CN205123453U - Magnetic pole is evenly distributed's permanent -magnet machine rotor not - Google Patents
Magnetic pole is evenly distributed's permanent -magnet machine rotor not Download PDFInfo
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- CN205123453U CN205123453U CN201520893493.6U CN201520893493U CN205123453U CN 205123453 U CN205123453 U CN 205123453U CN 201520893493 U CN201520893493 U CN 201520893493U CN 205123453 U CN205123453 U CN 205123453U
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- magnetic pole
- rotor core
- retainer ring
- rotor
- peripheral surface
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Abstract
The utility model provides a magnetic pole is evenly distributed's permanent -magnet machine rotor not, which comprises a rotating shaft, rotor core, 8 the piece magnetic pole, the first end fixed loop, the second end fixed loop and do not have the latitude area, the outside of pivot is located to the rotor core cover, rotor core passes through the key and is connected with the pivot, the magnetic pole splices in rotor core's outer peripheral surface, pivot both ends in about rotor core are overlapped respectively and are equipped with the first end fixed loop, the second end fixed loop, no latitude tape winding is around surperficial in the magnetic pole, rotor core's outer peripheral surface is provided with 3 and follows separating of being parallel to each other with this rotor core's rotation axis, 3 the strip separates along tell the three clearance that is used for arranging the magnetic pole on rotor core's outer peripheral surface, be provided with 3 respectively in this three clearance, 3 individual and 2 magnetic poles. The utility model discloses can reduce the tooth's socket torque, make the vibration noise of motor littleer, move more steadily, have the performance in the aspect of the better back electromotive force harmonic, make motor low -speed superior performance simultaneously, more be favorable to speed, the position control of precision.
Description
Technical field
The utility model relates to a kind of permanent magnet machine rotor, is specifically related to a kind of rotor of servo permanent-magnet synchronous.
Background technology
Cogging torque is the intrinsic phenomenon of magneto, it be armature winding under cold state, the magnetic field produced by permanent magnet with the teeth groove effect of armature core, circumferencial direction produce torque.Due to servo motor stator iron core fluting, when the rotor is turning, the magnetic resistance in magnetic circuit changes, and will produce cogging torque.Its generation comes from the tangential force between permanent magnet and armature tooth, makes the rotor of magneto have a kind of trend of aliging with stator along a certain specific direction, attempts by rotor fixed position in some position, and cogging torque is a kind of oscillating torque of trend generation thus.
But cogging torque can make motor torque fluctuate, and occurs the fluctuation of speed, make motor can not even running, affect the performance of motor, produce vibration and noise simultaneously.In variable speed drives, when the mechanical frequency of torque pulsation frequency and stator or rotor is consistent, the vibration that cogging torque produces and noise will be exaggerated.The existence of cogging torque have impact on the low-speed performance of motor in speed control system and the hi-Fix in position control system equally.
Therefore, how reducing cogging torque is the technical problem needing solution in Design of PM Motor manufacture process badly.
Summary of the invention
The purpose of this utility model is the deficiency existed to overcome prior art, and provide a kind of permanent magnet machine rotor of magnetic pole uneven distribution, this permanent magnet machine rotor has less cogging torque, can obtain more excellent motor performance.
The utility model is achieved through the following technical solutions: a kind of permanent magnet machine rotor of magnetic pole uneven distribution, comprise rotating shaft, rotor core, 8 pieces of magnetic poles, first end retainer ring, the second end retainer ring and without latitude band, described rotor core is sheathed on the outside of described rotating shaft, described rotor core is connected with described rotating shaft by key, described magnetic pole glueds joint the external peripheral surface in described rotor core, described rotating shaft is arranged with described first end retainer ring respectively in the two ends, left and right of described rotor core, described the second end retainer ring, describedly be wound in described magnetic pole surfaces without latitude band, the external peripheral surface of described rotor core be provided with 3 with the rotation of this rotor core be parallel to each other every edge, article 3, on the external peripheral surface of rotor core, separate three for arranging the gap of magnetic pole every edge, 3 are respectively arranged with in these three gaps, 3 and 2 magnetic poles.
The centerlines of adjacent two magnetic poles in each described gap is 42o, with described in every bar every being 50o along the centerlines of adjacent two magnetic poles in left and right.
Described magnetic pole is a watt shape magnetic pole, and the inner arc of magnetic pole, the radian of outer arc are R54, relative to the inner arc of magnetic pole, and the thickness of the eccentric magnetic pole of outer arc of magnetic pole.
Described first end retainer ring, described the second end retainer ring are provided with clay groove, are provided with balance clay in clay groove.
The beneficial effects of the utility model are: cogging torque can be reduced in rational scope by the utility model, make the vibrating noise of motor less, run more steady, there is the performance of better back electromotive force harmonic wave aspect, make motor low-speed performance superior simultaneously, be more conducive to the speed of precision, Position Control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is magnetic pole distribution map of the present utility model;
Fig. 3 is the structural representation of magnetic pole.
In the drawings: 1-rotating shaft; 2-first end retainer ring; 3-key; 4-rotor core; 5-magnetic pole; 6-is without latitude band; 7-balances clay; 8-the second end retainer ring; 9-is every edge.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As Fig. 1, shown in Fig. 2, a kind of permanent magnet machine rotor of magnetic pole uneven distribution, comprise rotating shaft 1, rotor core 4, 8 pieces of magnetic poles 5, first end retainer ring 2, the second end retainer ring 8 and without latitude band 6, rotor core 4 is sheathed on the outside of rotating shaft 1, rotor core 4 is connected with rotating shaft 1 by key 3, magnetic pole 5 glueds joint the external peripheral surface in rotor core 4, rotating shaft 1 is arranged with first end retainer ring 2 respectively in the two ends, left and right of rotor core 4, the second end retainer ring 8, magnetic pole 5 surface is wound in without latitude band 6, the external peripheral surface of rotor core 4 be provided with 3 with the rotation of this rotor core 4 be parallel to each other every along 9, article 3, every separating three for arranging the gap of magnetic pole 5 on the external peripheral surface of rotor core 4 along 9, 3 are respectively arranged with in these three gaps, 3 and 2 magnetic poles 5.
As shown in Figure 2,8 magnetic poles 5 are arranged in the external peripheral surface of rotor core 4 in the mode of uneven distribution, adopt the peculiar mode of 3,3,2 to arrange.Wherein, the centerlines of adjacent two magnetic poles 5 in each gap is 42o, with every bar every being 50o along the centerlines of 9 adjacent two magnetic poles 5 in left and right, see Fig. 2, the angle of the center line of two pieces of namely often adjacent magnetic poles 5 is 50o, 42o, 42o, 50o, 42o, 50o, 42o, 42o successively.By such magnetic pole 5 distribution mode, make the cogging torque of motor be reduced in rational scope, motor low-speed performance is superior, is more conducive to the speed of precision, Position Control.
As shown in Figure 3, magnetic pole 5 is a watt shape magnetic pole, and the inner arc of magnetic pole 5, the radian of outer arc are R54, relative to the inner arc of magnetic pole 5, the thickness of the eccentric magnetic pole 5 of outer arc of magnetic pole 5, magnetic pole 5 adopts this structure to be conducive to reducing the cogging torque of motor equally, is conducive to the servo performance improving motor.
During installation, installed to by key 3 in the keyway of rotating shaft 1, the keyway of rotating shaft 1 plays the effect of location rotor core 4, and key 3 plays the effect of transmitting force, rotor core 4 is installed in rotating shaft 1 by the mode of interference fit.Coating the glue of high strength at the external peripheral surface of rotor core 4, be pasted in rotor core 4 by 8 magnetic poles 5, is had good positioning by rotor core 4 in the position of 8 pieces of magnetic poles 5.After magnetic pole 5 has been pasted, then first end retainer ring 2, the second end retainer ring 8 are installed by the mode of hot jacket respectively in the two ends, left and right of rotor core 4.By magnetic pole 5 surface will be wrapped in without latitude band 6 without latitude band wrapping machine, want consolidation without latitude band 6 winding, evenly, surface will be without projection, and the highest superposition number of plies is two-layer.Dynamic balancing machine does dynamic balancing effect core to whole rotor, and dynamic balancing is not passed through, and is provided with balance clay 7 in the clay groove of first end retainer ring 2, the second end retainer ring 8, adjusts, finally make whole rotor reach balance requirement with balance clay 7.
Finally should be noted that; above content is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection range; the simple modification that those of ordinary skill in the art carries out the technical solution of the utility model or equivalently to replace, does not all depart from essence and the scope of technical solutions of the utility model.
Claims (4)
1. the permanent magnet machine rotor of a magnetic pole uneven distribution, comprise rotating shaft, rotor core, 8 pieces of magnetic poles, first end retainer ring, the second end retainer ring and without latitude band, described rotor core is sheathed on the outside of described rotating shaft, described rotor core is connected with described rotating shaft by key, described magnetic pole glueds joint the external peripheral surface in described rotor core, described rotating shaft is arranged with described first end retainer ring respectively in the two ends, left and right of described rotor core, described the second end retainer ring, describedly be wound in described magnetic pole surfaces without latitude band, it is characterized in that: the external peripheral surface of described rotor core be provided with 3 with the rotation of this rotor core be parallel to each other every edge, article 3, on the external peripheral surface of rotor core, separate three for arranging the gap of magnetic pole every edge, 3 are respectively arranged with in these three gaps, 3 and 2 magnetic poles.
2. the permanent magnet machine rotor of magnetic pole uneven distribution according to claim 1, is characterized in that: the centerlines of adjacent two magnetic poles in each described gap is 42o, with described in every bar every being 50o along the centerlines of adjacent two magnetic poles in left and right.
3. the permanent magnet machine rotor of magnetic pole uneven distribution according to claim 2, is characterized in that: described magnetic pole is watt shape magnetic pole, the inner arc of magnetic pole, the radian of outer arc are R54, relative to the inner arc of magnetic pole, and the thickness of the eccentric magnetic pole of outer arc of magnetic pole.
4. the permanent magnet machine rotor of magnetic pole uneven distribution according to claim 1, is characterized in that: described first end retainer ring, described the second end retainer ring are provided with clay groove, are provided with balance clay in clay groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520893493.6U CN205123453U (en) | 2015-11-11 | 2015-11-11 | Magnetic pole is evenly distributed's permanent -magnet machine rotor not |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520893493.6U CN205123453U (en) | 2015-11-11 | 2015-11-11 | Magnetic pole is evenly distributed's permanent -magnet machine rotor not |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205123453U true CN205123453U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520893493.6U Active CN205123453U (en) | 2015-11-11 | 2015-11-11 | Magnetic pole is evenly distributed's permanent -magnet machine rotor not |
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| Country | Link |
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| CN (1) | CN205123453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262259A (en) * | 2015-11-11 | 2016-01-20 | 上海翡叶动力科技有限公司 | Permanent magnet motor rotor with nonuniform-distribution magnetic poles |
-
2015
- 2015-11-11 CN CN201520893493.6U patent/CN205123453U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262259A (en) * | 2015-11-11 | 2016-01-20 | 上海翡叶动力科技有限公司 | Permanent magnet motor rotor with nonuniform-distribution magnetic poles |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |