A processing method of a fan bracket

Abstract

The application discloses a processing method of a fan support, and the fan support has a positioning ring and an outer frame assembly welded on the positioning ring, which are independently processed respectively; the outer frame assembly comprises steel beams surrounding a polygon and positioning seats connected at joint parts of adjacent steel beams; at least two steel beams are connected with the positioning ring; the processing method of the fan support comprises the following steps: S1, a welding jig is designed and manufactured according to the shape and size of the fan support; S2, each part of the fan support is positioned on the welding jig and then welded; S3, the fan support formed by welding is subjected to shaping treatment; S4, the fan support formed by welding is subjected to stress relief heat treatment; and S5, the fan support formed by welding is subjected to surface post-treatment. The application adopts a special welding jig to precisely control the positions of each part of the fan support, ensures that the size tolerance of the parts is strictly controlled, and meets the position degree requirement of the fan support.

Description

Technical Field

[0001] This invention relates to the field of semiconductor manufacturing equipment technology, and more specifically to a method for processing a fan bracket. Background Technology

[0002] In the semiconductor wafer fabrication industry, a type of fan bracket is commonly used on etching production lines. This bracket is constructed by welding rectangular steel, sheet metal, and plates together, requiring high positional accuracy and strict dimensional tolerance control. To ensure the uniqueness and accuracy of each part of the product, current conventional manufacturing methods cannot achieve the required high precision tolerances. Utility model patent CN222010590U discloses a fan bracket, but this patent focuses on improving the stability and lifespan of the fan installation through a triangular structure and vibration dampers, without employing innovative technical solutions regarding the processing precision of the fan bracket. Summary of the Invention

[0003] Existing methods for processing wind turbine supports lack precise positioning control and measures to address welding deformation, which can easily lead to inaccuracies and dimensional deviations in the welded wind turbine supports. To overcome these shortcomings, this invention provides a method for processing wind turbine supports that can precisely position the components to be welded, effectively control welding deformation, and strictly control dimensional tolerances.

[0004] The technical solution of this invention is: a method for processing a wind turbine support, the wind turbine support having independently processed positioning rings and an outer frame assembly welded to the positioning rings, the outer frame assembly including steel beams forming a polygon and positioning seats connected to the joints of adjacent steel beams, at least two steel beams being connected to the positioning rings, and the processing method of this wind turbine support including the following steps: S1. Design and manufacture welding fixtures according to the shape and size of the wind turbine support; S2. After positioning each component of the wind turbine support on the welding fixture, perform welding; S3. Reshape the welded fan bracket; S4. Perform stress-relieving heat treatment on the welded fan bracket; S5. Perform surface post-treatment on the welded fan bracket.

[0005] Preferably, the welding fixture includes a plate body, on which a main limiting groove corresponding to the inner ring positioning ring and an outer frame assembly mounting groove corresponding to the outer frame assembly are provided. The outer frame assembly mounting groove includes a positioning seat mounting groove corresponding to the positioning seat and a limiting block mounting groove corresponding to each of the steel beams. A steel beam limiting block that abuts against the side of the steel beam is installed in the limiting block mounting groove.

[0006] Preferably, a pressure plate is installed on the workpiece to be welded during the welding process in step S.

[0007] As a preferred option, the welding fixture is made of polytetrafluoroethylene (PTFE).

[0008] Preferably, step S3 is performed using a hot press shaping machine.

[0009] Preferably, the stress-relieving heat treatment in step S4 is carried out in a vacuum heat treatment furnace.

[0010] As a preferred method, when performing stress-relieving heat treatment, the vacuum heat treatment furnace is first heated to 350-380°C, then held at that temperature for 2-4 hours, and then allowed to cool naturally.

[0011] Preferably, step S4 includes surface treatment, which is sandblasting.

[0012] Preferably, step S4 also includes surface cleaning, which is ultrasonic cleaning using deionized water.

[0013] Alternatively, step S4 may also include surface cleaning, which may be a combination of ultrasonic cleaning, high-pressure spray cleaning, and anhydrous ethanol rinsing.

[0014] The beneficial effects of this invention are: This invention significantly improves the machining accuracy of wind turbine supports. It employs specialized welding fixtures to precisely control the position of each component of the wind turbine support, ensuring strict control of component dimensional tolerances and meeting the positional accuracy requirements of the wind turbine support.

[0015] This invention effectively controls welding deformation of the wind turbine support frame. A shaping process is included to better ensure the positional accuracy of the wind turbine support frame. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a welding fixture in this invention.

[0017] Figure 2 This is a schematic diagram of a structure after the welding fixture is placed into the steel beam limiting block in this invention.

[0018] Figure 3 This is a schematic diagram of one embodiment of the present invention.

[0019] In the diagram, 1-fan bracket, 2-welding fixture, 3-main limiting groove, 4-positioning seat limiting groove, 5-limiting block mounting groove, 6-steel beam limiting block, 7-pressure plate, 8-anti-rotation boss. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1:

[0022] like Figures 1 to 3As shown, a method for processing a wind turbine bracket is used to process a wind turbine bracket 1 for etching lines. The wind turbine bracket 1 includes a positioning ring, three steel positioning seats, and three steel beams. The three steel beams are of two long and one short length, with the two long steel beams being of equal length. The three steel beams are distributed around the positioning ring, forming an isosceles triangle. The positioning seats have threaded holes, and the two ends of the steel beams have bolt holes. Both long steel beams are welded to the positioning ring. The three positioning seats are located at the three corners of the isosceles triangle formed by the three steel beams. The adjacent ends of adjacent steel beams are fixed to the corresponding positioning seats by bolts, and the positioning seats constitute the joint of adjacent steel beams. The positioning seats and steel beams are connected to form an outer frame assembly. The positioning ring is made of seamless steel pipe bent into shape, and its inner edge has a radially recessed anti-rotation groove.

[0023] The processing method for this wind turbine support includes the following steps: Step S1: Design and manufacture welding fixture 2. This step aims to manufacture a dedicated welding fixture 2 for the wind turbine bracket 1 based on its shape and structure. The main body of the welding fixture 2 is a rectangular plate. The upper surface of the plate has a main limiting groove 3 and six outer frame component mounting grooves. The main limiting groove 3 is an annular groove that matches the shape of the positioning ring. The plate within the area enclosed by the main limiting groove 3 has four pressure plate mounting holes. The inner edge of the main limiting groove 3 has an anti-rotation boss 8. The six outer frame component mounting grooves are further subdivided into three positioning seat limiting grooves 4 and three limiting block mounting grooves 5. The positioning seat limiting grooves 4 are arranged around the main limiting groove 3, corresponding one-to-one with the positions of the three positioning seats, and their dimensions are adapted to the dimensions of the positioning seats. The limiting block mounting slot 5 corresponds one-to-one with the steel beam. Located on the outer side of the middle of the corresponding steel beam, the limiting block mounting slot 5 is used to install the steel beam limiting block 6. The steel beam limiting block 6 also has bolt holes. After being installed in the limiting block mounting slot 5 with bolts, the steel beam limiting block 6 abuts against the side of the steel beam, providing lateral positioning. Of the three positioning seat limiting slots 4, the positioning seat limiting slot 4 corresponding to the positioning seat connecting two long steel beams is connected to the main limiting slot 3, while the other two positioning seat limiting slots 4 are not connected to the main limiting slot 3. Both the positioning seat limiting slot 4 and the limiting block mounting slot 5 have threaded holes at the bottom for installing positioning bolts. The welding fixture 2 is made of polytetrafluoroethylene (PTFE). Polytetrafluoroethylene (PTFE) has the following advantages: 1. Its hardness is much lower than that of ordinary seamless steel pipes and other steel parts, preventing bumps or scratches on the surfaces of the positioning ring and positioning seat during clamping and welding; 2. Its extremely low surface friction coefficient results in less resistance when in contact with the positioning ring and positioning seat, facilitating smooth placement and removal of the fan bracket 1 component and the entire assembly on the welding fixture 2; 3. It has good heat resistance, allowing for long-term use below 260℃ and withstanding localized high temperatures during welding; 4. It has good anti-adhesion properties, preventing weld spatter from easily adhering, facilitating cleaning, and avoiding cross-contamination. Furthermore, PTFE does not contain harmful elements such as silicon and sulfur, and will not pollute the semiconductor process environment.

[0024] Step S2: After the parts to be welded are clamped and positioned on the welding fixture 2, welding is performed. Align the anti-rotation groove with the anti-rotation boss 8, and then embed the positioning ring into the main limiting groove 3 of the welding fixture 2, so that its outer circumference fits against the groove wall of the main limiting groove 3. The anti-rotation boss 8 is also embedded in the anti-rotation groove. Cover the positioning ring with a pressure plate 7, and screw a bolt through the through hole on the pressure plate 7 into the mounting hole of the pressure plate, so that the positioning ring is pressed and fixed in the main limiting groove 3 by the pressure plate 7. This can prevent the positioning ring from shaking or vibrating during the welding process, which would cause changes in phase accuracy, and can also control the amount of deformation, preventing the product from being excessively deformed due to local heating during welding. Embed the three positioning seats into the corresponding positioning seat limiting grooves 4 respectively. The positioning seats and the positioning seat limiting grooves 4 are clearance fit. The positioning seats are adjusted within ±0.2mm in the positioning seat limiting grooves 4 until the bolt holes on the positioning seats are aligned with the threaded holes at the bottom of the positioning seat limiting grooves 4. After alignment, install the positioning bolts and lock them to fix the positioning seats. Similarly, place the steel beam limiting block 6 into the limiting block mounting groove 5, and make minor adjustments to the steel beam limiting block 6 within ±0.2mm until the bolt holes on the steel beam limiting block 6 align with the threaded holes at the bottom of the limiting block mounting groove 5. After alignment, install and tighten the positioning bolts to position the steel beam limiting block 6 within the limiting block mounting groove 5. Place the steel beams, with the outer surfaces of each steel beam abutting against the corresponding steel beam limiting blocks 6 to limit the position and angle of the steel beams, preventing deformation and angular deviation, thereby better controlling the assembly accuracy of the wind turbine support 1. The two ends of the steel beams are located on the top surface of the corresponding positioning seats. Keeping the steel beams abutting against the corresponding steel beam limiting blocks 6, move the steel beams slightly axially until the bolt holes on the steel beams align with the threaded holes on the positioning seats, and then install bolts to fix the steel beams on the positioning seats. At this point, the relative positional relationship of each component of the wind turbine support 1 is determined, and the two long steel beams are in contact with the positioning rings. Subsequently, welding was performed between the positioning ring and the steel beam using manual argon arc welding. The welding current was 80A–100A, the welding speed was 2mm / s–3mm / s, and the shielding gas was 99.99% high-purity argon with a flow rate of 10L / min–15L / min. During welding, care was taken to maintain a stable arc, with the welding torch angled at 70°–80° to the workpiece surface to ensure complete fusion of the weld pool without defects such as porosity or slag inclusions.

[0025] Step S3: Shaping Process. After welding, the fan bracket 1 will exhibit some welding deformation, mainly manifested as increased roundness and flatness errors in the positioning ring. This step aims to correct these deformations. This step requires the use of a hot press shaping machine. After welding, the fan bracket 1 is left to stand on the welding fixture 2 for 12 hours. Then, the pressure plate 7 and steel beam limiting block 6 are removed, and the entire fan bracket 1 is removed from the welding fixture 2 and transferred to the hot press shaping machine. The arc-shaped shaping head of the hot press shaping machine applies radial pressure to the positioning ring to correct its roundness. The arc of the shaping head matches the arc of the positioning ring. Roundness shaping is performed in stages, that is, only the positioning ring is corrected at a time. After multiple corrections, the roundness of the positioning ring meets the requirements. For flatness errors, a flat plate pressing method is used. The arc-shaped forming head is replaced with a flat plate forming head. The fan bracket 1 is placed on a precision flat plate, and shims are placed at the deformed parts. The forming head applies pressure, squeezing the deformed parts of the fan bracket 1 until the flatness meets the requirements. The forming amount is controlled within the range of 0.2mm to 0.5mm to avoid over-forming, which may cause material hardening or cracking. After forming, the roundness and flatness of the positioning ring are checked with vernier calipers and dial indicators. If they are not up to standard, the forming operation is repeated.

[0026] Step S4: Stress Relief Heat Treatment. After shaping, significant residual stress remains inside the fan bracket 1, primarily welding and shaping stress. If these stresses are not eliminated, they will slowly release during subsequent use, causing the position of the fan bracket 1 to change again. This step aims to eliminate these residual stresses. This step requires the use of a vacuum heat treatment furnace. The shaped fan bracket 1 is placed in the vacuum heat treatment furnace, and a vacuum of 1×10⁻⁶ is applied. -6 To prevent high-temperature oxidation, the temperature should be kept below 380°C at a heating rate of 5°C / min and held for 2 hours to ensure full stress release. Then, the furnace should be cooled to below 100°C, and the fan bracket 1 should be removed and allowed to cool naturally to room temperature to avoid generating new thermal stress due to excessively rapid cooling.

[0027] Step S5: Post-surface treatment. This step is further divided into two sub-steps: surface treatment and surface cleaning. After welding, the weld seam may have a small amount of spatter and burrs. After stress-relief heat treatment, a thin oxide scale will form on the surface of the fan bracket 1. The surface treatment sub-step aims to eliminate these surface defects to obtain a homogeneous surface state while simplifying the process. In this embodiment, the surface treatment method is sandblasting, using 100-mesh glass microspheres as the sandblasting medium. The sandblasting pressure is 0.4MPa, the sandblasting distance is 150mm to 200mm, and the sandblasting angle is 45° to 60°. The spray gun is moved evenly during sandblasting to avoid excessive local sandblasting that would result in excessive surface roughness. Sandblasting can effectively remove oxide scale and minor burrs, while forming a uniform matte surface, which is beneficial for subsequent cleaning. After sandblasting, compressed air is used to blow away the residual glass microspheres and dust on the surface, and the surface cleaning sub-step is then carried out. The step-by-step cleaning process aims to thoroughly remove particulate contaminants such as glass microspheres, dust, and oil stains that are fatally hazardous to etching equipment and still adhere to the surface of the fan bracket 1. In this embodiment, the surface cleaning method is ultrasonic cleaning. The fan bracket 1 is placed in an ultrasonic cleaning tank, and deionized water is used as the cleaning medium. The ultrasonic frequency is set at 40kHz, the cleaning temperature is 50℃, and the cleaning time is 15 minutes. After cleaning, the fan bracket 1 is placed in a cleanroom oven to dry.

[0028] Example 2:

[0029] A method for processing a wind turbine bracket is disclosed, used to process a wind turbine bracket 1 for etching lines. Unlike Embodiment 1, in this embodiment, the wind turbine bracket 1 includes a positioning ring, four steel positioning seats, and four steel beams. Two of the four steel beams are long, and the two long steel beams are of equal length. The four steel beams are distributed around the positioning ring, forming an isosceles trapezoid. The positioning seats have threaded holes, and the two ends of the steel beams have bolt holes. Both long steel beams are welded to the positioning ring. The four positioning seats are located at the four corners of the isosceles trapezoid formed by the four steel beams. The adjacent ends of adjacent steel beams are fixed to the corresponding positioning seats by bolts, and the positioning seats constitute the joint of adjacent steel beams. The positioning seats and steel beams, when connected, form an outer frame assembly. The positioning ring is made of seamless steel pipe bent into shape, and its inner edge has a radially recessed anti-rotation groove.

[0030] The processing method for this wind turbine support includes the following steps: Step S1: Design and manufacture welding fixture 2. This step aims to manufacture a dedicated welding fixture 2 for the wind turbine bracket 1 based on its shape and structure. The main body of the welding fixture 2 is a rectangular plate. The upper surface of the plate has a main limiting groove 3 and eight outer frame component mounting grooves. The main limiting groove 3 is an annular groove that matches the shape of the positioning ring. The plate within the area enclosed by the main limiting groove 3 has four pressure plate mounting holes. The inner edge of the main limiting groove 3 has an anti-rotation boss 8. The eight outer frame component mounting grooves are further subdivided into four positioning seat limiting grooves 4 and four limiting block mounting grooves 5. The positioning seat limiting grooves 4 are arranged around the main limiting groove 3, corresponding one-to-one with the positions of the four positioning seats, and their dimensions are adapted to the dimensions of the positioning seats. The limiting block mounting slots 5 correspond one-to-one with the steel beams. Located on the outer side of the middle of the corresponding steel beam, each slot is used to install a steel beam limiting block 6. The steel beam limiting block 6 also has bolt holes. After being bolted into the limiting block mounting slots 5, the steel beam limiting block 6 abuts against the side of the steel beam, providing lateral positioning. Of the four positioning seat limiting slots 4, the positioning seat limiting slot 4 corresponding to the positioning seat connecting two long steel beams is connected to the main limiting slot 3, while the other two positioning seat limiting slots 4 are not connected to the main limiting slot 3. Both the positioning seat limiting slots 4 and the limiting block mounting slots 5 have threaded holes at the bottom for installing positioning bolts. Unlike Embodiment 1, the welding fixture 2 in this embodiment is made of polyetheretherketone (PEEK). Compared to polytetrafluoroethylene (PTFE), PEEK has higher heat resistance and better mechanical strength, making it suitable for use in applications with high welding heat input.

[0031] Step S2: After the parts to be welded are clamped and positioned on the welding fixture 2, welding is performed. Align the anti-rotation groove with the anti-rotation boss 8, and then embed the positioning ring into the main limiting groove 3 of the welding fixture 2, so that its outer circumference fits against the groove wall of the main limiting groove 3. The anti-rotation boss 8 is also embedded in the anti-rotation groove. Cover the positioning ring with a pressure plate 7, and screw a bolt through the through hole on the pressure plate 7 into the mounting hole of the pressure plate, so that the positioning ring is pressed and fixed in the main limiting groove 3 by the pressure plate 7. This can prevent the positioning ring from shaking or vibrating during the welding process, which would cause changes in phase accuracy, and can also control the amount of deformation, preventing the product from being excessively deformed due to local heating during welding. Embed the four positioning seats into the corresponding positioning seat limiting grooves 4 respectively. The positioning seats and the positioning seat limiting grooves 4 are clearance fit. The positioning seats are adjusted within ±0.2mm in the positioning seat limiting grooves 4 until the bolt holes on the positioning seats are aligned with the threaded holes at the bottom of the positioning seat limiting grooves 4. After alignment, install the positioning bolts and lock them to fix the positioning seats. Similarly, place the steel beam limiting block 6 into the limiting block mounting groove 5, and make minor adjustments to the steel beam limiting block 6 within ±0.2mm until the bolt holes on the steel beam limiting block 6 align with the threaded holes at the bottom of the limiting block mounting groove 5. After alignment, install and tighten the positioning bolts to position the steel beam limiting block 6 within the limiting block mounting groove 5. Place the steel beams, with the outer surfaces of each steel beam abutting against the corresponding steel beam limiting blocks 6 to limit the position and angle of the steel beams, preventing deformation and angular deviation, thereby better controlling the assembly accuracy of the wind turbine support 1. The two ends of the steel beams are located on the top surface of the corresponding positioning seats. Keeping the steel beams abutting against the corresponding steel beam limiting blocks 6, move the steel beams slightly axially until the bolt holes on the steel beams align with the threaded holes on the positioning seats, and then install bolts to fix the steel beams on the positioning seats. At this point, the relative positional relationship of each component of the wind turbine support 1 is determined, and the two long steel beams are in contact with the positioning rings. Subsequently, welding was performed between the positioning ring and the steel beam using manual argon arc welding. The welding current was 80A–100A, the welding speed was 2mm / s–3mm / s, and the shielding gas was 99.99% high-purity argon with a flow rate of 10L / min–15L / min. During welding, care was taken to maintain a stable arc, with the welding torch angled at 70°–80° to the workpiece surface to ensure complete fusion of the weld pool without defects such as porosity or slag inclusions.

[0032] Step S3: Shaping Process. After welding, the fan bracket 1 will exhibit some welding deformation, mainly manifested as increased roundness and flatness errors in the positioning ring. This step aims to correct these deformations. This step requires the use of a hot press shaping machine. After welding, the fan bracket 1 is left to stand on the welding fixture 2 for 12 hours. Then, the pressure plate 7 and steel beam limiting block 6 are removed, and the entire fan bracket 1 is removed from the welding fixture 2 and transferred to the hot press shaping machine. The arc-shaped shaping head of the hot press shaping machine applies radial pressure to the positioning ring to correct its roundness. The arc of the shaping head matches the arc of the positioning ring. Roundness shaping is performed in stages, that is, only the positioning ring is corrected at a time. After multiple corrections, the roundness of the positioning ring meets the requirements. For flatness errors, a flat plate pressing method is used. The arc-shaped forming head is replaced with a flat plate forming head. The fan bracket 1 is placed on a precision flat plate, and shims are placed at the deformed parts. The forming head applies pressure, squeezing the deformed parts of the fan bracket 1 until the flatness meets the requirements. The forming amount is controlled within the range of 0.2mm to 0.5mm to avoid over-forming, which may cause material hardening or cracking. After forming, the roundness and flatness of the positioning ring are checked with vernier calipers and dial indicators. If they are not up to standard, the forming operation is repeated.

[0033] Step S4: Stress Relief Heat Treatment. After shaping, significant residual stress remains inside the fan bracket 1, primarily welding and shaping stress. If these stresses are not eliminated, they will slowly release during subsequent use, causing the position of the fan bracket 1 to change again. This step aims to eliminate these residual stresses. This step requires the use of a vacuum heat treatment furnace. The shaped fan bracket 1 is placed in the vacuum heat treatment furnace, and a vacuum of 1×10⁻⁶ is applied. -6 To prevent high-temperature oxidation, the temperature is kept below 350°C at a heating rate of 5°C / min and held for 4 hours to ensure full stress release. Then, the furnace is cooled to below 100°C, and the fan bracket 1 is removed and allowed to cool naturally to room temperature to avoid generating new thermal stress due to excessively rapid cooling.

[0034] Step S5: Post-surface treatment. This step is further divided into two sub-steps: surface treatment and surface cleaning. After welding, the weld seam may have a small amount of spatter and burrs. After stress-relief heat treatment, a thin oxide scale will form on the surface of the fan bracket 1. The surface treatment sub-step aims to eliminate these surface defects to obtain a homogeneous surface state while simplifying the process. In this embodiment, the surface treatment method is sandblasting, using 100-mesh glass microspheres as the sandblasting medium. The sandblasting pressure is 0.4MPa, the sandblasting distance is 150mm to 200mm, and the sandblasting angle is 45° to 60°. The spray gun is moved evenly during sandblasting to avoid excessive local sandblasting that would result in excessive surface roughness. Sandblasting can effectively remove oxide scale and minor burrs, while forming a uniform matte surface, which is beneficial for subsequent cleaning. After sandblasting, compressed air is used to blow away the residual glass microspheres and dust on the surface, and the surface cleaning sub-step is then carried out. The step-by-step cleaning process aims to thoroughly remove particulate contaminants such as glass microspheres, dust, and oil stains that are fatally hazardous to etching equipment and still adhere to the surface of the fan bracket 1. In this embodiment, the surface cleaning method is ultrasonic cleaning. The fan bracket 1 is placed in an ultrasonic cleaning tank, and the cleaning medium is deionized water. The ultrasonic frequency is set at 40kHz, the cleaning temperature is 50℃, and the cleaning time is 15 minutes. Unlike Embodiment 1, in this embodiment, secondary and tertiary cleaning are performed after ultrasonic cleaning. The secondary cleaning uses high-pressure spray cleaning. Specifically, after ultrasonic cleaning, the fan bracket 1 is rinsed with deionized water under high pressure at a pressure of 5MPa for 3 minutes to remove the tiny particles attached to the surface. The tertiary cleaning uses anhydrous ethanol rinsing. The fan bracket 1 after secondary cleaning is immersed in anhydrous ethanol for 2 minutes to remove residual moisture and organic contaminants. After cleaning, the fan bracket 1 is placed in a clean oven to dry.

Claims

1. A method for processing a wind turbine support, wherein the wind turbine support (1) has independently processed positioning rings and an outer frame assembly welded to the positioning rings, the outer frame assembly including steel beams forming a polygon and positioning seats connected to the joints of adjacent steel beams, at least two steel beams being connected to the positioning rings, characterized in that, Includes the following steps: S1. Design and manufacture welding fixture (2) according to the shape and size of the fan bracket (1); S2. After positioning each component of the fan bracket (1) on the welding fixture (2), perform welding; S3. The welded fan bracket (1) is shaped; S4. Perform stress-relieving heat treatment on the welded fan bracket (1); S5. Perform surface post-treatment on the welded fan bracket (1).

2. The processing method of the wind turbine support according to claim 1, characterized in that, The welding fixture (2) includes a plate body, on which a main limiting groove (3) corresponding to the positioning ring and an outer frame assembly mounting groove corresponding to the outer frame assembly are provided. The outer frame assembly mounting groove includes a positioning seat mounting groove (4) corresponding to the positioning seat and a limiting block mounting groove (5) corresponding to the steel beam. A steel beam limiting block (6) that abuts against the side of the steel beam is installed in the limiting block mounting groove (5).

3. The processing method of the wind turbine support according to claim 1, characterized in that, In step S2, a pressure plate (7) is installed on the workpiece to be welded.

4. The processing method of the wind turbine support according to claim 1, characterized in that, The material of the welding fixture (2) is polytetrafluoroethylene.

5. The processing method of the wind turbine support according to claim 1, characterized in that, Step S3 is performed using a hot press shaping machine.

6. The processing method of the wind turbine support according to claim 1, characterized in that, In step S4, the stress-relieving heat treatment is carried out in a vacuum heat treatment furnace.

7. The processing method of the wind turbine support according to claim 6, characterized in that, When performing stress-relief heat treatment, first heat the vacuum heat treatment furnace to 350-380℃, then hold it at that temperature for 2-4 hours, and then let it cool naturally.

8. The method for processing a wind turbine support according to any one of claims 1 to 7, characterized in that, Step S4 includes surface treatment, which is sandblasting.

9. A method for processing a wind turbine support according to any one of claims 1 to 7, characterized in that, Step S4 also includes surface cleaning, which is performed by ultrasonic cleaning using deionized water.

10. The processing method of the wind turbine support according to claim 8, characterized in that, Step S4 also includes surface cleaning, which is a composite cleaning process consisting of ultrasonic cleaning, high-pressure spray cleaning, and anhydrous ethanol rinsing.

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