Portable device for repairing local pits on reflecting surface of large radio telescope and repairing method

Abstract

The invention relates to a portable device and method for repairing local pits of a reflecting surface of a large radio telescope, the device comprises a correction plate assembly, a correction pin assembly, an auxiliary driving assembly, a supporting assembly and a main driving assembly, the correction plate assembly and a corrected panel of the reflecting surface of the large radio telescope are connected and positioned; the correcting pin assembly is arranged between the correcting plate assembly and the auxiliary driving assembly and matched with the correcting plate assembly to complete repairing of local pits of the reflecting surface panel of the large radio telescope. The auxiliary driving assembly is arranged on the lower portion of the supporting assembly and used for adjusting the position of the correcting pin assembly. The main driving assembly is arranged on the upper portion of the supporting assembly and used for driving the correcting pin assembly to move. According to the device, reverse drawing correction is carried out on the reflecting surface panel of the large radio telescope subjected to local plastic deformation, so that the original surface type of the reflecting surface panel is recovered.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical manufacturing, and particularly relates to a portable device and method for repairing local pits on the reflector surface of a large radio telescope. Background Art

[0002] The reflector surface of the 500-meter Aperture Spherical Radio Telescope (FAST) is one of the most important components of the telescope. Its function is to reflect radio signals to the focus so that the receiver can receive and record the signals. The quality of the reflector surface shape directly affects the reflection efficiency of radio signals and thus affects the performance of the telescope. The FAST reflector surface consists of multiple reflector units, and each reflector unit is assembled by multiple sub-unit panels. To reduce the self-weight of the reflector units, the FAST panel material is selected as perforated aluminum plate, so its stiffness and strength are relatively small, especially the ability to withstand impact loads perpendicular to the panel direction is weak. However, during the use of the telescope, hail has had an obvious impact on the panel of the reflector unit. Specifically, each sub-unit panel is hit, forming several pits, and some sub-unit panels even have more pits, and the depth of the pits has also reached a serious level. And such pits with plastic deformation caused by hail hitting the reflector panel will lead to a certain degree of reduction in its reflection efficiency, which has a certain impact on the performance of the telescope. Therefore, the problem of local pits commonly existing on the reflector surface of large radio telescopes urgently needs to be solved. Summary of the Invention

[0003] In view of the above problems, the present invention provides a portable device and method for repairing local pits on the reflector surface of a large radio telescope, which are used to solve the problem of local pits commonly existing on the reflector surface of the FAST telescope.

[0004] A portable device for repairing local pits on the reflector surface of a large radio telescope, the device includes: a correction plate assembly, a correction pin assembly, a secondary drive assembly, a support assembly, and a main drive assembly, wherein,

[0005] The correction plate assembly is connected and positioned with the panel to be corrected on the reflector surface of the large radio telescope; the correction pin assembly is arranged between the correction plate assembly and the secondary drive assembly and is used to repair the local pits on the reflector surface of the large radio telescope;

[0006] The secondary drive assembly is arranged at the lower part of the support assembly and is used to adjust the position of the correction pin assembly;

[0007] The main drive assembly is arranged at the upper part of the support assembly and is used to drive the correction pin assembly to move.

[0008] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The correction plate assembly includes a correction plate with a concave arc surface and positioning pins. A plurality of through holes are provided on the correction plate, and the aperture sizes and distributions thereof are consistent with the hole sizes and distribution rules of the panel to be corrected. A plurality of the positioning pins are provided on the periphery of the correction plate.

[0009] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The correction pin assembly includes correction pins and a slide plate. A plurality of through holes corresponding to the number of the correction pins are provided on the slide plate, and the arrangement rule of the through holes is the same as that of the through holes on the correction plate.

[0010] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The correction pin assembly further includes a spring. The correction pin is a special-shaped cylindrical pin, including a guiding section, a pulling section, and an anti-pulling section. The guiding section is conical. The pulling section is a special shape obtained by cutting a part of the cylinder of the cylindrical pin according to a certain aperture size. The anti-pulling section is a milled flat stepped shaft, and the direction of the milled flat of the anti-pulling section is perpendicular to the cutting direction of the pulling section. The spring is arranged on the pulling section between the anti-pulling section and the slide plate.

[0011] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The auxiliary driving assembly includes a positioning plate, a cover plate, and an auxiliary driving cylinder. The cover plate is arranged on the upper part of the positioning plate, and the cover plate and the positioning plate form a space. The auxiliary driving cylinder is installed on the side of the positioning plate, and its piston is connected to the slide plate.

[0012] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The support assembly includes a support plate and support columns. The main driving assembly is arranged on the upper part of the support plate, and a plurality of the support columns are simultaneously connected to the support plate and the correction plate.

[0013] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The main driving assembly is a main driving cylinder, which is arranged on the support plate, and its piston is connected to the top of the cover plate.

[0014] For the aspects and any possible implementation manners described above, a further implementation manner is provided. There are a plurality of the positioning pins, and the through holes on the slide plate form a clearance fit with the pulling section.

[0015] For the aspects and any possible implementation manners described above, a further implementation manner is provided. A rectangular through hole is provided on the positioning plate, the sliding plate is arranged in the rectangular through hole, a long strip-shaped groove is provided on the cover plate, the size of the groove is greater than or equal to the milled flat size of the anti-pulling section, and the anti-pulling section is embedded in the corresponding long strip-shaped groove.

[0016] The present invention also provides a repair method for a device for repairing local pits on the reflector surface of a large radio telescope. The method is implemented by using the device, and specifically includes:

[0017] S1. The positioning pins of the correction plate assembly are cooperatively positioned with the holes on the panel to be corrected on the reflector surface of the large radio telescope.

[0018] S2. The piston of the main driving cylinder of the main driving assembly extends, pushing the cover plate and the positioning plate of the auxiliary driving assembly to move vertically downward along the support columns of the support assembly, and further pushing the correction pins of the correction pin assembly to pass through the correction plate of the correction plate assembly and enter the holes of the panel to be corrected. After the correction pins pass through the panel to be corrected by a certain depth, stop.

[0019] S3. The piston of the auxiliary driving cylinder of the auxiliary driving assembly contracts, pulling the sliding plate of the correction pin assembly to move horizontally in the positive direction along the long strip-shaped groove of the cover plate, thereby driving the correction pins to move in the horizontal positive direction. When the arc surface cut on the pulling section of the correction pin approaches the edge of the hole of the panel to be corrected, stop.

[0020] S4. The piston of the main driving cylinder retracts, pulling the cover plate and the positioning plate to move vertically upward along the support columns, and further pulling the correction pins to move upward, causing the concave pit area of the panel to be corrected to deform upward until the correction pins closely fit the arc-shaped concave surfaces of the panel to be corrected and the correction plate, and maintain for a certain period of time.

[0021] S5. The piston of the main driving cylinder extends, pushing the cover plate and the positioning plate to move vertically downward along the support columns. When the correction pins reach a certain position, stop.

[0022] S6. The piston of the auxiliary driving cylinder extends, pushing the sliding plate to move horizontally in the negative direction along the long strip-shaped groove of the cover plate, thereby driving the correction pins to move in the horizontal negative direction. Stop when returning to the initial horizontal position.

[0023] S7. The piston of the main driving cylinder retracts, pulling the cover plate and the positioning plate to move vertically upward along the support columns, and further pulling the correction pins to move upward. Stop when the correction pins return to the initial vertical position.

[0024] Advantages of the present invention

[0025] A device for portable repair of local pits on the reflector surface of a large radio telescope provided by the present invention, the device comprising: a correction plate assembly, a correction pin assembly, a secondary drive assembly, a support assembly, and a primary drive assembly, wherein the correction plate assembly is connected and positioned with the panel to be corrected on the reflector surface of the large radio telescope; the correction pin assembly is arranged between the correction plate assembly and the secondary drive assembly and is used for repairing local pits on the reflector surface of the large radio telescope; the secondary drive assembly is arranged at the lower part of the support assembly and is used for adjusting the position of the correction pin assembly; the primary drive assembly is arranged at the upper part of the support assembly and is used for driving the correction pin assembly to move. The device of the present invention uses a cylinder as the drive, and the cylinder power uses a portable centralized gas source, which improves the reliability of the system. The device of the present invention restores the original surface shape by reversely drawing and correcting the aluminum plate of the reflector surface of the large radio telescope with local plastic deformation. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the device of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the cover plate of the present invention;

[0028] Figure 3 It is a schematic structural diagram of the correction pin of the present invention. Detailed Embodiments

[0029] In order to better understand the technical solution of the present invention, the content of the present invention includes but is not limited to the following detailed embodiments, and similar technologies and methods should be regarded as within the scope of protection of the present invention. To make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the drawings and specific embodiments.

[0030] It should be clear that the embodiments described in the present invention are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present invention.

[0031] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0032] The device for portable repair of local pits on the reflector surface of a large radio telescope provided by the present invention, the device comprising: a correction plate assembly, a correction pin assembly, a secondary drive assembly, a support assembly, and a primary drive assembly, wherein,

[0033] The correction plate assembly is connected and positioned with the corrected panel of the large radio telescope reflector surface;

[0034] The correction pin assembly is arranged between the correction plate assembly and the sub-drive assembly, and is used to repair local pits on the large radio telescope reflector surface;

[0035] The sub-drive assembly is arranged at the lower part of the support assembly and is used to adjust the position of the correction pin assembly;

[0036] The main drive assembly is arranged at the upper part of the support assembly and is used to drive the correction pin assembly to move.

[0037] Further, the correction plate assembly includes a correction plate with a concave arc surface and positioning pins. Several through holes are arranged on the correction plate, and the aperture size and distribution thereof are consistent with the hole size and distribution law of the corrected panel; several of the positioning pins are arranged on the periphery of the correction plate.

[0038] Further, the correction pin assembly includes a correction pin and a slide plate. Several through holes corresponding to the number of correction pins are arranged on the slide plate, and the arrangement law of the through holes is the same as the arrangement law of the through holes on the correction plate.

[0039] Further, the correction pin assembly further includes a spring. The correction pin is a special-shaped cylindrical pin, including a guiding section, a pulling section and an anti-pulling section. The guiding section is conical, the pulling section is a special shape obtained by cutting a part of the cylinder of the cylindrical pin according to a certain aperture size, and the anti-pulling section is a milled flat stepped shaft, and the direction of the milled flat of the anti-pulling section is perpendicular to the cutting direction of the pulling section; the spring is arranged on the pulling section between the anti-pulling section and the slide plate.

[0040] Further, the sub-drive assembly includes a positioning plate, a cover plate and a sub-drive cylinder; the cover plate is arranged on the upper part of the positioning plate, and the cover plate and the positioning plate form a space; the sub-drive cylinder is installed on the side of the positioning plate, and its piston is connected with the slide plate.

[0041] Further, the support assembly includes a support plate and support columns. The main drive assembly is arranged on the upper part of the support plate, and several of the support columns connect the support plate and the correction plate at the same time.

[0042] Further, the main drive assembly is a main drive cylinder, which is arranged on the support plate, and its piston is connected with the top of the cover plate.

[0043] Further, there are several positioning pins, and the through holes on the slide plate form a clearance fit with the pulling section.

[0044] Furthermore, a rectangular through-hole is provided on the positioning plate, the sliding plate is arranged in the rectangular through-hole, a long strip-shaped groove is provided on the cover plate, the size of the groove is greater than or equal to the milled flat size of the anti-pulling section, and the anti-pulling section is embedded in the corresponding long strip-shaped groove.

[0045] Specifically, as Figures 1-3 shown, the present invention provides a device for portably repairing local pits on the reflecting surface of a large radio telescope. The device includes: a positioning pin 1, a correction plate 2, a sliding plate 3, a support column 4, a main driving cylinder 5, a support plate 6, a cover plate 7, a spring 8, a sub-driving cylinder 9, a positioning plate 10, and a correction pin 11.

[0046] The positioning pin 1 is fixedly installed on the correction plate 2, and the two form a correction plate assembly. The correction plate 2 is a plate with a certain concave arc surface on one side. When the panel of the reflecting surface of the large radio telescope is used as the panel to be corrected and closely adheres to the concave arc surface of the correction plate, the concave arc surface can offset the elastic deformation of the panel to be corrected, reaching the critical point of plastic deformation; the positioning pin 1 is a group of tapered pins with a certain guiding function, which are arranged around the concave arc surface of the correction plate 2. Several through-holes are provided on the correction plate 2, and the panel to be corrected has regularly arranged holes. The size and distribution of the through-holes on the correction plate 2 are consistent with the size and distribution law of the holes on the panel to be corrected; the present invention uses the regularly arranged holes on the panel to be corrected to fix the relative positions of the correction plate 2 and the panel to be corrected.

[0047] The correction pin assembly includes a correction pin 11, a spring 8, and a sliding plate 3. The correction pin 11 is a group of special-shaped cylindrical pins with a diameter of 4.5 mm. As Figure 3 shown, the cylindrical pin includes a guiding section 111, a pulling section 112, and an anti-pulling section 113. The guiding section 111 is conical, the pulling section 112 is a special-shaped structure obtained by cutting a part of the cylinder of the cylindrical pin according to the panel hole diameter, the normal direction of the cut part of the cylinder is the opening direction of the special-shaped structure, and the anti-pulling section 113 is a milled flat stepped shaft, and the milling direction of the anti-pulling section 113 is perpendicular to the cutting direction of the pulling section 112; the sliding plate 3 is a special-shaped plate with a number of holes with a diameter of 4 - 6 mm. The present invention preferably has a diameter of 4.6 mm, and the arrangement of the holes is consistent with the distribution rule of the 4 - 6 mm through-holes on the correction plate 2. The present invention preferably has a diameter of 5 mm for the through-holes on the correction plate 2; the spring 8 is installed on the pulling section 112 between the anti-pulling section 113 of the correction pin 11 and the sliding plate 3. The displacement and force on the sliding plate 3 are transmitted to the correction pin 11 through the spring 8. The function of the spring 8 in this position is to absorb the different displacements generated by the arc surface of the correction plate 2 during the operation of the correction pin 11 through the spring 8.

[0048] Further, the sub-driving assembly includes a positioning plate 10 and a sub-driving cylinder 9. The positioning plate 10 is a special-shaped member, in which a rectangular through-hole or space is provided, and a sliding plate 3 is embedded in the rectangular through-hole or space. Therefore, the sliding plate 3 can slide in the horizontal direction of the space. The sub-driving cylinder 9 is installed on the side surface of the positioning plate 10, and the piston of the sub-driving cylinder 9 is connected to the sliding plate 3 of the correction pin assembly, and is used to drive the correction pin assembly to move in the horizontal direction.

[0049] The main driving assembly is a main driving cylinder 5, and the supporting assembly includes a supporting plate 6 and supporting columns 4. The supporting plate 6 is a special-shaped plate, which is used to install the main driving cylinder 5 of the main driving assembly and play a role in supporting the frame. The supporting columns 4 are a group of cylindrical members, at least four, and are connected to the supporting plate 6 and the correction plate 2 at the same time to form a square frame structure. The cover plate 7 is a special-shaped member, which is installed in cooperation with the positioning plate 10, and strip-shaped grooves 12 corresponding to the distribution of the correction pins 11 are distributed inside it. The size of the grooves is greater than or equal to the size of the milled flat section of the anti-pulling section 113 of the correction pin. Therefore, the grooves and the milled flat section of the anti-pulling section 113 of the correction pin form a clearance fit, which can realize the direction fixing and overall horizontal sliding of the pulling section 112. The main driving cylinder 5 is installed on the supporting plate 6, and the piston of the main driving cylinder 5 is linked to the cover plate 7 and is used to drive the correction pin assembly to move in the up and down direction. The sliding plate 3 and several groups of correction pins 11 are arranged in the space between the cover plate 7 and the positioning plate 10. The spring 8 is installed between the sliding plate 3 and the correction pins 11, and is specifically arranged on the pulling section 112 between the anti-pulling section 113 of the correction pin 11 passing through the through-hole of the sliding plate 3 and the sliding plate 3, and is provided on each correction pin 11. There is a certain compression amount of the spring 8 in the initial installation state, which can ensure that the anti-pulling section 113 of the head of the correction pin 11 is pushed into the groove 12 of the cover plate 7 to prevent the axial rotation of the correction pin 11. In addition, it also ensures that the reaction force of the spring 8 is greater than the panel correction force.

[0050] Therefore, in the present invention, the supporting columns 4 are used to firmly connect the correction plate 2 and the supporting plate 6 to form a frame structure. The positioning plate 10 is installed between the correction plate 2 and the supporting plate 6 and can slide up and down along the supporting columns 4, that is, slide along the track formed by the supporting columns 4. The cover plate 7 is firmly installed with the positioning plate 10, and a certain space is formed inside. The correction pins 11 are installed on the sliding plate 3, and the correction pins 11 can axially slide along the holes on the sliding plate 3. The main driving cylinder 5 is firmly installed on the supporting plate 6, and its piston is firmly connected to the cover plate 7. The sub-driving cylinder 9 is firmly installed with the positioning plate 10, and its piston is firmly connected to the sliding plate 3.

[0051] All the special shapes mentioned in the present invention are irregular shapes and are designed according to the structure of the device of the present invention.

[0052] As an embodiment disclosed in the present invention, the present invention also provides a modification method for a device for repairing local pits on the reflector surface of a portable large radio telescope, that is, the device of the present invention can achieve the function of repairing local pits on the panel. The implementation steps are as follows:

[0053] In the first step, the positioning pins 1 around the correction plate 2 fix the panel, and the through holes on the correction plate 2 are used for positioning in cooperation with the holes on the panel. The panel is the reflector surface panel of the large radio telescope and serves as the panel to be corrected.

[0054] In the second step, the piston of the main driving cylinder 5 extends. The extended piston pushes the cover plate 7 and the positioning plate 10 to move vertically downward along the support column 4, and then pushes the correction pin 11 through the correction plate 2 into the hole of the panel. When the correction pin 11 penetrates the panel to a certain depth, such as 8 - 10 mm, stop to make the guiding section of the correction pin 11 completely exceed the lowest end of the panel.

[0055] In the third step, the piston of the auxiliary driving cylinder 9 contracts, pulling the sliding plate 3 to move horizontally in the positive direction along the groove of the cover plate 7, that is, the direction in which the pulling section of the correction pin is cut after installation, so as to drive the correction pin 11 to move towards its special-shaped opening direction. When the arc surface of the pulling section of the correction pin 11 close to the edge of the hole of the panel to be corrected, stop.

[0056] In the fourth step, the piston of the main driving cylinder 5 retracts, pulling the cover plate 7 and the positioning plate 10 to move vertically upward along the support column 4, and then pulling the correction pin 11 to move upward. At this time, due to the pulling effect of the pulling section 112 of the correction pin 11 on the panel, the panel in the pit area is caused to deform upward until the correction pin 11 closely fits the arc-shaped concave surface of the panel and the correction plate 2, and maintains for a certain period of time, such as 2 - 3 minutes, to ensure stable and effective panel repair.

[0057] In the fifth step, the piston of the main driving cylinder 5 extends, pushing the cover plate 7 and the positioning plate 10 to move vertically downward along the support column. When the correction pin 11 reaches a certain position, such as 3 - 5 mm, stop after making the guiding section of the correction pin 11 completely exceed the lowest end of the panel.

[0058] In the sixth step, the piston of the auxiliary driving cylinder 9 extends, pushing the sliding plate 3 to move horizontally in the negative direction along the groove of the cover plate 7, so as to drive the correction pin 11 to move horizontally in the negative direction towards the opposite direction of its special-shaped opening direction, and stop when the correction pin returns to the initial horizontal position, that is, when it returns to the initial horizontal position.

[0059] In the seventh step, the piston of the main driving cylinder 5 retracts, pulling the cover plate 7 and the positioning plate 10 to move vertically upward along the support column, and then pulling the correction pin 11 to move upward. Stop when the correction pin 11 returns to the initial vertical position or completely leaves the correction plate 2.

[0060] The foregoing description has shown and described several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the above teachings or the skills or knowledge in the relevant field. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A portable device for repairing local pits on the reflecting surface of a large radio telescope, characterized in that: The device comprises: a correction plate assembly, a correction pin assembly, a secondary drive assembly, a support assembly and a main drive assembly, wherein: The correction plate assembly and the large radio telescope reflecting surface are connected and positioned by the correction panel; the correction pin assembly is arranged between the correction plate assembly and the auxiliary driving assembly, and is used to repair the local pits on the reflecting surface of the large radio telescope; The auxiliary driving assembly is arranged at the lower part of the supporting assembly and is used to adjust the position of the correction pin assembly; The main driving assembly is arranged on the upper part of the supporting assembly and is used to drive the correction pin assembly to move.

2. The device according to claim 1, characterized in that The correction plate assembly includes a correction plate with a concave arc surface and positioning pins. A plurality of through holes are arranged on the correction plate, and the hole size and distribution thereof are consistent with the hole size and distribution pattern of the corrected panel; a plurality of positioning pins are arranged around the correction plate.

3. The device according to claim 2, characterized in that The correction pin assembly includes a correction pin and a slide plate, and the slide plate is provided with a number of through holes corresponding to the number of the correction pins, and the arrangement pattern of the through holes is the same as the arrangement pattern of the through holes on the correction plate.

4. The device according to claim 3, characterized in that The correction pin assembly also includes a spring. The correction pin is a special-shaped cylindrical pin, including a guide section, a drawing section and an anti-pull-out section. The guide section is conical, and the drawing section is a special-shaped section obtained by cutting part of the cylinder of the cylindrical pin according to a certain size of aperture. The anti-pull-out section is a milled stepped shaft, and the milling direction of the anti-pull-out section is perpendicular to the cutting direction of the drawing section. The spring is arranged on the drawing section between the anti-pull-out section and the slide plate.

5. The device according to claim 4, characterized in that The auxiliary drive assembly includes a positioning plate, a cover plate and an auxiliary drive cylinder; the cover plate is arranged on the upper part of the positioning plate, and the cover plate and the positioning plate form a space; the auxiliary drive cylinder is installed on the side of the positioning plate, and its piston is connected to the slide plate.

6. The device according to claim 5, characterized in that The support assembly includes a support plate and support columns. The main driving assembly is arranged on the upper portion of the support plate, and a plurality of support columns are connected to the support plate and the correction plate at the same time.

7. The device according to claim 6, characterized in that The main driving assembly is a main driving cylinder, which is arranged on the support plate, and a piston of the main driving cylinder is connected to the top of the cover plate.

8. The device according to claim 4, characterized in that There are a plurality of positioning pins, and the through holes on the slide plate form a clearance fit with the drawing section.

9. The device according to claim 5, characterized in that The positioning plate is provided with a rectangular through hole, the slide plate is arranged in the rectangular through hole, the cover plate is provided with a long strip groove, the size of the groove is greater than or equal to the milling flattening size of the anti-pull-out section, and the anti-pull-out section is embedded in the corresponding long strip groove.

10. A method for repairing a portable device for repairing local pits on the reflecting surface of a large radio telescope, characterized in that: The method is implemented by using the device according to any one of claims 1 to 9, and specifically comprises: S1. Coordinate and position the positioning pins of the correction plate assembly with the holes on the corrected front panel of the large radio telescope reflecting surface; S2. The piston of the main driving cylinder of the main driving assembly extends, pushing the cover plate and the positioning plate of the auxiliary driving assembly to move vertically downward along the support column of the supporting assembly, thereby pushing the correction pin of the correction pin assembly to pass through the correction plate of the correction plate assembly and enter the hole of the corrected panel, and stops after the correction pin passes through the corrected panel to a certain depth; S3. The piston of the auxiliary drive cylinder of the auxiliary drive assembly contracts, pulling the slide plate of the correction pin assembly to move in the horizontal positive direction along the long strip groove of the cover plate, thereby driving the correction pin to move in the horizontal positive direction, and stop when the arc surface cut by the drawing section of the correction pin approaches the edge of the hole of the corrected panel; S4. The piston of the main driving cylinder retracts, pulling the cover plate and the positioning plate to move vertically upward along the support column, and then pulling the correction pin upward, so that the pit area of ​​the corrected panel is deformed upward, until the correction pin makes the corrected panel and the arc-shaped concave surface of the correction plate fit tightly, and maintains this for a certain period of time; S5. The piston of the main driving cylinder extends, pushing the cover plate and the positioning plate to move vertically downward along the support column, and stops when the correction pin reaches a certain position; S6. The piston of the auxiliary driving cylinder extends, pushing the slide plate to move in the horizontal negative direction along the long strip groove of the cover plate, thereby driving the correction pin to move in the horizontal negative direction and stop when it returns to the initial horizontal position; S7. The piston of the main driving cylinder retracts, pulling the cover plate and the positioning plate to move vertically upward along the support column, thereby pulling the correction pin to move upward, and stops when the correction pin returns to the initial vertical position.

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