CN108838618B - Method for processing and manufacturing spatial multi-curve intersecting circular tube - Google Patents
Method for processing and manufacturing spatial multi-curve intersecting circular tube Download PDFInfo
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- CN108838618B CN108838618B CN201810651222.8A CN201810651222A CN108838618B CN 108838618 B CN108838618 B CN 108838618B CN 201810651222 A CN201810651222 A CN 201810651222A CN 108838618 B CN108838618 B CN 108838618B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
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Abstract
The invention discloses a processing and manufacturing method of a spatial multi-curve intersecting circular tube, which comprises the following steps of firstly, renovating a deepening drawing, reflecting a circular tube butt joint datum point by an assembly drawing, and correspondingly marking a curved circular inner arc point and a field installation datum point (the highest point of a field installation connecting position), wherein a middle circular tube is horizontally and symmetrically arranged; secondly, designating a starting position programmed by a circular pipe intersecting line as a circular pipe butt joint datum point I; thirdly, procedures of marking an inner arc point on the outer side of the circular tube and installing a datum point on site are added, and a site positioning and hoisting lug plate is added; fourthly, the assembling process is adjusted, and the efficiency and the precision are greatly improved. The invention solves the problems of large processing and manufacturing difficulty, low precision, large field installation difficulty and the like of the multi-curved intersecting circular tube.
Description
Technical Field
The invention belongs to the field of steel structure buildings, relates to a steel structure member, and particularly relates to a method for processing and manufacturing a spatial multi-curve intersecting circular tube.
Background
In recent years, with the flying of domestic economy and the development of steel structure technology, the structure of related steel structure buildings such as domestic large airports, railway stations, Olympic venues and the like is more variable and more beautiful, and great challenges are brought to the manufacturing process of steel structure factories. This includes the fabrication of structural members of spatially curved intersecting tubular structures.
The structure has three manufacturing difficulties: firstly, the intersecting opening is a special-shaped curved surface, and the difficulty is to find an accurate base point to bend the pipe; secondly, the bending surfaces of the spatial multi-curved circular tubes are in different planes and are in a spatial multi-dimensional structure, and the spatial positions of the circular tubes are accurately adjusted to be difficult to assemble; and thirdly, the structure is a multi-dimensional space structure, and no reference exists during hoisting on site, so that accurate positioning is difficult. By integrating the difficulties, the current steel structure enterprises have low processing precision, great difficulty and potential safety hazard in field installation, low efficiency and high cost on the one hand in the manufacture of the spatial multi-curve intersecting circular tubes.
Disclosure of Invention
The invention aims to provide a method for processing and manufacturing a spatial multi-curved tubular pipe, which aims to solve the problems of high processing and manufacturing difficulty, low precision, high field installation difficulty and the like of the multi-curved tubular pipe.
In order to achieve the purpose, the invention specifically provides the following technical scheme: the method comprises the steps of innovating a deepening drawing, wherein an assembly drawing shows a round pipe butt joint reference point, and correspondingly marks a curved round inner arc point and a field installation reference point (the highest point of a field installation connecting position), wherein a middle round pipe is horizontally and symmetrically arranged; appointing a starting position programmed by a circular tube intersecting line as a circular tube butt joint datum point I; the procedures of marking the inner arc point on the outer side of the circular tube and installing a datum point on site are increased, and the site positioning and hoisting ear plate is increased; and fourthly, the assembly process is adjusted, and the efficiency and the precision are greatly improved.
The deepened drawing is renovated, so that a butt joint reference point is added, and the relative position relation among a curved-circle inner arc point, a field installation reference point and the butt joint reference point is correspondingly reflected;
the butt joint datum points are left and right quadrant points of the intersecting end head of the circular pipe in the main view in the assembly drawing and the section of the butt joint;
the inner arc point is the intersection point of the central line of the inner arc and the circular pipe after the circular pipe is bent; the central line of the inner arc is the datum line of the bending arc of the circular tube.
The field installation datum point is the highest point of the field butt joint interface position in a field hoisting state;
the positioning installation lug plate is used for installing and welding the lug plate which is hoisted and positioned on site according to the installation datum point;
the cutting starting position is the initial cutting position when the circular tube is cut by the intersecting line;
the intersecting line programming is an input program which is written in advance and is used for cutting by adopting an intersecting line cutting machine;
the starting position is designated as a circular tube butt joint datum point, and the starting position is selected as a starting cutting point during programming to cut the special-shaped intersection. (before program upgrading, starting point is in random state);
marking an inner arc point and a field installation datum point on the outer side of the circular tube, wherein the inner arc point and the field installation datum point are marked on the basis of the highest point (starting point) and the drawing size;
the assembly process is adjusted and lifted, and mainly comprises the integrated processes of bending a round pipe, placing a ground sample, building a jig frame around a butt joint datum point, an inner arc point and an installation datum point, then gradually assembling and checking a series of procedures, and adjusting and lifting.
The round pipe is bent according to a round pipe part drawing by taking an inner arc point as a reference;
the floor sample is a projection on the ground when the circular tube is assembled, and comprises a sample placing line and a sample placing point;
the jig frame is used for erecting the round pipe;
in the assembling process, a circular tube is assembled on a jig frame by taking the butt joint reference point and the ground sample as references, the butt joint reference point is coincided with a lofting point, the projection is coincided with a ground sample line, the butt joint reference point between the circular tube and the circular tube is coincided, and the positioning organizing process is carried out when the height dimension of each control point is qualified;
the inspection is a process of performing size retest by taking the butt joint datum point as a reference after the bent circular tubes are assembled and welded into the spatial multi-bent circular tubes, after the inspection is qualified, the marked field installation datum point is the position for installing the field positioning hoisting lug plate, and the hoisting and installation are performed on the field by taking the hoisting lug plate as the reference.
The invention has the following characteristics and positive effects:
firstly, the problem that a manufacturing reference is difficult to accurately find at a special-shaped pipe orifice by using a spatial multi-curve intersecting circular pipe is solved for the first time, the processing precision of a product is greatly improved by using a new process, and the production efficiency and the manufacturing cost are effectively improved;
and secondly, visual installation reference points are arranged on the site, and the lifting lug plates are installed and positioned, so that the process of fitting the intersecting openings at the hoisting edges on the site is avoided, the installation efficiency is greatly improved, and the safety risk and the cost are reduced.
Drawings
FIG. 1 is a sample diagram of a spatial multi-curved intersecting circular tube of the new version of the present invention; FIG. 2 is a schematic diagram of the present invention showing the starting point (highest point), cross line, inner arc point and field installation reference point; FIG. 3 is a schematic diagram of the present invention according to an inner arc point rounding; FIG. 4 is a schematic view of a sample placement of the present invention; FIG. 5 is a schematic view of a tire building frame of the present invention; FIG. 6 is a schematic view of a circular tube assembly of the present invention; FIG. 7 is a schematic view of the present invention assembled with two side tubes; figure 8 is a schematic view of the positioning and hoisting ear plate of the assembly site of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, compared with the conventional drawing, a new version of a spatial multi-curved intersecting circular pipe sample drawing is provided with docking reference points and correspondingly embodies the relative position relationship between a curved circular inner arc point, a field installation reference point and the docking reference points, wherein the middle circular pipe is horizontally and symmetrically arranged, and the inner arc point is coincided with the docking reference points of the circular pipes on the two sides;
performing intersecting line programming according to a drawing, and designating a butt joint datum point as a starting point position;
after the intersecting line of the circular tube is cut, marking the position of a cutting point, marking a cross center line, and marking the positions of an inner arc point and a field installation reference point according to a drawing, as shown in figure 2;
referring to fig. 3, the bending and dimension inspection is performed according to the inner arc point and the bending part diagram;
referring to fig. 4, a ground sample is placed according to a drawing, and a docking reference point, a field installation reference point and an inner arc point projection point are marked emphatically;
as shown in fig. 5, a jig frame is set up, and the dimension of the jig frame is checked and accepted;
and (6) assembling the middle A-2 bent circular tube, assembling according to the datum point of the butt joint datum point, overlapping the pipe orifice butt joint datum point, the field installation datum point and the ground sample lofting point, enabling the edge contour line to be matched with the ground sample, and performing spot welding and fixing after the height dimension is detected to be qualified.
Referring to fig. 7, the two side circular tubes are assembled one by one; a-3 staff are used for aligning the butt joint reference point 1 and the butt joint reference point 2 with the middle circular tube butt joint reference points 1 and 2 on the jig, then the circular tube is finely adjusted, the circular tube contour is matched with a ground lofting line, the end butt joint reference point, the field installation reference point and the ground sample point are matched after the end butt joint reference point and the field installation reference point are determined, and the tack welding is carried out after the height and the size are detected to be correct. The a-1 round tube was then assembled in the same manner.
And (4) integral welding, performing flame correction after welding, checking whether the butt reference point, the field installation reference point and the ground sample lofting point are coincided or not on the jig, whether the edge contour line is coincided with the ground sample or not, and whether the height dimension detection dimension is in a deviation range or not, and determining that the qualified side can be used for positioning and hoisting the lug plate.
Referring to fig. 8, the lifting lug plates and the column positioning lug plates connected with the lifting lug plates are assembled and positioned according to site installation datum points (lines), are already arranged on the relevant drawings and are arranged by a factory at a previous stage.
The above-mentioned embodiments are only used for explaining the inventive concept of the present invention, and do not limit the protection of the claims of the present invention, and any insubstantial modifications of the present invention using this concept shall fall within the protection scope of the present invention.
Claims (3)
1. A method for processing and manufacturing a spatial multi-curve intersecting circular tube is characterized by comprising the following steps: determining the position of the butt joint reference point, and correspondingly reflecting the relative position relation among an inner arc point of a bent circle, a field installation reference point and the butt joint reference point, wherein the middle circular pipe is horizontally and symmetrically arranged, and the inner arc point is superposed with the butt joint reference points of the circular pipes on the two sides;
performing intersecting line programming according to a drawing, and designating a butt joint datum point as a starting point position;
after the intersecting line of the circular tube is cut, marking the position of a cutting point, marking a cross center line, and marking the positions of an inner arc point and a field installation reference point according to a drawing;
performing circle bending and size inspection according to the inner arc point and the circle bending part drawing; placing a ground sample according to a drawing, and emphasizing identification of a docking reference point, a field installation reference point and an inner arc point projection point;
setting up a jig frame, checking and accepting the size of the jig frame, and assembling and welding the multi-curve intersecting circular tubes on the jig frame;
assembling a multi-curve intersecting circular pipe: assembling the middle bent circular tube, assembling by taking the butt joint reference point as a reference, and performing spot welding and fixing after the pipe orifice butt joint reference point, the field installation reference point and the ground sample lofting point are overlapped, the edge contour line is matched with the ground sample, and the height dimension is detected to be qualified;
assembling round pipes on two sides one by one; and aligning the first butt joint reference point and the second butt joint reference point with the first butt joint reference point and the second butt joint reference point of the middle circular tube on the jig frame, finely adjusting the circular tube to enable the contour of the circular tube to be consistent with a ground lofting line, and determining the end butt joint reference point, the field installation reference point and the ground sampling point to be consistent.
2. The processing and manufacturing method of the spatial multi-curve intersecting circular tube according to claim 1, characterized in that: and integrally welding the multi-curve intersecting circular tube, performing flame correction after welding, checking whether the butt joint reference point, the field installation reference point and the ground sample lofting point are overlapped or not on the jig, whether the edge contour line is matched with the ground sample or not, and detecting whether the height dimension is within a deviation range or not.
3. The processing and manufacturing method of the spatial multi-curve intersecting circular tube according to claim 2, characterized in that: and assembling and positioning the hoisting lug plate and the column positioning lug plate connected with the hoisting lug plate according to the field installation datum point.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651222.8A CN108838618B (en) | 2018-06-22 | 2018-06-22 | Method for processing and manufacturing spatial multi-curve intersecting circular tube |
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| CN201810651222.8A CN108838618B (en) | 2018-06-22 | 2018-06-22 | Method for processing and manufacturing spatial multi-curve intersecting circular tube |
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| CN108838618A CN108838618A (en) | 2018-11-20 |
| CN108838618B true CN108838618B (en) | 2020-08-25 |
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| CN112846559A (en) * | 2020-12-31 | 2021-05-28 | 深圳金鑫绿建股份有限公司 | Universal construction method for intersecting line vertical rod assembling connecting plate |
| CN113523660A (en) * | 2021-07-15 | 2021-10-22 | 海洋石油工程股份有限公司 | Auxiliary butt welding method for submarine pipe |
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| DE2316159A1 (en) * | 1973-03-31 | 1974-10-03 | Babcock & Wilcox Ag | ELBOW OF MULTIPLE LAYERS |
| US4450613A (en) * | 1982-01-21 | 1984-05-29 | Wfi International, Inc. | Method of manufacturing acute angled vessel connector |
| CN102689142B (en) * | 2012-05-30 | 2014-05-07 | 河北二十冶工程技术有限公司 | Tube truss manufacture process |
| CN104190956A (en) * | 2014-08-27 | 2014-12-10 | 浙江精工钢结构集团有限公司 | Method for assembling and locating intersecting round pipe |
| CN107745227A (en) * | 2017-09-26 | 2018-03-02 | 中亿丰建设集团股份有限公司 | The more curve special steel bridge arch processing methods in space |
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