CN202085059U - Permanent magnet linear drive - Google Patents
Permanent magnet linear drive Download PDFInfo
- Publication number
- CN202085059U CN202085059U CN2011201905436U CN201120190543U CN202085059U CN 202085059 U CN202085059 U CN 202085059U CN 2011201905436 U CN2011201905436 U CN 2011201905436U CN 201120190543 U CN201120190543 U CN 201120190543U CN 202085059 U CN202085059 U CN 202085059U
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- permanent magnet
- mst
- mover
- stator
- pedestal
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Abstract
A permanent magnet linear drive is characterized in that the linear drive comprises a pedestal; two parallel vertical supporting plates are disposed on the pedestal; a stator and a mover are arranged between the two parallel vertical supporting plates, wherein the stator is parallel to the mover; air gaps are formed between the mover and the stator; the stator comprises a primary iron coreless winding set; the two ends of the primary iron coreless winding set are fixed in the fixed grooves of the two vertical supporting plates; the mover comprises a substrate and horizontal supports arranged on the two sides of the substrate; one end of each horizontal support is connected with the substrate, and the other end of each horizontal support is connected with a sliding block; each sliding block is connected with a guide rail arranged on each vertical supporting plate in a mated manner; an MST multi-segment permanent magnet array is disposed on the pedestal; the MST multi-segment permanent magnet array is parallel to the guide rails; and each magnet in the MST multi-segment permanent magnet array rotates 90 degrees clockwise from left to right along the magnetizing direction successively. According to the utility model of the permanent magnet linear drive, the heat radiation performance is enhanced, the end portion winding effect is minimized, and the efficiency of the drive is improved.
Description
Technical field
The utility model relate to a kind of be applied to fields such as Digit Control Machine Tool, semiconductor equipment manufacturing high accuracy permanent-magnet linear driver.
Background technology
The rectilinear motion of the parts in the traditional machine tool system, great majority are that the transmission mechanism that electric rotating machine rotates by gear, ball screw assembly, class is converted into rectilinear motion, this drive mechanism exists backlash, friction, cause that the motor acceleration performance is low, problem such as recoil, mechanism's complexity and shock loading ability are low, be difficult to carry out high-precision location.Linear actuator is a kind ofly electric energy to be directly changed into rectilinear motion mechanical energy and need be by the novel linear drive unit of any intermediate conversion mechanism, can remedy the deficiency of traditional kind of drive, its speed height, acceleration is fast, maximum can reach 10 times of acceleration of gravity, positioning accuracy and repetitive positioning accuracy can reach micron order, even nanoscale.
In the traditional line design of Driver, the direction of magnetization Rotate 180 between adjacent permanent magnet °, under the situation of no back iron, the magnetic field of permanent magnet array both sides is symmetrical.In some design of Driver, winding is in a side of permanent magnet array, wishes that the magnetic field energy of this side accesses reinforcement; In other is used, magnetic screen is necessary (for example in magnetic suspension train is used, must realize magnetic screen in the compartment, otherwise can cause negative effect passenger's health), the permanent magnet array or the winding construction that therefore have monolateral magnetic characteristic are very with practical value.
MST(multi-segmented) many segmentations permanent magnet array is the modification of the Haier's Bake permanent magnet array (being the Halbach permanent magnet array) to standard.Each array can difference and the Halbach permanent magnet array of standard has same size in the shape and size of MST magnet magnet; Compare with the Halbach permanent magnet array of conventional magnet array and standard, the MST array of onesize linear actuator can produce bigger actuating force.Direction of magnetization half-twist between MST array adjacent permanent magnet has significantly " magnetic monopole " characteristic, and under the situation of no back iron guiding magnetic circuit, the MST array also can form enough big magnetic field in strong side.Iron-free MST driver is light weight not only, and iron loss is little, the drive efficiency height.
Common permanent-magnet linear driver can not provide on secondary magnet along the magnetic field of space Sine distribution, therefore harmonic field will produce the harmonic wave suspending power, make linear actuator produce fluctuation, and adopt three-phase control, winding is arranged complicated, the winding overhang effect is big, and radiating condition is poor, influences the runnability of linear actuator.
The utility model content
Technical problem:The utility model provides a kind of electromagnetic force fluctuation little, and the control precision height operates steadily, and the winding overhang effect is low, the permanent-magnet linear driver of perfect heat-dissipating.
Technical scheme:A kind of permanent-magnet linear driver, it is characterized in that this linear actuator is provided with pedestal, described pedestal is provided with two riser supports that are parallel to each other, be provided with stator and the mover that is parallel to each other between the described two riser supports, between described mover and the stator air gap arranged; Described stator comprises elementary no iron core winding, and the two ends of described elementary no iron core winding are fastened in the holddown groove on the riser support; Described mover comprises substrate and the horizontal stand that is arranged on described substrate both sides, and an end of described horizontal stand is connected with substrate, and the other end is connected with slide block, the guide rail sliding connection that is provided with on described slide block and the riser support; Pedestal is provided with many segmentations of MST permanent magnet array, described many segmentations of MST permanent magnet array along and the guide rail parallel direction arrange, in many segmentations of MST permanent magnet array the magnetizing direction of each permanent magnet put in order for: in its orientation from left to right successively dextrorotation turn 90 degrees.
In the utility model, described elementary no iron core winding (2) is two phase windings.Described air gap is 1 to 3 millimeter a air-gap between primary permanent magnet body and the elementary no iron core winding.
Permanent-magnet linear driver of the present utility model is done mover with many segmentations of MST permanent magnet array, no iron core two-phase Circular Winding is made stator, when giving the track ring shape winding biphase current that logical phase place has been controlled well, produce travelling-magnetic-field, and effect produces tractive effort between the permanent magnet mover, thereby drag the permanent magnet mover, moving linearly under the effect of ball-type line slideway.
Beneficial effect:Permanent-magnet linear driver of the present utility model adopts the MST array structure, the edge effect of MST magnet array is very little, the magnetic field harmonic wave is little, first-harmonic (sine wave) main field stronger than Halbach array structure is provided, make the electromagnetic force of linear actuator big and steady, control precision height, and the efficient and the bearing capacity of raising linear actuator; The below of MST permanent magnet array produces high-intensity magnetic field, and magnetic field above the magnet a little less than, stable and the little magnetic field along the space Sine distribution of harmonic wave can be provided.
Elementary no iron core winding inside does not add iron core, directly utilizes the air magnetic conduction, utilizes the air permeability to be constant character, not only can lower the end effect of winding, and avoid non-linear and the magnetic field saturated phenomenon, improves the accurate control ability of driver; Winding is divided into A, B two-phase, constitutes binary system, and winding is arranged simple, and radiating condition is good, and electric current is controlled easily.
The transverse width of elementary no iron core winding is wideer than secondary MST permanent magnet, and elementary no iron core winding winding mode is Circular Winding, can reduce the winding overhang effect, and radiating condition is good.
Description of drawings
Fig. 1 is the structural representation of the utility model permanent-magnet linear driver.
Fig. 2 is many segmentations of MST permanent magnet array arranged direction figure in the utility model.
Fig. 3 is the A-A cutaway view of Fig. 1.
Fig. 4 is elementary no iron core developed winding diagram.
Have among the above figure: many segmentations of MST permanent magnet array 1, elementary no iron core winding 2, riser support 3, substrate 4, pedestal 5, horizontal stand 6, slide block 7, guide rail 9, holddown groove 10, stator 11, mover 12.
Embodiment
A kind of permanent-magnet linear driver, it is characterized in that this linear actuator is provided with pedestal 5, described pedestal 5 is provided with two riser supports 3 that are parallel to each other, be provided with stator 11 and the mover 12 that is parallel to each other between the described two riser supports, between described mover 12 and the stator 11 air gap arranged; Described stator 11 comprises elementary no iron core winding 2, and the two ends of described elementary no iron core winding 2 are fastened in the holddown groove 10 on the riser support 3; Described mover 12 comprises substrate 4 and the horizontal stand 6 that is arranged on described substrate 4 both sides, and an end of described horizontal stand is connected with substrate, and the other end is connected with slide block 7, guide rail 9 sliding connections that are provided with on described slide block 7 and the riser support 3; Pedestal 4 is provided with many segmentations of MST permanent magnet array, described many segmentations of MST permanent magnet array is along arranging with the guide rail parallel direction, in many segmentations of MST permanent magnet array the magnetizing direction of each permanent magnet put in order for: in its orientation from left to right successively dextrorotation turn 90 degrees, left and right directions wherein is that benchmark is determined with the observer towards permanent magnet array section in its orientation.Described elementary no iron core winding 2 is two phase windings.
Permanent-magnet linear driver as shown in Figure 1 adopts the MST permanent magnet array to do mover, and the two-phase Circular Winding of no iron core is made elementary stator.Described MST permanent magnet array is made up of a plurality of rare earth permanent magnet neodymium iron borons, form by order among the figure by polylith triangle and trapezoidal permanent magnet unit, magnetizing direction between every permanent magnet has a certain degree, and forms array, and the magnetizing direction angle that Fig. 2 lists is 90 degree.Adjacent secondary permanent magnet magnetizing direction differs, can not only make magnetic field along the space by Sine distribution, and make permanent magnet array very strong near a side magnetic field of elementary nothing winding unshakable in one's determination, a side magnetic field that is fixed on the mover pedestal is very weak.Described elementary nothing winding unshakable in one's determination is the two-phase Circular Winding, and winding is divided into A, B two-phase, constitutes into binary system, makes that winding is easy to arrange, and the winding transverse width is wideer than the permanent magnet, can make linear actuator reduce the winding overhang effect, improves heat dispersion.
When this linear actuator leads to the two-phase exciting current at the stator ring winding, on air gap, produce the row ripple, and effect produces electromagnetic force down between the secondary individual layer MST permanent magnet, makes the MST permanent magnet under this electromagnetic force effect, steel ball rolls in spherical line slideway, drives permanent magnet and does rectilinear motion.Can on the permanent magnet line of motion, place a laser range finder, be used to control the distance of permanent-magnet linear driver motion, realize High Accuracy Control.
Claims (2)
1. permanent-magnet linear driver, it is characterized in that, this linear actuator is provided with pedestal (5), described pedestal (5) is provided with two riser supports (3) that are parallel to each other, be provided with the stator (11) and the mover (12) that are parallel to each other between the described two riser supports, between described stator (11) and the mover (12) air gap arranged;
Described stator (11) comprises elementary no iron core winding (2), and the two ends of described elementary no iron core winding (2) are fastened in the holddown groove (10) on the riser support (3);
Described mover (12) comprises substrate (4) and is arranged on the horizontal stand (6) of described substrate (4) both sides, one end of described horizontal stand (6) is connected with substrate (4), the other end is connected with slide block (7), and described slide block (7) is gone up guide rail (9) sliding connection that is provided with riser support (3); Pedestal (4) is provided with many segmentations of MST permanent magnet array (1), described many segmentations of MST permanent magnet array (1) along and guide rail (9) parallel direction arrange, in many segmentations of MST permanent magnet array (1) magnetizing direction of each permanent magnet put in order for: in its orientation from left to right successively dextrorotation turn 90 degrees.
2. permanent-magnet linear driver according to claim 1 is characterized in that, described elementary no iron core winding (2) is two phase windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201905436U CN202085059U (en) | 2011-06-08 | 2011-06-08 | Permanent magnet linear drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201905436U CN202085059U (en) | 2011-06-08 | 2011-06-08 | Permanent magnet linear drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202085059U true CN202085059U (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201905436U Expired - Fee Related CN202085059U (en) | 2011-06-08 | 2011-06-08 | Permanent magnet linear drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202085059U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016126644A1 (en) * | 2015-02-03 | 2016-08-11 | Otis Elevator Company | Halbach array assembly |
| CN107968546A (en) * | 2017-12-12 | 2018-04-27 | 曲阜师范大学 | A kind of transverse magnetic flux high-temperature superconducting magnetic levitation linear motor for track traffic |
| CN111764205A (en) * | 2020-07-23 | 2020-10-13 | 苏州英磁新能源科技有限公司 | Guide rail for magnetic suspension train |
| CN111764204A (en) * | 2020-07-23 | 2020-10-13 | 苏州英磁新能源科技有限公司 | Permanent magnet suspension rail and assembling method thereof |
| CN112299208A (en) * | 2019-07-26 | 2021-02-02 | 通力股份公司 | Conveyor for passengers or goods |
| CN113612328A (en) * | 2021-09-08 | 2021-11-05 | 北京航空航天大学 | Halbach-like magnetic pole array structure body for rotating motor |
-
2011
- 2011-06-08 CN CN2011201905436U patent/CN202085059U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016126644A1 (en) * | 2015-02-03 | 2016-08-11 | Otis Elevator Company | Halbach array assembly |
| CN107968546A (en) * | 2017-12-12 | 2018-04-27 | 曲阜师范大学 | A kind of transverse magnetic flux high-temperature superconducting magnetic levitation linear motor for track traffic |
| CN107968546B (en) * | 2017-12-12 | 2019-10-29 | 曲阜师范大学 | A kind of transverse magnetic flux high-temperature superconducting magnetic levitation linear motor for rail traffic |
| CN112299208A (en) * | 2019-07-26 | 2021-02-02 | 通力股份公司 | Conveyor for passengers or goods |
| CN111764205A (en) * | 2020-07-23 | 2020-10-13 | 苏州英磁新能源科技有限公司 | Guide rail for magnetic suspension train |
| CN111764204A (en) * | 2020-07-23 | 2020-10-13 | 苏州英磁新能源科技有限公司 | Permanent magnet suspension rail and assembling method thereof |
| CN113612328A (en) * | 2021-09-08 | 2021-11-05 | 北京航空航天大学 | Halbach-like magnetic pole array structure body for rotating motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20140608 |