CN102319986A - Method for cold-working double-R curved surface part - Google Patents
Method for cold-working double-R curved surface part Download PDFInfo
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- CN102319986A CN102319986A CN201110246324A CN201110246324A CN102319986A CN 102319986 A CN102319986 A CN 102319986A CN 201110246324 A CN201110246324 A CN 201110246324A CN 201110246324 A CN201110246324 A CN 201110246324A CN 102319986 A CN102319986 A CN 102319986A
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Abstract
The invention discloses a method for cold-working a double-R curved surface part and belongs to the field of a manufacturing method of the double-R curved surface part. The method for cold-working the double-R curved surface part, which is disclosed by the invention, is implemented by the following steps of: 1, manufacturing blanks; 2, manufacturing blank pieces; 3, carrying out abutting joint on the blank pieces and carrying out back-to-back spot welding fixing; 4, making the obtained product into an arc shape on a plate bending roll, numbering and splitting into a single clack sheet; 5, checking and carrying out local calibration processing. The method for cold-working the double-R curved surface part, which is disclosed by the invention, is simple and convenient to operate, has high working efficiency, low energy consumption and low cost, and is suitable for the cold-working processing of the double-R curved surface part with the nominal diameter of over 10 meters. Due to the adoption of the method, the heat processing of the part can be avoided, the working efficiency can be improved, the energy is saved and the consumption is reduced. The application range of the method is wide.
Description
Technical field
The present invention relates to have the preparation method of the workpiece of two R curved surfaces, especially a kind of cold-working method with workpiece of two R curved surfaces.
Background technology
Related two R curve surface work pieces among the present invention are meant the workpiece that is designed, and it has two arcwall faces; And two arcwall faces are of Figure 11 not on same direction, two R curve surface work pieces of indication among the present invention; Its two arc surfaces are vertical each other, therefore will guarantee that two arc surfaces all reach requirement, and difficulty is very big; Particularly, particularly hard to manage at two arc surface infalls.
At present; For the workpiece with two R curved surfaces, traditional forming technique is on forcing press, to adopt the mould press forming, and this technology mainly contains following disadvantage: the big or bigger material of thickness for springback capacity; Hot forming need be carried out, also restorability heat treatment need be carried out after the shaping; Mfg. moulding die is complicated, and cost is expensive, and in heating and restorability heat treatment process, energy resource consumption is bigger, once only can suppress a slice, and operating efficiency is not high.
When big, particularly nominal diameter is greater than 10 meters two R curve surface work pieces, if adopt the mould manufacturing for the workpiece volume; As shown in Figure 3, it is very big that its mould (traditional punching press counterdie 4 and traditional punching press patrix 5) need be done, and cost is quite expensive; And, in heat treated process, be easy to generate local deformation because the volume of workpiece is bigger; Or unbalance stress, the stability of handling the back workpiece is not high, can not satisfy the demands.
Summary of the invention
Goal of the invention of the present invention is: the problem to above-mentioned existence provides a kind of easy and simple to handle, high efficiency; And power consumption is few; Nominal diameter with low cost adopts this method can avoid the hot-working of workpiece greater than the cold-working method of two R curve surface work pieces of 10 meters, can increase work efficiency; Energy-saving and cost-reducing, the scope of application is wide.
The technical scheme that the present invention adopts is following:
The cold-working method of of the present invention pair of R curve surface work pieces, realize through following steps:
1) cutting stock, machining remove the cutting heat affected area, are processed into groove, process blank;
2) blank is placed on the compacting tool set, cooperate through compacting tool set counterdie, compacting tool set patrix, adopt the auxiliary bending of frock, it is short on one side to make that blank forms a length of side, and the orthogonal blank in both sides, forms transition arc between the both sides of said blank;
3) then the end of 2 or 4 or 6 or 8 compact spares is docked successively, fix two back-to-back spot welding of workpiece after the butt joint;
4) again on veneer reeling machine the veneer reeling machine lower roll through rolling mould with roll upper mould and cooperate, and utilize support ring to roll into arc, the Ban Jing ≧ 5m of this arc, and numbering, split into single limb;
5) form variations of inspection limb adopts local school shape frock to carry out local school shape to the limb that exceeds standard and handles.
Owing to adopted said method, whole process does not relate to hot-working, 6 or 8 distinguish that once can be shaped, the mould of use is simple and can be used for the product manufacturing of plurality of specifications, thus reach avoid hot-working, increase work efficiency, energy saving purposes.The cold-working method of of the present invention pair of R curve surface work pieces at first avoids material influenced because of the hot-working performance, thereby realizes energy-saving and cost-reducing; Secondly can increase work efficiency and the worker assembling structure simple, applied widely, thereby reduce manufacturing cost.Of the present invention pair of R curve surface work pieces, earlier through compacting tool set, it is short on one side that blank is formed a length of side, and the orthogonal blank in both sides; Be transition arc between the both sides, formed first R curved surface, again the end of a plurality of blanks is welded successively fixingly, on veneer reeling machine, process the arc of Ban Jing ≧ 5m; Also be that every limb has formed second R curved surface, and the Ban Jing ≧ 5m of this R curved surface, i.e. Zhi Jing ≧ 10m; With the butt-end of the limb of a plurality of monolithics, can form the annulus of Zhi Jing ≧ 10m, therefore after the whole work-piece completion; In conjunction with cylindrical shell and floor, can form diameter columnar structured more than or equal to 10mm, so the present invention can be fit to the cold-working processing of nominal diameter greater than two R curve surface work pieces of 10 meters; Because first curved surface first step is pressed into, when making second curved surface on the veneer reeling machine again, owing to roll through veneer reeling machine; Along being formed centrally in the process of circular arc in second curved surface, make slowly to form circular arc on the vertical direction of the transition arc face appearance of winning, promptly the outer indumentum of this transition arc is rolled up curved equably; Final second cambered surface that forms, so the junction transition of two circular arcs is even gently, and easily manufactured quick.The cold-working method of of the present invention pair of R curve surface work pieces, easy and simple to handle, high efficiency, and power consumption is few, with low cost, is fit to the cold-working processing of nominal diameter greater than two R curve surface work pieces of 10 meters.
The cold-working method of of the present invention pair of R curve surface work pieces, in the step 3), spot welding adopts arc welding or argon arc welding to carry out; And during welding, humidity is not more than 50%; And in welding process, back to the junction of two workpiece, every interval 150～200mm, the length of welding 30～50mm.
Owing to adopted said method, satisfy humidity smaller or equal to 50% situation under, can guarantee to weld firmly, and will back to the junction of two workpiece; Section welding between employing, promptly every interval 150～200mm, the length of welding 30～50mm; Guarantee back to two workpiece firmly after, guarantee that subsequent handling in dismounting, can disassemble easily; Simultaneously not can to back to two workpiece cause damage, guarantee that whole operation is accomplished after, the product of being produced reaches requirement.
The cold-working method of of the present invention pair of R curve surface work pieces, in the step 5), the form variations of the limb of checking is the arc length deviation≤5mm of the arc of single limb, the perpendicularity deviation≤2mm between long limit and the minor face, the arc length deviation≤1mm of transition arc.
Owing to adopted said method, has only the arc length deviation of the arc of the single limb of checking out, the perpendicularity deviation between long limit and the minor face; The arc length deviation of transition arc reaches requirement, and promptly the arc length deviation≤5mm of the arc of single limb grows the perpendicularity deviation≤2mm between limit and the minor face; Arc length deviation≤the 1mm of transition arc can guarantee that every limb can reach the needs of production, just need not to handle through school shape; Otherwise; Need single limb be carried out local school shape and handle, make it reach standard, satisfy the production needs.
In sum, owing to adopted technique scheme, the invention has the beneficial effects as follows:
1. the cold-working method of of the present invention pair of R curve surface work pieces, easy and simple to handle, high efficiency, and power consumption is few, with low cost;
2. the cold-working method of of the present invention pair of R curve surface work pieces is fit to the cold-working processing of nominal diameter greater than two R curve surface work pieces of 10 meters, adopts this method can avoid the hot-working of workpiece, can increase work efficiency, and energy-saving and cost-reducing, the scope of application is wide.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the sketch map that product that the present invention makes is used in engineering;
Fig. 2 is product (changeover portion) structural representation that the present invention makes;
Fig. 3 is traditional shaping dies structural representation of this type of infrastructure product;
Fig. 4 is the structural representation of compacting tool set of the present invention;
Fig. 5 is the structural representation that the present invention rolls mould;
Fig. 6 is the local school of a present invention shape tool structure sketch map;
The blank of making among Fig. 7 the present invention;
The blank of making among Fig. 8 the present invention;
Object among Fig. 9 the present invention after the welding;
Process the object behind the circular arc among Figure 10 the present invention;
The article that Figure 11 the present invention is made with two R curved surfaces;
Figure 12 is the upward view of Figure 11;
Mark among the figure: 1-changeover portion, 2-cylindrical shell, 3-base plate, 4-tradition punching press counterdie, 5-tradition punching press patrix, 6-compacting tool set (counterdie), 7-compacting tool set (patrix), 8-support ring, 9-veneer reeling machine lower roll, 10-workpiece (changeover portion distinguish), 11-locating ring, 12-roll mould (patrix), 13-veneer reeling machine top roll, 14-school shape frock support platform, 15-adjustment cushion block, 16-and treat gyp's part (changeover portion arc distinguish), 17-school shape frock patrix.
The specific embodiment
Disclosed all characteristics in this specification, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this specification (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
Like Fig. 1, Fig. 2, Fig. 4 to shown in Figure 11, the cold-working method of of the present invention pair of R curve surface work pieces, realize through following steps:
1) cutting stock, machining remove the cutting heat affected area, are processed into groove, process blank;
2) blank is placed on the compacting tool set; Cooperate through compacting tool set counterdie 6, compacting tool set patrix 7, adopt the auxiliary bending of frock, it is short on one side to make that blank forms a length of side; And the orthogonal blank in both sides; Form transition arc between the both sides of said blank, the Ban Jing ≧ 5m of this transition arc forms first curved surface of this workpiece;
3) then the end of 2 or 4 or 6 or 8 compact spares is docked successively and (adopt the end of 6 compact spares to dock successively in this example; Certainly according to principle of the present invention; Can adopt the blank of even numbered blocks such as 2 or 4 or 6 or 8 or 10 to be welded to each other); Make the end of adjacent two compact spares dock each other, fix two back-to-back spot welding of workpiece after the butt joint that weldering adopts arc welding or argon arc welding to carry out; And during welding, humidity is not more than 50%; And in welding process, back to the junction of two workpiece, every interval 150～200mm, the length of welding 30～50mm;
4) again on veneer reeling machine the veneer reeling machine lower roll 9 through rolling mould with roll upper mould 12 and cooperate; And utilize support ring 8 to roll into arc; Make the Ban Jing ≧ 5m of this arc, form second curved surface of this workpiece, i.e. the Zhi Jing ≧ 10m of this curved surface; The Hu shape Ban Jing ≧ 5m of second of each limb curved surface just, and numbering, split into single limb;
5) form variations of inspection limb; Arc length deviation≤5mm with the arc that satisfies single limb; Perpendicularity deviation≤2mm between long limit and the minor face, the arc length deviation≤1mm of transition arc handles otherwise adopt local school shape frock to carry out local school shape to the limb that exceeds standard.
The cold-working method of of the present invention pair of R curve surface work pieces is made blank as shown in Figure 7 earlier, needs machining to remove the cutting heat affected area around the blank; And mechanical finished edge; Said groove is two " V " the shape structure, groove adopts milling machine and planer to process, and the finished size precision meets design requirement; And on blank, change system bending baseline, put the position when being used for compacting tool set; On compacting tool set shown in Figure 4, be pressed into blank as shown in Figure 8 then, the center line of transition arc just is this bending baseline in this blank, forms first cambered surface of workpiece of the present invention; Then 6 compact spare assembly weldings are become Workpiece structure as shown in Figure 9,, also can adopt the compact spare assembly welding of other even numbered blocks to become certainly according to this principle; On frock as shown in Figure 5, roll the shaping orthodrome again, the back structure shown in figure 10 that is shaped has also promptly formed second circular arc of this workpiece; And the radius of this circular arc is more than or equal to 5mm, and also promptly the diameter of this circular arc makes that more than or equal to 10mm whole work-piece is a nominal diameter greater than two R curve surface work pieces of 10 meters; Cut into piecemeal along piece again, shown in figure 11, check each block size at last; The distinguish that dimensional discrepancy is exceeded standard gets final product frock colonel's shape shown in Figure 6; With the circular arc of after the assay was approved workpiece splicing can formation diameter more than or equal to 10 meters, when combining cylindrical shell and floor, it is columnar structured greater than 10 meters to process nominal diameter; Therefore the cold-working method of of the present invention pair of R curve surface work pieces is fit to the cold-working processing of nominal diameter greater than two R curve surface work pieces of 10 meters.
The cold-working method of of the present invention pair of R curve surface work pieces, easy and simple to handle, high efficiency, and power consumption is few, with low cost; Be fit to the cold-working processing of nominal diameter greater than two R curve surface work pieces of 10 meters, adopt this method can avoid the hot-working of workpiece, can increase work efficiency, energy-saving and cost-reducing, the scope of application is wide.The cold-working method of of the present invention pair of R curve surface work pieces has advantages such as low cost of manufacture, efficient is high, size is controlled easily, transition position steel plate attenuate amount is little.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (3)
1. the cold-working method of two R curve surface work pieces is characterized in that: realize through following steps:
Cutting stock, machining remove the cutting heat affected area, are processed into groove, process blank;
Blank is placed on the compacting tool set, cooperate through compacting tool set counterdie (6), compacting tool set patrix (7), adopt the auxiliary bending of frock, it is short on one side to make that blank forms a length of side, and the orthogonal blank in both sides, forms transition arc between the both sides of said blank;
Then the end of 2 or 4 or 6 or 8 compact spares is docked successively, fix two back-to-back spot welding of workpiece after the butt joint;
Again on veneer reeling machine the veneer reeling machine lower roll (9) through rolling mould with roll upper mould (12) and cooperate, and utilize support ring (8) to roll into arc, the Ban Jing ≧ 5m of this arc, and numbering, split into single limb;
The form variations of inspection limb adopts local school shape frock to carry out local school shape to the limb that exceeds standard and handles.
2. the cold-working method of as claimed in claim 1 pair of R curve surface work pieces is characterized in that: in the step 3), spot welding adopts arc welding or argon arc welding to carry out; And during welding, humidity is not more than 50%; And in welding process, back to the junction of two workpiece, every interval 150～200mm, the length of welding 30～50mm.
3. according to claim 1 or claim 2 the cold-working method of two R curve surface work pieces; It is characterized in that: in the step 5), the form variations of the limb of checking is the arc length deviation≤5mm of the arc of single limb; Perpendicularity deviation≤2mm between long limit and the minor face, the arc length deviation≤1mm of transition arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110246324 CN102319986B (en) | 2011-08-25 | 2011-08-25 | Method for cold-working double-R curved surface part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110246324 CN102319986B (en) | 2011-08-25 | 2011-08-25 | Method for cold-working double-R curved surface part |
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| CN102319986A true CN102319986A (en) | 2012-01-18 |
| CN102319986B CN102319986B (en) | 2013-04-10 |
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| CN 201110246324 Active CN102319986B (en) | 2011-08-25 | 2011-08-25 | Method for cold-working double-R curved surface part |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286643A (en) * | 2013-05-20 | 2013-09-11 | 安徽汇精模具研发科技有限公司 | Grinding process of bending block |
| CN106181232A (en) * | 2016-07-07 | 2016-12-07 | 淮北海聚环保设备有限公司 | Environmental protection equipment is by interior external mold mould production technology |
| CN113084451A (en) * | 2021-03-03 | 2021-07-09 | 山西汾西重工有限责任公司 | Forming method |
| CN115533279A (en) * | 2022-11-24 | 2022-12-30 | 四川科新机电股份有限公司 | Deformation-preventing assembly welding method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006000951A (en) * | 2004-06-16 | 2006-01-05 | Fuji Electric Holdings Co Ltd | Molding device |
| CN101708518A (en) * | 2009-12-18 | 2010-05-19 | 赵少峰 | Novel deep stretching process of curved surface |
| CN101829720A (en) * | 2009-03-09 | 2010-09-15 | 吉林大学 | Method for controlling springback of reverse bending sections of hyperboloid |
-
2011
- 2011-08-25 CN CN 201110246324 patent/CN102319986B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006000951A (en) * | 2004-06-16 | 2006-01-05 | Fuji Electric Holdings Co Ltd | Molding device |
| CN101829720A (en) * | 2009-03-09 | 2010-09-15 | 吉林大学 | Method for controlling springback of reverse bending sections of hyperboloid |
| CN101708518A (en) * | 2009-12-18 | 2010-05-19 | 赵少峰 | Novel deep stretching process of curved surface |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286643A (en) * | 2013-05-20 | 2013-09-11 | 安徽汇精模具研发科技有限公司 | Grinding process of bending block |
| CN103286643B (en) * | 2013-05-20 | 2016-01-06 | 安徽汇精模具研发科技有限公司 | A kind of grinding technics of folded block |
| CN106181232A (en) * | 2016-07-07 | 2016-12-07 | 淮北海聚环保设备有限公司 | Environmental protection equipment is by interior external mold mould production technology |
| CN113084451A (en) * | 2021-03-03 | 2021-07-09 | 山西汾西重工有限责任公司 | Forming method |
| CN113084451B (en) * | 2021-03-03 | 2022-07-29 | 山西汾西重工有限责任公司 | Forming method |
| CN115533279A (en) * | 2022-11-24 | 2022-12-30 | 四川科新机电股份有限公司 | Deformation-preventing assembly welding method |
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| CN102319986B (en) | 2013-04-10 |
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