CN208806733U - Mover assembly, linear motor - Google Patents
Mover assembly, linear motor Download PDFInfo
- Publication number
- CN208806733U CN208806733U CN201821560142.3U CN201821560142U CN208806733U CN 208806733 U CN208806733 U CN 208806733U CN 201821560142 U CN201821560142 U CN 201821560142U CN 208806733 U CN208806733 U CN 208806733U
- Authority
- CN
- China
- Prior art keywords
- iron core
- mover
- mover assembly
- linear motor
- auxiliary
- Prior art date
- 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.)
- Active
Links
Abstract
The utility model provides a kind of mover assembly, linear motor.A kind of mover assembly, including loading mounting plate, mover iron core, auxiliary iron core, the mover iron core grip portion and the side of the auxiliary iron core is connect with the load mounting plate, and between the auxiliary iron core and the end of the mover iron core in the direction of motion of the mover assembly have interval region.A kind of mover assembly according to the present utility model, linear motor, can compensate for the magnetic field of mover core ends gap, reduce the distortion in magnetic field, improve the overall distribution in magnetic field, the sine degree of air gap flux density is improved, reduces thrust calculation, and then improve the positioning accuracy of linear motor.
Description
Technical field
The utility model belongs to technical field of motors, and in particular to a kind of mover assembly, linear motor.
Background technique
Linear movement motor has quick, high-precision spy for " electric rotating motivation+ball-screw " structure
Point can directly drag load and carry out linear quickly movement, but since there are the disconnected of mover iron core left and right ends for linear motor
Portion 1 ' (as shown in Figure 1) is opened, end magnetic field is caused to distort, forms the end effect of motor, end effect is to Distribution of Magnetic Field, gas
Gap flux density, three-phase windings inductance etc. generate complex effects, and motor horizontal thrust is caused serious pulsation, the pulsation meeting occur
The positioning accuracy of linear motor is seriously affected, the influence of end effect for how reducing linear motor is particularly important.
Utility model content
Therefore, it the technical problem to be solved by the present invention is to provide a kind of mover assembly, linear motor, can compensate for
The magnetic field of mover core ends gap, reduces the distortion in magnetic field, improves the overall distribution in magnetic field, improves the sine of air gap flux density
Degree reduces thrust calculation, and then improves the positioning accuracy of linear motor.
To solve the above-mentioned problems, the utility model provides a kind of mover assembly, including load mounting plate, mover iron core,
Auxiliary iron core, the mover iron core grip portion and the side of the auxiliary iron core is connect with the load mounting plate, and it is described auxiliary
Help has interval region in the direction of motion of the mover assembly between iron core and the end of the mover iron core.
Preferably, magnetic separator is equipped in the interval region.
Preferably, the magnetic separator is one of copper, aluminium or moulding.
Preferably, the thickness of the auxiliary iron core is not more than the thickness of the mover iron core.
Preferably, the auxiliary iron core have free end, the free end end face and it is described load mounting plate between away from
From for b, when the mover assembly and stator core assemble, multiple magnet steel are installed on the stator core, the two of arbitrary neighborhood
The pole span of a magnet steel is τ, τ≤1.77 1.46≤b/ or τ≤1.77 1.56≤b/.
Preferably, τ≤1.77 1.56≤b/.
Preferably, the auxiliary iron core has the first symmetrical center line, and the mover iron core has teeth portion, with the auxiliary
The adjacent teeth portion of iron core has the second symmetrical center line, and first symmetrical center line is with second symmetrical center line described
There is spacing c, τ≤0.52 0.35≤c/ or τ≤0.67 0.46≤c/ in the direction of motion.
Preferably, τ≤0.52 0.46≤c/.
The utility model also provides a kind of linear motor, including above-mentioned mover assembly.
A kind of mover assembly provided by the utility model, linear motor, due at the end interval of the mover iron core
Provided with the auxiliary iron core, the auxiliary iron core can compensate for the magnetic field of the mover core ends gap, to reduce
The distortion in magnetic field, improves the overall distribution in magnetic field, improves the sine degree of air gap flux density, this advantageously reduces linear motor
Thrust calculation in the process of running, and then can be improved the positioning accuracy of linear motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mover assembly in the prior art；
Fig. 2 is the structural schematic diagram of the mover assembly of the utility model embodiment；
Fig. 3 is the partial enlargement structural representation of Fig. 2；
Fig. 4 is the force oscillation and b/ τ curved line relation of the linear motor using the mover assembly of the utility model embodiment；
Fig. 5 is the force oscillation and c/ τ curved line relation of the linear motor using the mover assembly of the utility model embodiment.
Appended drawing reference indicates are as follows:
1, mounting plate is loaded；2, mover iron core；21, portion is gripped；22, end；23, teeth portion；3, auxiliary iron core；4, stator iron
Core；5, interval region；6, winding；7, magnet steel；1 ', disconnecting unit.
Specific embodiment
Referring to shown in Fig. 1 to 5, embodiment according to the present utility model provides a kind of mover assembly, including load mounting plate
1, mover iron core 2, auxiliary iron core 3, the side for gripping portion 21 and the auxiliary iron core 3 of the mover iron core 2 and the load are pacified
Loading board 1 connects, and in the direction of motion of the mover assembly between the auxiliary iron core 3 and the end 22 of the mover iron core 2
It is upper that there is interval region 5.In the technical solution, since interval is provided with the auxiliary at the end 22 of the mover iron core 2
Iron core 3, the auxiliary iron core 3 can compensate for the magnetic field of 2 end of mover iron core, 22 gap, to reduce the abnormal of magnetic field
Become, improves the overall distribution in magnetic field, improve the sine degree of air gap flux density, this advantageously reduces linear motor in operational process
In thrust calculation, and then can be improved the positioning accuracy of linear motor.It can be understood that being not provided in the interval region 5
When magnetic separator, air inside will be filled with, since air has the function of every magnetic, can be not provided with accordingly every magnetic material
Material, and preferably, one of magnetic separator, such as copper, aluminium or moulding are set in the interval region 5, it can be into one
Step optimizes the magnetic circuit of 2 end of mover iron core.
Further, the thickness of the auxiliary iron core 3 is not more than the thickness of the mover iron core 2, what thickness herein referred to
It is the thickness for gripping 21 extending direction of portion being in perpendicular to the mover iron core 2, more specifically, when the mover iron core 2 uses
When silicon steel sheet closed assembly, thickness above-mentioned is corresponding with folded thickness.
To further increase positioning accuracy of the mover assembly after being applied in linear motor, it is necessary to pass through examination
It tests, simulation means carry out further the correlation between the auxiliary iron core 3 and the mover iron core 2 or even stator core 4
Research.
Specifically, the auxiliary iron core 3 has free end, between the free end end face and the load mounting plate 1
Distance is b, when the mover assembly and the assembling of stator core 4, installs multiple magnet steel 7, arbitrary neighborhood on the stator core 4
Two magnet steel 7 pole span be τ, the auxiliary iron core 3 have the first symmetrical center line, the mover iron core 2 have tooth
Portion 23, the teeth portion 23 adjacent with the auxiliary iron core 3 have the second symmetrical center line, first symmetrical center line and described the
Two symmetrical center lines have spacing c in the direction of movement, at this point, setting steady state value for the c, carry out parametrization scanning
Simulation calculation can obtain curve shown in Fig. 4.
The positioning accuracy of the unloaded detent force reflection linear crawling exercises of linear motor, is the important indicator of linear motor,
Idle thrust fluctuation is smaller, and positioning accuracy is higher, and different b/ τ numerical value lower thrust fluctuations are as shown in figure 4, τ≤1.77 1.46≤b/
When zero load force oscillation it is smaller, when b/ τ be greater than 1.77 when, force oscillation obviously increases considerably.And nominal load force oscillation
Reflect the positioning accuracy during linear motor feed motion, load thrust fluctuation is smaller, and feed system stability is better, precision
Higher, the fluctuation of different b/ τ numerical value lower thrusts is as shown in figure 4, zero load force oscillation is smaller when 1.56≤b/ τ≤1.77, when b/ τ is small
When 1.56 or b/ τ is greater than 1.77, force oscillation can be increased considerably obviously, it can be seen that, as 1.56≤b/ τ≤1.77
Linear motor force oscillation is minimum.
Further, steady state value is set by the b, carries out parametrization scanning simulation calculation, song shown in fig. 5 can be obtained
Line.
The fluctuation of different c/ τ numerical value lower thrusts works as c/ as shown in figure 5, zero load force oscillation is smaller when 0.35≤c/ τ≤0.52
Less than 0.35 or when c/ τ is greater than 0.52, force oscillation obviously increases considerably τ；Different c/ τ numerical value lower thrust fluctuations are such as Fig. 5 institute
Show, zero load force oscillation is smaller when 0.46≤c/ τ≤0.67, and when c/ τ is less than 0.46 or c/ τ is greater than 0.67, force oscillation is equal
It can obviously increase considerably.
It can be seen that linear motor force oscillation is minimum as 0.46≤c/ τ≤0.52.
In summary two kinds of analyses are it is found that when τ≤1.77 1.56≤b/ and 0.46≤c/ τ≤0.52, linear motor
Force oscillation is minimum, positioning accuracy highest, and linear feeding overall system performance is best.
Certain mover assembly further includes winding 6, and the winding 6 is wound around 2 uniform intervals of mover iron core and lays
23 periphery of teeth portion.
The utility model also provides a kind of linear motor, including above-mentioned mover assembly, can compensate for mover core ends
The magnetic field of gap reduces the distortion in magnetic field, improves the overall distribution in magnetic field, improves the sine degree of air gap flux density, reduces thrust
Pulsation, and then improve the positioning accuracy of linear motor.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with modification.
Claims (9)
1. a kind of mover assembly, which is characterized in that described including loading mounting plate (1), mover iron core (2), auxiliary iron core (3)
Mover iron core (2) grip portion (21) and the side of the auxiliary iron core (3) is connect with the load mounting plate (1), and it is described auxiliary
Help has spacer region in the direction of motion of the mover assembly between iron core (3) and the end (22) of the mover iron core (2)
Domain (5).
2. mover assembly according to claim 1, which is characterized in that be equipped with magnetic separator in the interval region (5).
3. mover assembly according to claim 2, which is characterized in that the magnetic separator is in copper, aluminium or moulding
It is a kind of.
4. mover assembly according to claim 1, which is characterized in that the thickness of the auxiliary iron core (3) is no more than described
The thickness of mover iron core (2).
5. mover assembly according to claim 1, which is characterized in that the auxiliary iron core (3) have free end, it is described from
It is b by end the distance between end face and the load mounting plate (1), when the mover assembly and stator core (4) assembling, institute
It states and is installed on stator core (4) multiple magnet steel (7), the pole span of the magnet steel (7) of two of arbitrary neighborhood is τ, 1.46≤b/ τ≤
τ≤1.77 1.77 or 1.56≤b/.
6. mover assembly according to claim 5, which is characterized in that τ≤1.77 1.56≤b/.
7. mover assembly according to claim 5, which is characterized in that the auxiliary iron core (3) has the first symmetrical centre
Line, the mover iron core (2) have teeth portion (23), the teeth portion (23) adjacent with the auxiliary iron core (3) have second it is symmetrical in
Heart line, first symmetrical center line and second symmetrical center line have spacing c, 0.35≤c/ in the direction of movement
τ≤0.52 or τ≤0.67 0.46≤c/.
8. mover assembly according to claim 7, which is characterized in that τ≤0.52 0.46≤c/.
9. a kind of linear motor, including mover assembly, which is characterized in that the mover assembly is any one of claims 1 to 8
The mover assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821560142.3U CN208806733U (en) | 2018-09-25 | 2018-09-25 | Mover assembly, linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821560142.3U CN208806733U (en) | 2018-09-25 | 2018-09-25 | Mover assembly, linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208806733U true CN208806733U (en) | 2019-04-30 |
Family
ID=66237525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821560142.3U Active CN208806733U (en) | 2018-09-25 | 2018-09-25 | Mover assembly, linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208806733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104065A (en) * | 2018-09-25 | 2018-12-28 | 珠海格力电器股份有限公司 | Mover assembly, linear motor |
-
2018
- 2018-09-25 CN CN201821560142.3U patent/CN208806733U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104065A (en) * | 2018-09-25 | 2018-12-28 | 珠海格力电器股份有限公司 | Mover assembly, linear motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208806733U (en) | Mover assembly, linear motor | |
| CN104852537A (en) | Three-dimensional air gap Halbach permanent magnet arc-shaped motor for astronomical telescope and control method of three-dimensional air gap Halbach permanent magnet arc-shaped motor | |
| CN103487224B (en) | A kind of double magnetic source magnetic structure of magneto angle vibration table | |
| CN109104065A (en) | Mover assembly, linear motor | |
| CN101702367A (en) | Transductor used for direct-current current transformation valve | |
| CN102479609A (en) | Magnetic shield for current transformer in electronic watt-hour meter | |
| CN110162892B (en) | Large synchronous phase modulator stator end leakage inductance calculation method | |
| CN104848937B (en) | The cylindrical low-frequency vibration calibration console of the symmetrical excitation in two permanent magnetism pipe two ends that magnetic field tracking compensates | |
| CN104865029B (en) | The cylindrical hermetic magnetic field type electromagnetic vibration generator system magnetic structure of the long centripetal excitation of permanent magnetism pipe | |
| CN108206595B (en) | Permanent magnet motor | |
| Chan et al. | Computation of no-load and armature reaction fields of an axial-flux permanent-magnet synchronous generator | |
| CN104848938B (en) | The cylindrical low-frequency vibration calibration console of the symmetrical excitation in the double magnetic circuit two ends that magnetic field tracking compensates | |
| CN205984495U (en) | Modular annular magnetic core | |
| CN104849008B (en) | The cylindrical hermetic magnetic field type low-frequency vibration calibration console of the long centripetal excitation of permanent magnetism pipe | |
| CN104865030B (en) | The double magnetic circuit symmetry excitation cylindrical hermetic magnetic field type electromagnetic vibration generator system magnetic structure that magnetic field tracking compensates | |
| CN203135613U (en) | Mover coil structure | |
| CN104848939B (en) | The four magnetic circuits symmetrical excitation rectangle low-frequency vibration calibration console that magnetic field tracking compensates | |
| CN104907242B (en) | The long permanent magnetism pipe centripetal excitation cylindrical hermetic magnetic field type electromagnetic vibration generator system magnetic structure that magnetic field tracking compensates | |
| CN104848930B (en) | The open magnetic field type electromagnetic vibration generator system magnetic structure of the centripetal excitation rectangle of double permanent magnet of eddy current compensation | |
| CN104848932B (en) | The open magnetic field type low-frequency vibration calibration console of the rectangle of double magnetic circuit two ends symmetry excitation | |
| CN113644763B (en) | Electromagnetic design method for high-speed permanent magnet synchronous motor with increased inductance | |
| CN218038792U (en) | Parallel reactor iron yoke and reactor | |
| Li et al. | Suppression of Thrust Fluctuation of a New Ironless Tubular Permanent Magnet Synchronous Linear Motor Based on the Halbach Array | |
| CN208015560U (en) | A kind of rotary transformer | |
| Yuqiu et al. | Field and thrust analysis of linear servo motor with permanent-magnet of different shapes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |