CN100577347C - Method for molding double hyperbolic streamlined bridge pier coping circular arc section space surface - Google Patents
Method for molding double hyperbolic streamlined bridge pier coping circular arc section space surface Download PDFInfo
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- CN100577347C CN100577347C CN200810079284A CN200810079284A CN100577347C CN 100577347 C CN100577347 C CN 100577347C CN 200810079284 A CN200810079284 A CN 200810079284A CN 200810079284 A CN200810079284 A CN 200810079284A CN 100577347 C CN100577347 C CN 100577347C
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Abstract
The invention relates to a shaping method of a space curved surface of a hyperbolic streamline shape bridge pier template; the shaping method includes the following steps: in AutoCAD, the radian of the space curved surface along the height direction is replaced by a segmented chord, and the maximum gap between a segmented arc and a corresponding chord is not larger than 1.5mm; a three-dimensional space model is established in Pro/E, and refining and flattening are carried out to obtain a precise expanded view of the space curved surface; the expanded view in Pro/E is transformed into a CAXA formatted file, proper kneading is carried out on the border splines of the expanded view to obtain an optimized expanded view of the curved surface, the optimized expanded view of the curved surface is transformed into program codes which are sent to a numerical control under water plasma cutting machine to finish cutting; a three-axis roller is adopted for arc rolling according to the radius of the arc corresponding to each segmented curved surface to shape the space curved surface; each shaped segmented space curved surface is treated with welding shaping on a clamping fixture from two sides to the middle to finish the manufacturing of the space curved surface. The shaping method of the invention can improve the shaping quality of the space curved surface, enhance work efficiency and reduce material waste in cutting.
Description
Technical field:
The present invention relates to the processing method of the streamlined template of hyperbolic, especially a kind of forming method of hyperbolic streamlined bridge abutment pier cap arc section space curved surface.
Background technology:
The hyperbolic streamlined bridge abutment moulding plate is a most complicated present bridge abutment moulding plate, and it makes the shaping work that maximum difficulty is the arc section space curved surface.The baiting method of traditional imitative type gas welding cutting, error is very big, makes the poor quality of whole curved surface forming.Mould once press-fits the method for moulding, only is applicable to the space curved surface that size is less.Therefore, can't adopt traditional imitative type method and modern die methods.
Summary of the invention:
The present invention is intended to address the above problem, and provide a kind of according to mathematical principle, whole space curved surface is rationally divided, the segmentation that utilizes Pro/E to carry out space curved surface then flattens, utilize the seamless link between Pro/E and the CAXA, realize the kneading of line transect, utilize numerical control underwater plasma cutting machine to finish the forming method of the hyperbolic streamlined bridge abutment pier cap arc section space curved surface that flattens the curved surface blanking.
Realize that the technical scheme that foregoing invention adopts is: a kind of forming method of hyperbolic streamlined bridge abutment pier cap arc section space curved surface, carry out as follows:
A, in AutoCAD, utilize with directly for Qu Yuanli, the string of the radian on the space curved surface short transverse being used instead segmentation replaces, height of lift is consistent as far as possible, and the maximal clearance between the arc of the segmentation string corresponding with it is no more than 1.5mm;
The space basic size of each segmentation curved surface that b, utilization obtain in AutoCAD is set up the space three-dimensional model in Pro/E, and carries out the refinement flattening, obtains accurate space curved surface expanded view;
C, the expanded view among the Pro/E is changed into the formatted file of CAXA, the border line transect of expanded view is reasonably mediated the curved surface expanded view that is optimized;
D, the curved surface expanded view of optimizing is changed into program code, pass to numerical control underwater plasma cutting machine and finish blanking;
E, three stone rollers of use are pressed the radius of the circular arc of each segmentation curved surface correspondence, roll arc, finish the moulding of space curved surface;
F, according to from both sides to the order of centre, with each segment space curved surface welding fabrication on mold of forming, finish the making of space curved surface.
Each section panel by said method moulding of the present invention need not manual correction, its segmentation rationally and launch accurately, guaranteed the accurate position of space die sinking line, guaranteed the rounding off of entity pier cap arc section space curved surface.Compared with prior art, can improve the Forming Quality of space curved surface greatly, improve the make efficiency of product and the material of minimizing blanking and decrease, be specially adapted to the processing of the streamlined template of hyperbolic.
The specific embodiment:
Below in conjunction with embodiment in detail the present invention is described in detail.
The forming method of the described hyperbolic streamlined bridge abutment of present embodiment pier cap arc section space curved surface, carry out as follows:
1. reasonably segmentation: in AutoCAD, utilize the principle of " with straight Dai Qu ", the whole 2750mm short transverse of pier cap arc section is divided into 14 parts, preceding from top to bottom 13 sections high 200mm, topmost high 150mm.
Contour point-score helps the simple and easy of the making of frock and calculation on Construction.Be up to 200mm and make that the maximum spacing between the arc string corresponding with it is 1.5mm, it has satisfied entity in complete approximation, helps the rounding off of entity space curved surface.
2. the segmentation of space curved surface flattens: the space basic size of utilizing each the segmentation curved surface that obtains in AutoCAD, in Pro/E, set up the space three-dimensional model, and each section curved surface that will set up is divided into 10000 parts, carries out refinement and flattens, and obtains accurate space curved surface expanded view.
3. the kneading of line transect: the formatted file that the expanded view among the Pro/E is changed into CAXA.According to the highest processing request, the border line transect of expanded view is reasonably mediated the curved surface expanded view that is optimized.
4. blanking: the surface chart that launches is input among the CAXA, the arc line transect of curved surface is mediated, and with curved surface in two, passed to the blanking of underwater plasma cutting machine.With the curved surface of each section in two, help guaranteeing the position of die sinking line, guarantee that arc section contacts with straight section to be no more than 2mm.
5. moulding: each section material that will descend is opened cut, and numbering is used the radius of three stone rollers by the circular arc of each segmentation curved surface correspondence, rolls arc, finishes the moulding of space curved surface.
6. the welding: according to from both sides to the order of centre, with each segment space curved surface welding fabrication on mold of forming, finish the making of space curved surface.
Claims (1)
1, a kind of forming method of hyperbolic streamlined bridge abutment pier cap arc section space curved surface, carry out as follows:
A, in AutoCAD, utilize with directly for Qu Yuanli, the string of the radian on the pier cap arc section space curved surface short transverse being used instead segmentation replaces, height of lift is consistent as far as possible, and the maximal clearance between the arc of the segmentation string corresponding with it is no more than 1.5mm;
The space basic size of each segmentation curved surface that b, utilization obtain in AutoCAD is set up the space three-dimensional model in Pro/E, and carries out the refinement flattening, obtains accurate space curved surface expanded view;
C, the expanded view among the Pro/E is changed into the formatted file of CAXA, the border line transect of expanded view is reasonably mediated the curved surface expanded view that is optimized;
D, the curved surface expanded view of optimizing is changed into program code, pass to numerical control underwater plasma cutting machine and finish blanking;
E, three stone rollers of use are pressed the radius of the circular arc of each segmentation curved surface correspondence, roll arc, finish the moulding of space curved surface;
F, according to from both sides to the order of centre, with each segment space curved surface welding fabrication on mold of forming, finish the making of space curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810079284A CN100577347C (en) | 2008-08-23 | 2008-08-23 | Method for molding double hyperbolic streamlined bridge pier coping circular arc section space surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810079284A CN100577347C (en) | 2008-08-23 | 2008-08-23 | Method for molding double hyperbolic streamlined bridge pier coping circular arc section space surface |
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| Publication Number | Publication Date |
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| CN101347897A CN101347897A (en) | 2009-01-21 |
| CN100577347C true CN100577347C (en) | 2010-01-06 |
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| CN200810079284A Active CN100577347C (en) | 2008-08-23 | 2008-08-23 | Method for molding double hyperbolic streamlined bridge pier coping circular arc section space surface |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476395B (en) * | 2009-02-06 | 2010-12-01 | 北京首钢建设集团有限公司 | Bending assembly construction method for space curved surface special-shaped spiral steel pipe casing structure |
| CN102161147B (en) * | 2010-12-30 | 2013-03-06 | 宁夏共享集团有限责任公司 | Method for manufacturing blade mould of wind power product and hydraulic turbine |
| CN102642118B (en) * | 2012-04-25 | 2015-03-18 | 中铁宝桥（扬州）有限公司 | Production method of non-developable surface structure of large bridge steel tower |
| CN102744578B (en) * | 2012-07-23 | 2014-08-13 | 益阳橡胶塑料机械集团有限公司 | Manufacturing method of rotor body of internal mixer |
| CN103170660A (en) * | 2013-03-22 | 2013-06-26 | 沈阳飞机工业（集团）有限公司 | Method for part curve surface hole site drilling line drawing with three-dimensional model |
| CN103365251A (en) * | 2013-07-08 | 2013-10-23 | 中国北车集团大同电力机车有限责任公司 | Steel structure implementation method for streamline-shaped contour of locomotive |
| CN105397423B (en) * | 2015-12-09 | 2017-06-20 | 北京航星机器制造有限公司 | The manufacture method of the large thin-wall covering with interior muscle and complex-shaped surface mould |
| CN105880943B (en) * | 2016-05-06 | 2018-11-16 | 西安煤矿机械有限公司 | A kind of forming method of large space curved slab |
| CN107169242B (en) * | 2017-06-20 | 2019-10-01 | 陕西理工大学 | A kind of curved section type variable telescoping steel form vault template specification and parameter division methods |
| CN111877742A (en) * | 2020-08-11 | 2020-11-03 | 中建八局第二建设有限公司 | Numerical control machining construction method for special-shaped curved surface fair-faced concrete formwork system |
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| CN101347897A (en) | 2009-01-21 |
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Owner name: TANGSHAN RAILWAY CARRIAGE CO., LTD. Free format text: FORMER OWNER: TANGSHAN RAILWAY TRANSPORTATION EQUIPMENT CO., LTD. Effective date: 20110616 |
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Free format text: CORRECT: ADDRESS; FROM: 063035 NO. 3, CHANGQIAN ROAD, FENGRUN DISTRICT, TANGSHAN CITY, HEBEI PROVINCE TO: 064000 NO. 3, CHANGQIAN ROAD, FENGRUN DISTRICT, TANGSHAN CITY, HEBEI PROVINCE |
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Effective date of registration: 20110616 Address after: 064000 No. three, front road, Fengrun District, Hebei, Tangshan City Patentee after: Tangshan Railway Carriage Co., Ltd. Address before: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee before: Tangshan Railway Transportation Equipment Co., Ltd. |