CN103117633A - High-speed permanent magnet synchronous motor and assembly method thereof - Google Patents
High-speed permanent magnet synchronous motor and assembly method thereof Download PDFInfo
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- CN103117633A CN103117633A CN2013100937895A CN201310093789A CN103117633A CN 103117633 A CN103117633 A CN 103117633A CN 2013100937895 A CN2013100937895 A CN 2013100937895A CN 201310093789 A CN201310093789 A CN 201310093789A CN 103117633 A CN103117633 A CN 103117633A
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Abstract
Disclosed are a high-speed permanent magnet synchronous motor and an assembly method thereof. The motor comprises a motor shell, a motor stator, a spindle rotor component and a pair of bearing assemblies, the bearing assemblies are separately arranged at the front end and the rear end of the shell, the motor stator is fixed into the motor shell, the spindle rotor component is sleeved in the motor stator, two ends of the spindle rotor component are supported on the motor shell through the bearing assemblies, the spindle rotor component comprises a front rotor half shaft, a rotor permanent magnet, a rotor sleeve and a rear rotor half shaft, the rotor permanent magnet is sleeved in the rotor sleeve, one end of the rotor sleeve is fixedly connected with the front rotor half shaft, and the other end of the rotor sleeve is fixedly connected with the rear rotor half shaft. The high-speed permanent magnet synchronous motor is compact in structure, sufficient in space usage, small in radial dimension and particularly suitable for meeting the requirement on high rotation speed. The assembly method includes the steps: 1) mounting the motor stator into the motor shell; 2) assembling the spindle rotor component and magnetizing the rotor permanent magnet in the spindle rotor component after the spindle rotor component is assembled; and 3) mounting the spindle rotor component into the motor stator, and supporting the spindle rotor component on the motor shell through the bearing assemblies.
Description
Technical field
The present invention relates to motor device, relate in particular to a kind of high-speed permanent magnetic synchronous motor and assembly method thereof.
Background technology
Permagnetic synchronous motor is high due to compact conformation, power density, high efficiency, energy-saving and cost-reducing remarkable benefit, is widely applied in fields such as motor, generators.In recent years, industrial circle is more and more urgent to utilizing permagnetic synchronous motor directly to drive the demand of equipment of loaded work piece, and electric main shaft of digital control machine tool, turbine that the air compressor of drives impeller work as direct in magneto, magneto directly drive emery wheel or cutter directly drive high-speed turbine generator of magneto generating etc.The extensive use of the straight drive apparatus of these magnetoes will produce immeasurable energy-saving benefit.
The said equipment utilizes the direct drive principle work of magneto, only competence exertion effect under the very high condition of magneto working speed, and existing rotor structure for permanent magnet motor is difficult to satisfy the needs that run up.
Existing motor rotor construction mainly can be divided into two classes, and a class is that rotor is the hollow cylinder overall structure, directly is sleeved on main shaft; Another kind ofly be rotor permanent magnetism body surface note or be embedded on the main shaft cylindrical.The common deficiency of this dual mode is, the space that rotor permanent magnet distributes is shared by main shaft, and space utilization efficient is low.
Under high speed conditions, rotor centrifugal force is very large, and rotor can expand distortion.This distortion causes the actual magnitude of interference between rotor inner hole and main shaft to reduce, and coupling stiffness reduces, and the circumferential slip of rotor on main shaft easily occurs, and security incident even occurs.If increase the magnitude of interference between rotor inner hole and main shaft, can cause installing difficulty, easily cause the permanent magnet demagnetization because adopting the dressing of rotor heating collar, and not by hot cover process, because permanent magnet fragility is large, easily just be damaged at assembling stage again.
The impact of centrifugal force on the mechanical strength of rotor own when considering high speed, rotor diameter should be as far as possible little.But in order to improve the intensity of axis system, rotor inner hole often requires again large as far as possible.Require greatly at rotor inner hole, external diameter requires under little constraints, and the rotor Electromagnetic Design is very difficult, and adjustable space is very limited.If design power of motor density is excessive, magnetic saturation easily occurs, cause motor performance to descend; Increase power if increase rotor axial length, cause again spindle span to increase, axis system critical whirling speed reduces, and is unfavorable for realizing high speed.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provides a kind of compact conformation, space utilization is abundant, radial dimension is little, be particularly suitable for high-speed permanent magnetic synchronous motor and assembly method thereof that high rotating speed needs.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
a kind of high-speed permanent magnetic synchronous motor, comprise electric machine casing, motor stator, spindle rotor assembly and a pair of bearing assembly that is divided into the housing rear and front end, described motor stator is fixed in electric machine casing, described spindle rotor assembly is set in motor stator, spindle rotor assembly two ends are supported on electric machine casing by bearing assembly, described spindle rotor assembly comprises the rotor half front axle, rotor permanent magnet, semiaxis after rotor sleeve and rotor, described rotor permanent magnet is set in rotor sleeve, described rotor sleeve one end and rotor half front axle are affixed, after the other end and rotor, semiaxis is affixed.
Described rotor permanent magnet is columned permanent magnet.
Described rotor permanent magnet outer circumference surface and rotor sleeve inner peripheral surface close contact.
Be equipped with positioning spigot on semiaxis after described rotor half front axle and rotor, locate by positioning spigot at described rotor sleeve two ends.
After described rotor half front axle and rotor, semiaxis is equipped with the extension that extends in rotor sleeve and offset with the rotor permanent magnet end of body.
After the outer circumference surface of described rotor half front axle, rotor, the outer circumference surface of the outer circumference surface of semiaxis and described rotor sleeve is located on the same face of cylinder.
A kind of assembly method of above-mentioned high-speed permanent magnetic synchronous motor comprises the following steps:
1) motor stator is packed in electric machine casing;
2) assembling spindle rotor assembly;
3) the spindle rotor assembly is packed in motor stator, and by bearing assembly, the spindle rotor assembly is supported on electric machine casing;
Carry out step 2) time, first rotor permanent magnet is set in rotor sleeve, then semiaxis after rotor half front axle and rotor is individually fixed in rotor sleeve two ends, then rotor permanent magnet is magnetized.
Carry out step 2) time, after rotor half front axle and rotor, semiaxis all is welded and fixed with rotor sleeve.
Compared with prior art, the invention has the advantages that:
high-speed permanent magnetic synchronous motor of the present invention, the main shaft of rotor permanent magnet and motor becomes one, and be encapsulated in main shaft inside, take full advantage of the motor internal space, make the structure of rotor compacter, can greatly reduce the radial dimension of motor, the critical whirling speed of axle system significantly improves with respect to traditional structure, satisfy the needs of pot motor, and rotor diameter reduces, the cylindrical area reduces, be conducive to reduce rotor eddy current loss and magnetic hysteresis loss, improve electric efficiency, can utilize more fully rotor space to carry out the motor electromagnetic design, effectively avoided a traditional structural design rotor magnetic saturation difficult problem, reduced the power loss that causes because of magnetic saturation, be conducive to improve electric efficiency, high-speed permanent magnetic synchronous motor of the present invention is compared with existing permagnetic synchronous motor, under identical power and rotating speed torque conditions, motor volume of the present invention dwindles 20% left and right, under identical centrifugal stress condition allowable, can realize higher rotating speed, under identical volume conditions, motor of the present invention can realize that power improves 20% left and right, high-speed permanent magnetic synchronous motor of the present invention is owing to possessing above characteristic, therefore be particularly suitable for the rotating speed requirement high, and the occasion that the space is restricted, the rotor volume reduces to be conducive to save the use amount of permanent magnet material, and cylindrical permanent magnet is easier to make, and said structure can significantly reduce the manufacturing cost of rotor.The assembly method of high-speed permanent magnetic synchronous motor of the present invention, when assembling spindle rotor assembly, first rotor permanent magnet is set in rotor sleeve, again semiaxis after rotor half front axle and rotor is individually fixed in rotor sleeve two ends, then rotor permanent magnet is magnetized, can avoid adopting that the permanent magnet assembling that traditional sleeve type structure Desing of Interference Joint causes damages, when high temperature demagnetization and High Rotation Speed rotor with respect to the circumferential slip of main shaft; Again permanent magnet is magnetized after assembling, can avoid permanent magnet in traditional assembly process first to magnetize refilling wearing because the assembling difficult problem that the permanent magnet strong suction causes.
Description of drawings
Fig. 1 is the structural representation of high-speed permanent magnetic synchronous motor embodiment of the present invention.
Fig. 2 is the schematic flow sheet of assembly method embodiment of the present invention.
In figure, each label represents:
1, electric machine casing; 2, motor stator; 3, spindle rotor assembly; 4, bearing assembly; 5, positioning spigot; 31, rotor half front axle; 32, rotor permanent magnet; 33, rotor sleeve; 34, semiaxis after rotor.
Embodiment
Fig. 1 shows a kind of high-speed permanent magnetic synchronous motor embodiment of the present invention, this high-speed permanent magnetic synchronous motor comprises electric machine casing 1, motor stator 2, spindle rotor assembly 3 and a pair of bearing assembly 4 that is divided into electric machine casing 1 rear and front end, motor stator 2 is fixed in electric machine casing 1, spindle rotor assembly 3 is set in motor stator 2, spindle rotor assembly 3 two ends are supported on electric machine casing 1 by bearing assembly 4, spindle rotor assembly 3 comprises rotor half front axle 31, rotor permanent magnet 32, after rotor sleeve 33 and rotor, semiaxis 34, rotor permanent magnet 32 is set in rotor sleeve 33, rotor sleeve 33 1 ends and rotor half front axle 31 are affixed, after the other end and rotor, semiaxis 34 is affixed, rotor permanent magnet 32 becomes one with the main shaft of motor, and be encapsulated in main shaft inside, take full advantage of the motor internal space, make the structure of rotor compacter, can greatly reduce the radial dimension of motor, can significantly improve the critical whirling speed of axle system, thereby satisfy the needs of pot motor, and rotor diameter reduces, the cylindrical area reduces, be conducive to reduce rotor eddy current loss and magnetic hysteresis loss, improve electric efficiency, simultaneously, can utilize more fully rotor space to carry out the motor electromagnetic design, effectively avoided a traditional structural design rotor magnetic saturation difficult problem, reduced the power loss that causes because of magnetic saturation, be conducive to improve electric efficiency, the rotor volume reduces to also help the use amount of saving permanent magnet material, can significantly reduce the manufacturing cost of rotor.High-speed permanent magnetic synchronous motor of the present invention is compared with existing permagnetic synchronous motor, under identical power and rotating speed torque conditions, motor volume of the present invention dwindles 20% left and right, under identical centrifugal stress condition allowable, can realize higher rotating speed, under identical volume conditions, motor of the present invention can realize that power improves 20% left and right; High-speed permanent magnetic synchronous motor of the present invention is owing to possessing above characteristic, therefore be particularly suitable for the rotating speed requirement high, and the occasion that the space is restricted.
in the present embodiment, rotor permanent magnet 32 is columned permanent magnet, columned permanent magnet is easier to make, rotor permanent magnet 32 outer circumference surfaces and rotor sleeve 33 inner peripheral surface close contacts, be equipped with positioning spigot 5 after rotor half front axle 31 and rotor on semiaxis 34, rotor sleeve 33 two ends are by positioning spigot 5 location, and semiaxis 34 welding after positioning spigot 5 places and rotor half front axle 31 and rotor, after rotor half front axle 31 and rotor, semiaxis 34 is equipped with and extends in rotor sleeve 33, and the extension that offsets with rotor permanent magnet 32 ends, to guarantee the integral rigidity of main shaft.
Fig. 2 shows the flow process of the assembly method embodiment of high-speed permanent magnetic synchronous motor of the present invention, and the method comprises the following steps:
1) motor stator 2 is packed in electric machine casing 1;
2) assembling spindle rotor assembly 3;
3) spindle rotor assembly 3 is packed in motor stator 2, and by bearing assembly 4, spindle rotor assembly 3 is supported on electric machine casing 1;
Carry out step 2) time, first rotor permanent magnet 32 is set in rotor sleeve 33, then semiaxis 34 after rotor half front axle 31 and rotor is individually fixed in rotor sleeve 33 two ends, then rotor permanent magnet 32 is magnetized.
Carry out step 2) time, after rotor half front axle 31 and rotor, semiaxis 34 all is welded and fixed with rotor sleeve 33.
Assembly method of the present invention is damaged in the time of can avoiding adopting the permanent magnet assembling that traditional sleeve type structure Desing of Interference Joint causes, the high temperature demagnetization, and in the time of also can avoiding High Rotation Speed, rotor is with respect to the circumferential slip of main shaft; Again rotor permanent magnet 32 is magnetized after assembling, can avoid permanent magnet in traditional assembly process first to magnetize refilling wearing because the assembling difficult problem that the permanent magnet strong suction causes.
Although the present invention discloses as above with preferred embodiment, yet is not to limit the present invention.Any those of ordinary skill in the art in the situation that do not break away from the technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all should drop in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the technology of the present invention essence.
Claims (8)
1. high-speed permanent magnetic synchronous motor, comprise electric machine casing (1), motor stator (2), spindle rotor assembly (3) and a pair of bearing assembly (4) that is divided into electric machine casing (1) rear and front end, described motor stator (2) is fixed in electric machine casing (1), described spindle rotor assembly (3) is set in motor stator (2), spindle rotor assembly (3) two ends are supported on electric machine casing (1) by bearing assembly (4), it is characterized in that: described spindle rotor assembly (3) comprises rotor half front axle (31), rotor permanent magnet (32), semiaxis (34) after rotor sleeve (33) and rotor, described rotor permanent magnet (32) is set in rotor sleeve (33), described rotor sleeve (33) one ends and rotor half front axle (31) are affixed, semiaxis after the other end and rotor (34) is affixed.
2. high-speed permanent magnetic synchronous motor according to claim 1, it is characterized in that: described rotor permanent magnet (32) is columned permanent magnet.
3. high-speed permanent magnetic synchronous motor according to claim 2, is characterized in that: described rotor permanent magnet (32) outer circumference surface and rotor sleeve (33) inner peripheral surface close contact.
4. the described high-speed permanent magnetic synchronous motor of any one according to claim 1 to 3, it is characterized in that: be equipped with positioning spigot (5) after described rotor half front axle (31) and rotor on semiaxis (34), described rotor sleeve (33) two ends are by positioning spigot (5) location.
5. high-speed permanent magnetic synchronous motor according to claim 4 is characterized in that: after described rotor half front axle (31) and rotor, semiaxis (34) is equipped with the extension that extends in rotor sleeve (33) and offset with rotor permanent magnet (32) end.
6. high-speed permanent magnetic synchronous motor according to claim 5, it is characterized in that: after the outer circumference surface of described rotor half front axle (31), rotor, the outer circumference surface of the outer circumference surface of semiaxis (34) and described rotor sleeve (33) is located on the same face of cylinder.
7. assembly method as high-speed permanent magnetic synchronous motor as described in any one in claim 1 to 6 comprises the following steps:
1) motor stator (2) is packed in electric machine casing (1);
2) assembling spindle rotor assembly (3);
3) spindle rotor assembly (3) is packed in motor stator (2), and by bearing assembly (4), spindle rotor assembly (3) is supported on electric machine casing (1);
It is characterized in that: carry out step 2) time, first rotor permanent magnet (32) is set in rotor sleeve (33), again semiaxis (34) after rotor half front axle (31) and rotor is individually fixed in rotor sleeve (33) two ends, then rotor permanent magnet (32) is magnetized.
8. assembly method according to claim 7, is characterized in that: carry out step 2) time, after rotor half front axle (31) and rotor, semiaxis (34) all is welded and fixed with rotor sleeve (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100937895A CN103117633A (en) | 2013-03-22 | 2013-03-22 | High-speed permanent magnet synchronous motor and assembly method thereof |
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| CN2013100937895A CN103117633A (en) | 2013-03-22 | 2013-03-22 | High-speed permanent magnet synchronous motor and assembly method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124846A (en) * | 2014-08-13 | 2014-10-29 | 四川埃姆克伺服科技有限公司 | Permanent magnet synchronous motor |
| CN104525980A (en) * | 2014-11-26 | 2015-04-22 | 北京航天三发高科技有限公司 | Ultrahigh-speed, high-precision and large-power electric main shaft |
| CN108574357A (en) * | 2018-06-21 | 2018-09-25 | 宁波富佳实业有限公司 | A kind of rotor assembly and permanent magnetic brushless |
| CN109617304A (en) * | 2019-01-23 | 2019-04-12 | 北京智拓博科技有限公司 | A kind of axis and its manufacturing method of used in high-speed motor |
| CN109768687A (en) * | 2019-01-23 | 2019-05-17 | 北京智拓博科技有限公司 | A kind of permanent magnet machine rotor and its manufacturing method and motor and air blower |
| CN113309682A (en) * | 2021-04-28 | 2021-08-27 | 武汉高芯科技有限公司 | High-reliability miniature lightweight linear compressor |
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| US20040051416A1 (en) * | 2002-09-13 | 2004-03-18 | Honda Giken Kogyo Kabushiki Kaisha | Permanent magnet rotor |
| US20070269323A1 (en) * | 2006-05-22 | 2007-11-22 | Lei Zhou | Miniature high speed compressor having embedded permanent magnet motor |
| CN201393160Y (en) * | 2009-03-04 | 2010-01-27 | 上海同济南汇科技产业园有限公司 | High-speed grease bearing permanent magnet motor |
| CN101702557A (en) * | 2009-11-06 | 2010-05-05 | 溧阳福思宝高速机械有限公司 | Dual stator and rotor permanent magnet synchronous motor and assembling method thereof |
| CN101860117A (en) * | 2010-05-27 | 2010-10-13 | 溧阳福思宝高速机械有限公司 | High-speed motor and assembly method thereof |
| CN102158019A (en) * | 2011-04-27 | 2011-08-17 | 华中科技大学 | Magnetization method and magnetization component of permanent magnet motor |
| CN203135671U (en) * | 2013-03-22 | 2013-08-14 | 湖南大学 | High-speed permanent magnet synchronous motor |
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2013
- 2013-03-22 CN CN2013100937895A patent/CN103117633A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040051416A1 (en) * | 2002-09-13 | 2004-03-18 | Honda Giken Kogyo Kabushiki Kaisha | Permanent magnet rotor |
| US20070269323A1 (en) * | 2006-05-22 | 2007-11-22 | Lei Zhou | Miniature high speed compressor having embedded permanent magnet motor |
| CN201393160Y (en) * | 2009-03-04 | 2010-01-27 | 上海同济南汇科技产业园有限公司 | High-speed grease bearing permanent magnet motor |
| CN101702557A (en) * | 2009-11-06 | 2010-05-05 | 溧阳福思宝高速机械有限公司 | Dual stator and rotor permanent magnet synchronous motor and assembling method thereof |
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| CN102158019A (en) * | 2011-04-27 | 2011-08-17 | 华中科技大学 | Magnetization method and magnetization component of permanent magnet motor |
| CN203135671U (en) * | 2013-03-22 | 2013-08-14 | 湖南大学 | High-speed permanent magnet synchronous motor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124846A (en) * | 2014-08-13 | 2014-10-29 | 四川埃姆克伺服科技有限公司 | Permanent magnet synchronous motor |
| CN104525980A (en) * | 2014-11-26 | 2015-04-22 | 北京航天三发高科技有限公司 | Ultrahigh-speed, high-precision and large-power electric main shaft |
| CN108574357A (en) * | 2018-06-21 | 2018-09-25 | 宁波富佳实业有限公司 | A kind of rotor assembly and permanent magnetic brushless |
| CN109617304A (en) * | 2019-01-23 | 2019-04-12 | 北京智拓博科技有限公司 | A kind of axis and its manufacturing method of used in high-speed motor |
| CN109768687A (en) * | 2019-01-23 | 2019-05-17 | 北京智拓博科技有限公司 | A kind of permanent magnet machine rotor and its manufacturing method and motor and air blower |
| CN113309682A (en) * | 2021-04-28 | 2021-08-27 | 武汉高芯科技有限公司 | High-reliability miniature lightweight linear compressor |
| CN113309682B (en) * | 2021-04-28 | 2022-11-04 | 武汉高芯科技有限公司 | High-reliability miniature lightweight linear compressor |
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Application publication date: 20130522 |