CN2765373Y - Combined bearing magnetic suspension motor / electric main shaft - Google Patents
Combined bearing magnetic suspension motor / electric main shaft Download PDFInfo
- Publication number
- CN2765373Y CN2765373Y CN 200520068251 CN200520068251U CN2765373Y CN 2765373 Y CN2765373 Y CN 2765373Y CN 200520068251 CN200520068251 CN 200520068251 CN 200520068251 U CN200520068251 U CN 200520068251U CN 2765373 Y CN2765373 Y CN 2765373Y
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- CN
- China
- Prior art keywords
- magnetic suspension
- bearing
- main shaft
- electric main
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an improved structure of a magnetic suspension motor or a magnetic suspension electric main shaft, which belongs to the technical field of magnetic suspension power devices. The motor or the electric main shaft comprises a stator and a rotor, wherein the rotor is supported on an end cover through magnetic suspension bearings on both ends of the rotor. The utility model has the improvements that the rotor is also provided with a rolling bearing; the matching gap between an outer ring of the rolling bearing and the end cover is smaller than a magnetic suspension gap. When the utility model works, the stator runs in a magnetic suspension state under the condition of normal load. The utility model has the advantages that the magnetic suspension bearings are without friction almost and run smoothly without noise; load reacts on the rolling bearing for preventing the magnetic suspension bearings from damage caused by stress when the load is bigger or meets disturbing force. The utility model uses a simple and reasonable structure for obviously increasing the bearing capacity and the adaptability of the magnetic suspension bearings under the condition of limited cost rise.
Description
Technical field
The utility model relates to a kind of motor/electric main shaft, and the architecture advances of especially a kind of magnetic levitaion motor/electric main shaft belongs to the magnetic suspension field of power equipment technology.
Background technology
Magnetic levitaion motor/electric main shaft has significant advantage than common main shaft aspect the high-speed, high precision machining, therefore has a extensive future.Retrieval is found, the Chinese patent application that the applying date is 02109707.0, name is called " mixed rotor type bearing-free motor " discloses a kind of mixed rotor type bearing-free motor of being made up of housing, stator, winding, rotor, load etc., this motor connects by mechanical axis, and torque and magnetic suspension force index simultaneously can get both.In addition, the patent application that application number is 03232489.8, name is called " magnetic suspension motor) " discloses a kind of magnetic suspension motor, comprise motor housing, central shaft, coil, permanent magnet, oscillator, also comprise a coasting body that passes central shaft, its beneficial effect is that the design of coasting body has then increased the high frequency state stability of motion down.
Yet the applicant finds, existing magnetic levitaion motor/electric main shaft bearing load limited in one's ability especially is difficult to bear perturbed force, and is therefore big or have the occasion of sudden change to use in load, is easy to damage.
Summary of the invention
The technical problems to be solved in the utility model is: the shortcoming at above prior art exists by architecture advances, proposes a kind of combination bearing magnetic levitaion motor/electric main shaft that can bear big load.
In order to solve above technical problem, combination bearing magnetic levitaion motor of the present utility model/electric main shaft comprises stator and rotor, described rotor is supported on the end cap by the magnetic suspension bearing at two ends, its improvements are, described rotor also is equipped with rolling bearing, and the fit clearance of described rolling bearing outer shroud and end cap is less than the magnetic suspension gap.
During work, under the normal load situation, stator is in the magnetic suspension state running, have magnetic suspension bearing almost zerofriction force, steady, the noiseless advantage of running, when loading big or running into perturbed force, load acts on the rolling bearing, thereby avoids the magnetic suspension shaft holding capacity to damage.
This shows that the utility model increases under the condition of limited at cost with the structure of advantages of simple, has significantly improved the bearing capacity and the adaptive capacity of magnetic suspension bearing.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.
Embodiment
Embodiment one
The combination bearing magnetic levitaion motor of present embodiment (or electric main shaft) as shown in Figure 1, the two ends of stator 8 fixedly mount front end housing 6 and rear end cap 11 respectively.It in the stator 8 iron core 9 that is wound with coil 10.Rotor 1 is supported on front end housing 6 and the rear end cap 11 by the magnetic suspension bearing at two ends.Outer shroud 5 and interior ring 4 that magnetic suspension bearing is made by ndfeb magnetic material are formed, two rings form the magnetic suspension gap with opposite polarity relative inner conical surface and male cone (strobilus masculinus) respectively, so both can bear certain radial load, also can bear axial force, form the action effect of radial thrust bearing, make compact conformation.Rolling bearing 2 also is equipped with in two outer ends that rotor 1 closes on magnetic suspension bearing.The outer shroud of this rolling bearing and the fit clearance of end cap are rotated for fear of outer shroud less than the magnetic suspension gap, have been embedded with the sealing ring 3 of damping action in the endoporus of two end cap installation rolling bearing outer shroud.
In normal operation, stator runs up under the magnetic suspension bearing with radial thrust bearing action effect supports.Big or when running into radially perturbed force when load, force transmission to rolling bearing, thereby avoid the mutual friction damage of NdFeB material.
Experiment shows that the combination bearing magnetic levitaion motor of present embodiment (electric main shaft) can significantly improve the bearing capacity and the adaptive capacity of magnetic suspension bearing, prolongs its useful life greatly.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (4)
1. combination bearing magnetic levitaion motor/electric main shaft, comprise stator and rotor, described rotor is supported on the end cap by the magnetic suspension bearing at two ends, it is characterized in that: described rotor also is equipped with rolling bearing, and the fit clearance of described rolling bearing outer shroud and end cap is less than the magnetic suspension gap.
2. according to the described combination bearing magnetic levitaion motor of claim 1/electric main shaft, it is characterized in that: outer shroud and interior ring that described magnetic suspension bearing is made by ferromagnetic material are formed, and two rings form the magnetic suspension gap with opposite polarity relative inner conical surface and male cone (strobilus masculinus) respectively.
3. according to the described combination bearing magnetic levitaion motor of claim 2/electric main shaft, it is characterized in that: rolling bearing is equipped with in two outer ends that described rotor closes on magnetic suspension bearing.
4. according to claim 2 or 3 described combination bearing magnetic levitaion motor/electric main shafts, it is characterized in that: the sealing ring that has been embedded with damping action in the endoporus of described end cap installation rolling bearing outer shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520068251 CN2765373Y (en) | 2005-01-13 | 2005-01-13 | Combined bearing magnetic suspension motor / electric main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520068251 CN2765373Y (en) | 2005-01-13 | 2005-01-13 | Combined bearing magnetic suspension motor / electric main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2765373Y true CN2765373Y (en) | 2006-03-15 |
Family
ID=36168287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520068251 Expired - Fee Related CN2765373Y (en) | 2005-01-13 | 2005-01-13 | Combined bearing magnetic suspension motor / electric main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2765373Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111909A1 (en) * | 2008-03-13 | 2009-09-17 | Wang Yuyen | A vertical pivotal rotary system with a magnetic suspension device |
| CN103161826A (en) * | 2011-12-13 | 2013-06-19 | 张玉宝 | Power-off protection mechanism of magnetic suspension rotor support system |
| CN103956847A (en) * | 2014-05-15 | 2014-07-30 | 江苏华雕机械有限公司 | High-speed motorized spindle using permanent magnets instead of bearings |
| CN104979943A (en) * | 2015-07-09 | 2015-10-14 | 苏州润吉驱动技术有限公司 | High-speed external rotor traction machine with magnetic suspension structure |
| CN106246742A (en) * | 2016-09-26 | 2016-12-21 | 南京磁谷科技有限公司 | A kind of water-cooling structure of magnetic suspension motor auxiliary bearing |
| CN106402175A (en) * | 2016-11-21 | 2017-02-15 | 南京磁谷科技有限公司 | Bearing cooling structure |
| CN107528402A (en) * | 2016-06-22 | 2017-12-29 | 林圣梁 | Motor |
| CN111503149A (en) * | 2020-04-01 | 2020-08-07 | 江苏理工学院 | Integrated electromagnetic protection bearing device |
-
2005
- 2005-01-13 CN CN 200520068251 patent/CN2765373Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111909A1 (en) * | 2008-03-13 | 2009-09-17 | Wang Yuyen | A vertical pivotal rotary system with a magnetic suspension device |
| CN103161826A (en) * | 2011-12-13 | 2013-06-19 | 张玉宝 | Power-off protection mechanism of magnetic suspension rotor support system |
| CN103956847A (en) * | 2014-05-15 | 2014-07-30 | 江苏华雕机械有限公司 | High-speed motorized spindle using permanent magnets instead of bearings |
| CN104979943A (en) * | 2015-07-09 | 2015-10-14 | 苏州润吉驱动技术有限公司 | High-speed external rotor traction machine with magnetic suspension structure |
| CN107528402A (en) * | 2016-06-22 | 2017-12-29 | 林圣梁 | Motor |
| CN106246742A (en) * | 2016-09-26 | 2016-12-21 | 南京磁谷科技有限公司 | A kind of water-cooling structure of magnetic suspension motor auxiliary bearing |
| CN106402175A (en) * | 2016-11-21 | 2017-02-15 | 南京磁谷科技有限公司 | Bearing cooling structure |
| CN106402175B (en) * | 2016-11-21 | 2019-09-03 | 南京磁谷科技有限公司 | A kind of bearing cooling structure |
| CN111503149A (en) * | 2020-04-01 | 2020-08-07 | 江苏理工学院 | Integrated electromagnetic protection bearing device |
| CN111503149B (en) * | 2020-04-01 | 2021-10-19 | 江苏理工学院 | Integrated electromagnetic protection bearing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |