Rolling bearing radial load torque testing machine

Abstract

The utility model discloses a rolling bearing radial load torque testing machine, which comprises a base, a driving seat and a tool seat, the driving seat and the tool seat are arranged on the base, the driving seat is provided with a mandrel and a driving part used for driving the mandrel to operate, and the tool seat is rotatably provided with a static pressure main shaft. A mounting structure for mounting an external to-be-detected bearing so as to enable the to-be-detected bearing to run when the core shaft runs is arranged between the static pressure main shaft and the core shaft, and a loading structure which is used for being in linkage fit with the mounting structure to apply a radial load to the mounting structure so as to simulate the working condition of the radial load moment borne by the bearing in actual running is arranged on the base. The static pressure main shaft is provided with a detection structure used for detecting the friction torque value of the to-be-tested bearing in operation. The utility model solves the problem that the prior art lacks a rolling bearing radial load torque testing machine which is simple in operation and simple in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing test frock technical field, concretely is a kind of rolling bearing radial load torque testing machine. BACKGROUND

[0002] In modern industrial field, as key mechanical transmission components, rolling bearings are widely used in automobile, aerospace, mechanical manufacturing and many other industries, and radial load torque is an important index to measure the running performance of rolling bearings under radial load, and accurate detection of radial load torque of rolling bearings is of great significance to the design, manufacture, quality control and working condition evaluation of bearings, at present, there are many types of detection equipment for radial load torque of rolling bearings on the market, and the existing rolling bearing radial load torque test equipment has complex structure, contains a large number of mechanical transmission components, hydraulic system or pneumatic system and complex electric control unit, resulting in high equipment cost, large size, complicated installation and debugging, high technical requirements for operators, inconvenient operation in actual use, and the detection function of some equipment is single, only single working condition detection can be carried out, which cannot meet the detection needs of different types and different specifications of rolling bearings under various complex working conditions. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a rolling bearing radial load torque testing machine to solve the problem of lack of simple operation and simple structure in the prior art.

[0004] To achieve the above purpose, the utility model provides a rolling bearing radial load torque testing machine, which comprises a base, a driving seat and a frock seat arranged on the base, a mandrel and a driving part for driving the mandrel to rotate are arranged on the driving seat, a static pressure spindle is rotatably arranged on the frock seat, an installation structure is arranged between the static pressure spindle and the mandrel for mounting the bearing to be detected to run when the mandrel rotates, a loading structure is arranged on the base for linkage with the installation structure to apply radial load to the installation structure to simulate the radial load torque working condition of the bearing in actual operation, and a detection structure is arranged on the static pressure spindle for detecting the friction torque value of the bearing to be tested when running.

[0005] The beneficial effects of the above technical scheme are as follows: in the above technology, the base integrates the driving seat and the tool seat to form a modular detection platform, the mandrel and the static pressure spindle are linked through the mounting structure, and the driving piece can directly drive the bearing to be detected to simulate the actual running state when driving the mandrel to rotate, the mounting structure and the mounting structure are linked and matched, the radial load can be accurately applied to simulate the actual running radial load torque condition of the bearing, and the detection deviation problem caused by inaccurate loading of the existing equipment is avoided; the detection structure is directly integrated into the static pressure spindle, the friction torque value of the bearing during running can be obtained in real time, the simple mechanical transmission structure is matched, the equipment operation process is simplified, the installation and debugging difficulty is reduced through the modular layout, and the technical problems of complex equipment structure, inconvenient operation and inaccurate working condition simulation in the prior art are effectively solved.

[0006] The utility model further sets up: the mounting structure includes tool cover and is used for with static pressure spindle beginning end detachable connection's connecting disc, the connecting disc extends the connecting ring to the mandrel direction, the connecting ring is set in the mandrel beginning end periphery, the connecting ring inner peripheral wall and the mandrel outer peripheral wall gap fit and form the installation cavity that installs outside the bearing to be tested, the mandrel beginning end outer peripheral wall is provided with the baffle, the baffle is provided with the test ring, the test ring is set in the connecting ring periphery and the test ring inner peripheral wall and the connecting ring outer peripheral wall gap fit setting, the tool cover is set in the test ring periphery and the tool cover inner peripheral wall and the test ring outer peripheral wall are connected with the test bearing, the tool cover and loading structure link and match setting.

[0007] The beneficial effects of the above technical scheme are as follows: in the above technology, the mounting structure is connected with the static pressure spindle through the detachable connecting disc, different specifications of the bearing to be detected can be quickly replaced, and the universality of the equipment is improved; the connecting ring and the mandrel are gap fitted to form an independent installation cavity, the positioning accuracy of the bearing installation is ensured, rigid contact is avoided to generate additional resistance, the purity of the detection data is ensured, the baffle and the test ring form an auxiliary support structure, the tool cover and the test ring are flexibly connected through the test bearing, the radial load of the loading structure can be uniformly transmitted to the bearing to be detected, the detection error caused by uneven load distribution is reduced, the direct wear of the tool cover and the mandrel is reduced, and the service life of the equipment is prolonged.

[0008] The utility model further sets up: the loading structure includes setting on the base loading cylinder, the loading cylinder output end and tool cover are opposite vertical setting and loading cylinder output end coaxial connection is used for with tool cover outer peripheral wall contact's loading disc.

[0009] The advantages of adopting the above technical solution are as follows: The loading structure in the above technology uses a loading cylinder that is perpendicular to the tooling sleeve. Its output end is coaxially connected to the loading disk and contacts the outer peripheral wall of the tooling sleeve, forming a linear radial loading mode. Compared with the traditional complex hydraulic / pneumatic loading system, this structure directly transmits the load through rigid contact, avoiding the pressure fluctuation problem of the fluid system. The load application process is more stable and easier to control. At the same time, the fixed connection between the loading cylinder and the base simplifies the mechanical transmission chain, reduces redundant parts, makes the equipment structure more compact, and reduces manufacturing and maintenance costs. Moreover, during operation, only the output of the loading cylinder needs to be controlled to accurately adjust the radial load, which significantly improves the loading efficiency and the accuracy of the working condition simulation.

[0010] The present invention further includes: a detection disk at the end of the hydrostatic spindle, two detection plates on the outer peripheral wall of the detection disk, the two detection plates being arranged on the same horizontal line and parallel to the base; the detection structure including a force sensor and a counterweight; steel wire ropes connected to both detection plates, one of which is flexibly connected to the counterweight, and the other is flexibly connected to the output end of the force sensor.

[0011] The advantages of adopting the above technical solution are as follows: The detection structure in the above technology uses a horizontal detection plate on the outer periphery of the detection disk to connect a steel wire rope. A torque balance detection system is formed by a force sensor and a counterweight. This mechanical detection method does not require a complicated electronic sensor calibration procedure. The friction torque value is calculated in real time through the lever principle. The detection principle is intuitive and low cost. The two detection plates are set horizontally and symmetrically to ensure that the tension direction of the steel wire rope is perpendicular to the axis of the hydrostatic spindle, avoiding torque detection errors caused by angular deviation. The soft connection design reduces the impact of rigid impact, making the detection process more stable and the detection data more accurate and reliable. It is especially suitable for dynamic detection of friction torque of high-precision bearings.

[0012] The present invention further includes the following configuration: the driving component includes a driving motor mounted on a driving base, and a coupling is connected between the output end of the driving motor and the spindle.

[0013] The advantages of adopting the above technical solution are: the drive component uses a drive motor connected to the spindle via a coupling, forming a simple electromechanical transmission system. The elastic connection characteristics of the coupling can effectively buffer the torque impact during motor start / stop, protecting the spindle and bearings from damage by rigid loads; the precise speed control and stable power output of the drive motor can provide constant operating conditions for the bearing under test, avoiding abnormal test data caused by speed fluctuations. At the same time, the modular motor mounting structure facilitates later maintenance and replacement, reducing downtime costs and improving testing efficiency.

[0014] The present invention further includes the following features: the base is provided with a plurality of adjustment grooves along the length of the mandrel, the plurality of adjustment grooves are arranged along the width of the base, the bottom of the drive seat and the bottom of the tooling seat are provided with a plurality of connecting bolts, and the adjustment grooves are provided with a plurality of hexagonal nuts for engaging with the connecting bolts.

[0015] The advantages of adopting the above technical solution are as follows: The base is provided with an adjustment groove along the spindle direction. Combined with the connecting bolts and hexagonal nuts at the bottom of the drive seat and tooling seat, an adjustable modular installation structure is formed. By adjusting the relative positions of the drive seat and tooling seat on the base, it can accommodate bearings of different sizes and specifications, meeting the testing requirements of multiple bearing models. The adjustment groove is arranged along the width diameter of the base, allowing for fine-tuning of the coaxiality of the spindle and hydrostatic spindle during testing. This avoids bearing jamming or uneven load caused by installation deviations, significantly improving the equipment's versatility and testing adaptability. It solves the technical defects of existing equipment, such as limited testing functions and poor specification adaptability. When position adjustment is required, the connecting bolt can be screwed in after adjusting the drive seat or tooling seat, so that the connecting bolt is threadedly connected to the hexagonal nut in the adjustment groove. Because the outer peripheral wall of the hexagonal nut abuts against the inner walls on both sides of the adjustment groove, the shaking of the drive seat and tooling seat is limited. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 for Figure 2 A magnified view of part A in the middle. Detailed Implementation

[0019] This utility model provides a rolling bearing radial load torque testing machine, including a base 1, a drive seat 11 and a fixture seat 12 mounted on the base 1. The drive seat 11 is provided with a mandrel 2 and a drive component for driving the mandrel 2. A hydrostatic spindle 3 is rotatably mounted on the fixture seat 12. A mounting structure is provided between the hydrostatic spindle 3 and the mandrel 2 for mounting an external bearing to be tested so that the bearing operates when the mandrel 2 rotates. The base 1 is provided with a loading structure that works in conjunction with the mounting structure to apply a radial load to the mounting structure to simulate the radial load torque condition experienced by the bearing during actual operation. The hydrostatic spindle 3 is provided with a mechanism for detecting friction during the operation of the bearing under test. The torque value detection structure includes a tooling sleeve 4 and a connecting plate 31 for detachable connection to the beginning of the hydrostatic spindle 3. The connecting plate 31 extends towards the spindle 2 with a connecting ring 311. The connecting ring 311 is sleeved around the beginning of the spindle 2. The inner circumferential wall of the connecting ring 311 is clearance-fitted with the outer circumferential wall of the spindle 2, forming a mounting cavity 312 for mounting an external bearing to be tested. A retaining edge 21 is provided on the outer circumferential wall of the beginning of the spindle 2. A test ring 22 is provided on the retaining edge 21. The test ring 22 is sleeved around the connecting ring 311, and the inner circumferential wall of the test ring 22 is clearance-fitted with the outer circumferential wall of the connecting ring 311. The tooling sleeve 4 is sleeved around the test ring 22. A test bearing 23 connects the inner peripheral wall of the 4-piece tooling sleeve 4 to the outer peripheral wall of the test ring 22. The tooling sleeve 4 is linked with the loading structure. The loading structure includes a loading cylinder 13 mounted on the base 1. The output end of the loading cylinder 13 is perpendicular to the tooling sleeve 4 and coaxially connected to a loading disk 131 for contacting the outer peripheral wall of the tooling sleeve 4. A detection disk 32 is provided at the end of the hydrostatic spindle 3. Two detection plates 321 are provided on the outer peripheral wall of the detection disk 32. The two detection plates 321 are arranged on the same horizontal line and are parallel to the base 1. The detection structure includes a force sensor 33 and a counterweight 34. Each measuring plate 321 is connected to a steel wire rope 322. One of the steel wire ropes 322 is flexibly connected to a counterweight 34, and the other steel wire rope 322 is flexibly connected to the output end of a force sensor 33. The driving component includes a drive motor 14 mounted on a drive base 11. A coupling 141 is connected between the output end of the drive motor 14 and the spindle 2. The base 1 has several adjustment slots 15 along the length of the spindle 2. The adjustment slots 15 are arranged along the width of the base 1. Several connecting bolts 16 are provided at the bottom of the drive base 11 and the bottom of the tooling base 12. Several hexagonal nuts 17 for cooperating with the connecting bolts 16 are provided in the adjustment slots 15.

[0020] The external bearing to be tested described in the above technology is identified as 5 in the accompanying drawings.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. 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 rolling bearing radial load torque testing machine, characterized in that: The device includes a base, a drive seat mounted on the base, and a fixture seat. The drive seat has a mandrel and a drive component for driving the mandrel. A hydrostatic spindle is rotatably mounted on the fixture seat. An installation structure is provided between the hydrostatic spindle and the mandrel for mounting an external bearing to be tested so that the bearing to be tested can run when the mandrel is running. The base has a loading structure for applying a radial load to the installation structure in conjunction with the installation structure to simulate the radial load torque condition experienced by the bearing during actual operation. The hydrostatic spindle has a detection structure for detecting the friction torque value of the bearing under test during operation.

2. The rolling bearing radial load torque testing machine according to claim 1, characterized in that: The mounting structure includes a tooling sleeve and a connecting plate for detachable connection to the beginning of the hydrostatic spindle. The connecting plate extends towards the spindle with a connecting ring. The connecting ring is sleeved around the beginning of the spindle. The inner peripheral wall of the connecting ring is clearance-fitted with the outer peripheral wall of the spindle, forming a mounting cavity for mounting an external bearing to be tested. The outer peripheral wall of the beginning of the spindle is provided with a retaining edge, and a test ring is provided on the retaining edge. The test ring is sleeved around the connecting ring, and the inner peripheral wall of the test ring is clearance-fitted with the outer peripheral wall of the connecting ring. The tooling sleeve is sleeved around the test ring, and a test bearing is connected between the inner peripheral wall of the tooling sleeve and the outer peripheral wall of the test ring. The tooling sleeve is linked and fitted with the loading structure.

3. A rolling bearing radial load torque testing machine according to claim 2, characterized in that: The loading structure includes a loading cylinder mounted on a base. The output end of the loading cylinder is perpendicular to the tooling sleeve, and a loading disk for contacting the outer peripheral wall of the tooling sleeve is coaxially connected to the output end of the loading cylinder.

4. A rolling bearing radial load torque testing machine according to claim 1, characterized in that: A detection disk is provided at the end of the hydrostatic spindle. Two detection plates are provided on the outer peripheral wall of the detection disk. The two detection plates are arranged on the same horizontal line and are parallel to the base. The detection structure includes a force sensor and a counterweight. Steel wire ropes are connected to both detection plates. One steel wire rope is flexibly connected to the counterweight, and the other steel wire rope is flexibly connected to the output end of the force sensor.

5. A rolling bearing radial load torque testing machine according to claim 1, characterized in that: The driving component includes a drive motor mounted on a drive base, and a coupling is connected between the output end of the drive motor and the spindle.

6. A rolling bearing radial load torque testing machine according to claim 1, characterized in that: The base has several adjustment slots along the length of the spindle, and the adjustment slots are arranged along the width of the base. The bottom of the drive seat and the bottom of the tooling seat are provided with several connecting bolts, and the adjustment slots are provided with several hexagonal nuts for cooperating with the connecting bolts.

Images