CN101607286A - Aluminum alloy curved part electromagnetic compound forming method and device - Google Patents
Aluminum alloy curved part electromagnetic compound forming method and device Download PDFInfo
- Publication number
- CN101607286A CN101607286A CNA2009100631281A CN200910063128A CN101607286A CN 101607286 A CN101607286 A CN 101607286A CN A2009100631281 A CNA2009100631281 A CN A2009100631281A CN 200910063128 A CN200910063128 A CN 200910063128A CN 101607286 A CN101607286 A CN 101607286A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- coil
- curved part
- shaping
- electro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A kind of aluminum alloy curved part electromagnetic compound forming method and device.This method is placed on aluminum alloy slab on the die; Storage capacitor to electro-magnetic forming equipment charges, and after charging voltage reaches shaping voltage, disconnects charge circuit; Under the effect of forcing press, the coil punch is pressed into aluminum alloy slab and carries out preform in the die, and keeps the shaping coil case well to contact with the aluminum alloy slab flange; Closed electromagnetic shaping discharge loop, storage capacitor discharges to form-wound coil by cable, and paste mould obtains required workpiece to the preform aluminum alloy curved part at a high speed under the effect of electromagnetic force.Building mortion comprises coil punch and shaping die, and the coil punch is formed with the curing of high strength insulating resin by electro-magnetic forming coil and coil case two parts.This method is combined with each other conventional drawing and even piezoelectricity magnetic forming, has overcome that the shaping resilience is big, low precision, mould difficult design problem, has overcome the deficiency that single electro-magnetic forming only can be used for partial plastic forming again.
Description
Technical field
The invention belongs to mechanical engineering field, be specially aluminum alloy curved part electromagnetic compound forming method and device.Be mainly used in the forming accuracy that improves aluminum alloy curved part, solve the problem of aluminum alloy curved part mould difficult design.
Background technology
Along with the light-weighted development trend of manufacturing structures such as automobile, Aero-Space, high strength low density materials such as aluminium alloy are used day by day to be increased.But the control that an important difficult problem is exactly a forming accuracy that aluminum alloy plate materials is shaped, wherein the distinct issues of bending forming are the accurate control of bool resilience.Even because the same trade mark, with batch aluminum alloy plate materials, because the inhomogeneities of material structure causes the fluctuation of its changes of properties and forming technology condition, all can cause the bigger variation of bool springback capacity, thereby the shape and size of bool and desired shape and size are not inconsistent.
Because factors such as aerodynamics and outward appearance are more and more paid attention to by automobile, aircraft industry, so its surface covering parts and covering spare begin a large amount of curved surface streamlineds that are designed to.The resilience control of the curve generating spare of this space structure is more than common bool complexity, can reduce the workpiece springback capacity to a certain extent by the technology controlling and process method, but owing to lack necessary theoretical direction, often need a large amount of field trials, process adjustments also wants emphasis to consider wrinkling and control drawing crack in addition, so often can not obtain satisfied resilience control effect.For the curved surface part of light-weight metals such as aluminium alloy, in actual production, be easy to occur breaking, defective such as wrinkling, resilience, this has influenced the forming accuracy and the outward appearance of product product greatly.On the one hand, the plastic deformation percentage elongation of these materials itself is low, and elastic modelling quantity is little; Curved surface is irregular on the other hand, no explicit size datum in the shape process of school.What traditional sheet forming Mould design relied on is experience and intuition, and guarantees the quality that is shaped by debugging repeatedly.Particularly in the aircraft complex curved surface part is manufactured, often adopt the shaping back of dropping hammer to adopt the manual school of loose tool shape, not only need to consume great amount of manpower and material resources, cycle is long, efficient is low, and the distortion of part thickness direction is inhomogeneous, can lose efficacy because of local attenuation in the use, can not satisfy the use needs.Therefore, the curved surface bending forming technology of studying better aluminum alloy plate materials becomes lot of domestic and foreign scholar's goal in research.
Electro-magnetic forming can effectively improve the deformation condition of sheet material, improves deformability, thereby reduces or eliminates resilience.And have machining energy and be easy to advantages such as accurate control, forming speed are fast, Forming Workpiece precision height, mould is simple, equipment interoperability is strong, and forming process is pollution-free, wide application prospect is arranged in the shaping of lightweight material.Defectives such as at present the sheet material electro-magnetic forming adopts planar spiral winding and strip type coil more, has the magnetic pressure skewness, and coil efficiency is low have limited the range of application of plate blank electro-magnetic forming technology on this certain degree.Given this, professor G.S.Daehn of Ohio State University proposes a kind of plate blank uniform pressure coil discharge New Forming Process.There is a spill conductor channel outside of discharge coil, and it and plate have been formed the loop of a sealing.When capacitor discharge, flow through pulse current in the Inside coil, and in the loop of plate and recessed channel composition, bring out the opposite induced-current of direction (coil of the inside and the loop of outside are that insulation is good).Because the effect of flash electromagnetic force, metal blank pastes contour forming at a high speed.Because the complete wound coil in faradic loop, so the magnetic field energy loss is little, the efficient height, in addition, because coil is subjected to the reaction force of plate and recessed channel simultaneously, so the active force of coil is equivalent to concentrate on the axle, this also is favourable to the service life of improving coil.Than conventional planar spiral winding and lath coil, the magnetic pressure of uniform pressure coil distributes comparatively even, and forming efficiency is higher.But above-mentioned electro-magnetic forming coil and device all are suitable for the partial plastic forming or the shallow recessing, shallow drawing of flat part to be shaped, and can't be applied to the shaping of curved surface part preferably.
Therefore, the present invention proposes a kind of electromagnetic compound forming method and device of aluminum alloy curved part, and it is poor to solve the aluminum alloy curved part forming accuracy, and the problem of mould difficult design satisfies the production needs of aluminum alloy curved part better.
Summary of the invention
The object of the invention provides a kind of plastic processing method and device that can effectively improve the aluminum alloy curved part forming accuracy.A kind of aluminum alloy curved part electromagnetic compound forming method and device.
Aluminum alloy curved part electromagnetic compound forming method step of the present invention following (referring to accompanying drawing):
(1) aluminum alloy slab is placed on the shaping die 1;
(2) storage capacitor to electro-magnetic forming equipment charges, and after charging voltage reaches shaping voltage, disconnects charge circuit;
(3) under the effect of forcing press, coil punch 3 is pressed into aluminum alloy slab and carries out preform in the shaping die 1, and keeps shaping coil case 3-3 well to contact with the aluminum alloy slab flange;
(4) closed electromagnetic shaping discharge loop, to electro-magnetic forming coil 3-1 discharge, the preform aluminum alloy curved part pastes mould at a high speed to storage capacitor under the effect of electromagnetic force, promptly obtain required workpiece by cable.
Wherein, described aluminum alloy slab thickness is 0.2～3.0mm.
Described shaping voltage is set according to required discharge energy, and the shaping voltage range is 3～20KV, and required discharge energy is: when aluminum alloy slab thickness was 0.2～1.0mm, discharge energy value scope was 3～40KJ; When aluminum alloy slab thickness was 1.0～3.0mm, the discharge energy value range was 10～200KJ.Workpiece size is big more, and required discharge energy is high more.
The relational expression of shaping voltage and discharge energy: E=1/2 * C * V
2
In the formula, E-energy, unit: Jiao Er (J);
C-electric capacity (energy-storage capacitor electric capacity), unit: farad;
V-shaping voltage, unit: volt.
Aluminum alloy curved part electromagnetic compound forming method of the present invention is characterized in that: shaping die 1 is fixed on the press bench face, and coil punch 3 is fixed on the forcing press top shoe; Starting stage, the forcing press top shoe is descending, and coil punch 3 is pressed into preform in the shaping die with aluminum alloy slab, and makes form-wound coil shell 3-3 compress the slab flange; By electro-magnetic forming equipment the electro-magnetic forming coil discharge is shaped then and obtains workpiece.
Aluminum alloy curved part electromagnetic compound forming method of the present invention, in the forming process, being about to aluminum alloy slab under the forcing press top shoe is pressed in the shaping die process, and the storage capacitor of electro-magnetic forming equipment is finished charging synchronously, and i.e. discharge was shaped and obtains workpiece after the preform process finished.
The device of aluminum alloy curved part electromagnetic compound forming of the present invention comprises coil punch 3 and shaping die 1; Wherein, coil punch 3 adopts high strength insulating resin 3-2 to be cured as one by electro-magnetic forming coil 3-1 and form-wound coil shell 3-3 two parts to form.
The device of aluminum alloy curved part electromagnetic compound forming of the present invention, it is characterized in that: coil punch 3 enveloping surfaces are the equidistant surface of aluminum alloy curved part profile, and material of translation is thick, the profile enveloping surface of electro-magnetic forming coil 3-1 is the equidistant surface of coil punch profile, and insulating barrier distance of translation.
The device of aluminum alloy curved part electromagnetic compound forming of the present invention is characterized in that: shaping die 1 is pressed the design of aluminum alloy curved part appearance and size, need not to consider springback factor.
Aluminum alloy curved part electromagnetic compound forming method advantage of the present invention is:
1, this method to the electro-magnetic forming coil generation strong pulsed magnetic field that sparks, makes the preform aluminum alloy curved part paste mould under the electromagnetic force effect at a high speed impacting by storage capacitor.Because in the discharge forming process, form-wound coil shell and aluminum alloy slab constitute a loop, form-wound coil provides equally distributed magnetic pressure to curved surface part, make curved surface part produce plastic deformation comparatively uniformly, even micro-attenuate by thickness direction is eliminated resilience, can effectively avoid because the uneven adverse effect that the part serviceability is produced of thickness direction distortion.
2, this method is combined with each other conventional drawing and even piezoelectricity magnetic forming, to spare the line ball circle and the drawing punch integrates, it is big both to have overcome conventional drawing resilience, forming accuracy is poor, the limitation of mould difficult design, energy limited overcome single electro-magnetic forming again owing to only can be used for partial plastic forming (bulging, impression) or the deficiency that is shaped of shallow recessing, shallow drawing, can be effective to the shaping of difficult shaping complex curved surface parts, the aluminum alloy curved part forming accuracy is effectively improved, eliminate the workpiece resilience, solved the problem of aluminum alloy curved part mould difficult design.
Description of drawings
Fig. 1 aluminum alloy curved part electromagnetic compound forming tooling drawing
Fig. 2 a is the electro-magnetic forming loop construction front view of label 3-1
Fig. 2 b is the electro-magnetic forming loop construction left view of label 3-1
Fig. 2 c is the electro-magnetic forming loop construction vertical view of label 3-1
Fig. 2 d is the electro-magnetic forming loop construction three-dimensional view of label 3-1
Fig. 3 is the form-wound coil outer casing construction drawing of label 3-3
Fig. 4 a is the shaping die front view of label 1
Fig. 4 b is the shaping die left view of label 1
Fig. 5 is the graph of a relation of thick aluminum alloy curved part springback capacity of 0.4mm and discharge energy
The graph of a relation of Fig. 6 aluminum alloy curved part thickness and optimal discharge energy
The part name 1-shaping die that number in the figure is represented; The 2-aluminum alloy slab; 3-coil punch; 3-1-electro-magnetic forming coil; The 3-2 insulating resin; 3-3-form-wound coil shell.
The specific embodiment
The experiment of embodiment 1 aluminum alloy curved part electromagnetic compound forming
Experiment material is 1060 aluminium sheets, and board dimension is 100mm * 150mm, and thickness is 0.4mm, 0.7mm and 0.9mm.On tooling drawing shown in Figure 1, carry out electromagnetic compound forming.
In the experiment, the phase I, coil punch 3 is pressed into aluminum alloy slab under the effect of forcing press and carries out preform in the shaping die 1, and keeps shaping coil case 3-3 well to contact with the aluminum alloy slab flange; Second stage is adjusted electromagnetic forming machine storage capacitor and discharge voltage parameter, and discharge is shaped to aluminum alloy slab under different discharge energies.The forming Analysis workpiece takes out the springback capacity behind the die, and the poor of shaping rear curved surface part small end face subtended angle value and standard design value measured in resilience.
0.4mm the pass of discharge energy and springback capacity is shown in Figure 5 during thick aluminum alloy plate materials electromagnetic compound forming.As seen from the figure, along with the increase of discharge energy, springback capacity is more and more littler, and the two is almost linear.Corresponding a discharge energy value, i.e. optimal discharge energy when springback capacity is zero.
The relation of thickness and optimal discharge energy is plotted as Fig. 6 during the aluminum alloy plate materials electromagnetic compound forming.As seen from the figure, the optimal discharge energy increases with the increase of sheet thickness.
When material thickness was 0.2～1.0mm, optimal discharge energy value scope was 3～10KJ; When material thickness was 1.0～3.0mm, optimal discharge energy range value was 10～40KJ.
The experimental result explanation by the choose reasonable discharge energy, can be eliminated the resilience of aluminum alloy curved part; Can effectively improve the forming accuracy of aluminum alloy part by the aluminium alloy electromagnetic combined forming process, solve the problem of the mould difficult design that resilience brings.
Claims (8)
1, aluminum alloy curved part electromagnetic compound forming method is characterized in that, the manufacturing process step is as follows:
(1) aluminum alloy slab is placed on the shaping die (1);
(2) storage capacitor to electro-magnetic forming equipment charges, and after charging voltage reaches shaping voltage, disconnects charge circuit;
(3) under the effect of forcing press, coil punch (3) is pressed into aluminum alloy slab in the shaping die (1) and carries out preform, and keeps shaping coil case (3-3) well to contact with the aluminum alloy slab flange;
(4) closed electromagnetic shaping discharge loop, to electro-magnetic forming coil (3-1) discharge, the preform aluminum alloy curved part pastes mould at a high speed to storage capacitor under the effect of electromagnetic force, promptly obtain required workpiece by cable.
2, according to the described aluminum alloy curved part electromagnetic compound forming method of claim 1, it is characterized in that: described aluminum alloy slab thickness is 0.2～3.0mm.
3, according to the described aluminum alloy curved part electromagnetic compound forming method of claim 1, it is characterized in that: described shaping voltage is set according to required discharge energy, and the shaping voltage range is 3～20KV; Required discharge energy is: when aluminum alloy slab thickness was 0.2～1.0mm, discharge energy value scope was 3～40KJ; When aluminum alloy slab thickness was 1.0～3.0mm, the discharge energy value range was 10～200KJ.
4, according to the described aluminum alloy curved part electromagnetic compound forming method of claim 1, it is characterized in that: shaping die (1) is fixed on the press bench face, and coil punch (3) is fixed on the forcing press top shoe; Starting stage, the forcing press top shoe is descending, and coil punch (3) is pressed into preform in the shaping die with aluminum alloy slab, and makes form-wound coil shell (3-3) compress the slab flange; By electro-magnetic forming equipment the electro-magnetic forming coil discharge is shaped then and obtains workpiece.
5, according to the described aluminum alloy curved part electromagnetic compound forming method of claim 1, it is characterized in that: in the forming process, being about to aluminum alloy slab under the forcing press top shoe is pressed in the shaping die process, the storage capacitor of electro-magnetic forming equipment is finished charging synchronously, and i.e. discharge was shaped and obtains workpiece after the preform process finished.
6, a kind of device according to the described aluminum alloy curved part electromagnetic compound forming method of claim 1, comprise: coil punch (3) and shaping die (1), wherein, coil punch (3) adopts high strength insulating resins (3-2) to be cured as one by electro-magnetic forming coil (3-1) and form-wound coil shell (3-3) two parts to form.
7, according to the device of the described aluminum alloy curved part electromagnetic compound forming method of claim 6, it is characterized in that: coil punch (3) enveloping surface is the equidistant surface of aluminum alloy curved part profile, and material of translation is thick, the profile enveloping surface of electro-magnetic forming coil 3-1 is the equidistant surface of coil punch profile, and insulating barrier distance of translation.
8, according to the device of the described aluminum alloy curved part electromagnetic compound forming method of claim 6, it is characterized in that: shaping die (1) is pressed the design of aluminum alloy curved part appearance and size, need not to consider springback factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100631281A CN101607286A (en) | 2009-07-13 | 2009-07-13 | Aluminum alloy curved part electromagnetic compound forming method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100631281A CN101607286A (en) | 2009-07-13 | 2009-07-13 | Aluminum alloy curved part electromagnetic compound forming method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101607286A true CN101607286A (en) | 2009-12-23 |
Family
ID=41481282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100631281A Pending CN101607286A (en) | 2009-07-13 | 2009-07-13 | Aluminum alloy curved part electromagnetic compound forming method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101607286A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341546A (en) * | 2013-07-15 | 2013-10-09 | 哈尔滨工业大学 | Device and method for forming light alloy shell formed part through magnetic pulses |
| CN103394577A (en) * | 2013-08-15 | 2013-11-20 | 西北有色金属研究院 | Forming method of titanium alloy thin-walled casing |
| CN104985044A (en) * | 2015-06-12 | 2015-10-21 | 哈尔滨工业大学 | Method of gradually forming thin-wall part by adopting strong magnetism |
| CN106807824A (en) * | 2017-03-23 | 2017-06-09 | 华中科技大学 | A kind of device of even pressure electromagnetic device shaping, uniform press coil and its acquisition methods |
| CN107030173A (en) * | 2017-06-19 | 2017-08-11 | 中南大学 | A kind of sheet bending device and method |
| CN107138591A (en) * | 2017-06-19 | 2017-09-08 | 中南大学 | A kind of electromagnetic forming device and manufacturing process of cylindrical member fillet |
| CN109848298A (en) * | 2019-03-13 | 2019-06-07 | 中南大学 | A kind of the subregion electromagnetic compound forming method and forming device of large size integral panel |
| CN110560547A (en) * | 2019-08-14 | 2019-12-13 | 武汉理工大学 | metal plate uniform-pressure electromagnetic forming device and method under action of anisotropic current |
| CN110666018A (en) * | 2019-09-19 | 2020-01-10 | 武汉理工大学 | Coil-free electromagnetic composite forming device and forming method |
| CN112658085A (en) * | 2020-12-22 | 2021-04-16 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Forming method of battery liquid cooling plate |
| CN113020773A (en) * | 2021-03-25 | 2021-06-25 | 武汉理工大学 | Multilayer plate composite forming welding processing method based on magnetic pulse |
-
2009
- 2009-07-13 CN CNA2009100631281A patent/CN101607286A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341546A (en) * | 2013-07-15 | 2013-10-09 | 哈尔滨工业大学 | Device and method for forming light alloy shell formed part through magnetic pulses |
| CN103394577A (en) * | 2013-08-15 | 2013-11-20 | 西北有色金属研究院 | Forming method of titanium alloy thin-walled casing |
| CN104985044A (en) * | 2015-06-12 | 2015-10-21 | 哈尔滨工业大学 | Method of gradually forming thin-wall part by adopting strong magnetism |
| CN106807824B (en) * | 2017-03-23 | 2018-05-22 | 华中科技大学 | A kind of device, uniform press coil and its acquisition methods of even pressure electromagnetic device shaping |
| CN106807824A (en) * | 2017-03-23 | 2017-06-09 | 华中科技大学 | A kind of device of even pressure electromagnetic device shaping, uniform press coil and its acquisition methods |
| CN107030173A (en) * | 2017-06-19 | 2017-08-11 | 中南大学 | A kind of sheet bending device and method |
| CN107138591A (en) * | 2017-06-19 | 2017-09-08 | 中南大学 | A kind of electromagnetic forming device and manufacturing process of cylindrical member fillet |
| CN107138591B (en) * | 2017-06-19 | 2020-01-10 | 中南大学 | Electromagnetic forming device and method for cylindrical part fillet |
| CN109848298A (en) * | 2019-03-13 | 2019-06-07 | 中南大学 | A kind of the subregion electromagnetic compound forming method and forming device of large size integral panel |
| CN110560547A (en) * | 2019-08-14 | 2019-12-13 | 武汉理工大学 | metal plate uniform-pressure electromagnetic forming device and method under action of anisotropic current |
| CN110666018A (en) * | 2019-09-19 | 2020-01-10 | 武汉理工大学 | Coil-free electromagnetic composite forming device and forming method |
| CN110666018B (en) * | 2019-09-19 | 2020-10-13 | 武汉理工大学 | Coil-free electromagnetic composite forming device and forming method |
| CN112658085A (en) * | 2020-12-22 | 2021-04-16 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Forming method of battery liquid cooling plate |
| CN113020773A (en) * | 2021-03-25 | 2021-06-25 | 武汉理工大学 | Multilayer plate composite forming welding processing method based on magnetic pulse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101607286A (en) | Aluminum alloy curved part electromagnetic compound forming method and device | |
| CN2887479Y (en) | Moving electromagnetic coil device for gradual panel forming | |
| CN103586325B (en) | A kind of deep drawing quality component electromagnetic forming method | |
| CN103341546B (en) | Device and method for forming light alloy shell formed part through magnetic pulses | |
| CN111036755B (en) | Metal plate forming device and method for driving energetic material by high-energy electric pulse | |
| CN103394577A (en) | Forming method of titanium alloy thin-walled casing | |
| CN107138591B (en) | Electromagnetic forming device and method for cylindrical part fillet | |
| CN101905268B (en) | Small hydrogen fuel battery metal bi-polar plate forming mould | |
| CN110102608B (en) | Forming device and method for high-precision U-shaped bending of sheet material | |
| CN102172689B (en) | Electroplastic bending device for light metal section | |
| CN109590405B (en) | Aluminum alloy battery box composite forming device | |
| CN204262135U (en) | A kind of sheet metal electromagnetic pulse local flow progressive molding device | |
| CN104475531B (en) | A kind of sheet metal electromagnetic pulse local flow progressive molding device and method | |
| CN204503910U (en) | Aluminium alloy cylindrical member magnetic field impulse assists drawing and forming device | |
| CN103480751B (en) | Increment forming device and method for performing increment forming by utilizing increment forming device | |
| CN103464564A (en) | Electromagnetic forming device and forming method for aluminum alloy rib plate | |
| CN111451353A (en) | Electromagnetic forming device for forming fluid impact plate and forming method thereof | |
| CN207266988U (en) | A kind of electromagnetic forming device of metal sheet | |
| CN111604402A (en) | Aluminum alloy sheet precise shaping method and device based on electro-hydraulic forming | |
| CN102941253A (en) | Component assembly method and device based on electromagnetic auxiliary forming | |
| CN108057769A (en) | Method of the punching press part rebound complex-curved with magnetic pulse formation Collaborative Control with rupture | |
| CN110666018B (en) | Coil-free electromagnetic composite forming device and forming method | |
| CN108555128B (en) | A kind of coupling of multi-coil without mould electromagnetism progressive molding method | |
| Fan et al. | Electromagnetic pulse-assisted incremental drawing forming of aluminum alloy cylindrical part and its control strategy | |
| CN2136082Y (en) | Metal workpiece shaper operated by electromagnetic force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091223 |