Multi-sensor intelligent feedback automatic pressing device and method

Abstract

The invention provides a multi-sensor intelligent feedback automatic pressing device and method, relates to the clamping structure technology, and particularly discloses a machining platform, the top of the machining platform is provided with a loading face, the loading face is provided with a reference positioning structure in the extending direction of the machining platform, and the two ends of the reference positioning structure are each provided with an end positioning block; side pressing mechanisms are installed on the two sides of the reference positioning structure correspondingly, a displacement frame is installed in the loading face, and an upper pressing mechanism arranged between the two side pressing mechanisms is installed on the side wall of the displacement frame. A translation structure for driving the pressing mechanism above to move transversely is arranged in the displacement frame; pressure sensors are arranged at the pressing ends of the side pressing mechanisms and the pressing ends of the upper pressing mechanisms. The pressing force monitoring mechanism is used for monitoring the pressing force applied to the thin-wall slender precise box body by the side pressing mechanism or the upper pressing mechanism; and a grating graduated scale pulse measurement sensor is arranged in the reference surface and is used for monitoring the displacement of the thin-wall slender precise box body in the assembly process in real time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamping structure, in particular to a multi-sensor intelligent feedback automatic pressing device and method. BACKGROUND

[0002] In the fields of aerospace, precision instruments, high-end equipment manufacturing, etc., thin-walled and slender precision box bodies (such as engine cases of aero-engines, shell bodies of missiles, etc.) are key basic structural parts. Such parts usually have characteristics such as complex structure, thin wall, poor rigidity, large size span, etc. During their assembly, machining or detection, reliable clamping and fixing are required. The thin-walled box body is insufficient in rigidity, and if the clamping force is too large or the force point is improper, the workpiece may be elastically or even plastically deformed. Such deformation may not be completely restored after the clamping force is removed, resulting in loss of precision of the part and becoming a waste product.

[0003] The traditional rigid fixture lacks force feedback and is controlled only by the experience of the operator, which is extremely risky. During the assembly process, especially when the tightening torque is applied or other process operations are performed, a large lateral force and vibration may be generated. If the clamping force is insufficient or unevenly distributed, the workpiece may be slightly displaced or shaken. For slender box bodies requiring multi-station and long-stroke operation, such slight displacement may accumulate into a large error, seriously affecting the final assembly effect. SUMMARY

[0004] The present application aims to provide a multi-sensor intelligent feedback automatic pressing device, which can solve the problems raised in the background art.

[0005] The technical solution of the present application is as follows: The present application provides a multi-sensor intelligent feedback automatic pressing device, comprising a machining platform, a loading surface is provided on the top of the machining platform, a reference positioning structure is provided on the loading surface along the extension direction of the machining platform, end positioning blocks are provided at both ends of the reference positioning structure; A side pressing mechanism is installed on each side of the reference positioning structure, a displacement frame is installed in the loading surface, an upper pressing mechanism is installed on the side wall of the displacement frame and placed between the two side pressing mechanisms; a translation structure for driving the upper pressing mechanism to move horizontally is provided in the displacement frame; A pressure sensor is provided on the pressing end of each of the side pressing mechanism and the upper pressing mechanism; the pressure sensor is used to monitor the clamping force applied by the side pressing mechanism or the upper pressing mechanism on the thin-walled and slender precision box body; a grating scale pulse measurement sensor is provided in the reference surface, which is used to monitor the displacement of the thin-walled and slender precision box body in real time during the assembly process.

[0006] In some technical schemes of the present application, the side pressing mechanism comprises a fixed frame mounted in the loading surface and a clamping plate, a plurality of push rod structures are equidistantly mounted on the side wall of the fixed frame along the extension direction thereof, the clamping plate is located between the two side pressing mechanisms, the plurality of push rod structures are connected with the clamping plate, and the number of pressure sensors is a plurality.

[0007] In some technical schemes of the present application, the upper pressing mechanism has the same structure as the side pressing mechanism.

[0008] In some technical schemes of the present application, the clamping plate is provided with a mounting opening, a clamping plate is slidingly arranged in the mounting opening along the pushing direction of the push rod structure, and a position adjusting structure linked with the push rod structure is arranged in the mounting opening. When the push rod structure pushes the clamping plate to contact the outer wall of the thin-walled and long precise box body, the telescopic end in the push rod structure continues to move out of the body, and the telescopic end of the push rod structure pushes the clamping plate to adjust the clamping force applied to the thin-walled and long precise box body through the position adjusting structure.

[0009] In some technical schemes of the present application, the position adjusting structure comprises a limiting ring mounted on the telescopic end of the push rod structure, a guide seat connected with the clamping plate is sleeved on the telescopic end of the push rod structure, a guide rod is arranged on the side wall opposite to the limiting ring of the guide seat, the guide rod extends outward after penetrating through the limiting ring, the telescopic end of the push rod structure is arranged in the mounting opening after penetrating through the guide seat, a return spring is sleeved on the telescopic end of the push rod structure, one end of the return spring is connected with the guide seat, and the other end of the return spring is connected with the limiting ring.

[0010] In some technical schemes of the present application, a connecting sleeve rotationally connected with the clamping plate is rotationally arranged in the mounting opening, a spiral-shaped sliding groove is formed in the outer side wall of the connecting sleeve along the axial direction thereof, a guide block is arranged on the inner wall of the mounting opening, a part of the guide block is embedded in the sliding groove, and the side, away from the clamping plate, of the connecting sleeve is rotationally connected with the telescopic end of the push rod structure.

[0011] In some technical schemes of the present application, the translation structure comprises two slide table structures mounted on the displacement frame, and a retaining frame is arranged between the two slide table structures.

[0012] In some technical schemes of the present application, the reference positioning structure comprises two reference positioning blocks arranged in pairs, a positioning groove for clamping the thin-walled and long precise box body is arranged between the two reference positioning blocks, and a positioning block driving structure for driving the relative movement of the two reference positioning blocks is arranged in the loading surface.

[0013] In some technical schemes of the present application, mounting grooves matched with the end positioning blocks are formed in the side walls of the two reference positioning blocks.

[0014] Compared with the prior art, the automatic pressing device has at least the following advantages or beneficial effects: by arranging the pressure sensor integrated with the pressing end of the side pressing mechanism and the upper pressing mechanism which directly contact the workpiece, real-time monitoring and closed-loop feedback control of the pressing force applied to the box are realized. This fundamentally avoids workpiece deformation caused by excessive clamping force or clamping looseness caused by insufficient clamping force. The grating scale pulse measurement sensor arranged in the reference surface can monitor any micro displacement of the box during assembly in real time with high precision. This solves the problem that the traditional method cannot detect workpiece creep or drift, and provides important data guarantee for assembly accuracy. The side pressing mechanism clamps from both sides, the upper pressing mechanism clamps from the top, and combined with the transversely movable displacement frame and the translation structure, a multi-dimensional pressing system that can be adjusted from the side and the top is formed. This not only provides stable constraint, but also makes it adaptable to the pressing needs of different parts of the box due to its movable characteristics, thereby enhancing the versatility and flexibility of the device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the automatic pressing device in the application.

[0016] Figure 2 It is a schematic diagram of the side view structure of the automatic pressing device in the application.

[0017] Figure 3 It is a schematic diagram of the side view structure of the side pressing mechanism and the upper pressing mechanism in the application.

[0018] Figure 4 It is a schematic diagram of the installation structure of the side pressing mechanism in the application.

[0019] Figure 5 It is a schematic diagram of the installation structure of the position adjusting structure in the application.

[0020] Figure 6 It is a schematic diagram of the installation structure of the clamping plate in the application.

[0021] Figure 7 It is Figure 3 It is a schematic diagram of the local enlarged structure of the reference positioning structure in the application.

[0022] Reference numerals: 1. Machining platform; 101. Loading surface; 2. Reference positioning structure; 201. End positioning block; 202. Reference positioning block; 203. Positioning groove; 3. Side clamping mechanism; 301. Fixing frame; 302. Clamping plate; 303. Push rod structure; 304. Mounting port; 305. Clamping plate; 4. Displacement frame; 5. Upper clamping mechanism; 6. Translation structure; 601. Slide table structure; 602. Retainer; 7. Pressure sensor; 8. Grating scale pulse measurement sensor; 9. Adjustment structure; 901. Limiting ring; 902. Guide seat; 903. Guide rod; 904. Return spring; 905. Connecting sleeve; 906. Guide block; 907. Slide groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] Example This invention provides a multi-sensor intelligent feedback automatic clamping device, such as... Figures 1-7 As shown, the processing platform 1 is composed of a box structure. The top of the processing platform 1 is provided with a loading surface 101. A reference positioning structure 2 is provided on the loading surface 101 along the extension direction of the processing platform 1. Both ends of the reference positioning structure 2 are provided with end positioning blocks 201. The reference positioning structure 2 provides a precise positioning reference and, together with the end positioning blocks 201, ensures that the initial position of the box is accurately placed in the horizontal direction.

[0026] Two sides of the benchmark positioning structure 2 are provided with side pressing mechanisms 3, and the loading surface 101 is provided with a displacement frame 4, and the side wall of the displacement frame 4 is provided with an upper pressing mechanism 5 arranged between the two side pressing mechanisms 3; the displacement frame 4 is provided with a translation structure 6 for driving the upper pressing mechanism 5 to move horizontally; the side pressing mechanisms 3 and the upper pressing mechanism 5 are fixed to the two sides and the top of the box by mechanical pressing to prevent movement during assembly; the translation structure 6 allows the upper pressing mechanism 5 to move horizontally to adapt to the pressing needs of different parts of the box and to provide a space for avoiding when the box is assembled between the two side pressing mechanisms 3, facilitating the later taking and placing of the box.

[0027] The pressing ends of the side pressing mechanisms 3 and the upper pressing mechanism 5 are each provided with a pressure sensor 7 for monitoring the pressing force of the side pressing mechanisms 3 or the upper pressing mechanism 5 on the thin-walled and slender precision box; the pressure sensor 7 converts the pressing force into an electrical signal based on the piezoelectric effect or strain principle to realize real-time monitoring and feedback control, ensuring that the pressing force is within a safe range, and the pressure sensor 7 is a conventional technology. The benchmark surface is provided with a grating scale pulse measurement sensor 8 for real-time monitoring of the displacement of the thin-walled and slender precision box during assembly. The grating scale pulse measurement sensor 8 uses the grating interference principle to measure the displacement of the box with high precision to realize closed-loop control.

[0028] When assembling the thin-walled and slender precision box, the thin-walled and slender precision box is placed on the loading surface 101 of the machining platform 1, and is preliminarily positioned by the benchmark positioning structure 2 and the end positioning blocks 201 at both ends to ensure that the box is aligned along the extension direction of the benchmark positioning structure 2. The side pressing mechanisms 3 are started to apply pressing force from both sides of the box, and the upper pressing mechanism 5 applies pressing force from above the box; the upper pressing mechanism 5 moves horizontally through the translation structure 6 in the displacement frame 4 to adjust the pressing position. The pressure sensor 7 monitors the pressing force of the side pressing mechanisms 3 and the upper pressing mechanism 5 on the box in real time and feeds back the data to the control system to adjust the pressing force, and the grating scale pulse measurement sensor monitors the displacement of the box during assembly in real time to prevent excessive movement or deformation of the box. Through intelligent feedback of multiple sensors (pressure sensor 7 and grating sensor), accurate control of the pressing force and real-time monitoring of the displacement are realized to prevent deformation or damage of the thin-walled and slender box during assembly.

[0029] Preferably, the core components of the grating scale pulse measurement sensor include a grating and a scale. The grating is composed of a series of uniformly distributed small grids, and light stripes are formed when light passes through these grids. The movement of these light stripes is detected by a photoelectric sensor, which converts the changes in light stripes into pulse signal output.

[0030] In the assembly process, the grating scale pulse measurement sensor monitors the displacement of the thin-walled and slender precision box in real time, and converts the displacement information into pulse signals. Through the calculation of the sensor, the displacement of the thin-walled and slender precision box is accurately measured. The information is fed back to the automatic pressing control computer system, so that the system can be adjusted according to the real-time displacement data, so as to ensure that the displacement precision and pressing force control of the thin-walled and slender precision box in the assembly process reach the best state.

[0031] In some technical solutions of the present application, the side pressing mechanism 3 includes a fixed frame 301 mounted in the loading surface 101 and a clamping plate 302. A plurality of push rod structures 303 are mounted on the side wall of the fixed frame 301 along the extension direction at equal intervals. The push rod structure 303 (such as a pneumatic cylinder or an electric push rod) provides linear pushing force, and the pressing force is uniformly transmitted through multiple points to reduce local stress concentration. The clamping plate 302 is located between the two side pressing mechanisms 3, and the plurality of push rod structures 303 are connected with the clamping plate 302 to ensure that the clamping plate 302 moves synchronously to clamp the thin-walled and slender precision box synchronously. The number of pressure sensors 7 is several, and the plurality of pressure sensors 7 are mounted in the clamping plate 302 at equal intervals. The pressure sensor 7 is integrated on the clamping plate 302 to directly measure the force at the contact point with the box, realizing local force monitoring and feedback. The side pressing mechanism 3 is installed in the loading surface 101 through the fixed frame 301, and the plurality of push rod structures 303 on the fixed frame 301 push the clamping plate 302 at equal intervals, so that the clamping plate 302 moves to the side wall of the box and is pressed tightly. The plurality of pressure sensors 7 in the clamping plate 302 are distributed at equal intervals to monitor the pressing force of each point in real time, ensuring that the clamping force of the clamping plate 302 on the thin-walled and slender precision box is uniformly distributed.

[0032] In some technical solutions of the present application, the upper pressing mechanism 5 has the same structure as the side pressing mechanism 3. The upper pressing mechanism 5 adopts the same structure as the side pressing mechanism 3, including a fixed frame 301, a clamping plate 302 and a push rod structure 303. This helps to reduce the manufacturing cost of the structure.

[0033] In some technical solutions of the present application, the translation structure 6 includes two slide table structures 601 mounted on the displacement frame 4, and a retaining frame 602 is arranged between the two slide table structures 601. The upper pressing structure is installed in the retaining frame 602. The upper pressing mechanism pushes the clamping plate 302 from the top to press the box through the push rod structure 303, and the pressure sensor 7 monitors the upper pressing force.

[0034] In some technical schemes of the present application, the clamping plate 302 is provided with a mounting hole 304, a clamping plate 305 is slidably arranged in the mounting hole 304 along the pushing direction of the push rod structure 303, a position adjusting structure 9 is arranged in the mounting hole 304 and connected with the push rod structure 303, and the position adjusting structure 9 serves as a transition mechanism. After the push rod structure 303 pushes the clamping plate 302 to initially press the thin-walled and long precise box, the extension end of the push rod structure 303 can further finely adjust the clamping force to correct the slight deformation of the thin-walled and long precise box caused by different clamping forces or irregular box walls. When the push rod structure 303 pushes the clamping plate 302 to contact the outer wall of the thin-walled and long precise box, the extension end of the push rod structure 303 continues to move out of the body, and the extension end of the push rod structure 303 adjusts the clamping force applied to the thin-walled and long precise box by the clamping plate 305 through the position adjusting structure 9. When the push rod structure 303 pushes the clamping plate 302 to contact the outer wall of the box, the extension end of the push rod structure 303 continues to extend, drives the clamping plate 305 to slide in the mounting hole 304 through the position adjusting structure 9, and further adjusts the clamping force. The position adjusting structure 9 converts the linear motion of the push rod into the fine motion of the clamping plate 305, realizes two-stage pressing, and corrects the slight deformation of the thin-walled and long precise box.

[0035] In some technical schemes of the present application, the position adjusting structure 9 includes a limiting ring 901 mounted on the extension end of the push rod structure 303, a guide seat 902 connected with the clamping plate 302 is sleeved on the extension end of the push rod structure 303, a guide rod 903 is arranged on the side wall opposite to the limiting ring 901 of the guide seat 902 and extends outward after penetrating through the limiting ring 901, the extension end of the push rod structure 303 is arranged in the mounting hole 304 after penetrating through the guide seat 902, a return spring 904 is sleeved on the extension end of the push rod structure 303, one end of the return spring 904 is connected with the guide seat 902, and the other end of the return spring 904 is connected with the limiting ring 901. The limiting ring 901 is mounted on the extension end of the push rod structure 303, the guide seat 902 is connected with the clamping plate 302, and the guide rod 903 penetrates through the limiting ring 901. When the extension end continues to move, the limiting ring 901 compresses the return spring 904 and guides the movement through the guide rod 903 to push the clamping plate 305 to adjust the position. The return spring 904 provides a return force, the clamping plate 305 returns to the initial position when the extension end retracts, the return spring 904 provides a buffer and an adjustable force to prevent overpressure; the guide rod 903 ensures the stability of the movement direction and avoids deflection, the spring buffer protects the box from impact and prevents damage caused by overpressure.

[0036] In some technical solutions of the present application, a connecting sleeve 905 is rotatably arranged in the mounting port 304 and rotatably connected with the clamping plate 305, a spiral sliding groove 907 is formed on the outer side wall of the connecting sleeve 905 along the axial direction, a guide block 906 is arranged on the inner wall of the mounting port 304, part of the guide block 906 is embedded in the sliding groove 907, and the side of the connecting sleeve 905 away from the clamping plate 305 is rotatably connected with the telescopic end of the push rod structure 303. The telescopic end of the push rod structure 303 is rotatably connected with the connecting sleeve 905, the connecting sleeve 905 interacts with the guide block 906 through the spiral sliding groove 907 to drive the clamping plate 305 to rotate, when the telescopic end moves linearly, the connecting sleeve 905 rotates, and the linear motion is converted into the linear motion of the clamping plate 305 through the sliding groove 907 and the guide block 906, so that the clamping plate 305 is attached to the surface of the box. The angle adjustment function of the clamping plate 305 improves the compression and attachment, adapts to the profile of the box, reduces point contact, distributes compression force, avoids stress concentration, and thus prevents the thin-walled and slender precision box from producing slight deformation that cannot be corrected.

[0037] In some technical solutions of the present application, the reference positioning structure 2 includes two reference positioning blocks 202 arranged in pairs, a positioning groove 203 for clamping the thin-walled and slender precision box is arranged between the two reference positioning blocks, and a positioning block driving structure for driving the relative motion of the two reference positioning blocks 202 is arranged in the loading surface 101. The two slide table structures 601 on the displacement frame 4 drive the lateral movement of the retaining frame 602, the upper compression mechanism 5 is installed in the retaining frame 602 to support it, moves with the retaining frame 602, provides accurate linear movement by controlling the slide table structure 601, ensures the accurate positioning of the upper compression mechanism 5, realizes the flexible positioning of the upper compression mechanism 5, adapts to the compression needs of different areas of the box, adjusts the position of the upper compression mechanism 5 above the box, and realizes the compression of different parts.

[0038] In some technical solutions of the present application, mounting grooves matching the end positioning block 201 are formed on the side walls of the two reference positioning blocks 202. The two reference positioning blocks 202 move relative to each other through the positioning block driving structure, the width of the positioning groove 203 is adjusted to clamp boxes of different widths, the box is placed in the positioning groove 203, and the positioning is realized by the end positioning block 201 and the reference positioning block 202. The positioning block driving structure drives the relative movement of the two reference positioning blocks 202 to change the size of the positioning groove 203, realizes adjustable positioning, and improves the versatility of the device.

[0039] The thin-walled and slender precision box is placed on the loading surface 101 of the machining platform 1, the reference surface is attached to the reference positioning structure 2, and the end is limited by the end positioning block 201 arranged at both ends. Compression force application and monitoring step: Start the side pressing mechanism 3 to exert lateral pressing force from both sides of the box body; Start the upper pressing mechanism 5 to exert vertical downward pressing force from the top of the box body; Real-time pressing force data applied to the box body is collected through the pressure sensor 7 arranged at the pressing end of the side pressing mechanism 3 and the upper pressing mechanism 5; Displacement monitoring step: Real-time displacement change of the box body during assembly is monitored through the grating scale pulse measurement sensor 8 arranged in the reference surface; Intelligent feedback control step: Compare the real-time pressing force data collected by the pressure sensor 7 with the preset pressing force safety threshold range; Compare the real-time displacement change monitored by the grating scale pulse measurement sensor 8 with the preset allowable displacement threshold; Based on the comparison result, generate a control instruction to dynamically adjust the output of the side pressing mechanism 3 and / or the upper pressing mechanism 5, so that the real-time pressing force is maintained within the safety threshold range, and the real-time displacement change does not exceed the allowable displacement threshold.

[0040] Move the upper pressing mechanism 5 to the designated pressing station along the length direction of the box body by driving the translation structure 6 in the displacement frame 4.

[0041] The intelligent feedback control step specifically includes: If the real-time pressing force fed back by any pressure sensor 7 is lower than the preset lower threshold, increase the output of the corresponding pressing mechanism to increase the pressing force; If the real-time pressing force fed back by any pressure sensor 7 is higher than the preset upper threshold, reduce the output of the corresponding pressing mechanism to reduce the pressing force; If the displacement change of the box body monitored by the grating scale pulse measurement sensor 8 exceeds the allowable displacement threshold, uniformly increase the pressing force of the side pressing mechanism 3, and check the pressing state of the upper pressing mechanism 5.

[0042] During the assembly process, according to the preset sequence of multiple pressing stations, the process of "driving the translation structure 6 to move the upper pressing mechanism 5 and executing the pressing force applying and monitoring steps at the station" is repeatedly executed to realize sequential pressing and assembly work on different regions of the box body.

[0043] In the initial positioning step, it also includes: Drive the two reference positioning blocks 202 in the reference positioning structure 2 to move relative to each other to adjust the width of the positioning groove 203 between them to match the reference size of the box body.

[0044] The dynamic adjustment of the output of the side pressing mechanism 3 specifically includes: The extension and retraction movement of the push rod structure 303 in the side pressing mechanism 3 is controlled, and the clamping force of the clamping plate 305 on the clamping plate 302 is adjusted by two levels through the adjusting structure 9, until the pressing force data fed back by the pressure sensor 7 in the clamping plate 302 reaches the preset requirement.

[0045] The above only is the preferred embodiment of the present application, and is not used to limit the present application, for the person skilled in the art, the present application can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A multi-sensor intelligent feedback automatic clamping device, characterized in that, The system includes a processing platform (1), the top of which is provided with a loading surface (101), and the loading surface (101) is provided with a reference positioning structure (2) along the extension direction of the processing platform (1). Both ends of the reference positioning structure (2) are provided with end positioning blocks (201). The reference positioning structure (2) is equipped with side clamping mechanisms (3) on both sides, and a displacement frame (4) is installed in the loading surface (101). An upper clamping mechanism (5) is installed on the side wall of the displacement frame (4) and placed between the two side clamping mechanisms (3). The displacement frame (4) is provided with a translation structure (6) for driving the upper clamping mechanism (5) to move laterally. Pressure sensors (7) are provided on the pressing ends of both the side pressing mechanism (3) and the upper pressing mechanism (5); used to monitor the pressing force applied by the side pressing mechanism (3) or the upper pressing mechanism (5) to the thin-walled slender precision box; a grating scale pulse measurement sensor (8) is provided in the reference plane to monitor the displacement of the thin-walled slender precision box during the assembly process in real time.

2. The multi-sensor intelligent feedback automatic pressing device according to claim 1, characterized in that, The side clamping mechanism (3) includes a fixed frame (301) installed in the loading surface (101) and a clamping plate (302). Several push rod structures (303) are equidistantly installed on the side wall of the fixed frame (301) along its extension direction. The clamping plate (302) is located between two side clamping mechanisms (3). Several push rod structures (303) are connected to the clamping plate (302). The number of pressure sensors (7) is several. Several pressure sensors (7) are equidistantly installed in the clamping plate (302).

3. The multi-sensor intelligent feedback automatic pressing device according to claim 2, characterized in that, The upper pressing mechanism (5) has the same structure as the side pressing mechanism (3).

4. A multi-sensor intelligent feedback automatic pressing device according to claim 2 or 3, characterized in that, The clamping plate (302) has an installation port (304). A clamping plate (305) is slidably provided in the installation port (304) along the pushing direction of the push rod structure (303). An adjustment structure that is linked with the push rod structure (303) is provided in the installation port (304). When the push rod structure (303) pushes the clamping plate (302) to contact the outer wall of the thin-walled slender precision box, the telescopic end (3031) in the push rod structure (303) continues to extend and drives the clamping plate (305) through the adjustment structure (9) to finely adjust the clamping force applied to the thin-walled slender precision box.

5. The multi-sensor intelligent feedback automatic pressing device according to claim 4, characterized in that, The adjustment structure includes a limiting ring (901) installed on the telescopic end of the push rod structure (303). A guide seat (902) connected to the clamping plate (302) is sleeved on the telescopic end of the push rod structure (303). A guide rod (903) is provided on the side wall of the guide seat (902) opposite to the limiting ring (901). The guide rod (903) extends outward after passing through the limiting ring (901). The telescopic end of the push rod structure (303) passes through the guide seat (902) and is placed in the mounting port (304). A return spring (904) is sleeved on the telescopic end of the push rod structure (303). One end of the return spring (904) is connected to the guide seat (902), and the other end of the return spring (904) is connected to the limiting ring (901).

6. The multi-sensor intelligent feedback automatic pressing device according to claim 5, characterized in that, The mounting port (304) is rotatably provided with a connecting sleeve (905) that is rotatably connected to the clamping plate (305). The outer side wall of the connecting sleeve (905) is provided with a spiral groove (907) along its axial direction. The inner wall of the mounting port (304) is provided with a guide block (906). A portion of the guide block (906) is embedded in the groove (907). The side of the connecting sleeve (905) away from the clamping plate (305) is rotatably connected to the telescopic end of the push rod structure (303).

7. The multi-sensor intelligent feedback automatic pressing device according to claim 1, characterized in that, The translation structure (6) includes two slide structures (601) mounted on the displacement frame (4), a retainer (602) is provided between the two slide structures (601), and the upper pressing structure is installed in the retainer (602).

8. The multi-sensor intelligent feedback automatic pressing device according to claim 1, characterized in that, The reference positioning structure (2) includes two reference positioning blocks (202) arranged in pairs. A positioning groove (203) for clamping a thin-walled, slender, precision box is provided between the two reference positioning blocks. A positioning block driving structure for driving the relative movement of the two reference positioning blocks (202) is provided in the loading surface (101).

9. The multi-sensor intelligent feedback automatic clamping device according to claim 8, characterized in that, The two reference positioning blocks (202) have mounting grooves on their side walls that match the end positioning blocks (201).

10. A clamping method for a multi-sensor intelligent feedback automatic clamping device according to any one of claims 1-9, characterized in that, Includes the following steps: The thin-walled, slender precision box is placed on the loading surface (101) of the processing platform (1), so that its reference surface is in contact with the reference positioning structure (2), and the end is limited by the end positioning blocks (201) set at both ends; Activate the side clamping mechanism (3) to apply lateral clamping force from both sides of the box; Activate the upper clamping mechanism (5) to apply a vertical downward clamping force from above the box; The pressure sensor (7) installed at the pressing end of the side pressing mechanism (3) and the top pressing mechanism (5) collects the pressing force data applied to the box in real time; The displacement change of the box during the assembly process is monitored in real time by using a grating scale pulse measurement sensor (8) set in the reference plane. The real-time clamping force data collected by the pressure sensor (7) is compared with the preset clamping force safety threshold range; The real-time displacement change monitored by the grating scale pulse measurement sensor (8) is compared with the preset allowable displacement threshold. Based on the comparison result, a control command is generated to dynamically adjust the output of the side clamping mechanism (3) and / or the top clamping mechanism (5) so that the real-time clamping force is maintained within the safe threshold range and the real-time displacement change does not exceed the allowable displacement threshold.

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