Miniature angular contact bearing protrusion detection device

Abstract

The utility model discloses a kind of micro angular contact bearing protruding amount detection devices, including bottom plate, inner ring shaft, loading assembly and test instrument. Inner ring shaft is fixed on bottom plate, to be measured bearing is placed on inner ring shaft, loading assembly is located above inner ring shaft, test instrument is set on loading assembly. The utility model is through simple and reasonable structure design, realize the effective detection of micro angular contact bearing protruding amount. Its layout is compact, convenient to operate, can quickly and accurately obtain detection data, help to improve micro angular contact bearing production detection efficiency and quality, and cost controllable, suitable for relevant production detection scene application.

Description

Technical Field

[0001] This utility model relates to a detection device, and more specifically to a device for detecting the protrusion of a miniature angular contact bearing. Background Technology

[0002] As a crucial indicator of bearing performance, the bearing protrusion directly impacts bearing assembly performance. However, the current bearing industry faces significant challenges in bearing protrusion testing: Firstly, traditional testing instruments have limitations. Existing angular contact bearing protrusion testing equipment is mostly designed for medium to large bearings (such as the T6912 measuring instrument with pneumatic loading), which cannot meet the on-site assembly requirements of miniature bearings (outer diameter <26mm). Secondly, traditional testing instruments suffer from large measurement errors. Due to issues such as manual load application and threaded connections in their structural design, measurement efficiency is low and error rates are high. This is especially true during assembly processes involving repeated adjustments to bearing gasket thickness, where repeated measurements are time-consuming and inconsistent. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a device for detecting the protrusion of miniature angular contact bearings. Firstly, it fills the gap in miniature bearing detection and compensates for the deficiencies of existing instruments, enabling the detection and control of the protrusion of miniature angular contact bearings (e.g., with an outer diameter of 3-22mm). Secondly, it achieves miniaturization and a passive design, using mechanical lever loading to replace the pneumatic / hydraulic system, eliminating the need for external power or air supply, thus compensating for stroke errors and interference errors. This highlights its necessity in controlling the protrusion of miniature bearings, improving accuracy, and expanding applicable scenarios.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the protrusion of a miniature angular contact bearing, comprising a base plate, an inner ring shaft, a loading assembly, and a testing instrument. The inner ring shaft is fixedly mounted on the base plate, the bearing to be tested is placed on the inner ring shaft, the loading assembly is positioned above the inner ring shaft, and the testing instrument is mounted on the loading assembly.

[0005] As a further improvement of this utility model, the loading assembly includes a loading rod and an inner ring fitting sleeve. One end of the loading rod is hinged to the base plate, and the other end is a free end. The inner ring fitting sleeve is located in the middle of the loading rod, the detection head of the instrument abuts against the middle of the loading rod, and a weight is hung on the lower side of the free end of the loading rod.

[0006] As a further improvement of this utility model, a loading ring is provided in the middle of the loading rod, and a loading ball is embedded in the loading ring. The loading ball is positioned between the upper end of the inner ring fitting sleeve and the detection head of the testing instrument. The diameter of the upper ring hole of the loading ring is smaller than the diameter of the lower ring hole, and the diameter of the loading ball is between the diameters of the upper and lower ring holes of the loading ring.

[0007] As a further improvement of this utility model, the inner ring shaft includes a shaft base and a shaft rod. The shaft base is fixedly installed on the base plate at a position relative to the loading ring, and the shaft base is pagoda-shaped. The shaft rod is fixedly installed on the upper end of the shaft base.

[0008] As a further improvement of this utility model, a loading bracket is fixed on the base plate, and the end of the loading rod is hinged to the loading bracket. A support rod is hinged to the loading bracket below the end of the loading rod. The lower side of the loading rod is toothed, and the free end of the support rod is wedge-shaped. When the free end of the support rod is embedded in the tooth of the loading rod, the support rod, the loading rod, and the loading bracket form a right-angled triangular support structure.

[0009] As a further improvement of this utility model, the inner ring fitting sleeve is cylindrical, with a spherical groove at the upper end to fit with the loading ball, and a cylindrical groove at the lower end to fit with the upper end of the shaft.

[0010] The beneficial effects of this invention are as follows: This miniature angular contact bearing protrusion detection device is specifically designed for miniature bearings, featuring a compact structure that facilitates use in on-site assembly scenarios. Through the design of components such as the loading rod, inner ring fitting sleeve, and loading ball, and utilizing a weight loading method, it can accurately simulate the loading conditions under actual working conditions, reducing errors caused by manual loading and complex connection structures, thus improving measurement accuracy. Simultaneously, the right-angled triangular support structure formed by the loading bracket, support rod, and loading rod enhances the stability of the device, further ensuring measurement accuracy. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the micro angular contact bearing protrusion detection device of this utility model.

[0012] Figure 2 for Figure 1 Schematic diagram of the inner ring shaft;

[0013] Figure 3 for Figure 1 A cross-sectional view of the inner ring fitting sleeve. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0015] Reference Figure 1As shown, the miniature angular contact bearing protrusion detection device of this embodiment includes a base plate 1, an inner ring shaft 8, a loading assembly, and a testing instrument 17. The inner ring shaft 8 is fixed on the base plate 1, the bearing to be tested is placed on the inner ring shaft 8, the loading assembly is located above the inner ring shaft 8, and the testing instrument 17 is mounted on the loading assembly. During testing, the loading assembly applies a stable load to the bearing, and the testing instrument 17 indirectly measures the bearing protrusion by detecting the displacement change of the loading assembly. The device has a compact overall structure and is designed for miniature bearings with an outer diameter <26mm, solving the problem that traditional equipment in the prior art is only suitable for medium and large bearings, and meeting the portability requirements for on-site assembly.

[0016] Furthermore, refer to Figure 1 As shown, the loading assembly includes a loading rod 4, an inner ring fitting sleeve 10, and a weight 13. One end of the loading rod 4 is hinged to the base plate 1, and the other end is a free end. The inner ring fitting sleeve 10 is located in the middle, and the detection head of the testing instrument 17 abuts against the middle of the loading rod 4. The weight 13 is suspended on the lower side of the free end of the loading rod 4. During operation, the weight 13 applies a downward torque to the loading rod 4 through the lever principle, which is transmitted to the bearing under test through the inner ring fitting sleeve 10, forming a stable axial load. Compared with the instability of manual loading in the background technology, the weight loading method realizes quantitative control of the load, reduces human operation error, and improves the consistency of detection.

[0017] Furthermore, refer to Figure 1 and Figure 3 As shown, a loading ring 41 is located in the middle of the loading rod 4, with a loading ball 42 embedded inside. The upper end of the inner ring fitting sleeve 10 has a spherical groove that mates with the loading ball 42, and the lower end has a cylindrical groove that mates with the upper end of the shaft 82 of the inner ring shaft 8. The contact between the loading ball 42 and the spherical groove is point contact, which can adaptively adjust the angle to ensure that the loading force acts perpendicularly on the bearing, avoiding force skew caused by assembly deviations. The fit between the cylindrical groove and the shaft 82 ensures the coaxiality of the inner ring fitting sleeve 10. This structural design reduces stress concentration caused by traditional threaded connections, reduces measurement errors, and solves the problem of high error rate in the background technology.

[0018] Furthermore, refer to Figure 1 and Figure 2 As shown, the inner ring shaft 8 includes a pagoda-shaped shaft base 81 and a shaft rod 82 fixed to its upper end. The shaft base 81 is fixed on the base plate 1 below the loading ring 41. The pagoda-shaped shaft base 81 increases the contact area with the base plate 1, improving the overall stability of the inner ring shaft 8 and avoiding measurement deviations caused by vibration during testing. The shaft rod 82 precisely matches the inner ring of the bearing under test, ensuring accurate bearing positioning and providing a reliable benchmark for protrusion detection.

[0019] Furthermore, refer to Figure 1As shown, a loading bracket 2 is fixed on the base plate 1, and the end of the loading rod 4 is hinged to the loading bracket 2. A support rod 11 is hinged to the loading bracket 2 below the end of the loading rod 4. The lower side of the loading rod 4 has teeth, and the free end of the support rod 11 is wedge-shaped. When engaged, the three form a right-angled triangular support structure. This support structure can fix the loading rod 4 in the non-testing state, making it convenient to put on and take off the bearing. During testing, the support rod 11 is released, and the loading rod 4 naturally hangs down under the gravity of the weight. The operation is simple and quick, solving the time-consuming problem of repeated loading and unloading of traditional equipment. It is especially suitable for rapid retesting when repeatedly repairing and grinding gaskets.

[0020] In summary, this solution constructs a protrusion detection device specifically designed for miniature angular contact bearings through a compact overall structure, quantitative weight loading, adaptive contact of the loading ball, and stable support positioning design. Compared with the prior art, its advantages are: 1) The miniaturized structure is suitable for bearings with an outer diameter <26mm, meeting on-site assembly requirements; 2) Weight loading and point contact engagement reduce human error and improve detection accuracy; 3) The rapid support structure simplifies operation and improves the efficiency and consistency of multiple retests. This device effectively solves the limitations of traditional equipment and provides a practical solution for the efficient and accurate detection of miniature bearings.

[0021] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A device for detecting the protrusion of a miniature angular contact bearing, characterized in that: The device includes a base plate (1), an inner ring shaft (8), a loading assembly, and a testing instrument (17). The inner ring shaft (8) is fixedly installed on the base plate (1), the bearing to be tested is placed on the inner ring shaft (8), the loading assembly is set above the inner ring shaft (8), and the testing instrument (17) is set on the loading assembly.

2. The miniature angular contact bearing protrusion detection device according to claim 1, characterized in that: The loading assembly includes a loading rod (4) and an inner ring fitting sleeve (10). One end of the loading rod (4) is hinged to the base plate (1), and the other end is a free end. The inner ring fitting sleeve (10) is located in the middle of the loading rod (4). The detection head of the instrument (17) abuts against the middle of the loading rod (4). A weight (13) is hung on the lower side of the free end of the loading rod (4).

3. The miniature angular contact bearing protrusion detection device according to claim 2, characterized in that: The loading rod (4) has a loading ring (41) in the middle, and a loading ball (42) is embedded in the loading ring (41). The loading ball (42) is located between the upper end of the inner ring fitting sleeve (10) and the detection head of the test instrument (17). The diameter of the upper ring hole of the loading ring (41) is smaller than the diameter of the lower ring hole, and the diameter of the loading ball (42) is between the diameter of the upper ring hole and the diameter of the lower ring hole of the loading ring (41).

4. The miniature angular contact bearing protrusion detection device according to claim 3, characterized in that: The inner ring shaft (8) includes a shaft base (81) and a shaft rod (82). The shaft base (81) is fixedly installed on the base plate (1) at a position below the loading ring (41). The shaft base (81) is pagoda-shaped. The shaft rod (82) is fixedly installed on the upper end of the shaft base (81).

5. The miniature angular contact bearing protrusion detection device according to claim 4, characterized in that: A loading bracket (2) is fixed on the base plate (1). The end of the loading rod (4) is hinged to the loading bracket (2). A support rod (11) is hinged to the loading bracket (2) at a position below the end of the loading rod (4). The lower side of the loading rod (4) is toothed. The free end of the support rod (11) is a wedge-shaped end. When the free end of the support rod (11) is embedded in the tooth of the loading rod (4), the support rod (11), the loading rod (4) and the loading bracket (2) form a right-angled triangular support structure.

6. The miniature angular contact bearing protrusion detection device according to claim 5, characterized in that: The inner ring fitting sleeve (10) is cylindrical, with a spherical groove at the upper end to fit with the loading ball (42), and a cylindrical groove at the lower end to fit with the upper end of the shaft (82).

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