CN1559717A - Method for correcting workpiece crosssection shape of pipe bended by pipe bending machine - Google Patents
Method for correcting workpiece crosssection shape of pipe bended by pipe bending machine Download PDFInfo
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- CN1559717A CN1559717A CNA2004100128069A CN200410012806A CN1559717A CN 1559717 A CN1559717 A CN 1559717A CN A2004100128069 A CNA2004100128069 A CN A2004100128069A CN 200410012806 A CN200410012806 A CN 200410012806A CN 1559717 A CN1559717 A CN 1559717A
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Abstract
A method for correcting the cross section of workpiece (metal pipe) bent by pipe bender features that 1-5 pairs of correcting dies or roller are arranged before and/or after bending pipe for reverse deformation, each pair of correcting dies or rollers are arranged at both sides of the longer axis of the deformed workpiece and moves in the direction of said longer axis.
Description
Technical field
The present invention relates to a kind of bending machine carries out crooked workpiece cross sectional shape to metal pipe material antidote.
Background technology
Existing bending machine has various versions, as pushes away curved, stretch bending, rolls curvedly etc., also has hot bending, the various processes of clod wash.The bending machine of structure or adopt what process whatsoever, workpiece 1 its cross sectional shape in BENDING PROCESS can change, become ellipse (as shown in Figure 1 and Figure 2) as circle, influence the quality of workpiece, cross sectional shape changes greatly when light-wall pipe, large diameter pipe, deep camber bend pipe.
Existing bending machine adopts plug, methods such as fill material prevent the variation of workpiece cross sectional shape, configuration work piece correcting device is also arranged, adopt and a pair of or some mould with workpiece similar shape is corrected workpiece or reversible deformation (before the workpiece bending cross sectional shape being out of shape in the other direction), correct the layout of mould 2, the short-axis direction of the direction of motion of mould behind the workpiece section deformation, corrective force acts on the thinnest part of the rectification mould that contacts with long axis direction behind the workpiece section deformation, be not easy to solve the influence of deformation resilience amount to workpiece section deformation quality, mould and workpiece have bigger frictional resistance.
When bend pipe is not that pressure or liquid, gas material are mobile in pipe in bearing, but bear external force as structural member, for example bend pipe bears uniform load as the curved beam of Bifrost, external force acts on the short-axis direction of (ellipse) of cross sectional shape after the round steel pipe flexural deformation, and these strength and stiffness to curved beam are disadvantageous.
Summary of the invention
The invention provides a kind of antidote of bending machine workpiece cross sectional shape, solution in correcting process the deformation resilience amount to the influence (promptly can be strong excessively) of workpiece section deformation, reduce the frictional resistance of mould and workpiece, improve intensity, rigidity and the life-span of correcting mould.
To achieve these goals, technical scheme of the present invention is: the antidote of bending machine workpiece cross sectional shape, adopt 1-5 to correct or reversible deformation, correct mould or roller can be located at before or after the bending of bending machine workpiece or two places, front and back for every pair correcting mould or pair of rollers workpiece; It is characterized in that: every pair of major axis both sides of correcting after mould or roller are positioned at the workpiece section deformation, the every pair of direction of motion of correcting mould or roller long axis direction behind the workpiece section deformation.
Every pair of corrective force of correcting mould or roller is the rectification internal force of a pair of opposite sign but equal magnitude, and every pair of symmetrical centre of correcting mould or roller keeps symmetrical centre constant in correcting process in the plane of minor axis.
The normal direction that the every pair of axis of rotation of correcting mould or roller itself is placed on the bend pipe elastic line is the radius R direction of bend pipe, and the every pair of rectification mould or roller move along elbow radius R direction.
When batch workpiece is big, correct mould and also can make a pair of roughly rectification mould of the compound bending of the certain-length of cross sectional shape and the same bending curvature of workpiece of workpiece that has, the rectification of section between workpiece is carried out, promptly curved one section pipe stops and rectifys one section pipe.
The present invention adopts said method, and 1, the contact area of correcting mould or roller and workpiece is little, required corrective force is littler than original rectification mould, reduces the frictional resistance of mould and workpiece, intensity, rigidity and the life-span of raising rectification mould.2, solution deformation resilience amount in correcting process not only can be corrected circular cross sectional shape to the influence (promptly can be strong excessively) of workpiece section deformation, can also make the major axis of elliptic cross-section become minor axis, and minor axis becomes major axis.
When the bend pipe of plane, for guaranteeing the plane precision of curved workpieces, every pair of corrective force of correcting mould or roller should become the rectification internal force of a pair of opposite sign but equal magnitude, every pair of symmetrical centre of correcting mould or roller should be in the plane of minor axis, in correcting process, should keep symmetrical centre constant, workpiece is not bent at long axis direction, but for example correct mould or roller and be made into device for every pair, when the deadweight of device is influential to workpiece, can adopt spring balancing at workpiece long axis direction free floating; Correct the device that mould or roller also can be made into fixing automatic centering for every pair.
The normal direction that the every pair of axis of rotation of correcting mould or roller itself should be placed on the bend pipe elastic line is the radius R direction of bend pipe, reduce to correct the relative slip between mould or roller and the workpiece, correcting mould or roller for every pair can make and wholely do gyration along two line of mid point of correcting the axis of rotation of mould or roller itself, manually or automatically adjust every pair of radius R direction of correcting the axis of rotation aligning bend pipe of mould or roller, for adapting to different tubing radiuses and bending pipes radius R, correct mould or roller can move along elbow radius R direction for every pair.
When bend pipe during as primary structure member such as curved beam, make the major axis of elliptic cross-section become minor axis by above-mentioned antidote, minor axis becomes major axis, makes to be subjected to the long axis direction of force direction along curved beam cross sectional shape (ellipse), can increase the strength and stiffness of curved beam.
The present invention corrects mould or roller can use simultaneously with original rectification mould.
Description of drawings
Fig. 1 has the plane bend pipe external view of circular initial cross-section for workpiece.
Fig. 2 is the cutaway view of Fig. 1 along the A-A line, has cross sectional shape after the plane bend pipe bending of circular initial cross-section for oval.
Fig. 3 is the position and the direction of motion figure of existing rectification mould.
Fig. 4 corrects the position and the direction of motion figure (embodiment 1) of mould for the present invention.
Fig. 5 corrects the position and the direction of motion figure (embodiment 2) of mould for the present invention.
Among the figure: 1-workpiece, 2-rectification mould (existing), 3-correct mould (of the present invention), 4-corrects roller.
The specific embodiment
Embodiment 1: as shown in Figure 4, the antidote of bending machine workpiece cross sectional shape adopts 1 pair of rectification mould that workpiece is corrected, after the rectification mould is located at the bending of bending machine workpiece; Correct the major axis both sides after mould 3 is positioned at the workpiece section deformation, the long axis direction of the direction of motion of correcting mould behind the workpiece section deformation, the bus of correcting mould is a curve, its circular arc degree is less than 180 degree when curve is circular arc;
The corrective force of correcting mould is the rectification internal force of a pair of opposite sign but equal magnitude, and the symmetrical centre of correcting mould keeps symmetrical centre constant in correcting process in the plane of minor axis;
The normal direction that the artificial or automatic adjustment of the axis of rotation of rectification mould itself is placed on the bend pipe elastic line is the radius R direction of bend pipe, corrects mould and moves along elbow radius R direction, adapts to different tubing radiuses and bending pipes radius R.
Embodiment 2: as shown in Figure 5, the antidote of bending machine workpiece cross sectional shape adopts 4 pairs of workpiece of 1 pair of rectification roller to correct, after the rectification roller is located at the bending of bending machine workpiece; Correct the major axis both sides after roller is positioned at the workpiece section deformation, the long axis direction of the direction of motion of correcting roller behind the workpiece section deformation, the bus of correcting roller is a straight line;
The corrective force of correcting roller is the rectification internal force of a pair of opposite sign but equal magnitude, and the symmetrical centre of correcting roller keeps symmetrical centre constant in correcting process in the plane of minor axis.
Embodiment 3: the workpiece initial cross-section is circular, and the antidote of bending machine workpiece cross sectional shape adopts 1 pair of rectification mould that workpiece is carried out reversible deformation, before the rectification mould is located at the bending of bending machine workpiece; Major axis both sides after correcting mould and being positioned at the workpiece cross section and will be out of shape, the long axis direction after the direction of motion of rectification mould will be out of shape along the workpiece cross section.Other is identical with embodiment 1, embodiment 2.
Claims (4)
1. the antidote of bending machine workpiece cross sectional shape adopts 1-5 to correct or reversible deformation correcting mould or pair of rollers workpiece, corrects mould or roller can be located at before or after the bending of bending machine workpiece or two places, front and back for every pair; It is characterized in that: every pair of major axis both sides of correcting after mould or roller are positioned at the workpiece section deformation, the every pair of direction of motion of correcting mould or roller long axis direction behind the workpiece section deformation.
2. the antidote of bending machine workpiece cross sectional shape according to claim 1, it is characterized in that: every pair of corrective force of correcting mould or roller is the rectification internal force of a pair of opposite sign but equal magnitude, every pair of symmetrical centre of correcting mould or roller keeps symmetrical centre constant in correcting process in the plane of minor axis.
3. the antidote of bending machine workpiece cross sectional shape according to claim 1, it is characterized in that: the normal direction that the every pair of axis of rotation of correcting mould or roller itself is placed on the bend pipe elastic line is the radius R direction of bend pipe, and the every pair of rectification mould or roller move along elbow radius R direction.
4. the antidote of bending machine workpiece cross sectional shape according to claim 1, it is characterized in that: when batch workpiece is big, correct mould and also can make a pair of roughly rectification mould of the compound bending of the certain-length of cross sectional shape and the same bending curvature of workpiece of workpiece that has, the rectification of section between workpiece carried out, promptly curved one section pipe stops and rectifys one section pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012806 CN1286589C (en) | 2004-03-04 | 2004-03-04 | Method for correcting workpiece crosssection shape of pipe bended by pipe bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012806 CN1286589C (en) | 2004-03-04 | 2004-03-04 | Method for correcting workpiece crosssection shape of pipe bended by pipe bending machine |
Publications (2)
| Publication Number | Publication Date |
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| CN1559717A true CN1559717A (en) | 2005-01-05 |
| CN1286589C CN1286589C (en) | 2006-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012806 Expired - Fee Related CN1286589C (en) | 2004-03-04 | 2004-03-04 | Method for correcting workpiece crosssection shape of pipe bended by pipe bending machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101421059B (en) * | 2006-04-14 | 2010-08-18 | 住友金属工业株式会社 | Method for correcting pipe and method for producing pipe by using that correction method |
| CN101151111B (en) * | 2005-03-31 | 2010-12-01 | 住友金属工业株式会社 | Automatic control method of roll type pipe correction machine |
| CN101296760B (en) * | 2005-10-28 | 2010-12-08 | 丰田自动车株式会社 | Method of correcting metal tube and correcting press metal die |
| CN101972914A (en) * | 2010-05-17 | 2011-02-16 | 浙江天兴管业有限公司 | Manufacture method for bending crooked pipe |
| CN102500662A (en) * | 2011-11-09 | 2012-06-20 | 燕山大学 | Whole diameter rounding method for large pipe fitting |
| CN103611769A (en) * | 2013-12-10 | 2014-03-05 | 龙口丛林中德车体***工程有限公司 | Method for machining C-shaped arm |
| CN105973185A (en) * | 2016-07-21 | 2016-09-28 | 赵艳丽 | Electric power tower steel pipe circular cross section contour detection and correction device |
| CN106493204A (en) * | 2016-11-11 | 2017-03-15 | 成都陵川特种工业有限责任公司 | A kind of bend pipe control forming method with regard to bending machine |
| CN113319150A (en) * | 2021-06-03 | 2021-08-31 | 哈尔滨工业大学 | Size correction method for elbow passing pipe fitting |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009090A (en) * | 2010-10-09 | 2011-04-13 | 江苏华阳管业股份有限公司 | Reforming mould during extrusion molding of bent pipe |
-
2004
- 2004-03-04 CN CN 200410012806 patent/CN1286589C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101151111B (en) * | 2005-03-31 | 2010-12-01 | 住友金属工业株式会社 | Automatic control method of roll type pipe correction machine |
| CN101296760B (en) * | 2005-10-28 | 2010-12-08 | 丰田自动车株式会社 | Method of correcting metal tube and correcting press metal die |
| CN101421059B (en) * | 2006-04-14 | 2010-08-18 | 住友金属工业株式会社 | Method for correcting pipe and method for producing pipe by using that correction method |
| CN101972914A (en) * | 2010-05-17 | 2011-02-16 | 浙江天兴管业有限公司 | Manufacture method for bending crooked pipe |
| CN101972914B (en) * | 2010-05-17 | 2012-07-04 | 浙江天兴管业有限公司 | Manufacture method for bending crooked pipe |
| CN102500662A (en) * | 2011-11-09 | 2012-06-20 | 燕山大学 | Whole diameter rounding method for large pipe fitting |
| CN103611769A (en) * | 2013-12-10 | 2014-03-05 | 龙口丛林中德车体***工程有限公司 | Method for machining C-shaped arm |
| CN105973185A (en) * | 2016-07-21 | 2016-09-28 | 赵艳丽 | Electric power tower steel pipe circular cross section contour detection and correction device |
| CN105973185B (en) * | 2016-07-21 | 2018-09-11 | 浙江嘉昱达机械有限公司 | Electric power tower steel pipe circular section contour detecting and apparatus for correcting |
| CN106493204A (en) * | 2016-11-11 | 2017-03-15 | 成都陵川特种工业有限责任公司 | A kind of bend pipe control forming method with regard to bending machine |
| CN113319150A (en) * | 2021-06-03 | 2021-08-31 | 哈尔滨工业大学 | Size correction method for elbow passing pipe fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1286589C (en) | 2006-11-29 |
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Assignee: EZHOU SHUNHE HEAVY MACHINERY CO., LTD. Assignor: Zhang Xianrong Contract record no.: 2012420000062 Denomination of invention: Method for correcting workpiece crosssection shape of pipe bended by pipe bending machine Granted publication date: 20061129 License type: Exclusive License Open date: 20050105 Record date: 20120514 |
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Application publication date: 20050105 Assignee: EZHOU SHUNHE HEAVY MACHINERY CO., LTD. Assignor: Zhang Xianrong Contract record no.: 2012420000062 Denomination of invention: Method for correcting workpiece crosssection shape of pipe bended by pipe bending machine Granted publication date: 20061129 License type: Exclusive License Record date: 20120514 |
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