A fairing docking structure punching device and a punching method

Abstract

The application provides a fairing butt joint structure punching device, which comprises a fairing mounting hole base plate and an inter-stage mounting hole base plate; a plurality of operation holes are arranged on the fairing mounting hole base plate; the inter-stage mounting hole base plate is in a whole circular ring structure, and the two side surfaces of the inter-stage mounting hole base plate are provided with inter-stage positioning profiles; the two side surfaces of the fairing mounting hole base plate are provided with fairing butt joint profiles; a clamping unit is arranged on the inner side of the inter-stage mounting hole base plate and the inner side of each operation hole, and a limiting unit is arranged on the outer edge of the fairing mounting hole base plate and the outer edge of the inter-stage mounting hole base plate and corresponds to the clamping unit. In the application, the limiting unit can effectively maintain the shape of the fairing product, thereby effectively avoiding the deformation of the fairing and affecting the punching precision, laying a foundation for high-precision punching operation, and the punching operation is simple, the positioning precision of the punching device and the fairing product is high, the fixing is stable and reliable, the precision of the processed hole position is guaranteed, and the complicated and cumbersome adjustment alignment operation during the fairing assembly operation is effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of fairing processing and assembly technology, and in particular relates to a fairing docking structure drilling device and drilling method. Background Technology

[0002] Satellite fairings protect satellites and other payloads from harmful environmental factors such as aerodynamic forces, aerodynamic heating, and acoustic vibrations. They are a crucial component of launch vehicles. Due to their large size, fairings are typically divided into multiple segments. Connecting holes are provided on the docking structure between each pair of segments for interstage connection. Each segment usually consists of two half-fairings, with connecting holes on the mating surfaces. The two half-fairings are connected by expansion bolts, allowing for separation after satellite launch. Because large-size fairings are easily deformable, and the dimensions of the connecting holes on the mating surfaces of the half-fairings are critical during assembly, any dimensional deviations during drilling directly affect the assembly process. Existing drilling fixtures are insufficient for the drilling requirements of large-size fairings, necessitating targeted improvements to the drilling fixtures based on the fairing's design characteristics. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a drilling device and drilling method for fairing docking structure.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A drilling device for fairing docking structure includes a fairing mounting hole base plate and an interstage mounting hole base plate; the fairing mounting hole base plate is provided with a plurality of operating holes, and both the fairing mounting hole base plate and the interstage mounting hole base plate are provided with a plurality of drill sleeves; the interstage mounting hole base plate is generally in the shape of a ring, and both its two sides are provided with interstage positioning surfaces, and both its two sides are provided with fairing docking surfaces.

[0006] Clamping units are installed on the inner side of the inter-stage mounting hole substrate and the inner side of each operating hole. Limiting units are provided on the outer edge of the cover mounting hole substrate and the outer edge of the inter-stage mounting hole substrate, respectively. The clamping unit includes a pressure block, on which mounting hole substrate connectors and docking frame clamping members are provided.

[0007] The limiting unit includes a lateral limiting structure, and both the cover mounting hole base plate and the interstage mounting hole base plate are provided with a lateral limiting adjustment mechanism for adjusting the lateral limiting structure, so as to realize the restorative adjustment of the lateral deformation of the fairing product.

[0008] An extension plate is detachably mounted on the mounting hole base plate of the fairing, and a longitudinal limiting structure for the fairing is provided at the end of the extension plate. The longitudinal limiting structure for the fairing includes a longitudinal limiting block. A longitudinal limiting adjustment mechanism for adjusting the position of the longitudinal limiting block is provided at the end of the extension plate to realize the restorative adjustment of the longitudinal deformation of the fairing product.

[0009] Furthermore, the pressure block is L-shaped and includes a pressure plate and a support. The inner side of the pressure plate presses against the mounting plate of the cover, and the inner side of the support presses against the inner wall of the operating hole.

[0010] Furthermore, two sets of clamping units are installed inside each operating hole.

[0011] Furthermore, the lateral limiting structure on the mounting hole substrate includes limiting blocks for mounting holes that can be detachably installed on both sides of the mounting hole substrate.

[0012] Furthermore, the lateral limiting structure on the interstage mounting hole substrate includes interstage mounting hole limiting blocks that can be detachably installed on both sides of the interstage mounting hole substrate.

[0013] Furthermore, the extension plate is fixed to the mounting hole base plate of the cover via the extension plate connector, and the working surface of the extension plate is located on the side of the mounting hole base plate of the cover where the drill sleeve is not installed.

[0014] Furthermore, the extension plate connector includes bolts or locating pins.

[0015] Furthermore, the extension plate includes a positioning part and a docking part, the docking part is higher than the positioning part, and a positioning step is formed at the junction of the docking part and the positioning part, and the end face of the end of the mounting hole substrate abuts against the positioning step.

[0016] A drilling method using the aforementioned fairing docking structure drilling device.

[0017] Includes the following steps:

[0018] The mating surface of the fairing mounting hole base plate on one side is attached to the surface of the fairing half cover mating frame. A drill sleeve is installed on the mating surface of the fairing mounting hole base plate on the other side. Clamping units are installed in each operating hole. The mounting hole base plate connector is used to fix the clamping block of the clamping unit. The lateral shape of the fairing half cover is adjusted by adjusting the mating frame clamping part and the lateral limit adjustment mechanism. The longitudinal shape of the fairing half cover is adjusted by adjusting the longitudinal limit adjustment mechanism.

[0019] When the above-mentioned fairing half-cover shape is adjusted to the closed-cover assembly state, drilling operations are performed on each mounting hole using a drill bushing. After the fairing half-cover is drilled, each clamping unit and each extension plate on the above-mentioned closed-cover mounting hole base plate are removed, and each removed clamping unit is installed on one side of the closed-cover docking surface that was originally attached to the surface of the fairing half-cover docking frame. The other side of the closed-cover docking surface is used to attach to the surface of another fairing half-cover docking frame. Then, drilling operations are performed on each mounting hole of the current fairing half-cover using a drill bushing. After the drilling operation is completed, the drilling device is disassembled to perform the closed-cover assembly operation.

[0020] The interstage positioning surface on one side of the interstage mounting hole substrate is fitted with the end face of the fairing segment. A drill sleeve is installed on the interstage mounting hole substrate, and a clamping unit is installed in the operating hole of the interstage mounting hole substrate. The interstage mounting hole substrate and the clamping unit are fixed by the mounting hole substrate connector. The lateral shape of the fairing half is adjusted by adjusting the docking frame clamping part and the lateral limit adjustment mechanism respectively.

[0021] When the fairing half-cover shape is adjusted to the interstage docking assembly state, drilling operations are performed on each mounting hole using a drill bushing. After the current fairing segment is drilled, each clamping unit is removed and installed on the fairing docking profile on one side of the original surface of the fairing segment interstage docking frame. The other side of the interstage positioning profile is used to fit against the surface of the interstage docking frame of another fairing segment. Then, drilling operations are performed on each mounting hole of the current fairing segment using a drill bushing. After the drilling operation is completed, the drilling device is disassembled to perform interstage assembly operations.

[0022] Compared with existing technologies, the present invention has the following advantages:

[0023] In this invention, the limiting unit can effectively maintain the shape of the fairing product, thereby effectively avoiding fairing deformation that affects drilling accuracy, laying the foundation for high-precision drilling operations. The drilling operation is simple, the drilling device and the fairing product have high positioning accuracy, and the fixing is stable and reliable. The accuracy of the processed holes is guaranteed, effectively avoiding the complicated adjustment and alignment operations during fairing assembly, thus improving the efficiency of fairing assembly in the later stage and ensuring more reliable assembly accuracy. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 A schematic diagram of the mounting hole substrate portion of the cover in this invention;

[0026] Figure 2This is a schematic diagram of the extension plate portion in the present invention;

[0027] Figure 3 for Figure 1 A schematic diagram of the clamping unit section;

[0028] Figure 4 A schematic diagram illustrating the drilling process for the fairing half-cover docking frame of this invention;

[0029] Figure 5 for Figure 4 A schematic diagram of the mounting section of the clamping unit;

[0030] Figure 6 A schematic diagram illustrating the drilling process for creating the fairing segment docking frame for this invention;

[0031] Figure 7 for Figure 6 Top view;

[0032] Figure 8 A three-dimensional structural diagram illustrating the drilling process of the fairing segment docking frame for this invention;

[0033] Figure 9 for Figure 8 A schematic diagram of the clamping unit section;

[0034] Figure 10 A schematic diagram illustrating the application of the lateral limit adjustment mechanism in this invention;

[0035] Figure 11 This is a schematic diagram showing the disassembled state of the lateral limit adjustment mechanism in this invention. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] A drilling device for fairing docking structure, such as Figures 1 to 11 As shown, the system includes a fairing mounting hole base plate 1 and an interstage mounting hole base plate 2. Several operating holes 3 are provided on the fairing mounting hole base plate (corresponding to the fairing docking frame), and several drill sleeves 4 are provided on both the fairing mounting hole base plate and the interstage mounting hole base plate (corresponding to the required drilling positions on the fairing). The interstage mounting hole base plate has an overall annular structure, with interstage positioning surfaces on both sides. These interstage positioning surfaces are working surfaces used to fit against the fairing interstage docking frame. The fairing mounting hole base plate also has fairing docking surfaces on both sides. These docking surfaces are working surfaces used to fit against the fairing half-cover docking frame.

[0041] Clamping units are installed on the inner side of the inter-stage mounting hole substrate and on the inner side of each operating hole. 8-12 clamping units are spaced apart on the inner side of the inter-stage mounting hole substrate, while 1-3 clamping units are typically arranged on the inner side of each operating hole. Limiting units are provided on the outer edges of the cover mounting hole substrate and the inter-stage mounting hole substrate, corresponding to the clamping units. Each clamping unit includes a pressure block 5, on which a mounting hole substrate connector 6 and a mating frame clamping member 7 are provided.

[0042] The limiting unit includes a lateral limiting structure. Both the cover mounting hole base plate and the interstage mounting hole base plate are provided with a lateral limiting adjustment mechanism 8 for adjusting the lateral limiting structure, thereby achieving restorative adjustment of the lateral deformation of the fairing product. In an optional embodiment, the lateral limiting structure on the cover mounting hole base plate includes cover mounting hole limiting blocks 9 detachably mounted on both sides of the cover mounting hole base plate. The lateral limiting structure on the interstage mounting hole base plate includes interstage mounting hole limiting blocks 10 detachably mounted on both sides of the interstage mounting hole base plate.

[0043] In an optional embodiment, the lateral limiting adjustment mechanism includes a lateral adjusting member 20 and a connecting seat 21 rotatably mounted at the front end of the lateral adjusting member. The connecting seat includes a mating groove 28, in which a rotating member 29 is installed. The rotating member extends through the seat plate 30 of the connecting seat and is axially fixed to the lateral adjusting member. The head 31 of the rotating member in the mating groove of the connecting seat is limited by the seat plate. That is, when the lateral adjusting member moves axially, the connecting seat moves accordingly, and the two will not separate. When drilling holes in the fairing half-cover docking frame 32, the lateral adjusting member is threadedly screwed onto the side plate 22 on the outer edge of the fairing mounting hole base plate. The connecting seat is fixed to the limiting block for the fairing mounting hole. When the lateral adjusting member is screwed, the limiting block for the fairing mounting hole is displaced. By screwing the lateral adjusting member, the limiting block for the fairing mounting hole can be pressed and its shape adjusted, thereby maximizing the drilling accuracy.

[0044] It should be noted that the side plate can be integrally formed with the fairing mounting hole base plate, or it can be an assembled structure; the specific design is not limited. In this case, the limiting unit longitudinally limits the fairing and keeps the fairing 26 aligned with the fairing mounting hole base plate. In this state, the fairing's shape is consistent with its assembled form. The clamping unit fixes the fairing mounting hole base plate to the fairing (dating frame) for quick drilling. Typically, lifting holes are provided on both sides of the fairing mounting hole base plate, and lifting rings 27 can be detachably installed in these lifting holes for convenient lifting of the fairing mounting hole base plate.

[0045] When the lateral limiting adjustment mechanism is used for drilling holes in the fairing interstage docking frame, the lateral adjustment component is screwed onto the base plate 23 on the outer edge of the interstage mounting hole base plate. The lateral adjustment component can be a screw. The connecting seat is fixed to the limiting block for the fairing mounting hole. When the lateral adjustment component is screwed, the limiting block for the interstage mounting hole is displaced. By screwing the lateral adjustment component, the limiting block for the interstage mounting hole can be pressed against the fairing and its shape adjusted, thereby maximizing the drilling accuracy. It should be noted that the base plate can be an integrally formed structure with the interstage mounting hole base plate, or it can be an assembled structure; no specific limitation is made here.

[0046] An extension plate 11 is detachably mounted on the mounting hole base plate of the fairing, and a longitudinal limiting structure for the fairing is provided at the end of the extension plate. The longitudinal limiting structure for the fairing includes a longitudinal limiting block 12. A longitudinal limiting adjustment mechanism 13 for adjusting the position of the longitudinal limiting block is provided at the end of the extension plate to realize the restorative adjustment of the longitudinal deformation of the fairing product.

[0047] In an optional embodiment, the longitudinal limiting adjustment mechanism includes a longitudinal adjusting member 24 and a connecting seat rotatably mounted at the front end of the longitudinal adjusting member. When using the longitudinal limiting adjustment mechanism, the longitudinal adjusting member is screwed onto the end plate 25 of the extension plate, and the connecting seat of the longitudinal adjusting mechanism is rotatably mounted on the front end of the longitudinal adjusting member. The longitudinal adjusting member can be a screw. Specifically, the connecting seat of the longitudinal limiting adjustment mechanism and the connecting seat of the lateral limiting adjustment mechanism can have the same structure, that is, the connection structure between the longitudinal adjusting member and its connecting seat is the same as that in the lateral limiting adjustment mechanism. Of course, those skilled in the art can also use other structural forms, as long as the longitudinal adjusting member can drive the longitudinal limiting block to move by operation, which will not be elaborated here.

[0048] The aforementioned pressure block is L-shaped and includes a pressure plate portion 14 and a support portion 15. When used for drilling holes in the fairing half-cover, the inner side of the pressure plate portion presses against the fairing mounting hole substrate, and the inner side of the support portion presses against the inner wall 33 of the operating hole (i.e., presses against the inner wall of the operating hole near the outer edge of the fairing mounting hole substrate). When used for drilling holes in the end face of a fairing segment, the inner side of the pressure plate portion presses against the interstage mounting hole substrate, and the inner side of the support portion presses against the inner wall of the interstage mounting hole substrate.

[0049] The aforementioned extension plate is fixed to the fairing mounting hole base plate via extension plate connector 16. The working surface 34 of the extension plate is located on the side of the fairing mounting hole base plate where the drill bushing is not installed. This working surface is for contacting the fairing half-cover docking frame. The extension plate connector includes bolts or positioning pins. The extension plate includes a positioning part 17 and a docking part 18. The working surface of the extension plate is located below the positioning part, and the docking part is higher than the positioning part. A positioning step 19 is formed at the junction of the docking part and the positioning part. The end face of the fairing mounting hole base plate abuts against the positioning step, effectively ensuring the fitting accuracy between the extension plate and the fairing mounting hole base plate. The longitudinal limiting structure of the fairing on the extension plate adjusts and maintains the axial shape of the fairing to better meet the needs of fairing assembly. In this invention, the extension plate is easy to connect and fix, allowing for quick installation and disassembly, and ensuring the fitting accuracy between it and the end face of the fairing half-cover and the fairing mounting hole base plate. By replacing the extension plates of different lengths, fairing products of various lengths can be adapted within a certain range, reducing the R&D and production investment of the fairing mounting hole substrate and lowering the usage cost.

[0050] A drilling method using the aforementioned fairing docking structure drilling device.

[0051] Includes the following steps:

[0052] The mating surface of the fairing mounting hole base plate on one side is attached to the surface of the fairing half cover mating frame. A drill sleeve is installed on the mating surface of the fairing mounting hole base plate on the other side. Clamping units are installed in each operating hole. The mounting hole base plate connector is used to fix the clamping block of the clamping unit. The lateral shape of the fairing half cover is adjusted by adjusting the mating frame clamping part and the lateral limit adjustment mechanism. The longitudinal shape of the fairing half cover is adjusted by adjusting the longitudinal limit adjustment mechanism.

[0053] When the above-mentioned fairing half-cover shape is adjusted to the fairing assembly state, drilling is performed on each mounting hole using a drill bushing. After drilling is completed on this fairing half-cover, each clamping unit and each extension plate on the fairing mounting hole base plate are removed, and each removed clamping unit is installed on one side of the fairing docking surface that was originally attached to the fairing half-cover docking frame. The other side of the fairing docking surface is used to attach to the surface of another fairing half-cover docking frame (this fairing half-cover is matched with the fairing half-cover that has been drilled, and is used as a fairing segment after fairing assembly). Then, drilling is performed on each mounting hole of the current fairing half-cover using a drill bushing. After the drilling is completed, the drilling device is disassembled to perform fairing assembly.

[0054] The interstage positioning surface on one side of the interstage mounting hole substrate is fitted with the end face of the fairing segment. A drill sleeve is installed on the interstage mounting hole substrate, and a clamping unit is installed in the operating hole of the interstage mounting hole substrate. The interstage mounting hole substrate and the clamping unit are fixed by the mounting hole substrate connector. The lateral shape of the fairing half is adjusted by adjusting the docking frame clamping part and the lateral limit adjustment mechanism respectively.

[0055] When the fairing half-cover shape is adjusted to the interstage docking assembly state, drilling operations are performed on each mounting hole using a drill bushing. After the current fairing segment is drilled, each clamping unit is removed and installed on the fairing docking profile on one side of the original surface of the fairing segment interstage docking frame. The other side of the interstage positioning profile is used to fit the surface of another fairing segment interstage docking frame (this fairing segment matches the fairing segment that has been drilled, and the mounting holes between the two fairing segments can be accurately aligned, ensuring fairing assembly accuracy). Then, drilling operations are performed on each mounting hole of the current fairing segment using a drill bushing. After the drilling operation is completed, the drilling device is disassembled for interstage assembly operations.

[0056] In this invention, the limiting unit can effectively maintain the shape of the fairing product, thereby effectively avoiding fairing deformation that affects drilling accuracy, laying the foundation for high-precision drilling operations. The drilling operation is simple, the drilling device and the fairing product have high positioning accuracy, and the fixing is stable and reliable. The accuracy of the processed holes is guaranteed, effectively avoiding the complicated adjustment and alignment operations during fairing assembly, thus improving the efficiency of fairing assembly in the later stage and ensuring more reliable assembly accuracy.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fairing docking structure punch apparatus, characterized by: The application relates to a cowl mounting hole base plate and an inter-stage mounting hole base plate; a plurality of operation holes are arranged on the cowl mounting hole base plate, and a plurality of drill bushings are arranged on the cowl mounting hole base plate and the inter-stage mounting hole base plate; the inter-stage mounting hole base plate is in a whole annular structure, and inter-stage positioning profiles are arranged on the two side surfaces of the inter-stage mounting hole base plate; cowl butt joint profiles are arranged on the two side surfaces of the cowl mounting hole base plate; Clamping units are arranged on the inner side of the inter-stage mounting hole base plate and the inner side of each operation hole, and limiting units are arranged on the outer edges of the cowl mounting hole base plate and the inter-stage mounting hole base plate and correspond to the clamping units; the clamping unit comprises a pressing block, and a mounting hole base plate connecting piece and a butt joint frame pressing piece are arranged on the pressing block; The limiting unit comprises a transverse limiting structure piece, and a transverse limiting adjusting mechanism for adjusting the transverse limiting structure piece is arranged on the cowl mounting hole base plate and the inter-stage mounting hole base plate, so that the recovery adjustment of the transverse deformation of the cowl product can be realized; A lengthening plate is detachably arranged on the cowl mounting hole base plate, and a cowl longitudinal limiting structure piece is arranged at the end of the lengthening plate, the cowl longitudinal limiting structure piece comprises a longitudinal limiting block, and a longitudinal limiting adjusting mechanism for adjusting the position of the longitudinal limiting block is arranged at the end of the lengthening plate, so that the recovery adjustment of the longitudinal deformation of the cowl product can be realized.

2. The fairing docking structure piercing device of claim 1, wherein: The pressing block is in an L shape and comprises a pressing plate part and a supporting part; the inner side of the pressing plate part is used for pressing the cowl mounting hole base plate; and the inner side of the supporting part is used for pressing the inner wall of the operation hole.

3. The fairing docking structure piercing device of claim 1, wherein: Two groups of clamping units are arranged on the inner side of each operation hole.

4. The fairing docking structure punch apparatus of claim 1, wherein: The transverse limiting structure piece on the cowl mounting hole base plate comprises a cowl mounting hole limiting block which is detachably arranged on the butt joint profiles of the two sides of the cowl mounting hole base plate.

5. The fairing docking structure punch apparatus of claim 1, wherein: The transverse limiting structure piece on the inter-stage mounting hole base plate comprises an inter-stage mounting hole limiting block which is detachably arranged on the butt joint profiles of the two sides of the inter-stage mounting hole base plate.

6. The fairing docking structure punch apparatus of claim 1, wherein: The lengthening plate is fixed to the cowl mounting hole base plate through a lengthening plate connecting piece, and the working profile of the lengthening plate is arranged on the side of the cowl mounting hole base plate which is not provided with the drill bushing.

7. A fairing docking structure piercing device according to claim 6, wherein: The lengthening plate connecting piece comprises a bolt or a positioning pin.

8. The fairing docking structure piercing device of claim 7, wherein: The lengthening plate comprises a positioning part and a butt joint part, the butt joint part is higher than the positioning part, a positioning step is formed at the joint of the butt joint part and the positioning part, and the end surface of the cowl mounting hole base plate abuts against the positioning step.

9. A method of perforating the fairing docking structure of claim 1, wherein, The application relates to a cowl mounting hole base plate and an inter-stage mounting hole base plate; a plurality of operation holes are arranged on the cowl mounting hole base plate, and a plurality of drill bushings are arranged on the cowl mounting hole base plate and the inter-stage mounting hole base plate; the inter-stage mounting hole base plate is in a whole annular structure, and inter-stage positioning profiles are arranged on the two side surfaces of the inter-stage mounting hole base plate; cowl butt joint profiles are arranged on the two side surfaces of the cowl mounting hole base plate; Clamping units are arranged on the inner side of the inter-stage mounting hole base plate and the inner side of each operation hole, and limiting units are arranged on the outer edges of the cowl mounting hole base plate and the inter-stage mounting hole base plate and correspond to the clamping units; the clamping unit comprises a pressing block, and a mounting hole base plate connecting piece and a butt joint frame pressing piece are arranged on the pressing block; The limiting unit comprises a transverse limiting structure piece, and a transverse limiting adjusting mechanism for adjusting the transverse limiting structure piece is arranged on the cowl mounting hole base plate and the inter-stage mounting hole base plate, so that the recovery adjustment of the transverse deformation of the cowl product can be realized; A lengthening plate is detachably arranged on the cowl mounting hole base plate, and a cowl longitudinal limiting structure piece is arranged at the end of the lengthening plate, the cowl longitudinal limiting structure piece comprises a longitudinal limiting block, and a longitudinal limiting adjusting mechanism for adjusting the position of the longitudinal limiting block is arranged at the end of the lengthening plate, so that the recovery adjustment of the longitudinal deformation of the cowl product can be realized. The pressing block is in an L shape and comprises a pressing plate part and a supporting part; the inner side of the pressing plate part is used for pressing the cowl mounting hole base plate; and the inner side of the supporting part is used for pressing the inner wall of the operation hole. Two groups of clamping units are arranged on the inner side of each operation hole. The transverse limiting structure piece on the cowl mounting hole base plate comprises a cowl mounting hole limiting block which is detachably arranged on the butt joint profiles of the two sides of the cowl mounting hole base plate. The transverse limiting structure piece on the inter-stage mounting hole base plate comprises an inter-stage mounting hole limiting block which is detachably arranged on the butt joint profiles of the two sides of the inter-stage mounting hole base plate. The lengthening plate is fixed to the cowl mounting hole base plate through a lengthening plate connecting piece, and the working profile of the lengthening plate is arranged on the side of the cowl mounting hole base plate which is not provided with the drill bushing. The lengthening plate connecting piece comprises a bolt or a positioning pin. The lengthening plate comprises a positioning part and a butt joint part, the butt joint part is higher than the positioning part, a positioning step is formed at the joint of the butt joint part and the positioning part, and the end surface of the cowl mounting hole base plate abuts against the positioning step. The application relates to a cowl mounting hole base plate and an inter-stage mounting hole base plate; a plurality of operation holes are arranged on the cowl mounting hole base plate, and a plurality of drill bushings are arranged on the cowl mounting hole base plate and the inter-stage mounting hole base plate; the inter-stage mounting hole base plate is in a whole annular structure, and inter-stage positioning profiles are arranged on the two side surfaces of the inter-stage mounting hole base plate; cowl butt joint profiles are arranged on the two side surfaces of the cowl mounting hole base plate; Clamping units are arranged on the inner side of the inter-stage mounting hole base plate and the inner side of each operation hole, and limiting units are arranged on the outer edges of the cowl mounting hole base plate and the inter-stage mounting hole base plate and correspond to the clamping units; the clamping unit comprises a pressing block, and a mounting hole base plate connecting piece and a butt joint frame pressing piece are arranged on the pressing block; The limiting unit comprises a transverse limiting structure piece, and a transverse limiting adjusting mechanism for adjusting the transverse limiting structure piece is arranged on the cowl mounting hole base plate and the inter-stage mounting hole base plate, so that the recovery adjustment of the transverse deformation of the cowl product can be realized; A lengthening plate is detachably arranged on the cowl mounting hole base plate, and a cowl longitudinal limiting structure piece is arranged at the end of the lengthening plate, the cowl longitudinal limiting structure piece comprises a longitudinal limiting block, and a longitudinal limiting adjusting mechanism for adjusting the position of the longitudinal limiting block is arranged at the end of the lengthening plate, so that the recovery adjustment of the longitudinal deformation of the cowl product can be realized. The pressing block is in an L shape and comprises a pressing plate part and a supporting part; the inner side of the pressing plate part is used for pressing the cowl mounting hole base plate; and the inner side of the supporting part is used for pressing the inner wall of the operation hole. Two groups of clamping units are arranged on the inner side of each operation hole. The transverse limiting structure piece on the cowl mounting hole base plate comprises a cowl mounting hole limiting block which is detachably arranged on the butt joint profiles of the two sides of the cowl mounting hole base plate. The transverse limiting structure piece on the inter-stage mounting hole base plate comprises an inter-stage mounting hole limiting block which is detachably arranged on the butt joint profiles of the two sides of the inter-stage mounting hole base plate. The lengthening plate is fixed to the cowl mounting hole base plate through a lengthening plate connecting piece, and the working profile of the lengthening plate is arranged on the side of the cowl mounting hole base plate which is not provided with the drill bushing. The lengthening plate connecting piece comprises a bolt or a positioning pin. The lengthening plate comprises a positioning part and a butt joint part, the butt joint part is higher than the positioning part, a positioning step is formed at the joint of the butt joint part and the positioning part, and the end surface of the cowl mounting hole base plate abuts against the positioning step. The application relates to a cowl mounting hole base plate and an inter-stage mounting hole base plate; a plurality of operation holes are arranged on the cowl mounting hole base plate, and a plurality of drill bushings are arranged on the cowl mounting hole base plate and the inter-stage mounting hole base plate; When the above-mentioned fairing half-caps are adjusted to the assembled state, the drilling operation of each mounting hole is performed by means of the drill sleeve. After the drilling operation of the half-caps is completed, each clamping unit on the fairing half-cap mounting hole base plate is detached, and each clamping unit is installed on the fairing half-cap abutting frame surface on one side of the assembled fairing, and the other side of the fairing abutting frame surface is abutted with the abutting frame surface of the other half-cap. Then, the drilling operation of each mounting hole is performed on the current fairing half-cap by means of the drill sleeve. After the drilling operation is completed, the drilling device is detached to perform the assembly operation of the fairing. The inter-stage positioning profile on one side of the inter-stage mounting hole base plate is abutted with the end surface of the fairing segment, the drill sleeve is installed on the inter-stage mounting hole base plate, and the clamping unit is installed in the operation hole of the inter-stage mounting hole base plate. The inter-stage mounting hole base plate and the pressing block of the clamping unit are fixed by means of the mounting hole base plate connector, and the lateral direction form of the fairing half-cap is adjusted by adjusting the abutting frame pressing member and the lateral limiting adjustment mechanism. When the above-mentioned fairing half-caps are adjusted to the assembled state, the drilling operation of each mounting hole is performed by means of the drill sleeve. After the drilling operation of the half-caps is completed, each clamping unit on the fairing half-cap mounting hole base plate is detached, and each clamping unit is installed on the fairing half-cap abutting frame surface on one side of the assembled fairing, and the other side of the fairing abutting frame surface is abutted with the abutting frame surface of the other half-cap. Then, the drilling operation of each mounting hole is performed on the current fairing half-cap by means of the drill sleeve. After the drilling operation is completed, the drilling device is detached to perform the assembly operation of the fairing.

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