CN102710033A - Motor external stator with adjustable inner diameter and manufacturing method of motor external stator - Google Patents
Motor external stator with adjustable inner diameter and manufacturing method of motor external stator Download PDFInfo
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- CN102710033A CN102710033A CN2012101453279A CN201210145327A CN102710033A CN 102710033 A CN102710033 A CN 102710033A CN 2012101453279 A CN2012101453279 A CN 2012101453279A CN 201210145327 A CN201210145327 A CN 201210145327A CN 102710033 A CN102710033 A CN 102710033A
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Abstract
The invention discloses a motor external stator with adjustable inner diameter, which is characterized in that the stator core is formed by superposing a plurality of annular stator core stampings with integral structures; tooth sheets of the stator core stampings are correspondingly superposed to form unit tooth blocks of the stator core; a connected body of the stator core stampings are correspondingly superposed to form a connecting part among the unit tooth blocks; a major yoke part of the stator core is formed on the tooth root part of the unit tooth blocks; a secondary yoke part of the stator core is formed by bending the connecting part into ear shape; and the peripheral surface of the stator core is in close fit with a strap to form the whole structure of the motor external stator. According to the motor external stator with adjustable inner diameter, the winding difficulty is reduced; the diameter of the motor stator can be changed by controlling the contraction degree of the stator core by changing the inner diameter of the strap and the size of cushion block so as to be suitable for the rotors with different diameters, and the production cost of the motor is greatly reduced.
Description
Technical field
The present invention relates to the motor external stator, particularly a kind of adjustable motor external stator of internal diameter and manufacturing approach thereof that realizes the mechanization winding.
Background technology
The great majority unshakable in one's determination of tradition external stator motor all are to use the folded riveting of whole circular punching material to form, and use the stator core of this manufacturing process manufacturing and stator to have following problem:
1, circular iron-core lamination stock utilization is low, generally is no more than 30%.
2, like Fig. 1, shown in Figure 2, the notch a1 opening of stator core is big, but copper factor is low.Use the sonde-type coil winding machine to produce; Because coiling probe will leave the space of self process when in groove a, moving; Therefore copper factor can not be De Taigao, and owing to will give coiling probe headspace, a1 is bigger for the core slots opening; The torque pulsation that this can cause motor influences motor performance.
Among disclosed among the CN1178410 " manufacturing approach unshakable in one's determination of electric rotary machine is with unshakable in one's determination ", the CN1391330 disclosed " core device ", it is low to have solved traditional external stator motor stator-core punching utilance, and copper factor is low, the problem that the notch opening is big.It is built up a plurality of independent stack of laminations through some splicing sheets unshakable in one's determination, directly copper cash is wound on the independent stack of lamination then, each stack of lamination is coupled together form the stator core overall structure again.Though the stator core of this assembled piece type structure has solved the coiling problem, not enough below existing:
1, complex structure.Because motor external stator iron core is some amalgamations structures together, each winding and stack of lamination are the construction units that is separated from each other in the amalgamation process, and piecemeal is more, is unfavorable for the operation field handling of goods and materials.
2, connect the lead difficulty.The lead of every stator core all has independently the end of a thread, and it is very time-consuming to connect lead, and because the lead jointing increases, has reduced the reliability that motor is electrically connected.
3, fastening after the amalgamation, typing difficulty.A plurality of stack of laminations splicing and when being fixed into the annular stator body; The connection that utilizes its two ends to be provided with between the adjacent stack of lamination forms connection with protruding, recess, or the annular pressing plate that installs additional through the stator both ends of the surface and the screw (rivet) that passes the pre-manufactured hole on the annular pressing plate carry out connection between the adjacent stack of lamination and fastening.
4, the stator structure that connects with the securing member connection of protruding, recess or lower end unshakable in one's determination of above-mentioned utilization closely contacts each stator core; The closed fully magnetic circuit that forms; For the motor of (the requiring rear of core must reserve slit) that stator core had specific (special) requirements, be inapplicable at a distance from magnetic or heat radiation.
In addition, in the prior motor external stator moulding scheme, the diameter of stator can not change under the situation of not revising Lamination mould.Just must revise stator mould or make the stator punching mould again if want the rotor that adapts to different-diameter through the change stator diameter, very flexible, manufacturing cost is high.
Summary of the invention
The present invention wants the technical solution problem to provide a kind of adjustable motor external stator of internal diameter and manufacturing approach thereof that adopts the integral type stator iron-core lamination; The problem of interference is caused in the notch space inadequately when having solved the coiling probe movement, can realize high copper factor and little notch or not have the notch design through the external stator that this technological forming obtains, and has reduced the difficulty of coiling; Can realize mechanized operation; Improve winding efficiency greatly, reduced manufacturing cost, more helped realizing automated production.
Technical scheme of the present invention is:
The adjustable motor external stator of a kind of internal diameter; Comprise stator core, winding and support; Its special character is: said stator core is that the stator iron-core lamination of a plurality of annular integral structures is formed by stacking, and said stator iron-core lamination has a plurality of gear pieces, and the connector that links to each other with the tooth root bottom of adjacent said gear piece; Said gear piece correspondence is built up the unit tooth piece of stator core; Said connector correspondence is built up the connecting portion between the said unit tooth piece, and the tooth root portion of said unit tooth piece constitutes the main yoke portion of stator core, and said connecting portion is the secondary yoke portion that the ear shape forms stator core to the outer bend of stator core; Said support is the tubulose hoop, and said hoop and said stator core outer peripheral face closely cooperate.
The tooth root place of the gear piece of said stator iron-core lamination is provided with the tooth tail, and said tooth tail correspondence is built up the tooth afterbody of unit tooth piece, and said tooth afterbody closely contacts with said hoop inwall.
Be provided with the I shape cushion block between the tooth root portion of said stator core; Said I shape cushion block is processed by permeability magnetic material, plays the magnetic flux of the main yoke of maintenance portion slit, conducting master yoke portion, the effect that cooperates hoop adjustment motor stator internal diameter, keeps tensioning unshakable in one's determination and accurately keep stator core cylindrical shape.
Said connector is the elongated strip of middle part width less than the both sides width; The junction of connector and tooth root is provided with gap; Then the tooth root junction of the middle part of connecting portion, connecting portion and unit tooth piece forms the weak spot that preferential deformation can take place; So that the design form of distortion formation rule in the production technology, to reach the controlled purpose of its flexural deformation.
Said stator iron-core lamination material is low silicon electric steel sheet.
A kind of manufacturing approach of aforesaid motor external stator, it comprises the steps:
1), the stamping-out moulding, utilize blanking die the stator iron-core lamination material stamping-out of full wafer to be become the stator iron-core lamination of flat ring-type;
2), folded consolidating into shape just unshakable in one's determination; With folded riveting to the stator core required thickness of a plurality of stator iron-core laminations behind the stamping-out; The gear piece of stator iron-core lamination is overlapped form the unit tooth piece of stator core; The connector of stator iron-core lamination is overlapped form the connecting portion of stator core, form stator core shape just;
3), the expansion shaping, with stator core just shape to around tractive be expanded to circularly, each notch spacing of expansion back stator core satisfies the winding space of coil winding machine probe;
4), insulation processing and coiling, insulation processing is carried out in the stator core after the shaping, utilize coil winding machine that each unit tooth piece of stator core is carried out the mechanization coiling then, the tooth body portion of tooth piece forms winding in the unit;
5), condensation is handled; Caps to each unit tooth piece of home position tractive of stator core; The tooth root portion of each unit tooth piece gradually near, the tooth root portion of adjacent cells tooth interblock is abutted one another form the main yoke portion of stator core, or makes the tooth root portion of adjacent cells tooth interblock leave the main yoke portion that design gaps forms stator core; The I-shaped cushion block that inserted-shape conforms in the said design gaps, each connecting portion bending are the secondary yoke portion that the ear shape forms stator core;
6), hoop is enclosed within the stator core outer peripheral face after the condensation, the tooth afterbody of unit tooth piece is closely contacted, with said hoop inwall with stator core and firm the combining of hoop.
The invention has the beneficial effects as follows:
1, compares with the stator of traditional external stator motor; The stator iron-core lamination stock utilization is high, stator rabbet is bigger before in condensation unshakable in one's determination; Convenient coiling can be done notch minimum even makes the groove of remaining silent after the condensation, and copper factor can reach more than 90%; Notch, diameter of stator bore size all can be adjusted under the situation that does not change Lamination mould, and flexibility is good.
2, compare with the assembled piece type fixed core, simple in structure, parts are few, make things convenient for field management; Adjacent cells tooth interblock connects without securing member, assembling has easily been saved amalgamation process unshakable in one's determination and single winding connection procedure, has practiced thrift the production time, has improved motor and has been electrically connected the reliability with mechanical connection; Simultaneously; Also have and can be used for the connecting portion (secondary yoke portion) of unit tooth interblock of magnetic conduction, this connecting portion (secondary yoke portion) can equivalence be the part of the yoke of magnetic circuit portion of electric machine iron core, improves the complete machine magnetic circuit; And then improve the performance of motor, so that its combination property surpasses assembled piece type is unshakable in one's determination.
3, under the situation that does not change the electric machine stator iron Lamination mould; The size that only changes I shape cushion block and hoop just can be through the condensation level of control stator core and then the diameter of change motor stator; To adapt to the rotor of different-diameter; Thereby develop the motor product that a series of different performances, reduce the production cost of motor greatly.
Description of drawings
Fig. 1 is the structural representation of conventional motors external stator iron-core lamination;
Fig. 2 is a conventional motors external stator coiling view unshakable in one's determination;
Fig. 3 is that stator iron-core lamination raw material of the present invention is made punching stock layout sketch map;
Fig. 4 becomes the structural representation of the first shape of stator core together for the folded riveting of a plurality of stator iron-core laminations among Fig. 3;
Fig. 5 launches sketch map for the first shape of the stator core shown in Fig. 4 through the external force tractive gradually;
Fig. 6 is further tractive expansion stator core on the basis of Fig. 5;
Fig. 7 is for to be launched into the annular sketch map to stator core on the basis of Fig. 6;
The sketch map that Fig. 8 carries out condensation work for the caps of the stator core after the tractive coiling;
Fig. 9 is the structural representation after the stator core condensation;
Figure 10 is the structural representation of further condensation on the basis of Fig. 9;
Figure 11 is structural representation of the present invention (stator core notch m is not closed, and there is certain slit p in main yoke portion, is inserted with I-shaped cushion block VI among the p of slit);
Figure 12 is structural representation of the present invention (stator core notch n is closed, and the main yoke slit q of portion is closure state);
Sequence number explanation among the figure: stator iron-core lamination I, stator core be shape II, stator core III, winding IV, hoop V, I-shaped cushion block VI, gear piece 1, crown 101, tooth body 102, tooth root 103, tooth tail 104, connector 2, unit tooth piece 3, caps 301, tooth body portion 302, tooth root portion 303, tooth afterbody 304, connecting portion 4 just.
Embodiment
Like Figure 11, shown in Figure 12, the adjustable motor external stator of this internal diameter comprises stator core III, winding IV and support, and support is a tubulose hoop V, and hoop V and stator core III outer peripheral face closely cooperate.
Like Fig. 3-shown in Figure 7, form after the superimposed distortion of stator iron-core lamination I of stator core III by a plurality of annular integral structures, the original shape of stator iron-core lamination I is flat ring-type, finally is launched into circular.Each stator iron-core lamination I has a plurality of gear pieces 1 and connector 2, and each gear piece 1 comprises the tooth tail 104 that crown 101, tooth body 102, tooth root 103, tooth root 103 places are provided with, and connector 2 links to each other with tooth root 103 bottoms of adjacent gear piece.
Gear piece 1 correspondence of a plurality of stator iron-core lamination I is built up the unit tooth piece 3 of stator core III; Each 3 of unit tooth piece has caps 301, tooth body portion 302, tooth root portion 303 and tooth afterbody 304, and the tooth afterbody 304 of stator core closely contacts with hoop V inwall.Connector 2 correspondences are built up the connecting portion 4 of 3 of unit tooth pieces, and tooth root portion on the unit tooth piece 3 303 constitutes the main yoke portion of stator core III, and connecting portion 4 is the secondary yoke portion (like Fig. 9, shown in Figure 10) that the ear shape forms the stator core III to the stator core outer bend.Connecting portion 4 has formed the secondary yoke portion of working simultaneously with the main yoke of iron core portion, plays the conducting magnetic circuit.
Because connector 2 is the elongated strip of middle part width less than the both sides width; Connector 2 is provided with gap with the junction of tooth root 103, and then the c place, middle part of connecting portion 4, connecting portion 4 have the weak spot that preferential deformation can take place with the d place, junction of the tooth root portion 303 of unit tooth piece 3.For making connecting portion 4 that comparatively desirable deformation take place, the stator core material is lower with phosphorus content and silicon content, toughness preferably material be good, like electrical sheet, preferably hang down the silicon electric steel sheet.
According to the requirement of motor, the stator core notch is divided into closed and not closed two kinds of situation.Shown in figure 12, stator core notch n is closed, and the main yoke slit q of portion is closure state, and most of magnetic circuit is through the conducting of main yoke portion, and secondary yoke portion is assisted.Shown in figure 11; Stator core notch m is not closed; There is certain slit p in main yoke portion, and (slit, p place) is provided with the I shape cushion block VI that is processed by permeability magnetic material between the tooth root portion 303 of stator core III, keeps the slit of main yoke portion and plays the magnetic conduction effect; Owing to also have secondary yoke portion to assist magnetic conduction, so total magnetic flux does not have bigger variation.According to material hardness and technological requirement, connecting portion 4 is wide as far as possible under the condition that satisfies the normal deformation condensation of electric machine stator iron, to strengthen its magnetic conductivity.I shape cushion block VI also cooperates the hoop V to confirm the internal diameter of stator core III.
The manufacturing approach of above-mentioned motor external stator comprises the steps:
1, stamping-out moulding, as shown in Figure 3, utilize blanking die the steel disc stamping-out of band shape to be become the stator iron-core lamination I of flat ring-type.The elongated strip (as in Fig. 7 c shown in) of connector 2 for being prone to deform of the stator iron-core lamination I behind the stamping-out; Connector 2 middle part width are less than the both sides width; (shown in d among Fig. 7), connector 2 goes out a semicircle gap with the junction stamping-out of tooth root 103.
2, foldedly become stator core shape II just admittedly; As shown in Figure 4; With folded riveting to the stator core required thickness of a plurality of stator iron-core lamination I behind the stamping-out; The gear piece 1 of stator iron-core lamination I is overlapped form the unit tooth piece 3 of stator core, the connector 2 of stator iron-core lamination I is overlapped form the connecting portion 4 of stator core III, constitute closed flat ring-type stator core shape II just.
3, expansion shaping; Like Fig. 5-shown in Figure 7; Utilize hydraulic spreader with stator core just the shape II to around be expanded to circularly, each notch spacing of expansion back stator core III satisfies the winding space of coil winding machine probe, wherein connecting portion 4 is the groundwork part of generation deformation.
4, insulation processing and coiling; As shown in Figure 8, the stator core III after the shaping is carried out insulation processing, promptly install insulator additional or carry out the powder spraying; Then utilize coil winding machine that each unit tooth piece 3 of stator core is carried out the mechanization coiling, tooth body portion 302 places of tooth piece 3 form the winding IV in the unit.
5, condensation is handled; Caps 301 to each unit tooth piece 3 of home position tractive of stator core III realizes the stator condensations; The tooth root portion 303 of each unit tooth piece 3 gradually near; The tooth root portion 303 of 3 of adjacent cells tooth pieces is abutted one another form the main yoke portion of stator core III, or make the tooth root portion 303 of 3 of adjacent cells tooth pieces leave the main yoke portion that design gaps forms the stator core III, each connecting portion 4 is the secondary yoke portion that the ear shape forms the stator core III to the outer bend of stator core III; As shown in Figure 9, notch tooth root portion 303 not closed, the main yoke of formation portion has certain interval each other after the condensation of stator core III; Figure 10 is closed for notch after the further condensation on the basis of Fig. 9, the tooth root portion 303 of the main yoke of formation portion abuts one another, and is closed very close to each other.If leave design gaps; The I-shaped cushion block VI (referring to Figure 11) that then inserted-shape conforms in design gaps, thus can through the distance between the regulating tooth root 303 and be equipped with the I shape cushion block VI of different size and radius that the hoop V is regulated stator to be fit to the rotor of different radii.
6, the outer peripheral face suit hoop V of the stator core III after condensation makes the tooth afterbody 304 of unit tooth piece 3 closely contact with hoop V inwall, with stator core III and firm the combining of hoop V, is integrally formed the motor outer stator structure of formula.
Claims (6)
1. adjustable motor external stator of internal diameter; Comprise stator core, winding and support; It is characterized in that: said stator core is that the stator iron-core lamination of a plurality of annular integral structures is formed by stacking, and said stator iron-core lamination has a plurality of gear pieces, and the connector that links to each other with the tooth root bottom of adjacent said gear piece; Said gear piece correspondence is built up the unit tooth piece of stator core; Said connector correspondence is built up the connecting portion between the said unit tooth piece, and the tooth root portion of said unit tooth piece constitutes the main yoke portion of stator core, and said connecting portion is the secondary yoke portion that the ear shape forms stator core to the outer bend of stator core; Said support is the tubulose hoop, and said hoop and said stator core outer peripheral face closely cooperate.
2. the adjustable motor external stator of internal diameter according to claim 1; It is characterized in that: the tooth root place of the gear piece of said stator iron-core lamination is provided with the tooth tail; Said tooth tail correspondence is built up the tooth afterbody of unit tooth piece, and said tooth afterbody closely contacts with said hoop inwall.
3. the adjustable motor external stator of internal diameter according to claim 1 is characterized in that: be provided with the I shape cushion block between the tooth root portion of said stator core, said I shape cushion block is processed by permeability magnetic material.
4. the adjustable motor external stator of internal diameter according to claim 1 is characterized in that: said connector is the elongated strip of middle part width less than the both sides width, and the junction of connector and tooth root is provided with gap.
5. the adjustable motor external stator of internal diameter according to claim 1 is characterized in that: said stator iron-core lamination material is low silicon electric steel sheet.
6. the manufacturing approach of a motor external stator as claimed in claim 1 is characterized in that, comprises the steps:
1), the stamping-out moulding, utilize blanking die the stator iron-core lamination material stamping-out of full wafer to be become the stator iron-core lamination of flat ring-type;
2), folded consolidating into shape just unshakable in one's determination; With folded riveting to the stator core required thickness of a plurality of stator iron-core laminations behind the stamping-out; The gear piece of stator iron-core lamination is overlapped form the unit tooth piece of stator core; The connector of stator iron-core lamination is overlapped form the connecting portion of stator core, form stator core shape just;
3), the expansion shaping, with stator core just shape to around tractive be expanded to circularly, each notch spacing of expansion back stator core satisfies the winding space of coil winding machine probe;
4), insulation processing and coiling, insulation processing is carried out in the stator core after the shaping, utilize coil winding machine that each unit tooth piece of stator core is carried out the mechanization coiling then, the tooth body portion of tooth piece forms winding in the unit;
5), condensation is handled; Caps to each unit tooth piece of home position tractive of stator core; The tooth root portion of each unit tooth piece gradually near, the tooth root portion of adjacent cells tooth interblock is abutted one another form the main yoke portion of stator core, or makes the tooth root portion of adjacent cells tooth interblock leave the main yoke portion that design gaps forms stator core; The I-shaped cushion block that inserted-shape conforms in the said design gaps, each connecting portion bending are the secondary yoke portion that the ear shape forms stator core;
6), hoop is enclosed within the stator core outer peripheral face after the condensation, the tooth afterbody of unit tooth piece is closely contacted, with said hoop inwall with stator core and firm the combining of hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210145327.9A CN102710033B (en) | 2012-05-11 | 2012-05-11 | Motor external stator with adjustable inner diameter and manufacturing method of motor external stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210145327.9A CN102710033B (en) | 2012-05-11 | 2012-05-11 | Motor external stator with adjustable inner diameter and manufacturing method of motor external stator |
Publications (2)
| Publication Number | Publication Date |
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| CN102710033A true CN102710033A (en) | 2012-10-03 |
| CN102710033B CN102710033B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210145327.9A Active CN102710033B (en) | 2012-05-11 | 2012-05-11 | Motor external stator with adjustable inner diameter and manufacturing method of motor external stator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219837A (en) * | 2013-03-27 | 2013-07-24 | 宁波震裕科技股份有限公司 | Method for manufacturing motor core |
| CN107425619A (en) * | 2017-08-28 | 2017-12-01 | 广东美芝制冷设备有限公司 | Stator module, motor and compressor |
| WO2022135680A1 (en) * | 2020-12-21 | 2022-06-30 | Pierburg Pump Technology Gmbh | Stator metal sheet with radial stator teeth and method for manufacturing the stator metal sheet |
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| JPH11289721A (en) * | 1998-04-06 | 1999-10-19 | Hitachi Ltd | Laminated stator core and its manufacture method |
| US6034461A (en) * | 1998-11-30 | 2000-03-07 | Shu-Chen Huang | Stator of motor |
| JP3782533B2 (en) * | 1997-01-08 | 2006-06-07 | 日本電産シバウラ株式会社 | Motor stator and motor frame |
| EP1748531A1 (en) * | 2005-07-28 | 2007-01-31 | Siemens Aktiengesellschaft | Manufacturing method for a stator stack having radial inwardly oriented stator teeth |
| JP2009261218A (en) * | 2008-03-19 | 2009-11-05 | Asmo Co Ltd | Laminated core of rotating electric machine, its manufacturing method and armature of rotating electric machine |
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2012
- 2012-05-11 CN CN201210145327.9A patent/CN102710033B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3782533B2 (en) * | 1997-01-08 | 2006-06-07 | 日本電産シバウラ株式会社 | Motor stator and motor frame |
| JPH11289721A (en) * | 1998-04-06 | 1999-10-19 | Hitachi Ltd | Laminated stator core and its manufacture method |
| US6034461A (en) * | 1998-11-30 | 2000-03-07 | Shu-Chen Huang | Stator of motor |
| EP1748531A1 (en) * | 2005-07-28 | 2007-01-31 | Siemens Aktiengesellschaft | Manufacturing method for a stator stack having radial inwardly oriented stator teeth |
| JP2009261218A (en) * | 2008-03-19 | 2009-11-05 | Asmo Co Ltd | Laminated core of rotating electric machine, its manufacturing method and armature of rotating electric machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219837A (en) * | 2013-03-27 | 2013-07-24 | 宁波震裕科技股份有限公司 | Method for manufacturing motor core |
| CN103219837B (en) * | 2013-03-27 | 2015-06-03 | 宁波震裕科技股份有限公司 | Method for manufacturing motor core |
| CN107425619A (en) * | 2017-08-28 | 2017-12-01 | 广东美芝制冷设备有限公司 | Stator module, motor and compressor |
| CN107425619B (en) * | 2017-08-28 | 2023-04-18 | 广东美芝制冷设备有限公司 | Stator module, motor and compressor |
| WO2022135680A1 (en) * | 2020-12-21 | 2022-06-30 | Pierburg Pump Technology Gmbh | Stator metal sheet with radial stator teeth and method for manufacturing the stator metal sheet |
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| Publication number | Publication date |
|---|---|
| CN102710033B (en) | 2015-01-21 |
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