CN102158003A - Air magnetic bearing motor - Google Patents
Air magnetic bearing motor Download PDFInfo
- Publication number
- CN102158003A CN102158003A CN2011100462420A CN201110046242A CN102158003A CN 102158003 A CN102158003 A CN 102158003A CN 2011100462420 A CN2011100462420 A CN 2011100462420A CN 201110046242 A CN201110046242 A CN 201110046242A CN 102158003 A CN102158003 A CN 102158003A
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- China
- Prior art keywords
- air
- rotor
- bearing
- air bearing
- side plate
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Abstract
The invention discloses an air magnetic bearing motor, which comprises a frame, a shell and a stator. A cage rotor is arranged in the shell. A rotating shaft of the rotor is supported by air bearings arranged at the two ends of the frame. The air bearing has an annular structure. A compressed air diversion trench is formed in the air bearing, and has an inlet connected with a compressed air inlet pipe. A plurality of throttles are arranged on the diversion trench. An outlet of the diversion trench is an air gap between the air bearing and a shaft sleeve of the rotating shaft. A side plate is arranged at one end of the rotating shaft of the rotor. Two annular permanent magnets are arranged on the side plate and an air bearing mounting seat respectively. The permanent magnets are opposite to each other, and have concentric end faces and magnetic poles with the same polarity. The bearings are contactless with a bearing bush, thereby realizing frictionless high-speed rotation. The air magnetic bearing motor has the characteristics of low bearing temperature in the high-speed rotation, micro vibration and long service life, can eliminate axial movement produced by the bearings and the rotating shaft of the rotor by the regulation of steel balls and the magnets, and can be used as a high-accuracy and high-rotating speed rotating power source.
Description
Technical field
The present invention relates to a kind of motor, particularly a kind of ambient magnetic bearing electric motor.
Background technology
The part processing of high accuracy, best bright finish needs the relative high speed of cutting tool and workpiece, friction or little vibration rotation, tradition to be equipped with to roll or the motor of slip rolling bearing can not satisfy above-mentioned requirements.
Summary of the invention
Its purpose of the present invention just is to provide a kind of ambient magnetic bearing electric motor, have high speed rotating lower bearing temperature low, the vibration small, the characteristics of long service life.Can eliminate the axial endplay that the bearing rotor axle produces by the regulating action of steel ball and magnet.Make this motor can be used as high accuracy and high-revolving rotational power source.
The technical scheme that realizes above-mentioned purpose and take, comprise body fuselage and stator, be provided with cage rotor in the shell, described axis of rotor rotation is by the air bearing supporting that is installed in the body two ends, described air bearing is a circulus, be provided with the compressed air guiding gutter in it, the inlet of guiding gutter links to each other with compressed air inlet pipe, described guiding gutter is provided with a plurality of flow controllers, its outlet is the gap of air bearing and armature spindle shaft room, end in axis of rotor rotation is provided with side plate, and an annular permanent magnnet respectively is installed on described side plate and the air bearing mount pad, two blocks of magnet of described permanent magnet in opposite directions end face to reach pole polarity with one heart identical.
Compared with prior art, beneficial effect of the present invention is,
Owing to adopted the structural design of air bearing,, thereby can realize not having the friction high speed rotating because of bearing does not contact with bearing holder (housing, cover).Have high speed rotating lower bearing temperature low, the vibration small, the characteristics of long service life.Can eliminate the axial endplay that the bearing rotor axle produces by the regulating action of steel ball and magnet.Make this motor can be used as high accuracy and high-revolving rotational power source.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is this apparatus structure schematic perspective view.
Fig. 2 is this apparatus structure schematic front view.
Fig. 3 installs local enlarged diagram for this.
Embodiment
The end face of described rotor 13 rotation axiss is provided with a semicircle circular hole, is provided with steel ball 5 in the circular hole, and steel ball 5 is compressed by an axial adjustable push rod 4.
The mount pad of described rotor 13 rotation axiss is provided with a plurality of radially adjustable dynamic balancing adjustment screw 2.
This device is provided with cage rotor, coil type excitation stator, air bearing, magnetic force side plate etc. in body fuselage.Motor rotor is installed on the rotation axis, and rotation axis can be realized the high speed rotating of the low friction of motor, low vibration, low temperature by the air bearing supporting that is installed in the body two ends, the transmission accuracy height, and the life-span is long.
Air bearing is a circulus, is provided with the compressed air guiding gutter in it, and the inlet of guiding gutter links to each other with compressed air inlet pipe.All established a plurality of flow controllers on guiding gutter, its outlet is the gap of bearing and armature spindle shaft room.
Offer a semicircle circular hole on the non-transmision end end face of axis of rotor rotation, a steel ball is set in the circular hole, steel ball is compressed by an axial adjustable push rod.
On the non-transmision end air bearing mount pad of axis of rotor rotation He on the side plate annular permanent magnnet is being installed respectively, two blocks of magnet in opposite directions end face to reach pole polarity with one heart identical.
On the non-transmision end air bearing mount pad of axis of rotor rotation, be provided with a plurality of radially adjustable dynamic balancing adjustment screw.
1 architectural feature
This motor, the primary structure feature that is different from the other types motor is: the one, adopt air bearing to substitute plain ball bearing; The 2nd, the armature spindle non-transmision end is provided with the pre-tightening mechanism of steel ball and push rod composition; The 3rd, on air bearing mount pad and outer panel, be provided with two identical ringshaped magnets of polarity; The 4th, on the air bearing mount pad, be provided with a plurality of radially adjustable dynamic balancing adjustment screw.
2 operation principles
After the motor stator energising, the AC magnetic field of generation makes the stator moment that rotates, and motor is rotated.During motor work, feed compressed air in air bearing, compressed air enters the flow controller that is distributed on the bearing inner wall through guiding gutter, is injected into the slot between rotor axle sleeve inwall and air bearing inwall, make the armature spindle axle sleeve form the air-cushion type suspension and rotate, rotate thereby drive motor.The pre-pressing structure that steel ball by being arranged on the rotor axle head and push rod are formed is regulated, to eliminate the axial normality play of armature spindle; The axially play at random that can eliminate that armature spindle produces by the mutual repulsion effect of two blocks of permanent magnets in rotation process.By regulating the dynamic balancing that the adjustment screw that is provided with on the air bearing mount pad is adjusted armature spindle.Said structure can make motor realize at a high speed, steadily rotate.
3 functions
3.1 the power transmission shaft rotating speed can reach the high speed of 20000r/min～50000r/min.
Do not roll or the sliding friction generation 3.2 the inside and outside shaft room of bearing has, bear vibration is small, temperature is low.
Running noises is little, long service life.
Claims (3)
1. ambient magnetic bearing electric motor, comprise body fuselage (12) and stator (1), be provided with cage rotor (13) in the shell (12), it is characterized in that, described rotor (13) rotation axis is supported by the air bearing that is installed in the body two ends (10), described air bearing (10) is a circulus, be provided with compressed air guiding gutter (9) in it, the inlet of guiding gutter (9) links to each other with compressed air inlet pipe (8), described guiding gutter (9) is provided with a plurality of flow controllers (7), its outlet is the gap between air bearing (10) and armature spindle axle sleeve (11), end at rotor (13) rotation axis is provided with side plate (6), on described side plate (6) and air bearing (10) mount pad annular permanent magnnet (3) is installed respectively, (3) two blocks of magnet of described permanent magnet in opposite directions end face to reach pole polarity with one heart identical.
2. a kind of ambient magnetic bearing electric motor according to claim 1, it is characterized in that, the end face of described rotor (13) rotation axis is provided with a semicircle circular hole, is provided with steel ball (5) in the circular hole, and steel ball (5) is compressed by an axial adjustable push rod (4).
3. a kind of ambient magnetic bearing electric motor according to claim 1 is characterized in that, the mount pad of described rotor (13) rotation axis is provided with a plurality of radially adjustable dynamic balancing adjustment screw (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110046242 CN102158003B (en) | 2011-02-27 | 2011-02-27 | Air magnetic bearing motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110046242 CN102158003B (en) | 2011-02-27 | 2011-02-27 | Air magnetic bearing motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102158003A true CN102158003A (en) | 2011-08-17 |
| CN102158003B CN102158003B (en) | 2013-06-26 |
Family
ID=44439250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110046242 Active CN102158003B (en) | 2011-02-27 | 2011-02-27 | Air magnetic bearing motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102158003B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244011A (en) * | 2021-11-19 | 2022-03-25 | 青岛海尔空调电子有限公司 | Compressor and refrigerating system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05187441A (en) * | 1991-02-22 | 1993-07-27 | Nippei Toyama Corp | Overload detection device for noncontact bearing |
| US6288465B1 (en) * | 1997-04-28 | 2001-09-11 | Ntn Corporation | Combined externally pressurized gas-magnetic bearing assembly and spindle device utilizing the same |
| US6504279B1 (en) * | 1998-05-27 | 2003-01-07 | Precision Motors Deutsche Minebea Gmbh | Motor mount for small high speed motors |
| CN1754297A (en) * | 2003-02-25 | 2006-03-29 | 松下电器产业株式会社 | Motor using dynamic gas bearings |
| CN201535318U (en) * | 2009-10-19 | 2010-07-28 | 达航工业股份有限公司 | Air bearing |
| CN101951043A (en) * | 2010-10-15 | 2011-01-19 | 无锡哈电电机有限公司 | End ring structure of squirrel cage rotor |
-
2011
- 2011-02-27 CN CN 201110046242 patent/CN102158003B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05187441A (en) * | 1991-02-22 | 1993-07-27 | Nippei Toyama Corp | Overload detection device for noncontact bearing |
| US6288465B1 (en) * | 1997-04-28 | 2001-09-11 | Ntn Corporation | Combined externally pressurized gas-magnetic bearing assembly and spindle device utilizing the same |
| US6504279B1 (en) * | 1998-05-27 | 2003-01-07 | Precision Motors Deutsche Minebea Gmbh | Motor mount for small high speed motors |
| CN1754297A (en) * | 2003-02-25 | 2006-03-29 | 松下电器产业株式会社 | Motor using dynamic gas bearings |
| CN201535318U (en) * | 2009-10-19 | 2010-07-28 | 达航工业股份有限公司 | Air bearing |
| CN101951043A (en) * | 2010-10-15 | 2011-01-19 | 无锡哈电电机有限公司 | End ring structure of squirrel cage rotor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244011A (en) * | 2021-11-19 | 2022-03-25 | 青岛海尔空调电子有限公司 | Compressor and refrigerating system |
| CN114244011B (en) * | 2021-11-19 | 2023-05-26 | 青岛海尔空调电子有限公司 | Compressor and refrigerating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102158003B (en) | 2013-06-26 |
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| C14 | Grant of patent or utility model | ||
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