Bearing inner ring run-out detection tool
By designing a testing fixture suitable for bearing inner rings of various specifications, the problem of numerous fixtures and complex management in existing testing methods has been solved, achieving efficient and accurate radial runout testing of bearing inner rings.
Patent Information
- Application Number
- CN202520231160.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing methods for detecting radial runout of bearing inner rings lack versatility and flexibility in fixtures, resulting in a large number of fixtures, complex management, low detection efficiency, and high costs.
A bearing inner ring runout detection fixture was designed, which adopts a tapered hole for automatic centering, a rotary buckle for adjusting the position of the dial indicator, a clamping mechanism for fixing the bearing inner ring, and a cleaning mechanism for cleaning the inner ring. This allows for the use of a common fixture for bearings of various specifications, thereby improving detection efficiency and accuracy.
By reducing the number of fixtures, the efficiency and accuracy of testing are improved, management is simplified, the difficulty of operation and error rate are reduced, and the stability and cleanliness of testing are guaranteed.
Smart Images
Figure CN223826928U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bearing detection frock field, especially relates to a bearing inner race jump detection frock. BACKGROUND
[0002] In the mechanical manufacturing industry, bearings as the key components of supporting rotating parts, its quality and performance directly affect the running stability and service life of mechanical equipment. The radial runout of bearing inner race is an important indicator to measure the quality of bearing, which reflects the stability of bearing inner race in the rotation process. Therefore, the radial runout detection of bearing inner race is an indispensable link in the bearing production process.
[0003] However, the existing bearing radial runout detection method has some problems, especially in the use of clamps. In the traditional detection method, different clamps are needed to fix and detect different specifications of bearing inner race. This "one-to-one" clamp usage not only leads to a significant increase in the number of clamps, but also increases the detection cost and reduces the detection efficiency. In addition, due to the large number of clamps, management and maintenance become more complex, which is not conducive to the smooth progress of detection work.
[0004] Specifically, the existing clamp design often lacks universality and flexibility, making it difficult to adapt to the detection needs of different specifications of bearing inner race. Each time the bearing specification is changed, the corresponding clamp needs to be replaced, which not only wastes time but also increases the operation difficulty and error rate. UTILITY MODEL CONTENTS
[0005] The utility model aims at overcoming the deficiencies in the prior art, providing a bearing inner race jump detection frock, which is suitable for radial runout detection of various specifications of bearing inner race, effectively solves the problems of many clamps and complex management in the existing detection method, and improves the efficiency and accuracy of bearing detection.
[0006] In order to achieve the above purpose, the utility model adopts the technical scheme of:
[0007] A bearing inner race jump detection frock, comprising:
[0008] A workbench is provided with supporting legs at the lower part and a base at the upper part. A conical hole is provided in the middle of the base for placing and automatically centering the bearing inner race. An annular plate is connected to the outside of the base, and an arc-shaped guide rail is fixedly connected to the annular plate. A sliding block is slidably connected to the arc-shaped guide rail.
[0009] A detection assembly is used for radial runout detection of bearing inner race. The detection assembly includes a supporting rod, the lower end of which is fixedly installed on the sliding block. A first table rod is provided at the upper part of the supporting rod. A second table rod is provided at one end of the first table rod. A micrometer is connected to the lower end of the second table rod.
[0010] Furthermore, the taper of the conical hole is 45°-60°, and the surface roughness Ra of the conical hole is ≤0.8μm.
[0011] Furthermore, the support rod is connected to the first gauge rod, the first gauge rod to the second gauge rod, and the second gauge rod to the dial indicator via rotating buckles.
[0012] Furthermore, the upper part of the base is provided with several evenly arranged pressing mechanisms. Each pressing mechanism includes a fixed rod, which is rotatably mounted on the base. The upper part of the fixed rod is provided with a connecting rod, one end of the connecting rod is provided with a pressure rod, the upper end of the pressure rod is provided with a pull ring, and a tension spring is sleeved on the outside of the pressure rod. The lower end of the tension spring is connected to the connecting rod, and the upper end of the tension spring is connected to the upper end of the pressure rod.
[0013] Furthermore, the upper end of the fixing rod is provided with a connecting frame, and the upper part of the connecting frame is threaded with a fastening bolt. The connecting rod is movably installed inside the connecting frame and fixed to the connecting frame by the fastening bolt.
[0014] Furthermore, the workbench has a bottom shell at its lower part, the upper end of which communicates with a conical hole. A cleaning mechanism is located inside the bottom shell. The cleaning mechanism includes a drive rod, with several brushes on the outer side of the drive rod. The lower end of the drive rod has a first external thread, and the lower end of the drive rod is threadedly connected to the lower part of the bottom shell. Several keyways are provided on the first external thread. A connecting frame is located at the lower part of the workbench, and a drive mechanism is connected to the lower end of the connecting frame. The drive mechanism includes a hydraulic cylinder. One end of the piston rod of the hydraulic cylinder is connected to a rack via a connecting plate. A gear meshes with one side of the rack, and the gear has a clearance fit with the drive rod. A connecting seat is located below the gear, and the connecting seat is connected to the bottom shell. A bushing is connected to the lower part of the gear, and the bushing is rotatably connected to the connecting seat via a bearing. Several keyways that mate with the keyways are located at the center of the gear.
[0015] Furthermore, a fixed base is fixedly connected to the lower part of the drive rod, and several lower connecting rods are evenly pivotally connected to the outer side of the fixed base. The lower connecting rods are pivotally connected to the lower part of the brush. A movable base is movably connected to the upper part of the drive rod, and several upper connecting rods are evenly pivotally connected to the outer side of the movable base. The upper connecting rods are pivotally connected to the upper part of the brush. A spring is connected between the fixed base and the movable base. The upper part of the drive rod is provided with a second external thread, and an adjusting nut is threaded onto the second external thread for adjusting the distance between the multiple brushes.
[0016] The beneficial effects of this utility model are:
[0017] 1) By setting a tapered hole on the base, this utility model allows bearing inner rings of different specifications to share a single fixture, reducing the number of fixtures and improving the efficiency of bearing inspection.
[0018] 2) The support rod is connected to the first gauge rod, the first gauge rod to the second gauge rod, and the second gauge rod to the dial indicator via rotating buckles, so that the position of the dial indicator can be flexibly adjusted according to the specifications of the bearing inner ring.
[0019] 3) By setting up a clamping mechanism, the pressure rod is used to press down against the inner ring of the bearing, which prevents the inner ring of the bearing from moving during the testing of the testing components, thus ensuring the stability of the inner ring of the bearing and ensuring the accuracy of the test.
[0020] 4) A connecting frame that is movably connected to the connecting rod is provided at the upper end of the fixed rod, and the fixed frame is secured with fastening bolts, so as to facilitate the adjustment of the position of the pressure rod according to the inner ring of the bearing of different specifications.
[0021] 5) By setting up a cleaning mechanism, the hydraulic cylinder and gear rack mechanism drive the cleaning mechanism to rotate and move up and down simultaneously, cleaning the inner ring of the bearing before testing, thus ensuring the accuracy of the test.
[0022] 6) The distance between multiple brushes is adjustable to facilitate cleaning of bearing inner rings of different diameters. Attached Figure Description
[0023] Appendix Figure 1 This is a diagram showing the cleanliness of the bearing inner ring before inspection.
[0024] Appendix Figure 2 This is a diagram showing the radial runout detection status of the bearing inner ring.
[0025] Appendix Figure 3 This is a sectional view of the workbench.
[0026] Appendix Figure 4 This is a schematic diagram of a cleaning facility.
[0027] Appendix Figure 5 This is a schematic diagram of the clamping mechanism.
[0028] Appendix Figure 6 This is a schematic diagram of the detection component.
[0029] In the diagram, 1. Workbench; 11. Support leg; 12. Base; 13. Conical hole; 14. Ring plate; 15. Arc guide rail; 16. Slider; 17. Bottom shell; 18. Connecting seat; 2. Detection assembly; 21. Support rod; 22. First gauge rod; 23. Second gauge rod; 24. Rotary buckle; 25. Dial indicator; 3. Clamping mechanism; 31. Fixed rod; 32. Connecting frame; 33. Fastening bolt; 34. Connecting rod; 35. Pressure rod; 36. Tension spring; 37. Pull ring; 4. Cleaning mechanism; 41. Drive rod; 411. Keyway; 42. Fixed seat; 43. Lower connecting rod; 44. Movable seat; 45. Upper connecting rod; 46. Spring; 47. Adjusting nut; 48. Brush; 5. Drive mechanism; 51. Connecting frame; 52. Hydraulic cylinder; 53. Connecting plate; 54. Rack; 55. Gear. Detailed Implementation
[0030] The following will be combined with the appendix Figures 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0031] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] like Figures 1-3 As shown, a bearing inner ring runout detection fixture includes: a worktable 1 and a detection component 2. The worktable 1 has a support leg 11 at its lower part and a base 12 at its upper part. The base 12 has a tapered hole 13 in the middle for placing the bearing inner ring and automatically centering it. This allows bearing inner rings of different specifications to share a single fixture, reducing the number of fixtures and improving the efficiency of bearing detection. The base 12 is externally connected to a ring plate 14, and an arc-shaped guide rail 15 is fixedly connected to the ring plate 14. A slider 16 is slidably connected to the arc-shaped guide rail 15.
[0033] like Figure 6As shown, the detection assembly 2 includes a support rod 21, the lower end of which is fixedly mounted on the slider 16. A first dial indicator 22 is located on the upper part of the support rod 21, and a second dial indicator 23 is located at one end of the first dial indicator 22. A dial indicator 25 is connected to the lower end of the second dial indicator 23. During the radial runout detection of the bearing inner ring, the needle of the dial indicator 25 presses against the bearing inner ring, and the slider 16 is rotated, causing the detection assembly 2 to rotate around the bearing inner ring on the base 12, thereby detecting the radial runout of the bearing inner ring.
[0034] The taper of the conical hole 13 is 45°-60°, and the surface roughness Ra of the conical hole 13 is ≤0.8μm.
[0035] like Figure 6 As shown, the support rod 21 is connected to the first gauge rod 22, the first gauge rod 22 is connected to the second gauge rod 23, and the second gauge rod 23 is connected to the dial indicator 25 via a rotating buckle 24, so that the position of the dial indicator 25 can be flexibly adjusted according to the specifications of the bearing inner ring.
[0036] like Figure 1 , Figure 2 , Figure 5 As shown, the upper part of the base 12 is provided with several evenly arranged pressing mechanisms 3. Each pressing mechanism 3 includes a fixed rod 31, which is rotatably mounted on the base 12. The upper part of the fixed rod 31 is provided with a connecting rod 34, one end of which is provided with a pressure rod 35. The upper end of the pressure rod 35 is provided with a pull ring 37, and a tension spring 36 is sleeved on the outside of the pressure rod 35. The lower end of the tension spring 36 is connected to the connecting rod 34, and the upper end of the tension spring 36 is connected to the upper end of the pressure rod 35. After the bearing inner ring is placed inside the tapered hole 13, the fixed rod 31 is rotated to make the pressure rod 35 rotate to the upper part of the bearing inner ring. The pressure rod 35 is used to press down on the bearing inner ring, which prevents the bearing inner ring from moving during the detection of the detection component 2, thus ensuring the stability of the bearing inner ring and ensuring the accuracy of the detection.
[0037] like Figure 6 As shown, the upper end of the fixing rod 31 is provided with a connecting frame 32, and the upper part of the connecting frame 32 is threaded with a fastening bolt 33. The connecting rod 34 is movably installed inside the connecting frame 32 and is fixed to the connecting frame 32 by the fastening bolt 33, which facilitates the adjustment of the position of the pressure rod 35 according to the bearing inner ring of different specifications.
[0038] like Figure 3 As shown, the workbench 1 has a bottom shell 17 at its lower part, and the upper end of the bottom shell 17 communicates with the conical hole 13. A cleaning mechanism 4 is provided inside the bottom shell 17, such as... Figure 4As shown, the cleaning mechanism 4 includes a drive rod 41, with several brushes 48 on the outer side of the drive rod 41. The lower end of the drive rod 41 has a first external thread, and the lower end of the drive rod 41 is threaded to the lower part of the bottom shell 17. Several keyways 411 are provided on the first external thread. The lower part of the workbench 1 is provided with a connecting frame 51, and the lower end of the connecting frame 51 is connected to the drive mechanism 5. The drive mechanism 5 includes a hydraulic cylinder 52. One end of the piston rod of the hydraulic cylinder 52 is connected to a rack 54 through a connecting plate 53. A gear 55 meshes with one side of the rack 54. The gear 55 is clearance-fitted with the drive rod 41. A connecting seat 18 is provided at the lower part of the gear 55, and the connecting seat 18 is connected to the bottom shell 17. The lower part of the gear 55 is connected to... The gear 55 has a bushing that is rotatably connected to the connecting seat 18 via a bearing. Several key bars that mate with the keyway 411 are located at the center of the gear 55. The hydraulic cylinder 52 extends and retracts, driving the rack 54 to extend and retract. When the rack 54 extends and retracts, it drives the gear 55 to rotate on the connecting seat 18. The key bars in the middle of the gear 55 engage in the keyway 411, thereby driving the drive rod 41 to rotate. This, in turn, drives the brush 48 to clean the inner ring of the bearing, ensuring the accuracy of the inspection. Furthermore, since the lower end of the drive rod 41 is threaded to the bottom shell 17, the drive rod 41 simultaneously extends and retracts within the bottom shell 17 when it rotates. This allows the brush 48 to retract into the bottom shell 17 after cleaning the inner ring of the bearing, preventing the cleaning mechanism 4 from affecting the use of the inspection component 2.
[0039] like Figure 4 As shown, a fixed base 42 is fixedly connected to the lower part of the drive rod 41. Several lower connecting rods 43 are evenly pivotally connected to the outer side of the fixed base 42. The lower connecting rods 43 are pivotally connected to the lower part of the brush 48. A movable base 44 is movably connected to the upper part of the drive rod 41. Several upper connecting rods 45 are evenly pivotally connected to the outer side of the movable base 44. The upper connecting rods 45 are pivotally connected to the upper part of the brush 48. A spring 46 is connected between the fixed base 42 and the movable base 44. The upper part of the drive rod 41 is provided with a second external thread. An adjusting nut 47 is threaded onto the second external thread to adjust the distance between the multiple brushes 48 to accommodate the cleaning of bearing inner rings of different diameters.
[0040] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. A bearing inner ring runout detection fixture, characterized in that, include: The workbench has legs at the bottom and a base at the top. The base has a tapered hole in the middle for placing the inner ring of the bearing and automatically centering it. An annular plate is connected to the outside of the base, and an arc-shaped guide rail is fixedly connected to the annular plate. A slider is slidably connected to the arc-shaped guide rail. A detection assembly for detecting radial runout of the inner ring of a bearing. The detection assembly includes a support rod, the lower end of which is fixedly mounted on a slider. A first gauge rod is provided on the upper part of the support rod, and a second gauge rod is provided at one end of the first gauge rod. A dial indicator is connected to the lower end of the second gauge rod.
2. The bearing inner ring runout detection fixture according to claim 1, characterized in that, The taper of the conical hole is 45°-60°, and the surface roughness Ra of the conical hole is ≤0.8μm.
3. The bearing inner ring runout detection fixture according to claim 1, characterized in that, The support rod is connected to the first gauge rod, the first gauge rod to the second gauge rod, and the second gauge rod to the dial indicator via rotating buckles.
4. The bearing inner ring runout detection fixture according to claim 1, characterized in that, The upper part of the base is provided with several evenly arranged pressing mechanisms. Each pressing mechanism includes a fixed rod, which is rotatably mounted on the base. The upper part of the fixed rod is provided with a connecting rod, one end of the connecting rod is provided with a pressure rod, the upper end of the pressure rod is provided with a pull ring, and a tension spring is sleeved on the outside of the pressure rod. The lower end of the tension spring is connected to the connecting rod, and the upper end of the tension spring is connected to the upper end of the pressure rod.
5. The bearing inner ring runout detection fixture according to claim 4, characterized in that, The upper end of the fixed rod is provided with a connecting frame, and the upper part of the connecting frame is threaded with a fastening bolt. The connecting rod is movably installed inside the connecting frame and fixed to the connecting frame by the fastening bolt.
6. A bearing inner ring runout detection fixture according to any one of claims 1-5, characterized in that, The workbench has a bottom shell at its lower part, and the upper end of the bottom shell communicates with a conical hole. A cleaning mechanism is provided inside the bottom shell. The cleaning mechanism includes a drive rod, and several brushes are provided on the outside of the drive rod. The lower end of the drive rod has a first external thread, and the lower end of the drive rod is threaded to the lower part of the bottom shell. Several keyways are provided on the first external thread. A connecting frame is provided at the lower part of the workbench, and a drive mechanism is connected to the lower end of the connecting frame. The drive mechanism includes a hydraulic cylinder. One end of the piston rod of the hydraulic cylinder is connected to a rack through a connecting plate. A gear meshes on one side of the rack. The gear is clearance-fitted with the drive rod. A connecting seat is provided at the lower part of the gear, and the connecting seat is connected to the bottom shell. A bushing is connected to the lower part of the gear, and the bushing is rotatably connected to the connecting seat through a bearing. Several keyways that mate with the keyways are provided at the center of the gear.
7. The bearing inner ring runout detection fixture according to claim 6, characterized in that, The lower part of the drive rod is fixedly connected to a fixed seat, and several lower connecting rods are evenly pivotally connected to the outside of the fixed seat. The lower connecting rods are pivotally connected to the lower part of the brush. The upper part of the drive rod is movably connected to a movable seat, and several upper connecting rods are evenly pivotally connected to the outside of the movable seat. The upper connecting rods are pivotally connected to the upper part of the brush. A spring is connected between the fixed seat and the movable seat. The upper part of the drive rod is provided with a second external thread, and an adjusting nut is threaded onto the second external thread for adjusting the distance between the multiple brushes.