CN205377484U - Improve permanent -magnet alternating -current servo motor rotor of air gap flux - Google Patents
Improve permanent -magnet alternating -current servo motor rotor of air gap flux Download PDFInfo
- Publication number
- CN205377484U CN205377484U CN201620195978.2U CN201620195978U CN205377484U CN 205377484 U CN205377484 U CN 205377484U CN 201620195978 U CN201620195978 U CN 201620195978U CN 205377484 U CN205377484 U CN 205377484U
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- CN
- China
- Prior art keywords
- permanent magnet
- magnet
- servo motor
- motor rotor
- permanent
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an improve permanent -magnet alternating -current servo motor rotor of air gap flux, consolidate cover, its characterized in that including pivot, permanent magnet and permanent magnet the permanent magnet has the 2p piece, and the N utmost point and S set up extremely crisscrossly in the outer circumference of pivot, the permanent magnet reinforce the cover suit and be in the excircle of permanent magnet, furthermore, permanent magnet 1 be tile shape structure, external circular arc surfaces, interior arc surface and two side planes have, the side plane card of adjacent permanent magnet closes, the upper left corner and the upper right corner of permanent magnet are opened jaggedly respectively. The utility model discloses an independent magnetizer is not established to the permanent -magnet alternating -current servo motor rotor, through increasing the big rotor shaft diameter, makes the pivot regard as the magnetizer simultaneously. Simultaneously, the cornerite of the interior arc surface of increase permanent magnet can show the increase air gap flux until the cancellation pole clearance.
Description
Technical field
This utility model relates to machine field, especially relates to permanent-magnet alternating current servo motor, specifically a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux.
Background technology
Existing rotor structure of alternating current servo motor, as it is shown in figure 1, include permanent magnet 1, magnetic conductor 2, rotating shaft 4 and permanent magnet rigidized cover 3.Described magnetic conductor 2 excircle has 2p breach, 2p block permanent magnet N pole and S pole to be embedded at alternately in above-mentioned magnetic conductor excircle breach.
With reference to Fig. 2, the structure of permanent magnet is shoe, has exterior arc surface, inner arc surface and two side planes, exterior arc surface and inner arc surface and adopts linear cutter to form.In order to save material, exterior arc surface and inner arc surface being generally designed to identical radius R, thus can connect cutting, therefore the offset distance in two centers of circle is equal to the thickness c of permanent magnet.Shown in figure two side plane is parallel to each other.This structure, cutting is convenient, and will not waste material.Take into account the leakage field at magnetic conductor parting bead 5 place between the top leakage field between adjacent magnet steel and adjacent magnet steel, for reaching maximum air gap magnetic flux, after optimization, obtain the width b1 of the exterior arc surface of permanent magnet.The maximum air gap flux value of this shape permanent magnet, less desirable.
With reference to Fig. 3, improve as one, two centripetal settings of side plane of permanent magnet, the width b2 of the exterior arc surface of permanent magnet increases to some extent, this shape magnet structure, the top leakage field between adjacent permanent magnet increases to some extent, and the leakage field at magnetic conductor parting bead 5 place between adjacent magnet steel does not increase, after obtaining the width b2 of exterior arc surface of permanent magnet after optimization, after optimization, air-gap flux increases to some extent.But increasing degree is also few.
Summary of the invention
To be solved in the utility model is the problem that the permanent magnet air-gap flux that prior art exists is not high, it is desirable to provide a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux.
For solving the problems referred to above, this utility model is by the following technical solutions: a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux, including rotating shaft, permanent magnet and permanent magnet rigidized cover, it is characterized in that described permanent magnet has 2p block, and N pole and S pole are alternately arranged on the excircle of described rotating shaft；Described permanent magnet rigidized cover is sleeved on the cylindrical of described permanent magnet；Further, described permanent magnet 1, in shoe structure, has exterior arc surface, inner arc surface and two side planes, and the side plane note of adjacent permanent magnet closes, and the upper left corner and the upper right corner of described permanent magnet have breach.
Permanent-magnet alternating current servo motor rotor of the present utility model, does not set independent magnetic conductor, by increasing shaft diameter, makes rotating shaft simultaneously as magnetic conductor.Meanwhile, increasing the cornerite of permanent magnet inner arc surface until cancelling pole clearance, air-gap flux can be dramatically increased.
According to this utility model, the plane at the side plane place of described permanent magnet is through the axle center of rotating shaft.
According to this utility model, the width b=0.8-0.9 τ of the exterior arc surface of described permanent magnet, wherein τ is pole span.
According to this utility model, the degree of depth a=0.4-0.6*c of the breach of described permanent magnet, wherein c is the center thickness of permanent magnet.
According to this utility model, described permanent magnet is axisymmetric shape.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of existing permanent-magnet alternating current servo motor rotor.
Fig. 2 is a kind of structural representation of prior art permanent magnet.
Fig. 3 is the another kind of structural representation of prior art permanent magnet.
Fig. 4 be this utility model permanent-magnet alternating current servo motor rotor structural representation.
Fig. 5 is the structural representation of this utility model permanent magnet.
Fig. 6 is each parameter schematic diagram of this utility model permanent magnet.
Detailed description of the invention
With reference to Fig. 4, Fig. 5 and Fig. 6, a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux of the present utility model, including rotating shaft 4, permanent magnet 1 and permanent magnet rigidized cover 3, described permanent magnet 1 has 2p block, and N pole and S pole are alternately arranged on the excircle of described rotating shaft 4；Described permanent magnet rigidized cover 3 is sleeved on the cylindrical of described permanent magnet 1；Further, described permanent magnet 1, in shoe structure, has exterior arc surface 103, inner arc surface 104 and two side planes 101,106, and side plane 101,106 note of adjacent permanent magnet 1 closes, and the upper left corner of described permanent magnet 1 and the upper right corner have breach 102,105.
The plane at side plane 101,106 place of described permanent magnet 1 is through the axle center of rotating shaft 4.The cornerite A of such permanent magnet inner arc surface is 360/2p.
The width b=0.8-0.9 τ of the exterior arc surface of described permanent magnet 1, wherein τ is pole span.
The degree of depth a=0.4-0.6*c of the breach 102,105 of described permanent magnet 1, wherein c is the center thickness of permanent magnet.
Described permanent magnet 1 is axisymmetric shape.
Permanent-magnet alternating current servo motor rotor of the present utility model, does not set independent magnetic conductor, by increasing shaft diameter, makes rotating shaft simultaneously as magnetic conductor.Meanwhile, increase the cornerite of permanent magnet inner arc surface until cancelling pole clearance, and optimize the width b of exterior arc surface, air-gap flux can be dramatically increased.One 200 support motor gas-gap magnetic flux is increased by 4% by magnet structure of the present utility model and the comparison of traditional structure permanent magnet motor.The counter electromotive force of actual measurement motor also increases by 4%.
It is understood that above-described embodiment is simply to explanation of the present utility model, rather than to restriction of the present utility model, any without departing from the utility model creation in this utility model spirit, each fall within protection domain of the present utility model.
Claims (5)
1. the permanent-magnet alternating current servo motor rotor improving air-gap flux, including rotating shaft (4), permanent magnet (1) and permanent magnet rigidized cover (3), it is characterized in that described permanent magnet (1) has 2p block, and N pole and S pole are alternately arranged on the excircle of described rotating shaft (4)；Described permanent magnet rigidized cover (3) is sleeved on the cylindrical of described permanent magnet (1)；And, described permanent magnet (1) is in shoe structure, there are exterior arc surface (103), inner arc surface (104) and two side planes (101,106), side plane (101, the 106) note of adjacent permanent magnet (1) closes, and the upper left corner of described permanent magnet (1) and the upper right corner have breach (102,105).
2. a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux as claimed in claim 1, it is characterised in that the plane at side plane (101, the 106) place of described permanent magnet (1) is through the axle center of rotating shaft (4).
3. a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux as claimed in claim 1, it is characterised in that width b=(0.8-0.9) τ of the exterior arc surface of described permanent magnet (1), wherein τ is pole span.
4. a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux as claimed in claim 1, it is characterized in that degree of depth a=(0.4-0.6) the * c of the breach (102,105) of described permanent magnet (1), wherein c is the center thickness of permanent magnet.
5. a kind of permanent-magnet alternating current servo motor rotor improving air-gap flux as described in claim 1-4 any one, it is characterised in that described permanent magnet (1) is axisymmetric shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620195978.2U CN205377484U (en) | 2016-03-14 | 2016-03-14 | Improve permanent -magnet alternating -current servo motor rotor of air gap flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620195978.2U CN205377484U (en) | 2016-03-14 | 2016-03-14 | Improve permanent -magnet alternating -current servo motor rotor of air gap flux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205377484U true CN205377484U (en) | 2016-07-06 |
Family
ID=56266133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620195978.2U Withdrawn - After Issue CN205377484U (en) | 2016-03-14 | 2016-03-14 | Improve permanent -magnet alternating -current servo motor rotor of air gap flux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205377484U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961175A (en) * | 2017-05-26 | 2017-07-18 | 江西清华泰豪三波电机有限公司 | Magneto outer rotor and the magneto for adjusting magnetic shoe shape |
| CN110112849A (en) * | 2019-05-21 | 2019-08-09 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of step skewed pole formula EPS brushless electric motor rotor |
-
2016
- 2016-03-14 CN CN201620195978.2U patent/CN205377484U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961175A (en) * | 2017-05-26 | 2017-07-18 | 江西清华泰豪三波电机有限公司 | Magneto outer rotor and the magneto for adjusting magnetic shoe shape |
| CN110112849A (en) * | 2019-05-21 | 2019-08-09 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of step skewed pole formula EPS brushless electric motor rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160706 Effective date of abandoning: 20230320 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160706 Effective date of abandoning: 20230320 |