored in the control cabinet host computer (11).

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