CN105262259A - Permanent magnet motor rotor with nonuniform-distribution magnetic poles - Google Patents
Permanent magnet motor rotor with nonuniform-distribution magnetic poles Download PDFInfo
- Publication number
- CN105262259A CN105262259A CN201510763626.2A CN201510763626A CN105262259A CN 105262259 A CN105262259 A CN 105262259A CN 201510763626 A CN201510763626 A CN 201510763626A CN 105262259 A CN105262259 A CN 105262259A
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- magnetic pole
- magnetic poles
- rotating shaft
- iron core
- rotor core
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- 238000009828 non-uniform distribution Methods 0.000 title abstract 2
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A permanent magnet motor rotor with nonuniform-distribution magnetic poles comprises a rotating shaft, a rotor iron core, 8 magnetic poles, a first end portion fixing ring, a second end portion fixing ring and a weftless band. The rotor iron core sleeves an outer side of the rotating shaft and the rotor iron core is connected to the rotating shaft through a key. The magnetic poles are cemented to an outer circumference surface of the rotor iron core. The first end portion fixing ring and the second end portion fixing ring sleeve left and right ends of the rotating shaft relative to the rotor iron core respectively. The weftless band winds a surface of the magnetic poles. The outer circumference surface of the rotor iron core is provided with three separation edges which are mutually parallel to a rotation axis of the rotor iron core. The three separation edges divide three gaps used for arranging the magnetic poles on the outer circumference surface of the rotor iron core. Three magnetic poles, three magnetic poles and two magnetic poles are arranged in the three gaps respectively. By using the motor rotor of the invention, a torque of a tooth groove can be reduced so that a vibration noise of the motor is small and operation is stable. Good performance on a counter electromotive force harmonic aspect is possessed. Simultaneously, low speed performance of the motor is superior, which is good for accurate speed and position control.
Description
Technical field
The present invention relates to a kind of permanent magnet machine rotor, be 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 object of the invention is the deficiency existed to overcome prior art, 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 present invention is achieved by 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 invention has the beneficial effects as follows: cogging torque can be reduced in rational scope by the present invention, 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 invention;
Fig. 2 is magnetic pole distribution map of the present invention;
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 present invention 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 technical scheme of the present invention; but not limiting the scope of the invention; the simple modification that those of ordinary skill in the art carries out technical scheme of the present invention or equivalently to replace, does not all depart from essence and the scope of technical solution of the present invention.
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 |
|---|---|---|---|
| CN201510763626.2A CN105262259A (en) | 2015-11-11 | 2015-11-11 | Permanent magnet motor rotor with nonuniform-distribution magnetic poles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763626.2A CN105262259A (en) | 2015-11-11 | 2015-11-11 | Permanent magnet motor rotor with nonuniform-distribution magnetic poles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105262259A true CN105262259A (en) | 2016-01-20 |
Family
ID=55101810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510763626.2A Pending CN105262259A (en) | 2015-11-11 | 2015-11-11 | Permanent magnet motor rotor with nonuniform-distribution magnetic poles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105262259A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743245A (en) * | 2016-04-08 | 2016-07-06 | 上海翡叶动力科技有限公司 | Low-speed direct-driven servo permanent-magnet motor stator/rotor |
| CN106936273A (en) * | 2017-05-12 | 2017-07-07 | 温岭市九洲电机制造有限公司 | A kind of technique for fixing of surface-mounted permanent magnet machine rotor magnetic steel |
| CN108923609A (en) * | 2018-08-01 | 2018-11-30 | 深圳市宝丽洁科技有限公司 | A kind of vibration motor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0823664A (en) * | 1994-05-02 | 1996-01-23 | Aisin Aw Co Ltd | Motor |
| US20050023927A1 (en) * | 2001-02-14 | 2005-02-03 | Koyo Seiko Co., Ltd. | Brushless DC motor and method of manufacturing brushless DC motor |
| US20060202579A1 (en) * | 2003-01-30 | 2006-09-14 | Ingo Hahn | Polyphase motor with optimised running characteristics |
| US20110001382A1 (en) * | 2008-11-11 | 2011-01-06 | Ford Global Technologies, Llc | Permanent Magnet Machine with Offset Pole Spacing |
| CN201937359U (en) * | 2011-02-28 | 2011-08-17 | 中山大洋电机制造有限公司 | A rotor assembly |
| CN202111544U (en) * | 2011-06-24 | 2012-01-11 | 宁波市北仑恒峰电机制造有限公司 | Rotor of permanent magnet synchronous motor |
| CN202949340U (en) * | 2012-12-14 | 2013-05-22 | 湖南华一电机制造有限公司 | Inclined magnetic brushless DC motor |
| CN203722361U (en) * | 2014-02-26 | 2014-07-16 | 上海翡叶动力科技有限公司 | Surface-mounted permanent-magnet servo motor |
| CN204681182U (en) * | 2015-05-18 | 2015-09-30 | 上海翡叶动力科技有限公司 | A kind of Novel servo permanent-magnetic synchronous motor rotor |
| CN205123453U (en) * | 2015-11-11 | 2016-03-30 | 上海翡叶动力科技有限公司 | Magnetic pole is evenly distributed's permanent -magnet machine rotor not |
-
2015
- 2015-11-11 CN CN201510763626.2A patent/CN105262259A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0823664A (en) * | 1994-05-02 | 1996-01-23 | Aisin Aw Co Ltd | Motor |
| US20050023927A1 (en) * | 2001-02-14 | 2005-02-03 | Koyo Seiko Co., Ltd. | Brushless DC motor and method of manufacturing brushless DC motor |
| US20060202579A1 (en) * | 2003-01-30 | 2006-09-14 | Ingo Hahn | Polyphase motor with optimised running characteristics |
| US20110001382A1 (en) * | 2008-11-11 | 2011-01-06 | Ford Global Technologies, Llc | Permanent Magnet Machine with Offset Pole Spacing |
| CN201937359U (en) * | 2011-02-28 | 2011-08-17 | 中山大洋电机制造有限公司 | A rotor assembly |
| CN202111544U (en) * | 2011-06-24 | 2012-01-11 | 宁波市北仑恒峰电机制造有限公司 | Rotor of permanent magnet synchronous motor |
| CN202949340U (en) * | 2012-12-14 | 2013-05-22 | 湖南华一电机制造有限公司 | Inclined magnetic brushless DC motor |
| CN203722361U (en) * | 2014-02-26 | 2014-07-16 | 上海翡叶动力科技有限公司 | Surface-mounted permanent-magnet servo motor |
| CN204681182U (en) * | 2015-05-18 | 2015-09-30 | 上海翡叶动力科技有限公司 | A kind of Novel servo permanent-magnetic synchronous motor rotor |
| CN205123453U (en) * | 2015-11-11 | 2016-03-30 | 上海翡叶动力科技有限公司 | Magnetic pole is evenly distributed's permanent -magnet machine rotor not |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743245A (en) * | 2016-04-08 | 2016-07-06 | 上海翡叶动力科技有限公司 | Low-speed direct-driven servo permanent-magnet motor stator/rotor |
| CN106936273A (en) * | 2017-05-12 | 2017-07-07 | 温岭市九洲电机制造有限公司 | A kind of technique for fixing of surface-mounted permanent magnet machine rotor magnetic steel |
| CN108923609A (en) * | 2018-08-01 | 2018-11-30 | 深圳市宝丽洁科技有限公司 | A kind of vibration motor |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |