CN113820131B - Test device for measuring movement track of center of mass of retainer under combined load action by cantilever - Google Patents
Test device for measuring movement track of center of mass of retainer under combined load action by cantilever Download PDFInfo
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- CN113820131B CN113820131B CN202111146473.9A CN202111146473A CN113820131B CN 113820131 B CN113820131 B CN 113820131B CN 202111146473 A CN202111146473 A CN 202111146473A CN 113820131 B CN113820131 B CN 113820131B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
Abstract
The invention belongs to the technical field of rolling bearing tests, and solves the problem that the movement track of the center of mass of a retainer is difficult to acquire under combined load, and the solution is as follows: the test device comprises a frame, a driving device, a test shaft device, an axial loading device, a radial loading device and a shooting device. The driving electric spindle is fixed on the frame, the output shaft is meshed with the test shaft through a gear, the test shaft is arranged on the supporting platform, and the shaft is provided with a tested bearing. The auxiliary loading screw rod at the lower end of the radial tension pressure sensor is contacted with the outer ring of the bearing to be tested, and the upper end of the auxiliary loading screw rod is connected with the radial loading screw rod. The axial loading device is horizontally arranged on the supporting platform, contacts with the side surface of the outer ring of the bearing through a loading screw, and adjusts the loading screw to realize loading. The shooting device observes the motion state of the bearing retainer through the frame window. The test device designed by the invention realizes loading of the combined load, so that the bearing running environment is more similar to the actual working condition, the universality of the test equipment is improved, and the complexity of the operation process is reduced.
Description
Technical Field
The invention belongs to the technical field of rolling bearing testing devices, and particularly relates to a testing device for measuring a movement track of a center of mass of a retainer under the action of combined load by a cantilever.
Background
The bearing is one of important parts in mechanical equipment, the running state of the whole equipment is influenced by the running stability of the bearing, and the unstable running of the retainer is a key factor for causing the running instability of the bearing. When the bearing runs at high speed, the retainer is easy to vibrate freely due to the existence of the guide gap and the pocket gap, so that frequent collision is generated between the retainer, the inner ring, the outer ring and the rolling bodies, the moment of the bearing is increased, and the running accuracy of the whole bearing is affected. Therefore, by researching the centroid track of the retainer and taking the centroid track as the judgment basis of the running state and the stability of the retainer, the dynamic characteristic analysis of the bearing is realized.
At present, a mode of measuring a centroid movement track of a retainer mainly adopts a laser sensor, an eddy current sensor and the like, but the mode needs to process an outer ring of a bearing to damage the bearing, and the eddy current sensor can only measure a metal retainer and cannot measure retainers made of other nonmetallic materials such as nylon. Later, along with the technical development, people gradually adopt a high-speed camera shooting mode to measure, but the existing instrument can only measure the influence of radial load, axial load is difficult to load, operation is relatively complex, and universality is low. Therefore, the existing method has more limiting factors, and is difficult to truly reflect the centroid movement track of the retainer.
The invention provides the method for solving the problems that the motion trail of the mass center of the retainer cannot be accurately and effectively obtained during dynamic analysis of the high-speed rolling bearing and the existing equipment is difficult to load in a bidirectional combined load mode and the like.
Disclosure of Invention
Aiming at the problem that the existing equipment cannot realize the combined loading and the complex operation of the bearing, the invention provides a test device for the movement track of the center of mass of a retainer under the action of the cantilever combined load.
The invention solves the technical problems by adopting the scheme that: a test device for constructing a movement track of a center of mass of a retainer under the action of combined load, the device comprising: the drive device 2 (fig. 3), the test shaft device 3 (fig. 3), the radial loading device 5 (fig. 4), the axial loading device 6 (fig. 5), the frame 1 and the photographing device 4 (fig. 2).
The motorized spindle 2-1 of the driving device shown in fig. 1 to 3 is fixed on the bottom plate of the frame through a screw 2-2, the output shaft of the motorized spindle is meshed with a driven gear 3-3 arranged on a test shaft 3-1 through a driving gear 2-4, one side of the test shaft is provided with a tapered roller bearing pair 3-4 which is arranged in a bearing seat hole 1-2 of a supporting platform 1-1 on the frame, and the other side of the test shaft is provided with a tested bearing 3-2.
One end of the radial auxiliary loading screw 5-4 is in contact with the outer ring of the bearing 3-2 to be tested, the other end of the radial auxiliary loading screw is connected with the radial tension pressure sensor 5-3 through threads, the upper end of the radial tension pressure sensor 5-3 is in smooth connection with the radial loading screw 5-1-2, and the loading screw 5-1-2 is connected with the frame 1 through the threads 1-3.
The loading screw 6-1 fixed on the loading claw disc 6-2 in the axial loading device 6 is in contact with the outer ring side surface of the measured bearing 3-2, the loading claw disc 6-2 is connected with the connecting beam 6-4 through the screw 6-3, the connecting beam is connected with the axial tension pressure sensor 6-5 through threads, the other side of the axial tension pressure sensor 6-5 is connected with the guide groove mechanism 6-6 through threads, the guide head 6-7-1 of the axial loading screw is embedded in the guide groove 6-6-2, and the axial loading screw is connected with the rack through the threads 6-7-2.
The shooting device 4 observes the motion state of the measured bearing retainer through the frame window 1-3.
The invention has the advantages and positive effects that: the test device for measuring the centroid movement track of the retainer under the combined load action can simulate the working condition that the rolling bearing bears the combined axial and radial loads at the same time, greatly reduces the complexity of operation, provides conditions for testing the centroid track of the retainer of the rolling bearing under the combined working condition, and improves the universality of test equipment.
Drawings
The invention will be further described with reference to the accompanying drawings and the practice of the invention, wherein:
FIG. 1 is a test apparatus for cantilever type measurement of the movement trace of the center of mass of a cage under the action of a combined load according to the present invention;
fig. 2 is a schematic structural view of a frame and a photographing device according to the present invention;
FIG. 3 is a schematic diagram of the driving device and the test shaft device according to the present invention;
FIG. 4 is a schematic view of the radial loading device of the present invention;
FIG. 5 is a schematic view of the structure of the axial loading device of the present invention;
FIG. 6 is a schematic illustration of the connection of the axial load screw at A in FIG. 5;
FIG. 7 is a schematic illustration of the connection of the axial loading device at B in FIG. 5 to the bearing under test;
fig. 8 is a schematic diagram of a cage centroid trace measured using the device of the present invention.
In the figure: 1 is a frame, 1-1 is a supporting platform, 1-2 is a bearing seat, 1-3 is a frame window, 1-4 is a radial loading screw, 1-5 is an axial loading guide hole, 2 is a driving device, 2-1 is an electric spindle, 2-2 is a fixing screw, 2-3 is a driving shaft, 2-4 is a driving gear, 2-5 is a round nut, 3 is a test shaft device, 3-1 is a test shaft, 3-2 is a test bearing, 3-3 is a driven gear, 3-4 is a supporting bearing pair, 4 is a shooting device, 5 is a radial loading device, 5-1-1 is a radial loading hand wheel, 5-1-2 is a radial loading screw, 5-2 is a loading support, 5-3 is a radial tension pressure sensor, 5-4 is an auxiliary loading screw, 6-1 is a loading screw, 6-2 is a loading claw disc, 6-3 is a connecting screw and nut, 6-4 is a connecting beam, 6-5 is an axial tension sensor, 6-6 is a guide groove mechanism, 6-6-1 is a guide groove, 6-2 is a radial loading screw, 6-7 is an axial loading head, 6-7 is an axial loading screw, and 6-7 is an axial loading guide groove.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The test device for measuring the movement track of the center of mass of the retainer under the combined load by the cantilever type shown in fig. 1 to 6 comprises: the device comprises a frame 1, a driving device 2, a test shaft device 3, a shooting device 4, a radial loading device 5 and an axial loading device 6.
The motorized spindle 2-1 of the driving device is fixed on a bottom plate of the stand through a screw 2-2, an output shaft of the motorized spindle is meshed with a driven gear 3-3 of a test shaft 3 through a driving gear 2-4, a tapered roller bearing pair 3-4 is arranged on one side of the test shaft and is arranged in a bearing seat 1-2 of a supporting platform 1-1 on the stand, and a measured bearing 3-2 is arranged on the other side of the test shaft.
One end of the radial auxiliary loading screw 5-4 is in contact with the outer ring of the bearing 3-2 to be tested, the other end of the radial auxiliary loading screw is connected with the radial pressure sensor 5-3 through threads, the upper end of the pressure sensor is connected with the radial loading screw 5-1, and the loading screw 5-1 is connected with the frame 1 through threads 1-3.
The axial loading device 6 is characterized in that a loading screw 6-1 fixed on a loading claw disc 6-2 contacts with the outer ring side surface of a measured bearing 3-2, the loading claw disc 6-2 is connected with a connecting beam 6-4 through a screw 6-3, the connecting beam is connected with an axial pressure sensor 6-5 through threads, the other side of the axial pressure sensor 6-5 is connected with a guide groove 6-6 through threads, a guide head 6-7-1 of an axial loading screw is embedded in the guide groove 6-6-2, and the axial loading screw is connected with a frame 1 through the threads 6-7-2.
The shooting device 4 observes the motion state of the measured bearing retainer through a frame window.
The specific experimental flow of the experimental device for the movement track of the center of mass of the retainer under the combined load effect by adopting the scheme is as follows:
1. the bearing 3-2 to be tested is mounted in the corresponding position of the test shaft 3-1, and then the entire test shaft is mounted to the frame platform such that the pair of support bearings 3-4 are in the bearing housing 1-2 and the driven gear 3-3 is secured in engagement with the driving gear 2-5.
2. After the connecting cross beam 6-4, the axial pressure sensor 6-5 and the guide groove device 6-6 of the axial loading device 6 are pre-connected, the devices are installed on the supporting platform 1-1, and the axial loading screw rod 6-7 is screwed, so that the guide head 6-7-1 of the axial loading device is guaranteed to be positioned in the guide groove 6-6-2, then the connecting screw 6-3 is used for connecting the loading claw disc 6-2 with the connecting cross beam 6-4, finally the loading screw 6-1 is screwed to the corresponding position, and the loading connecting rod 6-7 is adjusted so that the loading screw 6-1 is contacted with the test bearing 3-2.
3. The radial loading screw 5-1-2 and the auxiliary loading screw 5-4 of the radial loading device 5 are adjusted to enable the lower end face of the auxiliary loading screw to be in contact with the test bearing 3-2.
4. The axial and radial combined loading is completed by rotating the axial loading hand wheel 6-7-3 and the radial loading hand wheel 5-1-1.
5. And starting the motorized spindle 2-1 and the shooting device 4 to finish the test of the centroid track of the rolling bearing retainer, and extracting data to obtain a retainer centroid motion track diagram shown in fig. 8.
Claims (1)
1. The utility model provides a cantilever type test device of measuring cage barycenter motion trail under combined load effect mainly features includes: the device comprises a frame (1), a driving device (2), a test shaft device (3), a shooting device (4), a radial loading device (5) and an axial loading device (6), and realizes the observation of the centroid track of the retainer under the combined load of the axial direction and the radial direction of the rolling bearing; an electric main shaft (2-1) of the driving device (2) is fixed on a bottom plate of the frame through a screw (2-2), and an output shaft of the electric main shaft is meshed with a driven gear (3-3) arranged on the test shaft (3-1) through a driving gear (2-4); one side of the test shaft (3-1) is provided with a tapered roller bearing pair (3-4) which is arranged in a bearing seat hole (1-2) of the support platform (1-1) on the frame, and the other side is provided with a tested bearing (3-2); the shooting device (4) observes the motion state of the retainer of the bearing (3-2) to be tested through a window (1-4) on the frame (1); one end of a radial auxiliary loading screw rod (5-4) of the radial loading device (5) is in contact with the outer ring of the bearing (3-2) to be tested, the other end of the radial auxiliary loading screw rod is connected with a radial tension pressure sensor (5-3) through threads, the upper end of the tension pressure sensor (5-3) is in smooth connection with the radial loading screw rod (5-1-2), and the loading screw rod (5-1-2) is connected with the frame (1) through the threads (1-4); the axial loading device (6) is characterized in that a loading screw (6-1) fixed on a loading claw disc (6-2) is in contact with the outer ring side surface of a measured bearing (3-2), the loading claw disc (6-2) is connected with a connecting beam (6-4) through the screw (6-3), the other end of the connecting beam is connected with an axial pressure sensor (6-5) through a stud, the axial pressure sensor (6-5) is connected with a guide groove mechanism (6-6) through threads, a guide head (6-7-1) of an axial loading screw is embedded in the guide groove (6-6-2), and the axial loading screw is connected with a rack through the threads (6-7-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111146473.9A CN113820131B (en) | 2021-09-28 | 2021-09-28 | Test device for measuring movement track of center of mass of retainer under combined load action by cantilever |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111146473.9A CN113820131B (en) | 2021-09-28 | 2021-09-28 | Test device for measuring movement track of center of mass of retainer under combined load action by cantilever |
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| Publication Number | Publication Date |
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| CN113820131A CN113820131A (en) | 2021-12-21 |
| CN113820131B true CN113820131B (en) | 2023-06-16 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251507Y (en) * | 2008-09-01 | 2009-06-03 | 洛阳工铭机电设备有限公司 | Cantilever supporting mechanism and axial and radial loading mechanism of automobile wheel boss bearing testing machine |
| JP2016023976A (en) * | 2014-07-17 | 2016-02-08 | 株式会社ジェイテクト | Bearing testing machine, and bearing testing method |
| CN110702407A (en) * | 2019-09-25 | 2020-01-17 | 人本集团有限公司 | Combined load test tool for bearing and bearing |
| CN113063546A (en) * | 2021-03-26 | 2021-07-02 | 河南科技大学 | Method, device and system for measuring movement locus of mass center of bearing retainer |
-
2021
- 2021-09-28 CN CN202111146473.9A patent/CN113820131B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251507Y (en) * | 2008-09-01 | 2009-06-03 | 洛阳工铭机电设备有限公司 | Cantilever supporting mechanism and axial and radial loading mechanism of automobile wheel boss bearing testing machine |
| JP2016023976A (en) * | 2014-07-17 | 2016-02-08 | 株式会社ジェイテクト | Bearing testing machine, and bearing testing method |
| CN110702407A (en) * | 2019-09-25 | 2020-01-17 | 人本集团有限公司 | Combined load test tool for bearing and bearing |
| CN113063546A (en) * | 2021-03-26 | 2021-07-02 | 河南科技大学 | Method, device and system for measuring movement locus of mass center of bearing retainer |
Non-Patent Citations (1)
| Title |
|---|
| 微型轴承保持架质心轨迹检测与特性分析;黄迪山;;中国机械工程(15);全文 * |
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