CN101064464A - Hybrid permanent magnet type electric rotating machine and manufacturing method thereof - Google Patents
Hybrid permanent magnet type electric rotating machine and manufacturing method thereof Download PDFInfo
- Publication number
- CN101064464A CN101064464A CNA2007101097875A CN200710109787A CN101064464A CN 101064464 A CN101064464 A CN 101064464A CN A2007101097875 A CNA2007101097875 A CN A2007101097875A CN 200710109787 A CN200710109787 A CN 200710109787A CN 101064464 A CN101064464 A CN 101064464A
- Authority
- CN
- China
- Prior art keywords
- rotor
- rotor unit
- magnetize
- ferromagnetic material
- core
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 41
- 230000004907 flux Effects 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000005291 magnetic effect Effects 0.000 claims description 177
- 239000003302 ferromagnetic material Substances 0.000 claims description 156
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 73
- 230000005415 magnetization Effects 0.000 claims description 63
- 238000000034 method Methods 0.000 claims description 45
- 230000002093 peripheral effect Effects 0.000 claims description 40
- 239000004020 conductor Substances 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 230000005284 excitation Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 239000000696 magnetic material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 210000000529 third trochanter Anatomy 0.000 description 13
- 239000012212 insulator Substances 0.000 description 12
- 229910000859 α-Fe Inorganic materials 0.000 description 10
- 229910000976 Electrical steel Inorganic materials 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000003475 lamination Methods 0.000 description 6
- 229910052779 Neodymium Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 201000011180 Dental Pulp Calcification Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Abstract
A stator is constructed by winding excitation coils around respective main poles in a hybrid permanent magnet type electric rotating machine. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.
Description
Technical field
The present invention relates to hybrid (following brief note is HB) permanent magnet rotating machine and manufacture method thereof of in the OA equipment of the image of handling facsimile machine, ink-jet printer, laser printer or photocopier etc., using.
Background technology
Figure 14, Figure 15 represent 2 phase HB type stepping motors of prior art, and Figure 14 is a vertical section, and Figure 15 is the front elevation of the relation of expression rotor core and stator core.This stepping motor 100 has stator 110 and rotor 130, and stator 110 has 2 stator cores 111 of 8 main poles mutually, and rotor 130 is fixed on rotation and is supported in freely on the rotating shaft 120 of inside of this stator.Stator 110 constitutes by the stator core 111 that support 112, the 113 clamping lamination silicon steel plates that form with nonmagnetic material from axial both sides form, on each the main pole 111a that is formed on the stator core 111, coiling is wound onto the excitation coil 114 on the bobbin 115.On stator core 111, as shown in figure 15, it is radial that 8 main poles are configured to towards interior all sides, on the tip of each main pole 111a, forms a plurality of inductor 111b respectively.
In addition, on 8 main pole 111a of stator core 111, as among Figure 15 with A phase, B phase, A ' phase, B ' mutually shown in like that, at the coil of the 1 not shown phase amount of on 14, reeling.In this occasion, owing to constituting exciting current, the main poles that are positioned at 180 degree opposite location places become identical polar, so the attraction of conduct normal direction is radially offseted all the time, the torque composition of the tangential direction of rotor periphery only appears.
But in the structure (full main pole structure) of above-mentioned prior art, the main pole number of stator is many, the manufacturing cost height.Therefore, when stator is got 4 main poles as economizing main pole structure (half main pole structure), for example in the occasion that rotor core 131 is drawn to upside as N polarity, rotor core 132 is drawn to downside as S polarity, take place because the uneven electromagnetic force that radial attraction force causes, take place because the couple that so-called layback causes is vibrated or noise and produce, positioning accuracy also worsens.
On the other hand, in No. 6781260 communiques of United States Patent (USP), the stepping motor of province's main pole that vibration is little, torque is big (half main pole) structure of 4 main poles is disclosed.During disclosed motor is constructed in this communique, in the stator of coil of having reeled, prepare two groups of rotor units with a pair of rotor core clamping permanent magnet that one pole has magnetized on its plane annularly, be that core makes the homopolarity of the magnetic pole that magnetizes of permanent magnet relatively install with the motor reel, and dispose to such an extent that the polarity of little tooth of above-mentioned two groups of rotor cores adjacent to each other is identical mutually.In the motor structure of this mode, because rotor core is 4, so compare with existing 2 structure, disperse the radial direction attraction of respective amount and be able to balance, therefore there is not uneven torque force, because vibration or noise that the gap of bearing etc. causes are more favourable than prior motor, become low vibration low noise.In addition, the motor of the same size of the full main pole structure shown in this stepping motor and Figure 14,15 relatively can obtain the torque of about twice in theory.Perhaps, can enlarge the air gap between stator and the rotor, improve fraction defective and improve reliability in the occasion that obtains the torque identical with the motor of full main pole structure.And then, use the rare earth element magnet of high energy with respect to full main pole motor, and can use the cheap such permanent magnet of for example ferrite, therefore can expect to reduce the effect of price.
But, in No. 6781260 communiques of United States Patent (USP), in the disclosed motor structure, two permanent magnets need be magnetized to diamagnetism, do not establish suitable Magnitizing method.That is the magnetic flux of permanent magnet by the magnetic flux density that reaches capacity magnetizes, but after finishing, rotor or motor carry out magnetized occasion, when the used existing known use magnetizer of hollow coil when magnetizing two permanent magnets simultaneously, because the magnetization magnetic flux is mutually exclusive on direction of principal axis, so the magnetization of permanent magnet part is insufficient.In addition, when every next setting-up time difference of two permanent magnets is magnetized, the magnetic flux that has magnetized a side rotor unit permanent magnet leaks to the opposing party's rotor unit, this leakage magnetic flux is arranged with the opposite magnetic of magnetic that the permanent magnet with the opposing party's rotor unit is magnetized to and wishes, perhaps make the problem of permanent magnet degaussing of the opposing party's of having magnetized rotor unit.Therefore prior art is to use with the component-assembled rotor behind the monomer magnet magnetization, but in such method, has when assembling permanent magnet attraction iron powder or dust cause the assembling difficulty, and the problem that the reliability of the electric rotating machine of finishing is reduced.
Summary of the invention
First purpose of the present invention provides a kind of manufacture method, it can behind assembling electric rotating machine or the rotor suitably to as disclose in No. 6781260 communiques of United States Patent (USP), two permanent magnets that rotor comprises the HB formula permanent magnet rotating machine of two group rotor unit magnetize.
In addition, second purpose of the present invention provides the HB formula permanent magnet rotating machine that is fit to above-mentioned manufacture method.
The manufacture method of the HB formula permanent magnet rotating machine of first form of the present invention is characterised in that, for realizing above-mentioned first purpose, from the magnetic of polygon or ring-type is radial a plurality of main poles are set, on each main pole of the stator core that is formed with a plurality of inductors on the tip of each main pole, coiling magnet exciting coil and constitute 24 main poles, 3,3 main poles or 5 stators of 5 main poles mutually mutually mutually
A plurality of little teeth being arranged on the outer peripheral face, departing from 1/2 tooth pitch of little tooth and the clip magnet material constitutes between two rotor cores disposing the first rotor unit and be fixed on the common rotational axis with second rotor unit of this first rotor unit same structure at circumferencial direction, the position of little tooth that makes approaching rotor core is identical and constitute rotor
First support in the outside by being configured in the first rotor unit and be configured in second support in the outside of second rotor unit is guaranteed the air gap of stipulating and is rotated assemble rotor freely with respect to stator,
First magnetize and use magnetic circuit by what the peripheral part that uses yoke will comprise the part of rotation axis of first bracket side and stator core in the outside of assembly linked up, make the magnetization magnetic flux on direction of principal axis, connect first support and the first rotor unit, and generally perpendicularly connect stator core with respect to rotation axis, thereby make and connect the axial only about half of of assembly, and on direction of principal axis the ferromagnetic material of magnetization the first rotor unit
Second magnetize and use magnetic circuit by what the peripheral part that uses yoke will comprise the part of rotation axis of second bracket side and stator core in the outside of assembly linked up, make the magnetization magnetic flux on direction of principal axis, connect second support and second rotor unit, and generally perpendicularly connect stator core with respect to rotation axis, thereby connect the axial remaining only about half of of assembly, on direction of principal axis, the ferromagnetic material of second rotor unit is magnetized to ferromagnetic material rightabout with the first rotor unit.
According to above-mentioned first form, because being installed, rotor back magnetization ferromagnetic material forms permanent magnet on stator, so in the assembling of electric rotating machine iron powder or dust can be attached to rotor on, assembling operation becomes easily, and can improve the reliability of electric rotating machine.
In addition, have the magnetizer of yoke as described above, can suitably magnetize the permanent magnet of first, second rotor unit with opposite respectively polarity by use.
And then, have the magnetizer of yoke by use, with use utilized existing hollow coil magnetizer occasion relatively, can magnetize with little electric power.
In addition, assembled electric rotating machine has two groups of rotor units that comprise permanent magnet respectively, therefore compare with existing occasion with a group rotor unit, even the magnetic flux density of each permanent magnet is little also enough, can use the cheap magnet of cost of the such ferromagnetic material of binding magnet or ferrite lattice, the existing structure of the magnet of expensive ferromagnetic material relatively can reduce the cost of electric rotating machine integral body with using neodium magnet etc.In addition, because rotor has two group rotor unit,, can suppress to carry out the assembling operation of stator easily because coiling is simplified in the generation of the vibration that causes of uneven torque, noise etc. simultaneously so the main pole number of stator can prevent uneven torque at least.
In first form, also can use and have first simultaneously and magnetize with magnetize magnetizer with magnetic circuit of magnetic circuit and second, magnetize the ferromagnetic material of the first rotor unit and the ferromagnetic material of second rotor unit simultaneously, can also only have first and magnetize and magnetize with magnetic circuit one side's magnetizer after magnetizing the ferromagnetic material of the first rotor unit using with magnetic circuit and second, take out assembly from magnetizer, the direction of principal axis counter-rotating also is set in the magnetizer once more, magnetizes the ferromagnetic material of second rotor unit.
So-called " approaching rotor core " not only refers to two rotor cores directly near the occasion that forms a rotor core, refers to that also two rotor cores are at middle clamping miscellaneous part and approaching occasion.
The manufacture method of the HB formula permanent magnet rotating machine of second form of the present invention is characterised in that, for realizing above-mentioned first purpose, from the magnetic of polygon or ring-type is radial a plurality of main poles are set, on each main pole of the stator core that is formed with a plurality of inductors on the tip of each main pole, coiling magnet exciting coil and constitute 24 main poles, 3,3 main poles or 5 stators of 5 main poles mutually mutually mutually
A plurality of little teeth being arranged on the outer peripheral face, departing from 1/2 tooth pitch of little tooth and the clip magnet material constitutes between two rotor cores disposing the first rotor unit and be fixed on the common rotational axis in a circumferential direction with second rotor unit of this first rotor unit same structure, the position of little tooth that makes approaching rotor core is identical and constitute rotor
What the peripheral part of the rotor core of the inboard of the side by the outside rotor iron core by will comprising the first rotor unit with yoke in the outside of rotor or the part of peripheral part and the first rotor unit linked up first magnetizes and uses magnetic circuit, make the magnetization magnetic flux on direction of principal axis, connect the ferromagnetic material of the first rotor unit, on direction of principal axis, magnetize the ferromagnetic material of the first rotor unit thus
What will comprise with yoke by the outside at rotor that the peripheral part of rotor core of the inboard of the part of the side of outside rotor iron core of second rotor unit or peripheral part and second rotor unit links up second magnetizes and uses magnetic circuit, make the magnetization magnetic flux on direction of principal axis, connect the ferromagnetic material of second rotor unit, on direction of principal axis, the ferromagnetic material of second rotor unit is magnetized to the direction opposite with the ferromagnetic material of the first rotor unit thus
First support in the outside by being configured in the first rotor unit and be configured in second support in the outside of second rotor unit rotates assemble rotor freely with guaranteeing the air gap stipulated with respect to stator.
According to above-mentioned second form because form permanent magnet at assemble rotor back magnetization ferromagnetic material, so in the assembling of rotor iron powder or dust can be attached to rotor on, assembling operation becomes easily, and can improve reliability.
In addition, have the magnetizer of yoke as described above, can suitably magnetize first, second rotor unit with opposite respectively polarity by use.
And then, have the magnetizer of yoke by use, with use utilized existing hollow coil magnetizer occasion relatively, can magnetize with little electric power.
In addition, the electric rotating machine of assembling and first homomorphosis, its effect is as described above, in the cost that can reduce electric rotating machine integral body, can suppress to carry out the assembling operation of stator easily because coiling is simplified in the generation of the vibration that causes of uneven torque, noise etc. simultaneously.
In second form, also same with above-mentioned first form, can magnetize simultaneously, time difference magnetization.
In addition, in above-mentioned first, second any one form, also can be when assemble rotor, between the first rotor unit and second rotor unit across electric conducting material.
HB formula permanent magnet rotating machine of the present invention is characterised in that, to have for realizing above-mentioned second purpose:
From the magnetic of polygon or ring-type is radial a plurality of main poles are set, on each main pole of the stator core that is formed with a plurality of inductors on the tip of each main pole, the coiling magnet exciting coil and constitute 2 mutually 4 main poles, 3 mutually 3 main poles or 5 mutually 5 main poles stator and
Making across electric conducting material is having a plurality of little teeth, departs from a circumferential direction and be clamped in the first rotor unit that the permanent magnet that magnetized on the direction of principal axis constitutes between two rotor cores of 1/2 tooth pitch configuration of little tooth and have with second rotor unit of this first rotor unit same structure and the permanent magnet that magnetized on opposite direction approaching on the outer peripheral face, and be fixed on the common rotational axis, make the position of the little tooth of approaching rotor core become identical and rotor that constitute
First, second support in the outside of rotor by being configured in first, second rotor unit is guaranteed with respect to stator core that the air gap ground of stipulating rotates and is supported freely.
According to above-mentioned structure, flow through eddy current because when the magnetization ferromagnetic material, be arranged in the discoid electric conducting materials such as epitrochanterian copper or aluminium, so reduced leakage magnetization magnetic flux to approaching the opposing party's rotor.Therefore, can access the structure of the electric rotating machine of the manufacture method that is fit to above-mentioned first, second form of the present invention of use.
Description of drawings
Fig. 1 is the skiagraph of stepping motor of manufacture method that is suitable for the HB formula permanent magnet rotating machine of first～the 4th embodiment of the present invention.
Fig. 2 is the front elevation of the relation of the rotor core of stepping motor of presentation graphs 1 and stator core.
Fig. 3 is the skiagraph of magnetizer in the manufacture method of the expression first embodiment of the present invention.
Fig. 4 is the skiagraph of magnetizer in the manufacture method of the expression second embodiment of the present invention.
Fig. 5 is the skiagraph of magnetizer in the manufacture method of the expression third embodiment of the present invention.
Fig. 6 is the skiagraph of magnetizer in the manufacture method of the expression fourth embodiment of the present invention.
Fig. 7 is the skiagraph of stepping motor of manufacture method that is suitable for the HB formula permanent magnet rotating machine of the 5th～the 9th embodiment of the present invention.
Fig. 8 is the skiagraph of magnetizer in the manufacture method of the expression fifth embodiment of the present invention.
Fig. 9 is the skiagraph of magnetizer in the manufacture method of the expression sixth embodiment of the present invention.
Figure 10 is the skiagraph of magnetizer in the manufacture method of the expression seventh embodiment of the present invention.
Figure 11 is the skiagraph of magnetizer in the manufacture method of the expression eighth embodiment of the present invention.
Figure 12 is the skiagraph of magnetizer in the manufacture method of the expression ninth embodiment of the present invention.
Figure 13 is the front elevation of magnetizer shown in Figure 12.
Figure 14 is the skiagraph of the hybrid type stepping motor of prior art.
Figure 15 is the front elevation of the relation of the rotor core of stepping motor of expression Figure 14 and stator core.
Embodiment
Below, 9 embodiment of the manufacture method of HB formula permanent magnet rotating machine of the present invention are described with reference to the accompanying drawings.
First embodiment～the 4th embodiment represents to make the method for disclosed electric rotating machine in No. 6781260 communiques of United States Patent (USP) having been carried out improved HB formula permanent magnet rotating machine of the present invention, and the 5th embodiment～the 9th embodiment represents to make the method that has with the HB formula permanent magnet rotating machine of the basic structure that disclosed electric rotating machine is identical in No. 6781260 communiques of United States Patent (USP).In addition, first form that first embodiment and the 5th embodiment are corresponding above-mentioned, second form that second embodiment and the 6th embodiment are corresponding above-mentioned.The 3rd embodiment and the 7th embodiment are the variation of first embodiment, the 5th embodiment, and the 4th embodiment and the 8th embodiment are the variation of second embodiment, the 6th embodiment.
The structure as the HB formula permanent magnet rotating machine (hereinafter referred to as stepping motor) of stepping motor of the manufacture method that is suitable for first embodiment～the 4th embodiment is described according to Fig. 1 and Fig. 2 at first.
Fig. 1 is the skiagraph of stepping motor, and Fig. 2 is the front elevation of inside of seeing the motor of Fig. 1 from the direction of rotation axis.But in Fig. 2, omitted the diagram of coil.
This stepping motor 1A is the HB stepping motor of the inner-rotor type that configuration HB type rotor 20 constitutes in the stator of being made up of the magnetic of 4 main poles structure 10.Stator 10 has the stator core 11 that 4 main pole 11a of A phase, B phase, A ' phase, B ' phase is constituted towards inboard radial configuration from approximate tetragonal magnetic as shown in Figure 2.On the point of the rotor 20 of facing each main pole 11a, be formed with a plurality of little tooth 11b respectively.In addition, as shown in Figure 1, on each main pole 11a, across the bobbin 15 coiling coils 14 of insulating material.4 coils that are wound on each main pole 11a are coupled together, make that oppositely excitation constitutes 2 phase coils respectively with the coil of the relative main pole of 180 degree.Thus, constitute the stator 10 of 2 phases, 4 main poles.With respect to 2 phase motor shown in Figure 14,15 are full main pole structures and have 8 main poles, and the 2 phase motor of embodiment are province's main pole (half main pole) structures, have 4 main poles.
On the other hand, rotor 20 as shown in Figure 1, constitute being clamped in the first rotor unit 20A that permanent magnet 23a that direction of principal axis magnetized constitutes between a pair of rotor core 21a, the 22a and between a pair of rotor core 21b, 22b, being clamped in the second rotor unit 20B that permanent magnet 23b that direction of principal axis magnetized constitutes equally, across being fixed on the common rotational axis 30 under the state of discoideus electric conducting material 24 adjacency.Each rotor core all is same size, same configuration. Permanent magnet 23a, 23b magnetize on opposite direction for direction of principal axis.For example, in this embodiment, the outside rotor iron core 21b of the outside rotor iron core 21a of the first rotor unit 20A and the second rotor unit 20B is magnetized to N polarity, inboard rotor core 22a and 22b are magnetized to S polarity.Each rotor core is made of the lamination silicon steel plate.
In addition, on rotor core 21a, form a plurality of little tooth 20T as shown in Figure 2 on the first-class tooth pitch of circumference ground.Other 3 rotor core 22a, 21b and 22b on form little tooth too.The 1/2 tooth pitch ground configuration that two rotor core 21a, the 22a of the first rotor unit 20A stagger little tooth 20T in a circumferential direction, same, the 1/2 tooth pitch ground configuration that rotor core 21b, the 22b of the second rotor unit 20B staggers little tooth 20T in a circumferential direction.Then, the rotor core 22b of the inboard of the rotor core 22a of inboard of the first rotor unit 20A and the second rotor unit 20B is set, it is identical that the position of little tooth 20T is become, thereby also become identical in the position of the intermedian denticle 20T of outside rotor iron core 21a, the 21b of each unit.
As electric conducting material 24, in Fig. 1, represented the occasion with the rotor core same diameter, but also can be littler than the diameter of rotor core, can use the discoid member or the scale copper that form the hole that connects rotation axis 30 in central authorities.Shape wishes it is circular, but also can be polygon.
The relation of the little tooth 20T of the little tooth 11b of the main pole 11a of stator core 11 and rotor core 21a, 22a, 21b, 22b is as follows.That is for example in excitation 1 phase only, the relative occasion of little tooth 11b of the little tooth 20T of rotor core 21a, the 21b of the N utmost point and the main pole 11a of the stator core that is geomagnetic into the S utmost point 11 of first phase, the little tooth 11b of main pole 11a of the stator core 11 of the 180 degree opposition sides that are geomagnetic into the N utmost point of first phase becomes little tooth 20T with rotor core 21a, the 21b of the N utmost point, and non-relative (tooth and ditch are relative, electric angle is the phase places of 180 degree) relation, become relative with the little tooth 20T of rotor core 22a, the 22b of the S utmost point.The little tooth 20T of the little tooth 11b of the stator main pole 11 of second phase that not be magnetized this moment and rotor core 21a, 21b, 22a, 22b becomes the phase relation of 90 degree.
By being separately positioned on the bearing 31,32 in the support 12,13, rotate the rotation axis 30 of supporting to be fixed with first, second rotor unit 20A, 20B freely.Thus, between the little tooth 20T of the little tooth 11b of the main pole 11a of stator core 11 and rotor core 21a, 22a, 21b, 22b, guarantee air gap, rotor 20 can be rotated together with rotation axis 30.
In addition, in the above description, rotor 20 shows as at direction of principal axis and the first rotor unit 20A (being made of 21a, 22a, 23a) and the second rotor unit 20B (being made of 21b, 22b, 23b), two group rotor unit are linked up and constitutes, use two permanent magnet 23a, 23b but also can show as, by rotor core 22a, the 22b of these two permanent magnet clampings with one with respect to the rotor core 21a that is positioned at their both sides of two, a special rotor formation of 21b tooth position deviation 1/2.Configuration electric conducting material 24 between rotor core 22a, the 22b of inboard.
By two group rotor unit are set like this, can eliminate the radially uneven electromagnetic force that combination took place by 4 main pole stators and existing HB type rotor (a group rotor unit is only arranged).That is the rotor 20 of the stepping motor 1A of embodiment because be boundary's left-right symmetric at direction of principal axis with the electric conductor 24 of central portion, works so the HB rotor that claims during as two is offset the couple of uneven electromagnetic force.Therefore have and offset all the time because the excellent results of the couple that radially uneven electromagnetic force produces.
In addition, in Fig. 1, Fig. 2, represent with 2 phase formulas, but be not limited thereto, can be province's main pole stator of 3 phase 3 main poles or 5 phases, 5 main poles and special rotor combination with two permanent magnets, constitute as 3 phases or 5 phase HB type stepping motors, also can in 2 phases or 3 brushless motors that equate or synchronous motor, use.
Below, the torque of having made up the occasion of above-mentioned rotor 20 in the stator of the stator 10 of 4 main poles of embodiment shown in Figure 2 and 8 main poles shown in Figure 14 is described.The torque T that can represent 1 phase with following formula (1)
1
T1＝NNriΦm (1)
Here, N is a coil turn, and Nr is the rotor number of teeth, and i is an electric current, and Φ m is the interlinkage flux of the coil of that send from rotor and magnetic flux permanent magnet.
Suppose that both line footpaths are identical, total number of turns Nt equates.The total magnetic flux of sending from rotor, (8 main poles are 8 * 6=48 for example to equal 48 in both number of teeth of stator, 4 main poles are occasions of 4 * 12=48), because can ignore both stator core the magnetic resistance difference and be approximately identical value Φ t, so respectively as N8, N4, Φ 8, Φ 4, following formula is set up the number of turn of each 1 main pole of 8 main pole machines, 4 main pole machines, magnetic flux.
Φ8＝Φt/8 (2)
Φ4＝Φt/4 (3)
N8＝Nt/8 (4)
N4＝Nt/4 (5)
According to (1)～(5) formula, torque T8, the T4 of 8 main pole machines, 4 main pole machines are as follows respectively.
T8＝2×4(Nt/8)Nri(Φt/8)
＝NtNriΦt/8 (6)
T4＝2×2(Nt/4)Nri(Φt/4)
＝NtNriΦt/4 (7)
According to (6), (7), 4 main pole machines are compared with the motor of existing 8 main pole machines, export about 2 times torque.
The rotor number of teeth Nr of the hope of the occasion of this 4 main pole derives from following formula.
90/Nr＝(-/+){(360/4)-360n/Nr} (8)
In the formula, n is the integer more than 1.
The step angle of representing this structure when the left side and the right of (8) formula if it is put in order, then can obtain (9) formula.
Nr＝4n±1 (9)
By satisfying formula (9), become the symmetric construction of 2 phases, 4 main poles.Nr=75 during n=19 for example is because (90/Nr) degree becomes step angle in 2 cameras, so can obtain the electric rotating machine of the stator of symmetric figure with 1.2 degree step angles.In addition, in the occasion of Nr=50,,, but can obtain the 2 phase stepping motors that step angle 1.8 is spent so stator is an asymmetrical shape because do not satisfy (9) formula.
Because the stator core of 2 phases, 4 main poles is 90 degree symmetries, so when the lamination silicon steel plate, can spend the each rotation 90 of the die-cut steel plate of punch press and carry out lamination.In the time can rotating stack, can eliminate the deviation of stack thickness, eliminate the magnetic direction of silicon steel plate, become good motor characteristic.
Below, the stepping motor 1A by embodiment uses two permanent magnets, with the prior art shown in Figure 14,15 2 mutually the stepping motor of a magnet of use of 8 main pole formulas illustrate with comparing and promptly use low etc. magnet also can obtain high torque.At 2 mutually in the stepping motor of 8 main poles of prior art, being relict flux density Br 1.3[T] rare earth element magnet (neodium magnet) of (tesla) uses as permanent magnet.Relative therewith, in the application's occasion, because be 24 main poles and two magnet are arranged mutually, so the relict flux density Br of magnet tries to achieve with following formula.
Br＝1.3[T]×(1/2)(3/2)(4/8)＝0.4875[T] (10)
1/2 of formula (10) be because with compare with the common HB type rotor that 8 main poles with the identical prior art of the excircle area of the rotor of a magnet excitation make up and roughly become 1/2, therefore the magnetic flux that produces from permanent magnet also can be half, the magnetic flux density of magnet also can be half if the area of magnet is identical, in addition, (3/2) be because the length of magnetic path of permanent magnet reduces by half thereby the magnetic permeability of iron core portion becomes about 2 times merely, but consider the reduction of the magnetic flux density of air gap or magnetic circuit, because torque and magnetic permeability is approximately 3/2 times.(4/8) means (4 main poles/8 main poles), draw torque and the main pole number is inversely proportional to from the relation of above-mentioned (6) formula and (7) formula.
Use the magnet of the value of the Br in should (10) formula can access and use Br to be 1.3[T] the torque of 8 main pole motor same degree of neodium magnet.The result of formula (10) is unanimous on the whole with the magnetic field analysis result with computer.
The value of Br in (10) formula of being somebody's turn to do is equivalent to ferrite lattice.Ferrite lattice is 0.5[T at Br], its demagnetization curve is being got in second quadrant of magnetic flux density for the coordinate vertical, that coercive force is level and is being become straight line under the situation about coercive force (confining force) Hcj=275KA/m, the magnetic capacity that adds the permanent magnet in the magnetic circuit as slope the straight line that has passed through initial point and the intersection point of demagnetization curve become operating point, but, set up so (6) formula is approximate because this operating point magnetic flux density is proportional with the Br of permanent magnet substantially.Ferrite lattice is compared very cheap with rare earth element magnet, though use two also cheap than neodium magnet.That is use 0.5[T] following magnet can access the torque of abundant practicality.So long as 0.5[T] following magnet, do not limit the ferrite sintered body magnet of dry type or wet type, also can be bonding (plastics) magnet of resin as adhesive.Limit in the medium quantity batch processing of ferrite sintered body magnet for example is that profile is about 2mm for 25mm thickness, than those thin words mostly occur greatly the cutting bad.Adopt bad solution of words cutting of binding magnet.
By making up 2 phase 4 main pole stators 10 and above-mentioned rotors 20 with two rotor units, by when suppressing uneven electromagnetic force, adopting 0.5[T] below low-grade permanent magnet, phase time also can access the torque that is equal to or doubles in the motor of the same size of the such rare earth element magnet of the neodymium sintered magnet of the employing of prior art high price or SmCo magnet.
Then, about the manufacture method, particularly magnetization method of the stepping motor 1A of the foregoing description, represent 4 embodiment.
First embodiment
In the manufacture method of the HB of first embodiment of the present invention formula permanent magnet rotating machine, coiling coil 14 constitutes stator 10 on the main pole 11a of each stator core 11, on rotation axis 30, be fixed on a pair of rotor core 21a, clip magnet material between the 22a (below use with magnetize after the identical symbol 23a of permanent magnet describe) the first rotor unit 20A, with at a pair of rotor core 21b, clip magnet material between the 22b (below use with magnetize after the identical symbol 23b of permanent magnet describe) the second rotor unit 20B and constitute rotor 20, by at first support 12 of the outside of the first rotor unit 20A configuration with at second support 13 of the outside of second rotor unit 20B configuration, rotate assemble rotor 20 freely with guaranteeing the air gap stipulated with respect to stator 10.Thus, under the state that ferromagnetic material is not magnetized, finish the structure of stepping motor 1A.This state is become assembly.
Then this assembly is installed on the magnetizer 50 as shown in Figure 3.Magnetizer 50 constitutes the rotation axis 30 of assembly is surrounded assembly as central shaft, can be by once setting just magnetize simultaneously two ferromagnetic material 23a, 23b.
Magnetizer 50 has discoid first yoke 51 and second yoke 52 that are formed with the hole that rotation axis 30 connected that is configured in axial both sides and the 3rd yoke 53 that is configured in the covering side between them.The flat section of the 3rd yoke 53 is the T font substantially, forms the stator core 11 of the tip of the projection 53a that stretches out to the inside from periphery contact assembly.Then, in the space between the projection 53a that is formed on first yoke 51 and the 3rd yoke 53, all sides form stair-stepping insulator bobbin 54 in making that first support 12 from direction of principal axis and peripheral direction and assembly is relative and disposing like that, the first usefulness coil 55 that magnetizes of reeling on this insulator bobbin 54.Equally, in the space between the projection 53a that is formed on second yoke 52 and the 3rd yoke 53, all sides form stair-stepping insulator bobbin 56 in making that second support 13 from direction of principal axis and peripheral direction and assembly is relative and disposing like that, the second usefulness coil 57 that magnetizes of reeling on this insulator bobbin 56.In addition, it is desirable to each yoke is formed by the high material of the saturation flux density as the pure iron.Also can use the silicon steel plate of lamination to form yoke.
By on above-mentioned magnetizer 50, assembly being installed, followingly magnetize with coil 55,57 energisings to first, second like that, form first, second and magnetize and use magnetic circuit, magnetize ferromagnetic material 23a, 23b.
The part of the rotation axis 30 that first magnetizes will comprise first support, 12 sides in the outside of assembly by first yoke 51 and the 3rd yoke 53 as magnetic with magnetic circuit and the peripheral part of stator core 11 link up and constitute.Suppose owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current produces and around magnetizing, form the closed-loop path with coil 55 with coil 55.Therefore, the part of this magnetization magnetic flux does not directly enter stator core 11 by ferromagnetic material 23a from rotor core 21a, returns first yoke 51 via the 3rd yoke 53.When the magnetization magnetic flux surpasses the saturation flux density (at the about 1.5[T of the occasion that is made of silicon steel plate]) of rotor core 21b, more than half magnetization magnetic flux connects ferromagnetic material 23a and arrives inboard rotor iron core 22a, from connecting stator core 11 here, return first yoke 51 via the 3rd yoke 53.That is, the magnetization magnetic flux connects first support 12 and the first rotor unit 20A at direction of principal axis, connect stator core 11 with respect to rotation axis 30 near normal ground, connect thus assembly axial cardinal principle half, the ferromagnetic material 23a of magnetization the first rotor unit 20A on direction of principal axis.
The part of the rotation axis 30 that second magnetizes will comprise second support, 13 sides in the outside of assembly by second yoke 52 and the 3rd yoke 53 as magnetic with magnetic circuit and the peripheral part of stator core 11 link up and constitute.Owing to a part that flows through the magnetization magnetic flux that magnetizing current takes place in magnetizing with coil 57 does not directly enter stator core 11 by ferromagnetic material 23b from rotor core 21b, return second yoke 52 via the 3rd yoke 53.On the other hand, more than half magnetization magnetic flux connects ferromagnetic material 23b and arrives inboard rotor core 22b, from connecting stator core 11 here, returns second yoke 52 via the 3rd yoke 53.That is, the magnetization magnetic flux connects second support 13 and the second rotor unit 20B at direction of principal axis, connect stator core 11 with respect to rotation axis 30 near normal ground, thus connect assembly axial remaining cardinal principle half, the ferromagnetic material 23b of the magnetization second rotor unit 20B on direction of principal axis.
In addition, because first magnetize magnetize with coil 55 and second with in the coil 57 mutually in opposite direction upper reaches overcurrent, so the ferromagnetic material 23b of the ferromagnetic material 23a of the first rotor unit 20A and the second rotor unit 20B magnetizes on opposite direction mutually about direction of principal axis.
Here, if first, second support 12,13 or bearing the 31, the 32nd, magnetic then connects the magnetization magnetic flux and can become greatly, but in an embodiment, these are nonmagnetic materials such as aluminium.Therefore, between yoke and ferromagnetic material, there is big gap.Therefore, fully arrive ferromagnetic material, first, second yoke 51,52 is designed, make to form outstanding part that magnetizing also is positioned on the periphery of this ledge with coil 55,57 in rotation axis 30 sides for making the magnetization magnetic flux cross such gap.Therefore, the section configuration of insulator bobbin 54,56 adopts the shape that the ladder difference is set in inside as shown in Figure 3.
In above-mentioned magnetizing handled, in the time will making sufficient magnetization magnetic flux pass through the ferromagnetic material 23a of the first rotor unit 20A, its part becomes leakage magnetic flux, in the occasion that does not have electric conducting material 24, connect rotor core 22b, ferromagnetic material 23b, the rotor core 21b of the second rotor unit 20B, ferromagnetic material 23b is with the magnetic opposite with the magnetic of hope, that is is magnetized in the direction identical with the permanent magnet 23a of the first rotor unit.But, the assembly of present embodiment is because exist electric conducting material 24 between two rotor units, so when this leakage magnetic flux arrives electric conducting material 24, in electric conducting material 24, produce eddy current and offset it, prevent that the ferromagnetic material of the second rotor unit 20B is magnetized on undesirable direction.
Equally, magnetic flux for the ferromagnetic material 23b that is used to magnetize the second rotor unit 20B, when leakage magnetic flux arrives electric conducting material 24, in electric conducting material 24, produce eddy current and offset it, prevent that the ferromagnetic material of the first rotor unit 20A from magnetizing on undesirable direction.
In the manufacture method of the first above-mentioned embodiment, magnetize as first, second and to use magnetic circuit, outside the yoke 51,52,53 of magnetizer 50, use rotor core 21a, 22a, 21b, 22b, stator core 11.Therefore magnetizing magnetic flux density can not be than the saturation flux density of rotor core or stator core (about 1.5[T in silicon steel plate]) greatly.Therefore, be about 1.2[T in order to magnetize relict flux density Br] the neodymium sintered magnet, magnetic flux deficiency sometimes, but be about 0.5[T in order to magnetize relict flux density Br] ferrite lattice, can access sufficient magnetic flux.Therefore, the magnetizer 50 that uses among first embodiment be suitable for as use ferrite lattice or with its with the device as the stepping motor 1A of the object of the present embodiment of permanent magnet such as the binding magnet of the relict flux density of degree.
Can magnetize the ferromagnetic material 23a of the first rotor unit 20A and the ferromagnetic material 23b of the second rotor unit 20B simultaneously, the time difference also can be set magnetizes.In any occasion, in magnetizing, flow through electric current with coil 55,57, make separately magnetize with magnetic circuit in flow through suitable magnetic flux.According to first embodiment, magnetize permanent magnet because can in stator 10, be assembled with under the state of rotor 20 of stepping motor 1A, so when assembling, there is not magnetic force, rotor is not attracted on the stator during assembling, assembling is easy, and does not adsorb iron powder or dust, can improve reliability.
In addition, in above-mentioned magnetizer 50, the 3rd yoke 53 is one things, but also can be divided into two-part parts use on the left and right directions in the drawings with rotation axis 30 vertical planes by merga pass.In this occasion,, wish to use pure iron as conjugated material.
Second embodiment
In the manufacture method of the HB of second embodiment of the present invention formula permanent magnet rotating machine, before installing to rotor set in the stator, after finishing the structure of rotor, be assembled into like that in the magnetizer rotor is following, the ferromagnetic material of the permanent magnet that constitutes rotor is partly magnetized.
That is as shown in Figure 4, the first rotor unit 20A that is fixed on clip magnet material 23a between a pair of rotor core 21a, the 22a on the rotation axis 30 and between a pair of rotor core 21b, 22b the second rotor unit 20B of clip magnet material 23b constitute rotor 20, this rotor 20 is installed in magnetization two ferromagnetic material 23a, 23b on the magnetizer 60, forms permanent magnet.
The magnetizer 60 of second embodiment has first yoke 61 cylindraceous and second yoke 62 that are formed with the hole that rotation axis 30 connected that are configured in axial both sides, be configured to around they periphery, the half section is roughly the 3rd yoke 63 and the 4th yoke 64 of U-shaped.In the space that is formed on the ring-type between first yoke 61 and the 3rd yoke 63, held being wound on first on the insulator bobbin 65 and magnetizing with coil 66.Equally, in the space that is formed on the ring-type between second yoke 62 and the 4th yoke 64, held being wound on second on the insulator bobbin 67 and magnetizing with coil 68.
The end face of the inboard of first yoke 61 forms stepped, makes from every side around rotation axis 30 and bearing 31, from the rotor core 21a of direction of principal axis contact the first rotor unit 20A.Equally, the end face of the inboard of second yoke 62 forms stepped, makes from centering on rotation axis 30 and bearing 32 on every side, contacts the rotor core 21b of the second rotor unit 20B from direction of principal axis.
The 3rd yoke 63 is close contact first yoke 61 in axial end, and is in the periphery of the rotor core 22a of the inboard of central side contact the first rotor unit 20A, perhaps right across clearance plane seldom.Equally, the 4th yoke 64 is close contact second yoke 62 in axial end, contacts the periphery of rotor core 22b of the inboard of the second rotor unit 20B at central side, and is perhaps right across clearance plane seldom.Hope forms each yoke by pure iron.
By rotor 20 is installed on above-mentioned magnetizer 60, magnetize with coil 66,68 energisings to first, second, form first, second and magnetize and use magnetic circuit, magnetize ferromagnetic material.
First magnetizes is used as the part of side of first yoke 61 of magnetic and the outside rotor iron core 21a that the 3rd yoke 63 will comprise the first rotor unit 20A and inboard rotor core 22a with magnetic circuit by the outside at rotor 20 peripheral part links up and constitutes.Owing in magnetizing, flowing through magnetization magnetic flux that magnetizing current takes place connects the first rotor unit 20A at direction of principal axis outside rotor iron core 21a, ferromagnetic material 23a with coil 66, arrive inboard rotor core 22a, from returning first yoke 61 via the 3rd yoke 63 here.Thus, magnetize the ferromagnetic material 23a of the first rotor unit 20A at direction of principal axis.
Second magnetizes is used as the part of side of second yoke 62 of magnetic and the outside rotor iron core 21b that the 4th yoke 64 will comprise the second rotor unit 20B and inboard rotor core 22b with magnetic circuit by the outside at rotor 20 peripheral part links up and constitutes.Owing in magnetizing, flowing through magnetization magnetic flux that magnetizing current takes place connects the second rotor unit 20B at direction of principal axis outside rotor iron core 21b, ferromagnetic material 23b with coil 68, arrive inboard rotor core 22b, from returning second yoke 62 via the 4th yoke 64 here.Thus, magnetize the ferromagnetic material 23b of the second rotor unit 20B at direction of principal axis.
In addition, because first magnetize magnetize with coil 66 and second with in the coil 68 mutually in opposite direction upper reaches overcurrent, so the ferromagnetic material 23b of the ferromagnetic material 23a of the first rotor unit 20A and the second rotor unit 20B magnetizes on opposite direction mutually about direction of principal axis.In addition, because be provided with electric conducting material 24, leakage magnetic flux is cancelled by the eddy current that takes place in electric conducting material 24, can prevent the ferromagnetic material of the leakage magnetic flux of side's coil to undesirable direction magnetization the opposing party.
Can magnetize the ferromagnetic material 23a of the first rotor unit 20A and the ferromagnetic material 23b of the second rotor unit 20B simultaneously, the time difference also can be set magnetizes.In any occasion, in magnetizing, flow through electric current with coil 66,68, make separately magnetize with magnetic circuit in flow through suitable magnetic flux.
The occasion that as first embodiment, in stator, magnetizes under the state of assemble rotor, because add magnetic circuit as the support of nonmagnetic material or bearing, stator core, so the gap is big, can not obtain being the about 1.2[T of relict flux density such as magnetization neodymium sintered magnet sometimes] the sufficient magnetic flux density of permanent magnet.In the method for second embodiment,, in magnetic circuit, do not add support or stator core, to rotor set so the gap is little because before installing on the stator.Because forming the saturation flux density of the pure iron of each yoke is 2.2[T] about, so even also can access sufficient magnetic flux density for the permanent magnet of magnetization neodymium sintered magnet etc.
As above-mentioned by magnetizer 60 magnetization ferromagnetic materials after, by at first support 12 of the first rotor unit 20A outside configuration and second support 13 that disposes in the second rotor unit 20B outside, guarantee that for stator 10 air gap of stipulating rotates assemble rotor 20 freely.Thus, finish stepping motor 1A.
In addition,, then can increase the first, the 3rd yoke 61,63, can be more prone to magnetization for changeing in the contact area of iron core 21a, 21b if before on the rotor 20 bearing 31,32 being installed, magnetize.
The 3rd embodiment
The manufacture method of the HB formula permanent magnet rotating machine of the third embodiment of the present invention is compared with the occasion of first embodiment, under finishing the state that rotor set is installed to the assembly in the stator, this point that magnetizes of magnet body that carries out rotor-side is identical, but uses magnetizer shown in Figure 5 70 these points different as magnetizer.
That is, coiling coil 14 constitutes stator 10 on stator core 11, the first rotor unit 20A that is fixed on clip magnet material 23a between a pair of rotor core 21a, the 22a on the rotation axis 30 and between a pair of rotor core 21b, 22b the second rotor unit 20B of clip magnet material 23b constitute rotor 20, first support 12 in the outside by being configured in the first rotor unit 20A and be configured in second support 13 in the outside of the second rotor unit 20B rotates assemble rotor 20 freely with guaranteeing the air gap stipulated with respect to stator 10.Thus, under the state that ferromagnetic material is not magnetized, finish the structure of stepping motor 1A.This state is called assembly.
Then this assembly is installed on the magnetizer 70 as shown in Figure 5.Magnetizer 70 constitute the rotation axis 30 of assembly as central shaft surround assembly axial cardinal principle half, can be by once setting the ferromagnetic material that magnetizes.Under this state, behind the ferromagnetic material 23a of the first rotor unit 20A that magnetizes, take out assemblies from magnetizer 70, make the direction of principal axis counter-rotating magnetizer 70 of packing into once more, the ferromagnetic material 23b of the second rotor unit 20B that magnetizes.
Half of the first rotor unit 20A side by assembly is installed on above-mentioned magnetizer 70 to magnetizing with coil 74 energisings, forms first and magnetizes and use magnetic circuit, magnetizes the ferromagnetic material 23a of the first rotor unit 20A.
The peripheral part that first magnetizes is used as the part of first yoke 71 of magnetic and the rotation axis 30 that second yoke 72 will comprise first support, 12 sides and stator core 11 by the outside at assembly with magnetic circuit links up and constitutes.Arrive inboard rotor core 22a from rotor core 21a by ferromagnetic material 23a owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place,, return first yoke 71 through second yoke 72 from connecting stator core 11 here with coil 74.That is, the magnetization magnetic flux connects first support 12 and the first rotor unit 20A at direction of principal axis, connect stator core 11 with respect to rotation axis 30 near normal ground, connect thus assembly axial cardinal principle half, at the ferromagnetic material 23a of direction of principal axis magnetization the first rotor unit 20A.
Then, assembly is taken out from magnetizer 70, the direction of principal axis counter-rotating is installed in the magnetizer 70 once more, and half back that the second rotor unit 20B side is installed is given and magnetized with coil 74 energisings, form second thus and magnetize and use magnetic circuit, magnetize the ferromagnetic material 23b of the second rotor unit 20B.
Second magnetizes is used as first yoke 71 of magnetic and the part of the rotation axis 30 that second yoke 72 will comprise second support, 13 sides and the peripheral part of stator core 11 with magnetic circuit by the outside at assembly and gets up to form continuously.Arrive inboard rotor core 22b from rotor core 21b by ferromagnetic material 23b owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place,, return first yoke 71 through second yoke 72 from connecting stator core 11 here with coil 74.That is, the magnetization magnetic flux connects second support 13 and the second rotor unit 20B at direction of principal axis, connect stator core 11 with respect to rotation axis 30 near normal ground, connect assembly axial cardinal principle half, magnetize the ferromagnetic material 23b of the second rotor unit 20B at direction of principal axis.
In addition, because when above-mentioned secondary magnetizes, assembly is reversed at direction of principal axis, even so identical in the sense of current that magnetizes with flowing in the coil 74, also can on about the opposite mutually direction of direction of principal axis, magnetize the ferromagnetic material 23a of the first rotor unit 20A and the ferromagnetic material 23b of the second rotor unit 20B.In addition, because be provided with electric conducting material 24, so can prevent that the leakage magnetic flux of a side coil from magnetizing the opposing party's ferromagnetic material to undesirable direction by the eddy currents counteract leakage magnetic flux that in electric conducting material 24, takes place.
Spended time is wanted in the magnetization of the magnetizer 70 of the 3rd embodiment, but magnetizing assembly can be done more small-sizedly than the occasion of Fig. 3.In addition, because can be only decide the axial thickness in the face of stator core 11 of second yoke 72 to a side ferromagnetic material as object, so can select material or the corresponding optimal value of thickness with ferromagnetic material.That is, in the magnetizer 50 of Fig. 3, because magnetize two ferromagnetic materials simultaneously with two coils, so the projection 53a of the 3rd yoke 53 as common magnetic circuit utilization, even the maximum thickness that also becomes stator core of the axial thickness of the magnetic circuit that can use for a ferromagnetic material 1/2.Relative therewith, in the magnetizer 70 of Fig. 5, because use each of magnetizing two ferromagnetic materials of a coil, so the axial thickness of the magnetic circuit that can use for a magnet in the part of the contact stator core 11 of second yoke 72 is defined unlike Fig. 3, can thickly reach the thickness of the thickness that equals stator core 11.Therefore, can set the thickness of yoke, the feasible magnetic resistance that necessitates according to the magnetic flux density corresponding with the material of ferromagnetic material.
The 4th embodiment
The manufacture method of the HB formula permanent magnet rotating machine of the fourth embodiment of the present invention is compared with the occasion of second embodiment, before installing to rotor set in the stator, this point that magnetizes of ferromagnetic material that carries out rotor is identical, but uses magnetizer shown in Figure 6 80 these points different as magnetizer.
Promptly, be fixed on the first rotor unit 20A that clips ferromagnetic material 23a between a pair of rotor core 21a, the 22a on the rotating shaft 80, between a pair of rotor core 21b, 22b, clipping the second rotor unit 20B of ferromagnetic material 23b and constitute rotor 20, this rotor 20 is installed in the magnetizer 80, magnetizes 2 ferromagnetic material 23a, 23b and become permanent magnet.
The magnetizer 80 of the 4th embodiment constitute with rotation axis 30 as central shaft surround rotor 20 axial cardinal principle half, can be by once setting the ferromagnetic material that magnetizes.Behind the ferromagnetic material 23a of the first rotor unit 20A that magnetizes under this state, take out rotor unit 20 from magnetizer 80, after making the direction of principal axis counter-rotating, be installed in the magnetizer 80 the ferromagnetic material 23b of the second rotor unit 20B that magnetizes once more.
The end face of the inboard of first yoke 81 from around around rotation axis 30 and bearing 31, form stepped and from the rotor core 21a of direction of principal axis contact the first rotor unit 20A.The end in second yoke 82 left side in axial figure is contact first yoke 81 closely, and the periphery of the rotor core 22a of the inboard of the end on right side contact the first rotor unit 20A is perhaps relative across gap seldom among the figure.It is desirable to form each yoke by pure iron.
Half of the first rotor unit 20A side by rotor 20 is installed on above-mentioned magnetizer 80 to magnetizing with coil 84 energisings, forms first and magnetizes and use magnetic circuit, magnetizes the ferromagnetic material 23a of the first rotor unit 20A.
First magnetizes is used as the part of side of first yoke 81 of magnetic and the outside rotor iron core 21a that second yoke 82 will comprise the first rotor unit 20A and inboard rotor core 22a with magnetic circuit by the outside at rotor 20 peripheral part links up and constitutes.Owing in magnetizing, flowing through magnetization magnetic flux that magnetizing current takes place connects the first rotor unit 20A at direction of principal axis outside rotor iron core 21a, ferromagnetic material 23a with coil 84, arrive inboard rotor core 22a, from returning first yoke 81 via second yoke 82 here.Thus, magnetize the ferromagnetic material 23a of the first rotor unit 20A at direction of principal axis.
Then rotor 20 is taken out from magnetizer 80, the direction of principal axis counter-rotating is installed in the magnetizer 80 once more, switch on coil 84 to magnetizing by half back that the second rotor unit 20B side is installed, formation second is magnetized and is used magnetic circuit, magnetizes the ferromagnetic material 23b of the second rotor unit 20B.
Second magnetizes is used as the part of side of first yoke 81 of magnetic and the outside rotor iron core 21b that second yoke 82 will comprise the second rotor unit 20B and inboard rotor core 22b with magnetic circuit by the outside at rotor 20 peripheral part links up and constitutes.Owing in magnetizing, flowing through magnetization magnetic flux that magnetizing current takes place connects the second rotor unit 20B at direction of principal axis outside rotor iron core 21b, ferromagnetic material 23b with coil 84, arrive inboard rotor core 22b, from returning first yoke 81 via second yoke 82 here.Thus, magnetize the ferromagnetic material 23b of the second rotor unit 20B at direction of principal axis.
In addition, because rotor 20 is reversed at direction of principal axis, even so identical in the sense of current that magnetizes with flowing in the coil 84, also can on about the opposite mutually direction of direction of principal axis, magnetize the ferromagnetic material 23a of the first rotor unit 20A and the ferromagnetic material 23b of the second rotor unit 20B.In addition, because be provided with electric conducting material 24, so can prevent that the leakage magnetic flux of a side coil from magnetizing the opposing party's ferromagnetic material to undesirable direction by the eddy currents counteract leakage magnetic flux that in electric conducting material 24, takes place.
After as described above by magnetizer 80 magnetization ferromagnetic materials,, rotate assemble rotor 20 freely by first support 12 and second support 13 with guaranteeing the air gap stipulated with respect to stator 10.Thus, finish stepping motor 1A.
The structure of the HB formula permanent magnet rotating machine (stepping motor) of the manufacture method that is suitable for the 5th embodiment～the 9th embodiment then, is described according to Fig. 7.Fig. 7 is the skiagraph of stepping motor 1B.No. 6781260 disclosed electric rotating machine of communique of the basic structure of this stepping motor 1B and United States Patent (USP) is identical.Because front elevation is identical with Fig. 2, so the diagram of omission.
This stepping motor 1B is the HB type stepping motor of the inner-rotor type that configuration HB type rotor 20C constitutes in the stator of being made up of the magnetic of 4 main poles structure 10.With the difference of stepping motor 1A shown in Figure 1 be the structure of rotor 20C.That is, the rotor 20C of stepping motor 1B is by left side beginning from figure, sequentially the first rotor iron core 21a, permanent magnet 23a, second rotor core 22, permanent magnet 23b, third trochanter iron core 21b constituted being fixed under the state of contact closely mutually on the rotation axis 30.The first rotor iron core 21a is identical with the thickness of third trochanter iron core 21b, the thickness that second rotor core 22 has the twice of the first rotor iron core 21a.On the periphery of each rotor core and shown in Figure 2ly similarly form a plurality of little teeth.
Each unit of above-mentioned rotor can be divided into two group rotor unit and consider.That is, the first rotor unit constitutes with axial half clamping permanent magnet 23a of the first rotor iron core 21a and second rotor core 22, and second rotor unit constitutes with remaining half clamping permanent magnet 23b of the third trochanter iron core 21b and second rotor core 22.In addition, on this rotor 20C, the stepping motor 1A that is not configured in Fig. 1 goes up the electric conducting material 24 of configuration.The stepping motor 1A of other structure and Fig. 1 is identical.
The stepping motor 1B of Fig. 7 and the stepping motor 1A of Fig. 1 are same, by two group rotor unit are set, can eliminate the uneven electromagnetic force radially that the combination by the HB type rotor (a group rotor unit is only arranged) of 4 main pole stators and prior art takes place.In addition, even use the little magnet of relict flux density such as ferrite lattice or binding magnet, also can obtain high torque.
The 5th embodiment
In the manufacture method of the HB of fifth embodiment of the present invention formula permanent magnet rotating machine, coiling coil 14 constitutes stator 10 on stator core 11, fixed rotor iron core 21a, 22,21b and ferromagnetic material 23a, 23b on rotation axis 30, constitute rotor 20C, by first support 12 and second support 13, rotate assemble rotor 20C freely with guaranteeing the air gap stipulated with respect to stator 10.Thus, under the state of unmagnetized ferromagnetic material, finish the structure of stepping motor 1B.This state is called assembly.
Then this assembly is installed in the magnetizer 50 as shown in Figure 8.Magnetizer 50 is with shown in Figure 3 identical.Magnetize with coil 55,57 energisings to first, second by assembly being installed in this magnetizer 50 back, form first, second and magnetize and use magnetic circuit, magnetize ferromagnetic material 23a, 23b.
The peripheral part that first magnetizes is used as the part of first yoke 51 of magnetic and the rotation axis 30 that the 3rd yoke 53 will comprise first support, 12 sides and stator core 11 by the outside at assembly with magnetic circuit links up and constitutes.Connect ferromagnetic material 23a from the first rotor iron core 21a and arrive second rotor core 22 owing in magnetizing, flowing through magnetization magnetic flux that magnetizing current takes place,, return first yoke 51 through the 3rd yoke 53 from connecting stator core 11 here with coil 55.Thus, magnetize the ferromagnetic material 23a of the first rotor unit at direction of principal axis.
The peripheral part that second magnetizes is used as the part of second yoke 52 of magnetic and the rotation axis 30 that the 3rd yoke 53 will comprise second support, 13 sides and stator core 11 by the outside at assembly with magnetic circuit links up and constitutes.Connect ferromagnetic material 23b from third trochanter iron core 21b and arrive second rotor core 22 owing in magnetizing, flowing through magnetization magnetic flux that magnetizing current takes place,, return second yoke 52 through the 3rd yoke 53 from connecting stator core 11 here with coil 57.Thus, magnetize the ferromagnetic material 23b of second rotor unit at direction of principal axis.
In addition, because first magnetize magnetize with coil 55 and second with in the coil 57 in opposite direction upper reaches overcurrent mutually, so the ferromagnetic material 23b of the ferromagnetic material 23a of the first rotor unit and second rotor unit is magnetized on opposite mutually direction about direction of principal axis.
The 6th embodiment
In the manufacture method of the HB of sixth embodiment of the present invention formula permanent magnet rotating machine, coiling coil 14 constitutes stator 10 on stator core 11, fixed rotor iron core 21a, 22,21b and ferromagnetic material 23a, 23b on rotation axis 30, constitute rotor 20C, but before being assembled into this rotor 20C in the stator 10, as shown in Figure 9, be installed on the magnetizer 60 and magnetize two ferromagnetic materials and form permanent magnets.
The magnetizer 60 of the 6th embodiment is with shown in Figure 4 identical.After rotor 20C is installed in this magnetizer 60, magnetize with coil 66,68 energisings, form first, second and magnetize and use magnetic circuit, magnetize ferromagnetic material 23a, 23b to first, second.
The peripheral part that first magnetizes is used as the part of first yoke 61 of magnetic and the side that the 3rd yoke 63 will comprise the first rotor iron core 21a and second rotor core 22 by the outside at rotor 20C with magnetic circuit links up and constitutes.Connect the first rotor iron core 21a, ferromagnetic material 23a owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place at direction of principal axis, arrive second rotor core 22, from returning first yoke 61 via the 3rd yoke 63 here with coil 66.Thus, magnetize the ferromagnetic material 23a of the first rotor unit at direction of principal axis.
The peripheral part that second magnetizes is used as the part of second yoke 62 of magnetic and the side that the 4th yoke 64 will comprise third trochanter iron core 21b and second rotor core 22 by the outside at rotor 20C with magnetic circuit links up and constitutes.Connect third trochanter iron core 21b, ferromagnetic material 23b owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place at direction of principal axis, arrive second rotor core 22, from returning second yoke 62 via the 4th yoke 64 here with coil 68.Thus, magnetize the ferromagnetic material 23b of second rotor unit at direction of principal axis.
In addition, because first magnetize magnetize with coil 66 and second with in the coil 68 in opposite direction upper reaches overcurrent mutually, so the ferromagnetic material 23b of the ferromagnetic material 23a of the first rotor unit 20A and the second rotor unit 20B is magnetized on opposite mutually direction about direction of principal axis.
As mentioned above, after by magnetizer 60 magnetization ferromagnetic materials,, guarantee with respect to stator 10 to walk around in the air gap ground of stipulating to move assemble rotor 20c freely by first support 12 and second support 13.Thus, finish stepping motor 1B.
In addition,, then can increase the contact area of the first, the 3rd yoke 61,63 and rotor core 21a, 21b, can be more prone to magnetization if before on the rotation axis 30 bearing 31,32 being installed, magnetize.
The 7th embodiment
In the manufacture method of the HB of seventh embodiment of the present invention formula permanent magnet rotating machine, coiling coil 14 constitutes stator 10 on stator core 11, fixed rotor iron core 21a, 22,21b and ferromagnetic material 23a, 23b on rotation axis 30, constitute rotor 20C, by first support 12 and second support 13, rotate assemble rotor 20C freely with guaranteeing the air gap stipulated with respect to stator 10.Thus, under the state of unmagnetized ferromagnetic material, finish the structure of stepping motor 1B.This state is called assembly.
Then this assembly is installed on the magnetizer 70 as shown in Figure 10.Magnetizer 70 is with shown in Figure 5 identical.Give and magnetize by half of the first rotor iron core 21a side of assembly being installed on this magnetizer 70 back, form first and magnetize and use magnetic circuit, magnetize the ferromagnetic material 23a of the first rotor unit with coil 74 energisings.
The peripheral part that first magnetizes is used as the part of first yoke 71 of magnetic and the rotation axis 30 that second yoke 72 will comprise first support, 12 sides and stator core 11 by the outside at assembly with magnetic circuit links up and constitutes.Arrive second rotor core 22 from the first rotor iron core 21a by ferromagnetic material 23a owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place,, return first yoke 71 through second yoke 72 from connecting stator core 11 here with coil 74.Thus, magnetize the ferromagnetic material 23a of the first rotor unit at direction of principal axis.
Then assembly is taken out from magnetizer 70, the direction of principal axis counter-rotating is installed in the magnetizer 70 once more, and give in half back that third trochanter iron core 21b side is installed and to magnetize with coil 74 energisings, form second thus and magnetize and use magnetic circuit, magnetize the ferromagnetic material 23b of second rotor unit.
The peripheral part that second magnetizes is used as the part of first yoke 71 of magnetic and the rotation axis 30 that second yoke 72 will comprise second support, 13 sides and stator core 11 by the outside at assembly with magnetic circuit links up and constitutes.Arrive second rotor core 22 from third trochanter iron core 21b by ferromagnetic material 23b owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place,, return first yoke 71 through second yoke 72 from connecting stator core 11 here with coil 74.Thus, magnetize the ferromagnetic material 23b of second rotor unit at direction of principal axis.
In addition, because when above-mentioned secondary magnetizes, assembly is reversed at direction of principal axis, even so identical in the sense of current that magnetizes with flowing in the coil 74, also can on about the opposite mutually direction of direction of principal axis, magnetize the ferromagnetic material 23a of the first rotor unit and the ferromagnetic material 23b of second rotor unit.
The 8th embodiment
In the manufacture method of the HB of eighth embodiment of the present invention formula permanent magnet rotating machine, coiling coil 14 constitutes stator 10 on stator core 11, fixed rotor iron core 21a, 22,21b and ferromagnetic material 23a, 23b on rotation axis 30, constitute rotor 20C, but before being assembled into this rotor 20C in the stator 10, as shown in figure 11, be installed on the magnetizer 80 and magnetize two ferromagnetic materials and form permanent magnet.
The magnetizer 80 of the 8th embodiment is with shown in Figure 6 identical.Give and magnetize by half of the first rotor iron core 21a side being installed on this magnetizer 80 back, form first and magnetize and use magnetic circuit, magnetize the ferromagnetic material 23a of the first rotor unit with coil 84 energisings.
The peripheral part that first magnetizes is used as the part of first yoke 81 of magnetic and the side that second yoke 82 will comprise the first rotor iron core 21a and second rotor core 22 by the outside at rotor 20C with magnetic circuit links up and constitutes.Connect the first rotor iron core 21a, ferromagnetic material 23a owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place at direction of principal axis, arrive second rotor core 22, from returning first yoke 81 via second yoke 82 here with coil 84.Thus, magnetize the ferromagnetic material 23a of the first rotor unit at direction of principal axis.
Then rotor 20C is taken out from magnetizer 80, the direction of principal axis counter-rotating is installed in the magnetizer 80 once more, and give in half back that third trochanter iron core 21b side is installed and to magnetize with coil 84 energisings, form second thus and magnetize and use magnetic circuit, magnetize the ferromagnetic material 23b of second rotor unit.
The peripheral part that second magnetizes is used as the part of first yoke 81 of magnetic and the side that second yoke 82 will comprise third trochanter iron core 21b and second rotor core 22 by the outside at rotor 20C with magnetic circuit links up and constitutes.Connect third trochanter iron core 21b, ferromagnetic material 23b owing in magnetizing, flowing through the magnetization magnetic flux that magnetizing current takes place at direction of principal axis, arrive second rotor core 22, from returning first yoke 81 via second yoke 82 here with coil 84.Thus, magnetize the ferromagnetic material 23b of second rotor unit at direction of principal axis.
In addition, because above-mentioned secondary makes rotor 20C reverse at direction of principal axis when magnetizing, even, also can on mutually opposite direction, magnetize the ferromagnetic material 23a of the first rotor unit and the ferromagnetic material 23b of second rotor unit about direction of principal axis so it is identical to flow through the sense of current that magnetizes with coil 84.
After as described above by magnetizer 80 magnetization ferromagnetic materials,, rotate assemble rotor 20C freely by first support 12 and second support 13 with guaranteeing the air gap stipulated with respect to stator 10.Thus, finish stepping motor 1B.
In addition,, then can increase the contact area of first yoke 81 and rotor core 21a, 21b, can be more prone to magnetization if before on the rotation axis 30 bearing 31,32 being installed, magnetize.
The 9th embodiment
In the manufacture method of the HB of ninth embodiment of the present invention formula permanent magnet rotating machine, coiling coil 14 constitutes stator 10 on stator core 11, fixed rotor iron core 21a, 22,21b and ferromagnetic material 23a, 23b on rotation axis 30, constitute rotor 20C, by first support 12 and second support 13, rotate assemble rotor 20C freely with guaranteeing the air gap stipulated with respect to stator 10.Thus, under the state of unmagnetized ferromagnetic material, finish the structure of stepping motor 1B.This state is called assembly.
Then, this assembly is installed on the magnetizer 90 as shown in Figure 12.Magnetizer 90 constitute assembly with rotation axis 30 as central shaft surround assembly axial cardinal principle half, can be by once setting the ferromagnetic material that magnetizes.Behind the side's of magnetizing under this state ferromagnetic material 23a, take out assembly from magnetizer 90, on direction of principal axis, make its counter-rotating be installed in the magnetizer 90 the opposing party's of magnetizing ferromagnetic material 23b once more.
In addition, Figure 13 is illustrated in the example of the 8 coil magnetizers that reeling on 8 main poles magnetizes uses coil, but the shape at motor is foursquare occasion, the 4 coil magnetizers that making on 4 main poles reels magnetizes with coil are simple, also can determine suitable a plurality of main poles according to the shape of motor.
It is desirable to form each yoke with pure iron.
Half back of the first rotor iron core 21a side by assembly is installed on this magnetizer 90 is given and is magnetized with coil 94 energisings, forms first and magnetizes and use magnetic circuit, magnetizes the ferromagnetic material 23a of the first rotor unit.
The peripheral part that first magnetizes is used as the part of first yoke 91 of magnetic and the rotation axis 30 that second yoke 92 will comprise first support, 12 sides and stator core 11 by the outside at assembly with magnetic circuit links up and constitutes.Owing in magnetizing, flow through with coil 94 magnetization magnetic flux that magnetizing current takes place from second yoke 92 by first yoke 91, arrive second rotor core 22 from the first rotor iron core 21a by ferromagnetic material 23a, from connecting stator core 11 here, return second yoke 92.Thus, magnetize the ferromagnetic material 23a of the first rotor unit at direction of principal axis.
Then, assembly is taken out from magnetizer 90, and reversing on direction of principal axis is installed in the magnetizer 90 once more, gives in half back that third trochanter iron core 21b side is installed to magnetize with coil 94 energisings, formation second is magnetized and is used magnetic circuit, magnetizes the ferromagnetic material 23b of second rotor unit.
The peripheral part that second magnetizes is used as the part of first yoke 91 of magnetic and the rotation axis 30 that second yoke 92 will comprise second support, 13 sides and stator core 11 by the outside at assembly with magnetic circuit links up and constitutes.Owing in magnetizing, flow through with coil 94 magnetization magnetic flux that magnetizing current takes place from second yoke 92 by first yoke 91, arrive second rotor core 22 from third trochanter iron core 21b by ferromagnetic material 23b, from connecting stator core 11 here, return second yoke 92.Thus, magnetize the ferromagnetic material 23b of second rotor unit at direction of principal axis.
In addition, because when above-mentioned secondary magnetizes, assembly is reversed at direction of principal axis, even so identical in the sense of current that magnetizes with flowing in the coil 94, also can on about the opposite mutually direction of direction of principal axis, magnetize the ferromagnetic material 23a of the first rotor unit and the ferromagnetic material 23b of second rotor unit.
Any one of the magnetizer of first～the 8th embodiment to magnetize with coil all be that rotation axis with motor is the ring-type at center, but magnetizing of the 9th embodiment reeled around vertical radial main pole with respect to rotation axis with coil.In addition, in the magnetizer 90 of the 9th embodiment, also can be provided with simultaneously is the coil of the ring-type at center with the rotation axis as other embodiment, and connects or in parallel with the coil on being arranged on main pole.
Because magnetized electric rotating machine uses cheap magnet and exports high torque by the present invention, so for purposes as the photocopier person of one-tenth printer of OA equipment, the motor of cheap high torque (HT) can be provided, because it is big that air gap also can become, so become the actuator of low vibration, in the big contribution of industrial expectation.In addition, also expect very much application for Medical Devices, FA equipment, robot, game machine, residential equipment machine.
In addition, in each above-mentioned embodiment, the section configuration of stator core is roughly quadrangle, but can be other polygon, and for example hexagon or octagon also can be annulars.
In addition, each above-mentioned embodiment is illustrated the inner-rotor type stepping motor as object, still for the stepping motor of outer-rotor type, also can similarly magnetize with each embodiment.As the occasion that magnetizes after the outer-rotor type stepping motor assembling, with vertical end face of the rotation axis of rotor and the outer peripheral face parallel with rotation axis between form magnetic circuit.Because the permanent magnet of rotor is positioned at outer circumferential side,,, also can carry out powerful magnetization even magnetize as the laggard row of motor assembling so stator does not enter between magnetic circuit.
Claims (9)
1. the manufacture method of a HB formula permanent magnet rotating machine is characterized in that:
From the magnetic of polygon or ring-type a plurality of main poles are set radially, on each main pole of the stator core that is formed with a plurality of inductors on the tip, coiling magnet exciting coil and constitute 24 main poles, 3,3 main poles or 5 stators of 5 main poles mutually mutually mutually,
A plurality of little teeth being arranged and on the outer peripheral face in the stagger clip magnet material constitutes between two rotor cores of 1/2 tooth pitch ground configuration of little tooth the first rotor unit and be fixed on the common rotational axis of circumferencial direction with second rotor unit of this first rotor unit same structure, make that the position of little tooth of approaching rotor core is identical, and the formation rotor
First support in the outside by being configured in described the first rotor unit and be configured in second support in the outside of described second rotor unit is guaranteed with respect to described stator that the air gap ground of stipulating rotates and is assembled described rotor freely,
First magnetize and use magnetic circuit by what the peripheral part that uses yoke will comprise the part of described rotation axis of described first bracket side and described stator core in the outside of assembly linked up, make the magnetization magnetic flux connect described first support and described the first rotor unit at direction of principal axis, and with respect to the described stator core of described rotation axis near normal ground perforation, connect the axial only about half of of described assembly thus, magnetize the ferromagnetic material of described the first rotor unit at direction of principal axis
Second magnetize and use magnetic circuit by what the peripheral part that uses yoke will comprise the part of described rotation axis of described second bracket side and described stator core in the outside of assembly linked up, make the magnetization magnetic flux connect described second support and described second rotor unit at direction of principal axis, and with respect to the described stator core of described rotation axis near normal ground perforation, connect the axial remaining only about half of of described assembly thus, on direction of principal axis, magnetize the ferromagnetic material of described second rotor unit in the direction opposite with the ferromagnetic material of above-mentioned the first rotor unit.
2. the manufacture method of HB formula permanent magnet rotating machine according to claim 1, it is characterized in that: use to have described first simultaneously and magnetize, magnetize the ferromagnetic material of described the first rotor unit and the ferromagnetic material of described second rotor unit simultaneously with the magnetize magnetizer of usefulness magnetic circuit of magnetic circuit and described second.
3. the manufacture method of HB formula permanent magnet rotating machine according to claim 1, it is characterized in that: only have described first and magnetize using with a magnetize side the magnetizer of usefulness magnetic circuit of magnetic circuit and described second, after magnetizing the ferromagnetic material of described the first rotor unit, described thin dress body is taken out from described magnetizer, be arranged on once more in the described magnetizer after on direction of principal axis, making its counter-rotating, magnetize the ferromagnetic material of described second rotor unit.
4. the manufacture method of a HB formula permanent magnet rotating machine is characterized in that:
From the magnetic of polygon or ring-type a plurality of main poles are set radially, on each main pole of the stator core that is formed with a plurality of inductors on the tip, the coiling magnet exciting coil constitutes 2 phases, 4 main poles, 3 phase 3 main poles or 5 stator of 5 main poles mutually,
A plurality of little teeth are arranged on the outer peripheral face and two rotor cores of the 1/2 tooth pitch ground configuration of the little tooth that staggers in a circumferential direction between clip magnet material formation the first rotor unit and be fixed on the common rotational axis with second rotor unit of this first rotor unit same structure, make that the position of little tooth of approaching rotor core is identical, and the formation rotor
First magnetize and use magnetic circuit by what the peripheral part of rotor core that uses yoke will comprise the inboard of the part of the side of outside rotor iron core of described the first rotor unit or peripheral part and described the first rotor unit in the outside of described rotor linked up, make the magnetization magnetic flux connect the ferromagnetic material of described the first rotor unit at direction of principal axis, magnetize the ferromagnetic material of described the first rotor unit thus at direction of principal axis
Second magnetize and use magnetic circuit by what the peripheral part of rotor core that uses yoke will comprise the inboard of the part of the side of outside rotor iron core of described second rotor unit or peripheral part and described second rotor unit in the outside of rotor linked up, make the magnetization magnetic flux connect the ferromagnetic material of described second rotor unit at direction of principal axis, on direction of principal axis, magnetize the ferromagnetic material of described second rotor unit thus in the direction opposite with the ferromagnetic material of described the first rotor unit
First support in the outside by being configured in described the first rotor unit and be configured in second support in the outside of described second rotor unit guarantees that with respect to described stator the air gap ground rotation of stipulating assembles described rotor freely.
5. the manufacture method of HB formula permanent magnet rotating machine according to claim 4, it is characterized in that: use to have described first simultaneously and magnetize, magnetize the ferromagnetic material of described the first rotor unit and the ferromagnetic material of described second rotor unit simultaneously with the magnetize magnetizer of usefulness magnetic circuit of magnetic circuit and described second.
6. the manufacture method of HB formula permanent magnet rotating machine according to claim 4, it is characterized in that: only have described first and magnetize using with a magnetize side the magnetizer of usefulness magnetic circuit of magnetic circuit and described second, after magnetizing the ferromagnetic material of described the first rotor unit, change in from described magnetizer, taking out described, it is set in the described magnetizer after the direction of principal axis counter-rotating once more, magnetizes the ferromagnetic material of described second rotor unit.
7. according to the manufacture method of any one described HB formula permanent magnet rotating machine in the claim 1～6, it is characterized in that: when the described rotor of assembling, between described the first rotor unit and described second rotor unit, have electric conducting material.
8. HB formula permanent magnet rotating machine is characterized in that comprising:
From the magnetic of polygon or ring-type a plurality of main poles are set radially, on each main pole of the stator core that is formed with a plurality of inductors on the tip, 2 phases, 4 main poles that the coiling magnet exciting coil constitutes, 3 phase 3 main poles or 5 are the stator of 5 main poles mutually;
Across electric conducting material, make a plurality of little teeth are arranged on the outer peripheral face and between circumferencial direction staggers two rotor cores of 1/2 tooth pitch ground configuration of little tooth, be clamped in the permanent magnet that direction of principal axis magnetized and the first rotor unit that constitutes and have with this first rotor unit same structure and in magnetic reversal second rotor unit of permanent magnet approaching, and be fixed on the common rotational axis, make the position of little tooth of rotor core of inboard of described first, second rotor unit become identical rotor, wherein
First, second support in the outside of described rotor by being configured in described first, second rotor unit is guaranteed with respect to described stator core that the air gap ground of stipulating rotates and is supported freely.
9. HB formula permanent magnet rotating machine according to claim 8, it is characterized in that: described electric conducting material forms discoid with copper or aluminium.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006052907A JP2007236073A (en) | 2006-02-28 | 2006-02-28 | Hybrid rotary electric machine |
| JP2006052907 | 2006-02-28 | ||
| JP2006-052907 | 2006-02-28 | ||
| JP2006266227 | 2006-09-29 | ||
| JP2006266227A JP5128800B2 (en) | 2006-09-29 | 2006-09-29 | Hybrid permanent magnet rotating electric machine |
| JP2006-266227 | 2006-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101064464A true CN101064464A (en) | 2007-10-31 |
| CN101064464B CN101064464B (en) | 2011-02-09 |
Family
ID=38556095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101097875A Expired - Fee Related CN101064464B (en) | 2006-02-28 | 2007-02-27 | Hybrid permanent magnet type electric rotating machine and manufacturing method thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007236073A (en) |
| CN (1) | CN101064464B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752980A (en) * | 2008-12-02 | 2010-06-23 | 日本电产伺服有限公司 | Permanent-magnet rotary electric machine |
| CN102855203A (en) * | 2011-06-27 | 2013-01-02 | 佳能株式会社 | Image forming apparatus and processing method therefor |
| CN102904413A (en) * | 2011-07-29 | 2013-01-30 | 信浓绢糸株式会社 | Hybrid stepping motor |
| CN102904403A (en) * | 2011-07-29 | 2013-01-30 | 信浓绢糸株式会社 | Mixed type stepping motor |
| CN102957298A (en) * | 2011-08-27 | 2013-03-06 | 日本电产伺服有限公司 | Hybrid rotary electrical machine |
| CN109309416A (en) * | 2017-07-26 | 2019-02-05 | 发那科株式会社 | Rotor and rotating electric machine |
| CN109660052A (en) * | 2017-10-10 | 2019-04-19 | 零意技术有限责任公司 | Motor stator cooling system and method |
| CN110943594A (en) * | 2018-09-25 | 2020-03-31 | 日本电产伺服有限公司 | Hybrid stepping motor |
| CN111384797A (en) * | 2018-12-26 | 2020-07-07 | 丰田自动车株式会社 | Stator and motor |
| CN111756211A (en) * | 2019-03-28 | 2020-10-09 | Ghsp公司 | Hybrid stepping motor for adjusting rotor magnetic field by using axial coil |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4677026B2 (en) * | 2008-12-02 | 2011-04-27 | 日本電産サーボ株式会社 | Hybrid two-phase permanent magnet rotating electric machine |
| JP5179462B2 (en) * | 2009-11-25 | 2013-04-10 | 日本電産サーボ株式会社 | Two-phase hybrid electric rotating machine and method for manufacturing the same |
| JP6668443B1 (en) * | 2018-10-30 | 2020-03-18 | 株式会社旭エンジニアリング | 2-phase hollow stepping motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US541020A (en) * | 1895-06-11 | Daniel w | ||
| JPH03195343A (en) * | 1989-12-22 | 1991-08-26 | Shibaura Eng Works Co Ltd | Magnetizer for step motor |
| JPH08266033A (en) * | 1995-03-23 | 1996-10-11 | Hitachi Ltd | Stepping motor equipped with magnetizer, and method of incorporating its rotor |
| JP2000232757A (en) * | 1999-02-10 | 2000-08-22 | Toshiba Corp | Magnetization method for motor for compressor |
| JP3762981B2 (en) * | 2001-10-16 | 2006-04-05 | 日本サーボ株式会社 | Permanent magnet rotating electric machine |
-
2006
- 2006-02-28 JP JP2006052907A patent/JP2007236073A/en active Pending
-
2007
- 2007-02-27 CN CN2007101097875A patent/CN101064464B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752980A (en) * | 2008-12-02 | 2010-06-23 | 日本电产伺服有限公司 | Permanent-magnet rotary electric machine |
| CN101752980B (en) * | 2008-12-02 | 2012-11-07 | 日本电产伺服有限公司 | Permanent-magnet rotary electric machine |
| CN102855203A (en) * | 2011-06-27 | 2013-01-02 | 佳能株式会社 | Image forming apparatus and processing method therefor |
| US9274981B2 (en) | 2011-06-27 | 2016-03-01 | Canon Kabushiki Kaisha | Forming apparatus and processing method to request configuration data from a management apparatus in predetermined transition state |
| CN102855203B (en) * | 2011-06-27 | 2016-08-03 | 佳能株式会社 | Image forming apparatus and processing method thereof |
| CN102904413A (en) * | 2011-07-29 | 2013-01-30 | 信浓绢糸株式会社 | Hybrid stepping motor |
| CN102904403A (en) * | 2011-07-29 | 2013-01-30 | 信浓绢糸株式会社 | Mixed type stepping motor |
| CN102957298A (en) * | 2011-08-27 | 2013-03-06 | 日本电产伺服有限公司 | Hybrid rotary electrical machine |
| CN109309416A (en) * | 2017-07-26 | 2019-02-05 | 发那科株式会社 | Rotor and rotating electric machine |
| CN109309416B (en) * | 2017-07-26 | 2020-12-25 | 发那科株式会社 | Rotor and rotating electrical machine |
| CN109660052A (en) * | 2017-10-10 | 2019-04-19 | 零意技术有限责任公司 | Motor stator cooling system and method |
| US11342803B2 (en) | 2017-10-10 | 2022-05-24 | Zero E Technologies, Llc | Electric machine cooling systems and methods |
| CN109660052B (en) * | 2017-10-10 | 2023-03-14 | 零意技术有限责任公司 | Electric machine stator cooling system and method |
| US11764627B2 (en) | 2017-10-10 | 2023-09-19 | Zero-E Technologies | Electric machine cooling systems and methods |
| CN110943594A (en) * | 2018-09-25 | 2020-03-31 | 日本电产伺服有限公司 | Hybrid stepping motor |
| CN111384797A (en) * | 2018-12-26 | 2020-07-07 | 丰田自动车株式会社 | Stator and motor |
| CN111756211A (en) * | 2019-03-28 | 2020-10-09 | Ghsp公司 | Hybrid stepping motor for adjusting rotor magnetic field by using axial coil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101064464B (en) | 2011-02-09 |
| JP2007236073A (en) | 2007-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101064464A (en) | Hybrid permanent magnet type electric rotating machine and manufacturing method thereof | |
| CN1064786C (en) | DC brushless motor and control unit | |
| CN1229904C (en) | Permanent-magnet magnetic resistance electric rotating machinery | |
| CN1210860C (en) | Permanent magnet synchronous motor | |
| CN1077347C (en) | Self-starting brushless electric motor | |
| CN1028273C (en) | Motor or alternator | |
| CN1060892C (en) | Rotor of electric moto used in compressor | |
| CN1586031A (en) | Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same | |
| CN1689213A (en) | Permanent magnet for motor, motor and magnetizing method | |
| CN1133259C (en) | Motor using internal permanent magnet rotor and apparatur driving unit adapting said motor | |
| CN1215634C (en) | Brushless motor | |
| US8593029B2 (en) | Lundell type rotating machine | |
| CN1956293A (en) | Method and apparatus for assembling a permanent magnet pole assembly | |
| CN1537354A (en) | Brushless motor using vernier structure | |
| CN1870399A (en) | Stepping motor for generating vibration | |
| CN1302489C (en) | Radial anisotropic sintered magnet, its production method, and rotor and motor therewith | |
| CN1820403A (en) | Motor | |
| CN1518188A (en) | Reluctance motor and magnet of stator for reluctance motor | |
| CN101051783A (en) | Integrated stator, motor and method of making the same | |
| CN1808861A (en) | Rotating electric machine | |
| CN1667922A (en) | Ac motor having stator windings formed as loop coils, and control apparatus for the motor | |
| CN1289169A (en) | Permanent magnetic step-by-step motor | |
| CN1606220A (en) | Multi-polar rotary machine | |
| CN1496602A (en) | Magnetic motor | |
| JP2002354780A (en) | Cylindrical magnetic field liner motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |