CN102974988B - 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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- CN102974988B CN102974988B CN201210520461.2A CN201210520461A CN102974988B CN 102974988 B CN102974988 B CN 102974988B CN 201210520461 A CN201210520461 A CN 201210520461A CN 102974988 B CN102974988 B CN 102974988B
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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 metallic cylinder metal plate and be welded into shape technical field, a kind of when adopting for city without suitable dimension specification plate, use existing spinning mandrel and forging is spun into spinning cylinder blank, afterwards by the process of Milling Process, volume weldering formed machining cylinder.
Background technology
In metallic cylinder figuration manufacture process, cylinder generally adopts rotary press modelling or volume to be welded into shape.Cylinder rotary press modelling need adopt forge piece blank reheating, utilize the spinning tool spinning such as spinning mandrel to form; It is be welded after adopting plate to roll that cylinder volume is welded into shape.Because the spinning tools such as spinning mandrel disposable input funds are higher, in the production of, development negligible amounts still immature at state of the art, the cylinder plate that adopts that is shaped is welded into shape through volume more.And due 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, cannot meet the Development Schedule demand of product.
Given this, spinning be have employed for the product cylinder shaping that batch is little and weld with volume the manufacturing process coordinated, namely forging blank is adopted, utilize existing spinning block tire to be spun to the spinning cylinder blank with the wall thickness such as required cylinder, then by milling, volume Welding, required cylinder is processed to spinning cylinder blank.
The shaping of conventional roll weldering cylinder adopts following scheme: rule on horizontal plate by exhibition material size, by cutting edge or after digging limit, plane groove, it is curved that employing veneer reeling machine carries out volume, then adopt welding means that cylinder is healed up, complete cylinder after correcting shape to be shaped, its operation is: line → blanking → plane limit → volume weldering → school circle.
Therefore, spinning cylinder blank is utilized to carry out cylinder shaping, first must Methods of OFC-A be adopted to cut spinning cylinder blank and flatten the horizontal plate of formation, just follow-up processing can be carried out, for the product cylinder that requirement of strength is high, its material have employed high-strength steel, unimach, and this product material, after gas cutting operation, need carry out annealing in process to material.
So, should be for utilizing the conventional processes of spinning cylinder blank forming 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, there is the unsafe factor of operating aspect in unimach spinning cylinder blank flattening process simultaneously.
Summary of the invention
Loaded down with trivial details for overcoming the operation existed in prior art, cost is higher, there is the deficiency of unsafe factor in operation, the present invention proposes a kind of cylinder rolled forming method based on rotary press modelling base.
Concrete steps of the present invention are:
The first step, determines that the arc length ⌒ L of cylinder plate outer mold surface: described arc length ⌒ L is the width of cylinder plate; The arc length ⌒ L of spinning cylinder blank outer mold surface is obtained 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 wall thickness of this cylinder is identical with the wall thickness of spinning cylinder blank.
Second step, spinning cylinder blank is rule: described line on spinning cylinder blank is the size determining cylinder plate formed thereby, and its detailed process is; Camber line is marked, the length=⌒ L of this camber line along the circumference of this spinning cylinder blank at spinning cylinder blank external peripheral surface.Along the length direction of spinning cylinder blank to do on the surface of this spinning cylinder blank two with the straight line of the centerline parallel of this spinning cylinder blank, and these two straight lines cross one end of described camber line respectively, be the size of cylinder plate formed thereby at the arc area that the circumferential surface of spinning cylinder blank is formed by described camber line and two straight lines;
3rd step, forming cylinder plate: along the measure of the cylinder plate of delimiting at spinning cylinder blank circumferential surface, obtain the plate of arc.
4th step, rolls cylinder: described in roll cylinder and be, be made for cylinder by obtaining arc plate by conventional roll bending method.Butt welding is carried out to the seam crossing of the cylinder obtained.
5th step, carries out school circle to cylinder: carry out school circle by conventional method to cylinder, completes cylinder and be shaped.
In the present invention, the method such as " central diameter " is adopted to calculate the spinning cylinder blank outer mold surface arc length size ⌒ L that external diameter required when shaped outer diameter is the cylinder of d is D, and mark one section of camber line at spinning cylinder blank external peripheral surface along the circumference of this spinning cylinder blank, arc length is of a size of ⌒ L, along the length direction of spinning cylinder blank to do on the surface of this spinning cylinder blank L two with the straight line of the centerline parallel of this spinning cylinder blank, and these two straight lines cross one end of described camber line respectively, the arc area (see figure 3) of ⌒ L × l × t is formed at the circumferential surface of spinning cylinder blank by described camber line and two straight lines, and by the blanking of machine add mode, define the arc plate rolled needed for cylinder.
In the present invention, the wall thickness of cylinder is identical with the wall thickness of spinning cylinder blank, 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 according to cylinder and determine, as drum length requires excessive, the circular seam welding of more than one piece cylinder can be taked to connect the method for lengthening.
Compared with the present invention is shaped with conventional cylinder, in materials, avoid the waste that buying whole plate brings; In processing, eliminate the operations such as flattening, blanking, plane limit, optimize process greatly, saved cost.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention;
Fig. 2 for being divided into arc length size milling line schematic diagram needed for type cylinder on spinning cylinder blank.
Fig. 3 on spinning cylinder blank by arc length size milling backarc plate schematic diagram needed for forming cylinder.
Fig. 4 is cylinder shaping schematic diagram after milling arc soil weld.
Detailed description of the invention
Embodiment one
The present embodiment is a kind of cylinder rolled forming method based on mould pressing base.
Outside diameter d=the 1200mm of cylinder formed thereby, thickness t=5.4mm, length l=1950mm adopt outer diameter D=2000mm, and the spinning cylinder blank of thickness t=5.4mm, length l=1950mm is shaped, and cylinder material is 30Cr3SiNiMoVA.Its specific implementation process is as follows:
The first step, determines the arc length of cylinder plate outer mold surface.Described arc length ⌒ L is the width of cylinder plate.
The arc length ⌒ L of spinning cylinder blank outer mold surface is obtained 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 wall 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, spinning cylinder blank is rule: described line on spinning cylinder blank is the size determining cylinder plate formed thereby, and its detailed process is; According to the ⌒ L obtained, mark camber line, the length=⌒ L of this camber line at spinning cylinder blank external peripheral surface along the circumference of this spinning cylinder blank.Along the length direction of spinning cylinder blank to do on the surface of this spinning cylinder blank two with the straight line of the centerline parallel of this spinning cylinder blank, and these two straight lines cross one end of described camber line respectively, be the size of cylinder plate formed thereby at the arc area that the circumferential surface of spinning cylinder blank is formed by described camber line and two straight lines
In the present embodiment, at the length ⌒ L=3763mm of spinning cylinder blank external peripheral surface camber line.The arc area of ⌒ 3763mm × 1950mm × 5.4mm is formed at the circumferential surface of spinning cylinder blank by described camber line and two straight lines.
3rd step, is clamped on vertical knee-type milling machine by spinning cylinder blank, makes milling cutter be positioned at the arc area side edge with spinning cylinder blank circumferential surface.Described milling cutter carries out milling along two straight lines of spinning cylinder blank circumferential surface, is removed by the plate beyond described spinning cylinder blank circumferential surface arc area, 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 obtaining arc is ⌒ 3763mm × 1950mm × 5.4mm.
4th step, rolls cylinder.The described cylinder that rolls is rolled by the plate obtaining arc to become cylinder.The plate of described arc is placed on veneer reeling machine, adopts conventional roll bending method, the plate of described arc is rolled and becomes cylinder.In the present embodiment, the outside diameter of cylinder d=1200mm rolled.Butt welding is carried out to the seam crossing of the cylinder obtained.
5th step, carries out school circle to cylinder, carries out school circle, make it reach technical requirement by conventional method to cylinder, completes cylinder and is shaped.
Embodiment two
The present embodiment is a kind of cylinder rolled forming method based on mould pressing base.
Outside diameter d=the 1200mm of cylinder formed thereby, thickness t=4.25mm, length l=1350mm adopt outer diameter D=1400mm, and the spinning cylinder blank of thickness t=4.25mm, length l=1350mm is shaped, and cylinder material is D406A.Its specific implementation process is as follows:
The first step, determines the arc length of cylinder plate outer mold surface.Described arc length ⌒ L is the width of cylinder plate.
The arc length ⌒ L of spinning cylinder blank outer mold surface is obtained 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 wall 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, spinning cylinder blank is rule: described line on spinning cylinder blank is the size determining cylinder plate formed thereby, and its detailed process is; According to the ⌒ L obtained, mark camber line, the length=⌒ L of this camber line at spinning cylinder blank external peripheral surface along the circumference of this spinning cylinder blank.Along the length direction of spinning cylinder blank to do on the surface of this spinning cylinder blank two with the straight line of the centerline parallel of this spinning cylinder blank, and these two straight lines cross one end of described camber line respectively, be the size of cylinder plate formed thereby at the arc area that the circumferential surface of spinning cylinder blank is formed by described camber line and two straight lines
In the present embodiment, at the length ⌒ L=3768mm of spinning cylinder blank external peripheral surface camber line.The arc area of ⌒ 3768 × 1350mm × 4.25mm is formed at the circumferential surface of spinning cylinder blank by described line and two straight lines.
3rd step, forming cylinder plate: be clamped on vertical knee-type milling machine by spinning cylinder blank, makes milling cutter be positioned at the arc area side edge with spinning cylinder blank circumferential surface.Described milling cutter carries out milling along two straight lines of spinning cylinder blank circumferential surface, is removed by the plate beyond described spinning cylinder blank circumferential surface arc area, 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 obtaining arc is ⌒ 3768mm × 1350mm × 4.25mm.
4th step, rolls cylinder: described in roll cylinder be rolled by the plate obtaining arc to become cylinder.The plate of described arc is placed on veneer reeling machine, adopts conventional roll bending method, the plate of described arc is rolled and becomes cylinder.In the present embodiment, the outside diameter of cylinder d=1200mm rolled.Butt welding is carried out to the seam crossing of the cylinder obtained.
5th step, carries out school circle to cylinder: carry out school circle by conventional method to cylinder, make it reach technical requirement, completes cylinder and be shaped.
Claims (1)
1., based on a cylinder rolled forming method for rotary press modelling base, it is characterized in that, concrete steps are:
The first step, determines that the arc length ⌒ L of cylinder plate outer mold surface: described arc length ⌒ L is the width of cylinder plate: the arc length ⌒ L being obtained 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 wall thickness of this cylinder is identical with the wall thickness of spinning cylinder blank;
Second step, spinning cylinder blank is rule: described line on spinning cylinder blank is the size determining cylinder plate formed thereby, and its detailed process is; Camber line is marked, the length=⌒ L of this camber line along the circumference of this spinning cylinder blank at spinning cylinder blank external peripheral surface; Along the length direction of spinning cylinder blank to do on the surface of this spinning cylinder blank two with the straight line of the centerline parallel of this spinning cylinder blank, and these two straight lines cross one end of described camber line respectively, be the size of cylinder plate formed thereby at the arc area that the circumferential surface of spinning cylinder blank is formed by described camber line and two straight lines;
3rd step, forming cylinder plate: along the measure of the cylinder plate of delimiting at spinning cylinder blank circumferential surface, obtain the plate of arc;
4th step, rolls cylinder: described in roll cylinder and be, the plate volume obtaining arc is made for cylinder by the roll bending method of routine; Butt welding is carried out to the seam crossing of the cylinder obtained;
5th step, carries out school circle to cylinder: carry out school circle by conventional method to cylinder, completes 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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| CN102974988B true CN102974988B (en) | 2015-04-08 |
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| CN104139281B (en) * | 2014-06-27 | 2016-03-02 | 湖北三江航天红阳机电有限公司 | A kind of titanium alloy circular arc thin-walled parts fixture for forming and method |
| 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 |
| 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 |
| 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 |
| 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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| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08174249A (en) * | 1994-12-20 | 1996-07-09 | Nkk Corp | Manufacture of welded steel pipe |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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