CN204465308U - Permanent magnet synchronous linear motor capable of reducing thrust fluctuation - Google Patents
Permanent magnet synchronous linear motor capable of reducing thrust fluctuation Download PDFInfo
- Publication number
- CN204465308U CN204465308U CN201520231453.5U CN201520231453U CN204465308U CN 204465308 U CN204465308 U CN 204465308U CN 201520231453 U CN201520231453 U CN 201520231453U CN 204465308 U CN204465308 U CN 204465308U
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- Prior art keywords
- air core
- mover
- coil
- permanent magnet
- stator
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 230000010355 oscillation Effects 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 238000013459 approach Methods 0.000 abstract 1
- 230000005415 magnetization Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Linear Motors (AREA)
Abstract
The utility model discloses a permanent magnet synchronous linear motor capable of reducing thrust fluctuation, which comprises a rotor and a stator, wherein the stator is provided with a linear guide rail, and the rotor is arranged on the linear guide rail; the stator consists of an upper layer of iron yoke and a lower layer of iron yoke and a plurality of permanent magnets arranged on the inner surface of the iron yoke, the rotor is formed by packaging hollow coils, an insulating layer is arranged between every two adjacent hollow coils, and three currents are input by a drag chain; the method is characterized in that: the permanent magnet is made of NdFe30, radial magnetization is adopted, and the numerical relation satisfied between the distance a and the polar distance b between adjacent permanent magnets is as follows: and a/b is 0.120-0.135. The utility model discloses the cooperation size of reasonable settlement permanent magnet interval and polar distance for air gap magnetic field more approaches to the sine wave, reduces thrust fluctuation, effectively improves positioning accuracy.
Description
Technical field
The utility model relates to a kind of permanent magnetic linear synchronous motor, is more particularly for 12 groove 7 pole permanent magnetic linear synchronous motors.
Background technology
The outstanding advantages such as 12 groove 7 pole permanent magnetic linear synchronous motors have high thrust, fast response characteristic is good, structure is simple, non-maintaining, obtain extensive use in high-performance linear drive system.The motor of 12 groove 7 poles shown in Fig. 5 refers to that six air core coils correspond to upper and lower seven pairs of permanent magnets 5, and left side coil column 8 and right-hand line loop pillar 9 are respectively the left and right sides coil column of second air core coil.In prior art, clear and definite dimensional fits relation is not had between spacing on same iron yoke 4 between adjacent two permanent magnets 5 and pole span, fit dimension randomness is therebetween larger, thus cause the air-gap field waveform of motor effectively can not level off to sine wave, larger force oscillation is produced when motor is run, cause the shake of larger noise and motor itself, particularly more obvious during low speed, finally cause the harmful effect that positioning precision is not high.
Utility model content:
The utility model is the weak point for avoiding existing for above-mentioned prior art, provides a kind of permanent magnetic linear synchronous motor that can reduce force oscillation, to make motor effectively can suppress force oscillation when operating, improves its positioning precision.
The utility model is that technical solution problem adopts following technical scheme:
The utility model can reduce the permanent magnetic linear synchronous motor of force oscillation, and described linear electric motors comprise mover and stator, and described stator is provided with linear guides, and described mover is arranged on linear guides; Described stator is made up of upper and lower two-layer iron yoke and several permanent magnets of being located at iron yoke inner surface, and described mover is encapsulated by air core coil to form, and is provided with insulating barrier, and inputs three electric currents by drag chain between adjacent air core coil; Its design feature is: the material that described permanent magnet is selected is NdFe30, and adopts radial magnetizing, and the distance a between adjacent permanent magnet and the numerical relation met between pole span b are: a/b=0.120 ~ 0.135.
The design feature that the utility model can reduce the permanent magnetic linear synchronous motor of force oscillation is also:
Interval c in described air core coil between the coil column of the left and right sides is equal with the spacing d between adjacent two air core coils.
Make the width of left and right sides coil column in described air core coil be e, and have: e/ (d+e)=0.84 ~ 0.86.
Described air core coil adopts concentratred winding.
Insulating barrier between described adjacent hollow coil is with insulating resin glue for material, and each air core coil encapsulates in aggregates by insulating resin.
Described mover is iron-core-free mover, and described mover is formed by described air core coil individual packages.
Compared with the prior art, the utility model beneficial effect is embodied in:
The dimensional fits coefficient of permanent magnet spacing and the pole span of the utility model setting, makes air-gap field more level off to sine wave, reduces force oscillation, reach the effect of raising positioning precision.Also there is low noise, low jitter, manufacture craft simply simultaneously, be convenient to the features such as batch production.
Accompanying drawing explanation
Fig. 1 is the utility model whole motor structural representation;
Fig. 2 is stator structure schematic diagram in the utility model;
Fig. 3 is mover air core coil structural representation in the utility model;
Fig. 4 is the utility model overall structure radial cross-section;
Fig. 5 is 12 groove 7 pole motor body radial cross-section;
Number in the figure 1 mover, 2 stators, 3 linear guides, 4 iron yokes, 5 permanent magnets, 6 drag chains, 7 air core coils, coil column on the left of in the of 8,9 right-hand line loop pillars.Distance between the permanent magnet that a is adjacent, b pole span, the interval in c air core coil between the coil column of the left and right sides, the spacing between adjacent two air core coils of d, the width of e left and right sides coil column.
Embodiment
See Fig. 1 and Fig. 2, can reduce in the present embodiment the permanent magnetic linear synchronous motor of force oscillation identical with prior art be that it includes mover 1 and stator 2, be provided with linear guides 3 on the stator 2, mover 1 to be arranged on linear guides 3; Stator 2 is made up of upper and lower two-layer iron yoke 4 and several permanent magnets 5 of being located at iron yoke 4 inner surface, and mover 1 is encapsulated by air core coil 7 to form, and is provided with insulating barrier, and inputs three electric currents by drag chain 6 between adjacent air core coil 7.
In the present embodiment, the material that permanent magnet 5 is selected is NdFe30, and adopts radial magnetizing, and the distance a between adjacent permanent magnet and the numerical relation met between pole span b are: a/b=0.120 ~ 0.135.
In the present embodiment, corresponding vibrational power flow also comprises: as shown in Figure 4 and Figure 5, and the interval c in air core coil between the coil column of the left and right sides is equal with the spacing d between adjacent two air core coils; Make the width of left and right sides coil column in air core coil be e, and have: e/ (d+e)=0.84 ~ 0.86; Air core coil 7 adopts concentratred winding; Insulating barrier between adjacent hollow coil 7 is with insulating resin glue for material, and each air core coil 7 encapsulates in aggregates by insulating resin; Mover 1 is iron-core-free mover, and mover 1 is formed by air core coil 7 individual packages.
In concrete enforcement, the geometric structure diamete of permanent magnet itself remains unchanged, and the distance a between adjacent permanent magnet and pole span b meets: a/b=0.130, to make air-gap field waveform level off to sine wave, reaches the object reducing force oscillation.Mover in the present embodiment does not have iron core to be directly packaged into one by coil by resin glue, can reduce End Force that iron core causes and slot effect like this, and can play the object of insulation, be packaged into and be integrally convenient to install and mover moving linearly; As shown in Figure 3, the cavity size c of air core coil 7 of the present embodiment is equal with the spacing d of adjacent windings, and coil adopts concentratred winding.
When after mover access three-phase current, be coupled with stator magnet, produce thrust, mover is done reciprocating linear motion relative to stator.The utility model by the ratio of the distance between the adjacent permanent magnet that controls to be arranged on the same side and pole span within certain scope, and adjust spacing and the side coil column width of adjacent windings, both are made to meet certain numerical relation, and adopt the coil of iron-core-free directly as mover, thus make air-gap field more level off to sine wave, reduce End Force and Slot force again simultaneously, force oscillation when effectively inhibit motor to run, improve positioning precision, reduce noise when motor runs and shake.
Claims (6)
1. one kind can reduce the permanent magnetic linear synchronous motor of force oscillation, described linear electric motors comprise mover (1) and stator (2), described stator (2) is provided with linear guides (3), and described mover (1) is arranged on (3) on linear guides; Described stator (2) is made up of upper and lower two-layer iron yoke (4) and several permanent magnets (5) of being located at iron yoke (4) inner surface, described mover (1) is encapsulated by air core coil (7) to form, be provided with insulating barrier between adjacent air core coil (7), and input three electric currents by drag chain (6); It is characterized in that: the material that described permanent magnet (5) is selected is NdFe30, and adopts radial magnetizing, the numerical relation met between the distance a between adjacent permanent magnet (5) and pole span b is: a/b=0.120 ~ 0.135.
2. the permanent magnetic linear synchronous motor that can reduce force oscillation according to claims 1, is characterized in that: the interval c in described air core coil (7) between the coil column of the left and right sides is equal with the spacing d between adjacent two air core coils (7).
3. the permanent magnetic linear synchronous motor that can reduce force oscillation according to claims 1, is characterized in that: make the width of left and right sides coil column in described air core coil (7) be e, and have: e/ (d+e)=0.84 ~ 0.86.
4. the permanent magnetic linear synchronous motor that can reduce force oscillation according to claims 1, is characterized in that: described air core coil (7) adopts concentratred winding.
5. the permanent magnetic linear synchronous motor that can reduce force oscillation according to claims 1, it is characterized in that: the insulating barrier between described adjacent hollow coil (7) is with insulating resin glue for material, and each air core coil (7) encapsulates in aggregates by insulating resin.
6. the permanent magnetic linear synchronous motor that can reduce force oscillation according to claims 1, it is characterized in that: described mover (1) is iron-core-free mover, described mover (1) is formed by described air core coil (7) individual packages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520231453.5U CN204465308U (en) | 2015-04-16 | 2015-04-16 | Permanent magnet synchronous linear motor capable of reducing thrust fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520231453.5U CN204465308U (en) | 2015-04-16 | 2015-04-16 | Permanent magnet synchronous linear motor capable of reducing thrust fluctuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204465308U true CN204465308U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520231453.5U Expired - Fee Related CN204465308U (en) | 2015-04-16 | 2015-04-16 | Permanent magnet synchronous linear motor capable of reducing thrust fluctuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204465308U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387310A (en) * | 2015-12-28 | 2016-03-09 | 中国人民解放军国防科学技术大学 | Maglev type precise positioning platform |
| CN106685178A (en) * | 2017-03-03 | 2017-05-17 | 安徽大学 | Viscoelastic damping structure based on permanent magnet synchronous linear motor and application thereof |
| CN108023460A (en) * | 2018-02-02 | 2018-05-11 | 上海莫戈纳机电科技有限公司 | Linear electric machine |
-
2015
- 2015-04-16 CN CN201520231453.5U patent/CN204465308U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387310A (en) * | 2015-12-28 | 2016-03-09 | 中国人民解放军国防科学技术大学 | Maglev type precise positioning platform |
| CN106685178A (en) * | 2017-03-03 | 2017-05-17 | 安徽大学 | Viscoelastic damping structure based on permanent magnet synchronous linear motor and application thereof |
| CN108023460A (en) * | 2018-02-02 | 2018-05-11 | 上海莫戈纳机电科技有限公司 | Linear electric machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160416 |