CN104511513A - Drawing method of edge sealing frame type part hydraulically formed based on rubber bladder - Google Patents
Drawing method of edge sealing frame type part hydraulically formed based on rubber bladder Download PDFInfo
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- CN104511513A CN104511513A CN201310460380.2A CN201310460380A CN104511513A CN 104511513 A CN104511513 A CN 104511513A CN 201310460380 A CN201310460380 A CN 201310460380A CN 104511513 A CN104511513 A CN 104511513A
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Abstract
The invention belongs to the feild of a machinery manufacturing technology and relates to a drawing method of an edge sealing frame type part hydraulically formed based on a rubber bladder. The drawing method comprises the following steps of: step 1, analyzing according to the part forming technology and the material forming features, confirming the drawing direction and the part position easily wrinkled, and further confirming the amount, position and shape of drawing thresholds or drawing ribs on a drawing and shaping die, and designing and manufacturing the drawing and shaping die; step 2, selecting the forming material status, the wool size, the material fiber direction and the forming pressure of the hydraulic forming machine of the rubber bladder, and manufacturing the part. According to the drawing method, the part can be formed by one time, the part cannot be affected due to sizing after being quenched and the drawing and forming effect is ensured, so that the part surface is higher in quality and better in rigidity, and the adhesion quality of the edge sealing frame type part is also improved.
Description
Technical field
The invention belongs to machinery manufacturing technology field, relate to a kind of edge banding frame class part drawing method based on rubber pocket hydroforming.
Background technology
Aircraft edge banding frame class part for meeting splicing demand, to its surface quality and planarity requirements higher, and the shape and structure more complicated of such part, mostly is space curved surface structure.For such part, material is thin, and the folding and unfolding of expecting in forming process is comparatively large, and flange very easily produces fold; Traditional sheet metal process needs manual school shape after being shaped, and inevitably produces hammer trace.These problems all directly affect and govern forming quality and the bonding quality of part.
In current Domestic Aircraft manufacturing, still rest on plain edition mold forming technique to the application of rubber pocket hydro-forming machine, edge banding frame class part forming adopts common pattern or pressing mold to be shaped; mould structure is complicated; cost is higher, and forming quality is poor, increases the manufacturing cost of part.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of edge banding frame class part drawing method based on rubber pocket hydroforming, solve in edge banding frame class part forming process the problem of distortion after creasing easily and being shaped, reduce manufacturing cost, improve part forming quality.
Technical scheme of the present invention is: a kind of edge banding frame class part drawing method based on rubber pocket hydroforming, is characterized by and said method comprising the steps of:
Step one, according to the shaping characteristic analysis of part forming manufacturability and material thereof, determines that drawing direction and part crease easily position, thus determines to arrange the quantity of drawing sill or bead, position and shape on drawing and shaping die, designs and manufactures drawing and shaping die;
Step 2, selects shaping materials behavior, woollen size according to the design of draw forming die, material fiber direction puts and rubber pocket hydro-forming machine forming pressure, finished parts.
The invention has the beneficial effects as follows: the disposable shaping completing part of the present invention, after avoiding quenching, school shape is on the impact of part, also ensure that the effect of draw forming simultaneously, makes surface quality of workpieces higher, rigidity is better, improves the bonding quality of edge banding frame class part; Test proves, adopts the present invention, and Design of Dies and manufacturing cycle shorten 70%, and manufacturing cost reduces by 55%, rubber pocket hydro-forming machine working cycles 3 ~ 5min, easy to operate, and forming period shortens, and production efficiency is greatly improved.
Detailed description of the invention
Below the specific embodiment of the present invention is described further.
General thought of the present invention adopts to move material method, and Design of Dies adds bead or drawing sill, makes bent edge part change biaxial tension distortion into or the excess stock easily producing fold part is transferred in drawing sill.While woollen is bending, in addition tangential pulling force, changes the stress state in woollen section, reduces or substantially eliminate bending springback, thus improve the shaping degree of accuracy of part.
Step one, according to the shaping characteristic analysis of part forming manufacturability and material thereof, determines that drawing direction and part crease easily position, thus determines to arrange the quantity of drawing sill or bead, position and shape on drawing and shaping die, designs and manufactures drawing and shaping die.
In the present invention, the emphasis of drawing die design is the determination of bead and drawing sill.Bead and drawing sill play drawing effect to material on mould, can control the flowing of whole drawing blank material, increase or reduce the charging resistance at each position on binder surface, give full play to the plastic property of material according to the needs of drawn component.By the quantity of rational Choice and design bead or drawing sill, position and shape, drawing could go out meet the part of designing requirement.
Under the counterpressure effect of rubber pocket hydro-forming machine, produce biaxial tension distortion while utilizing drawing die to make part forming or the excess stock easily producing fold part is transferred in drawing sill.Utilize bead to the drawing effect of woollen, give full play to the plasticity of material, reduce or substantially eliminate bending springback, thus improve the shaping degree of accuracy of part.
For the recess typical part of flanged limit, such part adopts traditional hydraulic press to be shaped usually, because punch-die is shaped very large dimple formation in pressing process, produces fold unavoidably on flange, in addition the resilience that material is certain, makes part be difficult to paste mould completely.According to the shaping characteristic analysis of part forming manufacturability and material thereof, determine the radical of bead, position and shape, as calculated, the influx of material is about 20mm.By analyzing this kind of former process of part, finding the fold position of part, adopting circular bead, increase the bead of conformal in this position, prevent part forming process from producing fold.Through forming test, prove that this drawing die meets instructions for use, high-quality part can be produced.
Material thinner (0.4mm), space structure is the edge banding frame class part of curved surface, need glued joint, its surface quality and planarity requirements higher.For its forming difficulty, the problem of the easy distortion of manual trimming, can design two groups of drawing dies that four parts are shaped together.By the analysis of flowing to part forming process in which materials, determine drawing direction, devise interior doughnut-shaped monolithic bead, prevent part wrinkles at hem.For preventing agitating in flange forming process, ensureing the flatness of part, adding integral ring-shaped drawing sill in mould outer rim again, disposable shaping four parts.Through forming test, this mould meets instructions for use, and can produce the edge banding frame class part of great surface quality requirement.This mould one-mold multiple-member, improves production efficiency, reduces die manufacturing cost.
Step 2, selects shaping materials behavior, woollen size according to the design of draw forming die, material fiber direction puts and rubber pocket hydro-forming machine forming pressure, finished parts.
Before the major influence factors of draw forming is that part is just shaped, the aspects such as rubber pocket hydro-forming machine forming pressure are put and are used in the selection of materials behavior, the size of part woollen size, material fiber direction.Because the general material of edge banding frame class part is that thickness is no more than 0.8mm aluminium alloy plate, is shaped under material T4 state, is easy to drawing crack, so general technology scheme adopts carry out annealing postforming to material.Or adopt materials behavior to be that the material of O forms, but still need quenching process after part forming, part is heated stress influence after quenching, is out of shape irregular and comparatively serious, needs workman to spend the plenty of time to correct shape.School shape process inevitably makes piece surface produce hammer trace, affects the bonding quality of edge banding frame class part.
In order to solve above problem, draw forming technology can be combined with " one-step method " forming technique.Alloy plate material is quenched, after quenching, adopts the way of low tempertaure storage, keep the good plasticity of alloy plate material under new as-quenched.Under the counterpressure effect of rubber pocket hydro-forming machine, produce biaxial tension distortion while utilizing drawing die to make part forming or the excess stock easily producing fold part is transferred in drawing sill.Utilize bead to the drawing effect of woollen, give full play to the plasticity of material, reduce or substantially eliminate bending springback, thus improve the shaping degree of accuracy of part.The disposable shaping completing part of the method, after avoiding quenching, school shape is on the impact of part, also ensure that the effect of draw forming simultaneously, makes surface quality of workpieces higher, and rigidity is better, improves the bonding quality of edge banding frame class part.
Through drawing test repeatedly, find the size of woollen size and the placement direction in material fiber direction, have very large impact to draw forming.The size of woollen size directly affects the size of drawing area, thus affects the size of drawing pressure, and excessive drawing area drawing pressure is comparatively large, can cause part drawing crack in forming process; Too small drawing area drawing pressure is then less, can cause producing fold in part forming.Therefore, suitable woollen size is selected directly to affect the quality of draw forming.In addition, machine direction should be parallel to the larger direction of extensibility, is more conducive to the shaping of part.
Claims (1)
1., based on an edge banding frame class part drawing method for rubber pocket hydroforming, it is characterized by and said method comprising the steps of:
Step one, according to the shaping characteristic analysis of part forming manufacturability and material thereof, determines that drawing direction and part crease easily position, thus determines to arrange the quantity of drawing sill or bead, position and shape on drawing and shaping die, designs and manufactures drawing and shaping die;
Step 2, selects shaping materials behavior, woollen size according to the design of draw forming die, material fiber direction puts and rubber pocket hydro-forming machine forming pressure, finished parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460380.2A CN104511513A (en) | 2013-09-30 | 2013-09-30 | Drawing method of edge sealing frame type part hydraulically formed based on rubber bladder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310460380.2A CN104511513A (en) | 2013-09-30 | 2013-09-30 | Drawing method of edge sealing frame type part hydraulically formed based on rubber bladder |
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| CN104511513A true CN104511513A (en) | 2015-04-15 |
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| CN201310460380.2A Pending CN104511513A (en) | 2013-09-30 | 2013-09-30 | Drawing method of edge sealing frame type part hydraulically formed based on rubber bladder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199265A (en) * | 2016-03-17 | 2017-09-26 | 哈尔滨飞机工业集团有限责任公司 | A kind of U-shaped class part shaping techniques with radian |
| CN107755509A (en) * | 2016-08-23 | 2018-03-06 | 哈尔滨飞机工业集团有限责任公司 | Sheet metal drawing forming process method |
| CN108237173A (en) * | 2017-12-08 | 2018-07-03 | 西安飞机工业（集团）有限责任公司 | A kind of Double curve degree rectangle strengthens the rubber hydrochloride method of inside panel |
| CN108237168A (en) * | 2017-12-08 | 2018-07-03 | 西安飞机工业（集团）有限责任公司 | Strengthen frame parts rubber pocket manufacturing process in a kind of aircraft male bend side |
| CN111085595A (en) * | 2019-12-13 | 2020-05-01 | 西安飞机工业（集团）有限责任公司 | Rubber forming method for multi-winding deep rib structure thin-wall reinforced panel part |
| CN112828118A (en) * | 2020-12-30 | 2021-05-25 | 中航贵州飞机有限责任公司 | Method for controlling wrinkling phenomenon of part with convex bent edge characteristic during forming of rubber bag |
| CN114101452A (en) * | 2021-11-03 | 2022-03-01 | 哈尔滨飞机工业集团有限责任公司 | Forming method of locally-deformed Z-shaped section frame sealing part |
| CN114247810A (en) * | 2021-12-17 | 2022-03-29 | 中航贵州飞机有限责任公司 | Forming die and forming method for forming annular anisotropic flanging part by using rubber bag |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199265A (en) * | 2016-03-17 | 2017-09-26 | 哈尔滨飞机工业集团有限责任公司 | A kind of U-shaped class part shaping techniques with radian |
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| CN107755509A (en) * | 2016-08-23 | 2018-03-06 | 哈尔滨飞机工业集团有限责任公司 | Sheet metal drawing forming process method |
| CN108237173A (en) * | 2017-12-08 | 2018-07-03 | 西安飞机工业（集团）有限责任公司 | A kind of Double curve degree rectangle strengthens the rubber hydrochloride method of inside panel |
| CN108237168A (en) * | 2017-12-08 | 2018-07-03 | 西安飞机工业（集团）有限责任公司 | Strengthen frame parts rubber pocket manufacturing process in a kind of aircraft male bend side |
| CN108237168B (en) * | 2017-12-08 | 2023-05-23 | 西安飞机工业（集团）有限责任公司 | Rubber bag forming method for aircraft convex bent edge reinforcing frame part |
| CN111085595A (en) * | 2019-12-13 | 2020-05-01 | 西安飞机工业（集团）有限责任公司 | Rubber forming method for multi-winding deep rib structure thin-wall reinforced panel part |
| CN112828118A (en) * | 2020-12-30 | 2021-05-25 | 中航贵州飞机有限责任公司 | Method for controlling wrinkling phenomenon of part with convex bent edge characteristic during forming of rubber bag |
| CN114101452A (en) * | 2021-11-03 | 2022-03-01 | 哈尔滨飞机工业集团有限责任公司 | Forming method of locally-deformed Z-shaped section frame sealing part |
| CN114247810A (en) * | 2021-12-17 | 2022-03-29 | 中航贵州飞机有限责任公司 | Forming die and forming method for forming annular anisotropic flanging part by using rubber bag |
| CN114247810B (en) * | 2021-12-17 | 2023-09-29 | 中航贵州飞机有限责任公司 | Forming die and forming method for forming annular anisotropic crimping part by rubber bag |
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