Bearing bush subdivision height detection tool and system
By using a bearing bush splitting height detection fixture, the bearing bush is restored to its initial state using an arc-shaped positioning groove and an arc-shaped clamping surface. Combined with the detection reference surface, the measurement is performed, which solves the measurement deviation and low efficiency problems caused by deformation after bearing bush splitting, and achieves high-precision and fast measurement results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN FANZHOU ZHONGYUE ALLOY MATERIALS CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing technology, after the bearing bush is split, the wall thickness is relatively thin, and the deformation is caused by the release of internal stress in the material. The measurement results have a large deviation from the actual size, and the measurement efficiency is low.
A bearing bush split height detection fixture is used to restore the bearing bush to its initial circular state through an arc positioning groove and an arc-shaped clamping surface. Measurement is then performed in conjunction with the detection reference surface to eliminate deformation errors and improve measurement accuracy and efficiency.
It effectively eliminates measurement errors caused by bearing deformation, improves measurement accuracy and efficiency, reduces equipment costs, and meets the needs for fast and accurate measurement.
Smart Images
Figure CN224246931U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bearing product split height detection technology, and in particular to a bearing split height detection tooling and system. Background Technology
[0002] As a core component of sliding bearings, the accuracy of the split height dimension of the bearing shell directly affects the assembly quality and performance of the bearing. Currently, the industry commonly uses coordinate measuring machines (CMMs) to inspect the height of the split bearing shell. However, because the wall thickness of the bearing shell is relatively thin after splitting, it is prone to deformation due to the release of internal material stress, resulting in a significant deviation between the CMM measurement results and the actual dimensions. This deviation not only fails to accurately reflect the processing quality of the bearing shell but may also mislead process adjustments on the production floor, affecting the final assembly effect of the product.
[0003] Furthermore, coordinate measuring machine (CMM) inspection is complex, inefficient, and expensive, and the long-term occupation of CMM resources leads to increased inspection costs and decreased economic benefits for enterprises. Therefore, existing inspection methods are insufficient to meet the needs of enterprises for rapid and accurate measurement of bearing split height. Summary of the Invention
[0004] This application provides a tooling and system for detecting the split height of bearing bushes, in order to solve the problem in related technologies that, due to the thin wall thickness of bearing bushes after splitting, the product is prone to deformation due to the release of internal stress in the material, resulting in a large deviation between the measured split height of the bearing bushes and the actual size, and low measurement efficiency.
[0005] Firstly, a tooling for detecting the split height of a bearing bush is provided, comprising:
[0006] Base
[0007] A positioning block is fixedly mounted on the base. The top of the positioning block has an arc-shaped positioning groove, and the side wall of the positioning block has a detection reference surface. The detection reference surface is tangent to the vertex of the arc-shaped positioning groove.
[0008] The pressure block has an arc-shaped pressing surface for pressing the bearing bush to fit the arc-shaped positioning groove.
[0009] In some embodiments, the sidewall of the positioning block is provided with a first cavitation detection position, which is a recessed structure and located on the same side of the positioning block as the detection reference surface.
[0010] In some embodiments, the end of the pressure block is provided with a second forced-air detection position.
[0011] In some embodiments, after the pressure block is placed on the arc positioning groove, the second forced-air detection position and the first forced-air detection position form a continuous measurement avoidance space.
[0012] In some embodiments, a clamping assembly is also included, the clamping assembly comprising a base and a clamping part, the base being fixed on the base and the clamping part being inserted into the base.
[0013] In some embodiments, the clamping part includes a clamping rod threadedly connected to the base, and a clamping wrench is fixedly connected to the top of the clamping rod.
[0014] In some embodiments, the arc-shaped positioning groove is provided with an elastic positioning pin, which is used to insert into the mounting hole of the bearing bush.
[0015] In some embodiments, the resilient locating pin is tapered, and the diameter of one end near the locating block is larger than the diameter of the other end.
[0016] Secondly, a bearing split height detection system is provided, including the bearing split height detection fixture and a measuring tool, which is used to measure the bearing split height after the detection reference plane is zeroed.
[0017] In some embodiments, the measuring tool is a digital height gauge.
[0018] This application provides a fixture for detecting the split height of a bearing bush. The bearing bush is placed in an arc-shaped positioning groove that matches the outer circle of the bearing bush. A pressure block presses the bearing bush firmly onto the positioning block, with the arc-shaped pressing surface of the pressure block matching the inner circle of the bearing bush, restoring the bearing bush to its initial circular state before splitting. After zeroing the detection reference surface, the measuring tool directly measures the split height of the bearing bush. Because the detection reference surface is tangent to the apex of the arc-shaped positioning groove, the apex reference of the bearing bush is transformed into the detection reference surface, and the measured height is the actual height dimension of the product after splitting. Therefore, this fixture can effectively eliminate measurement errors caused by bearing bush deformation, improve measurement accuracy, and increase measurement efficiency through the establishment of the detection reference surface. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the bearing split height detection fixture provided in the embodiments of this application;
[0021] Figure 2 This is a partial disassembly diagram of the bearing split height detection fixture provided in an embodiment of this application.
[0022] In the diagram: 1. Base; 2. Positioning block; 21. Arc positioning groove; 22. Detection reference surface; 23. First forced-out detection position; 24. Elastic positioning pin; 3. Pressure block; 31. Arc-shaped pressing surface; 32. Second forced-out detection position; 4. Pressing assembly; 41. Base; 42. Pressing part; 421. Pressing rod; 422. Pressing wrench. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] This application provides a tooling and system for detecting the split height of bearing bushes, which can solve the problem in related technologies that, due to the thin wall thickness of bearing bushes after splitting, the product is prone to deformation due to the release of internal stress in the material, resulting in a large deviation between the measured split height of the bearing bushes and the actual size, as well as low measurement efficiency.
[0025] like Figure 1 , Figure 2 As shown, a bearing bush split height detection fixture includes:
[0026] Base 1,
[0027] Positioning block 2 is fixedly mounted on base 1. The top of positioning block 2 is provided with arc positioning groove 21, and the side wall of positioning block 2 is provided with detection reference surface 22. The detection reference surface 22 is tangent to the vertex of arc positioning groove 21.
[0028] The pressure block 3 has an arc-shaped pressing surface 31, which is used to press the bearing bush so that it fits the arc-shaped positioning groove 21.
[0029] Because the bearing shell has a thinner wall after splitting, it is in a non-circular state due to the release of internal material stress, and the opening width is not the theoretical width. To solve this problem, the bearing shell is placed in the arc-shaped positioning groove 21, which matches the outer circle of the bearing shell. The arc-shaped pressing surface 31 of the pressure block 3 matches the inner circle of the bearing shell. The pressure block 3 presses the bearing shell onto the positioning block 2, restoring the bearing shell to its initial circular state before splitting. The opening size of the bearing shell can be restored to close to the theoretical opening size. After the measuring tool is zeroed on the detection reference surface 22, the split height of the bearing shell is directly measured. Since the detection reference surface 22 is tangent to the vertex of the arc-shaped positioning groove 21, the vertex reference of the bearing shell is transformed into the detection reference surface, and the measured height is the actual height dimension of the product after splitting. Therefore, this tooling can effectively eliminate the measurement error caused by bearing shell deformation, improve measurement accuracy, and improve measurement efficiency by setting the detection reference surface.
[0030] Optionally, the side wall of the positioning block 2 is provided with a first cavitation detection position 23, which is a recessed structure and is located on the same side of the positioning block 2 as the detection reference surface 22.
[0031] Optionally, the end of the pressure block 3 is provided with a second forced air detection position 32.
[0032] Optionally, after the pressure block 3 is placed on the arc positioning groove 21, the second forced-air detection position 32 and the first forced-air detection position 23 form a continuous measurement avoidance space.
[0033] To facilitate operation and observation and avoid measurement interference, a clearance detection position can be set. This position can be located in different places, such as on the side wall of positioning block 2 or the end of pressure block 3, or simultaneously on both positioning block 2 and pressure block 3, forming a continuous clearance space for easier detection. In this embodiment, a first clearance detection position 23 is set on the side wall of positioning block 2, and a second clearance detection position 32 is set at the end of pressure block 3. After pressure block 3 is placed on the arc positioning groove 21, the second clearance detection position 32 and the first clearance detection position 23 form a continuous measurement clearance space, providing clearance space for measuring tools such as dial indicators and height gauges, preventing collisions or obstructions with positioning block 2 during measurement, and ensuring a smooth measurement process. Because the clearance detection position is a recessed structure, obstacles on the measurement path are reduced, allowing measuring tools to more accurately align with the bearing's split surface, reducing measurement errors caused by structural obstruction, and improving the reliability of the detection data. Furthermore, it is applicable to different measurement methods, such as contact or non-contact methods, increasing the applicability and flexibility of the tooling.
[0034] Optionally, it also includes a clamping assembly 4, which includes a base 41 and a clamping part 42. The horizontal projection of the clamping part 42 on the positioning block 2 is located on the top of the arc of the arc positioning groove 21. The base 41 is fixed on the base 1, and the clamping part 42 is inserted into the base 41.
[0035] The clamping component 4 provides a more stable and adjustable clamping force, ensuring that the bearing bush fits tightly against the arc positioning groove 21 during measurement, reducing measurement errors caused by loosening or offset. The horizontal projection of the clamping part 4 on the positioning block 2 is located on the top of the arc of the arc positioning groove 21, ensuring that the clamping force acts directly on the geometric center of the bearing bush, so that the bearing bush is evenly stressed, avoiding torsional deformation caused by eccentric stress, and more accurately restoring it to the initial circular state, thus improving measurement accuracy.
[0036] Optionally, the clamping part 42 includes a clamping rod 421 threadedly connected to the base 41, and a clamping wrench 422 is fixedly connected to the top of the clamping rod 421.
[0037] The clamping wrench 422 is designed for easy manual application of force, allowing for quick tightening or loosening without the need for additional tools. Rotating the clamping wrench 422 precisely adjusts the clamping force, ensuring the bearing bush is securely clamped without excessive pressure causing plastic deformation, thus guaranteeing measurement accuracy. Because the threaded connection of the clamping rod 421 has a self-locking characteristic, it automatically maintains stable pressure after clamping, preventing loosening due to vibration or external force during measurement and ensuring the bearing bush always conforms to the arc-shaped positioning groove 21.
[0038] Optionally, the arc positioning groove 21 is provided with an elastic positioning pin 24, which is located on the top of the arc of the arc positioning groove 21 and is used to insert the bearing bush into the mounting hole.
[0039] The flexible locating pin 24 engages with the mounting hole of the bearing bush to ensure that the bearing bush always maintains the correct position within the arc-shaped locating groove 21, avoiding positioning errors caused by the sliding or rotation of the bearing bush during measurement and improving detection accuracy. The flexible design can buffer the clamping force, preventing the rigid locating pin from scratching or deforming the mounting hole of the bearing bush and protecting the surface quality of the workpiece.
[0040] Optionally, the elastic locating pin 24 is tapered, and the diameter of one end near the locating block 2 is larger than the diameter of the other end.
[0041] The tapered design gives the elastic locating pin 24 a self-guiding function, automatically guiding the mounting hole to alignment during bearing installation. Even slight positional deviations can be quickly corrected, improving clamping efficiency. Furthermore, the tapered design is compatible with a certain range of hole diameter variations, adapting to the bearing mounting hole tolerances through elastic deformation, ensuring reliable positioning while avoiding installation difficulties caused by interference fits.
[0042] A bearing split height detection system includes a bearing split height detection fixture and a measuring tool, which is used to measure the bearing split height after the detection reference plane 22 is zeroed.
[0043] In certain specific implementation scenarios, various types of measuring tools can be selected to meet measurement needs, broadly categorized into two types: contact and non-contact. Contact tools include digital height gauges or dial indicators, while non-contact tools can include laser rangefinders or optical image measuring instruments.
[0044] In this application, the measuring tool is a digital height gauge.
[0045] The working process of this utility model:
[0046] During testing, the product is placed on the arc-shaped positioning groove 21, the elastic positioning pin 24 passes through the center hole of the product, and the arc-shaped pressing surface 31 of the pressure block 3 is placed on the upper surface of the product. The pressure wrench 422 is turned so that the pressure block 3 presses the product tightly against the arc-shaped positioning groove 21, so that the product returns to the theoretical product diameter, i.e., the circular state. After the digital height gauge is set to zero on the testing reference surface 22, the split height of the bearing is directly measured. Since the testing reference surface 22 is tangent to the vertex of the arc-shaped positioning groove 21, the vertex reference of the bearing is transformed into the testing reference surface. The measured height is the actual height dimension of the product after splitting. After the test is completed, the pressure wrench 422 is loosened, the pressure block 3 is removed, and the product can be taken out to complete the test.
[0047] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0048] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0049] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A tooling for detecting the split height of a bearing bush, characterized in that, It includes: Base (1), A positioning block (2) is fixedly mounted on the base (1). The top of the positioning block (2) is provided with an arc positioning groove (21), and the side wall of the positioning block (2) is provided with a detection reference surface (22). The detection reference surface (22) is tangent to the vertex of the arc positioning groove (21). The pressure block (3) has an arc-shaped pressing surface (31) for pressing the bearing bush to fit the arc positioning groove (21).
2. The bearing bush split height detection fixture as described in claim 1, characterized in that: The positioning block (2) has a first cavitation detection position (23) on its side wall. The first cavitation detection position (23) is a recessed structure and is located on the same side of the positioning block (2) as the detection reference surface (22).
3. The bearing bush split height detection fixture as described in claim 2, characterized in that: The end of the pressure block (3) is provided with a second forced air detection position (32).
4. The bearing bush split height detection fixture as described in claim 3, characterized in that: After the pressure block (3) is placed on the arc positioning groove (21), the second forced-air detection position (32) and the first forced-air detection position (23) form a continuous measurement avoidance space.
5. The bearing bush split height detection fixture as described in claim 1, characterized in that: It also includes a clamping assembly (4), which includes a base (41) and a clamping part (42). The base (41) is fixed on the base (1), and the clamping part (42) is inserted into the base (41).
6. The bearing bush split height detection fixture as described in claim 5, characterized in that: The clamping part (42) includes a clamping rod (421) threadedly connected to the base (41), and a clamping wrench (422) is fixedly connected to the top of the clamping rod (421).
7. The bearing bush split height detection fixture as described in claim 1, characterized in that: The arc positioning groove (21) is provided with an elastic positioning pin (24), which is used to insert into the mounting hole of the bearing bush.
8. The bearing bush split height detection fixture as described in claim 7, characterized in that: The elastic positioning pin (24) is conical, and the diameter of one end near the positioning block (2) is larger than the diameter of the other end.
9. A bearing bush split height detection system, characterized in that, The fixture includes the bearing split height detection tool as described in any one of claims 1 to 8, and also includes a measuring tool for measuring the bearing split height after the detection reference plane (22) is zeroed.
10. The bearing bush split height detection system as described in claim 9, characterized in that, The measuring tool is a digital height gauge.