Bearing inner ring detection device
By combining an electromagnet assembly and a rotary drive device with a probe adjustment structure, the problems of time-consuming, labor-intensive, and poorly adaptable bearing inner ring inspection have been solved. This has enabled high-precision, low-cost, multi-point continuous measurement, improving inspection efficiency and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-07
AI Technical Summary
Existing bearing inner ring inspection technologies are time-consuming and labor-intensive, prone to inspection errors, difficult to achieve full inspection, and have limited ability to identify minute defects. Traditional equipment is complex in structure, expensive, and has poor adaptability.
The screw-column structure, which combines an electromagnet assembly with a position adjustment component, ensures the center alignment of the bearing inner ring. Combined with a contact probe and a rotary drive device, it enables low-speed rotation of the bearing inner ring and continuous multi-point measurement. Vibration offset is limited by the probe adjustment component and auxiliary chuck, supporting the testing of bearings of different specifications.
It improves detection accuracy and efficiency, reduces costs, and is highly adaptable, enabling continuous multi-point circumferential measurement of the bearing inner ring and flexible detection of the inner and outer raceways, significantly enhancing the comprehensiveness and convenience of detection.
Smart Images
Figure CN224095127U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bearing testing technology, specifically a bearing inner ring testing device. Background Technology
[0002] Bearings, as indispensable basic components in industrial equipment, are widely used in mechanical transmission systems. Their quality directly affects the operational stability, lifespan, and safety of the equipment. Among these factors, the dimensional accuracy of the bearing inner ring, the roundness of the raceway, and surface defects can all cause bearing runout.
[0003] Currently, the inspection of bearing inner rings relies on manual measurement using standard test bars or dial indicators. This method is not only time-consuming and labor-intensive but also prone to errors due to variations in operator experience. Industry statistics show that the sampling rate for manual inspection is typically only 5%, which is insufficient to cover the full inspection requirements of large-scale production. Furthermore, manual inspection has limited ability to identify minute defects (such as cracks, shrinkage cavities, and white spots), easily leading to missed defects and affecting the reliability of finished bearings. Some automated inspection devices employ multi-axis linkage or high-precision sensors, resulting in complex equipment structures and high manufacturing costs, making them difficult to popularize in small and medium-sized manufacturing enterprises. Traditional equipment often uses fixed probes or single measurement points, making it difficult to achieve continuous multi-point measurement of the bearing inner ring circumferentially, and it also has poor adaptability to different bearing specifications. Summary of the Invention
[0004] The technical problem to be solved by this application is to overcome the existing defects and provide a bearing inner ring inspection device that can effectively solve the problems in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution: a bearing inner ring inspection device, comprising a worktable, support seats on both sides of the worktable, a support crossbeam at the upper end of the support seats, a linear slide rail slidably mounted on the support crossbeam, a sliding seat slidably mounted on the linear slide rail, an adjustment component at one end of the support crossbeam, a probe adjustment component on one side of the sliding seat, a probe placement seat at the telescopic end of the probe adjustment component, a probe spirally mounted on the lower wing of the probe placement seat, an inner ring placement seat on the upper surface of the worktable, the inner ring placement seat comprising a rotary drive seat, a rotary disk, and a workpiece placement stage, a rotary disk at the output end of the rotary drive seat, a position adjustment component around the rotary disk, and a workpiece placement stage at the connecting end of the position adjustment component.
[0006] As a preferred technical solution of this application, an electromagnet assembly is provided on the lower surface of the workpiece placement stage.
[0007] As a preferred technical solution of this application, the sliding seat is provided with an auxiliary card seat, and the arc-shaped seat in the groove of the auxiliary card seat is consistent with the outer diameter of the extended shaft of the telescopic end of the probe adjustment component.
[0008] As a preferred technical solution of this application, a positioning seat is also provided on one side of the support crossbeam, and the through hole on the positioning seat is connected to the adjustment component.
[0009] As a preferred technical solution of this application, the probe is a contact measurement probe.
[0010] As a preferred technical solution of this application, the rotary drive base includes a drive motor and a reducer. The drive motor is connected to the rotary disk through the reducer and is used to drive the rotary disk to rotate at a low speed.
[0011] Compared with the prior art, the beneficial effects of this application are as follows: The electromagnet assembly at the bottom of the workpiece mounting stage, combined with the threaded column structure of the position adjustment component, ensures that the inner ring of the bearing remains centered when the rotary table rotates at low speed, which is significantly better than traditional manual inspection. The U-shaped groove of the auxiliary chuck fits tightly with the extended outer diameter of the probe adjustment component, and the vertical contact method of the probe avoids measurement errors caused by vibration or offset, improving the accuracy of circumferential dimension data acquisition. The rotary drive seat uses a servo motor and reducer to achieve low-speed rotation of the rotary table, driving the workpiece mounting stage to rotate synchronously. The probe slides along the inner wall of the bearing inner ring, completing continuous multi-point circumferential measurement, effectively improving inspection efficiency. The probe can flexibly switch between inspecting the inner and outer wall grooves. By adjusting the position of the probe placement seat, synchronous or step-by-step measurement of the inner and outer grooves can be achieved without changing equipment, significantly reducing inspection costs. The threaded column structure of the position adjustment component supports the adjustment of the bearing inner ring at different heights, making this application compatible with the inspection of various specifications of workpieces and improving ease of use. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this application;
[0013] Figure 2 This is the main view of this application;
[0014] Figure 3 This is the left view of this application.
[0015] In the diagram: 1 Adjustment component, 2 Probe adjustment component, 3 Sliding seat, 4 Linear slide rail, 5 Probe placement seat, 6 Workpiece placement table, 7 Rotary disk, 8 Support crossbeam, 9 Support seat, 10 Worktable, 11 Probe, 12 Auxiliary chuck, 13 Electromagnet assembly, 14 Position adjustment component, 15 Rotary drive seat. Detailed Implementation
[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.
[0017] Please see Figure 1-3 This application provides a technical solution: a bearing inner ring testing device, including a worktable 10, support seats 9 are provided on both sides of the worktable 10, a support crossbeam 8 is provided at the upper end of the support seat 9, a linear slide rail 4 is slidably provided on the support crossbeam 8, and a sliding seat 3 is slidably provided on the linear slide rail 4.
[0018] Support bases 9 are set on both sides of the workbench 10 to support and fix the support crossbeam 8, providing a reliable support structure for the upper detection mechanism. The support bases 9 adopt an I-shaped structure, which can effectively support the support crossbeam 8 and improve the stability of the support. The linear slide rail 4 is installed on the support crossbeam 8 to provide a precise linear motion track for the sliding seat 3, ensuring the motion accuracy during the detection process.
[0019] The sliding seat 3 is provided with a support for mounting the probe adjustment component 2, which is fixedly connected to the probe adjustment component 2, so as to realize the left and right positions of the probe 11 in the horizontal direction.
[0020] One end of the supporting crossbeam 8 is also provided with an adjustment component 1, one side of the sliding seat 3 is provided with a probe adjustment component 2, the telescopic end of the probe adjustment component 2 is provided with a probe placement seat 5, and a probe 11 is spirally arranged on the lower wing of the probe placement seat 5.
[0021] The adjustment component 1 is located at one end of the support crossbeam 8 and is used to control the front and rear position of the sliding seat 3 on the linear slide rail 4. The position of the probe placement seat 5 can be flexibly and accurately adjusted by the adjustment component 1 and the probe adjustment component 2, thereby adjusting the position of the probe 11 and realizing the positioning function.
[0022] The upper surface of the worktable 10 is provided with an inner ring placement seat, which includes a rotary drive seat 15, a rotary disk 7 and a workpiece placement table 6. The output end of the rotary drive seat 15 is provided with a rotary disk 7, and the rotary disk 7 is provided with a position adjustment component 14 around its perimeter. The connection end of the position adjustment component 14 is provided with a workpiece placement table 6.
[0023] The rotary drive seat 15 provides rotational power to drive the rotary disk 7 to rotate at a low speed; the rotary disk 7 is a rotating platform that drives the workpiece mounting table 6 to rotate synchronously; thereby realizing comprehensive inspection of the workpiece and improving inspection efficiency.
[0024] The position adjustment component 14 is located around the rotating disk 7. The position adjustment component 14 adopts a threaded column structure, which is threaded with the threaded hole on the rotating disk 7 and is adjusted by rotation. It is used to adjust the vertical position of the workpiece mounting table 6 so as to adjust the bearing components at different heights and make it easy for the probe 11 to be accurately positioned in the bearing groove.
[0025] The workpiece mounting platform 6 is used to support the inner ring of the bearing to be tested, and precise positioning is achieved through the position adjustment component 14.
[0026] Furthermore, an electromagnet assembly 13 is provided on the lower surface of the workpiece mounting platform 6.
[0027] The electromagnet assembly 13 is designed to attract and engage with the workpiece mounting platform 6, ensuring that the inner ring of the bearing remains centered when the rotating disk 7 rotates at low speed. The attraction force is ≥10 times the weight of the workpiece, effectively resisting the centrifugal force generated during rotation and reducing the contact error of the probe 11 caused by vibration or offset. The measurement repeatability deviation is <0.005 mm.
[0028] Furthermore, the sliding seat 3 is provided with an auxiliary card seat 12, and the arc-shaped seat in the groove of the auxiliary card seat 12 is consistent with the outer diameter of the extended shaft of the telescopic end of the probe adjusting member 2.
[0029] The bottom of the auxiliary card holder 12 is machined with a U-shaped groove. The width and depth are matched with the outer diameter of the extended shaft of the probe adjustment component 2. The U-shaped groove fits tightly with the outer diameter of the extended shaft of the probe adjustment component 2, limiting the radial offset of the extended shaft.
[0030] Furthermore, a positioning seat is provided on one side of the supporting crossbeam 8, and the through hole on the positioning seat is connected to the adjustment component 1.
[0031] Furthermore, the probe 11 is a contact measurement probe.
[0032] Furthermore, the rotary drive base 15 includes a drive motor and a reducer. The drive motor is connected to the rotary disk 7 through the reducer and is used to drive the rotary disk 7 to rotate at a low speed.
[0033] In use: Place the inner ring of the bearing to be tested in the workpiece mounting table 6, start the electromagnet assembly 13, and use magnetic attraction to firmly attract and fix the inner ring of the bearing, preventing the workpiece from shifting due to centrifugal force generated by rotation during the test. Adjust the up and down position of the workpiece mounting table 6 by adjusting the position adjustment component 14 so that the center of the inner ring of the bearing is aligned with the measuring axis of the probe 11. Start the adjustment component 1 to drive the sliding seat 3 to move along the linear slide rail 4 and adjust the front and back position of the probe placement seat 5. At the same time, adjust the left and right position of the probe placement seat 5 by adjusting the probe adjustment component 2, and adjust the position of the probe 11 on the probe placement seat 5 so that the probe 11 lightly touches the inner wall of the inner ring of the bearing. At this time, the U-shaped groove of the auxiliary card holder 12 is tightly fitted with the extended shaft of the probe adjustment component 2, limiting the radial offset of the extended shaft and ensuring that the probe 11 is in perpendicular contact with the bearing channel. The drive motor of the rotating drive seat 15 is started and converted from high-speed output to low-speed rotation of the rotating disk 7 through the reducer, driving the workpiece mounting table 6 to rotate synchronously. While the rotating disk 7 is rotating, the probe 11 slides along the inner wall of the inner ring of the bearing to collect circumferential dimension data. The probe 11 adopts a multi-point distribution, and the probe 11 is aligned with different circumferential positions in sequence to complete multi-point measurement. At the same time, if it is necessary to measure the outer wall channel, the position of the probe 11 in the probe placement seat 5 can be adjusted to realize multi-point detection of the outer wall channel. The probe 11 can also be flexibly adjusted, with one probe detecting the inner wall channel and another detecting the outer wall channel, improving detection efficiency, realizing multi-purpose use of one machine, and improving the applicability of detection.
[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bearing inner ring testing device, comprising a worktable (10), characterized in that: The worktable (10) is provided with support seats (9) on both sides. The upper end of the support seat (9) is provided with a support crossbeam (8). A linear slide rail (4) is slidably provided on the support crossbeam (8). A sliding seat (3) is slidably provided on the linear slide rail (4). An adjustment component (1) is also provided at one end of the support crossbeam (8). A probe adjustment component (2) is provided on one side of the sliding seat (3). A probe placement seat (5) is provided at the telescopic end of the probe adjustment component (2). A probe (11) is spirally provided on the lower wing of the probe placement seat (5). An inner ring placement seat is provided on the upper surface of the worktable (10). The inner ring placement seat includes a rotary drive seat (15), a rotary disk (7), and a workpiece placement table (6). A rotary disk (7) is provided at the output end of the rotary drive seat (15). A position adjustment component (14) is provided around the rotary disk (7). A workpiece placement table (6) is provided at the connecting end of the position adjustment component (14).
2. The bearing inner ring testing device according to claim 1, characterized in that: An electromagnet assembly (13) is provided on the lower surface of the workpiece mounting platform (6).
3. The bearing inner ring testing device according to claim 1, characterized in that: An auxiliary card seat (12) is provided on the sliding seat (3), and the arc-shaped seat in the groove of the auxiliary card seat (12) is consistent with the outer diameter of the extended shaft of the telescopic end of the probe adjustment component (2).
4. The bearing inner ring testing device according to claim 1, characterized in that: A positioning seat is also provided on one side of the supporting crossbeam (8), and the through hole on the positioning seat is connected to the adjustment component (1).
5. The bearing inner ring testing device according to claim 1, characterized in that: The probe (11) is a contact measurement probe.
6. The bearing inner ring testing device according to claim 1, characterized in that: The rotary drive base (15) includes a drive motor and a reducer. The drive motor is connected to the rotary disk (7) through the reducer and is used to drive the rotary disk (7) to rotate at a low speed.