CN102780314B - Direct drive type outer rotor rotation driving device - Google Patents
Direct drive type outer rotor rotation driving device Download PDFInfo
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- CN102780314B CN102780314B CN201210239288.9A CN201210239288A CN102780314B CN 102780314 B CN102780314 B CN 102780314B CN 201210239288 A CN201210239288 A CN 201210239288A CN 102780314 B CN102780314 B CN 102780314B
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Abstract
The invention provides a direct drive type outer rotor rotation driving device, which comprises a supporting body, a winding stator which is fixedly connected with the supporting body, and a permanent magnet rotor, wherein the permanent magnet rotor is coaxially sleeved outside the winding stator and rotates relative to the winding stator, a driven turntable is connected with the permanent magnet rotor and synchronously rotates along with the permanent magnet rotor. The direct drive type outer rotor rotation driving device is simple in structure and low in cost, the stability of the driven turntable can be improved, the jump of the outer edge of the driven turntable is greatly reduced, and the direct drive type outer rotor rotation driving device has the characteristics of high radiating property, no wear, convenience for installation and adjustment and the like and is suitable for industrial automatic equipment with various types.
Description
Technical field
The present invention relates to a kind of direct-drive type device for revolving and driving, particularly a kind of direct-drive type external rotor device for revolving and driving.
Background technology
For realizing precision rotating motion or low-speed big gyration, generally adopt device for revolving and driving to add the indirect type of drive of the mechanical transmissioning pieces such as gear box or worm and gear.Although this indirect type of drive can realize the precision rotating motion of general and even degree of precision, also can realize low-speed big gyration, but mechanical transmissioning piece easily reduces system reliability and transmission efficiency, and there is mechanical wear and mechanical clearance, lifetime of system because of mechanical wear or fatigue failure often more limited, need periodic maintenance.In some accurate occasion, this indirect type of drive needs the high mechanical transmissioning piece of precision, and often the price of mechanical transmissioning piece accounts for the more than 60% of system price, even occurs that mechanical transmissioning piece price is much higher than the situation of motor price.
For solving the deficiency of indirect type revolution type of drive, many scientific and technical personnel have proposed direct revolution type of drive, adopt direct-drive type device for revolving and driving, and direct driving of driven table top do not needed to any mechanical transmissioning piece.This direct drive mode can be realized with the rigidity of load and be coupled to cancel the mechanical transmissioning pieces such as gear box, the contactless operation that also can realize between relative motion parts is safeguarded to eliminate mechanical wear, reduction noise, raising useful life minimizing, thereby is easy to realize the unapproachable performance of indirect type of drive, life and reliability.
In practice, due to driven table top, often diameter is larger, and the elongated formula inner rotor core of the general employing of direct-drive type device for revolving and driving, in this structure, the ratio of rotor diameter and motor axial height is less, and minor diameter rotor directly drives the driven table top of major diameter, causes a small amount of beating on rotor can be amplified to driven table top, driven table top outward flange is beated larger, can not even running.Thereby have scientific and technical personnel to propose to adopt outer rotor direct driving type device for revolving and driving, and can beat to a certain degree reducing driven table top outward flange, improve its stationarity.But because the ratio of rotor diameter and motor axial height is little, there is heat dissipation problem in motor, need to adopt water-cooled or increase the modes such as heat radiation parts, and motor cost is higher, the stationarity of driven table top also has the space further promoting.
Summary of the invention
Technical purpose of the present invention is the state of the art for above-mentioned direct-drive type device for revolving and driving, a kind of direct-drive type external rotor device for revolving and driving is provided, this device can further improve the stationarity of driven table top, the outward flange that greatly reduces driven table top is beated, and there is good heat dissipation, technique is simple, cost is low, without wearing and tearing, the features such as easy to adjust are installed, be applicable in all types of industries automation equipment.
The present invention realizes the technical scheme that above-mentioned technical purpose adopts: a kind of direct-drive type external rotor device for revolving and driving, be used for driving rotation of rotary table motion, it is characterized in that: the winding stator that comprise supporter, is fixedly connected with supporter, and coaxial sleeve is connected on winding stator p-m rotor outside and that winding stator rotates relatively;
Described p-m rotor comprises rotor exterior ring, is distributed in several rotor yokes of rotor exterior ring inwall, and is distributed in several magnet steel along rotor exterior ring radial magnetizing on each rotor yoke inwall; The magnetizing direction of described adjacent two magnet steel differs 180 degree; Described turntable is fixedly connected with rotor exterior ring and with rotor exterior ring synchronous rotary;
Described winding stator comprises several winding iron cores, and several windings are installed on each winding iron core; Between described magnet steel and winding iron core, there is fixedly air gap;
Described supporter comprises stator supporter and bearing; Described winding stator is fixedly connected on stator supporter, between described stator supporter and turntable, has gap; The interior ring of described bearing and stator supporter interference fit are also fixing, and the outer shroud of bearing and rotor exterior ring interference fit are also fixing.
For be more conducive to heat radiation, described stator supporter inside is preferably hollow cavernous structure, this structure also help simultaneously reduce this drive unit volume, alleviate its weight; As further preferred, described hole wall is provided with stator supporter radiating groove.
In order to prevent that dust, iron filings etc. from entering bearing, or enter the fixedly air gap between magnet steel and winding iron core module, preferably in p-m rotor external stability, connect rotor enclosing cover, this rotor enclosing cover is fixedly connected with rotor exterior ring and with rotor exterior ring synchronous rotary.As further preferably, described rotor enclosing cover near stator supporter 41 and and stator supporter 41 between there is a small amount of gap.
In order to prevent that dust, iron filings etc. from entering winding stator by the space between turntable and stator supporter and p-m rotor is inner, filter screen is preferably set between stator supporter and turntable, and has gap between this filter screen and turntable.
In order to improve motor process, save material simultaneously, reduce costs, to be convenient to install and to adjust, described p-m rotor adopts modular rotor yoke module, and winding stator adopts modular winding iron core module.
The stationarity of rotating in order to improve driven turntable table top, the diameter of described p-m rotor and the ratio of axial height are preferably greater than or equal to 2.
In sum, the invention provides a kind of direct-drive type external rotor device for revolving and driving, adopt supporter, winding stator and p-m rotor to form, turntable connects p-m rotor and with p-m rotor synchronous rotary, compared with prior art, has following beneficial effect:
(1) simple in structure, cost is low, can improve the stationarity of driven table top, the outward flange that greatly reduces driven table top is beated;
(2) easy to adjust without wearing and tearing, installing, be applicable in all types of industries automation equipment;
(3) stator supporter preferably arranges large diameter hole and stator supporter radiating groove is preferably set, and is not only beneficial to heat radiation, and is conducive to reduce volume, the weight reduction of drive unit;
(4) preferably adopt modular rotor yoke and winding iron core module, be conducive to improve the processing performance of motor, be beneficial to saving material simultaneously, reduce costs;
(5) preferably adopt rotor enclosing cover and filter screen to form protection to the fixedly air gap between p-m rotor and winding stator, prevent that dust, iron filings etc. from entering air gap, is conducive to improve motor stabilizing.
Accompanying drawing explanation
Fig. 1 is the structural representation of direct-drive type external rotor device for revolving and driving in the embodiment of the present invention.
Embodiment
Below with reference to drawings and Examples, the present invention will be further described, it is pointed out that the following stated embodiment is intended to be convenient to the understanding of the present invention, and it is not played to any restriction effect.
Reference numeral in Fig. 1 is: p-m rotor 20, winding stator 30, supporter 40, rotor exterior ring 21, rotor yoke module 22, magnet steel 23, winding iron core module 31, winding 32, stator supporter 41, bearing 42, rotor enclosing cover 43, turntable 44, filter screen 45, stator supporter radiating groove 46, large diameter hole 47.
Direct-drive type external rotor device for revolving and driving in the present embodiment as shown in Figure 1, is comprised of p-m rotor 20, winding stator 30 and supporter 40.
P-m rotor 20 is coaxial with winding stator 30, and is positioned at the outside of winding stator 30.Winding stator 30 is fixedly connected with the stator supporter 41 in supporter 40.P-m rotor 20 relatively winding stator 30 rotates vertically.
P-m rotor 20 comprises a rotor exterior ring 21, rotor exterior ring inwall M the rotor yoke module 22 that distributing, in each rotor yoke module 22, absorption has N the magnet steel 23 that quantity is equal, each magnet steel 23 is along rotor exterior ring 21 radial magnetizings, and the magnetizing direction of adjacent two magnet steel 23 differs 180 degree.Wherein, N is even number, and M * N number of poles that is motor.The diameter of p-m rotor 20 and the ratio of axial height are more than or equal to 2.
Winding stator 30 comprises L winding iron core module 31, and P winding 32, the number of teeth that L * P is motor are housed in each winding iron core module 31.Between all magnet steel 23 and winding iron core module 31, there is fixedly air gap.
Prop up overfill protection 40 and comprise stator supporter 41 and bearing 42.Stator supporter 41 is fixedly connected with winding stator 30, and the interior ring of bearing 42 and stator supporter 41 interference fit are also fixing, and the outer shroud of bearing 42 and rotor exterior ring 21 interference fit are also fixing.
Large diameter hole 47 is opened in stator supporter 41 inside, is hollow cavernous structure, and hole wall is provided with stator supporter radiating groove 46, be beneficial to heat radiation, also help simultaneously reduce drive unit volume, alleviate its weight.
Rotor exterior ring 21 external stabilities connect rotor enclosing covers 43, and this rotor enclosing cover 43 is with rotor exterior ring 21 synchronous rotaries, and this rotor enclosing cover 43 near stator supporter 41 and and stator supporter 41 between there is a small amount of gap.
Turntable 44 is fixedly connected with rotor exterior ring 21 and with rotor exterior ring 21 synchronous rotaries.Between turntable 44 and stator supporter 41, filter screen 45 is set, this filter screen 45 be fixed on stator supporter 41 and and turntable 44 between there is a small amount of gap.
By bearing 42, rotor exterior ring 21 only can rotate by relative stator bearing 41, and p-m rotor 20 also only can rotate relative to winding stator 30 simultaneously.By rotor enclosing cover 43, can prevent dust, iron filings etc. enter bearing 42 or enter magnet steel 23 and winding iron core module 31 between fixedly air gap.By filter screen 45, can prevent that dust, iron filings etc. from entering the fixedly air gap between magnet steel 23 and winding iron core module 31 by the space between turntable 44 and stator supporter 41.
Rotor yoke module 22 and winding iron core module 31 are permeability magnetic material, and magnet steel 23 is permanent magnetic material.
In direct-drive type external rotor device for revolving and driving in the present embodiment, stator supporter 41 maintains static, and winding stator 30 is fixedly connected with stator supporter 41, and rotor exterior ring 21 is fixedly connected with yoke module 22, magnet steel 23.By bearing 42, rotor exterior ring 21 only relative stator bearing 41 rotates, and p-m rotor 20 also only rotates relative to winding stator 30.By winding stator 30 being passed into suitable electric current, produce rotating magnetic field, the permanent-magnetic field of this rotating magnetic field and p-m rotor 20 interacts, and p-m rotor 20 is rotated relative to winding stator 30.
Because the diameter of p-m rotor 20 and the ratio of axial height are more than or equal to 2, this flat structure is conducive to increase the diameter of turntable 44 and p-m rotor 20 connecting portions, and then improves the stationarity of turntable 44.
In normal thrust, equate in situation, because the diameter of p-m rotor 20 and the ratio of axial height are more than or equal to 2, in this flat structure, the diameter of bore of stator supporter 41 is larger, be more conducive to heat radiation, add the lifting of 46 pairs of heat dispersions of stator supporter radiating groove, be conducive to reducing of external rotor drive unit volume and weight of the present invention.
Owing to adopting modular rotor yoke module 22 and winding iron core module 31, be conducive to improve the processing performance of motor, be convenient to install and adjust, be beneficial to saving material simultaneously, reduce costs.
By the fixedly air gap between rotor enclosing cover 43 and 45 pairs of magnet steel 23 of filter screen and winding iron core module 31, form protection, prevent that dust, iron filings etc. from entering air gap, is conducive to improve motor stabilizing.
Above-described embodiment has been described in detail technical scheme of the present invention; be understood that and the foregoing is only specific embodiments of the invention; be not limited to the present invention; all any modifications of making within the scope of principle of the present invention, supplement or similar fashion substitutes etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a direct-drive type external rotor device for revolving and driving, be used for driving turntable (44) gyration, it is characterized in that: comprise supporter (40), the winding stator (30) being fixedly connected with supporter (40), and coaxial sleeve is connected on winding stator (30) p-m rotor (20) outside and that winding stator (30) rotates relatively;
Described p-m rotor (20) comprises rotor exterior ring (21), is distributed in several rotor yokes (22) of rotor exterior ring (21) inwall, and is distributed in several magnet steel (23) along rotor exterior ring (21) radial magnetizing on each rotor yoke (22) inwall; The magnetizing direction of adjacent two magnet steel (23) differs 180 degree; Described turntable (44) is fixedly connected with rotor exterior ring (21) and with rotor exterior ring (21) synchronous rotary;
Described winding stator (30) adopts modular winding iron core module, comprises several winding iron cores (31), upper several windings (32) of installing of each winding iron core (31); Between described magnet steel (23) and winding iron core (31), there is fixedly air gap;
Described supporter (40) comprises stator supporter (41) and bearing (42); It is upper that described winding stator (30) is fixedly connected on stator supporter (41), between described stator supporter (41) and turntable (44), has gap; The interior ring of described bearing (42) and stator supporter (41) interference fit are also fixing, and the outer shroud of bearing (42) and rotor exterior ring (21) interference fit are also fixing;
The diameter of described p-m rotor (20) and the ratio of axial height are more than or equal to 2; Described stator supporter (41) inside is hollow cavernous structure; Stator supporter radiating groove (46) is set on hole wall.
2. direct-drive type external rotor device for revolving and driving according to claim 1, it is characterized in that: described p-m rotor (20) external stability connects rotor enclosing cover (43), described rotor enclosing cover (43) is fixedly connected with rotor exterior ring (21) and with rotor exterior ring (21) synchronous rotary.
3. direct-drive type external rotor device for revolving and driving according to claim 2, is characterized in that: described rotor enclosing cover (43) near stator supporter (41) and and stator supporter (41) between there is gap.
4. direct-drive type external rotor device for revolving and driving according to claim 1, it is characterized in that: between described stator supporter (41) and turntable (44), filter screen (45) is set, between described filter screen (45) and turntable (44), has gap.
5. direct-drive type external rotor device for revolving and driving according to claim 1, is characterized in that: described p-m rotor (20) adopts modular rotor yoke module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210239288.9A CN102780314B (en) | 2012-07-11 | 2012-07-11 | Direct drive type outer rotor rotation driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210239288.9A CN102780314B (en) | 2012-07-11 | 2012-07-11 | Direct drive type outer rotor rotation driving device |
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| CN102780314A CN102780314A (en) | 2012-11-14 |
| CN102780314B true CN102780314B (en) | 2014-09-03 |
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| CN201210239288.9A Active CN102780314B (en) | 2012-07-11 | 2012-07-11 | Direct drive type outer rotor rotation driving device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181435A (en) * | 2016-08-26 | 2016-12-07 | 景德镇翼腾科技有限公司 | Electric turntable and control method thereof |
| CN106272887A (en) * | 2016-10-13 | 2017-01-04 | 景德镇翼腾科技有限公司 | A kind of Blank drawing machine |
| CN108462312A (en) * | 2018-01-31 | 2018-08-28 | 湖北环电磁装备工程技术有限公司 | The screw washer that rimless combination type permanent-magnet synchronous motor directly drives |
| CN108462313A (en) * | 2018-01-31 | 2018-08-28 | 湖北环电磁装备工程技术有限公司 | The gun turret rotating device that rimless combination type permanent-magnet synchronous motor directly drives |
| CN109510401A (en) * | 2018-11-02 | 2019-03-22 | 华南理工大学 | Cooling water channel and its manufacturing method, the external rotor electric machine and its cooling system of external rotor electric machine |
| CN114598110A (en) * | 2022-03-18 | 2022-06-07 | 苏州天弘激光股份有限公司 | DD motor with large aperture and limited rotation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2277598Y (en) * | 1996-12-05 | 1998-04-01 | 中国人民解放军第四八一三工厂 | Miniature disk electric machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4473716B2 (en) * | 2004-12-01 | 2010-06-02 | ミネベア株式会社 | Fluid dynamic bearing device, spindle motor provided with the fluid dynamic bearing device, and recording disk drive device |
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- 2012-07-11 CN CN201210239288.9A patent/CN102780314B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2277598Y (en) * | 1996-12-05 | 1998-04-01 | 中国人民解放军第四八一三工厂 | Miniature disk electric machine |
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