CN201975969U - Three-phase permanent magnet servo motor - Google Patents
Three-phase permanent magnet servo motor Download PDFInfo
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- CN201975969U CN201975969U CN2011200619367U CN201120061936U CN201975969U CN 201975969 U CN201975969 U CN 201975969U CN 2011200619367 U CN2011200619367 U CN 2011200619367U CN 201120061936 U CN201120061936 U CN 201120061936U CN 201975969 U CN201975969 U CN 201975969U
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Abstract
The utility model relates to a three-phase permanent magnet servo motor which solves the problems on performance and process due to different sizes of two teeth with windings in the traditional motor of the same kind. The number of magnetic poles 2P of a rotor in the motor is equal to 16, the number of tooth slots Z of a stator is equal to 24, and the motor comprises twelve large teeth (8), six small teeth (9) and six smaller tiny teeth (10); twelve concentrated windings are respectively arranged on the twelve large teeth, and the small teeth, the large teeth with the windings, and the tiny teeth and the large teeth with the windings are sequentially and circularly arranged; and the circumferential mechanical angles of each large teeth, each small teeth and each tiny teeth are respectively 22.5 degrees+/-2.5 degrees, 10 degrees+/-2.5 degrees and 5 degrees+/-2.5 degrees. The motor can be driven by three-phase rectangular-wave current or three-phase sine-wave current and has the advantages of small winding ends, low copper consumption, small loss, air gap and positioning torque, strong overloading capacity and the like.
Description
Technical field
The utility model relates to permanent magnet motor, more particularly, relates to a kind of three-phase permanent servomotor, and this motor is applicable to that direct driving and position, speed SERVO CONTROL use.
Background technology
The permanent magnet direct current motor that the utility model is related mainly is meant to produce the servomotor with low torque ripple effectively.Wherein, torque ripple mainly comprises: lower slot effect torque component (location torque), lower electric current and electromotive force harmonic torque component.At present, the main target of this type of servo motor design is: torque fluctuations is little, power output is big (product of rotating speed and moment is big), overload capacity is big, volume is little, price is low or the like.
The main cause that produces torque fluctuations comprises: the torque fluctuations that (1) stator current harmonic wave and back-emf harmonic products present; Rotor rotation when (2) stator current is zero changes the location torque fluctuation that presents because slot effect produces magnetic conductance.
The main method that suppresses torque fluctuations comprises: the fractional slot winding design that (1) is traditional; (2) optimize the concentrated design of Windings that teeth groove cooperates with magnetic pole, for example " highly efficient permanent magnet brushless motor " by name, the Chinese utility application of publication number CN1856921A.Wherein, traditional fractional slot winding designed motor manufacturing process complexity, production cost are very high.Optimize the concentrated design of Windings that teeth groove cooperates with magnetic pole and have the high characteristics of cost performance, but it is adapted to number of magnetic poles greater than 20 low speed servo motor.
At publication number is in the Chinese utility application of CN101371425A, discloses a kind of number of magnetic poles 2P=16, and teeth groove is counted Z=24, adopts the square wave three-phase brushless permanent magnet direct current motor of large, medium and small toothing.This motor possesses excellent performance, has very high cost performance, but still is weak.Because it is equipped with the varying in size of two teeth of winding, brings many inconvenience to manufacturing, for example, the processing mold of tooth, frock, technology all can not be consistent, and the processing mold of winding, frock, technology can not be consistent; More seriously: because the bulk difference of groove, must cause the number of turn of two windings of every phase, the line footpath can not be consistent, thereby motor performance is caused harmful effect, the moment that for example causes the electric current of two windings to produce is asymmetric in the space.The large, medium and small toothing of this motor is strong inadequately for the inhibitory action of location torque in addition.The electrical degree of two teeth of every phase of this motor is: 200 ° ± 20 ° and 160 ° ± 20 °, its opposite potential waveform has the flat-top district more than 120 °, can realize the square wave permanent magnetic servomotor.Yet in order to obtain the highest winding utilization and the wideest flat-top district, the desired electrical angle should be 180 °, this motor departs from desired electrical angle ± 20 °, must cause its winding utilization to drop to sin (140 °/180 ° * 90 °)=0.940, and therefore the opposite potential flat-top district of this motor is not the best yet.
The utility model content
The utility model will solve existing sine wave permanent magnet servomotor and the existing problem of square wave permanent magnetic servomotor, proposes the three-phase permanent servomotor of a kind of new principle, new construction, high-performance, high performance-price ratio.
For solving the problems of the technologies described above, the utility model provides a kind of three-phase permanent servomotor, is equipped with manyly to permanent magnet on the rotor core of described motor, and three phase windings are housed in the teeth groove of stator, wherein,
Number of magnetic poles 2P=16 on the described rotor core; The groove of described stator core is counted Z=24, and 24 teeth should be arranged mutually, and the width of rebate of described groove is 0.1～3.0mm; Comprise 12 canine tooths, six little teeth and six littler little teeth in described 24 teeth;
Described three phase windings are 12 concentrated windings, be loaded on described 12 canine tooths the ordering of described winding and tooth respectively: the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding;
Each canine tooth on the described stator core accounts for 22.5 ° ± 2.5 ° mechanical angles of circumference, promptly 180 ° ± 20 ° electrical degrees; Each little tooth accounts for 10 ° ± 2.5 ° mechanical angles of circumference, promptly 80 ° ± 20 ° electrical degrees; Each little tooth accounts for 5 ° ± 2.5 ° mechanical angles of circumference, promptly 40 ° ± 20 ° electrical degrees; Wherein the shared circumference mechanical angle of each tooth comprises the width of a described notch, and wherein four canine tooths, two little teeth, the mechanical angle sum of adding two little teeth equal 120 °.
In the utility model, on the described rotor core N of each permanent magnet, S magnetic pole alternately, described permanent magnet can be the tile-shaped magnet steel of radial magnetizing or the tile-shaped magnet steel of parallel magnetization.The cylindrical both sides of described tile-shaped magnet steel preferably are provided with angle and are not more than the top rake that 7.5 °, length are not more than the cylindrical arc length 1/4 of magnet steel.Physics air gap between described stator and the rotor can be 0.5～4mm.
In the preferred version of the present utility model, described stator core is made up of 13 parts, comprise contain six little teeth and six little teeth repeatedly press the integral type annular core that forms by the multilayer silicon steel sheet from riveting, repeatedly press form 12 independently canine tooth iron cores by the multilayer silicon steel sheet from riveting; Be respectively equipped with groove/boss on the yoke portion of described annular core and the canine tooth iron core, and the complete stator core of engaged formation.
In another preferred version of the present utility model, described stator core also is made up of 13 parts, comprise contain 12 canine tooths repeatedly press the integral type annular core that forms by the multilayer silicon steel sheet from riveting, repeatedly press six independently little tooth iron cores forming and repeatedly press six independently little tooth iron cores that form from riveting from riveting by the multilayer silicon steel sheet by the multilayer silicon steel sheet; Be respectively equipped with groove/boss on the yoke portion of described annular core and little tooth, the little tooth iron core, and the complete stator core of engaged formation.
In another preferred version of the present utility model, described stator core is made up of 24 parts, promptly comprises by the multilayer silicon steel sheet repeatedly pressing 12 independent canine tooths, six little teeth of independence and six the little teeth of independence that form from riveting; The yoke portion both sides of each tooth are provided with groove/boss, the complete stator core of the engaged formation of yoke portion of adjacent teeth.
As shown from the above technical solution, the number of magnetic poles of three-phase permanent servomotor of the present utility model is 2P=16, the canine tooth that winding is housed accounts for 180 ° of electrical degrees, make its opposite potential waveform have the flat-top district of nearly 135 ° of electrical degrees, and the facewidth is not easy to be subjected to armature reaction to influence greatly, makes motor have stronger overload capacity; Two kinds of non-homogeneous little teeth are exclusively used in the inhibition location torque, make location torque be decreased to ten thousand/level.This motor is every to have only two concentrated windings mutually, and two concentrated winding constructions and the number of turn are identical, make simple, technology is consistent, production cost is very low.Exerting oneself of this motor is bigger by 30% than traditional sine wave permanent magnet servomotor, and winding overhang is littler more than 3 times than traditional sine wave permanent magnet servomotor, so copper loss reduces significantly.When this three-phase permanent servomotor adopts the three-phase square wave current drives, can produce moment stably, its torque fluctuations index is suitable with the sine wave permanent magnet servomotor.Series of advantages such as this three-phase permanent servomotor has that winding overhang is little, few with copper, loss is little, the little magnetic loading height of air gap, location torque is little and overload capacity is strong.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the stator and rotor structural representation of motor in preferred embodiment of the utility model;
Fig. 2 is a motor general assembly structural representation in preferred embodiment of the utility model;
Fig. 3 is the stator tooth angle of the v-groove distribution schematic diagram in embodiment illustrated in fig. 1;
Fig. 4 inlays the structural representation that canine tooth constitutes stator punching;
Fig. 5 is a structural representation of inlaying little tooth and little tooth formation stator punching;
Fig. 6 is the independent respectively and engaged structural representations of 24 teeth;
Fig. 7 is the rotor structure schematic diagram of sine wave magnetic field motor.
Embodiment
A preferred embodiment of the present utility model as depicted in figs. 1 and 2.The general configuration of as can be seen from Figure 2 this three-phase permanent servomotor, its critical piece comprise rotor 1, stator 2, rotating shaft 30 etc., and the physics air gap 5 between rotor 1 and the stator 2 is 0.5～4mm.Rotor-position sensor 6 can be any in photoelectric encoder, resolver, the magnetic coder.
As can be seen from Figure 1, the permanent magnet 4 of eight pairs of utmost points is housed on rotor core, these permanent magnets N, S alternately, the number of magnetic poles 2P=16 of rotor.During concrete enforcement, permanent magnet 4 can be the tile-shaped magnet steel of radial magnetizing or the tile-shaped magnet steel of parallel magnetization.The physical size of the pole span π D/8 of the permanent magnet on the rotor core is 50～200mm, and wherein D is a rotor diameter.This structure can obtain to be tending towards the opposite potential waveform of 135 ° of square waves, cooperates the square wave permanent magnetic servomotor operation that can realize that torque fluctuations is very little with the square wave stator current.Because 3,6 subharmonic phase places in the two opposite potential square waves are identical, be kept to zero mutually, therefore the line counter potential waveform of this structure still is tending towards sinusoidal wave, the product of 3,6 subharmonic when adopting sine-wave current to drive in three-phase sine-wave stator current and the three-phase opposite potential square wave does not present torque fluctuations, and the power output of motor obtains about 30% lifting.
As can be seen from Figure 1, the number Z=24 of stator teeth groove is promptly to having 24 teeth and 12 grooves; The width of the notch 3 of stator slot is 0.1～3mm; Comprise the canine tooth 8 of 12 dress windings, six little teeth 10 not adorning six little teeth 9 of winding and do not adorn winding in 24 teeth, and in circumference, arrange by little tooth → canine tooth → little tooth → canine tooth → little tooth → canine tooth → little tooth → canine tooth → little tooth → canine tooth → such order of little tooth → canine tooth, also promptly form 12 grooves.Wherein, three phase windings only are installed on 12 canine tooths 8, the winding on each canine tooth has two winding limits, and occupies a groove of its both sides respectively.
As shown in Figure 3, each canine tooth on the stator core accounts for 22.5 ° of mechanical angles of circumference, i.e. 180 ° of electrical degrees; Each little tooth accounts for 10 ° of mechanical angles of circumference, i.e. 80 ° of electrical degrees; Each little tooth accounts for 5 ° of mechanical angles of circumference, i.e. 40 ° of electrical degrees; In order to obtain three-phase symmetric winding, four canine tooths, two little teeth, add 4 * 22.5 °+2 * 10 °+2 * 5 °=120 ° of the mechanical angle sums of two little teeth.Wherein the shared circumference mechanical angle of each tooth comprises the width of a notch 3,10 ° of shared circumference mechanical angles of little tooth for example shown in Figure 3 are exactly the shared circumference mechanical angle of width of each half notch about the width of a little tooth adds again, and the width of the notch in the present embodiment (3) is 1.0mm.
This motor has the optimal canine tooth facewidth, electrical degree is P * 22.5 °=4 * 22.5 °=180 °, therefore the winding utilization maximum of this motor turns to sin (180 °/180 ° * 90 °)=1.0, and the opposite potential flat-top district of this embodiment is corresponding to reach best.This uneven teeth groove structure had both guaranteed that three is symmetrical, had suppressed location torque again.
In the present embodiment, 12 three phase windings are for concentrating winding, respectively that stator winding is direct on the canine tooth of handling through surface insulation with coil winding machine or craft, the ordering of winding and tooth is: the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding; Specifically as shown in Figure 1.
So after the coiling, connect between two concentrated windings of every phase, reduced wiring, simplified technology.As seen, the every phase of this motor only has two concentrated windings, threephase motor only has 12 concentrated windings, the winding sum of motor is considerably less, simplified electric motor structure greatly, reduced cost, simultaneously winding overhang reduce to conventional motors 1/3～1/6 in addition more, reached and minimized, so copper loss declines to a great extent.
As shown in Figure 4, among embodiment of the utility model, stator core is formed with splicing institute by 13 parts are engaged, comprise contain six little teeth 9 and six little teeth 10 repeatedly press the integral type annular core 11 that forms by the multilayer silicon steel sheet from riveting, repeatedly press form 12 independently canine tooth iron cores 8 by the multilayer silicon steel sheet from riveting; Be respectively equipped with groove/boss on the yoke portion of annular core 11 and the canine tooth iron core 8, and the complete stator core of engaged formation.
At this structure, can on four canine tooth iron cores of A phase, wind the A phase winding of four series connection earlier, on four canine tooth iron cores of B phase, wind the B phase winding of four series connection, on four canine tooth iron cores of C phase, wind the C phase winding of four series connection, then 12 canine tooth iron cores that A, B, C three phase windings are housed are embedded on the annular core 11, promptly constitute the stator core assembly that A, B, C three phase windings are housed.Among this embodiment, can be easily canine tooth iron core be independently carried out insulation processing, then with automatically or semiautomatic winding machine the canine tooth iron core is implemented coiling.Its winding anufacturability is fine; Simultaneously, adopt overall structure annular core 11 can fully guarantee the geometric accuracy of stator core assembly.
Motor in the present embodiment has desirable Design of Tooth Width of Right Shaft, is respectively 23 ° of canine tooths, 9 ° in little tooth, 5 ° in little tooth, 2 * (2 * 23 °+9 °+5 °)=120 °, can constitute A, B, C three-phase symmetric winding, and the location torque inhibition is fine.This motor can adopt three-phase square wave electric current or three-phase sine-wave current drives, can both produce moment stably, and has that winding overhang is little, few with copper, loss is little, air gap is little, location torque is little and series of advantages such as overload capacity is strong.
As shown in Figure 5, among another embodiment of the present utility model,, comprise 12 canine tooths on its integral type annular core 12, and six little teeth 9 and six little teeth 10 are independently, are the complete stator core of engaged formation equally with embodiment illustrated in fig. 4 opposite.
During concrete the assembling, earlier 12 canine tooths are implemented insulation processing; Because be unkitted little tooth and little tooth this moment, the opening of annular core 12 is very big, can use automatic coil winding machine each phase winding of coiling on canine tooth 8 fully.For example on four canine tooths of A phase, wind earlier the A phase winding of four series connection respectively, on four canine tooths of B phase, wind the B phase winding of four series connection more respectively, on four canine tooth iron cores of C phase, wind the C phase winding of four series connection more respectively, to implement the yoke portion that six little tooth iron cores after the insulation processing and six little tooth iron cores embed annular cores 12 then, constitute the stator core assembly that A, B, C three phase windings are housed.
This motor can adopt three-phase square wave electric current or three-phase sine-wave current drives, can both produce moment stably, and has that winding overhang is little, few with copper, loss is little, air gap is little, location torque is little and series of advantages such as overload capacity is strong.
As shown in Figure 6, among another embodiment of the utility model, 12 independently teeth are arranged, promptly comprise by the multilayer silicon steel sheet and repeatedly press 12 independent canine tooths, six little teeth of independence and six the little teeth of independence that form from riveting; The yoke portion both sides of each tooth are provided with groove/boss, the complete stator core of the engaged formation of yoke portion of adjacent teeth.Wherein, each canine tooth accounts for 22.5 ° of mechanical angles of circumference, i.e. 180 ° of electrical degrees; Each little tooth accounts for 10 ° of mechanical angles of circumference, i.e. 80 ° of electrical degrees; Each little tooth accounts for 5 ° of mechanical angles of circumference, i.e. 40 ° of electrical degrees.
In the present embodiment, can with stator winding with automatically, semiautomatic winding machine or manual mode be wound on earlier on the independent canine tooth that surface insulation is handled, utilize positioning tool then, the little tooth of the canine tooth of winding, three no windings and the engaged in order stator module that is assembled into of little tooth of three no windings are arranged six.So after the coiling, connect between two concentrated windings of every phase, reduced wiring, simplified technology.
This motor can adopt three-phase square wave electric current or three-phase sine-wave current drives, can both produce moment stably, and has that winding overhang is little, few with copper, loss is little, air gap is little, location torque is little and series of advantages such as overload capacity is strong.
As shown in Figure 7, among the another embodiment of the present utility model, in order to obtain to be tending towards sinusoidal wave air-gap field or sinusoidal wave opposite potential waveform, adopted tile-shaped magnet steel, the cylindrical both sides of magnet steel are provided with angle and are not more than the top rake that 7.5 °, length are not more than the cylindrical arc length 1/4 of magnet steel.Physics air gap between this three-phase permanent servo-electric machine stator and the rotor is 2.0mm.So can obtain to be tending towards the air-gap field or the sinusoidal wave opposite potential waveform of sine wave after the design.Even, also be unlikely to produce excessive torque fluctuations so have non-sine in the threephase stator electric current.This motor adopts three-phase sine-wave current drives, can produce moment stably, and has that winding overhang is little, few with copper, loss is little, air gap is little, location torque is little and series of advantages such as overload capacity is strong.
The utility model is not limited to above-mentioned specific embodiment, and wherein, the shared circumference mechanical angle of each canine tooth on the stator core can be 22.5 ° ± 2.5 °, promptly 180 ° ± 20 ° electrical degrees; Each little tooth accounts for the circumference mechanical angle and can be 10 ° ± 2.5 °, promptly 80 ° ± 20 ° electrical degrees; Each little tooth accounts for the circumference mechanical angle and can be 5 ° ± 2.5 °, promptly 40 ° ± 20 ° electrical degrees; Equally, the shared circumference mechanical angle of each tooth of being said here comprises the width of notch 3, and the mechanical angle sum of need guarantee per four canine tooths, two little teeth simultaneously, adding two little teeth equals 120 °; For example 22 ° of canine tooths, 9.5 ° in little tooth, 6.5 ° in little tooth, 2 * (2 * 22 °+9.5 °+6.5 °)=120 °, for example 23 ° of canine tooths, 10 ° in little tooth, 4 ° in little tooth again, 2 * (2 * 23 °+10 °+4 °)=120 °, or the like.
Motor of the present utility model has the most approaching desirable canine tooth facewidth, its electrical degree is 180 ° ± 20 °, therefore its winding utilization is greater than 0.985 (sin (200 °/180 ° * 90 °)=0.985), the corresponding optimization that reaches in opposite potential flat-top district of this motor.
Claims (9)
1. three-phase permanent servomotor is equipped with manyly to permanent magnet (4) on the rotor core of described motor (1), in the teeth groove of stator (2) three phase windings are housed, and it is characterized in that the number of magnetic poles 2P=16 on the described rotor core; The groove of described stator core is counted Z=24, and 24 teeth should be arranged mutually, and the notch of described groove (3) width is 0.1～3.0mm; Comprise 12 canine tooths (8), six little teeth (9) and six littler little teeth (10) in described 24 teeth; Described three phase windings are 12 concentrated windings, be loaded on described 12 canine tooths the ordering of described winding and tooth respectively: the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of the canine tooth of little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding → little tooth → dress A phase winding → little tooth → dress C phase winding → little tooth → dress B phase winding; Each canine tooth on the described stator core accounts for 22.5 ° ± 2.5 ° mechanical angles of circumference, promptly 180 ° ± 20 ° electrical degrees; Each little tooth accounts for 10 ° ± 2.5 ° mechanical angles of circumference, promptly 80 ° ± 20 ° electrical degrees; Each little tooth accounts for 5 ° ± 2.5 ° mechanical angles of circumference, promptly 40 ° ± 20 ° electrical degrees; Wherein the shared circumference mechanical angle of each tooth comprises the width of a described notch (3), and wherein four canine tooths, two little teeth, the mechanical angle sum of adding two little teeth equal 120 °.
2. three-phase permanent servomotor according to claim 1 is characterized in that, on the described rotor core N of each permanent magnet, S magnetic pole alternately, described permanent magnet is the tile-shaped magnet steel of radial magnetizing or the tile-shaped magnet steel of parallel magnetization.
3. according to the described three-phase permanent servomotor of claim 2, it is characterized in that the cylindrical both sides of described tile-shaped magnet steel are provided with angle and are not more than the top rake that 7.5 °, length are not more than the cylindrical arc length 1/4 of magnet steel.
4. three-phase permanent servomotor according to claim 3 is characterized in that, the physics air gap between described stator and the rotor is 0.5～4mm.
5. according to each described three-phase permanent servomotor among the claim 1-4, it is characterized in that, described stator core is made up of 13 parts, comprise contain six little teeth and six little teeth repeatedly press the integral type annular core (11) that forms by the multilayer silicon steel sheet from riveting, repeatedly press form 12 independently canine tooth iron cores (8) by the multilayer silicon steel sheet from riveting; Be respectively equipped with groove/boss on the yoke portion of described annular core and the canine tooth iron core, and the complete stator core of engaged formation.
6. three-phase permanent servomotor according to claim 5, it is characterized in that, wherein earlier on four canine tooth iron cores around the A of four series connection phase winding, on other four canine tooth iron cores around the B of four series connection phase winding, on other four canine tooth iron cores around the C of four series connection phase winding, then described 12 the canine tooth iron cores that winding is housed are embedded respectively in the described annular core (11), constitute the stator core assembly that A, B, C three phase windings are housed.
7. according to each described three-phase permanent servomotor among the claim 1-4, it is characterized in that, described stator core is made up of 13 parts, comprise contain 12 canine tooths repeatedly press the integral type annular core (12) that forms by the multilayer silicon steel sheet from riveting, repeatedly press six independently little tooth iron cores forming and repeatedly press six independently little tooth iron cores that form from riveting from riveting by the multilayer silicon steel sheet by the multilayer silicon steel sheet; Be respectively equipped with groove/boss on the yoke portion of described annular core and little tooth, the little tooth iron core, and the complete stator core of engaged formation.
8. three-phase permanent servomotor according to claim 7, it is characterized in that, wherein on described annular core, 12 canine tooths are implemented insulation processing earlier, distinguish coiling A, B, C three phase windings then, again six little tooth iron cores and six little tooth iron cores are embedded the yoke portion of described annular core (12), constitute the stator core assembly that A, B, C three phase windings are housed.
9. according to each described three-phase permanent servomotor among the claim 1-4, it is characterized in that, described stator core is made up of 24 parts, promptly comprises by the multilayer silicon steel sheet repeatedly pressing 12 independent canine tooths, six little teeth of independence and six the little teeth of independence that form from riveting; The yoke portion both sides of each tooth are provided with groove/boss, the complete stator core of the engaged formation of yoke portion of adjacent teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200619367U CN201975969U (en) | 2011-03-10 | 2011-03-10 | Three-phase permanent magnet servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200619367U CN201975969U (en) | 2011-03-10 | 2011-03-10 | Three-phase permanent magnet servo motor |
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| CN201975969U true CN201975969U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200619367U Expired - Lifetime CN201975969U (en) | 2011-03-10 | 2011-03-10 | Three-phase permanent magnet servo motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103222166A (en) * | 2011-03-09 | 2013-07-24 | 浙江博望科技发展有限公司 | Three-phase permanent magnet servo motor |
| CN108233556A (en) * | 2016-12-15 | 2018-06-29 | 姚常勤 | A kind of stator and motor with optimization magnetic circuit |
-
2011
- 2011-03-10 CN CN2011200619367U patent/CN201975969U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103222166A (en) * | 2011-03-09 | 2013-07-24 | 浙江博望科技发展有限公司 | Three-phase permanent magnet servo motor |
| CN103222166B (en) * | 2011-03-09 | 2016-01-20 | 浙江博望科技发展有限公司 | A kind of three-phase permanent-magnetic servo |
| CN108233556A (en) * | 2016-12-15 | 2018-06-29 | 姚常勤 | A kind of stator and motor with optimization magnetic circuit |
| CN108233556B (en) * | 2016-12-15 | 2020-03-27 | 姚常勤 | Stator and motor with optimize magnetic circuit |
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