CN201066315Y - A friction torque testing device for top electromotive axis connection bearing - Google Patents
A friction torque testing device for top electromotive axis connection bearing Download PDFInfo
- Publication number
- CN201066315Y CN201066315Y CNU2007200916511U CN200720091651U CN201066315Y CN 201066315 Y CN201066315 Y CN 201066315Y CN U2007200916511 U CNU2007200916511 U CN U2007200916511U CN 200720091651 U CN200720091651 U CN 200720091651U CN 201066315 Y CN201066315 Y CN 201066315Y
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- China
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- bearing unit
- shaft connecting
- loaded ring
- shaft bearing
- connecting bearing
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- Expired - Lifetime
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Abstract
The utility model relates to a testing device testing the friction torque of the integral shaft bearing of a gyro motor. A cylindrical spiral compression spring (1.3) with a rectangular section pre-tightens the integral shaft bearing (1.4) and a separable angular contact ball bearing (1.2), an assembling nut (1.1) is used to tightly press the end surface of the inner circle of the bearing, so that a whole integral shaft bearing unit (1) is formed, and then the integral shaft bearing unit is mounted between a carrying shaft (3) and a loaded ring (2). The loaded ring is designed into the shape of a lug boss, the conical part of the loaded ring matches a grating rotor (4), the conicity is 1:10, the loaded ring glidingly matches the outer diameter of the integral shaft bearing unit, the inner hole is designed as a stepped hole, and the end surface of the step presses the end surface of the outer circle of the integral shaft bearing unit and exerts axial load on the integral shaft bearing unit. A cylinder on the carrying shaft matches the inner hole of the integral shaft bearing unit, and the matching diameter and length are determined by the size of the inner hole of the integral shaft bearing unit. The carrying shaft is fixed on the central shaft (5) of a test head and exerts axial load on the integral shaft bearing unit via the loaded ring.
Description
Technical field
The utility model belongs to bearing detection technique field, specially refers to a kind of gyro machine shaft connecting bearing friction torque test device.
Background technology
Be applied to the measurement of micro-bearing friction torgues such as space flight, aviation, nautical devices, generally use the YZC-II profile shaft to hold the moment of friction measuring instrument.This apparatus measures scope is bearing bore diameter 0.5～20mm, external diameter 5～33mm, height 2～10mm, axial load 0.75N, 1N, 2N, 5N, 10N.Measuring method and principle are that measured bearing is installed on the bolster of instrument test head, the bolster overall height is 13mm, bearing is loaded by loaded ring, the loaded ring overall height is 12mm, loaded ring is connected with the grating rotor simultaneously, produce the rotation of rotating magnetic field driving bearing outer ring by the solenoid that is contained on the measuring head central shaft, and pass through the rotating speed and the moment of photoelectric sensor sensing bearing, sensor sensing electromagnetic torque and bearing frictional torque balance each other.Because measured bearing is plain edition deep groove ball bearing and angular contact ball bearing with lock mouthful normally, the length-diameter ratio of bearing is less than 1, highly be not more than 10mm.And the axle of gyro machine Coupling bearing is special-shaped slender axles, has raceway on the axle, and shaft length is not less than 26mm, and the Coupling bearing length-diameter ratio is not less than 2.Also there are not instrument or measurement mechanism can realize measuring at present to the moment of friction of special construction bearings such as shaft connecting bearing is domestic.
Summary of the invention
In order to overcome the shortcoming that bearing frictional torque measuring instrument measurement mechanism can not be used for divergence type angular contact ball bearing and the measurement of shaft connecting bearing moment of friction, the utility model provides a kind of gyro machine shaft connecting bearing friction torque test device, with shaft connecting bearing as an integrated testability unit, the design test device utilizes the YZC-II profile shaft to hold the measurement that moment of friction instrument measuring principle realizes shaft connecting bearing unit moment of friction.
In order to realize the foregoing invention purpose, the utility model has adopted following technical scheme:
Described gyro machine shaft connecting bearing friction torque test device, earlier the square-section cylindroid helical-coil compression spring is applied pretension to Coupling bearing and divergence type angular contact ball bearing, use mounting nut to compress the bearing inner race end face, two cover bearings are constituted a monoblock type gyro machine shaft connecting bearing unit, then gyro machine shaft connecting bearing unit is installed between bolster and the loaded ring; The loaded ring configuration design becomes the boss shape, and its conical section cooperates with the grating rotor, and tapering is 1: 10; The external diameter cunning of the endoporus of loaded ring and shaft connecting bearing unit is joined, by selecting the quality of boss upper cylinder outside diameter control loaded ring; The bore design of loaded ring becomes stepped hole, and step end face is pressed on the shaft connecting bearing unit cycle surface, and the shaft connecting bearing unit is applied axial load; Bolster top right cylinder cooperates with shaft connecting bearing unit endoporus, and the diameter of matching part and length are by the interior hole dimension decision of shaft connecting bearing unit; Bolster is fixed on the measuring head central shaft, by loaded ring to the shaft connecting bearing unit shaft to loading, after the grating rotor is sleeved on the loaded ring, by the rotating speed and the moment of photoelectric sensor inductive axis connecting shaft bearing unit.
Owing to adopted technical scheme as mentioned above, the utlity model has following good effect:
1, a divergence type angular contact ball bearing and a Coupling bearing friction torque test difficult problem have been solved.Behind Coupling bearing and integral shaft connecting shaft bearing unit of plain bearing formation, the friction torque test result is more accurate in the shaft connecting bearing unit.
2, the utility model not only is used for the shaft connecting bearing that the gyro machine shaft connecting bearing also can promote the use of other field.
3, gyro machine shaft connecting bearing friction torque test device is an innovation in bearing detection technique field.
Description of drawings
Fig. 1 is a gyro machine list ditch shaft connecting bearing cellular construction synoptic diagram;
Fig. 2 is a gyro machine shaft connecting bearing friction torque test apparatus structure synoptic diagram;
Among the above-mentioned figure: 1-shaft connecting bearing unit; 1.1-mounting nut; 1.2-divergence type angular contact ball bearing; 1.3-square-section cylindroid helical-coil compression spring; 1.4-Coupling bearing; The 2-loaded ring; The 3-bolster; 4-grating rotor; 5-measuring head central shaft.
Embodiment
Gyro machine shaft connecting bearing structure has single ditch shaft connecting bearing and two kinds of two ditch shaft connecting bearings, and the every single cover bearing of shaft connecting bearing is the divergence type angular contact ball bearing.Two ditch shaft connecting bearings unit is a monolithic construction, can the sequence of sanqu songs within a particular musical mode after the assembling, and only need a design test device can carry out the measurement of the moment of friction of shaft connecting bearing unit.Single ditch shaft connecting bearing unit is one to interlock the shaft angle contact ball bearing and the common angular contact ball bearing of a cover is formed, single ditch shaft connecting bearing cellular construction is a divergence type, must apply pretension to two cover bearings by the square-section cylindroid helical-coil compression spring, use mounting nut to compress the bearing inner race end face, two cover bearings are constituted an integrated shaft connecting shaft bearing unit, and the design test device just can carry out the test of single ditch shaft connecting bearing unit moment of friction.The proving installation design content is according to shaft connecting bearing unit physical dimension design bolster and loaded ring.
As described in Fig. 1,2, gyro machine shaft connecting bearing friction torque test device of the present utility model, earlier square-section cylindroid helical-coil compression spring (1.3) is applied pretension to Coupling bearing (1.4) and divergence type angular contact ball bearing (1.2), use mounting nut (1.1) to compress the bearing inner race end face, two cover bearings are constituted a monoblock type gyro machine shaft connecting bearing unit (1), gyro machine shaft connecting bearing unit (1) is installed between bolster (3) and the loaded ring (2) then; Loaded ring (2) configuration design becomes the boss shape, and its conical section cooperates with grating rotor (4), and tapering is 1: 10; The external diameter cunning of the endoporus of loaded ring (2) and shaft connecting bearing unit (1) is joined, by selecting the quality of boss upper cylinder outside diameter control loaded ring (2); The bore design of loaded ring (2) becomes stepped hole, and step end face is pressed on shaft connecting bearing unit (1) cycle surface, and shaft connecting bearing unit (1) is applied axial load; Bolster (3) top right cylinder cooperates with shaft connecting bearing unit (1) endoporus, and the diameter of matching part and length are by the interior hole dimension decision of shaft connecting bearing unit (1); Bolster (3) is fixed on the measuring head central shaft (5), by loaded ring (2) shaft connecting bearing unit (1) is axially loaded, after grating rotor (4) is sleeved on the loaded ring (2), by the rotating speed and the moment of photoelectric sensor inductive axis connecting shaft bearing unit (1).
With specification φ 13mm * 26mm gyro machine shaft connecting bearing unit is example, friction torque test device main design parameters is: loaded ring overall height 22.8mm, boss external diameter φ 16mm cooperates endoporus φ 13mm * 20.8mm, and the loaded ring material is that LY12, quality are 0.75N; The external diameter φ 4.2mm at bolster and shaft connecting bearing unit matching position, the bolster overall height is 19.5mm.When the shaft connecting bearing unit is 10rpm at low speed, its dynamic friction torque test result mean value 0.8gcm, every sleeve connecting shaft bearing unit torque fluctuations scope is not more than 0.1gcm, and the friction torque test value is less than the technical requirement of main frame.Match according to shaft connecting bearing friction torque test value prediction bearing power attenuation and gyro machine actual power loss, the gyro machine spin stabilization has proved that shaft connecting bearing unit friction torque test device is reasonable in design, correct.
Claims (1)
1. gyro machine shaft connecting bearing friction torque test device, it is characterized in that: earlier square-section cylindroid helical-coil compression spring (1.3) is applied pretension to Coupling bearing (1.4) and divergence type angular contact ball bearing (1.2), use mounting nut (1.1) to compress the bearing inner race end face, two cover bearings are constituted a monoblock type gyro machine shaft connecting bearing unit (1), gyro machine shaft connecting bearing unit (1) is installed between bolster (3) and the loaded ring (2) then; Loaded ring (2) configuration design becomes the boss shape, and its conical section cooperates with grating rotor (4), and tapering is 1: 10; The external diameter cunning of the endoporus of loaded ring (2) and shaft connecting bearing unit (1) is joined, by selecting the quality of boss upper cylinder outside diameter control loaded ring (2); The bore design of loaded ring (2) becomes stepped hole, and step end face is pressed on shaft connecting bearing unit (1) cycle surface, and shaft connecting bearing unit (1) is applied axial load; Bolster (3) top right cylinder cooperates with shaft connecting bearing unit (1) endoporus, and the diameter of matching part and length are by the interior hole dimension decision of shaft connecting bearing unit (1); Bolster (3) is fixed on the measuring head central shaft (5), by loaded ring (2) shaft connecting bearing unit (1) is axially loaded, after grating rotor (4) is sleeved on the loaded ring (2), by the rotating speed and the moment of photoelectric sensor inductive axis connecting shaft bearing unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200916511U CN201066315Y (en) | 2007-08-23 | 2007-08-23 | A friction torque testing device for top electromotive axis connection bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200916511U CN201066315Y (en) | 2007-08-23 | 2007-08-23 | A friction torque testing device for top electromotive axis connection bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201066315Y true CN201066315Y (en) | 2008-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200916511U Expired - Lifetime CN201066315Y (en) | 2007-08-23 | 2007-08-23 | A friction torque testing device for top electromotive axis connection bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201066315Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277364A (en) * | 2015-11-02 | 2016-01-27 | 常熟长城轴承有限公司 | Bearing friction torque measuring instrument |
| CN109781320A (en) * | 2018-12-25 | 2019-05-21 | 北京青云航空仪表有限公司 | A kind of no inner-ring bearing friction torque testing instrument and test method |
| CN109883698A (en) * | 2017-12-05 | 2019-06-14 | 洛阳轴承研究所有限公司 | Control-moment gyro shafting pre-tightens force measuring method, method of adjustment and measuring device |
| CN110702407A (en) * | 2019-09-25 | 2020-01-17 | 人本集团有限公司 | Combined load test tool for bearing and bearing |
| CN113049154A (en) * | 2021-03-10 | 2021-06-29 | 上海交通大学 | Space momentum wheel bearing friction torque testing machine and testing method thereof |
| CN113447176A (en) * | 2021-06-17 | 2021-09-28 | 人本股份有限公司 | Double-half outer ring bearing friction torque detection device |
-
2007
- 2007-08-23 CN CNU2007200916511U patent/CN201066315Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277364A (en) * | 2015-11-02 | 2016-01-27 | 常熟长城轴承有限公司 | Bearing friction torque measuring instrument |
| CN109883698A (en) * | 2017-12-05 | 2019-06-14 | 洛阳轴承研究所有限公司 | Control-moment gyro shafting pre-tightens force measuring method, method of adjustment and measuring device |
| CN109781320A (en) * | 2018-12-25 | 2019-05-21 | 北京青云航空仪表有限公司 | A kind of no inner-ring bearing friction torque testing instrument and test method |
| CN109781320B (en) * | 2018-12-25 | 2021-01-05 | 北京青云航空仪表有限公司 | Friction moment tester and testing method for bearing without inner ring |
| CN110702407A (en) * | 2019-09-25 | 2020-01-17 | 人本集团有限公司 | Combined load test tool for bearing and bearing |
| CN110702407B (en) * | 2019-09-25 | 2021-08-10 | 人本股份有限公司 | Combined load test tool for bearing and bearing |
| CN113049154A (en) * | 2021-03-10 | 2021-06-29 | 上海交通大学 | Space momentum wheel bearing friction torque testing machine and testing method thereof |
| CN113447176A (en) * | 2021-06-17 | 2021-09-28 | 人本股份有限公司 | Double-half outer ring bearing friction torque detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Luoyang Bearing Research Institute Assignor: Zhouyan Science and Technology Co., Ltd., Luoyang Contract fulfillment period: 2009.9.22 to 2014.9.22 Contract record no.: 2009410000219 Denomination of utility model: A friction torque testing device for top electromotive axis connection bearing Granted publication date: 20080528 License type: Exclusive license Record date: 20090928 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.9.22 TO 2014.9.22; CHANGE OF CONTRACT Name of requester: LUOYANG BEARING INSTITUTE CO., LTD. Effective date: 20090928 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080528 |
|
| CX01 | Expiry of patent term |