Clamping tool for bearing space ring machining
By designing a clamping fixture that includes a tooling table, a tooling plate, a large-diameter ring, and an expansion rod, the problem that the outer ring of the spacer cannot be fully exposed in the existing technology is solved, and the outer ring of the spacer can be fully polished in one clamping, thus improving the polishing efficiency.
Patent Information
- Application Number
- CN202423313966.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing bearing spacer machining fixtures cannot fully expose the outer ring during clamping, resulting in multiple changes to the fixture position and reduced grinding efficiency.
Design a clamping fixture, including a fixture table, a fixture plate, a large-diameter ring, a hollow fixture shaft, and an expansion rod. By radially moving the expansion rod, the arc-shaped plate is squeezed, causing the inner ring of the spacer to be pressed tightly, thus achieving full clamping and grinding of the completely exposed outer ring in one go.
It achieves a fully exposed outer ring, enabling complete grinding in a single setup, thus improving grinding efficiency.
Smart Images
Figure CN223762963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing spacer processing technology, specifically a clamping fixture for bearing spacer processing. Background Technology
[0002] Bearings are essential components in modern machinery. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during movement, and ensure rotational accuracy. Spacers are a component within bearings, primarily used to maintain a specified axial distance between two bearing races or washers. In bearing production, the outer ring of the spacer needs to be ground to improve fit accuracy. Most existing tooling mechanisms use clamping to mount the spacer, which prevents the outer ring from being fully exposed. This clamping position causes obstruction, requiring multiple changes to the tooling position to complete the full grinding of the spacer's outer ring, thus reducing grinding efficiency. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a clamping fixture for machining bearing spacers. This fixture can be used to machine the spacers with the outer ring fully exposed, and can complete the grinding of the outer ring in one clamping, thus improving grinding efficiency.
[0004] The purpose of this utility model is achieved through the following technical solution: a clamping fixture for machining bearing spacers, comprising a fixture table, a fixture plate fixed on the fixture table, a large-diameter ring rotatably disposed on the fixture plate, a hollow fixture shaft disposed inside the large-diameter ring, the hollow fixture shaft comprising multiple separately disposed arc-shaped plates, the arc-shaped plates moving radially along the large-diameter ring, an expansion rod slidably disposed on the fixture table, one end of the expansion rod penetrating the inner hole of the hollow fixture shaft, the expansion rod having the freedom to move axially along the hollow fixture shaft, and the diameter of the expansion rod gradually increasing in the direction away from the hollow fixture shaft.
[0005] Furthermore, the outer ring of the arc-shaped plate is connected to a telescopic rod, and the end of the telescopic rod away from the arc-shaped plate is connected to the inner ring of the large-diameter ring. A spring is sleeved on the telescopic rod. When the spring is in its normal state, multiple arc-shaped plates contact each other in sequence to form the complete hollow tooling shaft.
[0006] Furthermore, the telescopic rod includes rod one and rod two. One end of rod one is connected to the arc-shaped plate, and the other end is slidably connected to rod two. The end of rod two away from rod one is connected to the large-diameter ring.
[0007] Furthermore, the tooling plate is provided with a small diameter hole and a large diameter hole in sequence along the axial direction of the hollow tooling shaft. The large diameter ring is rotatably installed in the large diameter hole, and the expansion rod passes through the small diameter hole and enters the inner hole of the hollow tooling shaft.
[0008] Furthermore, an abutment plate is fixed to one end of the expansion rod away from the hollow tooling shaft, and a return spring is sleeved on the expansion rod. The two ends of the return spring are respectively connected to the abutment plate and the rotating ring, and the rotating ring is rotatably connected to the tooling plate.
[0009] Furthermore, a cylinder is mounted on the tooling table, and the expansion rod is located on the moving path of the cylinder's telescopic shaft.
[0010] Furthermore, a bearing is fitted onto the large-diameter ring, and the outer ring of the bearing is installed inside the large-diameter hole.
[0011] Furthermore, a driven pulley is fixedly sleeved on the large-diameter ring, a motor is mounted on the tooling plate, the output shaft of the motor is connected to a driving pulley, and the driving pulley is connected to the driven pulley via belt drive.
[0012] The beneficial effects of this utility model are:
[0013] The spacer ring is placed on the hollow tooling shaft, and then the expansion rod is moved close to the hollow tooling shaft, so that the large diameter of the expansion rod gradually moves into the hollow tooling shaft, thereby squeezing the arc plate to move, so that the arc plate presses against the inner ring of the spacer ring, so that the spacer ring is tooled on the hollow tooling shaft, and the outer ring of the spacer ring is in a fully exposed state. The outer ring can be fully polished in one clamping, which improves the polishing efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the clamping fixture for machining bearing spacers according to the present invention. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of the clamping fixture for machining bearing spacers according to the present invention. Figure 2 ;
[0016] Figure 3 This is a schematic diagram of the clamping fixture for machining bearing spacers according to the present invention. Figure 3 ;
[0017] In the diagram, 1-tooling table, 2-tooling plate, 3-large diameter ring, 4-arc plate, 5-expansion rod, 6-spring, 7-rod one, 8-rod two, 9-small diameter hole, 10-large diameter hole, 11-abutment plate, 12-reset spring, 13-cylinder, 14-bearing, 15-driven pulley, 16-motor, 17-drive pulley, 18-belt, 19-rotating ring. Detailed Implementation
[0018] like Figures 1 to 3As shown, a clamping fixture for machining bearing spacers includes a fixture table 1, a fixture plate 2 fixed on the fixture table 1, a large-diameter ring 3 rotatably mounted on the fixture plate 2, a hollow fixture shaft disposed inside the large-diameter ring 3, the hollow fixture shaft comprising multiple separately arranged arc-shaped plates 4, the arc-shaped plates 4 moving radially along the large-diameter ring 3, an expansion rod 5 slidably mounted on the fixture plate 2, one end of the expansion rod 5 penetrating the inner hole of the hollow fixture shaft, the expansion rod 5 having the freedom to move axially along the hollow fixture shaft, and the diameter of the expansion rod 5 along the far-diameter ring 3. As the diameter of the expansion rod 5 gradually increases away from the hollow tooling shaft, the spacer is placed on the hollow tooling shaft. Then, the expansion rod 5 is moved closer to the hollow tooling shaft. Since the diameter of the expansion rod 5 gradually increases away from the hollow tooling shaft, the large diameter of the expansion rod 5 gradually moves into the hollow tooling shaft, thereby squeezing multiple arc plates 4 to move. The arc plates 4 press against the inner ring of the spacer, so that the spacer is tooled on the hollow tooling shaft, and the outer ring of the spacer is fully exposed. The outer ring can be fully polished in one clamping, which improves the polishing efficiency.
[0019] Furthermore, such as Figure 1 and Figure 2 As shown, the outer ring of the arc plate 4 is connected to a telescopic rod. The end of the telescopic rod away from the arc plate 4 is connected to the inner ring of the large diameter ring 3. A spring 6 is fitted on the telescopic rod. When the spring 6 is in its normal state, multiple arc plates 4 contact each other in sequence to form a complete hollow tooling shaft. The telescopic rod includes rod 1 7 and rod 2 8. One end of rod 1 7 is connected to the arc plate 4, and the other end slides through rod 2 8. The end of rod 2 8 away from rod 1 7 is connected to the large diameter ring 3. The telescopic rod allows the arc plate 4 to have the freedom to move radially along the large diameter ring 3. When the expansion rod 5 squeezes the arc plate 4 to move, it will compress the spring 6. After the spacer is processed, the expansion rod 5 resets, and the arc plate 4 resets under the reaction force of the spring 6, so that the spacer can be removed, making the tooling of the spacer simple and quick.
[0020] Furthermore, such as Figures 1 to 3 As shown, the tooling plate 2 has a small-diameter hole 9 and a large-diameter hole 10 sequentially opened along the axial direction of the hollow tooling shaft. The large-diameter ring 3 is rotatably installed in the large-diameter hole 10. The expansion rod 5 passes through the small-diameter hole 9 and enters the inner hole of the hollow tooling shaft. The end of the expansion rod 5 away from the hollow tooling shaft is fixed with an abutment plate 11. A return spring 12 is sleeved on the expansion rod 5. The two ends of the return spring 12 are respectively connected to the tooling plate 2 and the abutment plate 11. A cylinder 13 is installed on the tooling table 1. The expansion rod 5 is located on the telescopic shaft of the cylinder 13. During the movement of the tooling, the cylinder 13 extends, causing the cylinder 13 to act on the abutment plate 11 to push the expansion rod 5 into the hollow tooling shaft, thereby causing the arc plate 4 to move and press against the spacer. During the movement, the expansion rod 5 compresses the return spring 12. When the spacer is finished and needs to be removed, the cylinder 13 retracts and resets, the expansion rod 5 resets under the reaction force of the return spring 12, and the arc plate 4 resets under the reaction force of the spring 6. Finally, the spacer is removed from the hollow tooling shaft.
[0021] Furthermore, such as Figure 2 As shown, a bearing 14 is fitted onto the large-diameter ring 3. The outer ring of the bearing 14 is installed inside the large-diameter hole 10. The large-diameter ring 3 is rotatably mounted on the tooling plate 1 via the bearing 14. A driven pulley 15 is fixedly fitted onto the large-diameter ring 3. A motor 16 is mounted on the tooling plate 2. The output shaft of the motor 16 is connected to a drive pulley 17. The drive pulley 17 is connected to the driven pulley 15 via a belt 18. The motor 16 drives the drive pulley 17 to rotate, and the drive pulley 17 drives the driven pulley 15 to rotate via the belt 18. Driven pulley 17 drives large diameter ring 3 to rotate, and large diameter ring 3 drives hollow tooling shaft and spacer ring on it to rotate to complete the grinding operation. Since expansion rod 5 is pressed against the inner hole of hollow tooling shaft, expansion rod 5 will rotate together to avoid interference. In order to reduce the wear between abutting plate 11 and cylinder 13 telescopic shaft, ball bearings are provided at the contact position between abutting plate 11 and cylinder 13. The telescopic shaft of cylinder 13 abuts against the ball bearings to push expansion rod 5 to move, thereby reducing the friction between abutting plate 11 and cylinder 13.
Claims
1. A clamping tool for machining of bearing spacer ring, comprising a tool table (1), characterized in that, The tooling table (1) is fixed with a tooling plate (2), the tooling plate (2) is rotationally provided with a large-diameter ring (3), the large-diameter ring (3) is provided with a hollow tooling shaft, the hollow tooling shaft comprises a plurality of arc-shaped plates (4) arranged in sections, the arc-shaped plates (4) move along the radial direction of the large-diameter ring (3), the tooling plate (2) is slidingly provided with an expansion rod (5), one end of the expansion rod (5) penetrates into the inner hole of the hollow tooling shaft, the expansion rod (5) has the freedom of moving along the axial direction of the hollow tooling shaft, and the diameter of the expansion rod (5) gradually increases in the direction away from the hollow tooling shaft.
2. The clamping tool for machining a bearing spacer ring according to claim 1, characterized in that The outer ring of the arc-shaped plate (4) is connected with a telescopic rod, one end of the telescopic rod away from the arc-shaped plate (4) is connected with the inner ring of the large-diameter ring (3), and a spring (6) is sleeved on the telescopic rod; when the spring (6) is in a normal state, the plurality of arc-shaped plates (4) are sequentially contacted to form a complete hollow tooling shaft.
3. The clamping tool for machining a bearing spacer ring according to claim 2, characterized in that The telescopic rod comprises a rod one (7) and a rod two (8), one end of the rod one (7) is connected with the arc-shaped plate (4), the other end of the rod one (7) is slidingly provided with the rod two (8), and one end of the rod two (8) away from the rod one (7) is connected with the large-diameter ring (3).
4. The clamping tool for machining a bearing spacer ring according to claim 1, characterized in that, The tooling plate (2) is sequentially provided with a small-diameter hole (9) and a large-diameter hole (10) in the axial direction of the hollow tooling shaft, the large-diameter ring (3) is rotationally installed in the large-diameter hole (10), and the expansion rod (5) penetrates into the inner hole of the hollow tooling shaft through the small-diameter hole (9).
5. The clamping tool for machining a bearing spacer ring according to claim 4, characterized in that One end of the expansion rod (5) away from the hollow tooling shaft is fixed with an abutting plate (11), a reset spring (12) is sleeved on the expansion rod (5), both ends of the reset spring (12) are connected with the abutting plate (11) and a rotating ring (19) respectively, and the rotating ring (19) is rotationally connected with the tooling plate (2).
6. The clamping tool for machining a bearing spacer ring according to claim 5, characterized in that A pneumatic cylinder (13) is installed on the tooling table (1), and the expansion rod (5) is located on the movement path of the telescopic shaft of the pneumatic cylinder (13).
7. The clamping tool for machining of bearing spacer ring according to claim 4, characterized in that, A bearing (14) is sleeved on the large-diameter ring (3), and the outer ring of the bearing (14) is installed in the large-diameter hole (10).
8. The clamping tool for machining of bearing spacer ring according to claim 1, characterized in that, A driven pulley (15) is fixedly sleeved on the large-diameter ring (3), a motor (16) is installed on the tooling plate (2), an output shaft of the motor (16) is connected with a driving pulley (17), and the driving pulley (17) is drivingly connected with the driven pulley (15) through a belt (18).