CN105703520B - Magnetic suspension bearing high-speed motor with air bearing auxiliary - Google Patents
Magnetic suspension bearing high-speed motor with air bearing auxiliary Download PDFInfo
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- CN105703520B CN105703520B CN201410678554.7A CN201410678554A CN105703520B CN 105703520 B CN105703520 B CN 105703520B CN 201410678554 A CN201410678554 A CN 201410678554A CN 105703520 B CN105703520 B CN 105703520B
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- toroidal magnet
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Abstract
The invention discloses a kind of magnetic suspension bearing high-speed motors with air bearing auxiliary, shaft-cup, first air bearing, electric machine casing, second air bearing, rear end cap is arranged successively fixed installation composition stator, rotor and air bearing shaft interporal lacuna are cooperatively connected, the first conical surface toroidal magnet is fixedly mounted in the shaft-cup inner sidewall, the second conical surface toroidal magnet and third conical surface toroidal magnet is fixedly mounted in the motor shaft both ends respectively, the 4th conical surface toroidal magnet is fixedly mounted in the rear end cap inner sidewall, first conical surface toroidal magnet and the pairing of the second conical surface toroidal magnet homopolar-repulsion, also homopolar-repulsion matches another pair magnet, present invention employs air bearing and the advantages of permanent-magnet suspension bearing to be combined with each other, save a large amount of compressed air, improve the motor operation efficiency of half.
Description
Technical field
The present invention relates to a kind of motors, and in particular to a kind of magnetic suspension bearing high-speed motor with air bearing auxiliary.
Background technique
The high-speed main spindle on lathe is applied at present（Mainly underloading, the occasion of high speed, working speed 100,000 per minute
Turn -35 ten thousand turns, such as PCB drilling machine）Using the high-speed motor that compressed air bearing supports, this motor largely makes now
With, technology maturation, but this motor needs to expend a large amount of compressed air（The motor of general 1KW needs the sky of mating 1KW or so
Press power）, working efficiency is not high and maintenance is cumbersome, also have using small-sized machine bearing, but revolving speed generally 80,000 turns with
Under, and power of motor needs to increase, it is inefficient.
Summary of the invention
In order to overcome the spindle motor of present compressed air bearing support due to needing a large amount of compressed airs caused by energy consumption
Problem and maintenance issues, present invention employs air bearing and the advantages of permanent-magnet suspension bearing to be combined with each other, it is only necessary to rise in motor
It moves former seconds and is passed through compressed air, i.e. cut-off compressed air, only relies on permanent magnetic suspending shaft after motor reaches rated speed
It holds and is supported operation, so as to save 95 or more percent compressed air, thus synthesis energy saving about 4 percent
15 or so.
In order to achieve the above object, this invention takes following technical schemes：Band air bearing auxiliary of the present invention
Magnetic suspension bearing high-speed motor, including it is drive end bearing bracket, rear end cap, electric machine casing, shaft-cup, rotor, the first air bearing, second empty
Gas bearing, it is fixed that shaft-cup, the first air bearing, electric machine casing, the second air bearing, rear end cap are arranged successively fixed installation composition
Son, rotor are set to stator center by motor shaft, and rotor is respectively between the first air bearing axis hole and the second air bearing axis hole
Gap is cooperatively connected, and motor shaft passes through shaft-cup centre bore and rear end cap centre bore, drive end bearing bracket screw-casing sympodium lid, the shaft-cup inside
The first conical surface toroidal magnet is fixedly mounted in wall, and the second conical surface toroidal magnet and third cone is fixedly mounted in the motor shaft both ends respectively
The 4th conical surface toroidal magnet, first conical surface toroidal magnet and institute is fixedly mounted in face toroidal magnet, the rear end cap inner sidewall
State the pairing of the second conical surface toroidal magnet homopolar-repulsion, the third conical surface toroidal magnet and the 4th conical surface toroidal magnet homopolarity
Repel each other pairing；Ventilation pipe, the first air being fixedly connected with the electric machine casing and the shaft-cup are equipped with inside the shaft-cup
The end face of bearing is equipped with duct, is equipped with gas storehouse, the duct and the ventilation pipe, the gas storehouse inside the electric machine casing
Between be interconnected；The gas storehouse is opened up there are two gas outlet, respectively with the blowhole of first air bearing and described the
The blowhole of two air bearing is connected to；The drive end bearing bracket is equipped with air access port, and the air access port is connected to ventilation pipe,
The gas entered from the air access port passes through ventilation pipe and duct enters gas storehouse, most distinguishes afterwards through the gas outlet in gas storehouse
Into the first air bearing blowhole and the second air bearing blowhole.
Preferably, the rotor is cage rotor.
Specifically, stator coil is fixedly mounted on the electric machine casing inner sidewall, the stator coil position can basis
Need design in the middle part of the electric machine casing inner sidewall or end.
Specifically, first conical surface toroidal magnet and second conical surface toroidal magnet homopolar-repulsion pairing are cylindrical
Structure forms magnetic suspension bearing；The third conical surface toroidal magnet and the 4th conical surface toroidal magnet homopolar-repulsion pairing are in
Cylindrical-shaped structure forms magnetic suspension bearing.
Preferably, first air bearing and second air bearing are the air axis that can produce radial buoyancy
It holds.
Preferably, the stand-off distance of the rotor and the first air bearing axis hole and the cooperation of the second air bearing shaft interporal lacuna is
15-50μm。
The beneficial effects of the invention are as follows：It is combined with each other, saves big using air bearing and the advantages of permanent-magnet suspension bearing
The compressed air of amount, 95 percent compressed air can be saved by simple analysis, to reach the electricity for improving half
Machine operational efficiency.
Detailed description of the invention
Fig. 1 is cross-sectional view of the present invention along axis.
Specific embodiment
The present invention provides it is a kind of with air bearing auxiliary magnetic suspension bearing high-speed motor, for make the purpose of the present invention,
Technical solution and better effect understand, clear, below with reference to attached drawing and gives an actual example that the present invention is described in more detail, should manage
Solution, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is cross-sectional view of the present invention along axis.
As shown in Figure 1, the magnetic suspension bearing high-speed motor of the invention with air bearing auxiliary, including drive end bearing bracket 1, rear end
Lid 2, electric machine casing 3, shaft-cup 4, rotor 5, the first air bearing 6, the second air bearing 7, shaft-cup 4, the first air bearing 6, electricity
Casing body 3, the second air bearing 7, rear end cap 2 are arranged successively fixed installation composition stator, and it is fixed that rotor 5 is set to by motor shaft 8
Subcenter, rotor 5 are connect with 6 axis hole of the first air bearing and 7 axis hole clearance fit of the second air bearing respectively, and motor shaft 8 is worn
2 centre bore of 4 centre bore of shaft-cup and rear end cap, 1 screw-casing sympodium lid 4 of drive end bearing bracket are crossed, first conical surface is fixedly mounted in 4 inner sidewall of shaft-cup
The second conical surface toroidal magnet 10 and third conical surface toroidal magnet 11, rear end is fixedly mounted in toroidal magnet 9,8 both ends of motor shaft respectively
The 4th conical surface toroidal magnet 12,10 homopolarity of the first conical surface toroidal magnet 9 and the second conical surface toroidal magnet is fixedly mounted in 2 inner sidewall of lid
Repel each other pairing, third conical surface toroidal magnet 11 and the pairing of 12 homopolar-repulsion of the 4th conical surface toroidal magnet；Ventilation is equipped with inside shaft-cup 4
The end face of pipeline 13, the first air bearing 6 being fixedly connected with electric machine casing 3 and shaft-cup 4 is equipped with duct 14, electric machine casing 3
Inside is equipped with gas storehouse 15, is interconnected between duct 14 and ventilation pipe 13, gas storehouse 15；Gas storehouse 15 is opened up there are two gas outlet,
It is connected to respectively with the blowhole 17 of the blowhole 16 of the first air bearing 6 and the second air bearing 7；Drive end bearing bracket 1 connects equipped with air
Entrance 18, air access port 18 are connected to ventilation pipe 13, and the gas entered from air access port 18 passes through 13 He of ventilation pipe
Duct 14 enters gas storehouse 15, most respectively enters the first air bearing blowhole 16 and the second air through the gas outlet in gas storehouse 15 afterwards
Bearing blowhole 17.
In the present embodiment, rotor 5 is cage rotor, and stator coil 19 is fixedly mounted on 3 inner sidewall of electric machine casing,
The position of stator coil 19 can design as needed in the middle part of 3 inner sidewall of electric machine casing or end, at this time 20 position of mouse cage
Also corresponding to change, it is matched with stator coil, when the design of stator coil 19 is at 3 inner sidewall end of electric machine casing, positioned at motor casing
First air bearing 6 of 3 end of body or the second air bearing position 7 are moved to 3 middle part of electric machine casing.
In the present embodiment, the first conical surface toroidal magnet 9 and the pairing of 10 homopolar-repulsion of the second conical surface toroidal magnet are in cylinder
Shape structure forms magnetic suspension bearing；Third conical surface toroidal magnet 11 and the pairing of 12 homopolar-repulsion of the 4th conical surface toroidal magnet are in circle
Column structure forms magnetic suspension bearing.
In the present embodiment, the first air bearing 6 and the second air bearing 7 are that can produce the air bearing of radial buoyancy.
Preferably, the gap of rotor 5 and 6 axis hole of the first air bearing and 7 axis hole clearance fit of the second air bearing
Away from being 15-50 μm, it is ensured that aerostatic buoyancy.
Working principle of the present invention is as follows：Before motor needs to start, it first is passed through compressed air from air access port 18, is pressed
Stream of compressed air finally enters air bearing, air bearing can generate pressure will be with sky through ventilation pipe 13, duct 14 and gas storehouse 15
The parallel stable suspersion of rotor relative stator of gas bearing axis hole clearance fit connection gets up, simultaneously because the magnetic suspension bearing at both ends
Promotion so that rotor is kept axial suspending stabilized, at this time rotor can stable suspersion in the stator between air-gap in, then be passed through phase
The electric current answered, rotor will be rotated vacantly, after reaching certain revolving speed, turn off compressed air, due to gyroscopic effect, be turned
The rotary shaft direction of son will not change, and magnetic suspension bearing rotor side is forced through Newtonian mechanics analysis, meeting to stator side
By radial and axial two component, so rotor rotates the stable heart in the stator.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as, it is noted that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Range is protected, therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. it is a kind of with air bearing auxiliary magnetic suspension bearing high-speed motor, including drive end bearing bracket, rear end cap, electric machine casing, shaft-cup,
Rotor, the first air bearing, the second air bearing, shaft-cup, the first air bearing, electric machine casing, the second air bearing, rear end cap
It is arranged successively fixed installation composition stator, rotor is set to stator center by motor shaft, and stator coil is fixedly mounted on the electricity
In casing body on side wall, rotor is cooperatively connected with the first air bearing axis hole and the second air bearing shaft interporal lacuna respectively, motor
Axis passes through shaft-cup centre bore and rear end cap centre bore, drive end bearing bracket screw-casing sympodium lid, it is characterised in that：The shaft-cup inner sidewall is solid
Dingan County fills the first conical surface toroidal magnet, and the second conical surface toroidal magnet and third taper-face ring is fixedly mounted in the motor shaft both ends respectively
Shape magnet, the rear end cap inner sidewall are fixedly mounted the 4th conical surface toroidal magnet, first conical surface toroidal magnet and described the
The pairing of two taper-face ring shape magnet homopolar-repulsions, first conical surface toroidal magnet and second conical surface toroidal magnet are cylindrical
Structure forms magnetic suspension bearing；The third conical surface toroidal magnet and the 4th conical surface toroidal magnet homopolar-repulsion pairing；Institute
It states and is equipped with ventilation pipe inside shaft-cup, on the end face for the first air bearing being fixedly connected with the electric machine casing and the shaft-cup
Equipped with duct, it is equipped with gas storehouse inside the electric machine casing, is mutually interconnected between the duct and the ventilation pipe, the gas storehouse
It is logical；The gas storehouse is opened up there are two gas outlet, respectively with the blowhole of first air bearing and second air bearing
Blowhole connection；The drive end bearing bracket is equipped with air access port, and the air access port is connected to ventilation pipe, from the air
The gas that access port enters passes through ventilation pipe and duct enters gas storehouse, most respectively enters the first sky through the gas outlet in gas storehouse afterwards
Gas bearing blowhole and the second air bearing blowhole.
2. the magnetic suspension bearing high-speed motor according to claim 1 with air bearing auxiliary, it is characterised in that：Described turn
Son is cage rotor.
3. the magnetic suspension bearing high-speed motor according to claim 1 with air bearing auxiliary, it is characterised in that：It is described fixed
Subcoil position is in the middle part of the electric machine casing inner sidewall or end.
4. the magnetic suspension bearing high-speed motor according to claim 1 with air bearing auxiliary, it is characterised in that：Described
One conical surface toroidal magnet and second conical surface toroidal magnet homopolar-repulsion pairing, the third conical surface toroidal magnet and described the
Four conical surface toroidal magnet homopolar-repulsions match cylindrical structure, form magnetic suspension bearing.
5. the magnetic suspension bearing high-speed motor according to claim 1 with air bearing auxiliary, it is characterised in that：Described
One air bearing and second air bearing are that can produce the air bearing of radial buoyancy.
6. the magnetic suspension bearing high-speed motor according to claim 1 with air bearing auxiliary, it is characterised in that：Described turn
The stand-off distance that son cooperates with the first air bearing axis hole and the second air bearing shaft interporal lacuna is 15-50 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410678554.7A CN105703520B (en) | 2014-11-24 | 2014-11-24 | Magnetic suspension bearing high-speed motor with air bearing auxiliary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410678554.7A CN105703520B (en) | 2014-11-24 | 2014-11-24 | Magnetic suspension bearing high-speed motor with air bearing auxiliary |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105703520A CN105703520A (en) | 2016-06-22 |
| CN105703520B true CN105703520B (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410678554.7A Active CN105703520B (en) | 2014-11-24 | 2014-11-24 | Magnetic suspension bearing high-speed motor with air bearing auxiliary |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10634154B2 (en) * | 2016-07-25 | 2020-04-28 | Daikin Applied Americas Inc. | Centrifugal compressor and magnetic bearing backup system for centrifugal compressor |
| TWI680406B (en) * | 2018-11-14 | 2019-12-21 | 由田新技股份有限公司 | Suspended double-sided optical inspection apparatus |
| CN110445300A (en) * | 2019-08-26 | 2019-11-12 | 珠海格力电器股份有限公司 | Double-stator motor |
| CN111049309A (en) * | 2019-12-11 | 2020-04-21 | 无锡市源昌机械制造有限公司 | High-performance air bearing motor |
| CN112039262B (en) * | 2020-08-04 | 2021-08-10 | 雷茨智能装备(广东)有限公司 | Motor and air suspension centrifugal fan applying same |
| CN113819143B (en) * | 2021-09-30 | 2023-12-22 | 北京京冶轴承股份有限公司 | Mixed strutting arrangement of high-speed train bogie and bogie |
| CN114251359B (en) * | 2021-11-19 | 2024-06-07 | 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 |
|---|---|---|---|---|
| DE102008029482A1 (en) * | 2008-06-20 | 2009-12-24 | Schaeffler Kg | Bearing, particularly bearing of thread guiding roller of textile machine, for shaft at axle, has magnetic radial bearing and another magnetic radial bearing at axial distance from former magnetic radial bearing |
| CN201696491U (en) * | 2010-05-24 | 2011-01-05 | 山东科技大学 | Conical permanent magnetic suspended inner rotor hybrid magnetic bearing |
| CN103189659A (en) * | 2010-10-29 | 2013-07-03 | 奥依列斯工业株式会社 | Roll device |
| CN104006079A (en) * | 2014-05-07 | 2014-08-27 | 西安理工大学 | Halbach tapered permanent magnetic bearing comprising permanent magnetic rings having triangular cross sections |
| CN204118949U (en) * | 2014-11-24 | 2015-01-21 | 雷虹桥 | With the magnetic suspension bearing high-speed electric expreess locomotive that air bearing is auxiliary |
-
2014
- 2014-11-24 CN CN201410678554.7A patent/CN105703520B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008029482A1 (en) * | 2008-06-20 | 2009-12-24 | Schaeffler Kg | Bearing, particularly bearing of thread guiding roller of textile machine, for shaft at axle, has magnetic radial bearing and another magnetic radial bearing at axial distance from former magnetic radial bearing |
| CN201696491U (en) * | 2010-05-24 | 2011-01-05 | 山东科技大学 | Conical permanent magnetic suspended inner rotor hybrid magnetic bearing |
| CN103189659A (en) * | 2010-10-29 | 2013-07-03 | 奥依列斯工业株式会社 | Roll device |
| CN104006079A (en) * | 2014-05-07 | 2014-08-27 | 西安理工大学 | Halbach tapered permanent magnetic bearing comprising permanent magnetic rings having triangular cross sections |
| CN204118949U (en) * | 2014-11-24 | 2015-01-21 | 雷虹桥 | With the magnetic suspension bearing high-speed electric expreess locomotive that air bearing is auxiliary |
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|---|---|
| CN105703520A (en) | 2016-06-22 |
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