CN104200037B - Method for designing forming dies for low-double-curvature sheet metal parts - Google Patents
Method for designing forming dies for low-double-curvature sheet metal parts Download PDFInfo
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- CN104200037B CN104200037B CN201410466110.7A CN201410466110A CN104200037B CN 104200037 B CN104200037 B CN 104200037B CN 201410466110 A CN201410466110 A CN 201410466110A CN 104200037 B CN104200037 B CN 104200037B
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Abstract
The invention relates to a method for designing forming dies for low-double-curvature sheet metal parts. The method includes steps of 1), initially designing four-piece integrated forming die profiles; 2), preliminarily simulating deep drawing forming technologies; 3), judging the rationality of die design technologies; 4), simulating deep drawing forming and spring-back technologies in detail; 5), computing and outputting spring-back compensation on the die profiles; 6), performing solid modeling on the dies in three-dimensional design software. The method has the advantages that all the four-piece double-curvature parts can be formed at one step by the aid of a deep drawing forming process, accordingly, the forming efficiency can be improved, the parts are low in spring-back rate, and the quality of the parts can be guaranteed.
Description
Technical field
The present invention relates to a kind of die design method of little Double curve degree sheet metal component, belongs to metal blank Plastic Forming neck
Domain.
Background technology
The sheet metal component single-piece has minimum Double curve degree, and four parts for having shape similar on single rack aircraft surround one
Circle, belongs to the somewhat larger Double curve degree curved surface of same curvature on assembly relation, and the technique that the part is now adopted is to divide for method
Single-piece carries out rubber pocket hydroforming and strikes the mode that school shape is combined of repairing with manual, and rubber pocket hydroforming is referred to uses hydraulic pressure rubber pocket
As general punch（Or die）, by metal blank according to rigid punch（Or die）The method for shaping, was shaping
Cheng Zhong, rubber pocket is both transmission medium, also functions to the effect of half module, belongs to flexible forming, but the part is deposited in forming process
In problems with：
1st, blank location difficulty, plate is easier to be moved when rubber pocket is pushed, and geometry is difficult to ensure that, percent defective
It is high；
2nd, because Double curve degree is too little, material experience elastic deformation has just enter into plastic period and produces after minimum deformation, rubber
Leather bag discharge degree, therewith plate produces serious resilience, and each several part resilience is uneven, irregular；
3rd, each part is required for carrying out manual school shape to huge, the parts list that pastes mould, artificial operation element amount after shaping
Face is of poor quality, low production efficiency.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of die design method of little Double curve degree sheet metal component.The party
Method adopts drawing forming method, four Double curve degree parts of once-forming whole not only to improve forming efficiency, and the resilience of part
Rate is little, it is ensured that the quality of part.
To solve problem above, the concrete technical scheme of the present invention is as follows：A kind of shaping dies of little Double curve degree sheet metal component
Method for designing, comprises the following steps：
1）Initial designs die face：In Three-dimensional Design Software, four little Double curve degree sheet metal components are pressed into assembly relation group
Close, and on same big Double curve degree face, the Double curve degree face is used for the mould of drawing and forming, and as the die of Drawing Die
Bottom surface, i.e., using the curved surface of four one as a box part bottom, bottom outer-edge is process allowance, and box part bottom is subtracted
Thin violent position controls that in the range of process allowance, the effective site of part must not be affected；
2）Preliminary drawing and forming process simulation：For the die for designing, using Three-dimensional Design Software according to die and part
Wall thickness generates corresponding punch surface and carries out drawing and forming process simulation with blank holder；
3）Mould design process reasonability judges：Whether plate size is judged according to preliminary drawing and forming process simulation result
Meet and require, i.e., plate is capable of being shaped to complete box part, and rationally whether, i.e., box part corner is thinning for mould process surplus
Region does not affect the live part of part, if meeting requirement carries out step 4, if being unsatisfactory for, return to step 1 is according to simulation result
Adjustment mould and plate, until Design of Dies it is reasonable；
4）Detailed drawing and forming and resilience process simulation：Optimization blank shape size and technological parameter, become material flowing
Shape smoothly, does not produce the defect such as drawing crack and corrugation, and the relatively thin rate of plate is as far as possible little；
5）Springback compensation is carried out to die face to calculate and export：The springback compensation carried out to die face is calculated using certainly
Dynamic model face compensating module, and according to result of calculation, export the IGS formatted files of the die face after springback compensation is calculated；
6）The solid modelling of mould is carried out in Three-dimensional Design Software.
The beneficial effect of the die design method of the little Double curve degree sheet metal component of the application：
1）It is once-forming to meet the demand once assembled using the mould of the method design in drawing and forming.
Plate positioning is relatively easy, and due to four one curved surface curvature more than single-piece curved surface curvature, equivalent to increased plate
The plastic deformation of material, and the variant of plate changes, and by an original almost compression chord, is changed into increased box-like
The stretching plastic deformation of part bottom, resilience is relatively reduced；
2）The method for employing CAD design and CAE Finite Element Numerical Simulation connected applications, is mould by numerical simulation result
Tool design provides the technological parameter of optimization used when rational geometry foundation and shaping, effectively increases the efficiency reduction of design
Design cycle, for actual production guidance is provided；
3）By carrying out springback compensation calculating to die face in design software Finite Element Numerical Simulation, in Design of Dies rank
Section solves the problems, such as part forming resilience, and farthest close digital-to-analogue is required the part gone out according to the die forming of the method manufacture
Theoretical size, greatly reduce the workload of artificial school shape.
Description of the drawings
Fig. 1 is the flow chart of the die design method of little Double curve degree sheet metal component.
Fig. 2 is the assembling schematic diagram of four little curvature sheet metal parts.
Fig. 3 is the plate schematic diagram in step 1.
Fig. 4 is the Drawing Die molding FEM (finite element) model of final design.
Fig. 5 is drawing and forming process simulation result schematic diagram.
Wherein 1-4 be respectively different little curvature sheet metal parts, 5 be punch, 6 be die, 7 be plate, 8 be blank holder.
Specific embodiment
A kind of die design method of little Double curve degree sheet metal component, as shown in figure 1, comprising the following steps：
1）Initial designs die face：The Three-dimensional Design Software adopted in the present embodiment is CATIA V5, will be as shown in Figure 2
Four little Double curve degree sheet metal components by assembly relation combine, material be aluminium alloy 2B06, O state, thickness be δ 1mm, four parts
Assembly relation is located on same big Double curve degree face；The Double curve degree face is used for the mould of drawing and forming, and as Drawing Die
Die bottom surface, i.e., using the curved surface of four one as a box part bottom, bottom outer-edge is process allowance, by box part bottom
The thinning violent position in portion controls that in the range of process allowance, the effective site of part must not be affected；
2）Preliminary drawing and forming process simulation：For the die for designing, using Three-dimensional Design Software according to die and part
Wall thickness generates corresponding punch surface encloses the land with flanging can carry out drawing and forming process simulation；Adopt in the embodiment
PAMSTAMP 2G softwares, simulation calculate the major parameter that adopts for：
Coefficient of friction between punch and plate：0.12；
Die and sheet blanks coefficient of friction：0.12；
Coefficient of friction between blank holder and plate：0.12；
The grid of the objects such as punch, die, blank holder and plate adopts self adaptation dividing mode；
Stock material is defined：Aluminium alloy 2B06, O state, thickness is δ 1mm, and orthotropic material model, stress should
The point junction curve that varied curve is obtained using one directional tensile test；
Punch and matrix is considered rigid body with blank holder, and after the completion of all properties setting, pre-treatment terminates, and submits to solve calculating to；
3）Mould design process reasonability judges：Whether plate size is judged according to preliminary drawing and forming process simulation result
Meet and require, i.e., plate is capable of being shaped to complete box part, and rationally whether, i.e., box part corner is thinning for mould process surplus
Region does not affect the live part of part, if meeting requirement carries out step 4, if being unsatisfactory for, return to step 1 is according to simulation result
Adjustment mould and plate, until Design of Dies it is reasonable；
4）Detailed drawing and forming and resilience process simulation：Optimization blank shape size as shown in Figure 3 and technological parameter, flanging
Reinforcing 100KN, punch downstream rate 5mm/s, final FEM (finite element) model is not produced as shown in figure 4, make material flow deformation smoothly
The defect such as drawing crack and corrugation, the relatively thin rate of plate is as far as possible little；Result after deforming simulation analysis is as shown in figure 5, be box part
A quarter, box part forming quality is good, and the grid of part live part is fully refined.Post processing result shows, box part
Thinning most violent position occurs in bottom corner, and wall thickness is 0.931mm, in the range of process allowance, and part effective district
The minimum wall thickness (MINI W.) in domain is 0.992mm, complies fully with design requirement；
5）Springback compensation is carried out to die face to calculate and export：The springback compensation carried out to die face is calculated using certainly
Dynamic model face compensating module, and according to result of calculation, export the IGS formatted files of the die face after springback compensation is calculated；
6）The solid modelling of mould is carried out in Three-dimensional Design Software.
Claims (1)
1. a kind of die design method of little Double curve degree sheet metal component, it is characterised in that comprise the following steps：
1）Initial designs die face：In Three-dimensional Design Software, four little Double curve degree sheet metal components are combined by assembly relation, and
On same big Double curve degree face, the Double curve degree face is used for the mould of drawing and forming, and as the die bottom surface of Drawing Die,
I.e. using the curved surface of four one as a box part bottom, bottom outer-edge is process allowance, by the thinning play in box part bottom
Strong position is controlled in the range of process allowance, must not affect the effective site of part；
2）Preliminary drawing and forming process simulation：For the die for designing, using Three-dimensional Design Software according to die and part wall thickness
Generate corresponding punch surface carries out drawing and forming process simulation with blank holder；
3）Mould design process reasonability judges：Judge whether plate size meets according to preliminary drawing and forming process simulation result
Require, i.e., plate is capable of being shaped to complete box part, whether mould process surplus is reasonable, i.e. the weakened region of box part corner
The live part of part is not affected, if meeting requirement carries out step 4）If being unsatisfactory for, return to step 1）Adjusted according to simulation result
Reshaping die and plate, until Design of Dies it is reasonable；
4）Detailed drawing and forming and resilience process simulation：Optimization blank shape size and technological parameter, make material flow deformation suitable
Profit, does not produce drawing crack and corrugated defect；
5）Springback compensation is carried out to die face to calculate and export：The springback compensation carried out to die face is calculated and uses automatic mold
Face compensating module, and according to result of calculation, export the IGS formatted files of the die face after springback compensation is calculated；
6）The solid modelling of mould is carried out in Three-dimensional Design Software.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105328048A (en) * | 2015-11-30 | 2016-02-17 | 重庆市华青汽车配件有限公司 | Mold design method for high-strength springback plate |
| CN105945099B (en) * | 2016-06-08 | 2018-07-31 | 中冶华天南京工程技术有限公司 | Sintering circular-cooler bend manufacturing method |
| CN107085649B (en) * | 2017-06-19 | 2023-10-17 | 沈阳飞机工业（集团）有限公司 | Finite element model and method for preventing movement during part forming |
| CN107330222B (en) * | 2017-07-21 | 2020-10-27 | 吴锦 | Method for designing molded surface of blank holder of mold |
| CN107577898A (en) * | 2017-09-22 | 2018-01-12 | 华南理工大学 | A kind of cupping tool structure generation method and system |
| CN108941321B (en) * | 2018-05-30 | 2021-05-25 | 广州广汽荻原模具冲压有限公司 | Method for manufacturing stamping die of beam parts |
| CN109127945B (en) * | 2018-08-01 | 2020-04-21 | 武汉理工大学 | Method for regulating and controlling stamping forming precision of lightweight car body covering part |
| CN109977603A (en) * | 2019-04-10 | 2019-07-05 | 哈尔滨理工大学 | A kind of method of quick detection irregular bottom plate material parts bottom mold |
| CN111967172B (en) * | 2020-07-06 | 2024-05-17 | 华南理工大学 | Internal high-pressure forming process optimization design method based on kriging model |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102567577A (en) * | 2011-12-16 | 2012-07-11 | 沈阳飞机工业（集团）有限公司 | Rapid die compensation method considering rebound of bent part |
| CN102982200A (en) * | 2012-11-06 | 2013-03-20 | 西北工业大学 | Design method of airplane frame and rib type sheet metal part processing model |
Family Cites Families (1)
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|---|---|---|---|---|
| JP2011133921A (en) * | 2009-12-22 | 2011-07-07 | Hitachi Ltd | Design support method for die surface shape |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102567577A (en) * | 2011-12-16 | 2012-07-11 | 沈阳飞机工业（集团）有限公司 | Rapid die compensation method considering rebound of bent part |
| CN102982200A (en) * | 2012-11-06 | 2013-03-20 | 西北工业大学 | Design method of airplane frame and rib type sheet metal part processing model |
Non-Patent Citations (1)
| Title |
|---|
| 低成本钣金成形模具技术;刘天骄等;《航空制造技术》;20120501;第49-52页 * |
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