CN107486482A - A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method - Google Patents
A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method Download PDFInfo
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- CN107486482A CN107486482A CN201710655698.4A CN201710655698A CN107486482A CN 107486482 A CN107486482 A CN 107486482A CN 201710655698 A CN201710655698 A CN 201710655698A CN 107486482 A CN107486482 A CN 107486482A
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- rotating shaft
- bending
- shaft
- dial gauge
- size
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention discloses a kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method, comprises the following steps：1）Machine shaft is checked, determines rotating shaft size, bending point and bending direction；2）By formula T2=（T×L）/ D × F calculates control parameter；3）The curved end top of rotating shaft is withstood on dial gauge, adjusts to 0, is heated with gas welding torch in rotating shaft at bending point so that dial gauge variable quantity reaches T2, stops heating, treats rotating shaft natural cooling；4）Whether qualified the bending situation of rotating shaft is detected, if unqualified repeat step 1）‑3）, until qualified.The present invention obtains known parameters in work progress by various modes, then by the way that crucial unknown control parameter T2 is calculated, then by guarantee of the work progress to T2, so as to reach the purpose being once precisely straightened；Alignment efficiency and precision are improved, and improves alignment success rate.
Description
Technical field
The present invention relates to rotating shaft heat alignment technical field, more particularly, to a kind of large-scale hot school of large-size machine rotating shaft Modeling Calculation type
Straight process.
Background technology
In motor production process, shaft bending type has：The bending of YR rotating shaft non-shaft stretching ends, vertical elongated bending shaft,
Shaft bending etc. caused by rotor assembling is improper when the bending of pivot structure part stress release, motor general assembly.Motor is reprocessed in "three guarantees"
The type of shaft bending has：Shaft extension bending, burn-out of bearing make rotating shaft violent caused by motor-shaft extending connects alignment deviation with load
Shaft bending, YR caused by heated are high, and number of pole-pairs motor causes because non-uniform air-gap causes rotor to receive unilateral magnetic force for a long time
Shaft bending etc..In the past it was that processing time is long and poor accuracy in countershaft does hot alignment process by the experience groped,
Often effectively large-size machine rotating shaft can not be effectively straightened, cause larger economic loss.So need to turn large-size machine
Axle Technology for Heating Processing carries out system improvement.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of alignment efficiency that can improve rotating shaft and is straightened precision
Large-size machine rotating shaft Modeling Calculation type heat-straightening process method.
The technical solution adopted by the present invention is：A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method, including
Following steps：
1）Machine shaft is checked, determines rotating shaft size, bending point and bending direction；
2）By formula T2=（T×L）/ D×F
Calculate control parameter, T2 be by dial gauge at the minimum point that rotating shaft end face is bent, when hot spot is heated with gas welding torch,
The numerical value that dial gauge moves to negative value direction；T is distance of the kernel of section where bending point to the curved end face center of rotating shaft, and L is curved
Distance of the kernel of section to rotating shaft end face center where song point；D is shaft diameter；F is the material coefficient of rotating shaft；
3）The end top of shaft bending one end is withstood on dial gauge, is adjusted to 0, with the gas welding torch for regulating flame, in rotating shaft
Heated at upper bending point, dial gauge variable quantity is to step 2）In the T2 that calculates, stop heating, treat rotating shaft natural cooling；
4）Whether qualified the bending situation of rotating shaft is detected, if unqualified repeat step 1）-3）, until qualified.
Compared with prior art, the beneficial effects of the invention are as follows：
A present invention pair factor related to the hot alignment of large-size machine rotating shaft first is analyzed and screened, and relevant parameter is entered
Go and explicitly defined, thoroughly studied particularly with the logical relation between each parameter, established the number between each parameter
Model is learned, in work progress, known parameters are obtained by various modes, then by the way that crucial unknown control parameter is calculated
T2, then by guarantee of the work progress to T2, so as to reach the purpose being once precisely straightened；Improve alignment efficiency and essence
Degree, and improve alignment success rate.
Brief description of the drawings
Fig. 1 is the structure chart of the bending rotating shaft of the present invention.
Embodiment
Embodiment 1
Turn folded 1 1109-11463 Y2450-4 500kW IP54 rotors set axle of class not enter, upper hydraulic press is pressed into afterwards, on lathe
Rotor shaft extension jerk value 0.30mm.
1. first check for rotor relative dimensions：（Rotating shaft material：230 round steel 45）
Rotor relative dimensions are checked on 4 meters of lathes
By dimensional measurement, illustrate that shaft extension in course of exerting pressure, is pressed into ellipse, length of shaft sized fraction shortens by shaft extension.
Check shaft extension jerk value：
Lathe beats percentage table look-up on 2.1：
Rotor shaft extension bending situation is checked on 4 meters of lathes
2. dynamic balancing machine check shaft extension bending situation on 3：
By the inspection of lathe, rotor is found not from shaft extension root bending, so systems inspection on new dynamic balancing machine is needed,
Axle stretch end is placed on bearing guard, non-shaft extension is also disposed in bearing guard, first checks for the jerk value of bearing guard.
New dynamic balancing machine checks benchmark jerk value：
More convenient than lathe inspection in dynamic balancing machine inspection, precision ensures in itself by dynamic balancing machine, so selecting new dynamic balancing machine
Correction, inspection result illustrate rotor shaft extension from bearing guard root bending.
2.4 look into axle stretch end jerk value again：
Inspection result explanation：Rotor shaft extension has a larger bending first, has a less bending from bearing guard, and this is existing
Typical " L " the type shaft bending in field, it is not the bending of straight line line.
2.5 check shaft extension bending direction：With shaft extension keyway top for 0, in shaft extension end face mark signature line, up time stylus printer hundred
Divide table look-up jerk value.
Illustrate that rotating shaft shaft extension is bent to keyway direction, mark is carried out in rotating shaft keyway back side high point and inner cap relevant position.
3. rotor placement location is changed into two bearings shelves, by T2=（T×L）/ D×F
Calculate, wherein T=0.15mm, L=140mm, D=Ф 120mm, F=3, calculate T2=0.52mm.
4 withstand on C at the top of axle stretch end with dial gauge（Size un-deformed area）, adjust to 0, with the large size for regulating flame
Gas welding torch, quick to heat at shaft bending point J, dial gauge variable quantity is 0.52mm（In heating process, it is careful not to burn rotating shaft
Melt）.
5. after rotating shaft natural cooling, it is 0.12mm to reexamine rotating shaft shaft extension top jerk value, still will beyond drawing
Ask；
6. rotor axle stretch end is placed on into inner cap shelves, it is 0.16mm to check rotating shaft shaft extension top jerk value, by T2=（T×L）/ D×F
Calculate, wherein T=0.08mm, L=389mm, D=Ф 140mm, F=3, calculate T2=0.67mm
7. withstood on dial gauge at the top of axle stretch end（Size un-deformed area）, adjust to 0, with the large size gas welding for regulating flame
Rifle is quickly heated at shaft bending point, and dial gauge variable quantity is 0.67mm, in heating process, is careful not to burn rotating shaft and is melted；
8. after rotating shaft atural beat but after, it is 0.03mm to reexamine jerk value at the top of rotating shaft shaft extension, meets drawing requirement；
9. after repairing centre bore again, the cylindrical ellipse of rotating shaft shaft extension is re-worked to drawing requirement；
10. tack, processing capacity are in 0.5mm to rotating shaft shaft extension again；Rotor flows down after the assay was approved.
Embodiment 2
Motor 1106-11251 job numbers, rotating shaft material are 35 steel, and collector ring outside diameter runout is 0.15mm, beyond drawing 0.05
It is required that it is Ф 90mm, length 243mm that it is cylindrical, which to find rotating shaft collector ring shelves, height of the dial gauge in collector ring shelves end is beaten first
Point, by T2=（T×L）/ D × F is calculated, and is drawn T2=0.506mm, is heated at actual countershaft bending point, to dial gauge variable quantity
Detect the non-0.02mm of collector ring outside diameter runout again after 0.56mm, after cooling, it is qualified to examine.
Claims (1)
1. a kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method, comprises the following steps：
1）Machine shaft is checked, determines rotating shaft size, bending point and bending direction；
2）By formula T2=（T×L）/ D×F
Calculate control parameter, T2 be by dial gauge at the minimum point that rotating shaft end face is bent, when hot spot is heated with gas welding torch,
The numerical value that dial gauge moves to negative value direction；T is distance of the kernel of section where bending point to the curved end face center of rotating shaft, and L is curved
Distance of the kernel of section to rotating shaft end face center where song point；D is shaft diameter；F is the material coefficient of rotating shaft；
3）The end top of shaft bending one end is withstood on dial gauge, is adjusted to 0, with regulating the gas welding torch of flame in rotating shaft
Heated at bending point so that dial gauge variable quantity reaches step 2）In the T2 that calculates, stop heating, treat rotating shaft natural cooling；
4）Whether qualified the bending situation of rotating shaft is detected, if unqualified repeat step 1）-3）, until qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710655698.4A CN107486482A (en) | 2017-08-03 | 2017-08-03 | A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710655698.4A CN107486482A (en) | 2017-08-03 | 2017-08-03 | A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107486482A true CN107486482A (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710655698.4A Pending CN107486482A (en) | 2017-08-03 | 2017-08-03 | A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method |
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| CN (1) | CN107486482A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931373A (en) * | 2017-12-22 | 2018-04-20 | 沈阳透平机械股份有限公司 | The aligning method of elastic bending to the centrifugal blower main shaft after assembling impeller |
| CN108856367A (en) * | 2018-05-24 | 2018-11-23 | 哈尔滨汽轮机厂有限责任公司 | A kind of valve rod bending deformation straightening technology |
| CN109967562A (en) * | 2019-02-21 | 2019-07-05 | 大唐湘潭发电有限责任公司 | Heat rapid cooling d-axis method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003225709A (en) * | 2002-01-30 | 2003-08-12 | Sanbo Copper Alloy Co Ltd | Method of straightly reforming high strength copper alloy rod |
| RU2374022C1 (en) * | 2008-04-15 | 2009-11-27 | Открытое Акционерное Общество "Корпорация Всмпо-Ависма" | Method for flattening of short-cut pipes |
| CN204892616U (en) * | 2015-08-28 | 2015-12-23 | 江西耀升钨业股份有限公司 | Alloy rod is with high -efficient automatic alignment household utensils device |
| CN205008430U (en) * | 2015-10-09 | 2016-02-03 | 西部钛业有限责任公司 | Tubular product thermal treatment straightener |
-
2017
- 2017-08-03 CN CN201710655698.4A patent/CN107486482A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003225709A (en) * | 2002-01-30 | 2003-08-12 | Sanbo Copper Alloy Co Ltd | Method of straightly reforming high strength copper alloy rod |
| RU2374022C1 (en) * | 2008-04-15 | 2009-11-27 | Открытое Акционерное Общество "Корпорация Всмпо-Ависма" | Method for flattening of short-cut pipes |
| CN204892616U (en) * | 2015-08-28 | 2015-12-23 | 江西耀升钨业股份有限公司 | Alloy rod is with high -efficient automatic alignment household utensils device |
| CN205008430U (en) * | 2015-10-09 | 2016-02-03 | 西部钛业有限责任公司 | Tubular product thermal treatment straightener |
Non-Patent Citations (1)
| Title |
|---|
| 李俊: "中型电机转轴热校直工艺研究", 《中国高新技术企业》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931373A (en) * | 2017-12-22 | 2018-04-20 | 沈阳透平机械股份有限公司 | The aligning method of elastic bending to the centrifugal blower main shaft after assembling impeller |
| CN107931373B (en) * | 2017-12-22 | 2019-05-31 | 沈阳透平机械股份有限公司 | To the aligning method of the elastic bending of the centrifugal blower main shaft after assembly impeller |
| CN108856367A (en) * | 2018-05-24 | 2018-11-23 | 哈尔滨汽轮机厂有限责任公司 | A kind of valve rod bending deformation straightening technology |
| CN109967562A (en) * | 2019-02-21 | 2019-07-05 | 大唐湘潭发电有限责任公司 | Heat rapid cooling d-axis method |
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Application publication date: 20171219 |