CN102025234B - Method for turning rotor core punching piece - Google Patents
Method for turning rotor core punching piece Download PDFInfo
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- CN102025234B CN102025234B CN2010105829925A CN201010582992A CN102025234B CN 102025234 B CN102025234 B CN 102025234B CN 2010105829925 A CN2010105829925 A CN 2010105829925A CN 201010582992 A CN201010582992 A CN 201010582992A CN 102025234 B CN102025234 B CN 102025234B
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- fanning strip
- fanning
- center line
- punching
- sheet
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Abstract
The invention discloses a method for turning a rotor core punching piece, comprising the following steps: a, firstly, evenly segmenting a whole round punching piece into a plurality of fanning strip regions, and dividing each fanning strip region into fanning strips I and fanning strips II, wherein the fanning strip I and the fanning strip II are provided with symmetrical turning overlapping regions, and the left and right edges of the fanning strip I and the fanning strip II are overlapped with the centre line of a groove and ward off tensioning screw holes; b, when the rotor core punching piece is turned, by taking the center line of one turning overlapping region in the fanning strip I or fanning strip II as a turning reference, the fanning strip I or fanning strip II on the upper layer is turned and overlapped on the fanning strip II on the lower layer; and c, at last, the other fanning strips I or fanning strips II on the upper layer are turned and overlapped to spread the whole round in order. By using the method, the center alignment of punching piece grooves on the upper and lower layers is ensured when the punching piece is turned; and the tensioning screw holes with two specifications and slot wedges for hot jacket welded steel shaft can be individually and mutually overlapped, and seams among layers are not coincided after the punching piece is turned.
Description
Technical field
The invention belongs to field of motor manufacturing, relate to the large-sized low-speed DC motor, the rotor-core lamination that relates in particular to the large-sized low-speed DC motor turns over the sheet method.
Background technology
The original ZT150 serial motors of applicant rotor adopts skewed slot, and rotor punching laminates the back and adopts the screw rod tension, and hot jacket is on weldering muscle axle.Rotor punching adopts Digit Control Machine Tool punching out piecewise, and every has nothing in common with each other.When rotor adopts flume structure, can produce axial thrust load in the suffered electromagnetic force of machine operation process rotor coil.This axial thrust load direction changes with the motor direction of rotation.When the motor level was installed, only this axial thrust load acted on the motor bearings, because of ZT150 serial motors bearing is a zanjon ball roller bearing, had certain anti-axial thrust ability, and is less relatively to the motor influence.
Applicant's ZTG motor product need be applied in and tilt occasion is installed afterwards, and at this moment rotor also adopts flume structure, and motor bearings also will bear the electromagnetic force axial thrust load except that the axial thrust load that the bear rotor dead weight produces.When electromagnetic axial component and rotor deadweight axial thrust load direction is identical, axial thrust will produce considerable influence to bearing, when serious even cause damage of bearings, influence the motor use.Rotor is confirmed when focusing on design of electrical motor, can't be changed.Therefore, for reducing the influence of axial thrust, when increasing the bearing thrust ability, can only consider how to reduce or eliminate electromagnetic axial component.
For this reason, the applicant adopts straight trough with ZTG150 serial motors rotor, and is the same with former ZT150 series then, adopts rotor punching to laminate the back and adopts the screw rod tension, the structure of hot jacket on weldering muscle axle.
When rotor adopts straight trough, all parallel because of every roots rotor coil with shaft centre line, can not produce electromagnetic axial component, reduced the influence of axial thrust to bearing.
Adopt the motor of straight trough structure for rotor, produce notch burr damage coil insulation and reduce the influence that same specification punching became uneven produces iron core when preventing punching, when carrying out the rotor core closed assembly, turn over the sheet operation usually.
What is called is turned over sheet, promptly as far as same punching (representing the punching upper and lower surface with A, B face), if when closed assembly was unshakable in one's determination, ground floor punching A faced up, then during the closed assembly second layer, B is faced up.ZTG150 serial motors root diameter be 1500mm. in electromechanics trade, consider materials limitations, be the boundary usually with 1000mm during manufacturing, root diameter is generally the full circle punching less than the motor of 1000mm, is fanning strip greater than the rotor punching of 1000mm.But to fanning strip, for guaranteeing overall construction intensity unshakable in one's determination, adjacent two layers punching seam crossing all staggers usually.
Therefore in this ZTG150 design of electrical motor; When carrying out the punching design; Levels punching groove center was aimed at when assurance should punching be turned over sheet; Guarantee to turn over behind the sheet stretching screw hole of two kinds of specifications again and weld the muscle axle with hot jacket and can overlap separately, will guarantee that also bed joint does not overlap, such rotor-core lamination structural design more complicated with the wedge groove.
Summary of the invention
For this reason; Technical problem to be solved by this invention provides a kind of rotor-core lamination and turns over the sheet method; Levels punching groove center aims at, guarantees again to turn over that the stretching screw hole and the hot jacket weldering muscle axle of two kinds of specifications can overlap separately, also will guarantee the purpose that bed joint does not overlap with the wedge groove behind the sheet when should punching turning over sheet to reach assurance, overcomes the defective of prior art existence.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of rotor-core lamination turns over the sheet method, and full circle punching outward flange has groove spaced apart, and inward flange has wedge groove spaced apart, is distributed with the stretching screw hole on it, and it turns over the sheet step and is:
A, at first, the full circle punching is evenly divided into a plurality of fanning strips zone; Each fanning strip zone subdivision is slit into first fanning strip and second fanning strip; What said first fanning strip and second fanning strip all had a symmetry turns over the sheet overlapping region, and the right and left of first fanning strip and second fanning strip edge all overlaps and avoid the stretching screw hole with the groove center line;
B, when turning over sheet, the symmetrical center line of turning over the sheet overlapping region with in first fanning strip or the second fanning strip one of them is the upset benchmark, and the first fanning strip on upper strata or second fanning strip are overturn on the stacked fanning strip;
C, last is with other first fanning strip of upper strata and the second fanning strip stacked full circle that is paved into that overturns in order.
In embodiment of the present invention; Said full circle punching has 265 grooves, 30 wedge grooves is arranged; The stretching screw hole is divided into 40 stretching screw macropores of inner ring and 40 stretching screw apertures of outer ring; Said full circle is evenly divided into 5 fanning strip zones, and the covering of the fan angle of first fanning strip and second fanning strip is respectively 38.0377 ° and 33.9623 °; The symmetrical center line of turning over the sheet overlapping region of the symmetry of said first fanning strip overlaps with one of them groove center line, the big centerline hole of stretching screw and wedge groove center line, and the symmetrical center line of turning over the sheet overlapping region of the symmetry of said second fanning strip overlaps with big centerline hole of one of them stretching screw and wedge groove center line.
More than be exactly that rotor-core lamination of the present invention turns over the sheet method; Levels punching groove center aimed at, has guaranteed again to turn over that the stretching screw hole and the hot jacket weldering muscle axle of two kinds of specifications can overlap separately, also guaranteed that with the wedge groove bed joint does not overlap behind the sheet when this method had guaranteed that sheet is turned in punching; And then satisfied the needs that motor tilts to install, avoided the generation of axial magnetic component.Because whole iron core only needs the segmental punching of two kinds of sizes, no longer need adopt Digit Control Machine Tool punching out piecewise simultaneously, reduce production cost.
Description of drawings
Fig. 1 is the sheet sketch map that turns over of the present invention.
Among the figure:
100, lower floor's punching, the punching of 200-upper strata, 300-turns over the sheet overlapping region, and 301, the 302-symmetrical center line; 401-lower floor fanning strip seam, 402-upper strata fanning strip seam, 101-groove; 10-fanning strip zone, 11-first fanning strip, 12-second fanning strip; 13-wedge groove, 14-stretching screw macropore, 15-stretching screw aperture.
Embodiment
Rotor-core lamination provided by the invention turns over the sheet method, the steps include:
A, at first the full circle punching is evenly divided into a plurality of fanning strips zone; Each fanning strip zone subdivision is slit into first fanning strip and second fanning strip; What said first fanning strip and second fanning strip all had a symmetry turns over the sheet overlapping region, and the right and left of first fanning strip and second fanning strip edge all overlaps and avoid the stretching screw hole with the groove center line;
B, when turning over sheet, the symmetrical center line of turning over the sheet overlapping region with in first fanning strip or the second fanning strip one of them is the upset benchmark, and the first fanning strip or the upset of second fanning strip on upper strata is stacked on the fanning strip;
C, last is with other first fanning strip of upper strata and the second fanning strip stacked full circle that is paved into that overturns in order.
In order more clearly to set forth the present invention, to combine Fig. 1 be that example is elaborated with the sheet that turns over of the rotor-core lamination of ZTG150 motor below:
The number that the ZTG150 rotor has groove 101 is 265; For conveniently turning over the sheet operation; Whole rotor-core lamination cross section circle is divided into five identical fanning strip zones 10; One deck rotor punching is put together by five identical fanning strip zones 10, and every is 72 ° of sector regions, comprises 53 grooves.Consider the restriction of punching punching device, every segmental punching splits into first fanning strip 11 and 12 two little fanning strips of second fanning strip.
For weldering muscle axle construction motor, consider stationary rotor balance needs, weldering muscle quantity adopts even number usually.The weldering muscle is 4 on the former ZT150 electric machine rotor iron core axis, becomes star-like along circumference and is uniformly distributed with.As far as the ZTG150 motor, rotor-core lamination one deck is that 5 first fanning strips 11 and 5 second fanning strips 12 are combined at interval from the above, and totally 10 little fanning strips are combined into.Deform for improving the support power of being welded muscle and wedge, need to increase weldering muscle quantity at hot jacket process rotor unshakable in one's determination cylinder unshakable in one's determination.
In the ZTG150 motor, the stretching screw hole is divided into 40 stretching screw macropores 14 of inner ring and 40 stretching screw apertures 15 of outer ring.Because every layer of punching of rotor core be combined into by five identical fanning strip zones, and the quantity of little fanning strip is 10, so there are 8 stretching screw macropores 14 and 8 stretching screw apertures 15 in each fanning strip zone 10,9 ° of distributions in interval on circumference.
The weldering muscle is 6 on the ZTG150 electric machine rotor iron core weldering muscle axle, and when guaranteeing to turn over the sheet operation, two-layer up and down punching wedge groove overlaps, and is 30 so get wedge groove 13 quantity, is uniformly distributed along the circumference 6 of every fanning strip areas, on every fanning strip 3,12 ° of circle spacings.
Be convenient design, we set a groove center line, a tension screw center and a wedge groove center line three and overlap, and belong to radius for turning over the sheet symmetrical center line with it.On this basis for guarantee that two little segmental punching areas that each fanning strip zone 10 is divided into are close and do not have stretching screw hole and wedge groove position to be in or approaching adjacent punching seam on; The covering of the fan angle of setting first fanning strip 11 is 38.0377 °, and the covering of the fan angle of second fanning strip 12 is 33.9623 °.
Like this; Full circle punching circumference has 5 symmetrical diameters; Every symmetrical diameter one side radius satisfies a groove center line, a tension screw center and a wedge groove center line three and overlaps (being defined as benchmark radius R 1), and a side half overlaps (being defined as benchmark radius R 2) through satisfying a tooth center line, a tension screw center and a wedge groove center line three.Be symmetrical centre with the accurate radius R 1 of a foundation (or R2) simultaneously; With this benchmark radius angle be that 8.1509 ° radius (this radius is crossed groove center) carries out burst for the punching border; Can satisfy and turn over the sheet requirement, slotless center line, tension screw center and wedge groove position are in any one deck punching seam crossing.Be 8.1509 ° radius when being the punching border simultaneously, have only a symmetrical radius on every fanning strip with this benchmark radius angle.
This wherein, second fanning strip 12 has a stretching screw hole near the punching edge.May cause the punching edge deformation during punching out punching, so this hole is moved 1.5 ° to the punching inward turning, corresponding the moving in corresponding aperture position can solve when turning over sheet in the second punching simultaneously, satisfies and turns over the sheet operation.
After completing lower floor's punching 100; As shown in Figure 1 again; When spreading layer punching 200; Need to turn over sheet to punching, the symmetrical center line 301 or 302 (like the symmetrical center line of turning over the sheet overlapping region 301 of first fanning strip 11) of turning over sheet overlapping region 300 with in first fanning strip 11 or the second fanning strip 12 one of them serve as the upset benchmark, and the first fanning strip on upper strata or second fanning strip are overturn to be stacked on lower floor's fanning strip; With other first fanning strip of upper strata and the second fanning strip stacked full circle that is paved into that overturns in order.
Through facts have proved, rotor-core lamination turns over the sheet method and has satisfied the needs that motor tilts to install, and has avoided the generation of axial magnetic component.Because whole iron core only needs the first fanning strip and the second fanning strip of two kinds of sizes, no longer need adopt Digit Control Machine Tool punching out piecewise simultaneously, reduce production cost.The most important thing is to guarantee that levels punching groove center when sheet is turned in punching aims at, guaranteed again to turn over that the stretching screw hole and the hot jacket weldering muscle axle of two kinds of specifications can overlap separately, also guaranteed that with the wedge groove bed joint does not overlap behind the sheet; And then satisfied the needs that motor tilts to install, avoided the generation of axial magnetic component.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (1)
1. a rotor-core lamination turns over the sheet method, and full circle punching outward flange has groove spaced apart, and inward flange has wedge groove spaced apart, is distributed with the stretching screw hole on it, it is characterized in that, it turns over the sheet step and is:
A, at first, the full circle punching is evenly divided into a plurality of fanning strips zone; Each fanning strip zone subdivision is slit into first fanning strip and second fanning strip; What said first fanning strip and second fanning strip all had a symmetry turns over the sheet overlapping region, and the right and left of first fanning strip and second fanning strip edge all overlaps and avoid the stretching screw hole with the groove center line;
B, when turning over sheet, the symmetrical center line of turning over the sheet overlapping region with in first fanning strip or the second fanning strip one of them is the upset benchmark, and the first fanning strip or the upset of second fanning strip on upper strata is stacked on the fanning strip of lower floor;
C, last is with other first fanning strip of upper strata and the second fanning strip stacked full circle that is paved into that overturns in order; Said full circle punching has 265 grooves, 30 wedge grooves is arranged; The stretching screw hole is divided into 40 stretching screw macropores of inner ring and 40 stretching screw apertures of outer ring; Said full circle is evenly divided into 5 fanning strip zones, and the covering of the fan angle of first fanning strip and second fanning strip is respectively 38.0377 ° and 33.9623 °; The symmetrical center line of turning over the sheet overlapping region of the symmetry of said first fanning strip overlaps with one of them groove center line, the big centerline hole of stretching screw and wedge groove center line, and the symmetrical center line of turning over the sheet overlapping region of the symmetry of said second fanning strip overlaps with big centerline hole of one of them stretching screw and wedge groove center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105829925A CN102025234B (en) | 2010-12-10 | 2010-12-10 | Method for turning rotor core punching piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105829925A CN102025234B (en) | 2010-12-10 | 2010-12-10 | Method for turning rotor core punching piece |
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| CN102025234A CN102025234A (en) | 2011-04-20 |
| CN102025234B true CN102025234B (en) | 2012-08-22 |
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| CN2010105829925A Active CN102025234B (en) | 2010-12-10 | 2010-12-10 | Method for turning rotor core punching piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102497063A (en) * | 2011-11-15 | 2012-06-13 | 中电电机股份有限公司 | Splicing structure of armature fanning strips of large and medium sized direct current motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866690A (en) * | 2006-06-12 | 2006-11-22 | 中国北车集团永济电机厂 | Low-speed big-diameter high-torque asynchronous motor |
| CN101282048A (en) * | 2007-04-04 | 2008-10-08 | 上海南洋电机有限公司 | Chaining fanning strip for large-medium type motor and manufacturing method thereof |
| CN101656446A (en) * | 2009-09-23 | 2010-02-24 | 江苏通达动力科技股份有限公司 | Laminating method for stator fanning strip of direct-drive wind power generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101637979B (en) * | 2002-06-18 | 2012-07-04 | 株式会社阿玛达 | Servo-drive system and continuous processing system for press machine |
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- 2010-12-10 CN CN2010105829925A patent/CN102025234B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866690A (en) * | 2006-06-12 | 2006-11-22 | 中国北车集团永济电机厂 | Low-speed big-diameter high-torque asynchronous motor |
| CN101282048A (en) * | 2007-04-04 | 2008-10-08 | 上海南洋电机有限公司 | Chaining fanning strip for large-medium type motor and manufacturing method thereof |
| CN101656446A (en) * | 2009-09-23 | 2010-02-24 | 江苏通达动力科技股份有限公司 | Laminating method for stator fanning strip of direct-drive wind power generator |
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| CN102025234A (en) | 2011-04-20 |
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