Composite skirt processing method and equipment

Abstract

The invention relates to the technical field of part machining, and provides a composite skirt machining method and equipment. The method sequentially comprises the following steps that S1, a workpiece is clamped and fixed; s2, a guide plane is milled at the to-be-machined position of the through hole; s3, a positioning hole coaxial with the to-be-machined through hole is drilled in the guide plane; s4, a to-be-machined through hole is drilled in the position of the positioning hole; and S5, a strip-shaped through groove is cut above the machined through hole. According to the invention, the guide plane converts the drill bit from point contact cut-in to surface contact cut-in, so that unbalance of initial cutting force and deflection of the drill bit are effectively eliminated; and the positioning hole provides coaxial guide and support for subsequent full-size drilling, the radial run-out of the drill bit in the depth process is restrained, the problems of hole position deviation and axis deflection which are prone to occurring when direct drilling is conducted on the side wall of the composite skirt are well solved, and the position precision and consistency of the through hole are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of parts processing technology, and more specifically, to a method and equipment for processing composite material skirts. Background Technology

[0002] To achieve interstage connections or connections with other components, rocket / missile engine casings rely on interstage connection structures to effectively transfer thrust between stages. These connection structures withstand various loads, including axial tension, axial compression, circumferential tension, bending, and shear, resulting in complex load conditions. These connection structures are often skirt-like and made of composite materials, hence they are commonly referred to as composite material skirts. Figures 1-4 As shown, a composite material skirt typically includes a flange end face area and a cylindrical face area. The flange end face area needs to be connected to other components. The cylindrical face area is a ring structure with varying thickness (both its inner and outer walls have a certain taper). The cylindrical face area is connected to the flange end face area. Several anti-crack grooves are evenly distributed around the circumference of the cylindrical face area. The anti-crack grooves include strip-shaped through grooves and through holes.

[0003] After the composite skirt is prepared and formed through composite material laying and thermoforming, crack-resistant grooves still need to be machined in the cylindrical area. Currently, the common processing method is to clamp and fix the composite skirt, drill through holes first, and then cut grooves, as disclosed in patent document CN116604344A. However, since the cylindrical area is curved and has a certain taper, the drill tip makes point contact with the curved surface during drilling, which easily leads to an imbalance of cutting force in the initial stage, resulting in significant radial off-center load. This off-center load can easily cause drill bit bending, workpiece micro-displacement, and elastic deformation of the process system. Under the amplification effect of the curved surface geometry, the actual position and axial direction of the through hole deviate from the theoretical design, resulting in substandard positional accuracy and poor consistency of the through hole. Summary of the Invention

[0004] The purpose of this invention is to provide a method and equipment for processing composite material skirts, so as to solve the above-mentioned defects of the prior art.

[0005] This invention is achieved through the following technical solution: A method for processing a composite material skirt includes the following steps: S1. Clamp and fix the workpiece; S2. Mill a guide plane at the location where the through hole is to be machined; S3. Drill a positioning hole on the guide plane that is coaxial with the through hole to be processed; S4. Drill the through hole to be processed at the positioning hole; S5. Cut a strip-shaped through-hole above the machined through-hole.

[0006] The present invention also provides a composite material skirt processing device, which adopts the above method and includes a clamping mechanism, a drilling assembly and a grooving assembly, as well as a milling assembly and a drilling positioning hole assembly. The milling assembly, the drilling positioning hole assembly, the drilling assembly and the grooving assembly are arranged sequentially at intervals along the circumferential direction of the clamping mechanism. The milling assembly and the drilling positioning hole assembly have the same structure as the drilling assembly. The milling assembly is equipped with a milling cutter, and the drilling positioning hole assembly and the drilling assembly are equipped with drill bits.

[0007] Furthermore, the milling assembly, the drilling positioning hole assembly, and the drilling assembly all include a drilling base, a transverse linear module, a drilling spindle, and a drilling motor. The drilling base is fixedly installed, the fixed part of the transverse linear module is installed on the drilling base, the drilling spindle is connected to the drilling motor, and the drilling motor is installed on the sliding part of the transverse linear module.

[0008] Furthermore, the grooving assembly includes a grooving base, a lifting linear module, a grooving spindle, a grooving cutter, and a grooving motor. The grooving base is fixedly installed, the fixed part of the lifting linear module is installed on the grooving base, the grooving spindle is drivenly connected to the grooving motor, the grooving motor is installed on the sliding part of the lifting linear module, and the grooving cutter is connected to the grooving spindle.

[0009] Furthermore, the clamping mechanism includes a rotating assembly and a clamping assembly. The rotating assembly includes a rotating base plate and a rotating drive component that drives its rotation. The clamping assembly includes several expanding clamping cores, several workpiece support seats, a clamping timing disc rotatably mounted on the top of the rotating base plate, and a clamping drive component that drives its rotation. The workpiece support seats are fixed on the rotating base plate. A clamping shaft is connected to the inner side of the expanding clamping core. The clamping shaft is slidably mounted on the rotating base plate and has a guide member at its top. The clamping timing disc has several arc-shaped grooves along its circumference. The guide members are correspondingly located in the arc-shaped grooves so that the clamping timing disc can rotate and push the guide members, causing the clamping shaft to slide and drive the expanding clamping cores to expand outward or retract inward. The clamping drive component includes a linear displacement drive element, a connecting seat mounted on the clamping timing disc, and a fixed seat mounted on the rotating base plate. One end of the linear displacement drive element is fixedly connected to the connecting seat, and the other end is hinged to the fixed seat.

[0010] Furthermore, the expanding clamping core is provided with an upper clamping part and a lower clamping part for clamping two different workpieces; the workpiece support base is provided with an upper support part and a lower support part for supporting two different workpieces.

[0011] Furthermore, at least one of the upper and lower support portions of the workpiece support is provided with a proximity switch for detecting the workpiece.

[0012] Furthermore, the workpiece support is fixedly provided with a first workpiece guide block, and the rotating base plate is fixedly provided with a second workpiece guide block.

[0013] Furthermore, the expansion clamping core is provided with a clamping assembly for clamping the workpiece. The clamping assembly includes a lower pressure seat, a pressure block, and a lower pressure driving element for driving the pressure block to rise and fall. The lower pressure seat is fixed to the top of the expansion clamping core, and the lower pressure driving element is installed on the lower pressure seat.

[0014] Furthermore, the pressure block includes an upper pressure block and a lower pressure block for pressing different workpieces. The upper pressure block is located above the expansion clamping core and connected to the lower pressure driving member. The lower pressure block is located below the expansion clamping core and is fixedly connected to the upper pressure block via a connecting rod.

[0015] The technical solution of this invention has at least the following advantages and beneficial effects: In this invention, by first milling a guide plane at the location to be processed, and then drilling a positioning hole on the guide plane, a precise benchmark and guide are provided for the final through-hole processing. Specifically, the guide plane changes the drill bit from "point contact" to "surface contact" entry, effectively eliminating the imbalance of the initial cutting force and drill bit wobble; while the positioning hole provides coaxial guidance and support for subsequent full-size drilling, constraining the radial runout of the drill bit during the drilling process, effectively solving the problems of hole position offset and axis misalignment that easily occur when directly drilling on the sidewall of composite material skirts, and significantly improving the positional accuracy and consistency of the through hole. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of workpiece one; Figure 2 This is a sectional view of workpiece one; Figure 3 This is a schematic diagram of the structure of workpiece two; Figure 4 This is a sectional view of workpiece two; Figure 5 A flowchart of a composite material skirt processing method provided by the present invention; Figure 6 This is a schematic diagram of the structure of a composite material skirt processing equipment provided by the present invention; Figure 7 This is a schematic diagram of the milling assembly. Figure 8 This is a schematic diagram of the grooving assembly. Figure 9 This is a schematic diagram of the clamping mechanism. Figure 10 This is a structural diagram of the clamping mechanism (with the top cover of the hidden protective shield); Figure 11 This is a schematic diagram of the connection structure of the clamping drive component; Figure 12 A schematic diagram of the connection structure for expanding the clamping core; Figure 13 A schematic diagram of the structure of the expansion clamping core; Figure 14 A schematic diagram of the connection structure of the workpiece support base; Figure 15 This is a schematic diagram of the workpiece support base. Figure 16 This is a schematic diagram of the clamping state of workpiece one; Figure 17 This is a schematic diagram of the clamping state of workpiece two; Reference numerals: 100-clamping mechanism, 1-worktable, 2-rotating base plate, 201-connecting shaft, 3-rotational drive component, 4-expanding clamping core, 401-upper clamping part, 402-lower clamping part, 5-workpiece support seat, 501-upper support part, 502-lower support part, 6-clamping synchronous disc, 601-arc-shaped slide groove, 7-clamping drive component, 701-linear displacement drive element, 702-connecting seat, 703-fixed seat, 8-clamping shaft, 9-guide component, 10-proximity switch, 11-first workpiece guide block, 12-second 13-Workpiece guide block, 13-Clamping assembly, 1301-Lower pressure seat, 1302-Lower pressure drive element, 1303-Upper pressure block, 1304-Lower pressure block, 14-Protective cover, 15-Workpiece 1, 16-Workpiece 2, 200-Milling assembly, 17-Drilling base, 18-Transverse linear module, 19-Drilling spindle, 20-Drilling motor, 300-Drilling positioning hole assembly, 400-Drilling assembly, 500-Grooving assembly, 21-Grooving base, 22-Lifting linear module, 23-Grooving spindle, 24-Grooving tool, 25-Grooving motor. Detailed Implementation

[0017] refer to Figure 5 A method for processing a composite material skirt includes the following steps: S1. Clamp and fix the workpiece, thus achieving workpiece clamping; S2. Mill a guide plane at the location to be machined in the through hole. This should be understood as milling a shallow blind hole at the location to be machined in the through hole with a milling cutter. The bottom of the shallow blind hole is the guide plane. The diameter of the shallow blind hole is the same as the diameter of the through hole to be machined. The depth of the shallow blind hole is not limited. For example, 0.2mm-0.5mm is acceptable. S3. Drill a positioning hole on the guide plane that is coaxial with the through hole to be processed; S4. Drill the through hole to be processed at the positioning hole; S5. Cut a strip-shaped through-hole above the machined through-hole.

[0018] This invention provides a precise reference and guide for the final through-hole machining by first milling a guide plane at the location to be machined, and then drilling a positioning hole on the guide plane. Specifically, the guide plane changes the drill bit's entry from "point contact" to "surface contact," effectively eliminating the imbalance of initial cutting forces and drill bit runout; while the positioning hole provides coaxial guidance and support for subsequent full-size drilling, constraining the radial runout of the drill bit during the drilling process. This effectively solves the problems of hole position offset and axis misalignment that easily occur when drilling directly into the sidewalls of composite material skirts, significantly improving the positional accuracy and consistency of the through hole.

[0019] refer to Figure 6 This embodiment also provides a composite material skirt processing equipment, employing the above-described method, including a clamping mechanism 100, a drilling assembly 400, a grooving assembly 500, a milling assembly 200, and a drilling positioning hole assembly 300. In practical applications, the clamping mechanism 100, drilling assembly 400, grooving assembly 500, milling assembly 200, and drilling positioning hole assembly 300 are all mounted on a worktable 1, with the bottom of the worktable 1 supported at the processing location by a frame (not shown). The milling assembly 200, drilling positioning hole assembly 300, drilling assembly 400, and grooving assembly 500 are arranged sequentially and at intervals along the circumferential direction of the clamping mechanism 100, forming four sequentially operated workstations.

[0020] The milling assembly 200 and the drilling positioning hole assembly 300 have the same structure as the drilling assembly 400. The milling assembly 200 is equipped with a milling cutter (not shown in the figure), and the drilling positioning hole assembly 300 and the drilling assembly 400 are equipped with drill bits (not shown in the figure). That is, the milling assembly 200, the drilling positioning hole assembly 300, and the drilling assembly 400 have the same structure, only the machining tools they are equipped with are different. (Reference) Figure 7 Specifically, the milling assembly 200, the drilling positioning hole assembly 300, and the drilling assembly 400 all include a drilling base 17, a transverse linear module 18, a drilling spindle 19, and a drilling motor 20. The drilling base 17 is fixedly mounted on the worktable 1. The fixed part of the transverse linear module 18 is mounted on the drilling base 17. The drilling spindle 19 is connected to the drilling motor 20, and the drilling motor 20 is mounted on the sliding part of the transverse linear module 18. It is easy to understand that the machining tool is mounted on the drilling spindle 19, and the drilling motor 20 drives the machining tool to rotate through the drilling spindle 19. The sliding part of the transverse linear module 18 drives the drilling motor 20 (as well as the drilling spindle 19 and the machining tool) to move along the axial direction of the through hole to be machined.

[0021] refer to Figure 8The grooving assembly 500 includes a grooving base 21, a lifting linear module 22, a grooving spindle 23, and a grooving motor 25. The grooving base 21 is fixedly installed. The fixed part of the lifting linear module 22 is installed on the grooving base 21. The grooving spindle 23 is connected to the grooving motor 25. The grooving motor 25 is installed on the sliding part of the lifting linear module 22. The grooving cutter 24 is connected to the grooving spindle 23. The grooving motor 25 drives the cutting cutter to rotate through the grooving spindle 23. The sliding part of the lifting linear module drives the grooving motor 25 (as well as the grooving spindle 23 and the grooving cutter 24) to move up and down (that is, move along the length of the strip groove).

[0022] Those skilled in the art should know that a linear module, also known as a Cartesian robot or linear slide, works by precisely converting the rotational motion of a motor into the linear motion of a slide through transmission components (such as ball screws or synchronous belts).

[0023] refer to Figure 9 and Figure 10 The clamping mechanism includes a rotating assembly and a clamping assembly. The rotating assembly includes a rotating base plate 2 and a rotating drive component 3 that drives its rotation. In practical applications, the rotating drive component 3 is mounted on the worktable 1. The specific form of the rotating drive component 3 is not limited; for example, a hollow rotary platform can be directly purchased. The manufacturer and model of the hollow rotary platform are not limited; for example, the GD200R hollow rotary platform manufactured by Jinghe can be used. It is easy to understand that after the workpiece is clamped in place, the rotating drive component 3 drives the rotating base plate 2 and the clamping assembly to rotate, thereby machining the anti-crack grooves at different positions on the circumference of the workpiece.

[0024] The clamping assembly includes several expanding clamping cores 4, several workpiece support seats 5, a clamping synchronization disk 6 rotatably mounted on the top of the rotating base plate 2, and a clamping drive component 7 that drives its rotation. In practical applications, a connecting shaft 201 (see reference) is provided on the top of the rotating base plate 2. Figure 11 The clamping synchronous disk 6 is connected to the connecting shaft 201 via bearings to ensure smooth rotation. Furthermore, it is easy to understand that since the workpiece is annular, the workpiece support 5 and the expansion clamping core 4 are evenly spaced along the circumference. The number of workpiece support 5 and expansion clamping core 4 is not limited; for example, six are used in this embodiment, and other numbers can certainly be selected in other embodiments.

[0025] refer to Figures 11-15The workpiece support 5 is fixed on the rotating base plate 2. A clamping shaft 8 is connected (e.g., by screws) to the inner side of the expansion clamping core 4. The clamping shaft 8 is slidably mounted on the rotating base plate 2 and has a guide member 9 at its top. The sliding arrangement of the clamping shaft 8 is not limited. For example, the clamping shaft 8 can be connected to the rotating base plate 2 via a linear guide rail. The linear guide rail, as a high-precision linear motion guide component, typically consists of a guide rail and a slider. The slider can perform high-precision, low-friction linear motion along the guide rail, providing extremely high guiding accuracy and motion rigidity for the radial sliding of the clamping shaft 8. This effectively eliminates radial wobbling and swaying that may occur during the sliding process, ensuring the synchronicity of the trajectories of all expansion clamping cores 4 during expansion or retraction. In other embodiments, other methods can also be used, such as providing a groove on the rotating base plate 2 to cooperate with the clamping shaft 8.

[0026] In this embodiment, the guide member 9 uses a cam bearing, which is a rolling bearing with a flanged outer ring. Its outer ring can directly serve as a guide protrusion to engage with the arc-shaped groove 601 on the clamping synchronous disc 6, converting sliding friction into rolling friction. This significantly reduces the frictional resistance and wear of the guide member 9 as it moves within the arc-shaped groove 601, making the rotation of the clamping synchronous disc 6 smoother and easier, and reducing the load on the drive components. In other embodiments, the guide member 9 can, of course, also be a pin.

[0027] The clamping synchronous disk 6 is provided with several arc-shaped grooves 601 along the circumference. The guide members 9 are correspondingly arranged in the arc-shaped grooves 601. When the clamping synchronous disk 6 rotates, it can squeeze and push the guide members 9, thereby causing the clamping shaft 8 to slide and drive the expansion clamping core 4 to expand outward or contract inward, so as to realize the clamping or loosening of the workpiece.

[0028] Refer again Figure 11 The clamping drive component 7 includes a linear displacement drive element 701, a connecting seat 702, and a fixed seat 703. One end of the linear displacement drive element 701 is fixed to the connecting seat 702, and the other end is hinged to the fixed seat 703. Specifically, the connecting seat 702 is fixed to the clamping synchronous disk 6 by screws, and the fixed seat 703 is fixed to the rotating base plate 2 by screws. One end of the linear displacement drive element 701 is threaded to the connecting seat 702, and the linear displacement drive element 701 is hinged to the fixed seat 703 by a pin. The clamping synchronous disk 6 can be rotated by the extension and retraction movement of the linear displacement drive element 701.

[0029] As can be seen, this invention uses a linkage structure consisting of a clamping synchronous disc 6, an arc-shaped sliding groove 601, and a guide member 9 to drive the expansion clamping core 4 to expand or retract, thereby achieving workpiece clamping or release. Simultaneously, the extension and retraction of the linear displacement drive element 701 directly drives the clamping synchronous disc 6 to rotate, completely eliminating the traditional gear-driven method. This driving method completely eliminates the inherent meshing backlash and return error of gear transmission, significantly improving the synchronization accuracy and repeatability of the clamping motion. Furthermore, this driving method primarily occupies the axial space above the clamping synchronous disc 6, resulting in a more compact layout and greatly reducing the radial space occupied by the transmission structure. This allows the clamping mechanism to more flexibly adapt to small-diameter composite material skirt-shaped workpieces with limited internal cavity space.

[0030] Refer again Figure 13 The expanding clamping core 4 is equipped with an upper clamping part 401 and a lower clamping part 402 for clamping two different workpieces. It is easy to understand that both the upper clamping part 401 and the lower clamping part 402 have an arc-shaped convex structure. The workpiece support base 5 is equipped with an upper support part 501 and a lower support part 502 for supporting two different workpieces. This design allows the same clamping mechanism to simultaneously accommodate two different specifications of workpieces, enhancing the versatility of the clamping mechanism and the flexibility of the production line. It eliminates the need to change to special fixtures for different workpieces, significantly reducing tooling changeover time and equipment adjustment costs, making it suitable for multi-variety, small-batch production modes. For example, [the following text is incomplete and requires further context: "for example,..."] Figure 1 and Figure 2 The provided workpiece is defined as workpiece 15. Figure 3 and Figure 4 The provided workpiece is defined as workpiece two 16, wherein the length of workpiece one 15 is less than the length of workpiece two 16. The clamping state of workpiece one 15 is as follows. Figure 16 As shown, the clamping state of workpiece 216 is as follows: Figure 17 As shown, in practical applications, the upper clamping part 401 and the upper support part 501 are suitable for workpiece 15. The upper clamping part 401 matches the inner wall of the flange end face area of ​​workpiece 15, and the upper support part 501 contacts the end of the flange end face area of ​​workpiece 15. Similarly, the lower clamping part 402 and the lower support part 502 are suitable for workpiece 2 16. The lower clamping part 402 matches the inner wall of the flange end face area of ​​workpiece 2 16, and the lower support part 502 contacts the end of the flange end face area of ​​workpiece 2 16.

[0031] Refer again Figure 15In this embodiment, one of the workpiece support seats 5 has an upper support portion 501 and a lower support portion 502 equipped with a proximity switch 10 for detecting the workpiece. The proximity switch 10 is a non-contact sensor used to detect whether the workpiece has been accurately placed in the support position. When the workpiece is in place, the proximity switch 10 sends a signal, and the control system can automatically start the clamping process or proceed to the next operation accordingly, realizing real-time monitoring and feedback of the workpiece clamping status, and avoiding the risk of equipment collision or workpiece damage caused by accidental start of processing due to the workpiece not being placed in place. The manufacturer and model of the proximity switch 10 are not limited; for example, the E2B-S08LS01-WP-B1 type proximity switch manufactured by Omron can be selected. It is easy to understand that in other embodiments, proximity switches 10 can also be set at corresponding positions on some or all of the other workpiece support seats 5.

[0032] The expansion clamping core 4 is equipped with a clamping assembly 13 for clamping the workpiece. The clamping assembly 13 includes a lower pressure seat 1301, a pressure block, and a downward pressure driving element 1302 for driving the pressure block to rise and fall. The lower pressure seat 1301 is fixed to the top of the expansion clamping core 4, and the downward pressure driving element 1302 is mounted on the lower pressure seat 1301. In practical applications, the downward pressure driving element 1302 drives the pressure block to press down on the step (reference) on the inner wall of the flange end face area of ​​the workpiece. Figure 2 and Figure 4 At this location, together with the expanding clamping core 4, a composite clamping state of radial clamping and axial pressing is formed, effectively ensuring the overall rigidity of the workpiece during processing and effectively suppressing workpiece micro-movement or deformation caused by cutting force, vibration, or centrifugal force. Further, the pressure block includes an upper pressure block 1303 and a lower pressure block 1304 for pressing different workpieces. The upper pressure block 1303 is located above the expanding clamping core 4 and connected to the lower pressing drive element. The lower pressure block 1304 is located below the expanding clamping core 4 and is fixedly connected to the upper pressure block 1303 via a connecting rod, for example, the two ends of the connecting rod are connected to the upper pressure block 1303 and the lower pressure block 1304 respectively by screws. It is easy to understand that the upper pressure block 1303 and the lower pressure block 1304 are equivalent to a single unit, capable of synchronous movement under the drive of the lower pressing drive element 1302. In practical applications, the upper pressure block 1303 is suitable for the aforementioned workpiece one 15, and the lower pressure block 1304 is suitable for the aforementioned workpiece two 16.

[0033] In this embodiment, both the downward pressure drive element 1302 and the aforementioned linear displacement drive element 701 are selected as cylinders. As a standardized linear actuator driven by compressed air, the cylinder has a simple structure, rapid action, and is easy to control and maintain. This gives the entire clamping mechanism the advantages of fast response speed and stable power output, meeting the cycle time requirements of high-speed production lines. Furthermore, the pneumatic system is easy to integrate with the factory's existing air supply and PLC control system, facilitating automated control and modular design of the production line. In other embodiments, the downward pressure drive element 1302 and the linear displacement drive element 701 can, of course, be other options, such as electric cylinders or hydraulic cylinders.

[0034] The workpiece support 5 is fixedly equipped with a first workpiece guide block 11, and the rotating base plate 2 is fixedly equipped with a second workpiece guide block 12. The fixing method of the first workpiece guide block 11 and the second workpiece guide block 12 is not limited; for example, both can be connected by screws. The first workpiece guide block 11 and the second workpiece guide block 12 are typically designed with an inclined surface structure to guide and coarsely position the workpiece during initial placement, ensuring that the workpiece can smoothly and accurately enter the preset position between the support and the clamping core. This reduces the time and error of manual alignment and effectively prevents the workpiece from shifting or bumping during placement. In practical applications, when workpiece 15 is placed on the upper support 501, it is guided by the first workpiece guide block 11; when workpiece 2 16 is placed on the lower support 502, it is guided by the second workpiece guide block 12.

[0035] Refer again Figure 9 and Figure 10 A protective cover 14 is provided on the top of the outer edge of the rotating base plate 2. The specific structure of the protective cover 14 is not limited. For example, it may include a side shell and a top cover. The side shell may be a single piece or a ring structure formed by splicing together multiple protective plates connected to the rotating base plate 2. It is easy to understand that, based on the provision of the protective cover 14, the aforementioned second workpiece guide block 12 may also be fixed on the side shell of the protective cover 14.

[0036] In addition, those skilled in the art should understand that in practical applications, a corresponding pneumatic-electric slip ring (not shown) should also be configured. The external air source and controller respectively provide power and control signals to the cylinder and sensor that rotate together with the rotating base plate 2 through the stationary end of the pneumatic-electric slip ring, so as to ensure that the pneumatic and electrical components on the rotating assembly can work normally during the rotation process. For example, the pneumatic-electric slip ring is integrated into the rotating shaft system of the rotating drive component 3.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for processing a composite material skirt, characterized in that, The steps are as follows: S1. Clamp and fix the workpiece; S2. Mill a guide plane at the location where the through hole is to be machined; S3. Drill a positioning hole on the guide plane that is coaxial with the through hole to be processed; S4. Drill the through hole to be processed at the positioning hole; S5. Cut a strip-shaped through-hole above the machined through-hole.

2. A composite material skirt processing device, employing the method of claim 1, comprising a clamping mechanism, a drilling assembly, and a grooving assembly, characterized in that, It also includes a milling assembly and a drilling and positioning hole assembly. The milling assembly, drilling and positioning hole assembly, drilling assembly and grooving assembly are arranged sequentially and at intervals along the circumference of the clamping mechanism. The milling assembly and drilling and positioning hole assembly have the same structure as the drilling assembly. The milling assembly is equipped with a milling cutter, and the drilling and positioning hole assembly and drilling assembly are equipped with drill bits.

3. The composite material skirt processing equipment according to claim 2, characterized in that, The milling assembly, the drilling positioning hole assembly, and the drilling assembly all include a drilling base, a transverse linear module, a drilling spindle, and a drilling motor. The drilling base is fixedly installed, the fixed part of the transverse linear module is installed on the drilling base, the drilling spindle is connected to the drilling motor, and the drilling motor is installed on the sliding part of the transverse linear module.

4. The composite material skirt processing equipment according to claim 2, characterized in that, The grooving assembly includes a grooving base, a lifting linear module, a grooving spindle, a grooving cutter, and a grooving motor. The grooving base is fixedly installed, the fixed part of the lifting linear module is installed on the grooving base, the grooving spindle is connected to the grooving motor, the grooving motor is installed on the sliding part of the lifting linear module, and the grooving cutter is connected to the grooving spindle.

5. The composite material skirt processing equipment according to claim 2, characterized in that, The clamping mechanism includes a rotating assembly and a clamping assembly. The rotating assembly includes a rotating base plate and a rotating drive component that drives it to rotate. The clamping assembly includes a plurality of expanding clamping cores, a plurality of workpiece support seats, a clamping synchronization disk rotatably disposed on the top of the rotating base plate, and a clamping drive component that drives it to rotate. The workpiece support is fixed on the rotating base plate. The inner side of the expansion clamping core is connected to the clamping shaft. The clamping shaft is slidably mounted on the rotating base plate and has a guide at the top. The clamping timing disc has several arc-shaped grooves along the circumferential direction. The guide is correspondingly mounted in the arc-shaped grooves. The clamping timing disc rotates and pushes the guide, so that the clamping shaft slides and drives the expansion clamping core to expand outward or contract inward. The clamping drive component includes a linear displacement drive element, a connecting seat on the clamping timing disc, and a fixed seat on the rotating base plate. One end of the linear displacement drive element is fixedly connected to the connecting seat, and the other end is hinged to the fixed seat.

6. The composite material skirt processing equipment according to claim 5, characterized in that, The expansion clamping core is provided with an upper clamping part and a lower clamping part for clamping two different workpieces; the workpiece support base is provided with an upper support part and a lower support part for supporting two different workpieces.

7. The composite material skirt processing equipment according to claim 6, characterized in that, At least one of the upper and lower support portions of the workpiece support is provided with a proximity switch for detecting the workpiece.

8. The composite material skirt processing equipment according to claim 6, characterized in that, The workpiece support is fixedly provided with a first workpiece guide block, and the rotating base plate is fixedly provided with a second workpiece guide block.

9. The composite material skirt processing equipment according to claim 5, characterized in that, The expansion clamping core is provided with a clamping assembly for clamping the workpiece. The clamping assembly includes a lower pressure seat, a pressure block, and a lower pressure drive element for driving the pressure block to rise and fall. The lower pressure seat is fixed to the top of the expansion clamping core, and the lower pressure drive element is installed on the lower pressure seat.

10. The composite material skirt processing equipment according to claim 9, characterized in that, The pressure block includes an upper pressure block and a lower pressure block for pressing different workpieces. The upper pressure block is located above the expansion clamping core and connected to the lower pressure driving component. The lower pressure block is located below the expansion clamping core and is fixedly connected to the upper pressure block via a connecting rod.

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