CN102780314A - Direct drive type outer rotor rotation driving device - Google Patents
Direct drive type outer rotor rotation driving device Download PDFInfo
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- CN102780314A CN102780314A CN2012102392889A CN201210239288A CN102780314A CN 102780314 A CN102780314 A CN 102780314A CN 2012102392889 A CN2012102392889 A CN 2012102392889A CN 201210239288 A CN201210239288 A CN 201210239288A CN 102780314 A CN102780314 A CN 102780314A
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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 mechanical transmissioning pieces such as gear box or worm and gear.Though this indirect type of drive can realize the precision rotating motion of general and even degree of precision; Also can realize the low-speed big gyration; But mechanical transmissioning piece reduces system reliability and transmission efficiency easily; And have mechanical wear and mechanical clearance, lifetime of system is often more limited because of mechanical wear or fatigue failure, needs 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 more than 60% of system price, even the situation that the mechanical transmissioning piece price is much higher than the motor price occurs.
For solving the deficiency of indirect type revolution type of drive, many scientific and technical personnel have proposed direct revolution type of drive, promptly adopt the direct-drive type device for revolving and driving, do not need any mechanical transmissioning piece to directly being driven by the driving table top.This direct drive mode can be realized being coupled with mechanical transmissioning pieces such as cancellation gear boxes with the rigidity of load; Also can realize contactless operation between the relative motion parts eliminating mechanical wear, reduce noise, to improve useful life and reduce and safeguard, thereby be easy to realize the unapproachable performance of indirect type of drive, life-span and reliability.
In practice, often diameter is bigger owing to driven table top, 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 promptly the minor diameter rotor directly drives major diameter and driven table top, cause on the rotor a spot of beat to be amplified to driven table top; Make driven the table top outward flange beat bigger, can not even running.Thereby have scientific and technical personnel to propose to adopt the outer rotor direct driving type device for revolving and driving, and can beat to a certain degree reducing to be driven the 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 modes such as water-cooled or increase heat radiation parts, and motor cost is higher, and the stationarity that is driven table top also has the space that further promotes.
Summary of the invention
Technical purpose of the present invention is the state of the art to 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 that is driven table top; The outward flange that reduces to be driven table top is greatly beated, and have good heat dissipation, technology is simple, cost is low, do not have wearing and tearing, characteristics such as easy to adjust are installed, be applicable in all types of industries automation equipment.
The present invention realizes that the technical scheme that above-mentioned technical purpose adopts is: a kind of direct-drive type external rotor device for revolving and driving; Be used to drive the turntable gyration; It is characterized in that: the winding stator that comprise supporter, is fixedly connected, and the coaxial outside and p-m rotor that rotates of winding stator relatively of winding stator that is socketed in supporter;
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 the 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 rotates synchronously with rotor exterior ring;
Described winding stator comprises several winding iron cores, and several windings are installed on each winding iron core; There is fixedly air gap between described magnet steel and the winding iron core;
Described supporter comprises stator supporter and bearing; Described winding stator is fixedly connected on the stator supporter, has the gap between described stator supporter and the turntable; 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.
In order to be more conducive to heat radiation, described stator supporter inside is preferably the hollow cavernous structure, and this structure also helps the volume that reduces this drive unit simultaneously, alleviates its weight; Preferred as further, described hole wall is provided with the stator supporter radiating groove.
In order to prevent that dust, iron filings etc. from getting into bearing, perhaps get into the fixedly air gap between magnet steel and the winding iron core module, preferably connect the rotor enclosing cover in p-m rotor external stability, this rotor enclosing cover is fixedly connected with rotor exterior ring and rotates synchronously with rotor exterior ring.Preferred as further, described rotor enclosing cover near stator supporter 41 and and stator supporter 41 between have little clearance.
In order to prevent that dust, iron filings etc. from getting into the winding stator through the space between turntable and the stator supporter and p-m rotor is inner, filter screen preferably is set between stator supporter and turntable, and has the gap between this filter screen and the turntable.
In order to improve motor process property, simultaneously economical with materials, reduce cost, be convenient to install and adjustment, described p-m rotor adopts modular rotor yoke module, the winding stator adopts modular winding iron core module.
Driven the stationarity that the turntable table top rotates in order to improve, the diameter of described p-m rotor and the ratio of axial height are preferably greater than or equal 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 constitute, turntable connects p-m rotor and rotates synchronously with p-m rotor, compared with prior art, has following beneficial effect:
(1) simple in structure, cost is low, can improve the stationarity that is driven table top, the outward flange that reduces to be driven table top is greatly beated;
(2) do not have wearing and tearing, install easy to adjustly, be applicable in all types of industries automation equipment;
(3) stator supporter preferably is provided with large diameter hole and stator supporter radiating groove preferably is set, and not only is beneficial to heat radiation, and helps reducing volume, the weight reduction of drive unit;
(4) preferably adopt modular rotor yoke and winding iron core module, help improving the processing performance of motor, be beneficial to economical with materials simultaneously, reduce cost;
(5) preferably adopt rotor enclosing cover and filter screen that the fixedly air gap between p-m rotor and the winding stator is formed protection, prevent that dust, iron filings etc. from getting into air gap, helps improving motor stabilizing property.
Description of drawings
Fig. 1 is the structural representation of direct-drive type external rotor device for revolving and driving in the embodiment of the invention.
Embodiment
Below will combine accompanying drawing and embodiment that the present invention is further specified, and it is pointed out that the following stated embodiment is intended to be convenient to understanding of the present invention, and it is not played any qualification effect.
Reference numeral among 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 is as shown in Figure 1, is made up of p-m rotor 20, winding stator 30 and supporter 40.
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.
Rotor exterior ring 21 external stabilities connect rotor enclosing cover 43, and this rotor enclosing cover 43 rotates with rotor exterior ring 21 synchronously, and this rotor enclosing cover 43 near stator supporter 41 and and stator supporter 41 between have little clearance.
Through bearing 42, but only relative stator bearing 41 rotations of rotor exterior ring 21, also only winding stator 30 rotations relatively of p-m rotor 20 simultaneously.Through rotor enclosing cover 43, can prevent that dust, iron filings etc. from getting into bearing 42 or getting into the fixedly air gap between magnet steel 23 and the winding iron core module 31.Through filter screen 45, can prevent that dust, iron filings etc. from getting into the fixedly air gap between magnet steel 23 and the winding iron core module 31 through the space between turntable 44 and the stator supporter 41.
In the direct-drive type external rotor device for revolving and driving in the present embodiment, stator supporter 41 is fixed, 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.Through bearing 42, rotor exterior ring 21 only relative stator bearing 41 rotates, and p-m rotor 20 is only winding stator 30 rotations relatively also.Produce rotating magnetic field through winding stator 30 is fed suitable electric current, the permanent-magnetic field of this rotating magnetic field and p-m rotor 20 interacts, and p-m rotor 20 relative winding stators 30 are rotated.
Because the diameter of p-m rotor 20 and the ratio of axial height are more than or equal to 2, this flat structure helps increasing the diameter of turntable 44 and p-m rotor 20 connecting portions, and then improves the stationarity of turntable 44.
Equate under the situation in normal thrust; Because the diameter of p-m rotor 20 and the ratio of axial height are more than or equal to 2; The diameter of bore of stator supporter 41 is bigger in this flat structure; Be more conducive to heat radiation, add the lifting of 46 pairs of heat dispersions of stator supporter radiating groove, help reducing of external rotor drive unit volume and weight of the present invention.
Owing to adopt modular rotor yoke module 22 and winding iron core module 31, help improving the processing performance of motor, be convenient to install and adjustment, be beneficial to economical with materials simultaneously, reduce cost.
Form protection through the fixedly air gap between rotor enclosing cover 43 and 45 pairs of magnet steel 23 of filter screen and the winding iron core module 31, prevent that dust, iron filings etc. from getting into air gap, helps improving motor stabilizing property.
Above-described embodiment specifies technical scheme of the present invention; Be understood that the above is merely specific embodiment of the present invention; Be not limited to the present invention; All any modifications of in principle scope of the present invention, being made, replenish or similar fashion substitutes etc., all should be included within protection scope of the present invention.
Claims (9)
1. direct-drive type external rotor device for revolving and driving; Be used to drive turntable (44) gyration; It is characterized in that: comprise supporter (40), the winding stator (30) that is fixedly connected with supporter (40), and the coaxial outside and p-m rotor (20) that rotates of winding stator (30) relatively of winding stator (30) that is socketed in;
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 described adjacent two magnet steel (23) differs 180 degree; Described turntable (44) is fixedly connected with rotor exterior ring (21) and rotates synchronously with rotor exterior ring (21);
Described winding stator (30) comprises several winding iron cores (31), and each winding iron core (31) is gone up several windings (32) are installed; There is fixedly air gap between described magnet steel (23) and the winding iron core (31);
Described supporter (40) comprises stator supporter (41) and bearing (42); Described winding stator (30) is fixedly connected on the stator supporter (41), has the gap between described stator supporter (41) and the turntable (44); 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.
2. direct-drive type external rotor device for revolving and driving according to claim 1 is characterized in that: described stator supporter (41) is inner to be the hollow cavernous structure.
3. direct-drive type external rotor device for revolving and driving according to claim 2 is characterized in that: stator supporter radiating groove (46) is set on the described hole wall.
4. 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), and described rotor enclosing cover (43) is fixedly connected with rotor exterior ring (21) and rotates synchronously with rotor exterior ring (21).
5. direct-drive type external rotor device for revolving and driving according to claim 4 is characterized in that: described rotor enclosing cover (43) near stator supporter (41) and and stator supporter (41) between have the gap.
6. direct-drive type external rotor device for revolving and driving according to claim 1 is characterized in that: between described stator supporter (41) and the turntable (44) filter screen (45) is set, has the gap between described filter screen (45) and the turntable (44).
7. 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.
8. direct-drive type external rotor device for revolving and driving according to claim 1 is characterized in that: described winding stator (30) adopts modular winding iron core module.
9. according to the described direct-drive type external rotor of arbitrary claim device for revolving and driving in the claim 1 to 8, it is characterized in that: the diameter of described p-m rotor (20) and the ratio of axial height are preferably greater than or equal 2.
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 |
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| 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 true CN102780314A (en) | 2012-11-14 |
| CN102780314B 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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Cited By (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 |
| 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 |
| 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 |
| 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 (2)
| 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 |
| US20080095480A1 (en) * | 2004-12-01 | 2008-04-24 | Minebea Co., Ltd. | Fluid Dynamic Pressure Bearing Device, Spindle Motor Provided with the Fluid Dynamic Pressure Bearing Device, and Recording Disk Drive Device |
-
2012
- 2012-07-11 CN CN201210239288.9A patent/CN102780314B/en active Active
Patent Citations (2)
| 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 |
| US20080095480A1 (en) * | 2004-12-01 | 2008-04-24 | Minebea Co., Ltd. | Fluid Dynamic Pressure Bearing Device, Spindle Motor Provided with the Fluid Dynamic Pressure Bearing Device, and Recording Disk Drive Device |
Cited By (7)
| 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 |
| 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 |
| 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 |
| 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 |
| WO2020088376A1 (en) * | 2018-11-02 | 2020-05-07 | 华南理工大学 | Cooling water channel of external rotor motor and manufacturing method therefor, external rotor motor and cooling system thereof |
| 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 |
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| CN102780314B (en) | 2014-09-03 |
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