CN2899251Y - Super-high-speed electric spindle with multiple bearing support - Google Patents
Super-high-speed electric spindle with multiple bearing support Download PDFInfo
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- CN2899251Y CN2899251Y CN 200620040640 CN200620040640U CN2899251Y CN 2899251 Y CN2899251 Y CN 2899251Y CN 200620040640 CN200620040640 CN 200620040640 CN 200620040640 U CN200620040640 U CN 200620040640U CN 2899251 Y CN2899251 Y CN 2899251Y
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- rotating shaft
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- main shaft
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Abstract
The utility model discloses a super-high-speed electric spindle with multiple bearing support consisting of a supporting system, an arranged-in motor, a housing and a shaft. The supporting system of the electric spindle consists of a rolling bearing and a magnetic bearing. The super-high-speed electric spindle with a plurality of bearing supports is characterized in that: the angular contact ball bearing with good high-speed performance and high rotation accuracy is used as a radial supporting bearing, the bi-directional thrust magnetic bearing with high carrying capacity and no friction wear is used as a axial supporting bearing, and the electric spindle structure is adopted to realize the functions of super high speed, high precision and axial high carrying capacity. The utility model has the advantages of super high speed, high precision, axial high carrying capacity, reliable running, long life-span of bearing, compact electric spindle structure, high efficiency and strong feasibility.
Description
Technical field
The utility model relates to the high-speed motorized spindles in a kind of electromechanical engineering field, particularly one kind of multiple types of bearings mixing bearing high-speed motorized spindles.
Background technology
High-speed electric main shaft is to adorn in the drive motors, the power part of the electromechanical integration of functions such as, high accuracy high-speed to realize and high efficiency.The general bearing that adopts same type of the supporting system of present electric main shaft, therefore the structure of electric main shaft mainly contains: the electric main shaft of the electric main shaft of the electric main shaft of rolling bearing supporting, fluid bearing supporting, the electric main shaft of magnetic suspension bearing supporting and the supporting of other bearing.The electric main axle structure of these same types of bearings supportings is simple, can realize requirement at a high speed simple or simple heavy duty, but, for both requiring to reach very high rotating speed and having high rotating accuracy, need to bear the application scenario of very big axial load again, then can cause the electric main shaft of same types of bearings supporting following result to occur: (1) or only can satisfy high rotating speed, high-precision requirement, only can satisfy and bear the big axially requirement of load, but can't take into account and reach the requirement of this two aspect simultaneously; (2) if take into account the requirement of two aspects reluctantly, then or sacrifice useful life (very short time inner bearing lost efficacy) of bearing, or reduce the requirement of aspects such as rotating speed, precision, and make the structure of electric main shaft huge, complicated.
Thereby needing a kind of novel high speed electricity of exploitation main shaft, realization can either be born very big axial load, reaches ultrahigh rotating speed, high-precision function, can realize high reliability, long-life operation within the normal running conditions claimed range of bearing again simultaneously.
Summary of the invention
The purpose of this utility model is in order to overcome the limitation that present same types of bearings supports electric main shaft application, the high-speed motorized spindles of one kind of multiple types of bearings mixing bearings is provided, embodies ultraspeed, high accuracy, big axially bearing capacity and long-life, compact conformation, advantage that feasibility is strong.
For achieving the above object, the utility model adopts following technical scheme:
The high-speed motorized spindles of one kind of multiple types of bearings mixing bearings, comprise the rotating shaft of direct fixedly connected rotor, the electric main shaft shell and the shaft support system of inner electric machine stator, it is characterized in that described shaft support system adopts polytype bearing mixing bearing structure: with angular contact ball bearing as the rotating shaft radial support bearing, and with the bi-directional electromagnetic thrust bearing as rotating shaft axially mounting bearing.
Above-mentioned as the installation setting of rotating shaft radial support bearing be: the angular contact ball bearing that two cover DB configurations are set is installed respectively in the front and back ends portion of rotating shaft with angular contact ball bearing.
In above-mentioned electric main shaft, there are oil gas or fog lubrication passage to be arranged in the forward and backward end cap of electric main shaft housing and are switched to the angular contact ball bearing inner chamber, realize this bearing is carried out oil gas or fog lubrication.
Above-mentioned as the installation setting of rotating shaft axially mounting bearing being: at the rotor of the fixedly connected electromagnetic bearing of rotating shaft with the bi-directional electromagnetic thrust bearing---the stator that the bi-directional electromagnetic thrust bearing is set is installed in the both sides of thrust collar.
Be provided with the liquid cools function in above-mentioned electric main shaft, its cooling passage is arranged in the electric main shaft housing, realizes the cooling to electric main shaft inner electric machine, to improve the power output of inner electric machine most possibly.
Design feature of the present utility model is: (1) is little but rotating speed height, requirement that precision is high at radial load, with angular contact ball bearing as radial support, with the restrict rotor system except that vertically and 4 degrees of freedom around axial motion, and employing oil gas or fog lubrication, give full play to the angular contact ball bearing high speed performance is good, rotating accuracy is high characteristics and oil gas (or mist of oil) lubrication technology high lubricating effect, be beneficial to the advantage that improves the bearing rotating speed, with realization ultrahigh speed and high rotating accuracy, and reach long bearing useful life; (2) at the requirement of macro-axis to external applied load, employing carrying energy is big, load is adjustable and have the axially mounting of the bi-directional electromagnetic thrust bearing of noncontact characteristics as electric main shaft, the degree of freedom that the constraint rotor moves is vertically born all axially external applied load, and can realize the long-life operation of electric main shaft.
The utility model has following substantive distinguishing features and technological progress compared with prior art:
(1) the rotating speed height of electric main shaft, rotating accuracy height;
(2) electric main shaft has very big axial carrying capacity under the ultrahigh speed situation;
(3) reliable, the long service life of electric mainshaft bearing;
(4) comprehensively bring into play rolling bearing and magnetic suspension bearing advantage separately, overcome the limitation of single type bearing;
(5) electric main shaft can satisfy the functional requirement of ultrahigh rotating speed, high accuracy, big axially bearing capacity and long-life operation on simple architecture basics.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is Fig. 1 example shaft supporting system schematic diagram.
Embodiment
A preferred embodiment of the present utility model is: referring to Fig. 1, the high-speed motorized spindles of this polytype bearing mixing bearing includes the rotating shaft 1 of direct fixedly connected rotor 8, the electric main shaft housing 6 and the shaft support system of inner electric machine stator 7.The shaft support system adopts polytype bearing mixing bearing structure, with the front and back ends radial support bearing of angular contact ball bearing 5,12 as rotating shaft, and with the axially mounting bearing of bi-directional electromagnetic thrust bearing 10,11 as rotating shaft.
Above-mentioned as the installation setting of rotating shaft radial support bearing be: the angular contact ball bearing 5,12 that two cover DB configurations are set is installed respectively in the front and back ends portion of rotating shaft 1 with angular contact bearing.The inner rings of two cover angular contact ball bearings 5 of front end are contained in the front end of rotating shaft 1, by preceding nut 2 it are compressed the location, and its outer ring is embedded in the endoporus of end cap 3 of electric main shaft shell 6 front ends, and the outer ring can move axially in end cap 3; The inner rings of two cover angular contact ball bearings 12 of rear end are contained in the rear end of rotating shaft 1, by rear nut 15 it are compressed the location, and its outer ring is inlaid in the endoporus of end cap 13 of electric main shaft housing 6 rear ends, and also can move axially.The passage 4,14 of oil gas or mist of oil is arranged in the forward and backward end cap 3 and 13 of electric main shaft housing 6 and is switched to angular contact ball bearing 5,12 inner chambers, realizes bearing is carried out oil gas or fog lubrication.
Above-mentioned as the installation setting of rotating shaft axially mounting bearing be with electromagnetic bearing: the fixedly connected electromagnetic bearing of rotating shaft 1 rotor---the stator 11 that the bi-directional electromagnetic thrust bearing is set is installed in the both sides of thrust collar 10.
In above-mentioned electric main shaft, be provided with the liquid cools function, its cooling passage 9 is arranged in the electric main shaft housing 6, realizes electric main shaft inner electric machine stator 7 is cooled off.
The supporting system principle of its rotating shaft is referring to Fig. 2,4 degrees of freedom that rotating shaft 1 is moved and rotated around x, y direction of principal axis along x, y direction of principal axis are retrained by the front and back ends radial support bearing 5 and 12 of electric main shaft, and the degree of freedom that moves along rotor axis z direction is limited by bi-directional magnetic suspension thrust bearing 10,11.The rolling bearing of front and back ends radial support is the angular contact ball bearing that high speed performance is good, rotating accuracy is high (claiming main shaft bearing again), and adopts mist of oil or oil-air lubrication, to improve the speed parameter d of bearing
mN (footpath d in the bearing
mProduct with rotation speed n) value and useful life; Axial magnetic suspension bearing 10,11 is non-contacting bidirectional propulsion electromagnetic bearing, and bearing capacity is strong, no friction and wear.In the course of the work, the front and back ends journal bearing can move axially in forward and backward end cap endoporus, does not bear external shaft to service load, therefore can be issued to the very long life-span in ultrahigh rotating speed, high accuracy situation; Bidirectional propulsion electromagnetic bearing 10,11 bears whole external shafts to service load F
a, because non-contacting characteristics, electromagnetic bearing under big load effect, no fretting wear generation, efficient height, life-span are long.
Claims (5)
1, the high-speed motorized spindles of one kind of multiple types of bearings mixing bearings, comprise the rotating shaft (1) of direct fixedly connected rotor (8), the electric main shaft housing (6) and the shaft support system of inner electric machine stator (7), it is characterized in that described shaft support system adopts polytype bearing mixing bearing structure, with angular contact ball bearing (5,12) as the rotating shaft radial support bearing, and with the axially mounting bearing of bi-directional electromagnetic thrust bearing (10,11) as rotating shaft.
2, the high-speed motorized spindles of polytype bearing mixing bearing according to claim 1, it is characterized in that describedly with angular contact ball bearing as the installation setting of rotating shaft radial support bearing being: in the front and back ends portion of rotating shaft (1) angular contact ball bearing (5,12) that two cover DB configurations are set is installed respectively, bearing can move axially in forward and backward end cap (3,13) endoporus.
3, the high-speed motorized spindles of polytype bearing mixing bearing according to claim 2, it is characterized in that having oil gas or mist of oil function, its oil gas or fog lubrication passage (4,14) are arranged in the forward and backward end cap (3,13) of electric main shaft housing (6) and are switched to angular contact ball bearing (5,12) inner chamber, realize this bearing is carried out oil gas or fog lubrication.
4, the high-speed motorized spindles of polytype bearing mixing bearing according to claim 1 and 2 is characterized in that describedly with the bi-directional electromagnetic thrust bearing as the installation setting of rotating shaft axially mounting bearing being: at the rotor of the fixedly connected electromagnetic bearing of rotating shaft (1)---the stator (11) that the bi-directional electromagnetic thrust bearing is set is installed in the both sides of thrust collar (10).
5, the high-speed motorized spindles of polytype bearing mixing bearing according to claim 1 is characterized in that having the liquid cools function, and its cooling duct (9) are arranged in the electric main shaft housing (6), realizes the cooling to electric main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040640 CN2899251Y (en) | 2006-03-30 | 2006-03-30 | Super-high-speed electric spindle with multiple bearing support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040640 CN2899251Y (en) | 2006-03-30 | 2006-03-30 | Super-high-speed electric spindle with multiple bearing support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2899251Y true CN2899251Y (en) | 2007-05-09 |
Family
ID=38074582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620040640 Expired - Fee Related CN2899251Y (en) | 2006-03-30 | 2006-03-30 | Super-high-speed electric spindle with multiple bearing support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2899251Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788012A (en) * | 2010-03-17 | 2010-07-28 | 上海大学 | Rotor system of permanent-magnetic high-temperature super-conduction magnetic bearing |
| CN101662180B (en) * | 2008-08-27 | 2011-07-20 | 何君 | Standard magnetic suspension hybrid bearing-supported rotor and high-speed induction electrical rotating machine |
| CN101710754B (en) * | 2009-11-27 | 2012-05-02 | 江苏华雕机械有限公司 | Electric spindle lubricated by water or water mist |
| CN102570692A (en) * | 2010-12-15 | 2012-07-11 | 江苏华雕机械有限公司 | Electric spindle supported by multivariant bearing |
| CN106112022A (en) * | 2016-08-30 | 2016-11-16 | 上海大学 | A kind of high-speed electric main shaft with composite bearing |
| 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 |
| CN110315409A (en) * | 2019-08-09 | 2019-10-11 | 安徽理工大学 | A kind of adaptive laminating apparatus of suspension permanent magnetic milling robot main shaft |
-
2006
- 2006-03-30 CN CN 200620040640 patent/CN2899251Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662180B (en) * | 2008-08-27 | 2011-07-20 | 何君 | Standard magnetic suspension hybrid bearing-supported rotor and high-speed induction electrical rotating machine |
| CN101710754B (en) * | 2009-11-27 | 2012-05-02 | 江苏华雕机械有限公司 | Electric spindle lubricated by water or water mist |
| CN101788012A (en) * | 2010-03-17 | 2010-07-28 | 上海大学 | Rotor system of permanent-magnetic high-temperature super-conduction magnetic bearing |
| CN102570692A (en) * | 2010-12-15 | 2012-07-11 | 江苏华雕机械有限公司 | Electric spindle supported by multivariant bearing |
| CN106112022A (en) * | 2016-08-30 | 2016-11-16 | 上海大学 | A kind of high-speed electric main shaft with composite bearing |
| CN106112022B (en) * | 2016-08-30 | 2019-11-19 | 上海大学 | A kind of high-speed electric main shaft with composite bearing |
| 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 |
| CN110315409A (en) * | 2019-08-09 | 2019-10-11 | 安徽理工大学 | A kind of adaptive laminating apparatus of suspension permanent magnetic milling robot main shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20100330 |