CN106734372B - A kind of shaping methods of transformer L-type bending workpieces - Google Patents
A kind of shaping methods of transformer L-type bending workpieces Download PDFInfo
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- CN106734372B CN106734372B CN201611157978.4A CN201611157978A CN106734372B CN 106734372 B CN106734372 B CN 106734372B CN 201611157978 A CN201611157978 A CN 201611157978A CN 106734372 B CN106734372 B CN 106734372B
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- bending
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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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The present invention relates to a kind of shaping methods of transformer L-type bending workpieces, belong to steel member manufacturing technology field.Technical solution is：Transformer L-type bending workpieces are made, after steel plate bending, steel plate forms bending side（11）With non-bending side（12）Two parts correct transformer L-type bending workpieces using the thermal expansion and contraction principle of steel plate if two ends of bending steel plate are deviated to bending side；To flame heating in position among the non-bending side steel plate of transformer L-type bending workpieces, after cooling, position among transformer L-type bending workpieces is made to be moved to bending side, finally so that transformer L-type bending workpieces flatness is met the requirements.The positive effect of the present invention：Bending workpieces flatness is corrected by way of flame heating steel sheet workpiece, bending steel plate is made to meet requirement；The flatness of transformer L-type bending workpieces reaches 2mm after correction.
Description
Technical field
The present invention relates to a kind of shaping methods of transformer L-type bending workpieces, belong to steel member manufacturing technology field.
Background technology
Currently, many parts are the steel plate workpiece of L-type bending structure in transformer, form is shown in attached drawing 1, for example, shell becomes
Tank wall, ABB tank walls, direct current folder oil guiding box etc..The making of L-type bending workpieces, be first pass through the mode blanking of gas flame cuttiug, then
Bending is carried out by bender.After bending, L-type steel plate deforms, and bending steel plate both ends are deviated to bending side, with reference to attached drawing
2, cause flatness undesirable, cannot be satisfied requirement.
Invention content
The object of the present invention is to provide a kind of shaping methods of transformer L-type bending workpieces, pass through flame heating steel sheet work
The mode of part corrects bending workpieces flatness, and bending steel plate is made to meet requirement, solves the above problem existing for background technology.
The technical scheme is that：
A kind of shaping methods of transformer L-type bending workpieces, operating method are as follows：
1. making transformer L-type bending workpieces, after steel plate bending, steel plate forms bending side and non-bending side two parts, such as
Two ends of fruit bending steel plate are deviated to bending side, are rectified to transformer L-type bending workpieces using the thermal expansion and contraction principle of steel plate
Just；Transformer L-type bending workpieces are made after cooling to position flame heating among the non-bending side steel plate of transformer L-type bending workpieces
Intermediate position is moved to bending side, finally so that transformer L-type bending workpieces flatness is met the requirements；
2. correct, the surface at circular arc position and non-bending side to bending surface of steel plate carries out flame heating, temperature 250
℃-300℃；Wherein：The surface of steel plate of circular arc position and non-bending side close to circular arc position is heated using linear, and non-bending side is leaned on
The surface of steel plate at nearly circular arc position is the 1/3 of non-bending side width using the range of linear heating；Non- bending side is far from arc sections
The surface of steel plate of position uses dotted heating, non-surface of steel plate of the bending side far from circular arc position to use the range right and wrong of dotted heating
The 2/3 of bending side width.
The linear heating, is that heating flame linearly moves, is heated to surface of steel plate.
The dotted heating, is that heating flame is aligned a bit, does not move, and a heating, heating is fixed to surface of steel plate
After the completion, then to adjacent another point it heats, is sequentially completed multipoint heating.
Two ends of bending steel plate are deviated to bending side, be should be after gas cutting inside steel plate there are caused by stress, are utilized
The thermal expansion and contraction principle of steel plate selects the operating method of innovation, is corrected to transformer L-type bending workpieces, transformer L-type after correction
The flatness of bending workpieces reaches 2mm.
The positive effect of the present invention：Bending workpieces flatness is corrected by way of flame heating steel sheet workpiece, makes bending
Steel plate meets requirement.
Description of the drawings
Fig. 1 is transformer L-type bending workpieces schematic diagram of the present invention；
Fig. 2 be transformer L-type bending workpieces bending of the present invention after deform schematic diagram；
Fig. 3 is that transformer L-type bending workpieces of the embodiment of the present invention correct schematic diagram；
In figure：Bending side 11, non-bending side 12, linear heating 13, dotted heating 14.
Specific implementation mode
The present invention is described further with reference to the accompanying drawings and examples：
A kind of shaping methods of transformer L-type bending workpieces, operating method are as follows：
1. making transformer L-type bending workpieces, after steel plate bending, steel plate forms bending side 11 and non-bending side 12 two
Point, if two ends of bending steel plate are deviated to bending side, using the thermal expansion and contraction principle of steel plate to transformer L-type bender
Part is corrected；Transformer L-type bending is made after cooling to position flame heating among the non-bending side steel plate of transformer L-type bending workpieces
Position is moved to bending side among workpiece, finally so that transformer L-type bending workpieces flatness is met the requirements；
2. correct, the surface at circular arc position and non-bending side to bending surface of steel plate carries out flame heating, temperature 250
℃-300℃；Wherein：The surface of steel plate of circular arc position and non-bending side close to circular arc position heats 13 using linear, non-bending side
The range that surface of steel plate close to circular arc position is heated using threadiness is the 1/3 of non-bending side width；Non- bending side is far from circular arc
The surface of steel plate at position uses the range of dotted heating using dotted heating 14, non-surface of steel plate of the bending side far from circular arc position
It is the 2/3 of non-bending side width.
The linear heating 13, is that heating flame linearly moves, is heated to surface of steel plate.
The dotted heating 14, is that heating flame is aligned a bit, does not move, and a heating is fixed to surface of steel plate, adds
After the completion of heat, then adjacent another point is heated, is sequentially completed multipoint heating.
Two ends of bending steel plate are deviated to bending side, be should be after gas cutting inside steel plate there are caused by stress, are utilized
The thermal expansion and contraction principle of steel plate selects the operating method of innovation, is corrected to transformer L-type bending workpieces, transformer L-type after correction
The flatness of bending workpieces reaches 2mm.
Claims (2)
1. a kind of shaping methods of transformer L-type bending workpieces, it is characterised in that operating method is as follows：
1. making transformer L-type bending workpieces, after steel plate bending, steel plate forms bending side（11）With non-bending side（12）Two
Point, if two ends of bending steel plate are deviated to bending side, using the thermal expansion and contraction principle of steel plate to transformer L-type bender
Part is corrected；Transformer L-type bending is made after cooling to position flame heating among the non-bending side steel plate of transformer L-type bending workpieces
Position is moved to bending side among workpiece, finally so that transformer L-type bending workpieces flatness is met the requirements；
2. correct, the surface at circular arc position and non-bending side to bending surface of steel plate carries out flame heating, 250 DEG C of temperature-
300℃；Wherein：The surface of steel plate of circular arc position and non-bending side close to circular arc position is heated using linear（13）, non-bending side
The range that surface of steel plate close to circular arc position is heated using threadiness is the 1/3 of non-bending side width；Non- bending side is far from circular arc
The surface of steel plate at position uses dotted heating（14）, non-surface of steel plate of the bending side far from circular arc position use dotted heating model
Enclose is the 2/3 of non-bending side width.
2. a kind of shaping methods of transformer L-type bending workpieces according to claim 1, it is characterised in that the threadiness adds
Heat（13）, it is that heating flame linearly moves, surface of steel plate is heated；The dotted heating（14）, it is heating fire
Flame is aligned a bit, is not moved, and a heating is fixed to surface of steel plate, after the completion of heating, then adds to adjacent another point
Heat is sequentially completed multipoint heating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611157978.4A CN106734372B (en) | 2016-12-15 | 2016-12-15 | A kind of shaping methods of transformer L-type bending workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611157978.4A CN106734372B (en) | 2016-12-15 | 2016-12-15 | A kind of shaping methods of transformer L-type bending workpieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106734372A CN106734372A (en) | 2017-05-31 |
| CN106734372B true CN106734372B (en) | 2018-07-17 |
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|---|---|---|---|
| CN201611157978.4A Active CN106734372B (en) | 2016-12-15 | 2016-12-15 | A kind of shaping methods of transformer L-type bending workpieces |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304554B (en) * | 2018-12-05 | 2021-03-23 | 保定天威保变电气股份有限公司 | Method for repairing post-welding angle deviation of transformer lifting seat |
| CN115971292B (en) * | 2023-03-17 | 2023-07-18 | 常州思源东芝变压器有限公司 | Power transformer shell forming and processing equipment |
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| US4078950A (en) * | 1976-08-26 | 1978-03-14 | Union Carbide Corporation | Spot scarfing nozzle for use in gang arrangement |
| US6675625B1 (en) * | 2002-11-11 | 2004-01-13 | Ford Motor Company | Method and arrangement for changing the shape of thin-shell articles manufactured by spray-form techniques |
| CN102463276A (en) * | 2010-11-15 | 2012-05-23 | 中国北车集团大同电力机车有限责任公司 | Manufacturing method of a bent part and bending machine |
| CN204602937U (en) * | 2015-02-05 | 2015-09-02 | 江门市南洋船舶工程有限公司 | A kind of round steel thermal flexure device for the manufacture of ship's outfit |
| CN105478531A (en) * | 2015-12-17 | 2016-04-13 | 保定天威电气设备结构有限公司 | Shaping method used after deformation of copper shield used for transformer |
| CN205393221U (en) * | 2016-03-10 | 2016-07-27 | 上海江南长兴重工有限责任公司 | Coverboard denting deformation attacks with fire to correct and uses frock |
-
2016
- 2016-12-15 CN CN201611157978.4A patent/CN106734372B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4078950A (en) * | 1976-08-26 | 1978-03-14 | Union Carbide Corporation | Spot scarfing nozzle for use in gang arrangement |
| US6675625B1 (en) * | 2002-11-11 | 2004-01-13 | Ford Motor Company | Method and arrangement for changing the shape of thin-shell articles manufactured by spray-form techniques |
| CN102463276A (en) * | 2010-11-15 | 2012-05-23 | 中国北车集团大同电力机车有限责任公司 | Manufacturing method of a bent part and bending machine |
| CN204602937U (en) * | 2015-02-05 | 2015-09-02 | 江门市南洋船舶工程有限公司 | A kind of round steel thermal flexure device for the manufacture of ship's outfit |
| CN105478531A (en) * | 2015-12-17 | 2016-04-13 | 保定天威电气设备结构有限公司 | Shaping method used after deformation of copper shield used for transformer |
| CN205393221U (en) * | 2016-03-10 | 2016-07-27 | 上海江南长兴重工有限责任公司 | Coverboard denting deformation attacks with fire to correct and uses frock |
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| CN106734372A (en) | 2017-05-31 |
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Effective date of registration: 20191031 Address after: 071056 No. 2222 Print-Rite West Road, Hebei, Baoding Patentee after: Baoding Tianwei Baobian Electric Co., Ltd. Address before: 071056, No. 2222 Print-Rite West Road, Xinshi District, Hebei, Baoding Patentee before: Baoding Tianwei Electrical Equipment Structure Co.,Ltd. |