CN102974988A - Drum coiling and forming method based on spin forming blank manufacture - Google Patents
Drum coiling and forming method based on spin forming blank manufacture Download PDFInfo
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- CN102974988A CN102974988A CN2012105204612A CN201210520461A CN102974988A CN 102974988 A CN102974988 A CN 102974988A CN 2012105204612 A CN2012105204612 A CN 2012105204612A CN 201210520461 A CN201210520461 A CN 201210520461A CN 102974988 A CN102974988 A CN 102974988A
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Abstract
The invention discloses a drum coiling and forming method based on spin forming blank manufacture. The outer molded surface arc length size of a spinning drum blank with the external diameter D, which is required for forming a drum with the external diameter d, is calculated with an ''equal intermediate diameter'' method; according to the obtained arc length size, an arc line is made on the outer circumferential surface of the spinning drum blank; two straight lines parallel with the center line of the spinning drum blank are made on the surface of the spinning drum blank; the two straight lines respectively pass through one end of the arc line; an arc-shaped area is formed on the circumferential surface of the spinning drum blank by the arc line and the two straight lines; an arc-shaped plate material required for coiling the drum is formed by baiting in a machining mode; and the arc-shaped plate material is coiled into the drum by a plate coiling machine. Compared with the traditional drum forming method, the drum coiling and forming method disclosed by the invention is characterized in that waste brought by purchasing the whole piece of plate material is avoided on the aspect of material use, working procedures of flattening, baiting and edge shaving are omitted on the processing aspect, a processing process is simplified, and the cost is saved.
Description
Technical field
The present invention relates to the metallic cylinder metal plate and be welded into the shape technical field, in a kind of situation adopting for the city without suitable dimension specification plate, use existing spinning mandrel forging is spun into the spinning cylinder blank, be welded into afterwards the process of shape processing cylinder by Milling Process, volume.
Background technology
In metallic cylinder figuration manufacture process, cylinder generally adopts rotary press modelling or volume to be welded into shape.The cylinder rotary press modelling need adopt forge piece blank reheating, utilize the spinning tool spinning such as spinning mandrel to form; It is to be welded after adopting plate to roll that the cylinder volume is welded into shape.Because the disposable input funds of spinning tool such as spinning mandrel are higher, at state of the art still in the production of immature, development negligible amounts, the cylinder plates that adopt that are shaped are welded into shape through volume more.And owing to reasons such as little, the required cylinder plate of amount of product throughput are few, the required plate customization of cylinder volume weldering, buying difficulty can't satisfy product development progress demand.
Given this, adopted spinning to weld the manufacturing process that cooperates with volume for little in batches product cylinder shaping, namely adopt forging blank, utilize existing spinning block tire to be spun to spinning cylinder blank with the wall thickness such as required cylinder, again the spinning cylinder blank is processed required cylinder by milling, volume Welding.
Following scheme is adopted in the shaping of conventional roll weldering cylinder: rule at horizontal plate by exhibition material size, after cutting the limit or digging limit, plane groove, adopt veneer reeling machine to roll up curved, then adopt the welding means that cylinder is healed up, finish cylinder after correcting shape and be shaped, its operation is: line → blanking → plane limit → volume weldering → school circle.
Therefore, utilizing the spinning cylinder blank to carry out cylinder is shaped, at first must adopt Methods of OFC-A to cut the spinning cylinder blank and flatten the horizontal plate of formation, just can carry out follow-up processing, for the high product cylinder of requirement of strength, its material has adopted high-strength steel, unimach, after this product material process gas cutting operation, needs carry out annealing in process to material.
So, should be for the conventional processes of utilizing spinning cylinder blank shaping cylinder: gas cutting → (annealing →) flattening → line → blanking → plane limit → volume weldering → school circle (see figure 1), operation is loaded down with trivial details, cost is higher, has the unsafe factor of operating aspect simultaneously in unimach spinning cylinder blank flattening process.
Summary of the invention
Loaded down with trivial details for overcoming the operation that exists in the prior art, cost is higher, has the deficiency of unsafe factor in the operation, the present invention proposes a kind of cylinder rolled forming method based on the rotary press modelling base.
Concrete steps of the present invention are:
The first step, determine the arc length ⌒ L of cylinder plate outer mold surface: described arc length ⌒ L is the width of cylinder plate; Obtain the arc length ⌒ L of spinning cylinder blank outer mold surface by formula (1).
Wherein: ⌒ L is spinning cylinder blank outer mold surface arc length; D is spinning cylinder blank external diameter; T is spinning cylinder blank wall thickness; D is outside diameter of cylinder, and the barrel thickness of this cylinder is identical with the wall thickness of spinning cylinder blank.
Second step, rule at the spinning cylinder blank: described is the size of determining formed thereby cylinder plate in the line of spinning cylinder blank, and its detailed process is; Circumferentially mark camber line, the length of this camber line=⌒ L at spinning cylinder blank external peripheral surface along this spinning cylinder blank.Length direction along the spinning cylinder blank is done two straight lines parallel with the center line of this spinning cylinder blank on the surface of this spinning cylinder blank, and these two straight lines are crossed respectively an end of described camber line, and the arc area that consists of at the circumferential surface of spinning cylinder blank by described camber line and two straight lines is the size of formed thereby cylinder plate;
The 3rd step, shaping cylinder plate: along the size blanking of the cylinder plate of delimiting at spinning cylinder blank circumferential surface, obtain the plate of arc.
In the 4th step, roll cylinder: the described cylinder that rolls is to be made for cylinder with obtaining the roll bending method of arc plate by routine.Seam crossing to the cylinder that obtains carries out butt welding.
In the 5th step, cylinder is carried out the school circle: by conventional method cylinder is carried out the school circle, finish cylinder and be shaped.
Among the present invention, required external diameter was the spinning cylinder blank outer mold surface arc length size ⌒ L of D when to adopt the method such as " central diameter " to calculate the shaping external diameter be the cylinder of d, and circumferentially mark one section camber line at spinning cylinder blank external peripheral surface along this spinning cylinder blank, arc length is of a size of ⌒ L, length direction along the spinning cylinder blank is done two straight lines parallel with the center line of this spinning cylinder blank on the surface of this spinning cylinder blank L, and these two straight lines are crossed respectively an end of described camber line, consist of the arc area (see figure 3) of ⌒ L * l * t at the circumferential surface of spinning cylinder blank by described camber line and two straight lines, and by the blanking of machine add mode, formed and rolled the required arc plate of cylinder.
The barrel thickness of cylinder is identical with the wall thickness of spinning cylinder blank among the present invention, the final shaping length of cylinder is less than or equal to the length of spinning cylinder blank, the spinning length of spinning cylinder blank can require to decide according to cylinder, excessive such as the drum length requirement, can take many cylinder circular seam welding to connect the method for lengthening.
The present invention is shaped with conventional cylinder and compares, and has avoided purchasing the waste that whole plate brings aspect materials; Aspect processing, save the operations such as flattening, blanking, plane limit, optimized greatly process, saved cost.
Description of drawings
Fig. 1 is flow chart of the present invention;
Fig. 2 is for to be divided into the required arc length size of type cylinder milling line schematic diagram at the spinning cylinder blank.
Fig. 3 is by the required arc length size of shaping cylinder milling backarc plate schematic diagram on the spinning cylinder blank.
Fig. 4 is cylinder shaping schematic diagram after the milling arc soil weld.
The specific embodiment
Embodiment one
Present embodiment is a kind of cylinder rolled forming method based on the mould pressing base.
Outside diameter d=the 1200mm of the cylinder of formed thereby, thickness t=5.4mm, length l=1950mm is to adopt outer diameter D=2000mm, thickness t=5.4mm, the spinning cylinder blank of length l=1950mm is shaped, and the cylinder material is 30Cr3SiNiMoVA.Its specific implementation process is as follows:
The first step is determined the arc length of cylinder plate outer mold surface.Described arc length ⌒ L is the width of cylinder plate.
Obtain the arc length ⌒ L of spinning cylinder blank outer mold surface by formula (1).
Wherein: ⌒ L is spinning cylinder blank outer mold surface arc length; D is spinning cylinder blank external diameter; T is spinning cylinder blank wall thickness; D is outside diameter of cylinder, and the barrel thickness of this cylinder is identical with the wall thickness of spinning cylinder blank.In the present embodiment, outside diameter of cylinder d=1200mm, spinning cylinder blank outer diameter D=2000mm, spinning cylinder blank wall thickness t=5.4mm, spinning cylinder charge length l=1950mm.
Second step, rule at the spinning cylinder blank: described is the size of determining formed thereby cylinder plate in the line of spinning cylinder blank, and its detailed process is; According to the ⌒ L that obtains, circumferentially mark camber line, the length of this camber line=⌒ L at spinning cylinder blank external peripheral surface along this spinning cylinder blank.Length direction along the spinning cylinder blank is done two straight lines parallel with the center line of this spinning cylinder blank on the surface of this spinning cylinder blank, and these two straight lines are crossed respectively an end of described camber line, and the arc area that consists of at the circumferential surface of spinning cylinder blank by described camber line and two straight lines is the size of formed thereby cylinder plate
In the present embodiment, at the length ⌒ L=3763mm of spinning cylinder blank external peripheral surface camber line.Consist of the arc area of ⌒ 3763mm * 1950mm * 5.4mm at the circumferential surface of spinning cylinder blank by described camber line and two straight lines.
The 3rd step was clamped in the spinning cylinder blank on the vertical knee-type milling machine, made milling cutter be positioned at arc area one lateral edges place with spinning cylinder blank circumferential surface.Described milling cutter carries out milling along two straight lines of spinning cylinder blank circumferential surface, and the plate beyond the described spinning cylinder blank circumferential surface arc area is removed, and obtains the plate of arc.In described milling, according to the side milling groove of technological requirement at the plate of described arc.In the present embodiment, the plate that obtains arc is ⌒ 3763mm * 1950mm * 5.4mm.
In the 4th step, roll cylinder.The described cylinder that rolls is that the plate that will obtain arc rolls and becomes cylinder.The plate of described arc is placed on the veneer reeling machine, adopts conventional roll bending method, the plate of described arc is rolled becomes cylinder.In the present embodiment, the outside diameter of cylinder d=1200mm that rolls.Seam crossing to the cylinder that obtains carries out butt welding.
The 5th step, cylinder is carried out the school circle, by conventional method cylinder is carried out the school circle, make it reach specification requirement, finish cylinder and be shaped.
Embodiment two
Present embodiment is a kind of cylinder rolled forming method based on the mould pressing base.
Outside diameter d=the 1200mm of the cylinder of formed thereby, thickness t=4.25mm, length l=1350mm is to adopt outer diameter D=1400mm, thickness t=4.25mm, the spinning cylinder blank of length l=1350mm is shaped, and the cylinder material is D406A.Its specific implementation process is as follows:
The first step is determined the arc length of cylinder plate outer mold surface.Described arc length ⌒ L is the width of cylinder plate.
Obtain the arc length ⌒ L of spinning cylinder blank outer mold surface by formula (1).
Wherein: ⌒ L is spinning cylinder blank outer mold surface arc length; D is spinning cylinder blank external diameter; T is spinning cylinder blank wall thickness; D is outside diameter of cylinder, and the barrel thickness of this cylinder is identical with the wall thickness of spinning cylinder blank.In the present embodiment, outside diameter of cylinder d=1200mm, spinning cylinder blank outer diameter D=1400mm, spinning cylinder blank wall thickness t=4.25mm, spinning cylinder charge length l=1350mm.
Second step, rule at the spinning cylinder blank: described is the size of determining formed thereby cylinder plate in the line of spinning cylinder blank, and its detailed process is; According to the ⌒ L that obtains, circumferentially mark camber line, the length of this camber line=⌒ L at spinning cylinder blank external peripheral surface along this spinning cylinder blank.Length direction along the spinning cylinder blank is done two straight lines parallel with the center line of this spinning cylinder blank on the surface of this spinning cylinder blank, and these two straight lines are crossed respectively an end of described camber line, and the arc area that consists of at the circumferential surface of spinning cylinder blank by described camber line and two straight lines is the size of formed thereby cylinder plate
In the present embodiment, at the length ⌒ L=3768mm of spinning cylinder blank external peripheral surface camber line.Consist of the arc area of ⌒ 3768 * 1350mm * 4.25mm at the circumferential surface of spinning cylinder blank by described line and two straight lines.
The 3rd step, shaping cylinder plate: the spinning cylinder blank is clamped on the vertical knee-type milling machine, makes milling cutter be positioned at arc area one lateral edges place with spinning cylinder blank circumferential surface.Described milling cutter carries out milling along two straight lines of spinning cylinder blank circumferential surface, and the plate beyond the described spinning cylinder blank circumferential surface arc area is removed, and obtains the plate of arc.In described milling, according to the side milling groove of technological requirement at the plate of described arc.In the present embodiment, the plate that obtains arc is ⌒ 3768mm * 1350mm * 4.25mm.
In the 4th step, roll cylinder: the described cylinder that rolls is that the plate that will obtain arc rolls and becomes cylinder.The plate of described arc is placed on the veneer reeling machine, adopts conventional roll bending method, the plate of described arc is rolled becomes cylinder.In the present embodiment, the outside diameter of cylinder d=1200mm that rolls.Seam crossing to the cylinder that obtains carries out butt welding.
In the 5th step, cylinder is carried out the school circle: by conventional method cylinder is carried out the school circle, make it reach specification requirement, finish cylinder and be shaped.
Claims (1)
1. cylinder rolled forming method based on the rotary press modelling base is characterized in that concrete steps are:
The first step, determine the arc length ⌒ L of cylinder plate outer mold surface: described arc length ⌒ L is the width of cylinder plate: the arc length ⌒ L that obtains spinning cylinder blank outer mold surface by formula (1);
Wherein: ⌒ L is spinning cylinder blank outer mold surface arc length; D is spinning cylinder blank external diameter; T is spinning cylinder blank wall thickness; D is outside diameter of cylinder, and the barrel thickness of this cylinder is identical with the wall thickness of spinning cylinder blank;
Second step, rule at the spinning cylinder blank: described is the size of determining formed thereby cylinder plate in the line of spinning cylinder blank, and its detailed process is; Circumferentially mark camber line, the length of this camber line=⌒ L at spinning cylinder blank external peripheral surface along this spinning cylinder blank; Length direction along the spinning cylinder blank is done two straight lines parallel with the center line of this spinning cylinder blank on the surface of this spinning cylinder blank, and these two straight lines are crossed respectively an end of described camber line, and the arc area that consists of at the circumferential surface of spinning cylinder blank by described camber line and two straight lines is the size of formed thereby cylinder plate;
The 3rd step, shaping cylinder plate: along the size blanking of the cylinder plate of delimiting at spinning cylinder blank circumferential surface, obtain the plate of arc;
In the 4th step, roll cylinder: the described cylinder that rolls is that the roll bending method that the plate that obtains arc is rolled up by routine is made for cylinder; Seam crossing to the cylinder that obtains carries out butt welding;
In the 5th step, cylinder is carried out the school circle: by conventional method cylinder is carried out the school circle, finish cylinder and be shaped.
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| CN201210520461.2A CN102974988B (en) | 2012-12-03 | 2012-12-03 | Drum coiling and forming method based on spin forming blank manufacture |
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| CN201210520461.2A CN102974988B (en) | 2012-12-03 | 2012-12-03 | Drum coiling and forming method based on spin forming blank manufacture |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139281A (en) * | 2014-06-27 | 2014-11-12 | 湖北三江航天红阳机电有限公司 | Arc-shaped titanium alloy thin-walled part forming tooling and method |
| CN105234642A (en) * | 2015-11-26 | 2016-01-13 | 甘肃中水电水工机械有限公司祥云分公司 | Processing method of oval mandoor frame |
| CN106734481A (en) * | 2016-12-02 | 2017-05-31 | 西安航天动力机械厂 | A kind of Small Taper cylindrical member composite spinning processing method |
| CN110900120A (en) * | 2019-10-30 | 2020-03-24 | 太原科技大学 | Integral forming method of wide-width high-rib thin-wall metal wall plate |
| CN111571148A (en) * | 2020-05-29 | 2020-08-25 | 重庆水轮机厂有限责任公司 | Method for molding barrel of runner chamber of water turbine |
| CN111872632A (en) * | 2020-06-12 | 2020-11-03 | 中国二冶集团有限公司 | Method for manufacturing open pipeline |
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| JPH08174249A (en) * | 1994-12-20 | 1996-07-09 | Nkk Corp | Manufacture of welded steel pipe |
| CN101269456A (en) * | 2008-04-16 | 2008-09-24 | 嘉兴市四通车轮制造有限公司 | Process for manufacturing steel spoke |
| CN101722210A (en) * | 2009-12-02 | 2010-06-09 | 河南科隆集团有限公司 | Method for forming drum skin |
| CN102078888A (en) * | 2010-12-27 | 2011-06-01 | 中国二十二冶集团有限公司 | Method for manufacturing steel pipe with long round section |
| CN102581566A (en) * | 2012-03-06 | 2012-07-18 | 无锡市金羊管道附件有限公司 | Sleeve rolling process |
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| JPH08174249A (en) * | 1994-12-20 | 1996-07-09 | Nkk Corp | Manufacture of welded steel pipe |
| CN101269456A (en) * | 2008-04-16 | 2008-09-24 | 嘉兴市四通车轮制造有限公司 | Process for manufacturing steel spoke |
| CN101722210A (en) * | 2009-12-02 | 2010-06-09 | 河南科隆集团有限公司 | Method for forming drum skin |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139281A (en) * | 2014-06-27 | 2014-11-12 | 湖北三江航天红阳机电有限公司 | Arc-shaped titanium alloy thin-walled part forming tooling and method |
| CN105234642A (en) * | 2015-11-26 | 2016-01-13 | 甘肃中水电水工机械有限公司祥云分公司 | Processing method of oval mandoor frame |
| CN105234642B (en) * | 2015-11-26 | 2017-10-13 | 中国水电四局（祥云）机械能源装备有限公司 | A kind of processing method of oval mandoor doorframe |
| CN106734481A (en) * | 2016-12-02 | 2017-05-31 | 西安航天动力机械厂 | A kind of Small Taper cylindrical member composite spinning processing method |
| CN106734481B (en) * | 2016-12-02 | 2019-04-19 | 西安航天动力机械厂 | A kind of Small Taper cylindrical member composite spinning processing method |
| CN110900120A (en) * | 2019-10-30 | 2020-03-24 | 太原科技大学 | Integral forming method of wide-width high-rib thin-wall metal wall plate |
| CN110900120B (en) * | 2019-10-30 | 2022-04-08 | 太原科技大学 | Integral forming method of wide-width high-rib thin-wall metal wall plate |
| CN111571148A (en) * | 2020-05-29 | 2020-08-25 | 重庆水轮机厂有限责任公司 | Method for molding barrel of runner chamber of water turbine |
| CN111872632A (en) * | 2020-06-12 | 2020-11-03 | 中国二冶集团有限公司 | Method for manufacturing open pipeline |
| CN111872632B (en) * | 2020-06-12 | 2023-06-20 | 中国二冶集团有限公司 | Manufacturing method of open pipeline |
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