CN102158003B - Air magnetic bearing motor - Google Patents
Air magnetic bearing motor Download PDFInfo
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- CN102158003B CN102158003B CN 201110046242 CN201110046242A CN102158003B CN 102158003 B CN102158003 B CN 102158003B CN 201110046242 CN201110046242 CN 201110046242 CN 201110046242 A CN201110046242 A CN 201110046242A CN 102158003 B CN102158003 B CN 102158003B
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- air
- bearing
- rotor
- side plate
- air bearing
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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 air magnetic bearing motor.
Background technology
The processing of the part of high accuracy, best bright finish needs the relative high speed of cutting tool and workpiece, friction or little vibration rotation, and the motor that tradition is equipped with rolling or 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 air magnetic bearing motor, have High Rotation Speed lower bearing temperature low, the vibration small, the characteristics of long service life.Can eliminate by the regulating action of steel ball and magnet the axial endplay that the bearing rotor axle produces.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 shell, described axis of rotor rotation is by the air bearing supporting that is arranged on the body two ends, described air bearing is circulus, be provided with the compressed air guiding gutter in it, the entrance of guiding gutter is connected 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, an end in axis of rotor rotation is provided with side plate, an annular permanent magnnet respectively is installed on described side plate and air bearing mount pad, two blocks of magnet of described permanent magnet in opposite directions end face to reach with one heart pole polarity identical.
Compared with prior art, beneficial effect of the present invention is,
Due to the structural design that has adopted air bearing, because bearing does not contact with bearing holder (housing, cover), thereby can realize without the friction High Rotation Speed.Have High Rotation Speed lower bearing temperature low, the vibration small, the characteristics of long service life.Can eliminate by the regulating action of steel ball and magnet the axial endplay that the bearing rotor axle produces.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 is the local enlarged diagram of this device.
Embodiment
comprise body fuselage 12 and stator 1, be provided with cage rotor 13 in shell 12, as Fig. 1, shown in 2, described rotor 13 rotation axiss are by air bearing 10 supportings that are arranged on the body two ends, described air bearing 10 is circulus, be provided with compressed air guiding gutter 9 in it, the entrance of guiding gutter 9 is connected with compressed air inlet pipe 8, described guiding gutter 9 is provided with a plurality of flow controllers 7, its outlet is the gap of 11, air bearing 10 and armature spindle axle sleeve, an end at rotor 13 rotation axiss is provided with side plate 6, on described side plate 6 and air bearing 10 mount pads, an annular permanent magnnet 3 is installed respectively, 3 two blocks of magnet of described permanent magnet in opposite directions end face to reach with one heart pole polarity identical.
The end face of described rotor 13 rotation axiss is provided with a semicircle circular hole, is provided with steel ball 5 in 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 arranged on rotation axis, and rotation axis can be realized the High Rotation Speed of the low friction of motor, low vibration, low temperature by the air bearing supporting that is arranged on the body two ends, and transmission accuracy is high, and the life-span is long.
Air bearing is circulus, is provided with the compressed air guiding gutter in it, and the entrance of guiding gutter is connected 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 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 side plate, an annular permanent magnnet is being installed respectively, two blocks of magnet in opposite directions end face to reach with one heart pole polarity identical.
Be provided with a plurality of radially adjustable dynamic balancing adjustment screw on the non-transmision end air bearing mount pad of axis of rotor rotation.
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, be provided with two identical ringshaped magnets of polarity on air bearing mount pad and outer panel; The 4th, be provided with a plurality of radially adjustable dynamic balancing adjustment screw on the air bearing mount pad.
2 operation principles
After motor stator energising, the AC magnetic field of generation makes the stator moment that rotates, and motor is rotated.During motor operation, pass into compressed air in air bearing, compressed air enters the flow controller that is distributed on 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, thereby drive motor rotates.The pre-pressing structure that steel ball by being arranged on the rotor axle head and push rod form is regulated, to eliminate the axial normality play of armature spindle; Can eliminate by the mutual repulsion effect of two blocks of permanent magnets the axially random play that armature spindle produces in rotation process.Adjust the dynamic balancing of armature spindle by regulating the adjustment screw that arranges on the air bearing mount pad.Said structure can make motor realize at a high speed, steadily rotate.
3 functions
3.1 rotating speed of transmission shaft can reach the high speed of 20000r/min～50000r/min.
3.2 the inside and outside shaft room of bearing is without rolling or the sliding friction generation, bear vibration is small, temperature is low.
Running noises is little, long service life.
Claims (3)
1. air magnetic bearing motor, comprise body fuselage (12) and stator (1), be provided with cage rotor (13) in shell (12), it is characterized in that, described rotor (13) rotation axis is supported by the air bearing that is arranged on the body two ends (10), described air bearing (10) is circulus, be provided with compressed air guiding gutter (9) in it, the entrance of guiding gutter (9) is connected 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), an end at rotor (13) rotation axis is provided with side plate (6), on air bearing (10) mount pad of described side plate (6) and side plate (6) one ends, an annular permanent magnnet (3) is installed respectively, (3) two blocks of magnet of described permanent magnet in opposite directions end face to reach with one heart pole polarity identical.
2. a kind of air magnetic bearing 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 circular hole, and steel ball (5) is compressed by an axial adjustable push rod (4).
3. a kind of air magnetic bearing 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 CN102158003A (en) | 2011-08-17 |
| CN102158003B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244011B (en) * | 2021-11-19 | 2023-05-26 | 青岛海尔空调电子有限公司 | Compressor and refrigerating system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3071489B2 (en) * | 1991-02-22 | 2000-07-31 | 株式会社日平トヤマ | Non-contact bearing overload detection device |
-
2011
- 2011-02-27 CN CN 201110046242 patent/CN102158003B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平5-187441A 1993.07.27 |
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| Publication number | Publication date |
|---|---|
| CN102158003A (en) | 2011-08-17 |
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