CN202085060U - Positioning Linear Motor Based on Halbach Permanent Magnet Array - Google Patents

Abstract

A positioning linear motor based on a halbach permanent magnetic array comprises a base plate and a flat plate pulley. Two parallel wheel tracks are arranged on the base plate, and wheels of the pulley are positioned in the wheel tracks so that the flat plate pulley can horizontally move along the wheel tracks. A stator positioned between the two wheel tracks is parallel to the base plate and arranged on the base plate, the stator comprises a stator core wound by insulating tapes, a three-phase winding is arranged outside the insulating tapes of the stator core, and the stator is fixed onto the base plate through a supporting column. The halbach permanent magnetic array is arranged on the flat plate pulley along the direction parallel to the wheel tracks, and an air gap is reserved between the halbach permanent magnetic array and the stator. By means of the halbach permanent magnetic array, force moment of tooth socket effect of the motor is greatly reduced, a more favorable sine distribution magnetic field can be achieved, and a stator skewed slot structure and distributed winding measure can be omitted. Furthermore, the positioning linear motor based on the halbach permanent magnetic array is simple in structure, convenient in manufacturing and low in cost.

Description

Location linear electric motors based on Haier's Bake permanent magnet array

Technical field

The utility model belongs to machine field, is specifically related to a kind of location linear electric motors.

Background technology

Traditional plane positioning system is by driver rotatablely moving of electric rotating machine to be converted into rectilinear motion, because the gear of driver, ball-screw have problems such as frictional dissipation, ball motion be uncertain, so be difficult to carry out high-precision location.Also have dust that mechanical friction causes, problem such as lubricated to need the technical staff that an accurate workbench is set in addition and carry out minute movement and proofread and correct, very numerous and diverse.

Linear electric motors are a kind of electric energy to be directly changed into straight-line mechanical energy, and the centre does not need through any conversion driving unit.This " zero transmission " makes the advantage that linear electric motors have a lot of conventional motors not have: simple in structure, contactless nothing wearing and tearing, noise is low, precision is high, reaction is fast etc.In recent years, linear electric motors have been subjected to widely paying close attention to, in industry-by-industry, also be used widely, as the application in the logistics system, the application in Digit Control Machine Tool, the application in the IT industry, traffic and civilian aspect application and application militarily.

That has developed at present can pinpoint linear electric motors, can directly bear load, do rectilinear motion.It is a kind of microfeed stepping motor that is similar to, and decides the position of motor movement spare by a succession of electric pulse, is similar to very much permagnetic synchronous motor again.Linear electric motors mainly are made up of the piston of a fixing platen and motion.Platen is a very long steel pole, and equidistant in the above etching has transverse groove; The simplest piston is to be made of a permanent magnet and two electromagnet, and two electromagnet are by same solenoid controlled, and the two poles of the earth of each electromagnet are all close with the platen upper surface.Piston is directed under the magnetic field force effect by ball bearing, moves back and forth above platen.Linear electric motors can have two kinds of peacekeeping bidimensionals.The shortcoming of this motor localization method is to adopt rotor flume structure and complicated measures such as distributed winding just can obtain more satisfactory Sine distribution magnetic field, and the magnetic field flux utilance is not high.

Summary of the invention

Technical problem:The utility model provides a kind of ideal sinusoidal distributed magnetic field that has to the deficiencies in the prior art and defective, and is simple in structure, the location linear electric motors based on Haier's Bake permanent magnet array that frictional dissipation is little.

Technical scheme:Location linear electric motors based on Haier's Bake permanent magnet array comprise base plate and Plan sliding transporting vehicle, and described base plate is provided with two parallel wheel tracks, and the wheel of described Plan sliding transporting vehicle is placed in the wheel track, make the Plan sliding transporting vehicle can be along the wheel track horizontal movement; Described base plate is provided with stator in parallel and between two wheel tracks, and described stator comprises the stator core that is wound with insulating tape, and the insulating tape of described stator core is outside equipped with winding, and stator is fixed on the base plate by pillar; Described Plan sliding transporting vehicle is provided with Haier's Bake permanent magnet array, and described Haier Bake permanent magnet array is along arranging with the wheel track parallel direction; Be provided with air gap between Haier's Bake permanent magnet array and the stator.

In the utility model, described winding is three phase windings.

Also there is the spatial variations of magnetic pole in the magnetic field of Haier Bake permanent magnet array in the utility model (being the Halbach permanent magnet), and this pole change is launched along in-plane, make magnetic field along the space by Sine distribution.The utility model utilizes the magnetic field of three phase windings energising back generation and the magnetic field interaction of Haier's Bake permanent magnet array, produce the power on horizontal direction and the vertical direction, make that mover can be by wheel and wheel track in base plate upper edge horizontal motion, and realize accurately location through three-phase winding current feedback.

Beneficial effect:The utility model has the following advantages with respect to prior art:

1) the Halbach permanent magnet array is arranged permanent magnet in a certain order, weakens the slot effect moment of motor greatly, can obtain more satisfactory Sine distribution magnetic field, need not adopt rotor flume structure and distributed winding measure again, simple in structure, easy to make, cost is low.

2) Halbach permanent magnet array Distribution of Magnetic Field one side magnetic field is very strong, and opposite side magnetic field is very weak, is similar to " magnetic monopole ".In this case, can improve the motor gas-gap magnetic density greatly.Can significantly reduce the motor flux leakage phenomenon on the one hand, reduce the magnetic disturbance of motor the outside; Reduce the quality of yoke portion iron core on the other hand, further reduce cost, improve the motor dynamic characteristic.Can also improve electric efficiency, reduce the electromagnetic force pulsation of motor, and cool off easily etc.

3) the Halbach array can produce very strong magnetic field in a side, make the mover matrix can adopt the aluminum alloy materials of high-strength low-density, then makes the mover light weight, and reaction is fast.

4) linear electric motors directly drive does not have mechanicalness noise, does not have the additional mass of additional driving error and leading screw etc., can obtain bigger acceleration and quicker response, also produces vertical force when producing monolateral power, can be used as the two degrees of freedom actuator.

Description of drawings

Fig. 1 is the utility model Facad structure figure.

Fig. 2 is the utility model construction profile.

Have among the figure: Plan sliding transportingvehicle 1, Haier's Bakepermanent magnet array 2, stator core 4, stator winding 5,base plate 7, wheel 8,wheel track 9,air gap 10.

Embodiment

A kind of location linear electric motors based on Haier's Bake permanent magnet array comprisebase plate 7 and Plan sliding transportingvehicle 1, and describedbase plate 7 is provided with twoparallel wheel tracks 9, and the wheel 8 of described Plan sliding transportingvehicle 1 is placed in thewheel track 9, make the Plan sliding transportingvehicle 1 can be alongwheel track 9 horizontal movements; Describedbase plate 7 is provided with stator in parallel and between two wheel tracks, and described stator comprises the stator core 4 that is wound with insulating tape, and the insulating tape of described stator core 4 is outside equipped with three phase windings, and stator is fixed on thebase plate 7 by pillar 6; Described Plan sliding transportingvehicle 1 is provided with Haier's Bake permanent magnet array, and described Haier Bake permanent magnet array is along arranging withwheel track 9 parallel directions; Be provided withair gap 10 between Haier's Bakepermanent magnet array 2 and the stator.

Three phase windings of the present utility model around stator core can be that aluminium alloy is made.For the processing of Halbach permanent magnet array, at first to clean magnet, mould, coat release agent or stick adhesive tape with contacting of magnetic row at mould, in case magnet and mould stick together; Connecting mould top and bottom with screw again, is standard can put into a magnet in the processing groove just; With the magnet spreading glue, head into processing groove successively, adjust magnet positions by location notch with thimble, and beat magnet and make it to fit tightly with groove face, tighten screw after putting well; Mould is placed on one side, treats that glue solidifies the back fully and takes out the magnetic row.For the design of mover matrix, have response characteristic fast in order to make the mover platform, can realize high resonance frequency by using the cellular type core plate structure.Honeycomb sandwich panels has the design feature of high strength/mass ratio, high rigidity/mass ratio, uniform withstand voltage degree, high non-deformability, so can obtain maximum non-deformability under the situation of little quality.For stator winding structure, adopt the aluminum stator core, reluctance force is less, and eddy current is also less; Adopt no teeth groove structure, eliminate teeth groove power; On stator core, post one deck insulating tape and can prevent winding insulation wearing and tearing back and stator core short circuit.

Claims (2)

Translated fromChinese

1.一种基于海尔贝克永磁阵列的定位直线电机，其特征在于，该定位直线电机包括底板（7）和平板滑车（1），所述底板（7）上设置有两条平行的轮轨（9），所述平板滑车（1）的车轮（8）放置在轮轨（9）中，使平板滑车（1）能沿轮轨（9）水平运动；1. A positioning linear motor based on Halbeck permanent magnet array, characterized in that the positioning linear motor includes a base plate (7) and a flat trolley (1), and the base plate (7) is provided with two parallel wheel rails (9), the wheels (8) of the flat trolley (1) are placed in the wheel rails (9), so that the flat trolley (1) can move horizontally along the wheel rails (9);所述底板（7）上设置有与其平行并位于两条轮轨之间的定子，所述定子包括缠绕有绝缘胶带的定子芯（4），所述定子芯（4）的绝缘胶带外设置有绕组（5），定子通过支柱（6）固定在底板（7）上；所述平板滑车（1）上设置有与定子平行的海尔贝克永磁阵列（2），所述海尔贝克永磁阵列（2）沿与轮轨（9）平行方向排列；海尔贝克永磁阵列（2）和定子之间设有气隙（10）。The bottom plate (7) is provided with a stator parallel to it and located between two wheel rails, the stator includes a stator core (4) wrapped with insulating tape, and the insulating tape of the stator core (4) is provided with Winding (5), the stator is fixed on the bottom plate (7) through the pillar (6); the Halbach permanent magnet array (2) parallel to the stator is set on the flat trolley (1), and the Halbach permanent magnet array ( 2) Arranged along a direction parallel to the wheel rail (9); an air gap (10) is provided between the Halbach permanent magnet array (2) and the stator.2.根据权利要求1所述的定位直线电机，其特征在于，所述绕组（5）为三相绕组。2. The positioning linear motor according to claim 1, characterized in that, the winding (5) is a three-phase winding.

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