A device for polishing the inner diameter of a flower drum

Abstract

The utility model discloses a kind of flower drum inner diameter polishing devices, including base, fixed mounting is positioned in the top end of base axle seat, the movable axle seat is separately provided in the top end of base along the central axis direction of positioning axle seat, both sides of positioning axle seat and movable axle seat inside are rotatably installed with receiving ring, receiving ring axis and positioning axle seat axis coincide, receiving ring one end located in the inside of positioning axle seat is installed with the rotating mechanism that can drive its rotation, two sides receiving ring adjacent one end are all fixedly connected with resist ring, two resist rings are oppositely arranged and are commonly clamped and fixed with the flower drum to be processed, moving mechanism is equipped in the top end of base, polishing column is equipped on moving mechanism, polishing column axis and the axis of the flower drum to be processed are parallel, the device realizes the accurate positioning and stable rotation of flower drum, and by polishing column high-speed rotation, cooperate with the rotation of the flower drum to be processed itself, form "double rotation" polishing mode, both improve polishing efficiency, and ensure the polishing uniformity and precision of flower drum inner diameter surface.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts processing technology, and in particular to a hub inner diameter grinding device. Background Technology

[0002] The hub is a core component of a bicycle wheelset, connecting the spokes and the axle. The dimensional accuracy and surface smoothness of its inner diameter directly affect the smoothness of the wheelset's rotation and riding safety. Therefore, inner diameter grinding is a crucial step in hub manufacturing. However, existing hub inner diameter grinding devices have significant shortcomings: some devices still rely on manually clamping the hub to fix the workpiece. Manual operation makes it difficult to accurately ensure the coaxiality of the hub and grinding components, and misalignment during clamping can easily lead to uneven grinding, resulting in uneven inner diameter wall thickness. Furthermore, to cover the entire inner diameter range, repeated manual adjustments to the grinding position are required, significantly increasing operation time, severely limiting processing efficiency, and making it difficult to meet the demands of mass production.

[0003] Therefore, those skilled in the art have provided a device for grinding the inner diameter of a hub to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for grinding the inner diameter of a flower drum.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hub inner diameter grinding device includes a base, a positioning shaft seat is fixedly installed on the top of the base, and a movable shaft seat is provided at intervals from the positioning shaft seat along the central axis of the positioning shaft seat at the top of the base, and the central axes of the positioning shaft seat and the movable shaft seat are collinear.

[0007] Both the positioning shaft seat and the movable shaft seat are rotatably mounted with receiving rings on their inner sides. The central axis of the receiving rings coincides with the central axis of the positioning shaft seat. The end of the receiving ring located inside the positioning shaft seat away from the movable shaft seat is equipped with a rotating mechanism that can drive it to rotate around its own central axis.

[0008] Each of the two receiving rings has a stop ring fixedly connected to one of its adjacent ends. The two stop rings are arranged opposite each other and together clamp and fix the flower drum to be processed.

[0009] The base is provided with a moving mechanism at the top, and a grinding column is provided on the moving mechanism. The central axis of the grinding column is parallel to the central axis of the drum to be processed. The end of the grinding column away from the moving mechanism can extend into the inside of the drum to be processed and can fit against the inner wall of the drum to be processed.

[0010] Preferably, the inner diameter of the two abutment rings is adapted to the outer diameter of the end of the drum to be processed, and the two abutment rings are respectively slidably sleeved on the outer sides of both ends of the drum to be processed, and respectively abut against the spoke discs at both ends of the drum to be processed;

[0011] The abutment ring has at least one protrusion on its end face near the spoke disc, and the protrusion can be inserted into the corresponding spoke hole on the spoke disc.

[0012] Preferably, connecting blocks are integrally formed on both symmetrical sides of the outer wall of the abutment ring, and the connecting blocks are fixed to the end of the receiving ring by screws.

[0013] Preferably, the movable shaft seat is slidably connected to the top of the base, and a push-pull cylinder is horizontally installed on the side of the top of the base near the movable shaft seat away from the positioning shaft seat, and the free end of the output shaft of the push-pull cylinder is fixedly connected to the side of the movable shaft seat away from the positioning shaft seat.

[0014] Preferably, the rotating mechanism includes a driven sprocket fixedly sleeved on one end of the outer side of the receiving ring, a mounting seat is vertically mounted on the top of the base, a geared motor is mounted on one side of the mounting seat, the free end of the output shaft of the geared motor movably passes through the mounting seat and is fixedly connected to a driving sprocket, and the driven sprocket and the driving sprocket are connected by a synchronous chain belt drive.

[0015] Preferably, the moving mechanism includes an X-axis module disposed at the top of the base, a slide is drivenly mounted on the top of the X-axis module, and the X-axis module can drive the slide to reciprocate along the X-axis direction;

[0016] A lifting cylinder is vertically mounted on the top of the slide block. An L-shaped seat is fixedly connected to the free end of the output shaft at the top of the lifting cylinder. A rotary motor is mounted on the side of the L-shaped seat. The free end of the output shaft of the rotary motor moves through the side of the L-shaped seat and is fixedly connected to a connecting shaft. The end of the connecting shaft away from the L-shaped seat is fixedly connected to the end of the grinding column.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The movable shaft seat is driven to slide by a push-pull cylinder, which, together with the abutment ring and the protrusion, achieves automated and precise clamping of the hub, ensuring the coaxiality of the hub and the grinding assembly and avoiding uneven inner diameter wall thickness caused by manual clamping offset. At the same time, the X-axis module can automatically control the insertion depth of the grinding column according to the hub length, and the lifting cylinder can dynamically fine-tune the height of the grinding column to fit the inner wall. With the dual-rotation grinding mode, there is no need for repeated manual adjustment of the grinding position, which not only significantly improves the grinding accuracy and surface uniformity of the hub inner diameter, but also greatly shortens the operation time, improves processing efficiency, and adapts to the needs of mass production. Attached Figure Description

[0019] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the drum inner diameter grinding device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the installation structure of the hub to be processed according to this utility model;

[0022] Figure 3 This is a schematic diagram of the anti-ring installation structure proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the installation structure of the rotating mechanism proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the moving mechanism structure proposed in this utility model.

[0025] In the diagram: 1. Base; 2. Positioning shaft seat; 3. Movable shaft seat; 4. Receiving ring; 5. Abutment ring; 6. Hub to be processed; 7. X-axis module; 8. Slide seat; 9. Lifting cylinder; 10. L-shaped seat; 11. Rotary motor; 12. Connecting shaft; 13. Grinding column; 14. Connecting block; 15. Protruding column; 16. Driven sprocket; 17. Mounting seat; 18. Gear motor; 19. Drive sprocket; 20. Synchronous chain belt; 21. Push-pull cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figure 1-5 A device for grinding the inner diameter of a flower drum includes a base 1, a positioning shaft seat 2 is fixedly installed on the top of the base 1, and a movable shaft seat 3 is provided at intervals from the positioning shaft seat 2 along the central axis of the top of the base 1, and the central axes of the positioning shaft seat 2 and the movable shaft seat 3 are collinear.

[0028] Both the positioning shaft seat 2 and the movable shaft seat 3 are rotatably mounted with a receiving ring 4. The central axis of the receiving ring 4 coincides with the central axis of the positioning shaft seat 2. The end of the receiving ring 4 located inside the positioning shaft seat 2 away from the movable shaft seat 3 is equipped with a rotating mechanism that can drive it to rotate around its own central axis.

[0029] Two receiving rings 4 are each fixedly connected to abutment rings 5 ​​at one of their adjacent ends. The two abutment rings 5 ​​are arranged opposite each other and together clamp and fix the flower drum 6 to be processed.

[0030] The base 1 has a moving mechanism at the top, and a grinding column 13 is provided on the moving mechanism. The central axis of the grinding column 13 is parallel to the central axis of the hub 6 to be processed. The end of the grinding column 13 away from the moving mechanism can extend into the inner side of the hub 6 to be processed and can fit against the inner wall of the hub 6 to be processed.

[0031] Using the above technical solution, the positioning shaft seat 2 and the movable shaft seat 3 are set coaxially, and with the inner rotating mounting ring 4, it is ensured that the hub 6 to be processed always maintains axial stability after being clamped by the two abutment rings 5; when the rotating mechanism drives the inner mounting ring 4 of the positioning shaft seat 2 to rotate, it can drive the hub 6 to be processed to rotate synchronously and smoothly; the grinding column 13 mounted on the moving mechanism is parallel to the axis of the hub 6 to be processed, and can accurately extend into the inner side of the hub and fit against the inner wall, which solves the problems of large positioning deviation and low grinding efficiency of traditional grinding devices, and is suitable for batch grinding processing of hubs with different inner diameters.

[0032] The inner diameter of the two abutment rings 5 ​​is adapted to the outer diameter of the end of the hub 6 to be processed, and the two abutment rings 5 ​​are respectively slidably sleeved on the outer sides of both ends of the hub 6 to be processed, and respectively abut against the spoke discs at both ends of the hub 6 to be processed;

[0033] The abutment ring 5 has at least one protrusion 15 on its end face near the spoke disc, and the protrusion 15 can be inserted into the inner side of the corresponding spoke hole on the spoke disc.

[0034] Using the above technical solution, the inner diameter of the abutment ring 5 is adapted to the outer diameter of the end of the hub 6 to be processed. After sliding and fitting, it can fit tightly against the outer wall of the hub and at the same time abut against the spoke discs at both ends of the hub to form an axial limit. The protrusion 15 on the end face of the abutment ring 5 is inserted into the corresponding spoke hole of the spoke disc, which can effectively prevent the hub 6 to be processed from slipping relatively during the rotation and grinding process, and ensure that the grinding trajectory is uniform.

[0035] Both sides of the outer wall of the abutment ring 5 are integrally formed with connecting blocks 14, and the connecting blocks 14 are fixed to the end of the receiving ring 4 by screws.

[0036] By adopting the above technical solution, the integrally formed connecting block 14 symmetrically arranged on the outer wall of the abutment ring 5 is fixed to the end of the receiving ring 4 with screws, which facilitates the subsequent disassembly and replacement of the abutment ring 5. The abutment ring 5 can be quickly replaced according to the specifications of the hub 6 to be processed, thereby improving the versatility of the device.

[0037] The movable shaft seat 3 is slidably connected to the top of the base 1. A push-pull cylinder 21 is horizontally installed on the side of the top of the base 1 near the movable shaft seat 3 away from the positioning shaft seat 2. The free end of the output shaft of the push-pull cylinder 21 is fixedly connected to the side of the movable shaft seat 3 away from the positioning shaft seat 2.

[0038] Using the above technical solution, the movable shaft seat 3 can slide along the base 1. With the extension and retraction of the output shaft of the push-pull cylinder 21, the distance between the positioning shaft seat 2 and the movable shaft seat 3 can be flexibly adjusted to adapt to the different length specifications of the hub 6 to be processed.

[0039] The rotating mechanism includes a driven sprocket 16 fixedly sleeved on one end of the outer side of the receiving ring 4, a mounting seat 17 vertically mounted on the top of the base 1, a geared motor 18 mounted on one side of the mounting seat 17, the free end of the output shaft of the geared motor 18 movably passes through the mounting seat 17 and is fixedly connected to a driving sprocket 19, and the driven sprocket 16 and the driving sprocket 19 are connected by a synchronous chain belt 20.

[0040] Using the above technical solution, the geared motor 18 is fixed to the base 1 by the mounting seat 17. Its output shaft drives the drive sprocket 19 to rotate, and then transmits the power precisely to the driven sprocket 16 through the synchronous chain belt 20, which finally drives the receiving ring 4 and the hub 6 to be processed to rotate synchronously. The synchronous chain belt 20 and the sprocket have high transmission efficiency and strong anti-slip ability, which can avoid the jerking in the power transmission process. At the same time, the geared motor 18 can flexibly adjust the output speed to adapt to the grinding needs of hubs 6 of different materials.

[0041] The moving mechanism includes an X-axis module 7 disposed at the top of the base 1, a slide 8 is mounted on the top of the X-axis module 7, and the X-axis module 7 can drive the slide 8 to reciprocate along the X-axis direction.

[0042] A lifting cylinder 9 is vertically mounted on the top of the slide block 8. An L-shaped seat 10 is fixedly connected to the free end of the output shaft at the top of the lifting cylinder 9. A rotary motor 11 is mounted on the side of the L-shaped seat 10. The free end of the output shaft of the rotary motor 11 moves through the side of the L-shaped seat 10 and is fixedly connected to a connecting shaft 12. The end of the connecting shaft 12 away from the L-shaped seat 10 is fixedly connected to the end of the grinding column 13.

[0043] Using the above technical solutions, the X-axis module 7 can drive the slide 8 to reciprocate along the X-axis direction, causing the grinding column 13 to move synchronously. It can flexibly control the depth of the grinding column 13 into the inner side of the hub 6 according to different length specifications, ensuring that the grinding can cover the entire length of the inner diameter of the hub. The lifting cylinder 9 can not only drive the grinding column 13 to rise and fall through the L-shaped seat 10 to help it accurately align with the inner diameter entrance of the hub 6 for smooth insertion, but also continue to adjust the height position of the grinding column 13 after insertion, so that the outer wall of the grinding column 13 fits tightly with the inner wall of the hub. At the same time, the rotary motor 11 drives the grinding column 13 to rotate at high speed through the connecting shaft 12, which, together with the rotation of the hub 6 itself, forms a "dual rotation" grinding mode, which not only improves the grinding efficiency, but also ensures the uniformity and precision of the grinding of the inner diameter surface of the hub.

[0044] Working principle:

[0045] First, the hub 6 to be processed is placed between the positioning shaft seat 2 and the movable shaft seat 3. The movable shaft seat 3 is pushed to slide by the push-pull cylinder 21, so that the abutment rings 5 ​​on the two receiving rings 4 clamp the hub, and the protrusions 15 of the abutment rings 5 ​​are inserted into the spoke disc holes of the hub to prevent slippage. Then, the reduction motor 18 drives the receiving rings 4 on the side of the positioning shaft seat 2 to rotate through the drive sprocket 19, the synchronous chain belt 20, and the driven sprocket 16, so that the hub rotates synchronously. Next, the X-axis module 7 drives the slide 8 to move, and the lifting cylinder 9 adjusts the height of the grinding column 13 to align with the inner diameter inlet of the hub and inserts it. After insertion, the height is further finely adjusted so that the grinding column 13 fits against the inner wall of the hub. Finally, the rotary motor 11 drives the grinding column 13 to rotate at high speed through the connecting shaft 12. At the same time, the X-axis module 7 controls the insertion depth of the grinding column 13 to achieve uniform grinding of the entire length of the inner diameter of the hub.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for grinding the inner diameter of a flower drum, comprising a base (1), characterized in that, The top of the base (1) is fixedly installed with a positioning shaft seat (2). Along the central axis of the positioning shaft seat (2), the top of the base (1) is provided with a movable shaft seat (3) spaced apart from the positioning shaft seat (2), and the central axes of the positioning shaft seat (2) and the movable shaft seat (3) are collinear. Both the positioning shaft seat (2) and the movable shaft seat (3) are rotatably mounted with a receiving ring (4). The central axis of the receiving ring (4) coincides with the central axis of the positioning shaft seat (2). The end of the receiving ring (4) located inside the positioning shaft seat (2) away from the movable shaft seat (3) is equipped with a rotating mechanism that can drive it to rotate around its own central axis. Each of the two receiving rings (4) is fixedly connected to an abutment ring (5) at one of its adjacent ends. The two abutment rings (5) are arranged opposite to each other and together clamp and fix the flower drum (6) to be processed. The base (1) is provided with a moving mechanism at the top, and a grinding column (13) is provided on the moving mechanism. The central axis of the grinding column (13) is parallel to the central axis of the hub (6) to be processed. The end of the grinding column (13) away from the moving mechanism can extend into the inner side of the hub (6) to be processed and can fit against the inner wall of the hub (6) to be processed.

2. The device for grinding the inner diameter of a flower drum according to claim 1, characterized in that, The inner diameter of the two abutment rings (5) is adapted to the outer diameter of the end of the hub (6) to be processed, and the two abutment rings (5) are respectively slidably sleeved on the outer sides of the two ends of the hub (6) to be processed, and respectively abut against the spoke discs at both ends of the hub (6); The abutment ring (5) has at least one protrusion (15) on the end face near the spoke disc, and the protrusion (15) can be inserted into the inner side of the corresponding spoke hole on the spoke disc.

3. The hub inner diameter grinding device according to claim 2, characterized in that, The outer walls of the abutment ring (5) are integrally formed with connecting blocks (14) on both sides, and the connecting blocks (14) are fixed to the end of the receiving ring (4) by screws.

4. The device for grinding the inner diameter of a hub according to claim 1, characterized in that, The movable shaft seat (3) is slidably connected to the top of the base (1). The top of the base (1) is horizontally mounted on the side of the movable shaft seat (3) away from the positioning shaft seat (2). The free end of the output shaft of the push-pull cylinder (21) is fixedly connected to the side of the movable shaft seat (3) away from the positioning shaft seat (2).

5. The hub inner diameter grinding device according to claim 1, characterized in that, The rotating mechanism includes a driven sprocket (16) fixedly sleeved on one side of the receiving ring (4), a mounting seat (17) vertically mounted on the top of the base (1), a geared motor (18) mounted on one side of the mounting seat (17), the free end of the output shaft of the geared motor (18) movably passes through the mounting seat (17) and is fixedly connected to a driving sprocket (19), and the driven sprocket (16) and the driving sprocket (19) are connected by a synchronous chain belt (20).

6. The hub inner diameter grinding device according to claim 1, characterized in that, The moving mechanism includes an X-axis module (7) disposed at the top of the base (1), and a slide (8) is drivenly mounted on the top of the X-axis module (7), and the X-axis module (7) can drive the slide (8) to reciprocate along the X-axis direction; A lifting cylinder (9) is vertically installed at the top of the slide (8). An L-shaped seat (10) is fixedly connected to the free end of the output shaft at the top of the lifting cylinder (9). A rotary motor (11) is installed on the side of the L-shaped seat (10). The free end of the output shaft of the rotary motor (11) moves through the side of the L-shaped seat (10) and is fixedly connected to a connecting shaft (12). The end of the connecting shaft (12) away from the L-shaped seat (10) is fixedly connected to the end of the grinding column (13).

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