Positioning tool for processing bearing seat of wind turbine

Abstract

The application relates to the technical field of bearing seat positioning tooling, in particular to a positioning tooling for wind driven generator bearing seat machining, which comprises a supporting seat and a shaft column installed on the supporting seat, a supporting rod for strengthening the connection between the supporting seat and the shaft column is arranged between the supporting seat and the shaft column, a mounting frame is installed on the supporting seat, the front end of the shaft column is fixedly connected with a mounting disc coaxial with the shaft column, a positioning disc coaxial with the mounting disc is connected with the side bearing of the mounting disc, a connecting disc is installed on the side of the positioning disc through a limiting mechanism, the limiting mechanism comprises mounting holes penetrating through the two sides of the positioning disc, the mounting holes are coaxially arranged with the connecting disc, and threaded holes are arranged on the connecting disc at equal angles. When the bearing seat is machined, only one positioning part needs to be disassembled and reassembled, the multi-position machining of the bearing seat can be realized, the problem that the positioning part needs to be disassembled and reassembled for many times when the machining position is adjusted, the machining efficiency is reduced, and the labor burden of the workers is increased can be avoided.

Description

Technical Field

[0001] This invention relates to the field of bearing housing positioning fixture technology, specifically a positioning fixture for machining wind turbine bearing housings. Background Technology

[0002] With the rapid development of wind power generation technology, high-power wind turbine generator sets have become important equipment in the new energy field. As the core load-bearing component connecting the main frame and the transmission system, the wind turbine generator bearing housing is characterized by its large external dimensions, uneven wall thickness, multiple flange end faces and bearing hole systems, and strict requirements for form and position tolerances. During the processing and manufacturing process, the bearing housing needs to undergo multiple processes such as milling, boring, and drilling to meet the positional and dimensional accuracy requirements of each mounting surface, mating hole, and connecting hole. In the field of machine tool processing, for the clamping and positioning of large disc-shaped or box-shaped workpieces, it is usually necessary to use special positioning fixtures to accurately determine the position of the workpiece on the machine tool table and reliably fix it. As an important part of machine tool accessories, the structural design of positioning fixtures directly affects the clamping efficiency, positioning accuracy and machining quality stability of the workpiece. Existing positioning fixtures for bearing housing machining, such as the wind turbine front bearing housing positioning fixture disclosed in CN213034082U, use threaded holes on the bearing housing mounting base plate to fix the front bearing housing on the base plate. The base plate is fixed to the machining base by six evenly distributed fixing holes on its circumference, with adjacent holes spaced 60 degrees apart. When it is necessary to rotate the front bearing housing 60 degrees to align the next machining point with the cutting head, simply loosen the bearing housing mounting base plate from the machining base and rotate it by the distance of one fixing hole to achieve the 60-degree rotation of the front bearing housing, making the operation very convenient. In the aforementioned prior art, each time the processing position is changed, the nut needs to be removed and the bearing housing mounting base plate needs to be separated from the processing base until the fixing hole and column are separated before the bearing housing can rotate with the bearing housing mounting base plate. This greatly reduces the efficiency during the processing of the bearing housing and greatly increases the workload of the workers during the disassembly and assembly process. Therefore, a positioning fixture for machining wind turbine bearing housings is needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a positioning fixture for machining wind turbine bearing housings, in order to solve the problem mentioned in the background art that existing positioning fixtures for machining wind turbine bearing housings require the disassembly of a large number of positioning parts when changing the machining position, resulting in low machining efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A positioning fixture for machining wind turbine bearing housings includes a support base and a shaft mounted thereon. A support rod is provided between the support base and the shaft to strengthen their connection. A mounting bracket is mounted on the support base. A mounting plate coaxial with the shaft is fixedly connected to the front end of the shaft. A positioning plate coaxial with the mounting plate is bearing-connected to the side of the mounting plate. A connecting plate is mounted on the side of the positioning plate via a limiting mechanism. The limiting mechanism includes mounting holes penetrating both sides of the positioning plate, which are coaxial with the connecting plate. Threaded holes are provided at equal angles on the connecting plate, and each threaded hole is threaded with a locking bolt. A corresponding pressure plate is movably sleeved on each locking bolt. A positioning mechanism for positioning the connecting plate is provided between the rear end of the shaft and the mounting plate. The positioning mechanism includes through holes penetrating both sides of the mounting plate. A support rod shaft for supporting the bearing housing is also mounted on the support base.

[0005] Preferably, the limiting mechanism further includes positioning holes penetrating both sides of the connecting plate, and the positioning holes are set at equal angles with respect to the axis of the connecting plate. Positioning posts are installed at equal angles on the positioning plate, and the positioning posts are set in one-to-one correspondence with the positioning holes.

[0006] Preferably, a support frame coaxially connected to the positioning plate is fixedly connected, and an arm is connected to the support frame at an equal angle. A universal ball is installed at the front end of the arm. An adjusting bolt coaxially connected to the positioning plate is also bearing-connected to the positioning plate, and a nut is threadedly connected to the outer side of the adjusting bolt. One end of the support arm is connected to the outer side of the nut at an equal angle, and the other end of the support arm is connected to the rear end of the corresponding arm.

[0007] Preferably, a strip-shaped through hole is provided on the rear end of the boom, the support arm has a U-shaped structure, and the other end of the support arm slides through the strip-shaped through hole at the rear end of the boom.

[0008] Preferably, the outer diameter of the support frame is smaller than the inner diameter of the mounting hole, so that the support frame will not cause obstruction when the connecting plate is installed on the connecting plate.

[0009] Preferably, the positioning mechanism further includes limiting holes provided on the side of the connecting plate, and the limiting holes are distributed at equal angles with respect to the axis of the connecting plate. The through holes are distributed at equal angles with respect to the axis of the mounting plate, and the through holes and limiting holes are provided in a one-to-one correspondence.

[0010] Preferably, a worm gear is connected to the outer bearing of the shaft column, and a worm shaft is meshed with the outer side of the worm gear. A servo motor is fixedly mounted on the mounting bracket, and the worm shaft bearing is connected to the mounting bracket. The worm shaft is connected to the servo motor through a belt drive structure.

[0011] Preferably, a support plate is provided between the worm gear disc and the mounting disc, which is movably nested on the outside of the shaft column. The shaft column has grooves distributed at equal angles on its outer side. The two ends of the grooves are connected by sliding columns. A slider is movably nested on the outside of the sliding column. The slider is slidably connected in the groove. A spring is provided between the slider and one end of the groove, which is nested on the outside of the sliding column. The sliders are distributed at equal angles on the inner side of the support plate. Limiting posts are distributed at equal angles on the side of the support plate facing the mounting disc. The limiting posts are corresponding to the through holes one by one.

[0012] Preferably, the worm gear disk is provided with pressing blocks at equal angles on the side facing the support disk, and the support disk is provided with bearing blocks at equal angles on the side facing the worm gear disk, and the bearing blocks and pressing blocks are provided in a one-to-one correspondence.

[0013] Preferably, the side of the pressure block facing the extrusion block and the side of the extrusion block facing the pressure block are both inclined surfaces, and the inclined surfaces on the pressure block and the extrusion block are parallel to each other, and the inclined surfaces on the pressure block and the extrusion block are both smooth surfaces.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the positioning fixture for processing wind turbine bearing housings only requires disassembling and assembling the positioning parts once during bearing housing processing, thus enabling multi-position processing of the bearing housing. This avoids the problem of repeatedly disassembling and assembling the positioning parts when adjusting the processing position, which leads to reduced processing efficiency and increased labor burden on workers. 1. By setting the positioning plate to rotate, and setting positioning pins on the positioning plate and positioning holes corresponding to the positioning pins on the connecting plate, the bearing housing can be coaxially connected with the positioning plate after being installed on the connecting plate. This allows the bearing housing to rotate even when pressed by the universal ball, thus facilitating the adjustment of the processing position. 2. By driving the worm gear to rotate through the servo motor, the extrusion block applies pressure to the bearing block, causing the support plate on which the bearing block is installed to move. This allows the limiting post on the support plate to pass through the through hole and engage with the corresponding limiting hole, thus limiting the connection plate and preventing its rotation. This ensures the stability of the bearing seat during processing. In addition, by driving the worm gear to rotate in the opposite direction, and with the spring's reset, the limiting post can be separated from the limiting hole. This allows the processing position of the bearing seat to be adjusted without disassembling the positioning parts, which helps improve processing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram of point A in the middle; Figure 4 This is a schematic diagram of a partial explosion structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of point B; Figure 6 This is a schematic cross-sectional view of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram of point C; Figure 8 This is a top view of the structure of the present invention.

[0016] In the diagram: 1. Support base; 2. Mounting bracket; 3. Shaft column; 4. Support rod; 5. Support roller shaft; 6. Mounting plate; 7. Connecting plate; 8. Servo motor; 9. Belt drive structure; 10. Worm shaft; 11. Worm gear disc; 12. Extrusion block; 13. Support plate; 14. Pressure block; 15. Limiting post; 16. Through hole; 17. Positioning plate; 18. Limiting hole; 19. Threaded hole; 20. Mounting hole; 21. Positioning post; 22. Adjusting bolt; 23. Support frame; 24. Arm; 25. Universal ball; 26. Support arm; 27. Nut; 28. Pressure plate; 29. ​​Locking bolt; 30. Positioning hole; 31. Slide groove; 32. Slide column; 33. Slider; 34. Spring. Detailed Implementation

[0017] 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 embodiments of the present invention, and 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.

[0018] Please see Figures 1-8 The present invention provides the following technical solution: Example 1: To address the problem that previous positioning fixtures for wind turbine bearing housings directly locked the bearing housing during positioning, leading to significant efficiency reduction due to the need for workers to remove numerous positioning parts when rotation is required, the following technical solution is provided: a positioning fixture for wind turbine bearing housing processing, comprising a support base 1 and a shaft column 3 mounted thereon. A support rod 4 is provided between the support base 1 and the shaft column 3 to strengthen their connection. A mounting bracket 2 is installed on the support base 1. The front of the shaft column 3... The end is fixedly connected to a mounting plate 6 coaxially therewith, and the side of the mounting plate 6 is connected to a positioning plate 17 coaxially therewith via a bearing. The side of the positioning plate 17 is fitted with a connecting plate 7 via a limiting mechanism, and the limiting mechanism includes mounting holes 20 penetrating both sides of the positioning plate 17. The mounting holes 20 are coaxially arranged with the connecting plate 7. The connecting plate 7 is provided with threaded holes 19 at equal angles, and each threaded hole 19 is threaded with a locking bolt 29. Each locking bolt 29 is movably fitted with a corresponding pressure plate 28. The support base 1 is also fitted with a support roller shaft 5 for supporting the bearing seat.

[0019] In a preferred embodiment of the invention, the limiting mechanism further includes positioning holes 30 penetrating both sides of the connecting plate 7, and the positioning holes 30 are set at equal angles with respect to the axis of the connecting plate 7. Positioning posts 21 are installed at equal angles on the positioning plate 17, and the positioning posts 21 are set in a one-to-one correspondence with the positioning holes 30.

[0020] In the above technical solution, the positioning post 21 corresponds to the positioning hole 30, so that the positioning post 21 can be engaged into the corresponding positioning hole 30, thereby facilitating the initial positioning of the connecting plate 7. In a preferred embodiment of the invention, a support frame 23 coaxially connected to the positioning plate 17 is fixedly connected, and an arm 24 is connected to the support frame 23 at equal angles. A universal ball 25 is installed at the front end of the arm 24. An adjusting bolt 22 coaxially connected to the positioning plate 17 is also bearing-connected to the positioning plate 17, and a nut 27 is threadedly connected to the outer side of the adjusting bolt 22. One end of a support arm 26 is connected to the outer side of the nut 27 at equal angles, and the other end of the support arm 26 is axially connected to the rear end of the corresponding arm 24. A strip-shaped through hole is provided on the rear end of the arm 24. The support arm 26 has a U-shaped structure, and the other end of the support arm 26 slides through the strip-shaped through hole at the rear end of the arm 24.

[0021] In the above technical solution, by rotating the adjusting bolt 22, the position of the nut 27 can be changed, which not only allows the support arm 26 to slide on the strip through hole of the arm 24, but also allows the arm 24 to rotate, thereby allowing the universal ball 25 to press against the connecting plate 7, thus enabling further positioning of the connecting plate 7. In a preferred embodiment of the invention, the outer diameter of the support frame 23 is smaller than the inner diameter of the mounting hole 20, so that the support frame 23 does not obstruct the mounting of the connecting plate 7.

[0022] In the above technical solution, the inner diameter of the mounting hole 20 is set to be larger than the outer diameter of the support frame 23, which makes it easy for the support frame 23 and the components connected thereon to completely pass through the mounting hole 20, thus avoiding any obstruction to the fit between the connecting plate 7 and the mounting plate 6 caused by the support frame 23 and the components connected thereon.

[0023] according to Figures 4-6 In use, the bearing housing of the wind turbine is supported on the support rod shaft 5 by a crane, so that the bearing housing is in contact with the connecting plate 7; Then, the locking bolt 29 is passed through the corresponding hole on the bearing housing, and the locking bolt 29 is screwed into the corresponding threaded hole 19 on the connecting plate 7. During the above process, the connecting plate 7 and the bearing housing can be stably connected by the pressure plate 28 and the locking bolt 29; Then, the connecting plate 7 and the bearing seat are attached to the positioning plate 17 by a crane. During the attachment process, the positioning pin 21 is inserted into the corresponding positioning hole 30. In addition, after the entire assembly consisting of the connecting plate 7 and the bearing seat is fitted with the positioning plate 17, the adjusting bolt 22 is turned with a tool. When the adjusting bolt 22 rotates, the nut 27 can move along its axis due to the limiting effect of the support frame 23 and the arm 24 on the nut 27. When the nut 27 moves, it can gradually drive the arm 24 to rotate, causing the universal ball 25 on the arm 24 to press against the connecting plate 7. At this time, the whole consisting of the connecting plate 7 and the bearing seat can stably and tightly adhere to the surface of the positioning plate 17. At this time, since the positioning plate 17 can rotate on the mounting plate 6, the entire assembly consisting of the connecting plate 7 and the bearing seat can rotate through the positioning plate 17, thereby allowing the part to be processed to be rotated to the processing station as needed. After the entire assembly consisting of the connecting disc 7 and the bearing housing rotates to the appropriate machining position, the limiting post 15 passes through the through hole 16 and engages in the corresponding limiting hole 18, thereby achieving the final limiting of the entire assembly consisting of the connecting disc 7 and the bearing housing and preventing it from rotating during the machining process.

[0024] Example 2: To solve the problem of how to pass the limiting post 15 through the through hole 16 in Example 1, the following technical solution is provided: Specifically, a positioning mechanism for positioning the connecting plate 7 is provided between the rear end of the shaft post 3 and the mounting plate 6, and the positioning mechanism includes through holes 16 passing through both sides of the mounting plate 6.

[0025] In a preferred embodiment of the invention, the positioning mechanism further includes limiting holes 18 provided on the side of the connecting plate 7, and the limiting holes 18 are distributed at equal angles with respect to the axis of the connecting plate 7, and the through holes 16 are distributed at equal angles with respect to the axis of the mounting plate 6, and the through holes 16 and the limiting holes 18 are provided in a one-to-one correspondence.

[0026] In the above technical solution, it is convenient for the component to pass through the through hole 16 and then extend into the corresponding limiting hole 18, thereby facilitating the final limiting of the connecting plate 7 and preventing it from rotating with the positioning plate 17 after it is attached to the positioning plate 17.

[0027] In a preferred embodiment of the invention, a worm gear disk 11 is connected to the outer bearing of the column 3, and a worm shaft 10 is meshed with the outer side of the worm gear disk 11. A servo motor 8 is fixedly mounted on the mounting bracket 2, and the worm shaft 10 is connected to the mounting bracket 2 by a bearing. The worm shaft 10 is connected to the servo motor 8 through a belt drive structure 9.

[0028] In the above technical solution, the worm shaft 10 can be driven to rotate by the operation of the servo motor 8 and the belt drive structure 9, and then the worm shaft 10 is driven to rotate by the meshing of the worm wheel 11 with the worm wheel 11.

[0029] In a preferred embodiment of the invention, a support plate 13 is provided between the worm gear disk 11 and the mounting disk 6, which is movably nested on the outside of the shaft post 3. The outer side of the shaft post 3 is provided with grooves 31 at equal angles. The two ends of the grooves 31 are connected by sliding posts 32. A slider 33 is movably nested on the outside of the sliding posts 32. The slider 33 is slidably connected in the grooves 31. A spring 34 is provided between the slider 33 and one end of the groove 31, which is nested on the outside of the sliding posts 32. The slider 33 is movably nested on the inner side of the support plate 13. Limiting posts 15 are movably nested on the side of the support plate 13 facing the mounting disk 6 at equal angles. The limiting posts 15 are provided in a one-to-one correspondence with the through holes 16.

[0030] In the above technical solution, the support plate 13 can slide stably on the outside of the shaft column 3, which makes it easy to insert the limiting column 15 through the hole 16 and then into the corresponding limiting hole 18, so that the limiting column 15 can finally limit the connecting plate 7.

[0031] In a preferred embodiment of the invention, the worm gear disk 11 is provided with pressing blocks 12 at equal angles to the side of the support disk 13, and the support disk 13 is provided with bearing blocks 14 at equal angles to the side of the worm gear disk 11. The bearing blocks 14 and pressing blocks 12 are provided in a one-to-one correspondence. The side of the bearing blocks 14 facing the pressing blocks 12 and the side of the pressing blocks 12 facing the bearing blocks 14 are both inclined slopes, and the inclined slopes on the bearing blocks 14 and the pressing blocks 12 are parallel to each other. The inclined slopes on the bearing blocks 14 and the pressing blocks 12 are both smooth surfaces.

[0032] In the above technical solution, the pressure block 14 corresponds to the extrusion block 12, which facilitates mutual extrusion between the two. The extrusion surface is set as an inclined surface, which facilitates the extrusion block 12 to extrude the pressure block 14 when it rotates, thereby allowing the support plate 13 to slide on the outside of the shaft column 3.

[0033] according to Figures 2-3 as well as Figures 6-7 When in use, the servo motor 8 can make the worm shaft 10 rotate under the action of the belt drive structure 9, which in turn can drive the worm wheel 11 meshing with the worm shaft 10 to rotate. When the worm gear disk 11 rotates, the pressing block 12 on it will press the corresponding pressure block 14, causing the support disk 13 on which the pressure block 14 is installed to move. During the above process, the slider 33 will slide in the groove 31 to ensure that the support disk 13 only moves and does not rotate. In addition, during the above process, the spring 34 is compressed, so that when the worm gear disk 11 rotates in the reverse direction, the spring 34 drives the support disk 13 to reset. The movement of the support plate 13 during the above process will drive the limiting post 15 to gradually pass through the through hole 16 and engage in the corresponding limiting hole 18; Through the above process, the bearing housing can be stably machined. When the worm gear disk 11 rotates in the reverse direction, the limiting post 15 can be gradually separated from the limiting hole 18, thereby releasing a certain limitation of the whole consisting of the connecting disk 7 and the bearing housing, so that it can rotate with the positioning disk 17, which makes it convenient to adjust the machining position. The above process eliminates the need for workers to disassemble and assemble positioning parts, thus helping to improve processing efficiency.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for machining a wind turbine bearing housing, comprising a support base (1) and a shaft column (3) mounted thereon, characterized in that: A support rod (4) is provided between the support base (1) and the shaft column (3) to strengthen the connection between the two. A mounting bracket (2) is installed on the support base (1). A mounting plate (6) is fixedly connected to the front end of the shaft column (3) and is coaxial with it. A positioning plate (17) is coaxial with it on the side bearing of the mounting plate (6). A connecting plate (7) is installed on the side of the positioning plate (17) through a limiting mechanism. The limiting mechanism includes mounting holes (20) that penetrate both sides of the positioning plate (17). The mounting holes (20) are coaxial with the connecting plate (7). Threaded holes (19) are provided at equal angles on the connecting plate (7). Each threaded hole (19) is threaded with a locking bolt (29), and each locking bolt (29) is movably fitted with a corresponding pressure plate (28). A positioning mechanism for positioning the connecting plate (7) is provided between the rear end of the shaft (3) and the mounting plate (6), and the positioning mechanism includes through holes (16) penetrating both sides of the mounting plate (6). A support rod shaft (5) for supporting the bearing seat is also installed on the support base (1). A worm gear disk (11) is connected to the outer bearing of the shaft (3), and a worm shaft (10) is meshed with the outer side of the worm gear disk (11). The mounting bracket (2) is fixed with A servo motor (8) is installed, and the worm shaft (10) is connected to the mounting bracket (2) by a bearing. The worm shaft (10) is connected to the servo motor (8) through a belt drive structure (9). A support plate (13) is provided between the worm wheel disk (11) and the mounting plate (6) and is movably nested on the outside of the shaft column (3). Slide grooves (31) are distributed at equal angles on the outside of the shaft column (3). The two ends of the slide groove (31) are connected by slide columns (32). A slider (33) is movably nested on the outside of the slide column (32). The slider (33) is slidably connected in the slide groove (31). The slider (33) and the slide groove (31) are connected in a slidable manner. A spring (34) nested on the outside of the sliding column (32) is provided between one end of the inner side of the slide (31). The slider (33) is distributed at equal angles on the inner side of the support plate (13). The support plate (13) is distributed at equal angles on the side facing the mounting plate (6), and the limit post (15) is provided in a one-to-one correspondence with the through hole (16). The worm gear disk (11) is provided with a pressing block (12) at equal angles on the side facing the support plate (13). The support plate (13) is provided with a pressure block (14) at equal angles on the side facing the worm gear disk (11), and the pressure block (14) is provided in a one-to-one correspondence with the pressing block (12).

2. The positioning fixture for machining wind turbine bearing housings according to claim 1, characterized in that: The limiting mechanism also includes positioning holes (30) that penetrate both sides of the connecting plate (7), and the positioning holes (30) are set at equal angles with respect to the axis of the connecting plate (7). Positioning posts (21) are installed at equal angles on the positioning plate (17), and the positioning posts (21) and positioning holes (30) are set in a one-to-one correspondence.

3. A positioning fixture for machining wind turbine bearing housings according to claim 2, characterized in that: The positioning plate (17) is fixedly connected to a support frame (23) coaxial with it, and the support frame (23) is connected to an arm (24) at an equal angle. A universal ball (25) is installed at the front end of the arm (24). The positioning plate (17) is also connected to an adjusting bolt (22) coaxial with it, and a nut (27) is threaded on the outside of the adjusting bolt (22). One end of a support arm (26) is connected to the outside of the nut (27) at an equal angle, and the other end of the support arm (26) is connected to the rear end of the corresponding arm (24).

4. A positioning fixture for machining wind turbine bearing housings according to claim 3, characterized in that: The arm (24) has a strip-shaped through hole at its rear end, and the support arm (26) has a square-shaped structure, with the other end of the support arm (26) sliding through the strip-shaped through hole at the rear end of the arm (24).

5. A positioning fixture for machining wind turbine bearing housings according to claim 3, characterized in that: The outer diameter of the support frame (23) is smaller than the inner diameter of the mounting hole (20) so that the support frame (23) will not cause obstruction when the connecting plate (7) is installed on the connecting plate (7).

6. A positioning fixture for machining wind turbine bearing housings according to claim 1, characterized in that: The positioning mechanism also includes a limiting hole (18) provided on the side of the connecting plate (7), and the limiting hole (18) is distributed at equal angles with respect to the axis of the connecting plate (7). The through hole (16) is distributed at equal angles with respect to the axis of the mounting plate (6), and the through hole (16) and the limiting hole (18) are provided in a one-to-one correspondence.

7. A positioning fixture for machining wind turbine bearing housings according to claim 6, characterized in that: The side of the pressure block (14) facing the extrusion block (12) and the side of the extrusion block (12) facing the pressure block (14) are both inclined slopes, and the inclined slopes on the pressure block (14) and the extrusion block (12) are parallel to each other. The inclined slopes on the pressure block (14) and the extrusion block (12) are both smooth surfaces.

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