Bearing tilting moment detection tool
By designing a multifunctional bearing tilting torque detection fixture, the problems of limited functionality and insufficient simulation capabilities of existing testing equipment have been solved, enabling high-precision bearing tilting torque detection and providing more accurate mechanical data support.
Patent Information
- Application Number
- CN202520846912.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-04-29
AI Technical Summary
Existing bearing tilting torque testing fixtures have limited functionality and cannot simulate axial load conditions at different angles, resulting in test results that are out of sync with actual operating conditions.
A multifunctional testing fixture was designed, comprising a mandrel, a tooling sleeve, a first testing component, a second testing component, and a drive component. It can flexibly switch between applying axial, radial, and combined loads, and simulate the actual operating conditions of the bearing through the drive component.
It achieves high-precision, multi-functional bearing tilting torque detection, provides more realistic mechanical data, and enhances the engineering application value of the detection results.
Smart Images
Figure CN224004565U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing testing tooling technology, specifically a bearing tilting torque testing tooling. Background Technology
[0002] As a key component of mechanical transmission, the tilting moment parameter of bearings directly affects the operating performance of equipment, especially in fields such as aerospace and precision machinery, where accurate simulation of complex working conditions is required for testing. However, existing bearing tilting moment testing fixtures have significant shortcomings: on the one hand, their testing functions are limited, with most fixtures only able to apply loads in a single direction, making it difficult to achieve flexible switching and coordinated loading of axial, radial, and combined loads; on the other hand, they cannot simulate axial load conditions applied at different angles, while in actual applications, bearings are often subjected to axial forces from multiple angles. The testing data from traditional fixtures are severely out of sync with real working conditions, leading to distorted test results. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a bearing tilting torque detection fixture, which solves the problem that traditional bearing tilting torque detection fixtures have limited detection functions and cannot simulate axial load conditions applied at different angles.
[0004] To achieve the above objectives, this utility model provides a bearing tilting torque detection fixture, including a mandrel and a fixture sleeve fitted at the beginning of the mandrel. A mounting groove is formed between the shaft hole of the fixture sleeve and the outer peripheral wall of the mandrel for mounting an external bearing to be tested. A first detection component is detachably connected to the fixture sleeve for applying a load to the fixture sleeve and detecting the displacement of the fixture sleeve to achieve the detection of the tilting force of the bearing to be tested. A second detection component is detachably connected to the fixture sleeve for applying an axial load, a radial load, or a axial-radial load to the bearing to be tested and detecting the torque on the mandrel. A drive component is provided at the end of the mandrel for axially rotating with the drive mandrel to simulate the actual operating conditions of the bearing to be tested.
[0005] The advantages of adopting the above technical solution are: the detachable first and second detection components can be quickly switched according to detection needs; the first detection component applies load and monitors the displacement of the tooling sleeve to achieve specialized detection of bearing tilting torque; the second detection component supports flexible application of axial, radial, and axial-radial combined loads, and works with the drive component at the end of the mandrel to simulate the axial rotation condition of the bearing during actual operation. This multi-functional integrated design significantly improves the applicability of the tooling, avoids the disconnect between traditional static detection and actual operating conditions, and the introduction of the drive component upgrades the detection process from static load testing to dynamic operating condition simulation. This allows the second detection component to capture the torque fluctuations caused by changes in contact angle and raceway deformation during bearing rotation, providing more realistic mechanical data for bearing design optimization and greatly enhancing the engineering application value of the detection results.
[0006] The present invention further comprises: the first detection component includes a first loading cylinder and a displacement sensor, the output end of the first loading cylinder is detachably connected to the left side wall of the tooling sleeve, and the detection end of the displacement sensor is abutted against the right side wall of the tooling sleeve.
[0007] The advantages of adopting the above technical solution are as follows: In the above technology, the first detection component adopts a linkage design between the first loading cylinder and the displacement sensor to construct a high-precision tilting torque detection closed-loop system. The first loading cylinder is rigidly coupled to the left side wall of the tooling sleeve through a detachable connection, which can accurately control the magnitude and direction of the tilting load. Its output end's dynamic loading capability meets the simulation requirements of various complex working conditions such as sine wave and step load. The right displacement sensor collects the micro-displacement signal of the tooling sleeve in real time, thereby realizing the quantification and automation of the detection process. The detachable connection between the output end of the first loading cylinder and the tooling sleeve in the above technology is an existing technology. It can be a threaded connection, a bolt connection, or a guide arm connection. Since it is an existing technology, its structure and function will not be described in detail. In the above technology, both the first loading cylinder and the displacement sensor are existing technologies, so their structure and function will not be described in detail.
[0008] The present invention further comprises: the second detection component including a connecting sleeve, a second loading cylinder and a third loading cylinder; the inner peripheral wall of the shaft hole of the connecting sleeve is threadedly connected to the outer peripheral wall of the tooling sleeve; a connecting plate for closing the left opening of the shaft hole of the connecting sleeve is provided at the left opening of the shaft hole; the connecting plate is integrally connected to the left side wall of the connecting sleeve; the connecting plate is coaxially arranged with the connecting sleeve and a first connecting hole for detachably connecting to the output end of the second loading cylinder is provided at the axial center of the outer wall surface of the connecting plate; a second connecting hole for detachably connecting to the output end of the third loading cylinder is provided on the outer peripheral wall of the connecting sleeve; and the second detection component further includes a torque sensor for linkage with the mandrel.
[0009] The advantages of adopting the above technical solution are as follows: The second detection component, through the innovative combination of a threaded connecting sleeve and a multi-directional loading cylinder, achieves coordinated loading of axial and radial loads and accurate torque measurement. The threaded connection structure between the connecting sleeve and the tooling sleeve supports quick assembly and disassembly, allowing for tool-free switching or combination of axial (second loading cylinder) and radial (third loading cylinder) detection modules, significantly shortening tooling debugging time. Specifically, the detachable connection between the second loading cylinder and the first connecting hole enables axial loading of the connecting sleeve when the second loading cylinder outputs a load, thereby achieving axial loading of the bearing under test. Similarly, the detachable connection between the third loading cylinder and the second connecting hole enables radial loading of the connecting sleeve when the third loading cylinder outputs a load, thereby achieving radial loading of the bearing under test. The second loading cylinder can also be... Both the second and third loading cylinders are detachably connected to the connecting sleeve to achieve axial and radial loading of the bearing under test, meeting the mechanical performance testing requirements of the bearing under cross-load conditions. The matching torque sensor is rigidly linked with the spindle, which can collect the torque signal of the bearing under combined load in real time. The load-torque-speed parameters are recorded synchronously through the data acquisition system, providing multi-dimensional data for analyzing the bearing raceway contact stress and lubrication state changes. The second and third loading cylinders and the torque sensor mentioned above are all existing technologies, so their structure and function will not be described in detail. The detachable connection between the output end of the second loading cylinder and the third loading cylinder mentioned above is also existing technology. It can be a threaded connection, a bolt connection, or a guide arm connection. Since it is existing technology, its structure and function will not be described in detail.
[0010] The present invention further includes the following features: the radial cross-section of the outer wall of the connecting plate is arc-shaped, and several third connecting holes are evenly distributed on the outer wall of the connecting plate for disassembly and reassembly of the output end of the second loading cylinder.
[0011] The advantages of adopting the above technical solution are: the evenly distributed third connecting holes in the above technology support the installation of the second loading cylinder in the circumferential position, which can realize the application of axial load at any angle within a large range, perfectly reproduce the multi-angle stress conditions of the bearing in mechanical transmission caused by installation errors and component deformation, and accurately locate the stress concentration area of the bearing raceway by comparing the torque data under different angle loading, providing key testing basis for improving the fatigue life of the bearing, and significantly expanding the working condition simulation capability and industry applicability of the tooling.
[0012] The present invention further includes a drive motor coaxially connected to the end of the mandrel.
[0013] The advantages of adopting the above technical solution are: the coaxial connection design of the drive motor and the mandrel in the above technology simulates the actual operating conditions of the bearing. The introduction of the drive component makes the test results directly correspond to the actual working state of the bearing, avoiding the problem of disconnect between static test data and engineering applications, and greatly improving the technical advancement and practicality of the test tooling; in order to ensure that the drive motor and the mandrel can be detachably connected, a coupling can be connected between the two, thereby improving the coaxiality of the connection and facilitating the disassembly and replacement of mandrels of different sizes.
[0014] The present invention further includes two support seats, each of which has a through hole for the mandrel to pass through and rotatably connected to the mandrel. The through hole is coaxial with the mandrel. The two support seats are arranged opposite to each other, with one support seat located near the center of the mandrel and the other support seat located near the end of the mandrel.
[0015] The advantages of adopting the above technical solution are: the coaxial support structure of the double support base provides a high-precision rigid support system for the rotation of the spindle. The two support bases are rotatably connected to the spindle through precision-machined coaxial rotating holes. The support base near the center bears the main radial load, while the end support base balances the axial reaction force of the drive motor, forming a stable two-point support structure. Attached Figure Description
[0016] Figure 1 This is a simplified cross-sectional view of the mandrel, tooling sleeve, and their linkage structure in the engagement state of this utility model.
[0017] Figure 2 for Figure 1 Simplified cross-sectional view of the first detection component installed;
[0018] Figure 3 for Figure 1 Simplified sectional view of the unit with the second loading cylinder installed;
[0019] Figure 4 for Figure 1 A simplified sectional view showing the first loading cylinder installed.
[0020] Figure 5 for Figure 1 A simplified sectional view showing the installation of the first and second loading cylinders;
[0021] Figure 6 for Figure 1 A simplified sectional view of an eccentrically mounted second loading cylinder. Detailed Implementation
[0022] This utility model provides a bearing tilting torque detection fixture, including a mandrel 1 and a fixture sleeve 11 sleeved at the beginning of the mandrel 1. A mounting groove 111 is formed between the shaft hole of the fixture sleeve 11 and the outer peripheral wall of the mandrel 1 for mounting an external bearing to be tested. A first detection component is detachably connected to the fixture sleeve 11 for applying a load to the fixture sleeve 11 and detecting the displacement of the fixture sleeve 11 to achieve the detection of the tilting force of the bearing to be tested. A fixture sleeve 11 is also detachably connected to apply an axial load, a radial load, or a axial-radial load to the bearing to be tested and detect the torque on the mandrel 1. The second detection component includes a drive component at the end of the mandrel 1 for axial rotation with the drive mandrel 1 to simulate the actual operating conditions of the bearing under test. The first detection component includes a first loading cylinder 2 and a displacement sensor 21. The output end of the first loading cylinder 2 is detachably connected to the left side wall of the tooling sleeve 11, and the detection end of the displacement sensor 21 abuts against the right side wall of the tooling sleeve 11. The second detection component includes a connecting sleeve 3, a second loading cylinder 31, and a third loading cylinder 32. The inner circumferential wall of the shaft hole of the connecting sleeve 3 is threadedly connected to the outer circumferential wall of the tooling sleeve 11. A connecting plate 33 is provided at the left opening of the shaft hole of the connecting sleeve 3 to close the left opening of the shaft hole. The connecting plate 33 is integrally connected to the left side wall of the connecting sleeve 3. The connecting plate 33 is coaxially arranged with the connecting sleeve 3, and a first connecting hole 311 for detachable connection with the output end of the second loading cylinder 31 is opened at the axial center of the outer wall surface of the connecting plate 33. A second connecting hole 321 for detachable connection with the output end of the third loading cylinder 32 is opened on the outer peripheral wall of the connecting sleeve 3. The second detection component also includes a torque sensor 12 for linkage with the spindle 1. The outer wall of the plate 33 has a radial cross-section that is arc-shaped, and the outer wall of the connecting plate 33 is evenly distributed with a number of third connecting holes 331 for disassembly and detachment of the output end of the second loading cylinder 31. The drive assembly includes a drive motor 13 coaxially connected to the end of the spindle 1, and also includes two support seats 4. Each of the two support seats 4 has a through hole for the spindle 1 to pass through and rotate in connection with the spindle 1. The through hole is coaxially arranged with the spindle 1. The two support seats 4 are arranged opposite to each other, with one support seat 4 located near the center of the spindle 1 and the other support seat 4 located near the end of the spindle 1.
[0023] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.
Claims
1. A bearing tilt moment detection tool, characterized by: The utility model provides a bearing testing device, including mandril and tool cover set in the mandril beginning position, the axle hole and the outer wall wall between mandril of tool cover form the installation groove of outside the installation of bearing to be detected, the first detection component that can detachably connect is used to the tool cover of load to tool cover and detects the displacement of tool cover to realize to the first detection component of bearing to be detected tilt force detection, the second detection component that can detachably connect is used to the tool cover of axial load or radial load or axial radial load to the bearing of trial and the second detection component of torque that mandril is suffered, the driving assembly that the mandril end is provided for with driving mandril axial rotation to make bearing to be detected simulate actual operation working condition.
2. The bearing tilt moment detection tool of claim 1, wherein: The first detection component includes a first loading cylinder and a displacement sensor, the output end of the first loading cylinder is detachably connected with the left side wall of the tool cover, and the detection end of the displacement sensor is abuttingly arranged with the right side wall of the tool cover.
3. The bearing tilt moment detection tool of claim 1, wherein: The second detection component includes a connecting sleeve, a second loading cylinder and a third loading cylinder, the inner peripheral wall of the shaft hole of the connecting sleeve is threadedly connected with the outer peripheral wall of the tool cover, a connecting plate for closing the left side opening of the shaft hole of the connecting sleeve is arranged at the left side opening of the shaft hole of the connecting sleeve, the connecting plate is integrally connected with the left side wall of the connecting sleeve, the connecting plate is coaxially arranged with the connecting sleeve, and a first connecting hole for detachably connecting with the output end of the second loading cylinder is arranged at the axial center of the outer wall surface of the connecting plate, a second connecting hole for detachably connecting with the output end of the third loading cylinder is arranged on the outer peripheral wall of the connecting sleeve, and the second detection component further includes a torque sensor for linkage cooperation with the mandril.
4. The bearing tilt moment detection tool of claim 3, wherein: The radial section of the outer wall of the connecting plate is in the shape of a circular arc, and a plurality of third connecting holes for detachably connecting with the output end of the second loading cylinder are uniformly arranged on the outer wall of the connecting plate.
5. The bearing tilt moment detection tool of claim 1, wherein: The driving assembly includes a driving motor coaxially connected with the end of the mandril.
6. The bearing tilt moment detection tool of claim 1, wherein: Two support seats are further included, a rotating hole for penetrating the mandril and rotationally connecting with the mandril is arranged on each of the two support seats, the rotating hole is coaxially arranged with the mandril, and one of the two support seats is arranged close to the central part of the mandril, and the other support seat is arranged close to the end of the mandril.