CN102427290A - High-torque and low-inertia direct-driving motor - Google Patents
High-torque and low-inertia direct-driving motor Download PDFInfo
- Publication number
- CN102427290A CN102427290A CN2011103348681A CN201110334868A CN102427290A CN 102427290 A CN102427290 A CN 102427290A CN 2011103348681 A CN2011103348681 A CN 2011103348681A CN 201110334868 A CN201110334868 A CN 201110334868A CN 102427290 A CN102427290 A CN 102427290A
- Authority
- CN
- China
- Prior art keywords
- stator tooth
- stator
- rotor
- drive motors
- direct drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention relates to a high-torque and low-inertia direct-driving motor. The direct-driving motor comprises a motor shell and driving components arranged in the motor shell, wherein the driving components comprise a stator, a rotor, a movable structure and a bearing; the stator comprises an outer stator and an inner stator; the rotator is arranged between the outer stator and the inner stator; a gap is formed between the rotator and the outer stator; a gap is formed between the rotator and the inner stator; the bearing is arranged on the motor shell; the rotator is connected with the movable structure; and the movable structure is in fit connection with the bearing. The high-torque and low-inertia direct-driving motor has the advantages that: the design of the direct-driving rotating motor is used for directly driving load under the condition of not using any transmission devices. The directly driven load can reduce inertia moments of rotating pieces. In addition, a feedback device is arranged and is used for directly measuring rotating positions, inaccuracy caused by back lash can be eliminated, and any abrasion on the transmission devices is eliminated at the same time.
Description
Technical field
The present invention relates to a kind of drive motors, particularly relate to the direct drive motors of the low inertia of a kind of high torque (HT).
Background technology
Brushless servo motor has been widely used in industrial circle, especially the factory automation field.Most widely used brushless servo motor be the continuous output scope at 100W to the brushless servo motor between the 1KW.Above-mentioned motor all adopts batch process, and generally is three phase electric machine, and is supporting with widely used standard servo amplifier.Therefore, brushless servo motor has very high economy.But as far as many application, the torque that above-mentioned servomotor produces is not enough, and the nominal rotating speed of the above-mentioned servomotor of needed rotating ratio is much lower.Therefore, many transmission devices such as gear and belt all with the supporting use of servomotor, thereby can increase torque output, reduce rotating speed.Can cause accuracy not high having increased transmission device, and easy to wear.In addition, transmission device can increase the inertia torque of motor, has therefore weakened the dynamic property of motor.
Therefore, in recent years, the use of direct drive servovalve motor is more and more general, and in practical application, has also replaced traditional brushless servo motor gradually.The diameter of direct drive servovalve motor is bigger, and the torque of generation is also bigger, and therefore, the direct drive servovalve motor can directly drive load, and need not to use any transmission device.Because directly the level of torque that produces of driven in rotation motor is enough to directly drive load, therefore, people increase torque output making in various manners.It is desirable to the motor that a kind of rotor inertia is low, torque output is high.
Summary of the invention
The objective of the invention is in order to solve the existing many defectives of drive motors in the prior art, provide the direct drive motors of the low inertia of a kind of high torque (HT) to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is following:
The direct drive motors of the low inertia of a kind of high torque (HT) comprises motor case and the driven unit that is arranged in the motor case, it is characterized in that; Said driven unit comprises stator, rotor, bascule and bearing; Said stator comprises external stator and internal stator, and said rotor is arranged between external stator and the internal stator, is provided with the gap between said rotor and the external stator; Be provided with the gap between said rotor and the internal stator; Said bearing is arranged on the motor case, and said rotor connects bascule, and bascule and bearing are connected.
The direct drive motors of the low inertia of above-mentioned a kind of high torque (HT) is characterized in that, said stator adopts one of the following material to process: include but not limited to lamination silicon steel plate, mild steel and Qi Tong magnetic material.
The direct drive motors of the low inertia of above-mentioned a kind of high torque (HT); It is characterized in that; Said rotor comprises the supporting construction that the low-density nonmagnetic substance is processed and is arranged at a plurality of permanent magnets on the supporting construction; Said supporting construction is provided with a plurality of cavitys, and said a plurality of permanent magnets are arranged in the cavity of supporting construction.
The material of the above supporting construction adopts nonmagnetic substance, includes but not limited to one of the following: aluminium, fibre reinforced plastics, resin.
The direct drive motors of the low inertia of above-mentioned a kind of high torque (HT); It is characterized in that; The inner ring of said external stator is provided with a plurality of external stator teeth, and the outer ring of said internal stator is provided with and the corresponding internal stator tooth of external stator tooth, is provided with coil on said external stator tooth and the internal stator tooth and twines.
The direct drive motors of the low inertia of above-mentioned a kind of high torque (HT) is characterized in that, the number ratio of said permanent magnet, internal stator tooth and external stator tooth is one of following: the number of permanent magnet is 24, and the number of internal stator tooth and external stator tooth is 18; The number of permanent magnet is 16, and the number of internal stator tooth and external stator tooth is 18; The number of permanent magnet is 16, and the number of internal stator tooth and external stator tooth is 21; The number of permanent magnet is 24, and the number of internal stator tooth and external stator tooth is 27.
The direct drive motors of the low inertia of above-mentioned a kind of high torque (HT) is characterized in that said driven unit also comprises position feedback device, and said position feedback device is arranged on motor case and the rotor.
The direct drive motors of the low inertia of above-mentioned a kind of high torque (HT) is characterized in that said bascule is connected the outer ring of bearing.
The direct drive motors of the low inertia of above-mentioned a kind of high torque (HT) is characterized in that said bascule is connected the inner ring of bearing.
The beneficial effect that the present invention has: this direct driven in rotation design of electrical motor is used under the situation of not using any conduction device, directly driving load.Directly drive the moment of inertia that load can reduce revolving part.In addition, the feedback device of installation in order to direct measurement position of rotation, can be eliminated any inaccuracy that produces because of backlash, has eliminated any wearing and tearing of conduction device equally.
Description of drawings
Fig. 1 is a profile of the present invention;
Fig. 2 is the structural representation of rotor;
Fig. 3 be among Fig. 1 A-A to profile;
Fig. 4 is the partial enlarged drawing of driven unit;
Fig. 5 is the profile of another one embodiment of the present invention;
Fig. 6 is the profile of yet another embodiment of the invention.
Embodiment
For making architectural feature of the present invention and the effect reached there are further understanding and understanding, cooperate detailed explanation, explain as follows in order to preferred embodiment and accompanying drawing:
Referring to Fig. 1; The direct drive motors of the low inertia of a kind of high torque (HT); Comprise motor case 100 and the driven unit 200 that is arranged in the motor case 100; Driven unit 200 comprises stator 210, rotor 220, bascule 300 and bearing 400, and stator 210 adopts the lamination silicon steel plate to process, and stator 210 also can adopt mild steel and Qi Tong magnetic material to process.Stator 210 comprises external stator 211 and internal stator 212; Rotor 220 is arranged between external stator 211 and the internal stator 212, is provided with the gap between rotor 220 and the external stator 211, is provided with the gap between rotor 220 and the internal stator 212; Bearing 400 is arranged on the motor case 100; Rotor 220 connects bascule 300, and bascule 300 is connected with bearing 400, and bascule 300 is the outer rings that are connected bearing 400.Rotor 220 can rotate around bearing 400 and between external stator 211 and internal stator 212 through connecting bascule 300.
Referring to Fig. 2; Rotor 220 comprises the supporting construction 221 that the low-density nonmagnetic substance is processed and is arranged at a plurality of permanent magnets 222 on the supporting construction 221; Supporting construction 221 is provided with a plurality of cavitys, and a plurality of permanent magnets 222 are arranged in the cavity of supporting construction 221.
In the present invention, the nonmagnetic substance of supporting construction 221 is one of following: aluminium, fibre reinforced plastics, resin, in preferred embodiment, the material of supporting construction 221 is an aluminium therein.
Referring to Fig. 3, the inner ring of external stator 211 is provided with a plurality of external stator teeth 213, and the outer ring of internal stator 212 is provided with and external stator tooth 213 corresponding internal stator teeth 215, and the external stator tooth is provided with coil 214 and twines, and the internal stator tooth is provided with coil 216 and twines.
Referring to Fig. 4, the permanent magnet 222 on the rotor 220 has alternating polarity, and an end face is to external stator 211, and the other end is to internal stator 212.Align each other between internal stator tooth 215 and the external stator tooth 213.The senses of current are identical in the coil 216 that twines on the sense of current in the coil 214 that twines on the external stator tooth 213 and the internal stator tooth 215, make flux circuit directly pass through permanent magnet 222 vertically, thereby parallel with permanent magnet 222 polarity.Through this kind design, significantly reduced the magnetic leakage between the permanent magnet 222, strengthened the transmission capacity of motor.
In the present invention, the number ratio of permanent magnet 222, internal stator tooth 215 and external stator tooth 213 is one of following: the number of permanent magnet 222 is 24, and internal stator tooth 213 is 18 with the number of external stator tooth 215; The number of permanent magnet 222 is 16, and internal stator tooth 213 is 18 with the number of external stator tooth 215; The number of permanent magnet 222 is 16, and internal stator tooth 213 is 21 with the number of external stator tooth 215; The number of permanent magnet 222 is 24, and internal stator tooth 213 is 27 with the number of external stator tooth 215.And the present invention can be varied to the slot number combination with any other slot number number that matees with the three-phase brushless rectification.
Referring to Fig. 5; Fig. 5 is an another embodiment of the invention; In this execution mode; Position feedback device 500 is an encoder, comprises the encoder read head 520 that is arranged on the motor case 100 and is arranged at the encoder grating 510 on the rotor 220, reads the position of encoder grating 510 rotations through encoder read head 520 and collects desired position information.
Referring to Fig. 6, Fig. 6 is an another embodiment of the invention, in this execution mode; Bascule 300 is connected the inner ring of bearing 400; This kind design makes the inner ring of bearing 400 to rotate, and the outer ring keeps fixing, so the rotatory inertia of motor further reduces.
In the present invention, owing to adopted two groups of coils, so the torque ratio that is produced only adopts the traditional design of one group of stator coil high a lot.Rotor 220 has no break iron simultaneously, and its moment of inertia is very low., rotor 220 materials are low density material, because rotor 220 materials and do not require to have magnetic conductivity so just can further reduce the moment of inertia of rotor 220.High torque (HT) and low inertia can significantly improve the dynamic property of motor.
In sum; Be merely preferred embodiment of the present invention; Be not to be used for limiting the scope that the present invention implements, all equalizations of doing according to the described shape of claim scope of the present invention, structure, characteristic and spirit change and modify, and all should be included in the claim scope of the present invention.
Claims (9)
1. the direct drive motors of the low inertia of high torque (HT) comprises motor case and the driven unit that is arranged in the motor case, it is characterized in that; Said driven unit comprises stator, rotor, bascule and bearing; Said stator comprises external stator and internal stator, and said rotor is arranged between external stator and the internal stator, is provided with the gap between said rotor and the external stator; Be provided with the gap between said rotor and the internal stator; Said bearing is arranged on the motor case, and said rotor connects bascule, and bascule and bearing are connected.
2. according to the direct drive motors of the low inertia of the said a kind of high torque (HT) of claim 1, it is characterized in that said stator adopts one of the following material to process: include but not limited to lamination silicon steel plate, mild steel and Qi Tong magnetic material.
3. hang down the direct drive motors of inertia according to the said a kind of high torque (HT) of claim 1; It is characterized in that; Said rotor comprises the supporting construction that the low-density nonmagnetic substance is processed and is arranged at a plurality of permanent magnets on the supporting construction; Said supporting construction is provided with a plurality of cavitys, and said a plurality of permanent magnets are arranged in the cavity of supporting construction.
4. according to the direct drive motors of the low inertia of the said a kind of high torque (HT) of claim 3, it is characterized in that the material of said supporting construction adopts nonmagnetic substance, includes but not limited to one of the following: aluminium, fibre reinforced plastics, resin.
5. hang down the direct drive motors of inertia according to the said a kind of high torque (HT) of claim 3; It is characterized in that; The inner ring of said external stator is provided with a plurality of external stator teeth; The outer ring of said internal stator is provided with and the corresponding internal stator tooth of external stator tooth, is provided with coil on said external stator tooth and the internal stator tooth and twines.
6. hang down the direct drive motors of inertia according to the said a kind of high torque (HT) of claim 5; It is characterized in that; The number of said permanent magnet, internal stator tooth and external stator tooth includes but not limited to one of the following: the number of permanent magnet is 24, and the number of internal stator tooth and external stator tooth is 18; The number of permanent magnet is 16, and the number of internal stator tooth and external stator tooth is 18; The number of permanent magnet is 16, and the number of internal stator tooth and external stator tooth is 21; The number of permanent magnet is 24, and the number of internal stator tooth and external stator tooth is 27.
7. according to the direct drive motors of the low inertia of the said a kind of high torque (HT) of claim 1, it is characterized in that said driven unit also comprises position feedback device, said feedback device is arranged on motor case and the rotor.
8. according to the direct drive motors of the low inertia of the said a kind of high torque (HT) of claim 1, it is characterized in that said bascule is connected the outer ring of bearing.
9. according to the direct drive motors of the low inertia of the said a kind of high torque (HT) of claim 1, it is characterized in that said bascule is connected the inner ring of bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103348681A CN102427290A (en) | 2011-10-28 | 2011-10-28 | High-torque and low-inertia direct-driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103348681A CN102427290A (en) | 2011-10-28 | 2011-10-28 | High-torque and low-inertia direct-driving motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102427290A true CN102427290A (en) | 2012-04-25 |
Family
ID=45961240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103348681A Pending CN102427290A (en) | 2011-10-28 | 2011-10-28 | High-torque and low-inertia direct-driving motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102427290A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723828A (en) * | 2012-06-29 | 2012-10-10 | 乐山东风汽车电器有限公司 | Portable permanent-magnet direct-drive double-stator wind power generator |
| CN103023245A (en) * | 2012-12-26 | 2013-04-03 | 国电联合动力技术有限公司 | Double-bearing support double-stator switch magnetic-resistance wind power generator and unit system thereof |
| CN103178668A (en) * | 2013-03-06 | 2013-06-26 | 华中科技大学 | Radial magnetic field double-stator vernier motor |
| CN111149280A (en) * | 2017-09-28 | 2020-05-12 | 姜道铉 | Rotary electric apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2708330Y (en) * | 2004-02-17 | 2005-07-06 | 上海鲍麦克斯电子科技有限公司 | Device for detecting rotor position of motor |
| US20050275359A1 (en) * | 2004-05-18 | 2005-12-15 | Kesatoshi Takeuchi | Relative drive device |
| CN2914476Y (en) * | 2006-05-19 | 2007-06-20 | 深圳市大族精密机电有限公司 | Polarizer rotor |
| US7791245B1 (en) * | 2009-03-24 | 2010-09-07 | Gm Global Technology Operations, Inc. | Optimized electric machine for smart actuators |
| WO2011096888A1 (en) * | 2010-02-02 | 2011-08-11 | Akribis Systems Pte Ltd | Permanent magnet motors without magnet back iron |
| CN202282690U (en) * | 2011-10-28 | 2012-06-20 | 雅科贝思精密机电(上海)有限公司 | High-torque low-inertia direct drive motor |
-
2011
- 2011-10-28 CN CN2011103348681A patent/CN102427290A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2708330Y (en) * | 2004-02-17 | 2005-07-06 | 上海鲍麦克斯电子科技有限公司 | Device for detecting rotor position of motor |
| US20050275359A1 (en) * | 2004-05-18 | 2005-12-15 | Kesatoshi Takeuchi | Relative drive device |
| CN2914476Y (en) * | 2006-05-19 | 2007-06-20 | 深圳市大族精密机电有限公司 | Polarizer rotor |
| US7791245B1 (en) * | 2009-03-24 | 2010-09-07 | Gm Global Technology Operations, Inc. | Optimized electric machine for smart actuators |
| WO2011096888A1 (en) * | 2010-02-02 | 2011-08-11 | Akribis Systems Pte Ltd | Permanent magnet motors without magnet back iron |
| CN202282690U (en) * | 2011-10-28 | 2012-06-20 | 雅科贝思精密机电(上海)有限公司 | High-torque low-inertia direct drive motor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723828A (en) * | 2012-06-29 | 2012-10-10 | 乐山东风汽车电器有限公司 | Portable permanent-magnet direct-drive double-stator wind power generator |
| CN102723828B (en) * | 2012-06-29 | 2013-11-20 | 乐山东风汽车电器有限公司 | Portable permanent-magnet direct-drive double-stator wind power generator |
| CN103023245A (en) * | 2012-12-26 | 2013-04-03 | 国电联合动力技术有限公司 | Double-bearing support double-stator switch magnetic-resistance wind power generator and unit system thereof |
| CN103178668A (en) * | 2013-03-06 | 2013-06-26 | 华中科技大学 | Radial magnetic field double-stator vernier motor |
| CN103178668B (en) * | 2013-03-06 | 2015-12-09 | 华中科技大学 | Radial magnetic field double-stator vernier motor |
| CN111149280A (en) * | 2017-09-28 | 2020-05-12 | 姜道铉 | Rotary electric apparatus |
| EP3691086A4 (en) * | 2017-09-28 | 2021-06-16 | Kang, Dohyun | Rotating electric device |
| US11289956B2 (en) | 2017-09-28 | 2022-03-29 | Dohyun KANG | Rotating electric device |
| CN111149280B (en) * | 2017-09-28 | 2023-06-30 | 姜道铉 | Rotary electrical device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Uppalapati et al. | A magnetic gearbox with an active region torque density of 239 N· m/L | |
| CN202737714U (en) | Brushless permanent magnetism direct current motor with sectional offset high speed rotor magnetic pole | |
| CN101662192B (en) | Brushless-fed dual-rotor motor | |
| CN103222165B (en) | Three phase permanent magnet servomotor | |
| CN103929041B (en) | A kind of magnetic suspension permanent magnet linear motor | |
| WO2013032401A1 (en) | High torque, low inertia direct drive motor | |
| CN105515229A (en) | Disc type motor | |
| CN105471212B (en) | A kind of rotational alignment magneto | |
| CN203537199U (en) | Permanent magnet synchronous combination motor | |
| CN203911720U (en) | Magnetic suspension permanent magnetism linear motor | |
| CN103986301A (en) | High-dynamic moving-magnetic type linear rotation integrated two-degree-of-freedom motor | |
| CN101789646B (en) | Multivariant linear arc-shaped motor | |
| CN102427290A (en) | High-torque and low-inertia direct-driving motor | |
| CN110518724A (en) | Stator permanent magnetic type non-bearing flake motor and its working method | |
| CN103078464B (en) | Built-in permanent magnet synchronous motor | |
| CN104682642B (en) | A kind of two-freedom motor | |
| CN202602458U (en) | Magnetic-conductance harmonic-wave electromagnetic gear combined permanent magnet motor with double machinery ports | |
| CN202282690U (en) | High-torque low-inertia direct drive motor | |
| CN105978213B (en) | The magnetic liquid suspension bearing of disc type electric machine | |
| CN202068306U (en) | Three-phase permanent magnetic servo motor with void slot structure | |
| CN203827109U (en) | Magnetic energy power generator and magnetic energy power generation system | |
| CN203734393U (en) | Stator permanent magnet mixture stepping electromotor | |
| CN202068307U (en) | Three-phase permanent-magnetic servo electric motor | |
| CN102497073B (en) | Transverse magnetic flux type brushless feed double-rotor motor | |
| CN104079136A (en) | Three-phase switch reluctance machine and sine stator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120425 |