CN101413551A - Bearing design and structure of double-interior diameter support high speed gyro motor - Google Patents
Bearing design and structure of double-interior diameter support high speed gyro motor Download PDFInfo
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- CN101413551A CN101413551A CNA2008102306251A CN200810230625A CN101413551A CN 101413551 A CN101413551 A CN 101413551A CN A2008102306251 A CNA2008102306251 A CN A2008102306251A CN 200810230625 A CN200810230625 A CN 200810230625A CN 101413551 A CN101413551 A CN 101413551A
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- 238000005096 rolling process Methods 0.000 claims abstract description 30
- 230000003068 static effect Effects 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The invention discloses a bearing structure of a dual-inner diameter supported high-speed gyro motor. In the bearing structure, the section of an outer ring 6 takes a symmetrical Z shape, a plurality of rolling elements 9 are arranged in a unilateral skewed slot of the outer ring, the unilateral skewed slot is separated by a retainer 8, matched with the diameters of the rolling elements and supported by a bearing inner ring 7 with a concave circular race, both the width of the inner ring and the total width of the retainer are shorter than the inner width of the unilateral skewed slot of the outer ring and a straight line segment, a small inner diameter of the outer ring adjacent to the inner width is shorter than a big inner diameter of the inner ring, and the big inner diameter and the width of the inner ring are closely matched with an L-shaped end cover 10 which is matched with a step surface of an outer rotor 3 of the gyro motor. The big inner diameter of the inner ring is increased to rotate together with the matched L-shaped end cover with the movement of the outer rotor, the small inner diameter of the outer ring keeps relatively still along with a gyro motor shaft, which causes that the speed ratio of the rolling elements is 1.25/0.75=1.67 when the outer ring rotates, the inner ring keeps still, the relative bearing inner ring rotates and the outer ring keeps still, the rotation speed of the rolling elements is reduced, the times of friction with the race is reduced by 67%, and the wear life of the bearing is prolonged by 50%.
Description
Technical field
The invention belongs to technical field of bearings, especially a kind of design bearing of double-interior diameter support high speed gyro motor and structure.
Background technique
Often use the liquid floated gyroscope motor in aviation, navigation, aerospace navigation system, the motor shaft of this gyro machine is supported by two cover divergence type angular contact ball bearings, and concrete structure is referring to Fig. 1.Gyro machine is made of motor shaft 1, coil 2, external rotor 3, magnet steel 4, angular contact ball bearing 5 is installed in the two ends of gyro machine, bearing 5 outer rings are with 3 rotations of gyro machine external rotor, and bearing 5 internal diameters and motor shaft 1 cooperation during installation, external diameter and external rotor 3 cooperate.Because motor shaft 1 structure is two symmetrical steps, so bearing 5 internal diameters of being installed are also less.
The rotating ratio of gyro machine is higher, and general all more than 10000 rev/mins, the gyro machine of working under 24000 rev/mins of rotating speeds is also a lot.Because gyro machine and the requirement to some extent of main frame weight, bearing 5 does not allow subsidiary other external oil supplying device, so under fast state, all have the problem of bearing 5 lack of lubrication, also be subjected to very big influence its working life, so 5 life-spans of bearing of this structure are generally not high, are difficult to satisfy usage requirement.
Summary of the invention
In order to address the above problem, the present invention has designed a kind of design bearing and structure of double-interior diameter support high speed gyro motor, this design bearing adopts the gyro machine external rotor to cooperate two internal diameter fit systems of the uniqueness that L type end cap matches with the bearing inner race large diameter, the gyro machine axle cooperates with the little internal diameter of bearing outer ring, cleverly the bearing outer ring rotation mode has been become the bearing inner race rotation mode, thereby caused the change of this bearing structure, it is nearly 60% to reduce the bearing roller rotating speed, improves working life more than 50%.
For achieving the above object, the present invention adopts following technological scheme:
The design bearing of described double-interior diameter support high speed gyro motor, actual conditions according to gyro machine, the little internal diameter of bearing outer ring is designed to the size that matches with static gyro machine shaft diameter, that is to say that the design of the little internal diameter of bearing outer ring can be considered to the load relative static conditions; The size that the transition L type end cap of being joined on the large diameter with bearing inner race matches with the gyro machine external rotor of rotation, that is to say that the large diameter of bearing inner race and the design of L type end cap can be considered to load relative movement state, have so just formed the design bearing of double-interior diameter support high speed gyro motor; Because the large diameter diameter of bearing inner race increases, cooperate with the external rotor step surface of gyro machine by associated L type end cap, become static motion into along with external rotor rotatablely moves together, and the little internal diameter of bearing outer ring keeps relative static conditions with the cooperation of gyro machine axle, make like this bearing outer ring rotation inner ring static phase to bearing inner race rotation outer ring when static the ratio of the rotating speed of its bearing roller be 1.25/0.75=1.67, be that rolling element actual speed inner ring speed ratio outer ring rotates little by 67%, that is to say that the friction number of times between reduction of rolling element rotating speed and the raceway also reduces about 67%, in like manner between rolling element and the raceway the also corresponding minimizing of wearing and tearing, prolong the bearing wear life-span more than 50%.
The bearing structure of described double-interior diameter support high speed gyro motor, its bearing outer ring section is symmetrical Z font, in the monolateral skewed slot of outer ring, be equipped with several rolling elements, several rolling elements are kept apart by retainer and are mated the bearing inner race support with recessed round raceway with the rolling element radius, the inner race width of recessed round raceway and the beam overall of retainer are all less than the inner width of monolateral skewed slot in outer ring and straightway, the outer ring little internal diameter adjacent with this inner width is less than the large diameter of inner ring, and going back drive fit on the large diameter of inner ring and the width has and gyro machine external rotor step surface matched L-shaped end cover.
Because adopt aforesaid technological scheme, the present invention has following superiority:
1, bearing of the present invention is applied in the floating gyro machine of high velocity liquid, because the reduction of rolling element actual speed, the working life of the vibration of motor, friction torque and motor, power consumption all have obvious reduction, gyrostatic startup stability one by one is good, the dynamic random drift value is little, the gyroscope performance does not change before and after ambient vibration and the impact shock, and every dynamic performance index all obviously is better than using the gyro machine of standard plain bearing structure.
2, bearing inner race large diameter of the present invention increases than plain bearing internal diameter, can cooperate with the external rotor step surface of gyro machine, becomes static motion into along with external rotor rotates together.
3, cooperate with the external rotor step surface of gyro machine by friction tight L type end cap on the bearing inner race large diameter, become the outer ring of moving with motor outer rotor originally and be inner ring.
4, the little internal diameter of bearing outer ring cooperates with the gyro machine axle and keeps relative static conditions, has changed the design bearing structure.
5, the two internal diameters of bearing of the present invention cooperate support gyro machine form, and the actual speed that can reduce bearing roller is more than 60%.
6, by the reduction of rolling element rotating speed, effectively reduced the friction number of times of bearing roller and raceway, reduced the wearing and tearing of rolling element and raceway, can also effectively improve the oil-poor phenomenon of high speed of rolling element and raceway simultaneously, prolong the bearing wear life-span more than 50%.
Description of drawings
Fig. 1 is the scheme of installation of plain bearing in gyro machine;
Fig. 2 is a bearing structure schematic representation of the present invention;
Fig. 3 is the structural representation of Bearing Installation of the present invention in gyro machine;
Among the above-mentioned figure: 1-motor shaft; 2-coil; 3-external rotor; 4-magnet steel, 5-angular contact ball bearing; 6-outer ring; 7-inner ring; 8-retainer; 9-rolling element; 10-L type end cap.
Embodiment
Generally, the rotational speed formula of bearing roller is:
V wherein
mBe rolling element revolution rotating speed, d
mBe the footpath, center of bearing, n
iBe the inner ring rotating speed of bearing, n
oBe the outer ring rotating speed of bearing, γ is that a constant with the design bearing relating to parameters is generally about 0.25.
Obviously when design parameter identical, when bearing outer ring rotation inner ring is static with bearing inner race rotation outer ring when static the ratio of the rotating speed of bearing roller be 1.25/0.75=1.67, promptly bearing roller actual speed outer ring speed ratio inner ring rotates big by 67%.Because the raising of rolling element rotating speed, and the friction number of times between the raceway just increases about 67%, and just increase is much in rolling element and the wearing and tearing that contacts raceway in like manner.
Based on above-mentioned principle, the design bearing of double-interior diameter support high speed gyro motor of the present invention, actual conditions according to gyro machine, the little internal diameter of bearing outer ring is designed to the size that matches with static gyro machine shaft diameter, that is to say that the design of the little internal diameter of bearing outer ring can be considered to the load relative static conditions; The size that the transition L type end cap of being joined on the large diameter with bearing inner race matches with the gyro machine external rotor of rotation, that is to say that the large diameter of bearing inner race and the design of L type end cap can be considered to load relative movement state, have so just formed the design bearing of double-interior diameter support high speed gyro motor; Because the large diameter diameter of bearing inner race increases, cooperate with the external rotor step surface of gyro machine by associated L type end cap, become static motion into along with external rotor rotatablely moves together, and the little internal diameter of bearing outer ring keeps relative static conditions with the cooperation of gyro machine axle, make like this bearing outer ring rotation inner ring static phase to bearing inner race rotation outer ring when static the ratio of the rotating speed of its bearing roller be 1.25/0.75=1.67, be that rolling element actual speed inner ring speed ratio outer ring rotates little by 67%, that is to say that the friction number of times between reduction of rolling element rotating speed and the raceway also reduces about 67%, in like manner between rolling element and the raceway the also corresponding minimizing of wearing and tearing, prolong the bearing wear life-span more than 50%.
In conjunction with Fig. 2, the bearing structure of double-interior diameter support high speed gyro motor of the present invention, its bearing outer ring 6 sections are symmetrical Z font, in the monolateral skewed slot of outer ring 6, be equipped with several rolling elements 9, several rolling elements 9 are kept apart by retainer 8 and are mated bearing inner race 7 supports with recessed round raceway with rolling element 9 radiuses, inner ring 7 width of recessed round raceway and the beam overall of retainer 8 are all less than the inner width of outer ring 6 monolateral skewed slots and straightway, the outer ring 6 little internal diameters adjacent with this inner width are less than the large diameter of inner ring 7, and going back drive fit on the large diameter of inner ring 7 and the width has and gyro machine external rotor 3 step surface matched L-shaped end cover 10.
Fig. 3 is the structural representation of Bearing Installation of the present invention in gyro machine, only needs during installation that bearing of the present invention press Fig. 3 mode and connects with gyro machine and get final product, and can make the raising of gyro machine life-span more than 50%.
Claims (2)
1, a kind of design bearing of double-interior diameter support high speed gyro motor, it is characterized in that: according to the actual conditions of gyro machine, the little internal diameter of bearing outer ring is designed to the size that matches with static gyro machine shaft diameter, that is to say that the design of the little internal diameter of bearing outer ring can be considered to the load relative static conditions; The size that the transition L type end cap of being joined on the large diameter with bearing inner race matches with the gyro machine external rotor of rotation, that is to say that the large diameter of bearing inner race and the design of L type end cap can be considered to load relative movement state, have so just formed the design bearing of double-interior diameter support high speed gyro motor; Because the large diameter diameter of bearing inner race increases, cooperate with the external rotor step surface of gyro machine by associated L type end cap, become static motion into along with external rotor rotatablely moves together, and the little internal diameter of bearing outer ring keeps relative static conditions with the cooperation of gyro machine axle, make like this bearing outer ring rotation inner ring static phase to bearing inner race rotation outer ring when static the ratio of the rotating speed of its bearing roller be 1.25/0.75=1.67, be that rolling element actual speed inner ring speed ratio outer ring rotates little by 67%, that is to say that the friction number of times between reduction of rolling element rotating speed and the raceway also reduces about 67%, in like manner between rolling element and the raceway the also corresponding minimizing of wearing and tearing, prolong the bearing wear life-span more than 50%.
2, a kind of bearing structure of double-interior diameter support high speed gyro motor, it is characterized in that: bearing outer ring (6) section is symmetrical Z font, in the monolateral skewed slot of outer ring (6), be equipped with several rolling elements (9), (90 are kept apart and are supported with bearing inner race (7) that rolling element (9) radius coupling has a recessed round raceway by retainer (8) several rolling elements, the beam overall of the inner ring of recessed round raceway (7) width and retainer (8) is all less than the inner width of monolateral skewed slot in outer ring (6) and straightway, outer ring (6) the little internal diameter adjacent with this inner width is less than the large diameter of inner ring (7), and going back drive fit on the large diameter of inner ring (7) and the width has and gyro machine external rotor (3) step surface matched L-shaped end cover (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102306251A CN101413551B (en) | 2008-10-21 | 2008-10-21 | Bearing design and structure of double-interior diameter support high speed gyro motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102306251A CN101413551B (en) | 2008-10-21 | 2008-10-21 | Bearing design and structure of double-interior diameter support high speed gyro motor |
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| Publication Number | Publication Date |
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| CN101413551A true CN101413551A (en) | 2009-04-22 |
| CN101413551B CN101413551B (en) | 2010-10-27 |
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| CN2008102306251A Expired - Fee Related CN101413551B (en) | 2008-10-21 | 2008-10-21 | Bearing design and structure of double-interior diameter support high speed gyro motor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969253A (en) * | 2010-10-08 | 2011-02-09 | 洛阳轴研科技股份有限公司 | Simple assembly method of end cover bearing of micro-gyro motor |
| CN102751835A (en) * | 2011-04-19 | 2012-10-24 | 郑福民 | Brushless DC motor |
| CN103633804A (en) * | 2013-12-10 | 2014-03-12 | 天津市陆航电机技术有限公司 | High-specific-gravity permanent magnet brushless direct-current gyro motor |
| CN104196897A (en) * | 2014-08-01 | 2014-12-10 | 胡勋芳 | End cover structure adaptive to motor installing structures |
| CN106215424A (en) * | 2016-09-25 | 2016-12-14 | 任孝忠 | The safe gyro of remote control outer rotor brushless motor |
| CN109248445A (en) * | 2017-07-14 | 2019-01-22 | 许昌义 | Gyro with axial freewheel clutch |
| CN110979584A (en) * | 2019-12-17 | 2020-04-10 | 上海新跃联汇电子科技有限公司 | Anti-rolling gyro rotor system and driving method thereof |
| CN113941661A (en) * | 2021-10-15 | 2022-01-18 | 上海盘毂动力科技股份有限公司 | Method for forming rotor disc of disc type switch reluctance motor |
| CN114157077A (en) * | 2021-11-28 | 2022-03-08 | 陕西华燕航空仪表有限公司 | Design method for motor shaft system structure of electromechanical gyroscope |
| CN114147454A (en) * | 2021-11-15 | 2022-03-08 | 西安航天精密机电研究所 | Small-sized dynamically tuned gyro bearing system assembling tool and method |
| CN116006568A (en) * | 2022-12-22 | 2023-04-25 | 上海航天控制技术研究所 | Four-point support type high-torque high-speed shafting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201284791Y (en) * | 2008-10-21 | 2009-08-05 | 洛阳轴研科技股份有限公司 | Special bearing used for high-speed gyro-motor |
-
2008
- 2008-10-21 CN CN2008102306251A patent/CN101413551B/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969253A (en) * | 2010-10-08 | 2011-02-09 | 洛阳轴研科技股份有限公司 | Simple assembly method of end cover bearing of micro-gyro motor |
| CN101969253B (en) * | 2010-10-08 | 2012-09-26 | 洛阳轴研科技股份有限公司 | Simple assembly method of end cover bearing of micro-gyro motor |
| CN102751835A (en) * | 2011-04-19 | 2012-10-24 | 郑福民 | Brushless DC motor |
| CN103633804A (en) * | 2013-12-10 | 2014-03-12 | 天津市陆航电机技术有限公司 | High-specific-gravity permanent magnet brushless direct-current gyro motor |
| CN104196897A (en) * | 2014-08-01 | 2014-12-10 | 胡勋芳 | End cover structure adaptive to motor installing structures |
| CN106215424A (en) * | 2016-09-25 | 2016-12-14 | 任孝忠 | The safe gyro of remote control outer rotor brushless motor |
| CN109248445A (en) * | 2017-07-14 | 2019-01-22 | 许昌义 | Gyro with axial freewheel clutch |
| CN110979584A (en) * | 2019-12-17 | 2020-04-10 | 上海新跃联汇电子科技有限公司 | Anti-rolling gyro rotor system and driving method thereof |
| CN113941661A (en) * | 2021-10-15 | 2022-01-18 | 上海盘毂动力科技股份有限公司 | Method for forming rotor disc of disc type switch reluctance motor |
| CN113941661B (en) * | 2021-10-15 | 2024-03-05 | 上海盘毂动力科技股份有限公司 | Method for forming rotor disc of disc type switch reluctance motor |
| CN114147454A (en) * | 2021-11-15 | 2022-03-08 | 西安航天精密机电研究所 | Small-sized dynamically tuned gyro bearing system assembling tool and method |
| CN114147454B (en) * | 2021-11-15 | 2022-11-01 | 西安航天精密机电研究所 | Small-sized dynamically tuned gyro bearing system assembling tool and method |
| CN114157077A (en) * | 2021-11-28 | 2022-03-08 | 陕西华燕航空仪表有限公司 | Design method for motor shaft system structure of electromechanical gyroscope |
| CN114157077B (en) * | 2021-11-28 | 2023-08-04 | 陕西华燕航空仪表有限公司 | Motor shafting structure design method of electromechanical gyroscope |
| CN116006568A (en) * | 2022-12-22 | 2023-04-25 | 上海航天控制技术研究所 | Four-point support type high-torque high-speed shafting |
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| Publication number | Publication date |
|---|---|
| CN101413551B (en) | 2010-10-27 |
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Effective date of registration: 20180509 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: LUOYANG BEARING RESEARCH INSTITUTE Co.,Ltd. Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: LUOYANG BEARING SCIENCE & TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20101027 |