Processing method and positioning clamping device of complex spatial structure spoiler

Abstract

This invention relates to a processing method and positioning clamping device for a complex spatial structure spoiler. The positioning clamping device, through the rational arrangement of a base, pad, wire guide block, pressure plate assembly, adjusting assembly, pin, and process ball assembly, achieves precise positioning and fixation of the part, effectively solving the problem that existing tooling cannot meet the processing requirements of the new spoiler. By rough turning the outer diameter, inner hole, and end face of the blank, followed by finish turning the inner and outer diameters and end faces, all radial surface dimensions and the total height of the machined part are achieved. Then, wire cutting equipment and a dedicated positioning clamping device are used to cut the part shape, ensuring the part's complex geometric angles, theoretical positions, and thicknesses. This results in a simple and economical manufacturing device structure, employing a rational processing method and optimized cutting parameters to overcome the difficulties in processing and inspecting the part's spatial dimensions, angles, and theoretical positions. It achieves accurate and efficient processing of the part's complex three-dimensional spatial structure.

Description

Technical Field

[0001] This invention belongs to the field of aero-engine component manufacturing technology, and relates to a processing method and positioning and clamping device for a complex spatial structure spoiler. Background Technology

[0002] With the rapid development of the aviation industry, the requirements for the precision and reliability of aero-engine components are constantly increasing. As a key component within the engine intake casing, the spoiler is mainly used to regulate airflow and prevent engine surge that could lead to engine stall or in-flight shutdown, thereby improving the engine's operational stability and reliability.

[0003] However, existing spoiler manufacturing methods have many problems: the process is complex, costly, and the quality of the finished spoilers is unsatisfactory, with numerous machining marks affecting the appearance and service life of the parts. For example, a spoiler for a certain aero-engine is located inside the engine intake casing, mainly to regulate airflow, prevent engine surge that could cause stalling or in-flight engine failure, and improve engine stability and reliability. The spoiler is installed inside the intake casing, and the material is aluminum alloy; the production batch is over 200 pieces per unit. This part has a special structure. From the drawings, it appears small, thin, and like a "straight blade," seemingly simple in shape. In reality, this part is a complex three-dimensional structure containing many spatial dimensions and angles, making its manufacturing and inspection very difficult. Furthermore, due to the large number of units produced per unit, an economical, efficient, and scientific manufacturing solution directly affects product quality and production flow rate.

[0004] Traditional methods for machining spoilers typically involve turning and milling, but this approach struggles to guarantee the roundness of the parts and is prone to significant deformation during processing. Furthermore, the complex structure of spoilers, encompassing numerous spatial dimensions and angles, makes machining extremely difficult. Especially for some special, complex spatial structures, existing machining methods struggle to meet the requirements for high precision and reliability. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a processing method and positioning clamping device for complex spatial structure spoilers. This method features a simple and economical manufacturing device structure, employs a reasonable processing technology and optimized cutting parameters, and overcomes the difficulties in processing and inspecting the spatial dimensions, angles, and theoretical positions of the parts. It achieves accurate and efficient processing of the complex three-dimensional spatial structure of this part.

[0006] This invention is achieved through the following technical solution:

[0007] A positioning and clamping device includes: a base, a pad, a threaded block, a pressure plate assembly, an adjusting assembly, a pressure plate, and a pin;

[0008] The base is provided with an inner hole positioning stop for positioning in conjunction with the outer circle of the part;

[0009] The pad is mounted on the base to ensure another spatial machining angle for the part;

[0010] The wire alignment block is installed on the base for wire alignment before wire cutting.

[0011] The pressure plate assembly is used to press and fix the parts onto the base;

[0012] The adjustment component is disposed on the base and is used to press against the inner hole surface of the part so that the outer circle of the part fits with the inner hole positioning stop on the base.

[0013] A pressure plate is used to press and fix the blank onto the base;

[0014] Pins are used to angularly position rotated parts during the cutting process.

[0015] Preferably, the pressure plate assembly includes: a pressure plate, an adjusting support, and a stud;

[0016] The stud is fixedly installed on the base, the adjusting support is installed on the stud, one end of the pressure plate is in contact with the adjusting support, and the other end is pressed against the surface of the part.

[0017] Preferably, the adjustment assembly includes a support, an adjusting screw, and a washer. The support is fixed to the base by fasteners and the washer. The adjusting screw is screwed into the support and can press against the inner hole surface of the part so that the outer circle of the part is completely fitted with the inner hole positioning stop on the base.

[0018] Preferably, the base is provided with a preset angle to ensure the spatial angle of the part, the preset angle being 10°, to ensure a spatial angle of 10°±30′ for the part.

[0019] Preferably, the wire alignment block is mounted on the base by positioning pins and fasteners for wire alignment before wire EDM to ensure the 45°±30′ spatial machining angle of the part.

[0020] Preferably, the pad has a 4°1′ tilt angle to ensure a 4°1′ machining angle for the part, and the pad is mounted to the base by a second screw.

[0021] Preferably, it also includes process balls, which are mounted on the base for auxiliary positioning.

[0022] A method for fabricating a complex spatial structure spoiler includes the following steps:

[0023] S1. Make a forging ring blank, wherein the fiber direction of the forging ring blank is longitudinal;

[0024] S2. Rough and finish machining is performed on one end face of the forging ring blank to form a reference plane;

[0025] S3. Using the reference plane for positioning, rough machining is performed on the other end face, outer circle and inner hole of the forging ring blank, and machining allowance is reserved.

[0026] S4. The forging ring blank is precision machined to form an inner surface including at least two inner cylindrical surfaces and conical surfaces with spatial concentricity requirements;

[0027] S5. In the complete ring state, check the dimensions and spatial concentricity of the inner surface processed in step S4;

[0028] S6. The complete ring blank that has passed the inspection in step S5 is clamped on the positioning and clamping device, and the complete ring is cut into multiple individual parts in one clamping using a wire cutting device; the positioning and clamping device is used to ensure the spatial angle of the parts during cutting.

[0029] S7. After finishing the processed parts, the resulting spoiler is processed;

[0030] Preferably, in step S6, the specific process of wire cutting forming includes:

[0031] S61. Fix the positioning and clamping device to the worktable of the wire cutting machine and align it.

[0032] S62. Load the entire ring of billet into the positioning clamping device, use its inner hole positioning stop to position it with the outer circle of the billet, and tighten the inner hole surface of the billet by adjusting the component to make the outer circle of the billet completely fit with the positioning stop, and then use the pressure plate to press the end face of the billet.

[0033] S63. Use a wire alignment block to align the wires;

[0034] S64. Perform wire cutting along the diameter direction, cutting to a depth of 3.5mm without cutting through;

[0035] S65. Loosen the pressure plate, rotate the blank, and use the pin to reposition the angular direction.

[0036] S66. Repeat steps S62 to S65 to cut out several parts and then remove the remaining material.

[0037] Preferably, S61 fixes the positioning and clamping device on the worktable of the wire cutting machine and aligns it with an error of 0.02mm.

[0038] Compared with the prior art, the present invention has the following beneficial technical effects:

[0039] The purpose of this invention is to provide an efficient and economical machining method for processing spoilers with complex spatial structures for aero engines. This invention designs a dedicated machining positioning and clamping device. Through the rational arrangement of components such as a base, pad, threaded block, pressure plate assembly, adjusting assembly, pin, and process ball, it achieves precise positioning and fixation of the part, effectively solving the problem that existing tooling cannot meet the processing requirements of new spoilers, and achieving high-precision and high-efficiency machining. Based on the special structure of the part and the processing characteristics of the part material, this invention selects an integral forged ring as the part blank. First, the outer diameter, inner hole, and end face of the blank are rough-machined. Then, the inner and outer diameters and end faces are finish-machined, and all radial surface dimensions and the total height of the machined part are measured. Next, intermediate inspections are arranged to check the radial dimensions and related technical conditions of the entire ring. Then, wire cutting equipment and a dedicated positioning and clamping device are used to cut out the part shape, ensuring the complex geometric angles, theoretical positions, and thicknesses of the part. Finally, a milling machine, a dedicated clamping device, and a dedicated milling cutter are used to mill the end face, ensuring the apex dimensions and supplementing the machining radius, completing the machining of the part. This machining method features a simple and economical manufacturing device. By employing a reasonable machining process and optimizing cutting parameters, it overcomes the challenges of machining and inspecting the spatial dimensions, angles, and theoretical positions of parts. It achieves accurate and efficient machining of the complex three-dimensional spatial structure of this part.

[0040] Furthermore, the part blank is made of an integral forged ring, which is machined to ensure that the internal dimensions are qualified. Then it is cut to ensure the spatial angle and position for machining and inspection. The part machining is practical, simple and convenient to operate, and fully guarantees the quality of the product and fully meets the design requirements. This method has fewer processes and tooling, and only requires one clamping. It can process about 300 parts in one process. Moreover, it is easy to operate, has high processing efficiency, meets batch requirements, and is economical.

[0041] Furthermore, this invention uses an integral forged ring blank and processes such as turning, precision turning, wire cutting, and milling to achieve accurate and efficient machining of the complex three-dimensional spatial structure of the part. This effectively solves the problem that the traditional turning + milling method cannot guarantee the roundness of the part, and significantly improves the machining quality and service life of the part.

[0042] Furthermore, this invention ensures the spatial dimensional accuracy and theoretical assembly position of the parts through processes such as precision machining of the inner and outer shapes, intermediate inspection, and wire cutting. This overcomes the shortcomings of existing technologies that make it difficult to simultaneously guarantee dimensional accuracy and spatial position accuracy, thereby improving the overall quality and reliability of the product. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the positioning and clamping device.

[0045] Figure 2 Plan view of the positioning and clamping device;

[0046] Figure 3 Assembly diagram showing the relationship between the positioning clamping device and the part:

[0047] Figure 4 This is a schematic diagram of the structure of the part after processing and cutting;

[0048] Figure 5 Here is a schematic diagram of the part blank for the example:

[0049] Figure 6 A simplified diagram of the machining process for the entire ring machine as shown in the example;

[0050] Figure 7 This is a simplified diagram of a wire cutting process for an example.

[0051] Figure 8 Figure A shows the wire cutting forming positioning and clamping device for an embodiment.

[0052] Figure 9 Figure B shows the wire cutting forming positioning clamping device for the embodiment;

[0053] Figure 10 This is a simplified diagram of the milled end face for an example.

[0054] In the diagram: 1. Base; 2. Support; 3. Screw; 4. Adjusting screw; 5. Washer; 6. Craft ball; 7. Pin; 8. Pad; 9. Stud; 10. Part; 11. Adjusting support; 12. Nut; 13. Pressure plate; 14. Threaded block; 15. First screw; 16. Locating pin; 17. Bushing. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0056] like Figures 1 to 3 As shown, a specific embodiment of the positioning and clamping device provided by the present invention is as follows:

[0057] The positioning and clamping device mainly includes a base 1, a pad 8, a threaded block 14, a pressure plate assembly, an adjustment assembly, a pin 7, and a process ball 6.

[0058] The base 1 is the basic main body of the entire device, made of rigid material. It has an inner hole positioning stop on its upper part, which is used to precisely fit with the outer circle of the annular blank to achieve the initial radial positioning of the blank. The body of the base 1 is machined with a preset tilt angle of 10°, which is used to ensure the required spatial angle reference of 10°±30′ for the part.

[0059] The pad 8 is mounted to the upper surface of the base 1 by a second screw 15. The pad 8 itself has a precise tilt angle of 4°1′, which, together with the 10° angle of the base, is used to ensure another 4°1′ spatial machining angle required for the part.

[0060] The wire alignment block 14 is precisely installed at a specific position on the base 1 via a positioning pin 16 and fasteners. The wire alignment block 14 is used to perform wire alignment before wire EDM, providing a precise reference for the wire EDM wire, thereby ensuring the required 45°±30′ spatial machining angle for the part.

[0061] The adjusting assembly is used to apply a tightening force to one side of the inner hole of the billet, so that the outer circle of the billet is completely fitted with the positioning stop of the inner hole of the base 1, eliminating the fitting gap and achieving precise positioning. The adjusting assembly includes a support 2, an adjusting screw 4, and a washer 5. The support 2 is fixedly installed on the base 1 by the screw 3 and the washer 5. The adjusting screw 4 is screwed into the threaded hole of the support 2. By turning the adjusting screw 4, its end can extend forward and press against the inner hole surface of the billet.

[0062] The pressure plate assembly is used to axially press and fix the blank onto the base 1. The pressure plate assembly includes a stud 9, an adjusting support 11, and a pressure plate 13. The lower end of the stud 9 is threadedly fixed to the base 1. The lower end of the adjusting support 11 has an internal thread, through which it is screwed onto the upper end of the stud 9. The height of its top end can be adjusted by rotating the adjusting support 11. One end of the pressure plate 13 overlaps or hinges to the top of the adjusting support 11, while the other end presses against the end face of the blank. By adjusting and locking the height of the adjusting support 11, it can be ensured that the pressure plate 13 is horizontal and firmly presses the part.

[0063] The pin 7 is used for precise angular positioning of the rotated blank during the indexing process. A series of evenly distributed indexing and positioning holes are machined along the circumference of the base 1. When indexing is required, the pin 7 is inserted into the corresponding hole on the blank and the currently aligned positioning hole on the base 1 to achieve angular fixation. A bushing 17 is provided on the pin 7, which can improve the service life of the pin, maintain long-term stable positioning accuracy, and greatly reduce the difficulty and cost of later maintenance.

[0064] The process ball 6 is directly fixedly mounted on the base 1 at a known coordinate position. Its center provides a precise physical reference origin for the wire EDM machine tool, which is used for the machine tool to quickly and automatically set the workpiece coordinate system origin, compensate for minor errors after indexing, ensure the consistency of batch processing, and determine the spatial position of the workpiece in the fixture.

[0065] Working principle:

[0066] First, align and fix the entire special device on the wire EDM machine's worktable. Hoist the precision-machined annular blank onto base 1, ensuring its outer diameter initially aligns with the inner hole's positioning stop. Then, tighten the adjusting screws 4 in the multiple adjusting components to press the blank firmly from the inside, ensuring its outer diameter fully fits the positioning stop. Next, place the pressure plate 13 and adjust and lock the adjusting support 11 in the pressure plate assembly to axially press the blank. Use the process ball 6 for automatic tool setting on the machine and set the machining origin. Use the wire setting block 14 for wire setting. The programmed wire EDM program first cuts at the first station to the pre-reserved connection thickness. After completion, release the pressure plate assembly, rotate the blank by one indexing angle, insert the pin 7 for angular positioning, and press again before proceeding to the next station. This cycle continues until all parts on the entire annular blank have been cut.

[0067] This invention, through specialized device design, transforms the spatial angle requirements of a product into the manufacturing precision of the device, enabling efficient, high-precision, and highly consistent batch processing of complex parts.

[0068] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0069] Example 1: A method and apparatus for efficiently processing spoilers with complex spatial structures:

[0070] The steps are as follows:

[0071] 1. Fabrication of blank forging rings, such as Figure 4

[0072] Based on the part's design dimensions and shape, an integral forged ring blank with an outer diameter of φ800 mm, an inner diameter of φ720 mm, and a height of 70 mm is forged, with the blank's fiber direction being longitudinal.

[0073] 2. Machining reference surfaces, such as Figure 5

[0074] Place the blank forging ring on a vertical CNC lathe, align its alignment point within 0.2 mm, use a pressure plate to hold the outer circle, machine one end face, remove the excess material of 2.5 mm from the surface of the part, and then finish machine to remove 0.5 mm to ensure the flatness and size of the datum surface, providing a datum plane for subsequent machining.

[0075] 3. Machining the end face and inner hole

[0076] Place the part on a vertical CNC lathe, position it by the end face to be machined, press the upper end face with a pressure plate, machine the end face and outer circle, turn the pressure plate, machine the stepped surface and inner hole, and leave a 3mm allowance for finishing the inner hole and end face.

[0077] 4. The interior and exterior shapes are precision machined as follows: Figure 6

[0078] The part is placed on a vertical CNC lathe, and the end face is pressed from the inside out using pressure plates to machine the outer diameter of the part. Then, the pressure plates are reversed, and the end face is pressed from the outside in to machine the inner surface. The two spatial dimensions of the part are designed to match the inner cylindrical surfaces: φ749+0.080 and φ744.5+0.080, and the inner dimensions of the conical surfaces: φ738.5+0.150 and φ743.5+0.150, as well as the concentricity requirement after assembly, ensuring product design requirements. The complete ring machining method effectively solves the difficulty of machining the spatial dimensions of individual parts. Inspection before cutting is convenient and reliable, avoiding the technical challenge of being unable to inspect individual parts after cutting.

[0079] 5. Intermediate Inspection

[0080] This step involves intermediate inspection, which examines the inner cylindrical surfaces of the two spatial dimensions (φ749+0.080, φ744.5+0.080) and the inner conical surfaces (φ738.5+0.150, φ743.5+0.150) under the entire ring, as well as their concentricity after assembly, to ensure that the dimensional characteristics are controlled before cutting.

[0081] 6. Wire cutting forming, such as Figure 7

[0082] This step uses a wire EDM machine, model DK7762; the processing parameters are: current 4A, voltage 2V, pulse 6. A dedicated machining positioning and clamping device is used. Figure 8 and Figure 9 This device is designed to cut parts at 10° and 4°1′ angles, and can cut 300 individual spoiler parts from the entire ring in a single clamping operation, while ensuring the required spatial angle dimensions and theoretical assembly space positions. The processing procedure is as follows:

[0083] First, place the positioning and clamping device on the worktable of the wire EDM equipment and align it within 0.02 mm. Then, mount the part onto the base 1 of the positioning and clamping device. Use the inner hole positioning stop on the base to position the part's outer circle. Use the adjusting screw 4 to press against the inner hole surface, ensuring the part's outer circle is fully fitted with the base's positioning inner hole. Use the pressure plate 13 to press the part surface. Use the wire alignment block 14 to align the wires, and then program the cutting of the part at an angle of 44°38′, cutting through to a thickness of 3.5 mm along the diameter direction. Cut several parts, rotate the part, and use the pin 7 to fix the angle, continuing to cut several more parts. Repeat the operation. After cutting, unload the remaining material to end this complete cycle of machining.

[0084] 7. Mill the end face, such as Figure 10

[0085] Using ordinary milling machines and special fixtures and milling cutters, the machining ensures dimensions of 12.33 0-0.2 and 14.45 0-0.2.

[0086] 8. Fitting

[0087] Use sandpaper to remove the remelted layer and burrs from the parts.

[0088] 9. Finished product inspection

[0089] Inspecting part dimensions

[0090] 10. Chromate anodizing

[0091] The parts are placed in a chromic acid bath for full-surface anodizing, which protects the surface of the parts.

[0092] The blank of this invention uses an integral forged ring, which is machined to ensure that the internal dimensions are qualified. Then it is cut to ensure the spatial angle and position for machining and inspection. The part processing is practical, simple and convenient to operate, and fully guarantees the quality of the product and fully meets the design requirements. This method has fewer processes and tooling, and can process about 300 parts in one process with only one clamping. It is easy to operate, has high processing efficiency, meets batch requirements, and is economical.

[0093] This invention effectively solves the deformation problem during processing by precisely controlling processing parameters and clamping methods, ensuring the overall quality of parts, avoiding quality problems such as processing vibration marks, and improving the appearance quality and service life of parts.

[0094] This invention employs multi-station wire cutting and specialized milling cutters during the processing, achieving efficient cutting and end-face machining of parts, significantly improving production efficiency and product quality.

[0095] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this invention.

[0096] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0097] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. When a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component.

[0098] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0099] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0100] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0101] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A positioning and clamping device, characterized in that, include: Base (1), pad (8), thread block (14), pressure plate assembly, adjustment assembly and pin (7); The base (1) is provided with an inner hole positioning stop for positioning in conjunction with the outer circle of the part; The base (1) is provided with a preset angle for ensuring the spatial angle of the parts. The preset angle is 10°, which is used to ensure the spatial angle of the parts is 10°±30′. The pad (8) is mounted on the base (1), and the pad (8) has an inclination angle of 4°1′ to ensure that the other space machining angle of the part is 4°1′. The pad (8) is mounted to the base (1) by a second screw (15); The wire alignment block (14) is installed on the base (1) for wire alignment operation before wire cutting; The pressure plate assembly is used to press and fix the parts onto the base (1); the pressure plate assembly includes: a pressure plate (13), an adjusting support (11), and a stud (9). The stud (9) is fixedly installed on the base (1), the adjusting support (11) is installed on the stud (9), one end of the pressure plate (13) is in contact with the adjusting support (11), and the other end is pressed against the surface of the part; The adjustment component is disposed on the base (1) and is used to press against the inner hole surface of the part so that the outer circle of the part fits against the inner hole positioning stop on the base (1); The pin (7) is used to position the rotated part angularly during the cutting process.

2. The positioning and clamping device according to claim 1, characterized in that, The adjustment assembly includes a support (2), an adjustment screw (4), and a washer (5). The support (2) is fixed to the base (1) by fasteners and washer (5). The adjustment screw (4) is screwed into the support (2) and can press against the inner hole surface of the part so that the outer circle of the part is completely fitted with the inner hole positioning stop on the base (1).

3. The positioning and clamping device according to claim 1, characterized in that, The wire alignment block (14) is mounted on the base (1) by a positioning pin (16) and fasteners for wire alignment before wire EDM to ensure the 45°±30′ spatial machining angle of the part.

4. The positioning and clamping device according to claim 1, characterized in that, It also includes a process ball (6), which is mounted on the base (1) for auxiliary positioning.

5. A method for processing a complex spatial structure spoiler, based on the processing positioning and clamping device according to any one of claims 1-4, characterized in that, Includes the following steps: S1. Make a forging ring blank, wherein the fiber direction of the forging ring blank is longitudinal; S2. Rough and finish machining is performed on one end face of the forging ring blank to form a reference plane; S3. Using the reference plane for positioning, rough machining is performed on the other end face, outer circle and inner hole of the forging ring blank, and machining allowance is reserved. S4. The forging ring blank is precision machined to form an inner surface including at least two inner cylindrical surfaces and conical surfaces with spatial concentricity requirements; S5. In the complete ring state, check the dimensions and spatial concentricity of the inner surface processed in step S4; S6. The complete ring blank that has passed the inspection in step S5 is clamped on the positioning and clamping device, and the complete ring is cut into multiple individual parts in one clamping using a wire cutting device; the positioning and clamping device is used to ensure the spatial angle of the parts during cutting. S7. After processing the parts, the spoiler is processed.

6. The method for processing a complex spatial structure spoiler according to claim 5, characterized in that, In step S6, the specific process of wire cutting forming includes: S61. Fix the positioning and clamping device to the worktable of the wire cutting machine and align it. S62. Load the whole ring of billet into the positioning clamping device, use its inner hole positioning stop to position with the outer circle of the billet, and tighten the inner hole surface of the billet by adjusting the component to make the outer circle of the billet completely fit with the positioning stop, and then use the pressure plate (13) to press the end face of the billet. S63. Use the wire-aligning block (14) to align the wires; S64. Perform wire cutting along the diameter direction, cutting to a depth of 3.5mm without cutting through; S65. Loosen the pressure plate (13), rotate the blank, and reposition the angle using the pin (7); S66. Repeat steps S62 to S65 to cut out several parts and then remove the remaining material.

7. The method for processing a complex spatial structure spoiler according to claim 6, characterized in that, S61 fixes the positioning and clamping device to the worktable of the wire cutting machine and aligns it with an error of 0.02mm.

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