CN201044379Y - Novel rotor core punching piece and correspond permanent magnet for permanent magnetism synchronous servo - Google Patents
Novel rotor core punching piece and correspond permanent magnet for permanent magnetism synchronous servo Download PDFInfo
- Publication number
- CN201044379Y CN201044379Y CNU2007200519856U CN200720051985U CN201044379Y CN 201044379 Y CN201044379 Y CN 201044379Y CN U2007200519856 U CNU2007200519856 U CN U2007200519856U CN 200720051985 U CN200720051985 U CN 200720051985U CN 201044379 Y CN201044379 Y CN 201044379Y
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- permanent magnet
- rotor core
- utility
- model
- synchronous servo
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Abstract
The utility model relates to a novel rotor core punching sheet for a permanent magnet synchronous servo motor and relative permanent magnets. The utility model aims to provide a novel rotor core punching sheet for a permanent magnet synchronous servo motor and relative permanent magnets of convenient processing and low rotor surface consumption to solve technical problem. Therefore, the novel rotor core punching sheet for a permanent magnet synchronous motor comprises a round punching sheet, which is provided with a plurality of grooves, which are uniformly distributed around circumference along a direction of tangent. The utility model is characterized in that: a narrow edge between a periphery of the grooves and a periphery of the round punching sheet is provided with two arc and narrow sides and a wider center. As optimization, two sides of the periphery of each groove assume an arc shape, while the center assumes a linear shape. The utility model also provides a permanent magnet matching with the rotor core punching sheet of the utility model. The utility model has the advantages of convenient processing and low surface loss of rotor core, and can be widely applied to various permanent magnet synchronous servo motors.
Description
Technical field
The utility model relates to a kind of permanent synchronous servo motor novel rotor iron-core lamination and corresponding permanent magnet.
Background technology
The Modern Digital AC servo generally adopts permanent magnet synchronous motor, and rotor magnetic pole is multipole high-performance rare-earth permanent magnet material, and traditional structure is surperficial adhesive type, as shown in Figure 1.In order to prevent that motor when rotation permanent magnet from flying out under centrifugal action, permanent magnet surfaces adds the non-magnet material protection, promptly there are not the whipping of latitude glass tape, stainless steel sleeve or special plastic cover with epoxy, new embedded permanent magnet rotor structure, permanent magnet is to be inserted in the good groove of the pre-subpunch of rotor core.The advantage of embedded rotor structure is to reduce the rotor surface loss, can increase the ability of the anti-high speed centrifugation power of rotor, the more important thing is to reduce the teeth groove location torque effectively.
Groove in the rotor core is good more near rotor excircle effect more in theory, and the narrow limit between the outer of groove outer and circular punching will be narrow like this.But be too narrow to a certain degree (as less than punching thickness) when narrow limit, just bring very big difficulty, damage pressing equipment easily, distortion even fracture appear in narrow limit easily for rotor-core lamination die-cut.
Therefore, the permanent magnet of existing embedded rotor structure mostly is trapezoidal greatly, as shown in Figure 1.Leave considerable core portion between each permanent magnet pole top and the air gap, hand over axle magnetic field for armature path is provided, make quadrature axis synchronous reactance increase, the value that makes it is much larger than direct-axis synchronous reactance, rather than image surface adhesive type rotor is such, and the ac-dc axis synchronous reactance is equal substantially, and quadrature axis synchronous reactance increases makes the overload capacity of motor descend, or make the moment coefficient of motor reduce, thereby disadvantageous consequence such as electric current increase.
The utility model content
The technical problems to be solved in the utility model is the above-mentioned defective that how to overcome prior art, and the permanent synchronous servo motor that provide a kind of and be convenient to process, the rotor surface loss is low is with novel rotor iron-core lamination and corresponding permanent magnet.
For solving the problems of the technologies described above, this permanent synchronous servo motor novel rotor iron-core lamination, comprise circular punching, this circle punching is provided with a plurality of grooves, above-mentioned groove tangentially evenly distributes around circumference, it is characterized in that: the both sides, narrow limit between the outer of described groove and the outer of circular punching are circular arc, narrower, wide middle.So design is during use, as described in Figure 3, the both sides core portion of the magnetic loop process of permanent magnet and stator winding magnetic pole is thinner, and the rotor surface loss is little, and the chain-wales of permanent magnet crown center makes corresponding outer rim core portion broad, die-cut convenience, and narrow limit is difficult for distortion, fracture.
As optimization, the both sides part of each groove outer is circular arc, and mid portion is shape linearly.So design, during use, permanent magnet pole is arc surface substantially over against the one side of air gap, and is concentric with the rotor core cylindrical, and the core portion between the rotor cylindrical is only stayed the minimum widith that allows on the technology.The middle part of permanent magnet arc surface is a platform, improved the manufacturability of rotor punching and punch die thereof, and the position of platform is chosen in the pole center part, can not cause that armature magnetic cross flux amount (magnetic conductance) obviously increases.
A kind of novel rotor iron-core lamination permanent magnet, the shape of this permanent magnet matches with the groove shape of described novel rotor iron-core lamination.So design could be worked good with this novel rotor iron-core lamination.
The utility model is at the deficiency of the embedded rotor structure of standard, allow the core portion of staying between every permanent magnet pole top and the air gap lack as best one can, reduce as far as possible and add the magnetic conductance that armature is handed over the axle magnetic circuit, make under the whole situations about keeping of the advantage of embedded rotor structure, overcome the shortcoming that quadrature axis synchronous reactance too strengthens, improved the running performance index of motor, have be convenient to process, advantage that the rotor core surface loss is little, be widely used in various permanent synchronous servo motors.
Description of drawings
Fig. 1 is existing surperficial permanent magnet rotor structural representation;
Fig. 2 is existing embedded rotor structure and friendship armature axis flux path schematic diagram;
Fig. 3 is this permanent synchronous servo motor novel rotor iron-core lamination structural representation;
Fig. 4 is the permanent synchronous servo motor structural representation that contains this novel rotor iron-core lamination.
Among the figure: 1 be circular punching, 2 for groove, 3 for the narrow limit between the outer of the outer of groove 2 and circular punching 1,4 for the both sides part of groove 2 outers, 5 for the mid portion of groove 2 outers, 6 for permanent magnet, 7 for fore bearing, 8 for front end housing, 9 for stator, 10 for rotor, 11 for rear end cap, 12 for rear bearing, 13 for lead-out wire pressing plate, 14 be that the magnetic line of force, 17 is that rotor core, 18 is stator core for encoder cover, 15 is encoder, 16.
Embodiment
Below in conjunction with accompanying drawing the utility model permanent synchronous servo motor is described further with novel rotor iron-core lamination and corresponding permanent magnet:
Execution mode one: as shown in Figure 3, this permanent synchronous servo motor comprises circular punching 1 with the novel rotor iron-core lamination, this circle punching 1 is provided with a plurality of groove 2, above-mentioned groove 2 tangentially evenly distributes around the circumference of circular punching 1, it is characterized in that: 3 both sides, narrow limit between the outer of the outer of described groove 2 and circular punching 1 are circular arc, narrower, wide middle.The both sides part 4 of each groove 2 outer is circular arc, and mid portion 5 is shape linearly.As shown in Figure 4: the shape of the permanent magnet 6 that cooperates with above-mentioned novel rotor iron-core lamination matches with the shape of groove 2.
Claims (3)
1. permanent synchronous servo motor novel rotor iron-core lamination, comprise circular punching, this circle punching is provided with a plurality of grooves, above-mentioned groove tangentially evenly distributes around circumference, it is characterized in that: the both sides, narrow limit between the outer of described groove and the outer of circular punching are circular arc, narrower, wide middle.
2. permanent synchronous servo motor novel rotor iron-core lamination according to claim 1 is characterized in that: the both sides part of each groove outer is circular arc, and mid portion is shape linearly.
3. claim 1 or 2 described novel rotor iron-core lamination permanent magnets, it is characterized in that: the shape of this permanent magnet matches with the groove shape of described novel rotor iron-core lamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200519856U CN201044379Y (en) | 2007-05-29 | 2007-05-29 | Novel rotor core punching piece and correspond permanent magnet for permanent magnetism synchronous servo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200519856U CN201044379Y (en) | 2007-05-29 | 2007-05-29 | Novel rotor core punching piece and correspond permanent magnet for permanent magnetism synchronous servo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201044379Y true CN201044379Y (en) | 2008-04-02 |
Family
ID=39259269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200519856U Expired - Lifetime CN201044379Y (en) | 2007-05-29 | 2007-05-29 | Novel rotor core punching piece and correspond permanent magnet for permanent magnetism synchronous servo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201044379Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044944A (en) * | 2009-10-21 | 2011-05-04 | 富士电机系统株式会社 | Permanent magnet rotary motor |
-
2007
- 2007-05-29 CN CNU2007200519856U patent/CN201044379Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044944A (en) * | 2009-10-21 | 2011-05-04 | 富士电机系统株式会社 | Permanent magnet rotary motor |
| CN102044944B (en) * | 2009-10-21 | 2015-02-18 | 富士电机株式会社 | Permanent magnet rotary motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080402 |