Bearing concentricity accurate calibration equipment

Abstract

The utility model relates to the technical field of shaft body machining, and discloses a bearing concentricity accurate calibration device which comprises a base, the rear side of the base is fixedly connected with a supporting rod, the inner side of the supporting rod is rotationally connected with a threaded rod, the outer side of the threaded rod is in threaded connection with a lifting plate, and the top of the lifting plate is fixedly connected with a motor. And the output end of the motor penetrates through the lifting plate and is fixedly connected with a hollow block, the inner side of the hollow block is rotationally connected with a gear, and the front side and the rear side of the inner wall of the hollow block are both slidably connected with racks. According to the utility model, the two-way screw rod is in threaded connection to drive the hollow plate and the rotating cover to fix the bearing outer ring, then the threaded rod is rotated to drive the hollow block to move to the bearing inner ring, and the motor is started to drive the gear to rotate by centrifugal force to push the rack to be fixed with the rubber plate and rotate the inner ring; after the inner ring and the outer ring are fixed, the inner ring can drive the balls to rotate, calibration can be conducted, and the balls are prevented from being clamped.

Description

Technical Field

[0001] This utility model relates to the field of shaft machining technology, and in particular to a bearing concentricity precision calibration device. Background Technology

[0002] A bearing is a mechanical component consisting of an inner ring, an outer ring, rolling elements, and a cage, used to support a shaft. Its main function is to reduce friction during shaft rotation and to withstand radial and axial loads. When a bearing's concentricity shifts due to long-term use or impacts, it can severely affect the bearing's accuracy. To facilitate the correction of misaligned bearings, a bearing concentricity precision calibration device is needed.

[0003] A bearing concentricity precision calibration device is a specialized device used to ensure that the concentricity of the inner ring, outer ring, and rotating components of a bearing meets high precision requirements. Its working principle is to obtain circumferential position data by measuring multiple points on the inner and outer rings of the bearing, and to derive the deviation angle based on the measurement data, so that the bearing can be adjusted using tools.

[0004] Currently available bearing concentricity calibration equipment works by fitting the bearing center inside a truncated cone and then extending and retracting telescopic rods around the bearing to fix it in place. If the bearing center point deviates, the corresponding telescopic rods can be extended and retracted to apply pressure and correct the center point according to the bearing's offset direction. However, in actual use, this method requires manual adjustment of the telescopic rods to clamp or apply pressure to the bearing. This method applies pressure to the bearing and causes it to deform. Furthermore, since the bearing cannot rotate during the adjustment process, the inner balls may become stuck between the inner and outer rings due to deformation after adjustment, thus reducing the reliability of the device. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a bearing concentricity precision calibration device, which aims to improve the problem in the prior art where the ball bearing gets stuck after adjustment due to the pressure of the telescopic rod and the inability of the bearing to rotate during the adjustment process of the concentricity calibration device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a bearing concentricity precision calibration device, comprising a base, a support rod fixedly connected to the rear side of the base, a threaded rod rotatably connected to the inner side of the support rod, a lifting plate threadedly connected to the outer side of the threaded rod, a motor fixedly connected to the top of the lifting plate, the output end of the motor passing through the lifting plate and fixedly connected to a hollow block, a gear rotatably connected to the inner side of the hollow block, a rack slidably connected to both the front and rear sides of the inner wall of the hollow block, the rack meshing with the gear, a telescopic sleeve fixedly connected to the outer side of the rack, a rubber plate fixedly connected to the outer side of the telescopic sleeve, a bidirectional lead screw rotatably connected to the inner side of the base, a hollow plate threadedly connected to both the front and rear sides of the outer wall of the bidirectional lead screw, a rotating cover provided on the outer side of the hollow plate, and an auxiliary mechanism provided on the outer side of the rotating cover, the auxiliary mechanism being used to improve the bearing calibration effect.

[0007] As a further description of the above technical solution:

[0008] The auxiliary mechanism includes multiple push plates, which are respectively disposed on the left and right sides of the outer wall of the rotating cover. A hinge is fixedly connected to the outer side of each push plate, and the push plate is rotatably connected to the rotating cover through the hinge. Fixing blocks are fixedly connected to the top left and right sides of the rotating cover and the top center of each push plate. Springs are fixedly connected between each fixing block. Rollers are rotatably connected to the inner sides of the rotating cover and the push plates.

[0009] As a further description of the above technical solution:

[0010] The top of the support rod is rotatably connected to a handle, the bottom of the handle passes through the support rod and is fixedly connected to the threaded rod, and the inner wall of the support rod is provided with sliding grooves on both the front and rear sides, and the outer side of the lifting plate is slidably connected to the sliding grooves.

[0011] As a further description of the above technical solution:

[0012] The support rod has brackets fixedly connected to both the front and rear sides of its outer wall, and the outer side of each bracket is fixedly connected to the base.

[0013] As a further description of the above technical solution:

[0014] Positioning blocks are fixedly connected to the bottom of the outer wall of the base, and positioning holes are provided on the outer side of the positioning blocks.

[0015] As a further description of the above technical solution:

[0016] A cross rod is rotatably connected to the bottom of the inner wall of the base. Rotating wheels are rotatably connected to the upper and lower sides of the inner wall of the hollow plate. The inner side of the lower rotating wheel is slidably connected to the cross rod. A belt is provided on the outer side of the rotating wheel. Multiple rotating wheels are connected to each other through the belt drive. The outer side of the upper rotating wheel passes through the hollow plate and is fixedly connected to the rotating cover.

[0017] As a further description of the above technical solution:

[0018] The front end of the base is rotatably connected to both the upper and lower sides. The rear side of the upper knob passes through the base and is fixedly connected to the bidirectional lead screw, while the rear side of the lower knob passes through the base and is fixedly connected to the cross rod.

[0019] As a further description of the above technical solution:

[0020] A controller is fixedly connected to the rear side of the base, and the controller is electrically connected to the motor.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by placing the bearing inside the rotating cover and rotating the bidirectional lead screw, the hollow plate and rotating cover can be moved and fixed to the outer ring through the threaded connection. Then, rotating the threaded rod drives the lifting plate to move and place the hollow block inside the bearing. Subsequently, the motor is started to rotate the gear through centrifugal force, which pushes the rack and the rubber plate on the telescopic sleeve to move and fix the inner ring and drive it to rotate. After the inner and outer rings are fixed, rotating the inner ring can drive the ball to keep rotating, which can be calibrated and prevent the ball from being stuck due to deformation, thereby improving the reliability of the device.

[0023] 2. In this utility model, the fixed block is moved by the extension and retraction of the spring, which can drive the push plate on the outside of the rotating cover to rotate along the rotating cover through the hinge, so that it can fit against the outer ring of bearings of different sizes for auxiliary fixation. After fixation, when the inner roller rotates for repositioning, it drives the outer ring to rotate. It can work with the hollow block to drive the inner ring to rotate to improve the clamping effect. It can also reduce the force applied to one side as the outer ring rotates, reduce the deformation generated during fixation, and thus improve the practicality of the device. Attached Figure Description

[0024] Figure 1 A perspective view of the bearing concentricity precision calibration device proposed in this utility model;

[0025] Figure 2 This is a front view of the bearing concentricity precision calibration device proposed in this utility model;

[0026] Figure 3 This is a top view of the bearing concentricity precision calibration device proposed in this utility model.

[0027] Figure 4 This is a partial structural exploded view of the bearing concentricity precision calibration device proposed in this utility model;

[0028] Figure 5 This is a structural exploded view of the auxiliary mechanism of the bearing concentricity precision calibration device proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Auxiliary mechanism; 201. Hinge; 202. Roller; 203. Fixing block; 204. Spring; 205. Push plate; 3. Cross rod; 4. Double-acting lead screw; 5. Hollow plate; 6. Rotating wheel; 7. Belt; 8. Rotating cover; 9. Support rod; 10. Threaded rod; 11. Lifting plate; 12. Motor; 13. Hollow block; 14. Gear; 15. Rack; 16. Telescopic sleeve; 17. Rubber plate; 18. Handle; 19. Positioning block; 20. Positioning hole; 21. Bracket; 22. Controller; 23. Knob; 24. Slide groove. Detailed Implementation

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a bearing concentricity precision calibration device, comprising a base 1, a support rod 9 fixedly connected to the rear side of the base 1, a threaded rod 10 rotatably connected to the inner side of the support rod 9, and a lifting plate 11 threadedly connected to the outer side of the threaded rod 10. Rotating the threaded rod 10 can drive the lifting plate 11 to rotate through the threaded connection. A motor 12 is fixedly connected to the top of the lifting plate 11, and the output end of the motor 12 passes through the lifting plate 11 and is fixedly connected to a hollow block 13. Starting the motor 12 can drive the hollow block 13 to rotate. A gear 14 is rotatably connected to the inner side of the hollow block 13, and racks 15 are slidably connected to the front and rear sides of the inner wall of the hollow block 13. The racks 15 and gears 14 are meshed and connected. When the hollow block 13 is rotated... Centrifugal force can drive rack 15 to slide, and through meshing transmission, gear 14 rotates and thus moves rack 15 synchronously. A telescopic sleeve 16 is fixedly connected to the outside of rack 15, and a rubber plate 17 is fixedly connected to the outside of telescopic sleeve 16. As rack 15 moves, it can drive telescopic sleeve 16 and rubber plate 17 to rotate synchronously. A bidirectional lead screw 4 is rotatably connected to the inside of base 1. Hollow plates 5 are threadedly connected to the front and rear sides of the outer wall of bidirectional lead screw 4. Rotating bidirectional lead screw 4 can drive hollow plates 5 to rotate through threaded connection. A rotating cover 8 is provided on the outside of hollow plate 5. The outer ring of bearing can be fixed through rotating cover 8. An auxiliary mechanism 2 is provided on the outside of rotating cover 8. The auxiliary mechanism 2 is used to improve the calibration effect of bearing.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The auxiliary mechanism 2 includes multiple push plates 205, which are respectively disposed on the left and right sides of the outer wall of the rotating cover 8. A hinge 201 is fixedly connected to the outer side of each push plate 205, allowing the push plate 205 to rotate rotatably with the rotating cover 8 via the hinges 201. The connection and rotation of the hinges 201 enable the push plate 205 to rotate along both sides of the rotating cover 8. Fixing blocks 203 are fixedly connected to the top left and right sides of the rotating cover 8 and the top center of each push plate 205. Springs 204 are fixedly connected between each fixing block 203. The elastic potential energy of the springs 204 can be used to rotate the rotating cover 8 along the fixed shaft. When the fixed block 203 is moved, the push plate 205 rotates along the rotating cover 8 to fix the outer side of the bearing. Rollers 202 are rotatably connected to the inner side of the rotating cover 8 and the push plate 205. The rotation of the rollers 202 can drive the outer ring of the bearing to rotate. If the outer ring of the bearing cannot rotate, the clamping force on both sides of the bearing will cause the bearing to deform when the bearing is fixed. The rollers 202 can drive the inner ring of the bearing to rotate with the rotation of the hollow block 13 and the rubber plate 17. The rotation of the inner ring drives the rollers 202 to rotate, which in turn drives the outer ring of the bearing to rotate, reducing deformation and maintaining clamping.

[0034] Reference Figure 1 , Figure 2 and Figure 3A handle 18 is rotatably connected to the top of the support rod 9. The bottom of the handle 18 passes through the support rod 9 and is fixedly connected to the threaded rod 10. Rotating the handle 18 facilitates the rotation of the threaded rod 10. Slide grooves 24 are provided on the front and rear sides of the inner wall of the support rod 9. The outer side of the lifting plate 11 is slidably connected to the slide grooves 24. Sliding along the slide grooves 24 can improve the stability of the lifting plate 11 during movement. Brackets 21 are fixedly connected to the front and rear sides of the outer wall of the support rod 9. The outer side of the brackets 21 is fixedly connected to the base 1. The support and connection of the brackets 21 can improve the connection and structural strength between the base 1 and the support rod 9. Positioning blocks 19 are fixedly connected to the bottom of the outer wall of the base 1. Positioning holes 20 are provided on the outer side of the positioning blocks 19. By installing threaded parts in the positioning blocks 19 and the positioning holes 20, the device can be easily installed and fixed.

[0035] Reference Figure 2 , Figure 3 and Figure 5 A cross rod 3 is rotatably connected to the bottom of the inner wall of the base 1. Rotating wheels 6 are rotatably connected to the upper and lower sides of the inner wall of the hollow plate 5. The inner side of the lower rotating wheel 6 is slidably connected to the cross rod 3. When the cross rod 3 is rotated, it drives the lower rotating wheel 6 to rotate, and the lower rotating wheel 6 can slide along the cross rod 3. A belt 7 is provided on the outer side of the rotating wheel 6. Multiple rotating wheels 6 are connected by belt 7 for transmission. When the lower rotating wheel 6 rotates, it drives the upper rotating wheel 6 to rotate simultaneously via belt 7. The outer side of the upper rotating wheel 6 passes through the hollow plate 5 and is fixedly connected to the rotating cover 8. When the upper rotating wheel 6 rotates, it drives the hollow plate 5 to rotate, which can fix bearings of different sizes while driving the shaft. The bearing can be flipped quickly without disassembly and reassembly, and the up-and-down movement of the lifting plate 11 ensures that the hollow block 13 is not affected by the flipping. The front end of the base 1 is rotatably connected to the upper and lower sides of the base. The rear side of the upper knob 23 passes through the base 1 and is fixedly connected to the bidirectional lead screw 4. Rotating the upper knob 23 can drive the bidirectional lead screw 4 to rotate. The rear side of the lower knob 23 passes through the base 1 and is fixedly connected to the cross rod 3. Rotating the lower knob 23 can drive the cross rod 3 to rotate. The rear side of the base 1 is fixedly connected to the controller 22, which is electrically connected to the motor 12. The controller 22 can be used to control the starting and running power of the motor 12.

[0036] Working principle: Before using the device, first place the bearing to be calibrated inside the rotating cover 8, then rotate the double-acting screw 4. At this time, the hollow plate 5 can be moved through the threaded connection, so as to move the rotating cover 8 to fix the outer ring of the bearing. Then rotate the threaded rod 10 to move the lifting plate 11 along the support rod 9 through the threaded connection, and place the hollow block 13 inside the bearing. Then start the motor 12 to drive the hollow block 13 to rotate. At this time, the centrifugal force of the rotation will drive the gear 14 to rotate, so as to push the rack 15 and its telescopic sleeve 16 to move through the meshing transmission. This can push the telescopic sleeve 16 and its rubber plate 17 to fix the inner ring of the bearing. With the rotation of the hollow block 13, the inner ring of the bearing will rotate. After fixing the inner and outer rings of the bearing, the bearing balls can rotate with the rotation of the inner ring. While calibrating by applying force through the intersection of the inner and outer rings, it prevents the inner balls from being stuck by the inner and outer rings due to deformation during the adjustment process.

[0037] Furthermore, the extension and retraction of the spring 204 can pull the fixed blocks 203 on both sides to move, which in turn can drive the push plate 205 on the outer side of the rotating cover 8 to move. The push plate 205 will rotate along both sides of the rotating cover 8 via the hinge 201, which can conform to the shape of the outer ring of the bearing of different sizes for auxiliary fixation. After fixation, the rotation of the inner rotating roller 202 can drive the outer ring of the bearing to rotate during positioning, which, together with the hollow block 13, drives the inner ring to rotate to improve the clamping effect. As the outer ring rotates, the force applied to one side of the outer ring of the bearing can be reduced, reducing the deformation generated during fixation.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bearing concentricity precision calibration device, comprising a base (1), characterized in that: A support rod (9) is fixedly connected to the rear side of the base (1). A threaded rod (10) is rotatably connected to the inner side of the support rod (9). A lifting plate (11) is threadedly connected to the outer side of the threaded rod (10). A motor (12) is fixedly connected to the top of the lifting plate (11). The output end of the motor (12) passes through the lifting plate (11) and is fixedly connected to a hollow block (13). A gear (14) is rotatably connected to the inner side of the hollow block (13). A rack (15) is slidably connected to both the front and rear sides of the inner wall of the hollow block (13). The rack (15) meshes with the gear (14). A telescopic sleeve (16) is fixedly connected to the outer side of the rack (15). A rubber plate (17) is fixedly connected to the outer side of the telescopic sleeve (16). A two-way lead screw (4) is rotatably connected to the inner side of the base (1). Hollow plates (5) are threaded to the front and rear sides of the outer wall of the two-way lead screw (4). A rotating cover (8) is provided on the outer side of the hollow plate (5). An auxiliary mechanism (2) is provided on the outer side of the rotating cover (8). The auxiliary mechanism (2) is used to improve the calibration effect of the bearing.

2. The bearing concentricity precision calibration device according to claim 1, characterized in that: The auxiliary mechanism (2) includes multiple push plates (205), which are respectively disposed on the left and right sides of the outer wall of the rotating cover (8). A hinge (201) is fixedly connected to the outer side of the push plate (205). The push plate (205) is rotatably connected to the rotating cover (8) through the hinge (201). Fixing blocks (203) are fixedly connected to the top left and right sides of the rotating cover (8) and the top center of the push plate (205). Springs (204) are fixedly connected between the fixing blocks (203). Rollers (202) are rotatably connected to the inner side of the rotating cover (8) and the push plate (205).

3. The bearing concentricity precision calibration device according to claim 1, characterized in that: The top of the support rod (9) is rotatably connected to a handle (18), the bottom of the handle (18) passes through the support rod (9) and is fixedly connected to the threaded rod (10), and the inner wall of the support rod (9) is provided with sliding grooves (24) on both the front and rear sides, and the outer side of the lifting plate (11) is slidably connected to the sliding grooves (24).

4. The bearing concentricity precision calibration device according to claim 1, characterized in that: The support rod (9) has brackets (21) fixedly connected to the front and rear sides of its outer wall, and the outer side of the brackets (21) is fixedly connected to the base (1).

5. The bearing concentricity precision calibration device according to claim 1, characterized in that: The base (1) has positioning blocks (19) fixedly connected to the bottom of the outer wall around the perimeter, and positioning holes (20) are provided on the outer side of the positioning blocks (19).

6. The bearing concentricity precision calibration device according to claim 1, characterized in that: A cross rod (3) is rotatably connected to the bottom of the inner wall of the base (1). Rotating wheels (6) are rotatably connected to the upper and lower sides of the inner wall of the hollow plate (5). The inner side of the lower rotating wheel (6) is slidably connected to the cross rod (3). A belt (7) is provided on the outer side of the rotating wheel (6). Multiple rotating wheels (6) are connected to each other through the belt (7). The outer side of the upper rotating wheel (6) passes through the hollow plate (5) and is fixedly connected to the rotating cover (8).

7. The bearing concentricity precision calibration device according to claim 6, characterized in that: The front end of the base (1) is rotatably connected to a knob (23) on both the upper and lower sides. The rear side of the upper knob (23) passes through the base (1) and is fixedly connected to the bidirectional lead screw (4). The rear side of the lower knob (23) passes through the base (1) and is fixedly connected to the cross rod (3).

8. The bearing concentricity precision calibration device according to claim 1, characterized in that: A controller (22) is fixedly connected to the rear side of the base (1), and the controller (22) is electrically connected to the motor (12).

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