CN1242860C - Flexible multi-point curved mold for forming plate - Google Patents

Flexible multi-point curved mold for forming plate Download PDF

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Publication number
CN1242860C
CN1242860C CN 03132626 CN03132626A CN1242860C CN 1242860 C CN1242860 C CN 1242860C CN 03132626 CN03132626 CN 03132626 CN 03132626 A CN03132626 A CN 03132626A CN 1242860 C CN1242860 C CN 1242860C
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China
Prior art keywords
die
elastic
die body
sheet material
little
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Expired - Fee Related
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CN 03132626
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Chinese (zh)
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CN1526490A (en
Inventor
王仲仁
滕步刚
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Harbin Institute of Technology
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Harbin Institute of Technology
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Priority to CN 03132626 priority Critical patent/CN1242860C/en
Publication of CN1526490A publication Critical patent/CN1526490A/en
Application granted granted Critical
Publication of CN1242860C publication Critical patent/CN1242860C/en
Expired - Fee Related legal-status Critical Current
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Abstract

The present invention discloses a die device for forming a plate with a curved surface, namely a die device for forming a plate with a flexible multi-point curved surface. The present invention consists of a male die assembly (1) and a female die assembly (2), wherein the male die assembly (1) comprises at least two elastic die bodies (1-1) and a bearing plate (1-2); the female die assembly (2) comprises an elastic shim plate (2-1), a protecting plate (2-2) and a small die set (2-3) which comprises a plurality of small dies (2-3-1) which can be regulated from top to bottom. The elastic die bodies (1-1) which are overlapped with each other are flaky bodies, and the external dimension of the elastic die body (1-1-1) which is positioned at the upper part is different from the external dimension of the elastic die body (1-1-2) which is positioned at the lower part. The bearing plate (1-2) is arranged on the upper surface of the elastic die body (1-1-1), and the elastic shim plate (2-1) is arranged on the upper surface of the protecting plate (2-2) which can be deformed in a bending way. The lower surface of the protecting plate (2-2) is in contact with the upper tops of the small dies (2-3-1), and the male die assembly (1) and the female die assembly (2) are overlapped from top to bottom. The die device has the advantages of less quantity of the small dies, low manufacturing cost of the device, short time for regulating the die, and smooth surface of a workpiece.

Description

Sheet material flexible multi-point curve generating die device
Technical field
The present invention is the die device of curved surface sheet material forming, belongs to the sheet forming technical field.
Background technology
In aviation, shipbuilding, petrochemical industry and building trade, curved surface sheet material is usually used in as the coverboard of the deck of boat, wind-tunnel contraction body plate, special pressure container and building roof etc., traditional curved surface sheet material forming mainly is a depended on pressure machine die forming, its die cost costliness only is suitable for producing in enormous quantities.It is the main technique of ship hull plate curve generating at present that flame forming plate is shaped, its basic principle is to reach whole curve generating by the cooled thermo-elasto-plasticity distortion of dull and stereotyped (or unidirectional curved slab) localized hyperthermia, but this technology mainly is to finish with experienced operator's practical experience and manual operations, production efficiency is low, and crudy is not high.But utilize spinning forming process processing curve sheet material, but it only is suitable for processing the Axisymmetrical Curved Parts with closed circular perimeter.Flexible manufacturing is the development trend of processing industry, and it is suitable for multi-varieties and small-batch or even single-piece production.Usually the curve generating of sheet material needs the pattern tool to realize.The mould that has occurred " non-mould multi-point forming " or " the discontinuous die forming of variable profile " in recent years; its essence is by the synthetic circular formwork of the little module of quantity a lot of (can reach more than 1,000); two templates are formed a mold up and down; little mould mutually near; but each little mould is along its axis up-down adjustment; therefore can constitute the curved surface of shape variable; as shown in Figure 1; patrix among this figure is identical with the curved surface of counterdie; and the little mould in the patrix is corresponding one by one with little mould in the counterdie, and sheet material just is shaped in this assembling die.This method is applied in shipbuilding and the locomotive manufacturing industry in aviation.The shortcoming of this processing method is as follows: the time that (1) regulates mould because of little modulus amount more is long; (2) the precision height of parts is regulated in requirement, and each little mould need be waitd upon the clothes motor-driven, thereby the manufacturing cost height; (3) surface of the work that processes is easily rough and uneven in surface.
Summary of the invention
For the sheet material curve generating technology that overcomes prior art is regulated time length, the device fabrication cost height of mould and the easy rough defective of surface of the work that processes, provide a kind of adjusting mould simple, the sheet material curve generating die device that the device fabrication cost is low and processed workpiece has an even surface.The present invention is achieved by following proposal: a kind of sheet material flexible multi-point curve generating die device, it is made up of punch assemblies 1 and die assembly 2, punch assemblies 1 is made up of at least two elastic die body 1-1 and bearing plate 1-2, die assembly 2 is by resilient sleeper-bearing 2-1, backplate 2-2 and little set of molds 2-3 form, stacked elastic die body 1-1 is plates mutually, the appearance and size of elastic die body 1-1-1 above being positioned at is variant with the elastic die body 1-1-2 that is positioned at the below, bearing plate 1-2 is arranged on the upper surface of elastic die body 1-1-1, resilient sleeper-bearing 2-1 is arranged on the upper surface of the diastrophic backplate 2-2 of energy, the lower surface of backplate 2-2 contacts with the upper top of little mould 2-3-1, and punch assemblies 1 is stacked up and down with die assembly 2.Described little set of molds 2-3 is made up of several little mould 2-3-1, several tringles 2-3-2 and motherboard 2-3-3, tringle 2-3-2 is distributed on the upper surface of motherboard 2-3-3 and perpendicular to motherboard 2-3-3, external screw thread links on the cavity internal thread of the little mould 2-3-1 of cap shape and the body of rod outer surface of tringle 2-3-2.Mould of the present invention is when machining sheet, elder generation is according to the curve form of required Forming Workpiece, regulate each little mould height, thereby form needed spill die cavity, and cavity shape is reasonably selected and is arranged the size of elastic die body according to this, then sheet material 3 is arranged between elastic die body 1-1-2 and the resilient sleeper-bearing 2-1.During shaping, the forcing press top shoe moves downward, after acting on elastic die body 1-1 by bearing plate 1-2, elastic die body 1-1 distortion, and with the force transmission of forcing press to sheet material 3 and backplate 2-2, along with further moving down of top shoe, elastic die body 1-1 continues to be compressed, and its applied pressure constantly increases, and makes backplate 2-2 contact gradually with the upper top of all little moulds that constitute curve-surface cavity, simultaneously, formed thereby sheet material 3 is by elastic die body 1-1 and backplate 2-2 setting.In the forming process, sheet material 3 blank upper surfaces are subjected to elastic die body 1-1 by little and big pressure effect, when elastic die body 1-1 is pressed into die with sheet material, elastic die body 1-1 above the sheet material and the resilient sleeper-bearing 2-1 below the sheet material are compressed and outwards flow along sheet material 3 surfaces, the sheet material upper and lower surface produces friction respectively and between elastic die body 1-1 and the resilient sleeper-bearing 2-1, along with constantly moving down of slide block, the suffered unit pressure of drip molding is big more, and frictional force is also big more.The existence of friction tension has changed the distribution situation of sheet material internal stress, simultaneously, because after the shaping beginning, the elastic compression distortion takes place in elastic die body 1-1, and sheet material is very fast all around to be contacted with elastic die body 1-1, and the contact area between sheet material and the workpiece has increased many, sheet material is tied to be strengthened, thereby be subjected to the effect of pressure-pad-force around the sheet material, and, along with deepening continuously of being shaped, this pressure-pad-force increases gradually, thereby has suppressed generation of defects such as wrinkling.The advantage of the die device that the present invention proposes is as follows: 1) can reduce 2/3rds for the required little modulus amount of the workpiece of the same shape of same size, one of reason is that punch has adopted elastomer, do not need the little mould of rigidity, former two is not need to arrange very closely between each little mould of die therefore, and certain distance can be arranged; This can reduce the manufacturing cost of mould; The workload that mould is regulated when 2) changing shape of product and size alleviates a lot, and the time of regulating mould can shorten, and this mainly is because the cause that needs the little modulus amount of adjusting to reduce.3) surface of the work is level and smooth, and is no rough and uneven in surface, and this mainly is because backplate 2-2 and resilient sleeper-bearing 2-1 isolate the little mould of sheet material 3 and rigidity.
Description of drawings
Fig. 1 is the structural representation of the multiple spot curve generating mould of prior art, and Fig. 2 is the structural representation of die device of the present invention.
The specific embodiment
The specific embodiment one: specify present embodiment below in conjunction with Fig. 2.Present embodiment is made up of punch assemblies 1 and die assembly 2, punch assemblies 1 is made up of at least two elastic die body 1-1 and bearing plate 1-2, die assembly 2 is by resilient sleeper-bearing 2-1, backplate 2-2 and the little set of molds 2-3 of the little mould 2-3-1 that includes several energy up-down adjustment form, stacked elastic die body 1-1 is plates mutually, the appearance and size of elastic die body 1-1-1 above being positioned at is variant with the elastic die body 1-1-2 that is positioned at the below, bearing plate 1-2 is arranged on the upper surface of elastic die body 1-1-1, resilient sleeper-bearing 2-1 is arranged on the upper surface of the diastrophic backplate 2-2 of energy, the lower surface of backplate 2-2 contacts with the upper top of little mould 2-3-1, and punch assemblies 1 is stacked up and down with die assembly 2.Described little set of molds 2-3 is made up of several little mould 2-3-1, several tringles 2-3-2 and motherboard 2-3-3, tringle 2-3-2 is distributed on the upper surface of motherboard 2-3-3 and perpendicular to motherboard 2-3-3, external screw thread links on the cavity internal thread of the little mould 2-3-1 of cap shape and the body of rod outer surface of tringle 2-3-2.
The specific embodiment two: specify present embodiment below in conjunction with Fig. 2.The difference of present embodiment and embodiment one is that elastic die body 1-1 is fixed into as a whole.Other composition is identical with embodiment one with annexation.After elastic die body 1-1 was connected and becomes integral body, the stability of work improved greatly, was suitable for the processing of bigger in batches workpiece.
The specific embodiment three: the difference of present embodiment and embodiment one is that elastic die body 1-1-1 or elastic die body 1-1-2 are the rubber bag tanks that inside is full of liquid or Powdered body.The dispersion conduction that elastic die body 1-1-1 that is provided with like this or elastic die body 1-1-2 more help pressure.

Claims (3)

1, a kind of sheet material flexible multi-point curve generating die device, it is characterized in that it is made up of punch assemblies (1) and die assembly (2), punch assemblies (1) is made up of at least two elastic die bodies (1-1) and bearing plate (1-2), die assembly (2) is by resilient sleeper-bearing (2-1), backplate (2-2) and little set of molds (2-3) are formed, stacked elastic die body (1-1) is plates mutually, the appearance and size of the elastic die body (1-1-1) above being positioned at is variant with the elastic die body (1-1-2) that is positioned at the below, bearing plate (1-2) is arranged on the upper surface of elastic die body (1-1-1), resilient sleeper-bearing (2-1) is arranged on the upper surface of the diastrophic backplate of energy (2-2), the lower surface of backplate (2-2) contacts with the upper top of little mould (2-3-1), punch assemblies (1) is stacked up and down with die assembly (2), described little set of molds (2-3) is by several little moulds (2-3-1), several tringles (2-3-2) and motherboard (2-3-3) are formed, tringle (2-3-2) is distributed on the upper surface of motherboard (2-3-3) and perpendicular to motherboard (2-3-3), external screw thread links on the cavity internal thread of the little mould (2-3-1) of cap shape and the body of rod outer surface of tringle (2-3-2).
2, sheet material flexible multi-point curve generating die device according to claim 1 is characterized in that elastic die body (1-1) is fixed into as a whole.
3, sheet material flexible multi-point curve generating die device according to claim 1 is characterized in that elastic die body (1-1-1) or elastic die body (1-1-2) are the rubber bag tanks that inside is full of liquid or Powdered body.
CN 03132626 2003-09-22 2003-09-22 Flexible multi-point curved mold for forming plate Expired - Fee Related CN1242860C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03132626 CN1242860C (en) 2003-09-22 2003-09-22 Flexible multi-point curved mold for forming plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03132626 CN1242860C (en) 2003-09-22 2003-09-22 Flexible multi-point curved mold for forming plate

Publications (2)

Publication Number Publication Date
CN1526490A CN1526490A (en) 2004-09-08
CN1242860C true CN1242860C (en) 2006-02-22

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100381221C (en) * 2006-06-16 2008-04-16 重庆工学院 Sheet material mold-free multi-point forming device based on viscous medium transfer force and method
CN101648235B (en) * 2009-08-20 2011-04-06 吉林大学 Flexible roller contact molding rolling forming device
EP2479022A1 (en) * 2011-01-24 2012-07-25 Osterwalder AG Powder press
CN102814379A (en) * 2012-09-05 2012-12-12 哈尔滨工业大学空间钢结构幕墙有限公司 Numerical control multi-point die-free hydraulic bulging system for continuous formation of board
CN103861927B (en) * 2014-03-18 2016-01-20 哈尔滨工业大学 A kind of sheet material multiple spot punch liquid filling deep-drawing forming device and method
CN106001267A (en) * 2016-06-15 2016-10-12 重庆理工大学 Semi-rigid mold multi-point pressed molding system
AU2018387661A1 (en) * 2017-12-18 2020-06-18 Dsm Ip Assets B.V. Ballistic-resistant curved molded article
CN110102605B (en) * 2019-05-15 2020-04-28 燕山大学 Multipoint flexible reciprocating bending pressure straightening device and method for section bar

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Granted publication date: 20060222

Termination date: 20091022