CN103191971A - Electromagnetism-assisted forming device and method for dissimilar metal composite boards - Google Patents
Electromagnetism-assisted forming device and method for dissimilar metal composite boards Download PDFInfo
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- CN103191971A CN103191971A CN2013101109064A CN201310110906A CN103191971A CN 103191971 A CN103191971 A CN 103191971A CN 2013101109064 A CN2013101109064 A CN 2013101109064A CN 201310110906 A CN201310110906 A CN 201310110906A CN 103191971 A CN103191971 A CN 103191971A
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Abstract
The invention relates to an electromagnetism-assisted forming device and method for dissimilar metal composite boards and aims to solve the problem that existing metal composite boards are severely lapped and even broken in a drawing process. According to the forming device, a coil is arranged in an annular coil groove, a liquid channel is disposed between the inner wall of a blank holder and a cylinder, an upper liquid inlet channel is transversely arranged on the side wall of the blank holder, and a lower liquid inlet channel is transversely arranged on the side wall of a female die. The method includes placing the composite boards on the bottom surface of the blank holder; filling forward liquids into the liquid channel, filling reverse liquids into the female die, and exerting radial electromagnetic force Fd on the periphery of a flange of the composite board through the coil; forming the composite board under the combined action of a reverse pressure Fp2, a forward pressure Fp1 and the radial electromagnetic force Fd; and unloading a forward liquid pressure P1 and then a reverse liquid pressure P2, returning a male die and taking the formed part.
Description
Technical field
The present invention relates to the device and method that a kind of composite board is shaped, be specifically related to a kind of auxiliary manufacturing process that improves the dissimilar metal clad plate forming limit of electromagnetism of using.
Background technology
Along with the appearance of the development of modern industrial technology and various new technology, new industry, people increase day by day to the requirement of material property, and under some specific condition, the performance of single group element material has been difficult to satisfy instructions for use.By various method of attachment with single metal material compound be one, be prepared into composite metal plate, laminated composite plate after the combination of this process appropriate design combines different metal constituent element advantage separately, physics, chemical property and mechanical characteristic that the single-layer metal material is not had have been obtained, satisfy performance demands such as high strength, high specific stiffness, fatigue resistance, dimensionally stable, wear-resisting, antivibration, save rare precious materials simultaneously, reduced production cost.Because composite plate has good comprehensive performances and superior cost performance, all pay much attention to its research and development both at home and abroad.Aspect kind, according to different material military service conditions, developed titanium series, stainless steel series, aluminium series, copper series composite plate etc., aspect forming technology, then studied as methods such as blast composite algorithm, roll-bonding method, diffusion connection method, liquid-solid phase composite algorithms.The appearance of advanced methods such as liquid phase composite algorithm, semisolid pressure composite algorithm, make in enormous quantities, composite metal plate is produced in serialization becomes possibility, reduced the manufacturing cost of composite plate, and has very high cost performance.Thus, the manufacturing process of composite metal plate becomes the material processing field research focus.The shaping of composite metal plate is shaped much complicated than the single metal plate material, it not only needs to consider the related process factor that is shaped, also will consider plasticity performance and the compatibility of deformation ability of each constituent element of metal blank.Can cause in forming process that up and down the two-ply distortion is inharmonious, be easy to generate the changing of the relative positions and wrinkling, its compacting mechanism is more than the lamina complexity.
Traditional sheet metal hydroforming is that the lower surface at the shaping plate applies fluid pressure, makes the blank punch that reclines under the fluid pressure effect, realizes the shaping of sheet metal part, as shown in Figure 2.Cause the problem that punch-nose angle is broken and too high buffer brake causes suspension area to break easily for crossing low buffer brake in the forming processes such as solution Tapered Cup and ball bottomless drum shape spare, adopted forward and reverse pressurization hydro-mechanical drawing method, upper surface at the shaping blank also applies the hydro-mechanical drawing that hydraulic pressure cooperates the bottom, forms the two-sided pressurization compound forming that adds.The positive pressure of upper surface can be partly even is all offset anti-bloated that the bottom buffer brake causes, and allows to apply bigger buffer brake and suppresses attenuate, improves forming limit.Though but the existence of positive pressure can improve the numerical value of buffer brake, also reduced the effect of the useful frictional force between plate and punch simultaneously, its positive reaction is cancelled out each other, and therefore two-way pressurization is limited for the effect that improves plate Limit Drawing ratio.
Traditional radial load applying method as shown in Figure 3, is liquid chamber pressure to be guided to blank flange outer rim realize that radial loaded, radial pressure equate with liquid chamber pressure, and can not independent regulation.Compare and apply the method for radial hydraulic pressure by hydraulic system, use the magnetic pulse formation device, more simple efficient, be easy to control, and save cost and place.
Summary of the invention
The objective of the invention is for solving the forming limit that occurs in the existing metallic composite panel drawing and forming process low, cause sheet material attenuate in forming process and to provide a kind of dissimilar metal clad plate material electromagnetism assist formation devices and methods therefor seriously until the problem of breaking.
Of the present invention being achieved through the following technical solutions:
Device: described device comprises punch, blank holder, sealing ring, coil and die, the upper surface of described die is provided with matrix cavity and flanging ring recess from inside to outside, the bottom surface of flanging ring recess is provided with the toroid ring recess, coil is arranged in the toroid ring recess, the madial wall of blank holder is provided with the ring packing ring recess, the drift of punch is round platform, the afterbody of punch is cylinder, blank holder is sleeved on the cylinder, and be provided with fluid passage between the inwall of blank holder and the cylinder, ring set is on cylinder and be arranged in the ring packing ring recess, laterally be provided with liquid inlet channel on the sidewall of blank holder, laterally be provided with down liquid inlet channel on the sidewall of die, punch and blank holder are positioned at the top of die, and punch and matrix cavity over against, blank holder and flanging ring recess over against.
Method: described method realizes by following steps:
Step 1, compound plate is placed on the bottom surface of flanging ring recess, blank holder is displaced downwardly to the lower surface of blank holder apart from the upper surface 0.5mm～2mm place of compound plate, and blank holder is applied pressure-pad-force F
BHBe 5kN～200kN;
Step 2, punch move down into the upper surface of compound plate, apply forward liquid by last liquid inlet channel in fluid passage, its forward fluid pressure P simultaneously
1Be 2MPa～50MPa, in matrix cavity, apply reversed liquid, its reversed liquid pressure P by following liquid inlet channel
2Should be greater than 1.5 times of forward fluid pressure P
1, less than 100MPa, by coil the flange outer rim of compound plate is applied radial electromagnetic force F then
dBe 10MPa～100Mpa;
Step 3, compound plate are at buffer brake Fp
2, positive pressure Fp
1, radial electromagnetic force F
dBe shaped under the synergy, when punch reaches stroke after making compound sheet forming, namely finish part forming;
After step 4, the end that is shaped, unload forward fluid pressure P earlier
1, unload the reversed liquid pressure P again
2, formation of parts is taken out in the punch backhaul, namely finishes a forming process.
The present invention has following beneficial effect:
One, utilize device of the present invention to finish dissimilar metal clad plate material electromagnetism assist formation method, this method is that the upper and lower surface at plate all applies on the basis of hydraulic pressure, by coil the flange outer rim of compound plate is discharged to realize again, can carry out active control in real time according to loading curve, make the coupling of radial electromagnetic force and positive and negative hydraulic coupling, the flange outer rim that radial pressure promotes plate flows downward, participate in the positive distortion of punch bottom plate, deep-drawing deformation is easier to carry out thereby make, realization is tending towards uniform Strain Distribution, thereby improve the forming property of sheet material to greatest extent, be particularly useful for the dissimilar metal clad plate material.Method of the present invention has reduced the radially tension of deformed area, has avoided the generation of breaking, and forms the dual-face fluid lubricant effect, makes sheet material be in preferably deformation state and has improved its formability.The coupling of bidirection press and radial load has postponed the traction distortion of composite plate and the formation of interior void and has grown up, and has improved its forming limit.Apply radial electromagnetic force in the flange outer rim, along with the increase of radial load, the radially tension in blank deformation district reduces, circumferential compressive force increases, and is conducive to flowing, being out of shape of blank, has avoided serious attenuate.
Two, the present invention can postpone the traction distortion of composite board and the viscous effect at interface, upper and lower surface in composite plate forms pressure reduction, reduced the radially tension of deformed area, avoided the generation of breaking, and form the dual-face fluid lubricant effect, improved the forming limit of composite plate and the uniformity of drip molding Thickness Distribution.And because the raising of buffer brake makes the subsides mould of composite board member, shape stability good, hydraulic pressure unloading back resilience is little, the dimensional accuracy height.
Three, the traditional relatively manufacturing process of the Thickness Distribution of the formed parts of the inventive method is more even.Therefore this method can remedy the deficiency of material forming aspect of performance, saves operation, raises the efficiency, and provides new approach for the high accuracy of dissimilar metal clad plate member is shaped.
Description of drawings
Fig. 1 is structure master's cutaway view of the specific embodiment one, and Fig. 2 is the principle schematic of traditional liquid filling deep-drawing forming, and Fig. 3 is the schematic diagram of traditional radial load applying method.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment comprises punch 1, blank holder 2, sealing ring 3, coil 4 and die 5, the upper surface of described die 5 is provided with matrix cavity 5-1 and flanging ring recess 5-2 from inside to outside, the bottom surface of flanging ring recess 5-2 is provided with toroid ring recess 5-2-1, coil 4 is arranged among the toroid ring recess 5-2-1, the madial wall of blank holder 2 is provided with ring packing ring recess 2-2, the drift of punch 1 is round platform 1-1, the afterbody of punch 1 is cylinder 1-2, blank holder 2 is sleeved on the cylinder 1-2, and be provided with fluid passage 6 between the inwall of blank holder 2 and the cylinder 1-2, sealing ring 3 is sleeved on cylinder 1-2 and goes up and be arranged among the ring packing ring recess 3-1, laterally be provided with liquid inlet channel 2-1 on the sidewall of blank holder 2, laterally be provided with down liquid inlet channel 5-3 on the sidewall of die 5, punch 1 and blank holder 2 are positioned at the top of die 5, and punch 1 and matrix cavity 5-1 over against, blank holder 2 and flanging ring recess 5-2 over against.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, the last liquid inlet channel 2-1 of present embodiment and following fluid passage 6-1 are upper and lower over against setting.Other annexation is identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, present embodiment realizes by following steps:
Step 1, compound plate 7 is placed on the bottom surface of flanging ring recess 5-2, blank holder 2 is displaced downwardly to the lower surface of blank holder 2 apart from the upper surface 0.5mm～2mm place of compound plate 7, and blank holder 2 is applied pressure-pad-force F
BHBe 5kN～200kN;
Step 2, punch 1 move down into the upper surface of compound plate 7, apply forward liquid by last liquid inlet channel 2-1 in fluid passage 6, its forward fluid pressure P simultaneously
1Be 2MPa～50MPa, in matrix cavity 5-1, apply reversed liquid, its reversed liquid pressure P by following liquid inlet channel 5-3
2Should be greater than 1.5 times of forward fluid pressure P
1, (be 100MPa 〉=P less than 100MPa
2〉=P
1), the flange outer rim by 4 pairs of compound plates 7 of coil applies radial electromagnetic force F then
dBe 10MPa～100Mpa; Electro-magnetic forming is to utilize the high-voltage pulse magnetic field of moment that product is carried out indirectly or the two-forty forming technology of directly processing, because its energy is easy to control, can realize easily that real time high-speed is shaped, and can realize the control of various technological parameters and forming process easily.
Step 3, compound plate 7 are at buffer brake Fp
2, positive pressure Fp
1, radial electromagnetic force F
dBe shaped under the synergy, when punch 1 reaches the stroke that makes after compound plate 7 is shaped, namely finish part forming;
In the forming process, according to shape and the material behavior of formation of parts, can adjust forward fluid pressure P
1, the reversed liquid pressure P
2With radial electromagnetic force F
dNumerical values recited, to form different positive pressure Fp
1, buffer brake Fp
2With radial electromagnetic force F
dCombination; Adjust forward fluid pressure P
1, the reversed liquid pressure P
2With radial electromagnetic force F
dThe purpose of numerical value is in order to obtain optimum process parameters combination, i.e. forward fluid pressure P
1, the reversed liquid pressure P
2With radial electromagnetic force F
dBetween best matching relationship, for example: be the composite board that 5A06 aluminium alloy and No. 20 steel are formed for material, when being configured as cylindrical component, best parameter combinations is forward fluid pressure P
1=20MPa, reversed liquid pressure P
2=40MPa, radial electromagnetic force F
d=25MPa, the reduction minimum of the part wall thickness after being shaped under this parameter combinations.
After step 4, the end that is shaped, unload forward fluid pressure P earlier
1, unload the reversed liquid pressure P again
2, formation of parts is taken out in punch 1 backhaul, namely finishes a forming process.
Radial electromagnetic force F
dTo apply be that coil 4 discharge by being embedded in the die realizes, can carry out active according to loading curve and control in real time, make radial electromagnetic force F
dReach optimum Match with positive counter-pressure, radial electromagnetic force F
dThe flange outer rim that promotes compound plate 7 flows downward, participate in the positive distortion of the compound plate 7 in punch bottom, deep-drawing deformation is easier to carry out thereby make, and realizes being tending towards uniform Strain Distribution, thereby improve the forming property of sheet material to greatest extent, be particularly useful for the dissimilar metal clad plate material.
The specific embodiment four: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the material of the compound plate 7 in the step 1 is mild steel, aluminium alloy, fine aluminium, stainless steel, copper alloy, titanium alloy or magnesium alloy.Other steps are identical with the specific embodiment three.
The specific embodiment five: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the thickness of the compound plate 7 in the step 1 is 1.0mm～4.0mm.Other steps are identical with the specific embodiment three or four.
The specific embodiment six: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the thickness of the compound plate 7 in the step 1 is 2.0mm.Other steps are identical with the specific embodiment five.
The specific embodiment seven: in conjunction with Fig. 1 present embodiment is described, present embodiment is that the thickness of the compound plate 7 in the step 1 is 3.0mm.Other steps are identical with the specific embodiment five.
The specific embodiment eight: in conjunction with Fig. 1 present embodiment is described, present embodiment is to apply forward fluid pressure P by last liquid inlet channel 2-1 in fluid passage 6 in the step 2
1Be 20MPa, in matrix cavity 5-1, apply the reversed liquid pressure P by following liquid inlet channel 5-3
2Be 30MPa, the flange outer rim by 4 pairs of compound plates 7 of coil applies radial electromagnetic force F
dBe 50Mpa.Other steps are identical with the specific embodiment three.
The specific embodiment nine: in conjunction with Fig. 1 present embodiment is described, present embodiment is to apply forward fluid pressure P by last liquid inlet channel 2-1 in fluid passage 6 in the step 2
1Be 30MPa, in matrix cavity 5-1, apply the reversed liquid pressure P by following liquid inlet channel 5-3
2Be 45MPa, the flange outer rim by 4 pairs of compound plates 7 of coil applies radial electromagnetic force F
dBe 60Mpa.Other steps are identical with the specific embodiment three.
The specific embodiment ten: in conjunction with Fig. 1 present embodiment is described, present embodiment is in the forming process in the step 3, and sealing ring 3 should guarantee the sealing of upper cavity when punch 1 is descending.Other steps are identical with the specific embodiment three.
Claims (10)
1. dissimilar metal clad plate material electromagnetism assist formation device, it is characterized in that: described device comprises punch (1), blank holder (2), sealing ring (3), coil (4) and die (5), the upper surface of described die (5) is provided with matrix cavity (5-1) and flanging ring recess (5-2) from inside to outside, the bottom surface of flanging ring recess (5-2) is provided with toroid ring recess (5-2-1), coil (4) is arranged in the toroid ring recess (5-2-1), the madial wall of blank holder (2) is provided with ring packing ring recess (2-2), the drift of punch (1) is round platform (1-1), the afterbody of punch (1) is cylinder (1-2), blank holder (2) is sleeved on the cylinder (1-2), and be provided with fluid passage (6) between the inwall of blank holder (2) and the cylinder (1-2), sealing ring (3) is sleeved on cylinder (1-2) and goes up and be arranged in the ring packing ring recess (3-1), laterally be provided with liquid inlet channel (2-1) on the sidewall of blank holder (2), laterally be provided with down liquid inlet channel (5-3) on the sidewall of die (5), punch (1) and blank holder (2) are positioned at the top of die (5), and punch (1) and matrix cavity (5-1) over against, blank holder (2) and flanging ring recess (5-2) over against.
2. according to the described dissimilar metal clad plate material of claim 1 electromagnetism assist formation device, it is characterized in that: it is upper and lower over against setting with following fluid passage (6-1) to go up liquid inlet channel (2-1).
3. one kind is utilized the described device of claim 1 to realize dissimilar metal clad plate material electromagnetism assist formation method, and it is characterized in that: described method realizes by following steps:
Step 1, compound plate (7) is placed on the bottom surface of flanging ring recess (5-2), blank holder (2) is displaced downwardly to the lower surface of blank holder (2) apart from the upper surface 0.5mm～2mm place of compound plate (7), and it is 5kN～200kN that blank holder (2) is applied pressure-pad-force FBH;
Step 2, punch (1) move down into the upper surface of compound plate (7), simultaneously in fluid passage (6), apply forward liquid by last liquid inlet channel (2-1), its forward fluid pressure P1 is 2MPa～50MPa, in matrix cavity (5-1), apply reversed liquid by following liquid inlet channel (5-3), its reversed liquid pressure P 2 should be greater than 1.5 times of forward fluid pressure P1, less than 100MPa, and by coil (4) the flange outer rim of compound plate (7) being applied radial electromagnetic force Fd then is 10MPa～100Mpa;
Step 3, compound plate (7) are shaped under buffer brake Fp2, positive pressure Fp1, radial electromagnetic force Fd synergy, when punch (1) reaches the stroke that makes after compound plate (7) is shaped, namely finish part forming;
After step 4, the end that is shaped, unload forward fluid pressure P1 earlier, unload reversed liquid pressure P 2 again, formation of parts is taken out in punch (1) backhaul, namely finishes a forming process.
4. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: the material of the compound plate (7) in the described step 1 is mild steel, aluminium alloy, fine aluminium, stainless steel, copper alloy, titanium alloy or magnesium alloy.
5. according to claim 3 or 4 described dissimilar metal clad plate material electromagnetism assist formation methods, it is characterized in that: the thickness of the compound plate (7) in the described step 1 is 1.0mm～4.0mm.
6. according to the described dissimilar metal clad plate material of claim 5 electromagnetism assist formation method, it is characterized in that: the thickness of the compound plate (7) in the described step 1 is 2.0mm.
7. according to the described dissimilar metal clad plate material of claim 5 electromagnetism assist formation method, it is characterized in that: the thickness of the compound plate (7) in the described step 1 is 3.0mm.
8. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: applying forward fluid pressure P1 by last liquid inlet channel (2-1) in the fluid passage (6) in the described step 2 is 20MPa, apply reversed liquid pressure P 2 by following liquid inlet channel (5-3) in the matrix cavity (5-1) and be 30MPa, by coil (4) the flange outer rim of compound plate (7) being applied radial electromagnetic force Fd is 50Mpa.
9. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: applying forward fluid pressure P1 by last liquid inlet channel (2-1) in the fluid passage (6) in the described step 2 is 30MPa, apply reversed liquid pressure P 2 by following liquid inlet channel (5-3) in the matrix cavity (5-1) and be 45MPa, by coil (4) the flange outer rim of compound plate (7) being applied radial electromagnetic force Fd is 60Mpa.
10. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: in the forming process in the described step 3, sealing ring (3) should guarantee the sealing of upper cavity when punch (1) is descending.
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|---|---|---|---|
| CN2013101109064A CN103191971A (en) | 2013-04-01 | 2013-04-01 | Electromagnetism-assisted forming device and method for dissimilar metal composite boards |
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Cited By (12)
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| CN103658297A (en) * | 2013-09-13 | 2014-03-26 | 华中科技大学 | Electromagnetic pulse boosting type gradual deep drawing forming method and device |
| CN103817197A (en) * | 2014-03-11 | 2014-05-28 | 华中科技大学 | Electromagnetic molding device and method |
| CN103894468A (en) * | 2014-04-02 | 2014-07-02 | 华中科技大学 | Material fluidity control method for metal plate forming |
| CN104874662A (en) * | 2015-04-29 | 2015-09-02 | 哈尔滨理工大学 | Magnetic medium damping type special-shaped plate forming device and magnetic medium damping type special-shaped plate forming method |
| CN105598250A (en) * | 2016-03-18 | 2016-05-25 | 西北工业大学 | Magnetic pulse local loading forming device and method for skin panel |
| CN106270094A (en) * | 2015-06-26 | 2017-01-04 | 中航空天发动机研究院有限公司 | A kind of " M " shape metal is obturaged the single pass integral forming device of ring |
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| CN110177632A (en) * | 2017-01-18 | 2019-08-27 | Adm28责任有限公司 | For passing through the device of magnetic forming punching press and associated method |
| CN111299395A (en) * | 2019-11-28 | 2020-06-19 | 哈尔滨理工大学 | Magnetic medium auxiliary plate blanking forming device and method |
| CN112453168A (en) * | 2020-09-21 | 2021-03-09 | 燕山大学 | Electromagnetically-driven soft male die hydro-mechanical deep drawing forming device and process method |
| CN112453167A (en) * | 2020-09-21 | 2021-03-09 | 燕山大学 | Electromagnetically-driven hydromechanical deep drawing forming device and process method for soft female die |
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| CN110177632B (en) * | 2017-01-18 | 2021-10-08 | Adm28责任有限公司 | Device for stamping by magnetic forming and associated method |
| CN109834151A (en) * | 2019-03-13 | 2019-06-04 | 中南大学 | A kind of the differential temperature electromagnetic forming method and forming device of plate micropore flange |
| CN111299395A (en) * | 2019-11-28 | 2020-06-19 | 哈尔滨理工大学 | Magnetic medium auxiliary plate blanking forming device and method |
| CN112453168A (en) * | 2020-09-21 | 2021-03-09 | 燕山大学 | Electromagnetically-driven soft male die hydro-mechanical deep drawing forming device and process method |
| CN112453167A (en) * | 2020-09-21 | 2021-03-09 | 燕山大学 | Electromagnetically-driven hydromechanical deep drawing forming device and process method for soft female die |
| CN112453168B (en) * | 2020-09-21 | 2021-11-05 | 燕山大学 | Electromagnetically-driven soft male die hydro-mechanical deep drawing forming device and process method |
| CN114918306A (en) * | 2022-05-27 | 2022-08-19 | 上海交通大学 | Injection-press forming method and apparatus for metal resin laminated structure |
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Application publication date: 20130710 |