A three-disk grinding head turntable

Abstract

This invention discloses a three-tooth-disc grinding head rotary table, including a base and a rotating platform rotatably connected to the top of the base. The base has a linkage toothed disc and a drive assembly for driving the linkage toothed disc on its inner and outer sides, respectively. A central rotating toothed disc, meshing with the linkage toothed disc, is rotatably connected to the inner surface of the base. The top of the linkage toothed disc is fixedly connected to the bottom of the rotating platform. In this application, the positioning toothed disc is first disengaged from the central rotating toothed disc by the cooperation of push cylinder one and push cylinder two. The reducer drives the drive wheel to rotate, which in turn drives the linkage toothed disc, causing the rotating platform and the central rotating toothed disc to rotate. After the reducer stops running, push cylinder one and push cylinder two pull the positioning toothed disc downwards. The positioning toothed disc engages with the top of the central rotating toothed disc to position the central rotating toothed disc, thereby locking the linkage toothed disc and the rotating platform. This ensures stable operation while guaranteeing the positioning and rotational accuracy of the rotating platform through the cooperation of the three toothed discs.

Description

Technical Field

[0001] This invention relates to the field of grinding head rotary table technology, and more particularly to a three-tooth disc grinding head rotary table. Background Technology

[0002] The grinding head rotary table is a high-precision rotary functional component on grinding and polishing equipment used to support and install multiple grinding spindles and can continuously rotate around the central axis. It belongs to the machine tool tower structure. By rotating and switching different grinding head positions, it can quickly switch the grinding wheel type, grinding angle and processing steps. It is suitable for batch precision grinding and polishing of discs, rings and hardware parts.

[0003] Chinese Patent Publication No. CN206140297U, published on 20170503, discloses a grinding machine worktable, including a base and a rotary table mounted on the base. The rotary table is connected to a drive mechanism that drives the rotary table to rotate. The drive mechanism includes a drive motor. A pulley fixed to the bottom of the base is provided between the base and the rotary table. The pulley is connected to the base via a transmission belt. The key feature is that a horizontal maintaining mechanism is provided between the rotary table and the base to ensure that the working surface of the rotary table is always parallel to the bottom surface. An anti-deviation mechanism is also provided between the rotary table and the base to ensure that the rotation center of the rotary table remains unchanged during rotation.

[0004] Existing three-tooth disc grinding head rotary tables mostly use servo motors and reducers to directly drive the rotary table to rotate coaxially. However, due to the persistent backlash of traditional reducers, the rotary table is prone to erratic movement. The positioning and transmission accuracy can be further optimized, so there is an urgent need to propose a corresponding three-tooth disc grinding head rotary table to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a three-tooth disc grinding head rotary table in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A three-tooth grinding head rotary table includes a base and a rotating platform rotatably connected to the top of the base. The base has a linkage toothed disc and a drive assembly for driving the linkage toothed disc respectively on its inner and outer sides. A central rotating toothed disc that meshes with the linkage toothed disc is rotatably connected to the inner surface wall of the base. The top of the linkage toothed disc is fixedly connected to the bottom of the rotating platform. The base integrates a positioning toothed disc and a lifting assembly for raising and lowering the positioning toothed disc. The bottom of the positioning toothed disc engages with the top of the central rotating toothed disc.

[0008] Preferably, a positioning seat is fixedly connected to the top of the rotating platform. The positioning seat is provided with a support plate and a push-pull part for adjusting the height of the support plate. Two sets of top frames and a translation part for pushing the two sets of top frames to move relative to each other are respectively provided on the inner and outer sides of the top of the support plate. Positioning strips are fixedly connected to the top of each set of top frames. A protruding rod is passed through the top of the positioning seat. A spring is fixedly connected between the bottom of the protruding rod and the top of the support plate. Two sets of pressure strips and a fixing part for retracting the pressure strips are provided inside the positioning seat.

[0009] Preferably, the fixing part includes a transmission rod rotatably connected to the inner surface wall of the positioning seat, the outer surface wall of the transmission rod being screwed into the inner surface wall of the two sets of pressure strips through two sets of threaded grooves, and a smooth rod slidably connected to the inner surface wall of the positioning seat is fixedly connected to the two sets of pressure strips.

[0010] Preferably, the outer wall of the positioning seat and the outer wall of the transmission rod are respectively fixedly connected to the bushing and the turntable, the inner wall of the turntable is screwed with a locking rod, and the outer side of the bushing is provided with a screw hole one and a screw hole two that fit with the locking rod.

[0011] Preferably, the translation part includes a second rotating component that is fixedly connected to the outer wall of the pallet, and a lead screw is fixedly connected to the output end of the second rotating component. The outer wall of the lead screw is screwed with a screw block that is fixedly connected to the bottom of the top frame.

[0012] Preferably, the push-pull part includes a rotating component that is fixedly connected to the bottom of the positioning seat. The output end of the rotating component is fixedly connected to a threaded rod, and the outer wall of the threaded rod is screwed with a threaded sleeve that is fixedly connected to the bottom of the support plate.

[0013] Preferably, the outer side of the rotating component is provided with an outer frame that is fixedly connected to the support plate, and the outer wall of the outer frame is slidably connected to the inner wall of the positioning seat through a vertical groove.

[0014] Preferably, the lifting assembly includes a first push cylinder and a second push cylinder fixedly connected to the inner wall of the base, and the output ends of the first push cylinder and the second push cylinder are both fixedly connected to the bottom of the positioning gear plate.

[0015] Preferably, the drive assembly includes a reducer fixedly connected to the bottom of the base, and a drive wheel fixedly connected to the output end of the reducer and meshing with the linkage gear plate. The outer wall of the vertical end of the rotating table is rotatably connected to the inner wall of the base through a bearing.

[0016] A method for using a three-tooth disc grinding head rotary table includes the following steps:

[0017] S1. Place the workpiece above multiple sets of protruding rods. Rotating component 1 drives the transmission rod to rotate. The transmission rod drives two sets of screw blocks to move relative to each other. The two sets of screw blocks move relative to each other in conjunction with the corresponding positioning strips. After both sets of positioning strips contact the outer side of the workpiece, the workpiece is leveled.

[0018] S2. Push the workpiece down so that its bottom moves down a corresponding distance. The protrusions at different positions move down to different degrees and compress the corresponding springs. Then rotate the lead screw to rotate for the corresponding cycle, so that it drives two sets of positioning bars. The two sets of positioning bars hug the outside of the protrusions, thereby locking the posture of multiple sets of protrusions. Multiple sets of protrusions form a contour that fits the shape of the bottom of the workpiece. Subsequent workpieces in the same batch only need to be aligned with the contour formed by multiple sets of protrusions at their bottom to achieve centered and stable placement of the workpiece. Finally, the workpiece is fixed by the two sets of positioning bars.

[0019] S3. First, the positioning gear plate is pushed away from the central gear plate by the cooperation of the first and second push cylinders. The reducer drives the drive wheel to rotate, the drive wheel drives the linkage gear plate, and the linkage gear plate drives the rotating table and the central gear plate to rotate.

[0020] S4. After the reducer stops running, push cylinder one and push cylinder two pull the positioning gear plate downward. The positioning gear plate achieves the positioning of the intermediate gear plate by meshing with the top of the intermediate gear plate, thereby locking the linkage gear plate and the rotating table. This ensures stable operation, and the positioning and rotation accuracy of the rotating table is guaranteed by the cooperation of the three gear plates.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] 1. In this application, the positioning gear plate is first disengaged from the central rotating gear plate by the cooperation of the first and second push cylinders. The reducer drives the drive wheel to rotate, the drive wheel drives the linkage gear plate, and the linkage gear plate drives the rotating table and the central rotating gear plate to rotate. After the reducer stops running, the first and second push cylinders pull the positioning gear plate downward. The positioning gear plate achieves the positioning of the central rotating gear plate by meshing with the top of the central rotating gear plate, thereby locking the linkage gear plate and the rotating table. This ensures stable operation, and the positioning and rotation accuracy of the rotating table is guaranteed by the cooperation of the three gear plates.

[0023] 2. In this application, the workpiece is placed above multiple sets of protruding rods. A rotating component drives a transmission rod to rotate, which in turn drives two sets of screw blocks to move relative to each other. The two sets of screw blocks are linked to the corresponding positioning strips to move relative to each other. After both sets of positioning strips contact the outer side of the workpiece, the workpiece is leveled. Then, the workpiece is pushed down so that its bottom moves down a corresponding distance. The protruding rods at different positions move down to different degrees and compress the corresponding springs. Then, the lead screw is rotated to rotate in a corresponding cycle, driving the two sets of positioning strips. The two sets of positioning strips clamp the protruding rods on the outer side, thereby locking the posture of the multiple sets of protruding rods. The multiple sets of protruding rods form a contour that fits the shape of the bottom of the workpiece. Subsequent workpieces in the same batch only need to have their bottoms aligned with the contour formed by the multiple sets of protruding rods to achieve centered and stable placement of the workpiece. Finally, the workpiece is fixed by the two sets of positioning strips. This method can accommodate the positioning of workpieces of different shapes on the top of the rotary table, while also avoiding the need for centering and leveling the workpiece each time, thus improving the convenience and versatility of the three-tooth disc grinding head rotary table. Attached Figure Description

[0024] Figure 1 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of a positioning strip structure provided according to an embodiment of the present invention is shown;

[0026] Figure 3 A schematic diagram of a positioning seat structure provided according to an embodiment of the present invention is shown;

[0027] Figure 4 A schematic diagram of a pallet structure provided according to an embodiment of the present invention is shown;

[0028] Figure 5 A schematic diagram of a spring structure provided according to an embodiment of the present invention is shown.

[0029] Legend:

[0030] 1. Base; 2. Reducer; 3. Drive wheel; 4. Linkage gear plate; 5. Central gear plate; 6. Push cylinder one; 7. Push cylinder two; 8. Positioning gear plate; 9. Rotating table; 10. Bearing; 11. Positioning seat; 12. Bushing; 13. Turntable; 14. Locking rod; 15. Top frame; 16. Positioning strip; 17. Protruding rod; 18. Transmission rod; 19. Screw hole one; 20. Screw hole two; 21. Rotating component one; 22. Screw sleeve; 23. Threaded rod; 24. Support plate; 25. Rotating component two; 26. Outer frame; 27. Screw block; 28. Lead screw; 29. ​​Smooth rod; 30. Pressure strip; 31. Spring. Detailed Implementation

[0031] 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.

[0032] Example 1:

[0033] Please see Figures 1-5 The present invention provides a technical solution:

[0034] A three-tooth grinding head rotary table includes a base 1 and a rotary table 9 rotatably connected to the top of the base 1. A linkage toothed disc 4 and a drive assembly for driving the linkage toothed disc 4 are respectively arranged on the inner and outer sides of the base 1. A central rotating toothed disc 5, meshing with the linkage toothed disc 4, is rotatably connected to the inner surface wall of the base 1. The top of the linkage toothed disc 4 is fixedly connected to the bottom of the rotary table 9. A positioning toothed disc 8 and a lifting assembly for raising and lowering the positioning toothed disc 8 are integrated inside the base 1. The bottom of the positioning toothed disc 8 engages with the top of the central rotating toothed disc 5. The lifting assembly includes a push cylinder 6 and a push cylinder 7 fixedly connected to the inner surface wall of the base 1. The output ends of both push cylinder 6 and push cylinder 7 are fixedly connected to the bottom of the positioning toothed disc 8 for controlling the raising and lowering of the positioning toothed disc 8. The drive assembly includes a reducer 2 fixedly connected to the bottom of the base 1. A drive wheel 3, meshing with the linkage toothed disc 4, is fixedly connected to the output end of the reducer 2. The outer wall of the vertical end of the rotary table 9 is rotatably connected to the inner surface wall of the base 1 via a bearing 10. The reducer 2 drives the drive wheel 3 to rotate, and the drive wheel 3 drives the linkage toothed disc 4.

[0035] First, the positioning gear plate 8 is disengaged from the central rotating gear plate 5 by the cooperation of the first pushing cylinder 6 and the second pushing cylinder 7. The reducer 2 drives the drive wheel 3 to rotate, the drive wheel 3 drives the linkage gear plate 4, and the linkage gear plate 4 drives the rotating table 9 and the central rotating gear plate 5 to rotate. After the reducer 2 stops running, the first pushing cylinder 6 and the second pushing cylinder 7 pull the positioning gear plate 8 downward. The positioning gear plate 8 achieves the positioning of the central rotating gear plate 5 by meshing with the top of the central rotating gear plate 5, thereby locking the linkage gear plate 4 and the rotating table 9. This ensures stable operation, and the positioning and rotation accuracy of the rotating table 9 is guaranteed by the cooperation of the three gear plates.

[0036] Example 2 differs from Example 1 in that:

[0037] Specifically, such as Figure 2 and Figure 4As shown, a positioning seat 11 is fixedly connected to the top of the rotating table 9. Inside the positioning seat 11, a support plate 24 and a push-pull part for adjusting the height of the support plate 24 are provided. Two sets of top supports 15 and a translation part for pushing the two sets of top supports 15 relative to each other are respectively provided on the inner and outer sides of the top of the support plate 24. Positioning strips 16 are fixedly connected to the top of each set of top supports 15. A protruding rod 17 passes through the top of the positioning seat 11. A spring 31 is fixedly connected between the bottom of the protruding rod 17 and the top of the support plate 24. Inside the positioning seat 11, two sets of pressure strips 30 and a fixing part for retracting the pressure strips 30 are provided. When the workpiece is placed above the multiple sets of protruding rods 17, the rotating component 21 drives the transmission rod 18 to rotate. The transmission rod 18 drives the two sets of screw blocks 27 to move relative to each other. The two sets of screw blocks 27 move relative to each other in conjunction with the corresponding positioning strips 16. After both sets of positioning strips 16 contact the outer side of the workpiece, The workpiece is leveled, then pushed down to lower its bottom a corresponding distance. The protrusions 17 at different positions descend to different degrees and compress the corresponding springs 31. Then, the lead screw 28 is rotated for a corresponding cycle, driving two sets of positioning bars 16. The two sets of positioning bars 16 clamp the protrusions 17 on the outside, thereby locking the posture of multiple sets of protrusions 17. The multiple sets of protrusions 17 form a contour that fits the shape of the bottom of the workpiece. Subsequent workpieces in the same batch only need to be aligned with the contour formed by the multiple sets of protrusions 17 to achieve centered and stable placement of the workpiece. Finally, the workpiece is fixed by the two sets of positioning bars 16. This method can accommodate the positioning of workpieces of different shapes on the top of the rotary table 9, while avoiding the need for centering and leveling the workpiece each time, thus improving the convenience and versatility of the three-tooth grinding head rotary table.

[0038] A method for using a three-tooth disc grinding head rotary table includes the following steps:

[0039] S1. Place the workpiece above multiple sets of protruding rods 17. Rotating component 21 drives the transmission rod 18 to rotate. The transmission rod 18 drives the two sets of screw blocks 27 to move relative to each other. The two sets of screw blocks 27 move relative to each other in conjunction with the corresponding positioning strips 16. After both sets of positioning strips 16 contact the outside of the workpiece, the workpiece is leveled.

[0040] S2. Push the workpiece down so that its bottom moves down a corresponding distance. The protrusions 17 at different positions move down to different degrees and compress the corresponding springs 31. Then rotate the lead screw 28 to rotate in the corresponding cycle, so that it drives the two sets of positioning bars 16. The two sets of positioning bars 16 hug the outside of the protrusions 17, thereby locking the posture of the multiple sets of protrusions 17. The multiple sets of protrusions 17 form a contour that fits the shape of the bottom of the workpiece. Subsequent workpieces in the same batch only need to be combined with the contour formed by the multiple sets of protrusions 17 to achieve the centering and stable placement of the workpiece. Finally, the workpiece is fixed by the two sets of positioning bars 16.

[0041] S3. First, the positioning gear plate 8 is pushed away from the central gear plate 5 by the cooperation of the first push cylinder 6 and the second push cylinder 7. The reducer 2 drives the drive wheel 3 to rotate, the drive wheel 3 drives the linkage gear plate 4, and the linkage gear plate 4 drives the rotating table 9 and the central gear plate 5 to rotate.

[0042] S4. After the reducer 2 stops running, the push cylinder 6 and the push cylinder 7 pull the positioning gear plate 8 downward. The positioning gear plate 8 achieves the positioning of the intermediate gear plate 5 by meshing with the top of the intermediate gear plate 5, thereby locking the linkage gear plate 4 and the rotating table 9. This ensures stable operation, and through the cooperation of the three gear plates, ensures the positioning and rotation accuracy of the rotating table 9.

[0043] Example 3 differs from Example 2 in that:

[0044] Specifically, such as Figure 2 and Figure 3 As shown, the fixing part includes a transmission rod 18 rotatably connected to the inner wall of the positioning seat 11. The outer wall of the transmission rod 18 is screwed into the inner wall of the two sets of pressure strips 30 through two sets of threaded grooves. A smooth rod 29 is fixedly connected to the inner wall of the positioning seat 11 and slidably connected to the two sets of pressure strips 30. The transmission rod 18 drives the two sets of screw blocks 27 to move relative to each other. The two sets of screw blocks 27 move relative to each other in conjunction with the corresponding positioning strips 16. A bushing 12 and a turntable 13 are fixedly connected to the outer wall of the positioning seat 11 and the outer wall of the transmission rod 18, respectively. A locking rod 14 is screwed into the inner wall of the turntable 13. The outer side of the bushing 12 is provided with a screw hole 19 and a screw hole 20 that fit with the locking rod 14. The screw hole 19 and the screw hole 20 correspond to the open and closed states of the pressure strips 30, respectively. The locking rod 14 is engaged with the corresponding screw hole to maintain the positional stability of the two states of the transmission rod 18. The translation part includes a support A rotating component 25 is fixedly connected to the outer wall of plate 24. A lead screw 28 is fixedly connected to the output end of rotating component 25. A screw block 27, which is fixedly connected to the bottom of top frame 15, is screwed onto the outer wall of lead screw 28. This is used to realize the relative movement of two sets of positioning bars 16. The push-pull part includes a rotating component 21 fixedly connected to the bottom of positioning seat 11. A threaded rod 23 is fixedly connected to the output end of rotating component 21. A screw sleeve 22, which is fixedly connected to the bottom of support plate 24, is screwed onto the outer wall of threaded rod 23. This is used to adjust the initial protrusion height of multiple sets of convex rods 17 to adapt to the placement requirements of different workpieces. An outer frame 26, which is fixedly connected to support plate 24, is provided on the outside of rotating component 25. The outer wall of outer frame 26 is slidably connected to the inner wall of positioning seat 11 through a vertical groove. This protects rotating component 25 while limiting the axial deflection of support plate 24 through the sliding of outer frame 26 and vertical groove.

[0045] Working principle: First, the positioning gear plate 8 is disengaged from the central rotating gear plate 5 by the cooperation of the first push cylinder 6 and the second push cylinder 7. The reducer 2 drives the drive wheel 3 to rotate, the drive wheel 3 drives the linkage gear plate 4, and the linkage gear plate 4 drives the rotating table 9 and the central rotating gear plate 5 to rotate. After the reducer 2 stops running, the first push cylinder 6 and the second push cylinder 7 pull the positioning gear plate 8 downward. The positioning gear plate 8 achieves the positioning of the central rotating gear plate 5 by meshing with the top of the central rotating gear plate 5, thereby locking the linkage gear plate 4 and the rotating table 9. This ensures stable operation. At the same time, the cooperation of the three gear plates ensures the positioning and rotation accuracy of the rotating table 9. The workpiece is placed above multiple sets of convex rods 17. The rotating part 1 21 drives the transmission rod 18 to rotate. The transmission rod 18 drives two sets of screw blocks 27 to move relative to each other. The two sets of screw blocks 27 are linked to the corresponding positioning strips 16 to move relative to each other. After all parts have made contact with the outer side of the workpiece, the workpiece is leveled. Then, the workpiece is pushed down so that its bottom moves down a corresponding distance. The protrusions 17 at different positions move down to different degrees and compress the corresponding springs 31. Then, the lead screw 28 is rotated for a corresponding cycle, which drives the two sets of positioning bars 16. The two sets of positioning bars 16 clamp the protrusions 17 on the outside, thereby locking the posture of the multiple sets of protrusions 17. The multiple sets of protrusions 17 form a contour that fits the shape of the bottom of the workpiece. Subsequent workpieces in the same batch only need to be aligned with the contour formed by the multiple sets of protrusions 17 to achieve centered and stable placement of the workpiece. Finally, the workpiece is fixed by the two sets of positioning bars 16. This can accommodate the positioning of workpieces of different shapes on the top of the rotary table 9, and also avoid the need to center and level the workpiece every time, thereby improving the convenience and versatility of the three-tooth disc grinding head rotary table.

[0046] The above description of the embodiments enables those skilled in the art to make or use the 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 the invention. Therefore, the 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 three-tooth disc grinding head rotary table, comprising a base (1) and a rotary table (9) rotatably connected to the top of the base (1), characterized in that, The base (1) is provided with a linkage gear plate (4) and a drive component for driving the linkage gear plate (4) on its inner and outer sides respectively. The inner surface wall of the base (1) is rotatably connected to a transfer gear plate (5) that meshes with the linkage gear plate (4). The top of the linkage gear plate (4) is fixedly connected to the bottom of the rotating table (9). The base (1) integrates a positioning gear plate (8) and a lifting component for lifting the positioning gear plate (8). The bottom of the positioning gear plate (8) engages with the top of the transfer gear plate (5).

2. The three-tooth disc grinding head rotary table according to claim 1, characterized in that, The top of the rotating platform (9) is fixedly connected to a positioning seat (11). The positioning seat (11) is provided with a support plate (24) and a push-pull part for adjusting the height of the support plate (24). The top inner and outer sides of the support plate (24) are respectively provided with two sets of top frames (15) and a translation part for pushing the two sets of top frames (15) to move relative to each other. The top of the two sets of top frames (15) is fixedly connected with a positioning strip (16). The top of the positioning seat (11) is provided with a protruding rod (17). The bottom of the protruding rod (17) is fixedly connected to the top of the support plate (24) with a spring (31). The positioning seat (11) is provided with two sets of pressure strips (30) and a fixing part for retracting the pressure strips (30).

3. A three-tooth disc grinding head rotary table according to claim 2, characterized in that, The fixing part includes a transmission rod (18) rotatably connected to the inner wall of the positioning seat (11). The outer wall of the transmission rod (18) is screwed to the inner wall of the two sets of pressure strips (30) through two sets of threaded grooves. The inner wall of the positioning seat (11) is fixedly connected to a smooth rod (29) slidably connected to the two sets of pressure strips (30).

4. A three-tooth disc grinding head rotary table according to claim 3, characterized in that, The outer wall of the positioning seat (11) and the outer wall of the transmission rod (18) are respectively fixedly connected to the bushing (12) and the turntable (13). The inner wall of the turntable (13) is screwed with a locking rod (14). The outer side of the bushing (12) is provided with a screw hole one (19) and a screw hole two (20) that fit with the locking rod (14).

5. A three-tooth disc grinding head rotary table according to claim 4, characterized in that, The translation part includes a rotating part two (25) fixedly connected to the outer wall of the support plate (24). The output end of the rotating part two (25) is fixedly connected to a lead screw (28). The outer wall of the lead screw (28) is screwed to a screw block (27) fixedly connected to the bottom of the top frame (15).

6. A three-tooth disc grinding head rotary table according to claim 5, characterized in that, The push-pull part includes a rotating part (21) fixedly connected to the bottom of the positioning seat (11). The output end of the rotating part (21) is fixedly connected to a threaded rod (23). The outer wall of the threaded rod (23) is screwed with a threaded sleeve (22) fixedly connected to the bottom of the support plate (24).

7. A three-tooth disc grinding head rotary table according to claim 6, characterized in that, The outer side of the rotating part (25) is provided with an outer frame (26) that is fixedly connected to the support plate (24). The outer wall of the outer frame (26) is slidably connected to the inner wall of the positioning seat (11) through a vertical groove.

8. A three-tooth disc grinding head rotary table according to claim 7, characterized in that, The lifting assembly includes a first push cylinder (6) and a second push cylinder (7) that are fixedly connected to the inner wall of the base (1). The output ends of the first push cylinder (6) and the second push cylinder (7) are fixedly connected to the bottom of the positioning gear plate (8).

9. A three-tooth disc grinding head rotary table according to claim 8, characterized in that, The drive assembly includes a reducer (2) fixedly connected to the bottom of the base (1), and a drive wheel (3) fixedly connected to the output end of the reducer (2) and meshing with the linkage gear plate (4). The outer wall of the vertical end of the rotating table (9) is rotatably connected to the inner wall of the base (1) through a bearing (10).

10. A method of using a three-tooth disc grinding head rotary table, characterized in that, Includes the following steps: S1. Place the workpiece above multiple sets of protruding rods (17), rotate the first part (21) to drive the transmission rod (18) to rotate, the transmission rod (18) drives the two sets of screw blocks (27) to move relative to each other, the two sets of screw blocks (27) move relative to each other in conjunction with the corresponding positioning strips (16), and after both sets of positioning strips (16) contact the outside of the workpiece, level the workpiece. S2. Push the workpiece down so that its bottom moves down a corresponding distance. The protrusions (17) at different positions move down to different degrees and compress the corresponding springs (31). Then rotate the screw (28) to rotate in the corresponding cycle, so that it drives the two sets of positioning bars (16). The two sets of positioning bars (16) hug the outside of the protrusions (17) to lock the posture of the multiple sets of protrusions (17). The multiple sets of protrusions (17) form a contour that fits the shape of the bottom of the workpiece. Subsequent workpieces in the same batch only need to combine the bottom with the contour formed by the multiple sets of protrusions (17) to achieve the centering and stable placement of the workpiece. Finally, the workpiece is fixed by the two sets of positioning bars (16). S3. First, the positioning gear plate (8) is pushed away from the central gear plate (5) by the cooperation of the first (6) and the second (7) of the push cylinder. The reducer (2) drives the drive wheel (3) to rotate. The drive wheel (3) drives the linkage gear plate (4). The linkage gear plate (4) drives the rotating table (9) and the central gear plate (5) to rotate. S4. After the subsequent stop of the reducer (2) operation, the push cylinder one (6) and the push cylinder two (7) pull the positioning gear plate (8) downward. The positioning gear plate (8) achieves the positioning of the intermediate gear plate (5) by meshing with the top of the intermediate gear plate (5), thereby achieving the locking of the linkage gear plate (4) and the rotating table (9). This ensures stable operation while ensuring the positioning and rotation accuracy of the rotating table (9) through the cooperation of the three gear plates.

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