Angular contact ball bearing convexity detection device and detection method

Abstract

A kind of angular contact ball bearing convexity detection device and detection method, belong to bearing detection technical field.The present contact ball bearing convexity detection device due to its structural reasons, resulting in the technical problem of insufficient detection precision is solved.Bearing detection station is equipped with three jaw clamping mechanism, for clamping and positioning the outer ring of the bearing to be measured;Bearing positioning tool is clamped with bearing detection station measured bearing;Jacking cylinder is set below bearing detection station, and axial pre-load is transmitted upward by bearing column;Rotary drive mechanism is integrated in bearing detection station, for driving the inner ring of the bearing to be measured rotates;Probe installed at the bottom of displacement sensor is in contact with the upper surface of the inner ring of the bearing to be measured, for collecting displacement data of inner ring in the process of rotation;Data processing module is electrically connected with displacement sensor, for receiving and analyzing displacement data collected by multiple points.The detection precision is improved.The present application is used for angular contact ball bearing convexity detection.

Description

Technical Field

[0001] This invention relates to a device and method for detecting the protrusion of angular contact ball bearings, belonging to the field of bearing testing technology. Background Technology

[0002] Angular contact ball bearings are core components of precision machinery. Their protrusion directly affects the bearing's support stiffness and service life, making them a key parameter in the assembly process.

[0003] Existing methods for measuring protrusion mostly rely on manual operation or simple equipment, which have three major drawbacks: First, the positioning accuracy is insufficient, and the center lines of the outer and inner rings are prone to misalignment, resulting in measurement reference deviation. Second, the loading method is singular and uneven, which cannot simulate the preload state in actual operation, and the rolling elements are difficult to accurately land at the bottom of the raceway. Third, there is a lack of dynamic measurement capabilities. Static measurement cannot reflect the true protrusion during bearing operation, and the measurement position is generally singular, which has great randomness and is difficult to meet the assembly accuracy requirements of precision machinery.

[0004] In summary, existing contact ball bearing protrusion detection devices suffer from insufficient detection accuracy due to their inherent structural limitations. Summary of the Invention

[0005] This invention addresses the technical problem of insufficient detection accuracy in existing contact ball bearing protrusion detection devices due to their structural limitations. The invention proposes a new angular contact ball bearing protrusion detection device, comprising a bearing testing platform, a bearing positioning fixture, a lifting cylinder, a rotary drive mechanism, a displacement sensor, a probe, and a data processing module.

[0006] The bearing testing bench is equipped with a three-jaw clamping mechanism for clamping and positioning the outer ring of the bearing being tested;

[0007] The bearing positioning fixture is set above the bearing testing table, and the bearing positioning fixture works with the bearing testing table to clamp the bearing to be tested.

[0008] The lifting cylinder is located below the bearing testing platform and transmits axial preload upward through the load-bearing column to achieve uniform loading on the outer ring of the bearing under test.

[0009] The rotary drive mechanism is integrated into the bearing testing bench and is used to drive the inner ring of the bearing under test to rotate.

[0010] The displacement sensor is installed on the upper side of the bearing testing platform. The probe installed at the bottom of the displacement sensor contacts the upper surface of the inner ring of the bearing being tested, and is used to collect displacement data of the inner ring during rotation.

[0011] The data processing module, electrically connected to the displacement sensor, is used to receive and analyze displacement data collected from multiple points, calculate the protrusion amount, and generate measurement curves.

[0012] As another improvement of the present invention, the three-jaw clamping mechanism keeps the center lines of the outer ring and the inner ring of the bearing coincide during the clamping process.

[0013] As another improvement of the present invention, it also includes a support column, wherein the axial preload applied by the lifting cylinder through the support column is aligned with the bearing axis.

[0014] As another improvement of the present invention, the load-bearing column is a rigid structure.

[0015] As another improvement of the present invention, the rotary drive mechanism drives the inner ring of the bearing under test to rotate, so that the rolling elements of the bearing under test fall to the bottom of the raceway under the action of preload, thereby achieving uniform loading of the rolling elements.

[0016] As another improvement of the present invention, the measurement resolution of the displacement sensor reaches the micrometer or submicrometer level, and the data processing module calculates the average value of multiple sets of displacement data collected during the rotation of the inner ring.

[0017] As another improvement of the present invention, the rotation angle of the inner ring is 360°.

[0018] As another improvement of the present invention, the bearing positioning fixture is detachable and is available in various models.

[0019] As another improvement of the present invention, the installation position of the displacement sensor can be moved in the horizontal direction.

[0020] The present invention also provides a method for detecting the protrusion of an angular contact ball bearing, comprising the following steps:

[0021] S1. Place the bearing to be tested on the bearing testing table and use the three-jaw clamping mechanism to clamp the outer ring and calibrate the center line.

[0022] S2. Start the lifting cylinder to apply a preset axial preload through the support column;

[0023] S3. Start the rotary drive mechanism to drive the inner ring of the bearing to rotate, so that the rolling elements fall into place automatically;

[0024] S4. The probe of the displacement sensor contacts the upper surface of the inner ring to collect multi-point displacement data during the 360° rotation process;

[0025] S5, the data processing module analyzes the collected data, calculates the protrusion amount, and outputs the results.

[0026] The beneficial effects of this invention are:

[0027] 1. A bearing testing bench combined with a three-jaw clamping mechanism is used to clamp and fix the outer ring of the bearing, ensuring that the center lines of the outer and inner rings coincide and eliminating measurement reference deviations. Compared with the existing technology that relies on a positioning core for centering, this solution provides more direct and stable positioning.

[0028] 2. The lifting cylinder transmits the load upward through the load-bearing column. The loading direction is consistent with the bearing axis, which conforms to Abbe's principle, avoids uneven loading, and improves loading uniformity and measurement stability.

[0029] 3. The bearing testing platform integrates a rotary drive mechanism, which drives the inner ring of the bearing to rotate, enabling 360° multi-point data acquisition per revolution. Under preload, the rolling elements automatically fall to the bottom of the raceway, ensuring that all rolling elements are evenly loaded. This solves the problems of high randomness in static measurement and inaccurate rolling element placement in existing technologies.

[0030] 4. Employing displacement sensors with micron or submicron resolution, combined with 360° multi-point acquisition and average value calculation, significantly improves measurement accuracy and data repeatability.

[0031] 5. The bearing positioning fixture is replaceable, and the displacement sensor can be moved and installed, which can adapt to the measurement needs of different models and sizes of bearings and meet the needs of rapid changeover in mass production.

[0032] 6. The entire device is supported by load-bearing columns, which ensures good structural rigidity and eliminates resonance, thus guaranteeing the stability and repeatability of the measurement process. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the working principle of an angular contact ball bearing protrusion detection device of the present invention;

[0034] Figure 2 This is a three-dimensional structural schematic diagram of an angular contact ball bearing protrusion detection device according to the present invention;

[0035] Figure 3 This is a front view schematic diagram of an angular contact ball bearing protrusion detection device according to the present invention;

[0036] Figure 4 This is a side view schematic diagram of an angular contact ball bearing protrusion detection device according to the present invention;

[0037] Figure 5 This is a top view schematic diagram of an angular contact ball bearing protrusion detection device according to the present invention;

[0038] Figure 6 This is a structural schematic diagram of the bearing positioning fixture. Detailed Implementation

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Specific implementation method one: Combining Figures 1 to 6 This embodiment describes an angular contact ball bearing protrusion detection device, which includes a bearing detection platform 4, a bearing positioning fixture 3, a lifting cylinder 6, a rotary drive mechanism, a displacement sensor 1, a probe 2, and a data processing module.

[0041] The bearing testing table 4 is equipped with a three-jaw clamping mechanism for clamping and positioning the outer ring of the bearing being tested;

[0042] The bearing positioning fixture 3 is positioned above the bearing testing platform 4, and works in conjunction with the bearing testing platform 4 to clamp the bearing under test. The bearing testing platform 4 serves as the base platform for the entire device, and its upper surface is equipped with a three-jaw clamping mechanism. This three-jaw clamping mechanism is used to clamp and position the outer ring of the bearing under test. Through the synchronous centripetal movement of the three jaws, it ensures that the center lines of the outer and inner rings of the bearing coincide, eliminating measurement reference deviation. The bearing positioning fixture 3 is positioned above the bearing testing platform 4 and works in conjunction with the bearing testing platform 4 to clamp the bearing under test between the two.

[0043] The lifting cylinder 6 is positioned below the bearing testing platform 4. It transmits axial preload upwards through the support column 5, achieving uniform loading on the outer ring of the bearing under test. The piston rod end of the lifting cylinder 6 is connected to the support column 5. The lifting cylinder 6 transmits axial preload upwards through the support column 5, uniformly loading the outer ring of the bearing under test. The loading direction is consistent with the bearing axis, conforming to Abbe's principle and effectively reducing loading errors.

[0044] The rotary drive mechanism is integrated into the bearing testing platform 4 and is used to drive the inner ring of the bearing under test to rotate. During actual measurement, the bearing positioning fixture 3 and the outer ring of the bearing under test remain fixed, and the rotary drive mechanism drives the inner ring of the bearing under test to rotate synchronously, achieving a 360° full-coverage measurement around the ring. During the rotation, the rolling elements automatically fall to the bottom of the raceway under preload, ensuring that all rolling elements are evenly loaded.

[0045] The displacement sensor 1 is installed on the upper side of the bearing testing platform 4. The probe 2 installed at the bottom of the displacement sensor 1 contacts the upper surface of the inner ring of the bearing being tested, and is used to collect the displacement data of the inner ring during rotation. The resolution of the displacement sensor 1 can reach the micrometer level.

[0046] The data processing module, electrically connected to displacement sensor 1, receives and analyzes displacement data collected from multiple points, calculates the protrusion amount, and generates a measurement curve. The data processing module includes a data acquisition card and a host computer, and is electrically connected to displacement sensor 1. The data processing module receives 360° multi-point displacement data collected by displacement sensor 1, performs conversion, analysis, and average value calculation, and finally obtains the protrusion amount data curve, which is then stored and displayed.

[0047] This implementation method, through the above-described modular design, achieves precise positioning, uniform loading, and dynamic measurement of the bearing under test, meeting the high-precision requirements of precision bearing assembly.

[0048] Specific Implementation Method Two: Combining Figures 1 to 6 This embodiment differs from Specific Embodiment 1 in that the three-jaw clamping mechanism maintains the center lines of the bearing's outer and inner rings during clamping. A bearing testing platform is used in conjunction with the three-jaw clamping mechanism to clamp and fix the bearing's outer ring, ensuring the center lines of the outer and inner rings coincide and eliminating measurement reference deviations. Compared to the existing technology that relies on a positioning core for centering, this solution provides more direct and stable positioning. Other components and connections are the same as in Specific Embodiment 1.

[0049] Specific implementation method three: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that it also includes a support column 5. The axial preload applied by the lifting cylinder 6 through the support column 5 is aligned with the bearing axis. The lifting cylinder transmits the load upward through the support column, with the loading direction aligned with the bearing axis, conforming to Abbe's principle, avoiding uneven loading, and improving loading uniformity and measurement stability. Other components and connection methods are the same as in specific embodiment one or two.

[0050] Specific implementation method four: Combination Figures 1 to 6 This embodiment differs from specific embodiment one in that the load-bearing column 5 is a rigid structure. It supports the entire device, preventing resonance or structural deformation during measurement and ensuring measurement stability. Other components and connection methods are the same as any one of specific embodiments one to three.

[0051] Specific Implementation Method Five: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that the rotary drive mechanism rotates the inner ring of the bearing under test, causing the rolling elements of the bearing under test to fall to the bottom of the raceway under preload, thus achieving uniform loading of the rolling elements. Other components and connection methods are the same as any one of specific embodiments one to four.

[0052] Specific Implementation Method Six: Combination Figures 1 to 6This embodiment differs from Specific Embodiment 1 in that the displacement sensor 1 achieves a measurement resolution at the micrometer or sub-micrometer level, and the data processing module calculates the average value of multiple sets of displacement data collected during the rotation of the inner ring. Using a displacement sensor with micrometer or sub-micrometer resolution, combined with multi-point acquisition and average value calculation, significantly improves measurement accuracy and data repeatability. Other components and connection methods are the same as in any one of Specific Embodiments 1 to 5.

[0053] Specific implementation method seven: Combining Figures 1 to 6 This embodiment differs from Specific Embodiment 1 in that the inner ring rotates by 360°. Other components and connection methods are the same as any one of Specific Embodiments 1 to 6.

[0054] Specific implementation method eight: Combination Figures 1 to 6 This embodiment differs from specific embodiment one in that the bearing positioning fixture 3 is detachable and available in various models. It can meet the measurement requirements for the protrusion of bearings of different sizes. Other components and connection methods are the same as any one of specific embodiments one through seven.

[0055] Specific Implementation Method Nine: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that the installation position of displacement sensor 1 can be moved horizontally. It can meet the measurement requirements for the protrusion of bearings of different sizes. Other components and connection methods are the same as any one of specific embodiments one through eight.

[0056] Specific Implementation Method Ten: Combining Figures 1 to 6 This embodiment describes a method for detecting the protrusion of an angular contact ball bearing. The method is based on the angular contact ball bearing protrusion detection device according to any one of claims 1 to 9, and includes the following steps:

[0057] S1. Place the bearing to be tested on the bearing testing platform 4, and complete the outer ring clamping and center line calibration through the three-jaw clamping mechanism;

[0058] S2. Start the lifting cylinder 6 and apply a preset axial preload through the support column 5;

[0059] S3. Start the rotary drive mechanism to drive the inner ring of the bearing to rotate, so that the rolling elements fall into place automatically;

[0060] S4. The probe 2 of displacement sensor 1 contacts the upper surface of the inner ring to collect multi-point displacement data during the 360° rotation process;

[0061] S5, the data processing module analyzes the collected data, calculates the protrusion amount, and outputs the results.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting the protrusion of an angular contact ball bearing, characterized in that... It includes a bearing testing platform (4), a bearing positioning fixture (3), a lifting cylinder (6), a rotary drive mechanism, a displacement sensor (1), a probe (2), and a data processing module; The bearing testing bench (4) is equipped with a three-jaw clamping mechanism for clamping and positioning the outer ring of the bearing to be tested; The bearing positioning fixture (3) is set above the bearing testing table (4), and the bearing positioning fixture (3) and the bearing testing table (4) cooperate to clamp the bearing to be tested; The lifting cylinder (6) is located below the bearing testing platform (4) and transmits the axial preload upward through the load-bearing column (5) to achieve uniform loading on the outer ring of the bearing under test. The rotary drive mechanism is integrated into the bearing testing bench (4) and is used to drive the inner ring of the bearing under test to rotate. The displacement sensor (1) is installed on the upper side of the bearing testing platform (4). The probe (2) installed at the bottom of the displacement sensor (1) contacts the upper surface of the inner ring of the bearing being tested, and is used to collect displacement data of the inner ring during rotation. The data processing module is electrically connected to the displacement sensor (1) to receive and analyze displacement data collected from multiple points, calculate the protrusion amount, and generate a measurement curve.

2. The angular contact ball bearing protrusion detection device according to claim 1, characterized in that, The three-jaw clamping mechanism keeps the center lines of the outer and inner rings of the bearing aligned during the clamping process.

3. The angular contact ball bearing protrusion detection device according to claim 1, characterized in that... It also includes a support column (5), and the axial preload applied by the lifting cylinder (6) through the support column (5) is in the same direction as the bearing axis.

4. The angular contact ball bearing protrusion detection device according to claim 3, characterized in that, The load-bearing column (5) is a rigid structure.

5. The angular contact ball bearing protrusion detection device according to claim 1, characterized in that, The rotary drive mechanism drives the inner ring of the bearing under test to rotate, causing the rolling elements of the bearing under test to fall to the bottom of the raceway under preload, thus achieving uniform loading of the rolling elements.

6. The angular contact ball bearing protrusion detection device according to claim 1, characterized in that, The displacement sensor (1) has a measurement resolution of micrometer or submicrometer level, and the data processing module calculates the average value of multiple sets of displacement data collected during the rotation of the inner ring.

7. The angular contact ball bearing protrusion detection device according to claim 1, characterized in that, The inner ring rotates 360°.

8. The angular contact ball bearing protrusion detection device according to claim 1, characterized in that, The bearing positioning fixture (3) is detachable and is available in various models.

9. The angular contact ball bearing protrusion detection device according to claim 1, characterized in that, The installation position of the displacement sensor (1) can be moved in the horizontal direction.

10. A method for detecting the protrusion of an angular contact ball bearing, the method being based on the angular contact ball bearing protrusion detection device according to any one of claims 1 to 9, comprising the following steps: S1. Place the bearing to be tested on the bearing testing table (4) and complete the outer ring clamping and center line calibration through the three-jaw clamping mechanism; S2. Start the lifting cylinder (6) and apply a preset axial preload through the support column (5); S3. Start the rotary drive mechanism to drive the inner ring of the bearing to rotate, so that the rolling elements fall into place automatically; S4. The probe (2) of the displacement sensor (1) contacts the upper surface of the inner ring to collect multi-point displacement data during the 360° rotation process; S5, the data processing module analyzes the collected data, calculates the protrusion amount, and outputs the results.

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