Clamping tool for machining stop groove of outer ring of bearing of wind power gear box
By designing a fixture for machining the retaining groove of the outer ring of the wind turbine gearbox bearing, the problem of the outer ring of the wind turbine gearbox bearing running off was solved, realizing low-cost and fast machining of the retaining groove, reducing wind turbine downtime and protecting the bearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING AVIS TRANSMISSION TECH
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-08
AI Technical Summary
In existing technologies, the outer ring of the bearing in a wind turbine gearbox may run out of control. Adding a retaining groove is costly and may cause delays in wind turbine operation.
A clamping fixture for machining the retaining groove of the outer ring of a wind turbine gearbox bearing was designed. By combining components such as V-blocks, cylindrical rods, screws, and plastic films, the fixture achieves stable clamping of the bearing outer ring and machining of the retaining groove.
It achieves low-cost, fast-response stop groove machining, reduces fan downtime, protects bearing raceways and rollers, and is suitable for bearing outer rings of different sizes.
Smart Images
Figure CN224209507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind turbine gearbox repair, specifically to a tooling for machining and clamping the retaining groove of the outer ring of a wind turbine gearbox bearing. Background Technology
[0002] Due to its advantages such as being pollution-free and having low construction costs, wind power generation has experienced rapid development in recent years.
[0003] The high-speed bearings in wind turbine gearboxes often experience outer ring slippage. The solution of adding a retaining groove to the outer ring of the bearing and installing a retaining pin can perfectly solve this problem.
[0004] Replacing the original bearing with a bearing with a retaining groove would increase costs and might delay the normal operation of the fan if the delivery time could not be met. Utility Model Content
[0005] This utility model provides a clamping fixture for machining the retaining groove of the outer ring of a wind turbine gearbox bearing. Its purpose is to overcome the shortcomings of the existing technology and provide a clamping fixture for machining the retaining groove of the outer ring of the original wind turbine gearbox bearing. It is highly versatile, low in cost, can respond quickly, and saves time.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] A fixture for machining and clamping the retaining groove of the outer ring of a wind turbine gearbox bearing, characterized in that:
[0008] V-blocks are fixedly installed on the workbench;
[0009] The lower part of the V-shaped block has a groove;
[0010] The cylindrical rod is placed horizontally in the groove, and a screw hole is opened on the outer circle of the cylindrical rod; the side wall of the V-groove of the V-block has a through hole connecting the V-groove and the groove;
[0011] The outer ring of the bearing is placed in the V-groove of the V-block, and one end face of the outer ring of the bearing is placed on the side wall of the V-groove with a through hole.
[0012] A strip-shaped pressure plate is pressed against the other end face of the bearing outer ring; the strip-shaped pressure plate has a through hole.
[0013] The screw passes through the through hole of the strip pressure plate, the outer ring of the bearing, and the through hole of the V-shaped groove and the groove on the V-block. The lower end of the screw is screwed into the screw hole of the cylindrical rod. The nut is screwed on the upper end of the screw and presses against the upper surface of the strip pressure plate. The top of the cylindrical rod abuts against the side wall of the groove. The strip pressure plate presses the outer ring of the bearing onto the side wall of the V-shaped groove with the through hole.
[0014] It has lifting screws screwed into screw holes on the upper surface of the V-block.
[0015] The lower part of each side of the V-block has a groove. The connecting pad is placed on the worktable. The pressure plate extending to the side of the connecting pad extends into the groove and presses down on the V-block. The connecting screw passes through the through hole opened in the pressure plate. The lower end of the connecting screw is screwed into the screw hole opened in the worktable. The screw head of the connecting screw presses the pressure plate. The pressure plate presses down on the V-block. The V-block is fixedly installed on the worktable.
[0016] The through holes on the sidewall of the V-groove are perpendicular to the sidewall of the V-groove.
[0017] Two V-blocks are fixedly mounted in parallel on the worktable. The cylindrical rod passes through the grooves of the two V-blocks, and the end face of the outer ring of the bearing is supported on the two V-blocks.
[0018] It has two nuts screwed onto the upper end of the screw.
[0019] A plastic film is fitted over the outer ring of the bearing, and the plastic film has a notch corresponding to the position of the retaining groove.
[0020] The magnet is attracted to the corresponding position around the stop groove and presses down the plastic film.
[0021] The advantages of this utility model are:
[0022] 1. The processing tooling has a simple structure, the required materials are easy to obtain, and the cost is low;
[0023] 2. Using this tooling to machine a retaining groove on the outer ring of an existing wind turbine gearbox bearing costs significantly less than the cost of a new bearing;
[0024] 3. Using this tooling to machine the retaining groove on the outer ring of the wind turbine gearbox bearing can provide a quick response, save maintenance and modification time, and reduce wind turbine downtime.
[0025] 4. In addition, this clamping method protects the bearing raceway and bearing rollers from contamination during machining.
[0026] 5. By controlling the distance between the two V-blocks, bearing outer rings of different sizes can be clamped, making it highly versatile. Attached Figure Description
[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0028] Figure 1 This is a cross-sectional view of the present invention;
[0029] Figure 2 for Figure 1 A partial view. Detailed Implementation
[0030] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of this utility model, a more detailed description of this utility model will be provided below in conjunction with the accompanying drawings and specific embodiments.
[0031] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] like Figure 1 , Figure 2 As shown:
[0033] This utility model is a fixture for machining and clamping the retaining groove of the outer ring of a wind turbine gearbox bearing.
[0034] Tooling usage process:
[0035] 1. Lifting screws 9 are screwed into the screw holes 21 on the upper surface of V-block 2. Two V-blocks 2 are placed parallel to each other on the worktable 100 using the lifting screws 9 fixed to them. A total of two V-blocks 2 are installed in parallel. The distance between the two V-blocks 2 can be adjusted to accommodate bearing outer rings 1 of different sizes. Figure 1 Only one cross-sectional view of V-block 2 is shown in the image;
[0036] 2. The lower part of both sides of the V-block 2 has a groove 22. The connecting pad 5 is placed on the worktable 100. The pressure plate 51 extending to the side of the connecting pad 5 extends into the groove 22 and presses down on the V-block 2. After the connecting screw 4 passes through the through hole 52 opened by the pressure plate 51, the lower end of the connecting screw 4 is screwed into the screw hole 101 opened by the worktable 100. The screw head of the connecting screw 4 presses the pressure plate 51, thereby pressing the V-block 2. The V-block 2 is fixedly installed on the worktable 100.
[0037] 3. The cylindrical rod 3 is placed horizontally in the groove 22. The cylindrical rod 3 passes through the groove 22 of the two parallel V-shaped blocks 2. The outer circle of the cylindrical rod 3 is provided with a screw hole 31. The side wall of the V-shaped groove 23 of the V-shaped block 2 has a through hole 24 that connects the V-shaped groove 23 and the groove 22, and the through hole 24 is perpendicular to the side wall 231 of the V-shaped groove 23.
[0038] 4. The outer ring 1 of the bearing is placed in the V groove 23 of the V-block 2. One downward end face of the outer ring 1 is placed and supported on the side wall 231 of the V groove 23 with through hole 24. This end face of the outer ring 1 is supported on two V-blocks 2.
[0039] 5. Press the strip pressure plate 8 against the other upward end face of the bearing outer ring 1. The strip pressure plate 8 spans the inner circle space of the bearing outer ring 1 and presses against the ring body of the bearing outer ring 1. This can stably press the bearing outer ring 1. The strip pressure plate 8 has a through hole 81.
[0040] 6. Adjust the screw hole 31 on the outer circle of the cylindrical rod 3 to align it with the through hole 24. Pass the long screw 6 through the through hole 81 of the strip pressure plate 8, the bearing outer ring 1, and the through hole 24 of the V-block 2. Screw the lower end of the long screw 6 into the screw hole 31 of the cylindrical rod 3. Screw two nuts 7 onto the upper end of the long screw 6. After tightening the nuts 7, the nuts 7 press against the upper surface of the strip pressure plate 8, and the cylindrical rod 3 is pulled and pressed against the side wall of the groove 22. In this way, the strip pressure plate 8 presses the bearing outer ring 1 against the side wall 231 of the V-groove 23 with the through hole 24. The two nuts 7 can play a role in preventing loosening.
[0041] 7. Cover the outer ring 1 of the bearing with a plastic film 13, leaving only one notch to machine the retaining groove 11; a small magnet 12 can be used to attract the corresponding position around the retaining groove 11. The small magnet 12 presses down on the plastic film 13 so that the plastic film 13 cannot move. The plastic film 13 plays a blocking role to prevent cutting fluid and debris from entering the bearing rollers of the outer ring 1 of the bearing.
[0042] 8. After clamping and setting the milling cutter, the stop groove 11 can be machined horizontally.
[0043] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A fixture for machining and clamping the retaining groove of the outer ring of a wind turbine gearbox bearing, characterized in that: The V-block is fixedly installed on the workbench; the lower part of the V-block has a groove; the cylindrical rod is placed horizontally in the groove, and a screw hole is opened on the outer circle of the cylindrical rod; the side wall of the V-groove of the V-block has a through hole connecting the V-groove and the groove; the outer ring of the bearing is placed in the V-groove of the V-block, and one end face of the outer ring of the bearing is placed on the side wall of the V-groove with the through hole; the strip pressure plate presses down on the other end face of the outer ring of the bearing, and the strip pressure plate has a through hole; the screw passes through the through hole of the strip pressure plate, the outer ring of the bearing, and the through hole on the V-block connecting the V-groove and the groove, the lower end of the screw is screwed into the screw hole of the cylindrical rod, the nut is screwed on the upper end of the screw and presses the upper surface of the strip pressure plate, the cylindrical rod abuts against the side wall of the groove, and the strip pressure plate presses the outer ring of the bearing onto the side wall of the V-groove with the through hole.
2. The fixture for machining and clamping the outer ring retaining groove of the wind turbine gearbox bearing as described in claim 1, characterized in that: It has lifting screws screwed into screw holes on the upper surface of the V-block.
3. The fixture for machining and clamping the outer ring retaining groove of the wind turbine gearbox bearing as described in claim 1, characterized in that: The lower part of each side of the V-block has a groove. The connecting pad is placed on the worktable. The pressure plate extending to the side of the connecting pad extends into the groove and presses down on the V-block. The connecting screw passes through the through hole opened in the pressure plate. The lower end of the connecting screw is screwed into the screw hole opened in the worktable. The screw head of the connecting screw presses the pressure plate. The pressure plate presses down on the V-block. The V-block is fixedly installed on the worktable.
4. The fixture for machining and clamping the retaining groove of the outer ring of the wind turbine gearbox bearing as described in claim 1, characterized in that: The through holes on the sidewall of the V-groove are perpendicular to the sidewall of the V-groove.
5. The fixture for machining and clamping the retaining groove of the outer ring of the wind turbine gearbox bearing as described in claim 1, characterized in that: Two V-blocks are fixedly mounted in parallel on the worktable. The cylindrical rod passes through the grooves of the two V-blocks, and the end face of the outer ring of the bearing is supported on the two V-blocks.
6. The fixture for machining and clamping the retaining groove of the outer ring of the wind turbine gearbox bearing as described in claim 1, characterized in that: It has two nuts screwed onto the upper end of the screw.
7. The fixture for machining and clamping the retaining groove of the outer ring of the wind turbine gearbox bearing as described in claim 1, characterized in that: A plastic film is fitted over the outer ring of the bearing, and the plastic film has a notch corresponding to the position of the retaining groove.
8. The fixture for machining and clamping the retaining groove of the outer ring of the wind turbine gearbox bearing as described in claim 7, characterized in that: The magnet is attracted to the corresponding position around the stop groove and presses down the plastic film.