CN102710033B - 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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- CN102710033B CN102710033B CN201210145327.9A CN201210145327A CN102710033B CN 102710033 B CN102710033 B CN 102710033B CN 201210145327 A CN201210145327 A CN 201210145327A CN 102710033 B CN102710033 B CN 102710033B
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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 outer stator of motor, particularly a kind of motor external stator with adjustable inner diameter and manufacture method thereof realizing mechanization winding.
Background technology
The iron core great majority of tradition external stator motor are all use overall circular punching material to fold riveting to form, and there are the following problems for the stator core using this manufacturing process to manufacture and stator:
1, circular iron-core lamination stock utilization is low, is generally no more than 30%.
2, as shown in Figure 1 and Figure 2, the notch a1 opening of stator core is large, but copper factor is low.Sonde-type coil winding machine is used to produce, due to the space of self process will be left when coiling probe moves in groove a, therefore copper factor can not be get Tai Gao, and owing to will to pop one's head in headspace to coiling, a1 is larger for core slots opening, this can cause the torque pulsation of motor, affects motor performance.
Disclosed in CN1178410 disclosed in " manufacture method unshakable in one's determination of electric rotary machine is with unshakable in one's determination ", CN1391330 " core device ", solve traditional external stator motor stator-core punching utilance low, copper factor is low, the problem that notch opening is large.It is built up multiple independent stack of lamination by some iron core splicing sheets, then direct by copper wire winding on independent stack of lamination, more each stack of lamination coupled together form stator core overall structure.Although the stator core of this assembled piece type structure solves coiling problem, have the following disadvantages:
1, complex structure.Because outer stator of motor iron core is some pieces of splits structures together, in split process, each winding and stack of lamination are the construction units be separated from each other, and piecemeal is more, are unfavorable for operation field handling of goods and materials.
2, wire difficulty is connected.The wire of every block stator core has independently the end of a thread, connects wire very time-consuming, and increases due to wire jointing, reduces the reliability of motor electrical connection.
3, fastening after split, sizing difficulty.When multiple stack of lamination splices and is fixed into annular stator body, the connection utilizing its two ends to arrange between adjacent stator core section is formed with convex, recess and connects, or the annular pressing plate installed additional by stator both ends of the surface and carry out connection adjacent stator core section and fastening through the screw (rivet) of the pre-manufactured hole on annular pressing plate.
4, the stator structure that above-mentioned utilization connects with the securing member of convex, recess or lower end unshakable in one's determination connects makes each stator core close contact, completely closed formation magnetic circuit, for have stator core particular/special requirement (requiring that rear of core must reserve the gap every magnetic or heat radiation) motor, be inapplicable.
In addition, in the shaping scheme of existing outer stator of motor, the diameter of stator can not change when not revising Lamination mould.If want, the rotor adapting to different-diameter by changing stator diameter just must be revised stator mould or again manufacture stator punching mold, very flexible, and manufacturing cost is high.
Summary of the invention
The present invention want technical solution problem to be to provide a kind of motor external stator with adjustable inner diameter and the manufacture method thereof that adopt integral type stator iron-core lamination, when solving coiling probe movement, the problem of interference is caused in notch space not, the external stator obtained by this technological forming can realize high copper factor and small-rabbet or without notch design, reduce the difficulty of coiling, mechanized operation can be realized, substantially increase winding efficiency, reduce manufacturing cost, be more conducive to realizing automated production.
Technical scheme of the present invention is:
A kind of motor external stator with adjustable inner diameter, comprise stator core, winding and support, its special character is: described stator core is that the stator iron-core lamination of multiple annular integral structure is formed by stacking, described stator iron-core lamination has multiple gear piece, and with the connector be connected bottom the tooth root of adjacent described gear piece, described gear piece correspondence is built up the unit tooth block of stator core, described connector correspondence is built up the connecting portion between described unit tooth block, the tooth root portion of described unit tooth block forms the main yoke portion of stator core, described connecting portion is the secondary yoke portion that ear forms stator core to the outer bend of stator core, described support is tubulose hoop, described hoop and described stator core outer peripheral face closely cooperate.
The tooth root place of the gear piece of described stator iron-core lamination is provided with tooth tail, and described tooth tail correspondence is built up tooth afterbody, described tooth afterbody and the described hoop inwall close contact of unit tooth block.
I shape cushion block is provided with between the tooth root portion of described stator core, described I shape cushion block is made up of permeability magnetic material, plays and keeps gap, main yoke portion, the magnetic flux in conducting main yoke portion, cooperation hoop to adjust motor stator internal diameter, keep tensioning unshakable in one's determination and the accurate effect keeping stator core outer circular shape.
Described connector is the elongated strip that middle part width is less than 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 block forms the weak spot that preferential deformation can occur, so that be out of shape the design form of formation rule in production technology, to reach the controlled object of its flexural deformation.
Described stator iron-core lamination material is low silicon electric steel sheet.
A manufacture method for outer stator of motor as above, it comprises the steps:
1), stamping-out is shaping, utilizes blanking die that the stator iron-core lamination material stamping-out of full wafer is become the stator iron-core lamination of flat ring-type;
2), folded consolidate into unshakable in one's determination at the beginning of shape, multiple stator iron-core laminations after stamping-out are folded riveting to stator core required thickness, the gear piece of stator iron-core lamination is overlapped and forms the unit tooth block of stator core, the connector of stator iron-core lamination is overlapped and forms the connecting portion of stator core, form stator core just shape;
3), expand shaping, be expanded to circular by first for stator core shape to surrounding tractive, after expansion, each notch spacing of stator core meets the winding space of coil winding machine probe;
4), insulation processing and coiling, insulation processing is carried out to the stator core after shaping, then utilizes coil winding machine to carry out mechanization coiling to stator core each unit tooth block, form winding in the tooth body portion of unit tooth block;
5), condensation process, to the tooth crown of home position tractive each unit tooth block of stator core, the tooth root portion of each unit tooth block is close gradually, the tooth root portion of adjacent cells tooth interblock is made to abut one another the main yoke portion forming stator core, or make the tooth root portion of adjacent cells tooth interblock leave the main yoke portion of design gaps formation stator core, the I-shaped cushion block that in described design gaps, inserted-shape conforms to, each connecting portion bends the secondary yoke portion forming stator core in ear;
6), by hoop be enclosed within the stator core outer peripheral face after condensation, make the tooth afterbody of unit tooth block and described hoop inwall close contact, stator core and hoop are firmly combined.
The invention has the beneficial effects as follows:
1, compared with the stator of traditional external stator motor, before high, the unshakable in one's determination condensation of stator iron-core lamination stock utilization, stator rabbet is larger, facilitate coiling, notch can be done minimumly even make closed slot after condensation, copper factor can reach more than 90%, notch, the equal adjustable of diameter of stator bore size when not changing Lamination mould, flexibility is good.
2, compared with assembled piece type fixed core, structure is simple, and parts are few, facilitate field management; Adjacent cells tooth interblock connects without securing member, and assembling easily, eliminates split process unshakable in one's determination and single winding switching process, saved the production time, improves the reliability of motor electrical connection and 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 be equivalent to the part in the yoke of magnetic circuit portion of electric machine iron core, improves complete machine magnetic circuit, and then improve the performance of motor, therefore its combination property exceedes assembled piece type iron core.
3, when not changing electric machine stator iron Lamination mould, only change the size of I shape cushion block and hoop just by controlling the condensation level of stator core and then changing the diameter of motor stator, to adapt to the rotor of different-diameter, thus develop the motor product of a series of different performance, greatly reduce the production cost of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional motors external stator iron-core lamination;
Fig. 2 is the winding state schematic diagram of conventional motors external stator iron core;
Fig. 3 is that stator iron-core lamination raw material of the present invention makes punching stock layout schematic diagram;
Fig. 4 is that in Fig. 3, multiple stator iron-core lamination folds the structural representation that riveting becomes the first shape of stator core together;
Fig. 5 shape at the beginning of the stator core shown in Fig. 4 launches schematic diagram gradually by external force tractive;
Fig. 6 is that further tractive launches stator core on the basis of Fig. 5;
Fig. 7 is launched into annular schematic diagram stator core on the basis of Fig. 6;
Fig. 8 is the schematic diagram that the tooth crown of stator core after tractive coiling carries out condensation work;
Fig. 9 is the structural representation after 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 does not close, and there is certain gap p in main yoke portion, is inserted with I-shaped cushion block VI in the p of gap);
Figure 12 is structural representation of the present invention (stator core notch n closes, and main yoke portion gap q is closure state);
In figure, sequence number illustrates: stator iron-core lamination I, stator core just 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 block 3, tooth crown 301, tooth body portion 302, tooth root portion 303, tooth afterbody 304, connecting portion 4.
Embodiment
As shown in Figure 11, Figure 12, this motor external stator with adjustable inner diameter, comprises stator core III, winding IV and support, and support is tubulose hoop V, and hoop V and stator core III outer peripheral face closely cooperate.
As shown in Fig. 3-Fig. 7, stator core III forms by after the superimposed distortion of stator iron-core lamination I of multiple annular integral structure, and the original shape of stator iron-core lamination I is flat ring-type, is finally launched into circular.Each stator iron-core lamination I has multiple gear piece 1 and connector 2, and the tooth tail 104 that each gear piece 1 comprises crown 101, tooth body 102, tooth root 103, tooth root 103 place are provided with, connector 2 is connected with bottom the tooth root 103 of adjacent gear piece.
Gear piece 1 correspondence of multiple stator iron-core lamination I is built up the unit tooth block 3 of stator core III, each unit tooth block 3 has tooth crown 301, tooth body portion 302, tooth root portion 303 and tooth afterbody 304, tooth afterbody 304 and the hoop V inwall close contact of stator core.Connector 2 correspondence is built up the connecting portion 4 between unit tooth block 3, and the tooth root portion 303 on unit tooth block 3 forms the main yoke portion of stator core III, and connecting portion 4 is the secondary yoke portion (as shown in Figure 9, Figure 10) that ear forms stator core III to stator core outer bend.Connecting portion 4 defines the secondary yoke portion that the main yoke portion with iron core works simultaneously, plays conducting magnetic circuit.
Due to connector 2 for middle part width is less than the elongated strip of both sides width, connector 2 is provided with gap with the junction of tooth root 103, then the d place, junction in the tooth root portion 303 of the c place, middle part of connecting portion 4, connecting portion 4 and unit tooth block 3 has the weak spot that preferential deformation can occur.For making connecting portion 4 that ideal deformation occur, stator core material is with phosphorus content and silicon content is lower, the good material of toughness is good, as electrical sheet, and preferred low silicon electric steel sheet.
According to the requirement of motor, stator core notch is divided into closed and not closed two kinds of situations.As shown in figure 12, stator core notch n closes, and main yoke portion gap q is closure state, and most of magnetic circuit is by main yoke portion conducting, and secondary yoke portion is assisted.As shown in figure 11, stator core notch m does not close, there is certain gap p in main yoke portion, between the tooth root portion 303 of stator core III, (gap, p place) is provided with the I shape cushion block VI be made up of permeability magnetic material, keep the gap in main yoke portion and play magnetic conduction effect, owing to also having secondary yoke portion to carry out auxiliary magnetic conduction, therefore total magnetic flux is not more big changes.According to material hardness and technological requirement, connecting portion 4 is wide as far as possible under the condition meeting electric machine stator iron normal deformation condensation, to strengthen its magnetic conductivity.I shape cushion block VI also coordinates hoop V to determine the internal diameter of stator core III.
The manufacture method of above-mentioned outer stator of motor, comprises the steps:
1, stamping-out is shaping, as shown in Figure 3, utilizes blanking die that the steel disc stamping-out of band shape is become the stator iron-core lamination I of flat ring-type.The connector 2 of the stator iron-core lamination I after the stamping-out elongated strip (as in Fig. 7 shown in c) for easily deforming, in the middle part of connector 2, width is less than both sides width, (as in Fig. 7 shown in d), connector 2 goes out a semicircle gap with the junction stamping-out of tooth root 103.
2, foldedly stator core just shape II is admittedly become, as shown in Figure 4, multiple stator iron-core laminations I after stamping-out are folded riveting to stator core required thickness, the gear piece 1 of stator iron-core lamination I is overlapped and forms the unit tooth block 3 of stator core, the connector 2 of stator iron-core lamination I is overlapped and forms the connecting portion 4 of stator core III, form closed flat annular stator iron core just shape II.
3, shaping is expanded, as shown in Figure 5-Figure 7, utilize hydraulic spreader to be expanded to circular to surrounding by first for stator core shape II, after expansion, each notch spacing of stator core III meets the winding space of coil winding machine probe, and wherein connecting portion 4 is the main working parts that deformation occurs.
4, insulation processing and coiling, as shown in Figure 8, insulation processing is carried out to the stator core III after shaping, namely installs insulator additional or carry out powder spray, then utilize coil winding machine to carry out mechanization coiling to stator core each unit tooth block 3, form winding IV at the place of tooth body portion 302 of unit tooth block 3.
5, condensation process, tooth crown 301 to home position tractive each unit tooth block 3 of stator core III realizes stator condensation, the tooth root portion 303 of each unit tooth block 3 is close gradually, the tooth root portion 303 between adjacent cells tooth block 3 is made to abut one another the main yoke portion forming stator core III, or make the tooth root portion 303 between adjacent cells tooth block 3 leave the main yoke portion of design gaps formation stator core III, each connecting portion 4 is the secondary yoke portion that ear forms stator core III to the outer bend of stator core III, as shown in Figure 9, after stator core III condensation, notch does not close, there is certain interval in the tooth root portion 303 forming main yoke portion each other, Figure 10 is that the tooth root portion 303 that after further condensation, notch closed, formed main yoke portion on the basis of Fig. 9 abuts one another, closed very close to each other.If leave design gaps, the I-shaped cushion block VI(that then inserted-shape conforms in design gaps is see Figure 11), so the I shape cushion block VI of different size can be equipped with and hoop V regulates the radius of stator with the rotor of applicable different radii by the distance between regulating tooth root 303.
The outer peripheral face suit hoop V of the stator core III 6, after condensation, makes tooth afterbody 304 and the hoop V inwall close contact of unit tooth block 3, stator core III and hoop V is firmly combined, form the outer stator of motor structure of integral type.
Claims (4)
1. a motor external stator with adjustable inner diameter, comprise stator core, winding and support, described stator core is that the stator iron-core lamination of multiple annular integral structure is formed by stacking, described stator iron-core lamination has multiple gear piece, and with the connector be connected bottom the tooth root of adjacent described gear piece, described gear piece correspondence is built up the unit tooth block of stator core, described connector correspondence is built up the connecting portion between described unit tooth block, the tooth root portion of described unit tooth block forms the main yoke portion of stator core, described connecting portion is the secondary yoke portion that ear forms stator core to the outer bend of stator core, described support is tubulose hoop, described hoop and described stator core outer peripheral face closely cooperate, described connector is the elongated strip that middle part width is less than both sides width, the junction of connector and tooth root is provided with gap, I shape cushion block is provided with between the tooth root portion of described stator core, described I shape cushion block is made up of permeability magnetic material.
2. motor external stator with adjustable inner diameter according to claim 1, it is characterized in that: the tooth root place of the gear piece of described stator iron-core lamination is provided with tooth tail, described tooth tail correspondence is built up tooth afterbody, described tooth afterbody and the described hoop inwall close contact of unit tooth block.
3. motor external stator with adjustable inner diameter according to claim 1, is characterized in that: described stator iron-core lamination material is low silicon electric steel sheet.
4. a manufacture method for outer stator of motor as claimed in claim 1, is characterized in that, comprises the steps:
1), stamping-out is shaping, utilizes blanking die that the stator iron-core lamination material stamping-out of full wafer is become the stator iron-core lamination of flat ring-type;
2), folded consolidate into unshakable in one's determination at the beginning of shape, multiple stator iron-core laminations after stamping-out are folded riveting to stator core required thickness, the gear piece of stator iron-core lamination is overlapped and forms the unit tooth block of stator core, the connector of stator iron-core lamination is overlapped and forms the connecting portion of stator core, form stator core just shape;
3), expand shaping, be expanded to circular by first for stator core shape to surrounding tractive, after expansion, each notch spacing of stator core meets the winding space of coil winding machine probe;
4), insulation processing and coiling, insulation processing is carried out to the stator core after shaping, then utilizes coil winding machine to carry out mechanization coiling to stator core each unit tooth block, form winding in the tooth body portion of unit tooth block;
5), condensation process, to the tooth crown of home position tractive each unit tooth block of stator core, the tooth root portion of each unit tooth block is close gradually, the tooth root portion of adjacent cells tooth interblock is made to leave the main yoke portion of design gaps formation stator core, the I-shaped cushion block that in described design gaps, inserted-shape conforms to, each connecting portion bends the secondary yoke portion forming stator core in ear;
6), by hoop be enclosed within the stator core outer peripheral face after condensation, make the tooth afterbody of unit tooth block and described hoop inwall close contact, stator core and hoop are firmly combined.
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 |
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| 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 |
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| CN102710033A CN102710033A (en) | 2012-10-03 |
| CN102710033B true CN102710033B (en) | 2015-01-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| EP4264784A1 (en) * | 2020-12-21 | 2023-10-25 | Pierburg Pump Technology GmbH | Stator metal sheet with radial stator teeth and method for manufacturing the stator metal sheet |
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| 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 |
| GB2344224A (en) * | 1998-11-30 | 2000-05-31 | Huang Shu Chen | Two part laminated 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 |
| JP5291433B2 (en) * | 2008-03-19 | 2013-09-18 | アスモ株式会社 | LAMINATED CORE OF ROTATING ELECTRIC MACHINE AND METHOD FOR MANUFACTURING THE SAME |
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| JP特开2009-261218A 2009.11.05 * |
| JP特开平11-289721A 1999.10.19 * |
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