CN111331317A - Method for manufacturing hemispherical dome-shaped and square-shaped connecting piece - Google Patents
Method for manufacturing hemispherical dome-shaped and square-shaped connecting piece Download PDFInfo
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- CN111331317A CN111331317A CN202010051763.4A CN202010051763A CN111331317A CN 111331317 A CN111331317 A CN 111331317A CN 202010051763 A CN202010051763 A CN 202010051763A CN 111331317 A CN111331317 A CN 111331317A
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a method for manufacturing a connecting piece of a dome, a round pipe is manufactured by a rectangular plate, the diameter of the round pipe is equal to the diameter of a round opening of the connecting piece of the dome, a triangular plate is blanked, the bottom edge of the triangular plate is equal to the side length of a square opening of the connecting piece of the dome, and the height of the triangular plate is equal to the height of the connecting piece of the dome; marking points of the quartering angle on the circular openings at the two ends of the circular tube respectively, wherein the marking points at the two ends of the circular tube are staggered by 45 degrees; connecting the mark point at one end with two nearest mark points at the other end on the pipe wall, and dividing the circular pipe into two equal parts along the connecting line; fixing the round opening of the equant part, stretching four sharp corners of the equant part outwards, and stretching the arc-shaped cutting edge into a straight line shape; and embedding the triangular plate between adjacent sharp corners on the equant part, and welding the adjusted rear edge part to obtain the hemispherical-rectangular connecting piece. The method reduces material loss, simplifies part lofting, improves manufacturing efficiency, and ensures concentricity of the circular opening and the square opening and precision of the connecting piece in the sky circle and the earth circle.
Description
Technical Field
The invention belongs to the field of steel structure engineering, and particularly relates to a method for manufacturing a connecting piece for a skyline and a square.
Background
In steel structure engineering, the round-top place is a connecting piece with a round upper opening and a square lower opening (or the upper opening and the lower opening can be square and round), and is used for connecting a round pipe and a square pipe.
The existing method for manufacturing the Tianyuan Fangqi comprises the following steps: the method comprises the steps of firstly dividing the hemispherical dome into 8 parts, respectively unfolding and lofting, blanking the unfolded samples integrally or in parts according to conditions, then carrying out arc pressing and bending treatment on the blanked plates by using equipment such as a hand hammer or a press machine, and finally folding, assembling and welding the bent plates.
The above method has the following problems: 1) the unfolding and lofting of the skyline and the square are complex, and a general operator needs to learn to master the lofting method; 2) after the skyline is expanded and lofted, the inner side is in a sector shape of an arc line and the outer side is in a broken line, if the whole material is discharged, the material loss is large, and if the material loss is reduced and the material is discharged in multiple sections, the splicing quantity is large, and the manufacturing efficiency is low; 3) in order to ensure the blanking precision, a numerical control cutting machine is required to be used for blanking, the equipment utilization is single, and the restriction is large; 4) in the plate pressing and bending process, an error which is difficult to avoid exists in the transition part of the circular arc and the straight section; 5) after the plates are bent, folded and assembled, the ovality of the circular opening is difficult to control; 6) after the folding and the assembling, the concentricity of the round opening and the square opening is difficult to control.
Disclosure of Invention
The invention aims to provide a method for manufacturing a connecting piece of a dome and a square, which has the advantages of simple part shape, reduced material loss, simplified part layout, various available equipment, improved manufacturing efficiency and ensured concentricity of a circular opening and a square opening and precision of the connecting piece of the dome and the square.
The technical scheme adopted by the invention is as follows:
a method of making a hemispherical-hemispherical joint, comprising the steps of:
s1, manufacturing a round pipe by using a rectangular plate, wherein the diameter of the round pipe is equal to the diameter of a round opening of the connecting piece at the upper circle and the lower circle, blanking a triangular plate, and enabling the bottom edge of the triangular plate to be equal to the side length of a square opening of the connecting piece at the upper circle and the lower circle and the height to be equal to the height of the connecting piece at the;
s2, marking points of quartering angles are marked on the circular openings at the two ends of the circular tube respectively, and the marking points at the two ends of the circular tube are staggered by 45 degrees;
s3, connecting the mark point at one end with the two nearest mark points at the other end on the pipe wall, and dividing the circular pipe into two equal parts along the connecting line;
s4, fixing the circular opening of the equant part, stretching four sharp corners of the equant part outwards, and stretching the arc-shaped cutting edge into a straight line;
and S5, embedding the triangular plate between adjacent sharp corners on the equant part, and adjusting the rear edge part for welding to obtain the hemispherical-square connecting piece.
In step S2, the round tube is placed vertically, the upper end marker is marked first, then the lower end is projected vertically, and finally the lower end marker is marked by staggering 45 ° on the basis of the projected point.
In step S3, the round tube is placed vertically without breaking the round mouth of the round tube during cutting.
In step S4, when the four sharp corners of the aliquot are stretched outwardly, the four sharp corners are simultaneously stretched outwardly symmetrically.
Further, the round tube and the triangular plate are equal in thickness.
Furthermore, the diameter of the round opening of the connecting piece at the upper circle and the side length of the square opening of the connecting piece at the lower circle are equal, and the connecting piece at the upper circle and the lower circle is an equal-diameter connecting piece at the upper circle and the lower circle.
The invention has the beneficial effects that:
in the method, the four most complicated arc transition sections are formed by equally cutting circular tubes, the manufacturing is simple and convenient, the part lofting process is simplified, common operators can complete the part lofting process, the manufacturing efficiency is improved, one circular tube can be used for manufacturing two identical equally divided parts, and then two identical hemispherical and dome-shaped connecting pieces are manufactured, so that extremely high quality control is realized.
In the method, the part is divided into a rectangle and a triangle, the shape is simple and regular, the blanking can be performed by using a semi-automatic cutting machine, a straight strip cutting machine and other equipment besides a numerical control cutting machine, the variety of available equipment is multiple, the limitation of the equipment is avoided, and meanwhile, the part is simple in shape and high in blanking size precision, and the error caused by pressing and bending is avoided.
In the method, the circular arc transition section is manufactured into a circular tube, the circular arc transition section is equally divided into equal angles and symmetrically stretched, the ovality of the circular opening of the square opening of.
In the method, the round pipe is made of rectangular plates, so that materials are saved, and material loss is greatly reduced.
Drawings
FIG. 1 is a perspective view of a circular tube in an embodiment of the present invention.
FIG. 2 is a diagram illustrating the marks of the quarter angles on the circular opening at the upper end of the circular tube in the embodiment of the present invention.
FIG. 3 is a diagram illustrating the marks of the quarter angles on the circular opening at the lower end of the circular tube in the embodiment of the present invention.
Fig. 4 is a schematic diagram of a round tube after connecting marking points at two ends of the round tube according to an embodiment of the invention.
FIG. 5 is a schematic view of a circular pipe cut along a connecting line according to an embodiment of the present invention.
FIG. 6 is a schematic illustration of an embodiment of the present invention after straightening the halves.
FIG. 7 is a schematic view of a hemispherical-square connecting piece obtained by embedding the equal-division pieces through triangular plates in the embodiment of the invention.
In the figure: 1-round tube; 2-triangular plate.
Detailed Description
The invention is further described below with reference to the figures and examples.
A method of making a hemispherical-hemispherical joint, comprising the steps of: s1, manufacturing a round pipe 1 by using a rectangular plate, wherein the diameter of the round pipe 1 is equal to that of a round opening of a connecting piece at a vertex and a vertex, blanking a triangular plate 2, and the bottom edge of the triangular plate 2 is equal to the side length of a square opening of the connecting piece at the vertex and the height is equal to that of the connecting piece at the vertex; s2, marking points of quartering angles are marked on the circular openings at the two ends of the circular tube 1 respectively, and the marking points at the two ends of the circular tube 1 are staggered by 45 degrees; s3, connecting the mark point at one end with the two mark points nearest to the other end on the pipe wall, and dividing the circular pipe 1 into two equal parts along the connecting line; s4, fixing the circular opening of the equant part, stretching four sharp corners of the equant part outwards, and stretching the arc-shaped cutting edge into a straight line; s5, embedding the triangular plates 2 between adjacent sharp corners on the equant part (one equant part needs four triangular plates 2 for embedding, one divided round tube 1 needs eight triangular plates 2 for embedding, and the specific number is determined by analogy), adjusting the rear parts and welding to obtain the connecting piece for the celestial sphere and the local place.
In the method, 1) the four most complicated arc transition sections are formed by equally cutting the circular tube 1, the manufacturing is simple and convenient, the part lofting process is simplified, the manufacturing can be completed by general operators, the manufacturing efficiency is improved, and one circular tube 1 can be used for manufacturing two identical equally divided parts so as to manufacture two identical hemispherical and hemispherical connecting pieces, thereby realizing extremely high quality control; 2) the part is divided into rectangles and triangles, the shapes are simple and regular, the blanking can be performed by using equipment such as a semi-automatic cutting machine, a straight strip cutting machine and the like besides a numerical control cutting machine, the variety of available equipment is large, the limitation of the equipment is avoided, and meanwhile, the part is simple in shape and high in blanking size precision, so that the error caused by pressing and bending is avoided; 3) the circular arc transition section is manufactured into a circular tube 1, the circular arc transition section is equally divided into equal angles and symmetrically stretched, the ovality of a circular opening of the square-shaped connector is ensured, and the concentricity of the circular opening and the square opening and the precision of the square-shaped connector are ensured by embedding and supplementing the triangular plate 2; 4) the round pipe 1 is made of rectangular plates, so that materials are saved, and material loss is greatly reduced.
In step S2, the round tube 1 is placed vertically, the marking point at the upper end is marked first, then the vertical projection point is made at the lower end, and finally the marking point at the lower end is marked by staggering 45 ° on the basis of the projection point.
In step S3, the round tube 1 is placed vertically without breaking the round mouth of the round tube 1 during cutting.
In step S4, the four sharp corners of the aliquot are simultaneously stretched symmetrically outward (by a tool such as a chain block).
In the present embodiment, the circular tube 1 and the triangular plate 2 are equal in thickness. Of course, they may not be of equal thickness.
In this embodiment, the diameter of the round opening of the hemispherical dome-shaped connector is equal to the side length of the square opening of the hemispherical dome-shaped connector, and the square opening of the hemispherical dome-shaped connector is an equal-diameter hemispherical dome-shaped connector. Of course, they may not be equal.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (6)
1. A method for manufacturing a connecting piece of a round top and a square bottom is characterized in that: comprises the steps of (a) carrying out,
s1, manufacturing a round pipe by using a rectangular plate, wherein the diameter of the round pipe is equal to the diameter of a round opening of the connecting piece at the upper circle and the lower circle, blanking a triangular plate, and enabling the bottom edge of the triangular plate to be equal to the side length of a square opening of the connecting piece at the upper circle and the lower circle and the height to be equal to the height of the connecting piece at the;
s2, marking points of quartering angles are marked on the circular openings at the two ends of the circular tube respectively, and the marking points at the two ends of the circular tube are staggered by 45 degrees;
s3, connecting the mark point at one end with the two nearest mark points at the other end on the pipe wall, and dividing the circular pipe into two equal parts along the connecting line;
s4, fixing the circular opening of the equant part, stretching four sharp corners of the equant part outwards, and stretching the arc-shaped cutting edge into a straight line;
and S5, embedding the triangular plate between adjacent sharp corners on the equant part, and adjusting the rear edge part for welding to obtain the hemispherical-square connecting piece.
2. The method of making a hemispherical-hemispherical joint as claimed in claim 1, wherein: in step S2, the round tube is placed vertically, the upper end marker is marked first, then the lower end is projected vertically, and finally the lower end marker is marked by staggering 45 ° on the basis of the projected point.
3. The method of making a hemispherical-hemispherical joint as claimed in claim 1, wherein: in step S3, the round tube is placed vertically without breaking the round mouth of the round tube during cutting.
4. The method of making a hemispherical-hemispherical joint as claimed in claim 1, wherein: in step S4, when the four sharp corners of the aliquot are stretched outwardly, the four sharp corners are simultaneously stretched outwardly symmetrically.
5. The method of making a hemispherical-hemispherical joint as claimed in claim 1, wherein: the round tube and the triangular plate are equal in thickness.
6. The method of making a hemispherical-hemispherical joint as claimed in claim 1, wherein: the diameter of the round opening of the connecting piece at the upper circle and the side length of the square opening of the connecting piece at the lower circle are equal, and the connecting piece at the upper circle and the lower circle is an equal-diameter connecting piece at the upper circle and the lower circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051763.4A CN111331317A (en) | 2020-01-17 | 2020-01-17 | Method for manufacturing hemispherical dome-shaped and square-shaped connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051763.4A CN111331317A (en) | 2020-01-17 | 2020-01-17 | Method for manufacturing hemispherical dome-shaped and square-shaped connecting piece |
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| CN111331317A true CN111331317A (en) | 2020-06-26 |
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| CN202010051763.4A Pending CN111331317A (en) | 2020-01-17 | 2020-01-17 | Method for manufacturing hemispherical dome-shaped and square-shaped connecting piece |
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| DE2513328A1 (en) * | 1975-03-26 | 1976-10-07 | Karl Burr | Adaptor for pipe section transformation - has gradual, steady change in perimeter segment size |
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| CN102172821A (en) * | 2011-03-21 | 2011-09-07 | 中国一冶集团有限公司 | Method for manufacturing adapting piece with round top and square bottom |
| WO2012002836A1 (en) * | 2010-06-28 | 2012-01-05 | Demin Boris Ivanovich | Constructor for rapidly erectable dismountable assembled shell-type structures |
| CN202812555U (en) * | 2012-08-01 | 2013-03-20 | 河南神州重型封头有限公司 | Butt joint with circular top and rectangular bottom |
| CN103100835A (en) * | 2011-11-11 | 2013-05-15 | 南通大通宝富风机有限公司 | Method of unfolding hemispherical dome sheet metal part |
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| CN106638962A (en) * | 2017-01-22 | 2017-05-10 | 浙江精工钢结构集团有限公司 | Manufacturing method of switching joint with upper end being round and lower end being square |
| CN109513830A (en) * | 2018-11-30 | 2019-03-26 | 白银有色集团股份有限公司 | The model of solid-drawn hemispherical dome and its method for drawing hemispherical dome |
| CN111365543A (en) * | 2020-03-26 | 2020-07-03 | 河北省安装工程有限公司 | Round-top square tube and processing method thereof |
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2020
- 2020-01-17 CN CN202010051763.4A patent/CN111331317A/en active Pending
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| DE2513328A1 (en) * | 1975-03-26 | 1976-10-07 | Karl Burr | Adaptor for pipe section transformation - has gradual, steady change in perimeter segment size |
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| CN103100835A (en) * | 2011-11-11 | 2013-05-15 | 南通大通宝富风机有限公司 | Method of unfolding hemispherical dome sheet metal part |
| CN202812555U (en) * | 2012-08-01 | 2013-03-20 | 河南神州重型封头有限公司 | Butt joint with circular top and rectangular bottom |
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| CN105414893A (en) * | 2015-12-04 | 2016-03-23 | 武汉钢铁(集团)公司 | Manufacturing method for round-top and square-ground transition connector |
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| CN111365543A (en) * | 2020-03-26 | 2020-07-03 | 河北省安装工程有限公司 | Round-top square tube and processing method thereof |
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Application publication date: 20200626 |