CN102510178B - Armature iron core compensating method of large-sized brushless exciter - Google Patents
Armature iron core compensating method of large-sized brushless exciter Download PDFInfo
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- CN102510178B CN102510178B CN 201110337376 CN201110337376A CN102510178B CN 102510178 B CN102510178 B CN 102510178B CN 201110337376 CN201110337376 CN 201110337376 CN 201110337376 A CN201110337376 A CN 201110337376A CN 102510178 B CN102510178 B CN 102510178B
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Abstract
The invention relates to an armature iron core compensating method of a large-sized brushless exciter, which includes steps of disposing at least two lead bars on an uppermost stamping sheet of the armature iron core at equal intervals of the circumference after completing stacking each time, performing cold pressing later, measuring the difference between the thickness of the lead bars close to measuring points at an outer ring and an inner ring, and increasing or decreasing number of layers of insulation sheets according to the difference. The armature iron core compensating method of the large-sized brushless exciter is free of affection on original stacking process, lead extrusion process and measuring statistics of the thickness of the lead bars are added on the basis of the cold pressing, then the number of the required insulation sheets can be calculated, and accordingly, the heights of the inner ring and the outer ring of an armature iron core can be kept equal, and stacking quality of the armature iron core is improved.
Description
Technical field
The present invention relates to the method for a kind of large-scale brushless exciter armature rotor iron core pressure mounting quality control, be used in the lamination process of armature rotor iron core, belong to the armature rotor assembling unshakable in one's determination field of brushless exciter.
Background technology
Brushless exciter is the alternating current generator of a revolving-armature type, and the silicon rectification bridge that the interchange output of rotating armature is received in the rotating rectifier dish carries out rectification, direct current is directly introduced the rotor winding of generator.The method of operation that conventional brushless exciter armature rotor iron core laminates is to laminate stage by stage by every grade of iron core of scheming requirement, and the centre is not adjusted by any auxiliary material.Because iron-core lamination is that the silicon steel plate punching out forms, inside and outside circle thickness there are differences (all being that outer round place is thin usually), and whole armature core all to be the punching of going up a thousand sheets be overlapped into, though the thickness error of individual punching may be small, but accumulated error is very big, finally can cause the height of the whole inside and outside circle of armature core inconsistent, thereby influence field performance.
Summary of the invention
The purpose of this invention is to provide a kind of brushless exciter armature rotor iron core that laminates quality that improves armature core laminates and the method for colding pressing.
In order to achieve the above object, technical scheme of the present invention has provided the compensation method of a kind of large-scale brushless exciter armature core, this large-scale brushless exciter armature core laminate and the number of times of colding pressing is n time, n 〉=2 the steps include:
Step 1, armature core is laminated to the height of colding pressing for the first time after, the armature core of folding is winched to the pull-down press together with the instrument of laminating, place at least four leads to press branches such as circumference behind the good center in the uppermost punching of armature core, carry out colding pressing the first time after putting cold pressing required pressing plate and pressure cap well;
After step 2, the press release, on every leads, equidistantly be taken to few two measurement points, these two measurement points are cylindrical place and the inner circle of the close uppermost punching of armature core respectively, measure the leads thickness of each measurement point, radially wait the measurement point of position to average on all leads, calculate the difference X of the thickness average of the thickness average of cylindrical place measurement point and inner circle measurement point, the quantity N=[X ÷ K]+1 that needs the supplementary insulation sheet when then next time laminating, wherein, [] expression round numbers, K is the thickness of insulating trip;
Step 3, take off leads after, armature core is laminated to the height that needs when colding pressing, in lamination process, increase N sheet insulating trip, the armature core of folding is winched to the pull-down press together with the instrument of laminating, place at least four leads to press branches such as circumference behind the good center in the uppermost punching of armature core, cold pressing after putting cold pressing required pressing plate and pressure cap well;
Step 4, after the press release, on every leads, equidistantly be taken to few two measurement points, these two measurement points are cylindrical place and the inner circle of the close uppermost punching of armature core respectively, measure the leads thickness of each measurement point, radially wait the measurement point of position to average on all leads, calculate the difference of cylindrical place measurement point and inner circle measurement point, if the thickness average of cylindrical place measurement point is than the big X of thickness average of inner circle measurement point, the quantity N=[X ÷ K]+1 that needs the supplementary insulation sheet when then next time laminating, wherein, [] expression round numbers, K is the thickness of insulating trip, if the thickness average of cylindrical place measurement point than the little Y of thickness average of inner circle measurement point, need reduce the quantity M=[Y ÷ K] of insulating trip when then laminating next time;
Step 5, repeating step 3 to step 4 laminate and cold pressing until finishing n time.
The present invention does not influence original technology that laminates, just reach in original basis increase lead extrusion technology of colding pressing the thickness measure of leads is added up, calculate the quantity of required insulating trip then, make the height of the whole inside and outside circle of armature core be consistent, improved the quality that laminates of armature core.
Embodiment
For the present invention is become apparent, be described in detail below with a preferred embodiment now.
A kind of large-scale brushless exciter armature core compensation method that present embodiment provides is applied in the 5800kW brushless exciter, totally 38 grades of the armature cores of this 5800kW brushless exciter, total high score laminates for four times, is respectively to cold pressing after being laminated to 9,19,28,38 grades, and its step is as follows:
Put generator end trim ring, generator end tooth support, armature stamping, ventilation channel plate successively after step 1, the cleaning, use the locating bar shaping after being stacked to 6 grades successively.Laminate after 9 grades (height of colding pressing for the first time), shaping again can replenish a layer thickness and be the insulating trip of 0.2mm to satisfy the height of colding pressing for the first time in lamination process.
Step 2, the iron core that will laminate winch to pull-down press place, carry out colding pressing the first time, and 8 leads of branch placement and markings such as circumference are pressed in the top unshakable in one's determination.Be forced into 47 tons of pressurize half an hour after pressurization, the release 10 times repeatedly.Measure the thickness situation of the inner circle of each leads, centre, outer circle after the release, get the mean value that 8 leads radially wait the measurement point of position, as the thickness average of measurement point that is positioned at the cylindrical place is than the big Xmm of thickness average of the measurement point that is positioned at inner circle, and then follow-up consideration will be mended the insulating trip of [X ÷ 0.2]+1 layer of 0.2mm.Namely as the thickness average of measurement point that is positioned at the cylindrical place than the big 0.5mm of thickness average of the measurement point that is positioned at inner circle, then to mend the insulating trip of 3 layers of 0.2mm in follow-up the laminating.
The punching that step 3, the second time laminate is highly basic and suitable for the first time, also to fill up a layer insulating trip so laminate itself for the second time, add 3 layers of insulating trip that calculate by previous step, as the a+3 that adds up to that laminates highly required insulating trip in the second time, insulating trip is evenly arranged in each grade as far as possible.
Step 4, iron core is winched to pull-down press place, carry out colding pressing the second time, the top unshakable in one's determination is pressed branch such as circumference and is placed 8 leads and marking.Be forced into 47 tons of pressurize half an hour after pressurization, the release 10 times repeatedly.Measure the thickness situation of the inner circle of each leads, centre, outer circle after the release, get the mean value that 8 leads radially wait the measurement point of position, as the thickness average of measurement point that is positioned at the cylindrical place is than the big Xmm of thickness average of the measurement point that is positioned at inner circle, and then follow-up consideration will be mended the insulating trip of [X ÷ 0.2]+1 layer of 0.2mm.If be positioned at the thickness average of measurement point at cylindrical place than the little Ymm of thickness average of the measurement point that is positioned at inner circle, then follow-up consideration will be removed the insulating trip of [Y ÷ 0.2] layer 0.2mm, namely be positioned at the thickness average of measurement point at cylindrical place than the little 0.3mm of thickness average of the measurement point that is positioned at inner circle, then will remove the insulating trip of 1 layer of 0.2mm in follow-up the laminating.
Step 5, the punching that laminates for the third time highly basic with for the first time quite, also to fill up a layer insulating trip so laminate itself for the third time, add the number of plies that will increase or reduce that previous step calculates, as laminating total number of plies of highly required insulating trip for the third time, insulating trip is evenly arranged in each grade as far as possible.
Step 6, iron core is winched to pull-down press place, cold pressing for the third time, the top unshakable in one's determination is pressed branch such as circumference and is placed 8 leads and marking.Be forced into 47 tons of pressurize half an hour after pressurization, the release 10 times repeatedly.Measure the thickness situation of the inner circle of each leads, centre, outer circle after the release, get the mean value that 8 leads radially wait the measurement point of position, as the thickness average of measurement point that is positioned at the cylindrical place is than the big Xmm of thickness average of the measurement point that is positioned at inner circle, and then follow-up consideration will be mended the insulating trip of [X ÷ 0.2]+1 layer of 0.2mm.If be positioned at the thickness average of measurement point at cylindrical place than the little Ymm of thickness average of the measurement point that is positioned at inner circle, then follow-up consideration will be removed the insulating trip of [Y ÷ 0.2] layer 0.2mm.
Step 7, the punching that laminates for the 4th time highly basic with for the first time quite, so laminate itself and also will fill up a layer insulating trip for the 4th time, add the number of plies that will increase or reduce that previous step calculates, as laminating total number of plies of highly required pad for the 4th time, pad is evenly arranged in each grade as far as possible.
Step 8, iron core is winched to pull-down press place, carry out the 4th time and cold pressing, the top unshakable in one's determination is pressed branch such as circumference and is placed 8 leads and marking.Be forced into 47 tons of pressurize half an hour after pressurization, the release 10 times repeatedly.Measure the thickness situation of the inner circle of each leads, centre, outer circle after the release, get the mean value that 8 leads radially wait the measurement point of position, as the thickness average of measurement point that is positioned at the cylindrical place is than the big Xmm of thickness average of the measurement point that is positioned at inner circle, and then follow-up consideration will be mended the insulating trip of [X ÷ 0.2]+1 layer of 0.2mm.If be positioned at the thickness average of measurement point at cylindrical place than the little Ymm of thickness average of the measurement point that is positioned at inner circle, then follow-up consideration will be removed the insulating trip of [Y ÷ 0.2] layer 0.2mm.
Claims (1)
1. large-scale brushless exciter armature core compensation method, this large-scale brushless exciter armature core laminate and the number of times of colding pressing is n time, n 〉=2 the steps include:
Step 1, armature core is laminated to the height of colding pressing for the first time after, the armature core of folding is winched to the pull-down press together with the instrument of laminating, place at least four leads to press branches such as circumference behind the good center in the uppermost punching of armature core, carry out colding pressing the first time after putting cold pressing required pressing plate and pressure cap well;
After step 2, the press release, on every leads, equidistantly be taken to few two measurement points, these two measurement points are cylindrical place and the inner circle of the close uppermost punching of armature core respectively, measure the leads thickness of each measurement point, radially wait the measurement point of position to average on all leads, calculate the difference X of the thickness average of the thickness average of cylindrical place measurement point and inner circle measurement point, the quantity N=[X ÷ K]+1 that needs the supplementary insulation sheet when then next time laminating, wherein, [] expression round numbers, K is the thickness of insulating trip;
Step 3, take off leads after, armature core is laminated to the height that needs when colding pressing, in lamination process, increase N sheet insulating trip, insulating trip is evenly arranged as far as possible, the armature core of folding is winched to the pull-down press together with the instrument of laminating, place at least four leads to press branches such as circumference behind the good center in the uppermost punching of armature core, cold pressing after putting cold pressing required pressing plate and pressure cap well;
Step 4, after the press release, on every leads, equidistantly be taken to few two measurement points, these two measurement points are cylindrical place and the inner circle of the close uppermost punching of armature core respectively, measure the leads thickness of each measurement point, radially wait the measurement point of position to average on all leads, calculate the difference of cylindrical place measurement point and inner circle measurement point, if the thickness average of cylindrical place measurement point is than the big X of thickness average of inner circle measurement point, the quantity N=[X ÷ K]+1 that needs the supplementary insulation sheet when then next time laminating, wherein, [] expression round numbers, K is the thickness of insulating trip, if the thickness average of cylindrical place measurement point than the little Y of thickness average of inner circle measurement point, need reduce the quantity M=[Y ÷ K] of insulating trip when then laminating next time;
Step 5, repeating step 3 to step 4 laminate and cold pressing until finishing n time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110337376 CN102510178B (en) | 2011-10-31 | 2011-10-31 | Armature iron core compensating method of large-sized brushless exciter |
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| CN 201110337376 CN102510178B (en) | 2011-10-31 | 2011-10-31 | Armature iron core compensating method of large-sized brushless exciter |
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| CN110535305A (en) * | 2019-09-25 | 2019-12-03 | 浙江物产中大电机铁芯制造有限公司 | A kind of fanning strip large-size stator iron core laminated technique |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201256338Y (en) * | 2008-08-19 | 2009-06-10 | 龙口中际电工机械有限公司 | Compressing apparatus for stack thickness detection |
| CN101764473A (en) * | 2009-10-29 | 2010-06-30 | 天津市天发重型水电设备制造有限公司 | Method for laminating pole core of generator rotor of hydroelectric generating set before pre-pressing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007124788A (en) * | 2005-10-27 | 2007-05-17 | Mitsui High Tec Inc | Method for manufacturing laminated cores |
| JP2010233436A (en) * | 2009-03-05 | 2010-10-14 | Yaskawa Electric Corp | Motor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201256338Y (en) * | 2008-08-19 | 2009-06-10 | 龙口中际电工机械有限公司 | Compressing apparatus for stack thickness detection |
| CN101764473A (en) * | 2009-10-29 | 2010-06-30 | 天津市天发重型水电设备制造有限公司 | Method for laminating pole core of generator rotor of hydroelectric generating set before pre-pressing |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2007-124788A 2007.05.17 |
| JP特开2010-233436A 2010.10.14 |
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