A large wind turbine drive housing processing tooling

Abstract

This utility model discloses a large wind turbine drive housing processing fixture, relating to the field of processing fixture technology. It includes a base, which is V-shaped and comprises several inclined portions and mounting portions arranged opposite each other. The mounting portions are located on the top surface of the base, and several sets of first mounting holes are provided on the mounting portions and inclined portions. A mounting frame is detachably mounted on the mounting portions. Several clamping components are provided on the mounting sides of the base and mounting frame, and these clamping components are on the same plane. Several pressure plates are provided at the top of the mounting frame. This allows for the clamping of drive housings of various sizes, improving the versatility of the fixture and adapting to the processing needs of drive housings of different specifications. Simultaneously, this fixture enables precise and effective positioning, ensuring the positional accuracy of the drive housing during processing.

Description

Technical Field

[0001] This utility model relates to the field of machining tooling technology, and in particular to a machining tooling for a large wind turbine drive housing. Background Technology

[0002] During the machining of wind turbine drive housings, clamping and positioning are required. The workpieces are irregularly shaped, with inner and outer circles of varying diameters, and the outer circle is relatively large. Existing machining fixtures cannot achieve precise and effective positioning, leading to a high product defect rate and increased rework costs. Furthermore, wind turbine drive housings come in many types and vary significantly in size; existing machining fixtures are insufficient to meet the design requirements of various wind turbine drive housings, resulting in poor versatility.

[0003] Chinese Patent Publication No. CN219521289U, Publication Date: December 26, 2022, discloses a Chinese patent entitled "A Processing Fixture for a Planetary Gear Carrier of a Wind Turbine Generator." The fixture features a V-shaped support block with a clamping mechanism for pressing the planetary gear carrier. The V-shaped support block is mounted on a working base plate via a traction gearbox, and a drive box is also mounted on the working base plate. The drive box is connected to the traction gearbox via a transmission shaft. Two parallel racks are vertically arranged at both ends of the V-shaped fixed pressure plate. The ends of the racks pass through the V-shaped support block and engage with a sector gear inside the traction gearbox. The sector gear is mounted on the transmission shaft. A rubber layer is provided on the clamping surface of the V-shaped fixed pressure plate. This processing fixture is essentially used for machining and positioning cylindrical workpieces with outer and inner diameters of different sizes, but it can only achieve positioning for workpieces of one size, resulting in poor versatility. Utility Model Content

[0004] This utility model discloses a large wind turbine drive housing processing fixture. By setting a base and mounting bracket, it can clamp drive housings of various sizes, improve versatility, and achieve precise and effective positioning.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a large wind turbine drive housing processing fixture, including a base, the base being V-shaped, including several inclined portions and mounting portions arranged opposite to each other, the mounting portions being disposed on the top surface of the base, and several sets of first mounting holes being provided on the mounting portions and the inclined portions; a mounting frame is detachably mounted on the mounting portions, and several clamping components are provided on the mounting sides of the base and the mounting frame, the several clamping components being on the same plane, and several pressure plates being provided at the top of the mounting frame.

[0006] Preferably, the mounting bracket has detachable support columns on its inner side, with several support columns arranged opposite each other on the same horizontal plane. The base includes two oppositely arranged inclined parts and two mounting parts, symmetrically arranged. Three rows of first mounting holes are provided in the mounting parts, and several second mounting holes penetrate the bottom of the mounting bracket. The first mounting holes are used to mate with the second mounting holes to fix the mounting bracket. Several clamping components are grouped in pairs, with different clamping components in the same group on the same horizontal plane. Two clamping components are provided on the base, and two clamping components are provided at the top of the mounting bracket. The support columns on the mounting bracket can be selected with different lengths according to the size of the wind turbine drive housing, providing auxiliary fixation to the inner circle of the wind turbine drive housing. This allows the tooling to adapt to wind turbine drive housings of different sizes, further improving the tooling's versatility and expanding its application range. The horizontal arrangement of the support columns on the mounting bracket makes the wind turbine drive housing more stable during processing, reducing displacement or deformation caused by processing vibration, and improving processing accuracy and product quality.

[0007] Preferably, the base has a mounting beam between several inclined sections at its bottom end, and the mounting beam has several third mounting holes. The mounting bracket can be selectively installed on different groups of first mounting holes according to different sizes of wind turbine drive housings. The clamping components on the mounting bracket clamp the outer circle of the wind turbine drive housing. The distance between the clamping components in the same group varies depending on the position of the mounting bracket, so as to achieve clamping of the outer circle of wind turbine drive housings of different sizes. This allows the tooling to adapt to more sizes of wind turbine drive housings, further enhancing its versatility, reducing the frequency of tooling replacement due to changes in drive housing size, and lowering production costs.

[0008] Preferably, a support column is detachably mounted on the mounting beam. This support column is vertically positioned and installed within a third mounting hole. Several support columns abut against the inner circle of the wind turbine drive housing, providing auxiliary positioning for the housing. Working in conjunction with the clamping assembly, this further improves the positioning accuracy of the wind turbine drive housing during processing, ensuring accurate placement, reducing processing errors, and improving product quality. The detachable installation of the support columns within the third mounting hole of the mounting beam allows for quick adjustment of the position or number of support columns according to the size and processing requirements of the wind turbine drive housing, improving the ease of tooling installation and operational flexibility.

[0009] Preferably, a support block is detachably mounted on the inclined portion. Several support blocks arranged opposite each other on the same horizontal plane provide uniform support force to the wind turbine drive housing, ensuring its stability during processing. The inclined arrangement of the support blocks allows for selective mounting on different first mounting holes depending on the size of the wind turbine drive housing. This further improves the tooling's adaptability to wind turbine drive housings of different sizes, enabling it to better meet diverse processing needs.

[0010] Preferably, the support block is installed on the first mounting holes, and several first mounting holes are evenly distributed. The support block is provided with a fourth mounting hole, which cooperates with the first mounting holes to install the support block. The screw fixing method is firm and reliable, effectively preventing the support block from loosening or falling off during processing, ensuring the normal use of the tooling.

[0011] Preferably, the clamping assembly includes a clamping block positioned towards the center, which is mounted on a mounting post. The bottom end of the mounting post is fixed to a mounting base, which is vertically fixed to the top mounting side of the mounting frame. The end of the clamping block facing the wind turbine drive housing is V-shaped and contacts the outer surface of the wind turbine drive housing to clamp it. Four clamping blocks are evenly distributed. This structure allows the clamping force to be evenly distributed on the outer surface of the wind turbine drive housing, avoiding local deformation or damage caused by uneven clamping force, and improving processing quality and product reliability.

[0012] Preferably, the clamping assembly includes clamping blocks, which are inclined towards the center. There are four clamping blocks in total, with the bottom clamping blocks inclined upwards and the top clamping blocks inclined downwards, abutting against the outer circumferential surface of the wind turbine drive housing. The clamping blocks can apply clamping force to the outer circumference of the wind turbine drive housing from different directions, ensuring a firm clamping and preventing displacement or loosening of the wind turbine drive housing during processing.

[0013] Preferably, the plurality of pressure plates are divided into a first pressure plate and a second pressure plate, and the bottom end of the first pressure plate is provided with an arc-shaped portion. The arc-shaped portion contacts the top end of the inner circle of the wind turbine drive housing. The contact between the arc-shaped portion at the bottom end of the first pressure plate and the top end of the inner circle of the wind turbine drive housing can reliably fix the top end of the inner circle of the wind turbine drive housing, preventing it from shaking or shifting during processing and improving processing stability.

[0014] Preferably, the bottom end of the second pressure plate is provided with a support column, and several support columns are on the same plane. The base is provided with an auxiliary support column on the mounting side bottom end to assist in supporting the outer circular bottom end of the wind turbine drive housing.

[0015] Beneficial Effects: This utility model, by setting a base and mounting bracket, can clamp drive housings of various sizes, thus significantly improving the versatility of the tooling. It can adapt to the processing needs of drive housings of different specifications, reducing the need for frequent tooling adjustments due to varying drive housing sizes and improving processing efficiency. Simultaneously, this tooling enables precise and effective positioning, ensuring the positional accuracy of the drive housing during processing, thereby improving processing quality, reducing processing errors, and guaranteeing product reliability and consistency. This provides a strong guarantee for the efficient and high-quality processing of large wind turbine drive housings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an assembly diagram of the present invention.

[0018] Figure 3 This is an assembly diagram of the present invention.

[0019] Reference numerals: 1: Base; 2: Inclined portion; 3: Mounting portion; 4: First mounting hole; 5: Mounting bracket; 6: Second mounting hole; 7: Support column; 8: Mounting beam; 9: Third mounting hole; 10: Support block; 11: Clamping assembly; 12: Clamping block; 13: Mounting column; 14: Mounting seat; 15: Pressing block; 16: First pressure plate; 17: Second pressure plate; 18: Arc-shaped portion; 19: Auxiliary support column; 20: Wind turbine drive housing. Detailed Implementation

[0020] The large wind turbine drive housing processing fixture disclosed in this utility model achieves precise clamping and stable positioning of drive housings of different sizes through the modular design of the base 1 and the mounting frame 5, the adjustable support column 7 and the cooperation of multiple clamping components 11, effectively solving the problems of poor versatility and frequent replacement of traditional fixtures.

[0021] exist Figure 1 In the illustrated embodiment, the machining fixture uses a V-shaped base 1 as its basic support structure. The base 1 includes several inclined portions 2 and mounting portions 3 arranged opposite each other. The inclined portions 2 are symmetrically distributed to form a V-shaped support surface, which can provide stable bottom support for the drive housing and adapt to the outer diameter of drive housings of different diameters by adjusting the inclination angle, thus avoiding instability caused by differences in drive housing size. The mounting portions 3 are set on the top platform of the base 1. Both the mounting portions 3 and the inclined portions 2 are provided with several sets of first mounting holes 4. These mounting holes are arranged in a matrix, providing multiple positioning points for the detachable installation of the mounting frame 5. This allows the mounting frame 5 to be flexibly adjusted according to the size of the drive housing, adapting to workpieces of different specifications without replacing the entire base 1.

[0022] exist Figure 1 and Figure 2In the preferred embodiment shown, the mounting bracket 5 is detachably mounted on the mounting part 3. Its bottom end has several second mounting holes 6. Bolts pass through the second mounting holes 6 and engage with the first mounting holes 4 on the mounting part 3 to fix the mounting bracket 5 to the base 1. A horizontally arranged support column 7 is detachably mounted on the inner side of the mounting bracket 5. The length of the support column 7 can be flexibly selected according to the inner diameter of the drive housing: when machining a larger drive housing, a shorter support column 7 is used to ensure a tight fit with the inner diameter of the drive housing; when machining a smaller drive housing, a longer support column 7 is used to ensure that the support column 7 provides effective support without being too short and causing deformation of the inner diameter of the drive housing. The auxiliary fixation of the inner diameter of the drive housing by the horizontal support column 7, combined with the clamping assembly 11 at the top of the mounting bracket 5 clamping the outer diameter of the drive housing, forms a double-fixing structure of "inner support and outer clamping," which significantly improves the stability of the drive housing during machining, reduces displacement or deformation caused by machining vibration, and lays the foundation for improving machining accuracy.

[0023] exist Figure 1 and Figure 2 In the preferred embodiment shown, the layout design of the clamping components 11 further enhances the versatility and stability of the clamping. Several clamping components 11 are grouped in pairs, with different clamping components 11 within the same group positioned on the same horizontal plane, ensuring a uniform distribution of clamping force on the drive housing and preventing drive housing displacement due to uneven force. The base 1 has two clamping components 11, located on the outer side of the inclined portion 2, primarily providing auxiliary clamping for the lower outer circle of the drive housing; the mounting frame 5 has two clamping components 11, located at the top of the mounting frame 5, directly acting on the upper outer circle of the drive housing. When the mounting frame 5 adjusts its position through the first and second mounting holes 6, the relative distance between the clamping components 11 on the mounting frame 5 and the clamping components 11 on the base 1 changes accordingly: when the two mounting frames 5 on the mounting portion 3 simultaneously move outwards, the distance between the clamping components 11 increases, accommodating larger drive housings; when the two mounting frames 5 on the mounting portion 3 simultaneously move inwards, the distance between the clamping components 11 decreases, accommodating smaller drive housings. This adjustable clamping gap design allows the tooling to cover a wider range of drive housing sizes, reducing the frequency of tooling changes due to changes in drive housing size, and significantly reducing production costs and changeover time.

[0024] exist Figure 1 , Figure 2 and Figure 3In the preferred embodiment shown, a mounting beam 8 is provided at the bottom end of the base 1 between several inclined portions 2. The mounting beam 8 is longitudinally arranged in the V-shaped groove of the base 1, and its surface is provided with several third mounting holes 7. The third mounting holes 7 are evenly distributed along the length of the mounting beam 8 and are used to install vertically arranged support columns 7. The vertical support columns 7 are detachably installed in the third mounting holes 7 and fixed by bolts. Their top ends can abut against the bottom of the inner circle of the drive housing, forming bottom support for the drive housing. The vertical support columns 7 and the horizontal support columns 7 on the mounting frame 5 form a three-dimensional support network: the horizontal support columns 7 provide lateral support from the side of the inner circle of the drive housing, and the vertical support columns 7 provide longitudinal support from the bottom. The combination of the two can not only further improve the positioning accuracy of the drive housing, but also distribute the weight load of the drive housing, avoiding sagging deformation of the drive housing during processing due to its own weight. At the same time, the position of the vertical support columns 7 can be flexibly adjusted through the third mounting holes 7. According to the support requirements of the inner circle of the drive housing, multiple vertical support columns 7 can be installed at different positions, or a single support column 7 can be installed only at key stress points, improving the operational flexibility and adaptability of the tooling.

[0025] In actual processing, the tooling adjustment and clamping process is efficient and precise. Taking the processing of a wind turbine drive housing 20 of a certain specification as an example: First, according to the outer diameter of the drive housing, the fixed position of the mounting bracket 5 on the mounting part 3 is selected. The mounting bracket 5 is fixed on the base 1 by matching the second mounting hole 6 with the corresponding first mounting hole 4. Next, according to the inner diameter of the drive housing, the horizontal support column 7 on the inner side of the mounting bracket 5 is replaced to ensure that the length of the support column 7 can be tightly abutted against the inner diameter. Then, the vertical support column 7 is installed in the third mounting hole 7 of the mounting beam 8, and its position and height are adjusted so that its top end contacts the bottom of the inner diameter of the drive housing. Finally, the clamping assembly 11 is activated. The clamping assembly 11 on the base 1 assists in clamping from the lower outer diameter, and the clamping assembly 11 on the mounting bracket 5 applies clamping force from the upper outer diameter. The horizontal and vertical support columns 7 provide support from the inner diameter, forming a stable clamping structure of "external clamping and internal support, upper and lower coordination".

[0026] When it is necessary to replace the drive housing of a different size, simply loosen the fixing bolts of the mounting bracket 5, adjust the mounting bracket 5 to the position corresponding to the first mounting hole 4 and fix it again; replace the horizontal support column 7 of the appropriate length; adjust the number and position of the vertical support column 7; and finally adjust the clamping distance of the clamping assembly 11. The whole process does not require disassembling the base 1 or replacing the core components, making the operation convenient and greatly shortening the production changeover time.

[0027] This invention constructs a highly versatile, precise, and stable machining fixture for large wind turbine drive housings through multiple sets of mounting holes in the V-shaped base 1, the detachable and adjustable mounting bracket 5, the adaptable length and position of the horizontal and vertical support columns 7, and the grouped layout of the clamping components 11. Its "internal support and external clamping with adjustable spacing" design can accommodate drive housings of various sizes, reducing the frequency of fixture changes, and ensures stability during processing through multiple fixing structures. This effectively improves processing accuracy and production efficiency, providing a reliable guarantee for the mass production of large wind turbine drive housings 20.

[0028] exist Figure 1 In the preferred embodiment shown, a support block 10 is detachably mounted on the inclined portion 2. The support block 10 is designed to be inclined, and its inclination angle matches the angle of the inclined portion 2 of the base 1, ensuring that it can form a close fit with the outer circle of the drive housing after installation. Several support blocks 10 arranged opposite each other always remain on the same horizontal plane. This horizontally aligned layout provides uniform support force to the drive housing, avoiding tilting of the drive housing due to differences in support point height, and ensuring its stability during processing. The support block 10 is installed by a screw-fixing method, with its own fourth mounting hole engaging with the first mounting hole 4 on the inclined portion 2. The bolt passes through the fourth mounting hole and is tightened into the first mounting hole 4, ensuring both the firmness of the support block 10 installation and facilitating flexible adjustment of its position according to the size of the drive housing. When processing drive housings of different sizes, the operator can disassemble the support block 10 and reinstall it on different sets of the first mounting holes 4: for larger drive housings, the support block 10 is moved towards the mounting holes on the outer side of the inclined portion 2 to increase the support spacing; for smaller drive housings, it is adjusted towards the mounting holes on the inner side to decrease the support spacing. This adjustable design further broadens the applicability of the tooling, enabling it to better meet diverse processing needs without requiring custom support structures for each size.

[0029] exist Figure 2 In the preferred embodiment shown, the clamping assembly 11 is designed to achieve multi-directional uniform clamping of the outer circle of the drive housing. The clamping assembly 11 includes a clamping block 12 oriented towards the center. The clamping block 12 is mounted on the top of the mounting post 13, the bottom of which is fixed to the mounting base 14. The mounting base 14 is vertically fixed to the mounting side of the top of the mounting frame 5, forming a stable clamping force transmission path. The end of the clamping block 12 facing the drive housing is V-shaped, with the V-shaped opening closely fitting the outer surface of the drive housing. This increases the contact area and, through the self-centering characteristic of the V-shape, guides the drive housing to automatically center, ensuring that the center of the drive housing is aligned with the machining datum during clamping. Four clamping blocks 12 are provided, symmetrically distributed on both sides of the mounting frame 5. This symmetrical layout ensures that the clamping force is evenly distributed at four points on the outer circle of the drive housing, preventing deformation or damage to the drive housing due to excessive local force. This is particularly suitable for thin-walled, easily deformable workpieces such as large drive housings, effectively protecting the workpiece's precision.

[0030] exist Figure 1 and Figure 2 In the preferred embodiment shown, the clamping assembly 11 further includes clamping blocks 15, which work in conjunction with the clamping blocks 12 to apply clamping force to the drive housing from different directions. There are four clamping blocks 15 in total, with the two bottom clamping blocks 15 inclined upwards and the two top clamping blocks 15 inclined downwards. All clamping blocks 15 abut against the outer circumferential surface of the drive housing. This inclined arrangement creates a "top-and-bottom wrapping" clamping force: the bottom clamping blocks 15 press upwards from below to prevent the drive housing from shifting downwards due to vibration during processing; the top clamping blocks 15 press downwards from above to limit the upward movement of the drive housing; combined with the horizontal clamping force of the clamping blocks 12, a three-dimensional clamping system is formed, ensuring that the drive housing does not loosen or shift in any direction during processing, significantly improving positioning stability.

[0031] exist Figure 1 and Figure 3 In the preferred embodiment shown, the mounting bracket 5 has several pressure plates at its top, divided into a first pressure plate 16 and a second pressure plate 17. These two types of pressure plates have clearly defined functions, providing fixed support from different parts of the inner circle of the drive housing. The first pressure plate 16 has an arc-shaped portion 18 at its bottom end. The curvature of the arc-shaped portion 18 matches the curvature of the top end of the inner circle of the drive housing. When the first pressure plate 16 is pressed down, the arc-shaped portion 18 can make close contact with the top end of the inner circle of the drive housing, avoiding scratches to the inner wall of the drive housing from rigid contact, and transmitting stable pressure through the contact of the arc-shaped surfaces, preventing the top end of the inner circle of the drive housing from shaking during processing vibrations. When installing the first pressure plate 16, it is preferable that the arc-shaped portion 18 is pressed towards 120N. The second pressure plate 17 has support columns 7 at its bottom end, with several support columns 7 kept on the same plane. In this embodiment, four support columns 7 are preferably provided, respectively located on the top, bottom, left, and right sides of the wind turbine drive housing 20. The top of the support column 7 abuts against the side of the inner circle of the drive housing, providing auxiliary fixation to the inner circle of the drive housing from the horizontal direction. Together with the top pressing of the first pressure plate 16, it forms a double fixation of "top pressure + side support" in the inner circle direction, which further enhances the structural stability inside the drive housing and reduces the processing error caused by the deformation of the inner circle during the processing.

[0032] exist Figure 1In the preferred embodiment shown, the base 1 is further provided with an auxiliary support column 19 at the bottom of the mounting side. The auxiliary support column 19 is vertically upward, with its top end abutting against the bottom end of the outer circle of the drive housing, serving as a supplementary structure for bottom support. When the drive housing is large in size or heavy in weight, the support block 10 of the inclined part 2 alone may not be able to completely distribute the load. The auxiliary support column 19 can provide additional support from the bottom end of the outer circle of the drive housing, preventing the drive housing from sagging due to its own weight. The auxiliary support column 19 ensures that the support point accurately corresponds to the weak stress area of ​​the drive housing, forming a complete support and clamping network with the top pressure plate and the side clamping assembly 11, ensuring the stability of the drive housing's posture during processing.

[0033] In actual processing, the tooling adjustment and clamping process is efficient and precise. Taking the processing of a medium-sized wind turbine drive housing 20 as an example: First, according to the outer diameter of the drive housing, the support block 10 is installed on the first mounting hole 4 of the corresponding group of the inclined part 2 through the fourth mounting hole, ensuring that the relative support blocks 10 are on the same horizontal plane; then, the mounting frame 5 is fixed to the first mounting hole 4 of the mounting part 3 through the second mounting hole 6, and the height of the mounting frame 5 is adjusted so that the top clamping assembly 11 can be aligned with the outer diameter of the drive housing; then, the horizontal support column 7 and the vertical support column 7 are installed, providing internal support from the side and bottom of the inner diameter of the drive housing respectively; the clamping assembly 11 is activated, and the four V-shaped clamping blocks 12 clamp the outer diameter of the drive housing from the horizontal direction, and the four inclined pressing blocks 15 assist in pressing from the top and bottom directions; finally, the first pressure plate 16 and the second pressure plate 17 are installed, the arc-shaped part 18 of the first pressure plate 16 presses against the top of the inner diameter, the support column 7 of the second pressure plate 17 abuts against the inner diameter, and the auxiliary support column 19 presses against the bottom of the outer diameter. At this point, the drive housing is fixed by a multi-layered structure of "outer clamp + inner support + top pressure + bottom support", eliminating any risk of displacement or deformation during processing.

[0034] When a larger drive housing needs to be replaced, simply loosen the bolts, move the support block 10 to the outer mounting hole of the inclined part 2, adjust the mounting bracket 5 to the outermost first mounting hole 4, replace the shorter horizontal support column 7 and vertical support column 7, and reposition the clamping assembly 11 and pressure plate. The entire process does not require replacing the main tooling; adaptation can be completed simply by adjusting the components, significantly reducing changeover time. The spiral fixing of the support block 10, the V-shaped design of the clamping block 12, the arc-shaped part 18 of the pressure plate and the support column 7, and the supplementary support of the auxiliary support column 19 together construct a highly adaptable and precise clamping system that not only meets the processing requirements of drive housings of different sizes but also ensures the stability of processing accuracy and product quality.

Claims

1. A machining fixture for a large wind turbine drive housing, characterized in that, It includes a base, which is V-shaped, and includes several inclined portions and mounting portions arranged opposite to each other. The mounting portions are located on the top surface of the base, and the mounting portions and inclined portions are provided with several sets of first mounting holes. The mounting section is detachably equipped with a mounting bracket. The base and the mounting bracket are each provided with several clamping components on the mounting side. The clamping components are on the same plane, and the top of the mounting bracket is provided with several pressure plates.

2. The machining fixture for a large wind turbine drive housing according to claim 1, characterized in that, The mounting bracket has detachable support columns on its inner side, and several support columns are arranged opposite each other on the same horizontal plane.

3. The machining fixture for a large wind turbine drive housing according to claim 1, characterized in that, The base has a mounting beam between several inclined sections at its bottom, and the mounting beam has several third mounting holes.

4. The machining fixture for a large wind turbine drive housing according to claim 3, characterized in that, A support column is detachably installed on the mounting beam. The support column is vertically installed and is installed in the third mounting hole.

5. A large wind turbine drive housing processing fixture according to claim 1 or 3, characterized in that, The inclined part is detachably equipped with support blocks, and several support blocks are arranged opposite each other on the same horizontal plane.

6. The machining fixture for a large wind turbine drive housing according to claim 5, characterized in that, The support block is installed on the first mounting hole, and several first mounting holes are evenly distributed.

7. The machining fixture for a large wind turbine drive housing according to claim 1, characterized in that, The clamping assembly includes a clamping block positioned towards the center and mounted on a mounting post.

8. A large wind turbine drive housing processing fixture according to claim 1 or 7, characterized in that, The clamping assembly includes a clamping block that is tilted toward the center.

9. The machining fixture for a large wind turbine drive housing according to claim 1, characterized in that, Several pressure plates are divided into a first pressure plate and a second pressure plate, and the bottom end of the first pressure plate is provided with an arc-shaped part.

10. A large wind turbine drive housing processing fixture according to claim 2, characterized in that, The second pressure plate has a support column at its bottom, and several support columns are on the same plane.

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