CN206550190U - A kind of electromagnetism Deep forming device - Google Patents
A kind of electromagnetism Deep forming device Download PDFInfo
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- CN206550190U CN206550190U CN201720212174.3U CN201720212174U CN206550190U CN 206550190 U CN206550190 U CN 206550190U CN 201720212174 U CN201720212174 U CN 201720212174U CN 206550190 U CN206550190 U CN 206550190U
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Abstract
The utility model discloses a kind of electromagnetism Deep forming device, the device includes driving coil, fixed cell, forming punch, boosting coil, flanging unit and shaping dies, the second alternating magnetic field is produced by injecting the second pulse current into boosting coil, second alternating electromagnetic field produces boosting pulse-electromagnetic force in plate to be formed, the boosting pulse electromagnetic axial force decomposed by boosting pulse-electromagnetic force is used to provide pressure-pad-force for plate to be formed, material in plate to be formed is contributed to be flowed into shaping dies from the boosting pulse electromagnetic radial load that boosting pulse-electromagnetic force is decomposed.During the second pulse current, the first alternating magnetic field is produced by injecting the first pulse current into driving coil, first alternating magnetic field inductive loop in forming punch, driving forming punch is moved downward, act on plate to be formed, now the mobility of plate to be formed is high, it is possible to increase forming property, acting on plate to be formed by forming punch shapes it, it is possible to increase pad pasting performance.
Description
Technical field
The utility model belongs to metal forming manufacture field, more particularly, to a kind of electromagnetism Deep forming device.
Background technology
The high-strength light alloy material that the requirement of energy-conservation and environmental protection promotes aluminium alloy to be representative formerly enters manufacture field and obtained
To extensive use.But conventional forming techniques run into major obstacles, major embodiment in high-strength light alloy material processed and applied
For alloy in lightweight plasticity is poor, difficult shaping, a kind of new forming technique is needed badly.Research shows, when high-speed shapes, the shaping of material
Performance is significantly improved.Electro-magnetic forming is the Rapid Manufacturing Technology that a kind of utilization Lorentz force shapes metal material, is belonged to
High-speed shapes, and can be greatly enhanced the forming property of material.But when carrying out deep-draw type component forming, on the one hand, itself and biography
System quasistatic shaping faces the problem of workpiece is easily thinned, on the other hand, for complex part, work under electromagnetic forming technique
The patch mould of part has to be hoisted.
Utility model content
To solve, traditional quasistatic shaping alloy in lightweight plasticity is poor, easily tear, and patch mould is poor, technological requirement height is asked
Topic, the utility model proposes a kind of electromagnetism depth that can be taken into account lifting material drawing forming limit and improve plate forming accuracy
Building mortion.
To achieve the above object, the utility model provides a kind of electromagnetism Deep forming device, including：
Driving coil, the first variation magnetic field is produced when being passed through the first pulse current；
Fixed cell, above driving coil, Constraints driven coil；
Forming punch, below driving coil, is moved downward when by axial pulse-electromagnetic force, and by with treating into
Axial pulse-electromagnetic force is transferred on plate to be formed by the directly contact of shape plate；Axial pulse-electromagnetic force is by the first change magnetic
With producing after the first eddy current effect, the first vortex is by the generation of the first variation magnetic field；
Boosting coil, positioned at the top of plate flange region to be formed, the second change is produced when being passed through the second pulse current
Magnetizing field；Second variation magnetic field produces second eddy current on plate to be formed, is acted on by the second variation magnetic field with second eddy current
Boosting pulse-electromagnetic force is produced on plate to be formed, boosting pulse-electromagnetic force promotes plate flange region material to be formed to shaping
The inside cavity flowing of mould, and provide pressure-pad-force for plate flange region to be formed；
Flanging unit, above boosting coil, constrains boosting coil；
Shaping dies, positioned at plate lower surface to be formed, provided with cavity, is made to be formed by cavity and forming punch cooperation
Plate is machined to required shape；
And first pulse current width be less than the second pulse current width, the first pulse current triggering moment is later than the second arteries and veins
Rush the current trigger moment.
The electromagnetism Deep forming device that the utility model is provided, the first variation magnetic field produced by driving coil, driving shaping
Drift is quickly moved, and forming punch hits metal sheet shaping, the forming speed of workpiece is improved, due to the first pulse current width
Less than the second pulse current width, the first pulse current triggering moment is later than the second pulse current triggering moment, in each axle
During hitting plate shaping to be formed to pulse-electromagnetic force driving forming punch, all deposited in the flange region of plate to be formed
In boosting pulse-electromagnetic force, promote material flowability, effectively reduce plate to be formed in forming process because material is thinned
Plate to be formed is caused to tear.Hit plate to be formed by forming punch simultaneously to shape, the pad pasting that can be protected in forming process.
Therefore, the electromagnetism Deep forming device that the utility model is provided can take into account lifting material drawing forming limit and improve plate shaping
Precision.
Preferably, forming punch includes：
Driving plate, below driving coil, induces the first vortex, the first change magnetic after by the first variation magnetic field
Field produces axial pulse-electromagnetic force with the first eddy current effect, drives driving plate to move downward by axial pulse-electromagnetic force；And
Hollow punch, is fixedly connected with driving plate, is moved downward jointly with driving plate, and by direct with plate to be formed
Axial pulse-electromagnetic force is transferred on plate to be formed by contact.
Forming punch uses hollow-core construction, in the case where ensureing that drift profile is constant, mitigates the quality of drift, improves into
The speed that shape drift is moved downward, improves the forming property of plate to be formed.
Preferably, the external diameter of boosting coil is more than the diameter of plate to be formed, and boost line circuit covering plate to be formed
Flange region.
Preferably, boosting coil includes multiple boosting subcoils, and each boosting subcoil is loop configuration, multiple boosting
Coil nesting arrangement, and positioned at the top of plate flange region to be formed successively, and when plate member edge to be formed is marched to arbitrarily
During one boosting subcoil, the boosting subcoil is passed through pulse current.
Preferably, shaping dies bottom is provided with steam vent, balances the pressure of plate upper surface to be formed and lower surface.
Preferably, shaping dies is provided with boss, allows boosting coil not contacted directly with plate to be formed.
By the contemplated above technical scheme of the utility model, compared with prior art, following beneficial effect can be obtained
Really：
1st, using axial pulse-electromagnetic force drive forming punch, make forming punch sharp downward movement, by with it is to be formed
Plate directly contacts the axial pulse-electromagnetic force of transmission, effectively raises the shaping rate of plate, while with pulse-electromagnetic force
During driving the shaping of lightweight drift, boosting pulse-electromagnetic force is produced by boosting coil, promotes material to mould inside stream
It is dynamic, shaped portion can be allowed to have material filling, and traditional quasistatic is stamping is compared, the shaping pole of material can be significantly improved
Limit.Meanwhile, high speed stamping is carried out using forming punch and shaping dies, compared with existing electromagnetic forming technique, can significantly be changed
Kind patch mould, improves electromagnetic energy rate, effective reduction workpiece resilience, improves forming accuracy.
2nd, pressure is provided above driving coil by fixed cell, it is ensured that in the first power subsystem discharge process, treat into
When shape plate is deformed to bottom offset, because of forming punch striking work device will not be caused to vibrate, and cause flanging unit
Falling causes damage equipment.
3rd, the external diameter of boosting coil is more than the diameter of workpiece to be formed, it is ensured that boosting coil treats forming panels flange
The overall trend of domain radial forces is the inside cavity to shaping dies, while boost line circuit covering flange region, Ke Yiwei
Whole plate flange region to be formed provides uniform boosting pulse electromagnetic radial load.
4th, pressure between plate and shaping dies to be formed in steam vent control forming process, makes plate to be formed will not be because
For upper surface with lower surface pressure is excessive causes the deformation of plate.
Brief description of the drawings
The structural representation of the first embodiment for the electromagnetism Deep forming device that Fig. 1 provides for the utility model；
Boosting coil exists in first embodiment, second embodiment and 3rd embodiment that Fig. 2 provides for the utility model
The flange region of plate to be formed produces the schematic diagram of second eddy current and pulse-electromagnetic force；
Boosting coil is put in first embodiment, second embodiment and 3rd embodiment that Fig. 3 provides for the utility model
The time diagram of discharge current in electric current and driving coil；
The structural representation of the second embodiment for the electromagnetism Deep forming device that Fig. 4 provides for the utility model；
The line of multiple boosting subcoils in the second embodiment for the electromagnetism Deep forming device that Fig. 5 provides for the utility model
Schematic diagram；
The work of multiple boosting subcoils in the second embodiment for the electromagnetism Deep forming device that Fig. 6 provides for the utility model
Schematic diagram, wherein, (a) is outermost layer coil operating diagram, and (b) is time outer coil operating diagram, and (c) is middle layer line
Enclose operating diagram, (d) innermost layer coil working schematic diagram；
The structural representation of the 3rd embodiment for the electromagnetism Deep forming device that Fig. 7 provides for the utility model；Each portion in figure
Divide label declaration：1：Driving coil, 2：Forming punch, 2-1：Driving plate, 2-2：Hollow punch, 3：Fixed cell, 4：Flanging list
Member, 5：Boosting coil, 6：Plate to be formed, 7：Shaping dies, 8：Steam vent, 9：Power subsystem, 10-1：Second pulse current,
10-2：Second eddy current direction, 11-1：Boosting pulse radial electromagnetic force, 11-2：Boosting pulse axial electromagnetic force, 12-1：Second arteries and veins
Rush current waveform, 12-2：First pulse current waveform.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
It is corresponding attached in some embodiments to ensure the uniformity of the label of each part in three kinds of following embodiments
In figure, be present continuous situation in its label, illustrate hereby.
1st, first embodiment
Fig. 1 is this first embodiment using the electromagnetism Deep forming device of new offer.The device includes driving coil
1st, forming punch 2, fixed cell 3, flanging unit 4, boosting coil 5, shaping dies 7, power subsystem 9.
Power subsystem 9 includes driving coil power supply 9-2 and boosting coil power 9-1, and driving coil power supply 9-2 is drives line
Circle 1 provides pulse voltage, and driving coil power supply 9-1 is that boosting coil 5 provides pulse voltage.Driving coil 1 is used to produce first
Alternating magnetic field, forming punch 2 is located at the lower section of driving coil 1, and the first whirlpool is produced on forming punch 2 by the first alternating magnetic field
Stream, the first vortex and the first action of alternating magnetic field, produce axial pulse-electromagnetic force on forming punch 2, driving forming punch to
Lower motion.Boosting coil 5 is located at the top of plate flange region to be formed, and flanging unit 4 is located at the top of boosting coil 5, into
Shape mould 7 is located at below plate to be formed, and boosting coil 5 passes through the second pulse current in the case where power supply 9-1 discharges.Such as
Shown in Fig. 2, second eddy current 10-2 is induced on plate to be formed by the second pulse current, in the second eddy current and boosting coil
The sense of current is on the contrary, then produce the boosting pulse-electromagnetic force away from boosting coil 5, and the boosting pulse-electromagnetic force can be decomposed again
For boosting pulse electromagnetic radial load 11-1 and boosting pulse electromagnetic axial force 11-2.Boosting pulse electromagnetic radial load 11-1 is used to make
The metal material of plate flange region to be formed flows into the cavity of shaping dies；Boosting pulse electromagnetic axial force and flanging list
Member 4 provides pressure-pad-force for plate flange region to be formed jointly.Prevent plate to be formed from being tilted during shaping, influence
Forming accuracy.Now, flanging unit 4, which is played, is fixed on boosting coil 5 on concave die 7, prevents reaction force from causing boosting
Coil 5 is moved.
Because the pulse-electromagnetic force that boosting coil is produced on plate to be processed always deviates from boosting coil, when boosting coil
External diameter be more than workpiece to be formed diameter, ensure that the boosting pulsed radial force on plate to be processed always towards finishing die
Has inside cavity flowing, when forming punch hits plate to be formed every time, the material of plate to be formed can flow into material in time
Expect weakened region, improve the forming property of material, and the region of the flange region of boost line circuit covering workpiece to be formed, Neng Goubao
Card can provide uniform boosting pulse electromagnetic footpath in plate forming process to be formed for whole plate flange region to be formed
Xiang Li.
The device for the electromagnetism Deep forming that the utility model is provided also includes fixed cell 3, and fixed cell 3 includes upper fixation
Plate, bottom plate and fixing bolt, upper mounted plate are located at the top of driving coil, and bottom plate is located at the lower section of shaping dies,
Upper mounted plate and bottom plate are connected by fixing bolt, and fixed cell is used for Constraints driven coil, is subject to driving coil
Axial pulse electromagnetic dynamic balance.Fixed cell can be hydraulic press.
Steam vent 8 is provided with above-mentioned shaping dies bottom, it is ensured that the pressure in forming process between workpiece and mould, no
The deformation of plate can be influenceed because of excessive.
Forming punch 2 includes driving plate 2-1 and hollow drift 2-2, driving plate 2-1 are located at driving coil lower section, driving plate
2-1 is conductor, for example copper, and the driving alternating electromagnetic field produced by driving coil can produce the first vortex in driving plate 2-1,
Axial pulse-electromagnetic force is produced by the first vortex and the first alternating magnetic field, drives driving plate 2-1 to move downward, hollow drift is with driving
Dynamic plate 2-1 connections, drive hollow drift to move by driving plate 2-1, and hollow drift is directly contacted with plate to be formed, by pulse electricity
Magnetic force is transferred on plate to be formed.In the case that the forming punch 2 of the structure can ensure that drift size and shape is constant, subtract
The weight of light forming punch, improves the speed of forming punch, is conducive to improving forming property.
Driving coil power supply 9-2 can use identical structure with boosting coil power 9-1, i.e., including discharge capacity and electricity
Resistance, discharge capacity discharges by resistance and driving coil or by the loop of resistance and the formation of boost line circle, produces pulse current.
As shown in figure 3, forming punch 2, which is mainly plate 6 to be formed, provides axial impulsive force, its driving force comes from driving
Coil power 9-2 discharges driving coil, when the second pulse current 12-1 in boosting coil 5 reaches peak value soon
Carve, now the material flowability energy highest of plate to be processed, driving coil 1 passes through the first pulse current 12-2, first pulse
Electric current produces the first reverse vortex in the driving plate of forming punch, and then produces away from driving coil, the arteries and veins of intensity maximum
Electromagnetic force is rushed, driving forming punch hits metal sheet shaping, effectively reduce being thinned for material, lifting material drawing and forming pole
Limit.Power subsystem for driving coil and boosting coil provide sequential, energy-controllable electric discharge, due to the pulse of the first pulse current
Width is less than the pulse width of the second pulse current, when the triggering moment of the first pulse current is located at the peak value of the second pulse current
Carve, it is ensured that the material flowability of plate to be formed is good when each plate to be formed is by axial pulse-electromagnetic force.By helping
The structure and spatial distribution of push away line circle 5 and driving coil 1, the discharge energy and electric discharge temporal regulation of power supply, it is possible to realize punching
The cooperation of axial pulse-electromagnetic force and boosting pulse-electromagnetic force during pressing formation, and then realize stamping middle material flowing
Control, improves limit Forming depth.
2nd, second embodiment
As shown in figure 4, in the second embodiment that the utility model is provided in the structure of boosting coil 5 and first embodiment
The structure of boosting coil 5 is different, and other structures are identical with first embodiment, and boosting coil 5 is located at plate to be formed by multiple
The boosting subcoil of flange region is constituted.Boosting subcoil structure in a ring, multiple boosting subcoils nested arrangement successively.
Fig. 5 is the connected mode of multiple boosting subcoils and second source unit, and each boosting subcoil one end is connected
Drawn afterwards by a copper bar and form contact, the contact is connected with second source unit 9-1 one end, the other end of each boosting subcoil
Each one copper bar of connection, which is individually drawn, forms contact, and multiple contacts are another with boosting subcoil power subsystem 9-1 by switching
One end is connected.
Fig. 6 is the power-up sequence figure of each boosting subcoil in boosting coil during plate addition shape to be formed；When initial,
Fig. 6 (a), plate flange region outward flange to be formed is located at the zone of action of outermost layer boosting subcoil in boosting coil, passes through
After one or many electric discharges, plate flange region outward flange to be formed enters time outer layer and helped away from outermost layer boosting subcoil
The zone of action of hairclipper coil.By adjusting the circuit of power subsystem discharge end, triggering time outer layer boosting subcoil continues to treating
Forming panels flange region edge provides electromagnetic force and carries out boosting, shown in such as Fig. 6 (b).Repeat said process, such as Fig. 6 (c) and such as
Shown in Fig. 6 (d), as plate flange region edge to be formed is constantly moved to center in forming process, correspondingly change second
The state switched in power subsystem, until whole shaping terminates.
Boosting subcoil in boosting coil 5 is inwardly uniformly distributed by the edge of plate to be formed, and by controlling boosting
Subcoil is passed through sequence of currents so that plate to be formed produces boosting electromagnetic force during Deep forming in flange region
Boosting subcoil will concentrate on the edge of plate to be formed all the time, can effectively lift the efficiency for pushing material.
Each boosting subcoil in boosting coil is connected by way of in parallel, by selecting particular contact, realization is helped
The control of the electromagnetic force field distribution of sheet material flowing to be processed is pushed away, that is, realizes the control of boosting electromagnetic force, only uses a set of power supply
The whole boosting process during Deep forming is achieved that, equipment requirement and installation difficulty are greatly reduced.Meanwhile, whole system
At most only need to two independent power supplys and achieve that to be that boosting coil and driving coil are powered, reduce coil discharge sequential and match somebody with somebody
The difficulty of conjunction, improves the reliability of whole forming process.
3rd, the 3rd embodiment
As shown in fig. 7, in the 3rd embodiment that the utility model is provided in the structure of shaping dies 7 and first embodiment
The structure of shaping dies 7 is different, and other structures are identical with first embodiment.
The surface of shaping dies 7 is provided with boss, and the height of the boss ensure that boosting coil 5 is placed on shaping dies 7
When, the upper surface of plate 6 to be formed can not be contacted.During Deep forming, because boosting coil and plate to be formed are straight
Contact, when the material of plate to be formed flows into the cavity of shaping dies, material and the boosting coil of plate to be formed are sent out
Raw displacement, produces powerful frictional force, causes workpiece surface scratch occur and be damaged between the two.By being set on shaping dies
Boss is put, is realized in the case where being not directly contacted with, is provided pressure-pad-force for plate, disclosure satisfy that some have to surface flatness
It is required that Forming Workpiece processing.
As it will be easily appreciated by one skilled in the art that the foregoing is only preferred embodiment of the present utility model, not
To limit the utility model, all any modifications made within spirit of the present utility model and principle, equivalent substitution and change
Enter, should be included within protection domain of the present utility model.
Claims (6)
1. a kind of electromagnetism Deep forming device, it is characterised in that including：
Driving coil (1), the first variation magnetic field is produced when being passed through the first pulse current；
Fixed cell (3), above the driving coil (1), constrains the driving coil (1)；
Forming punch (2), below the driving coil (1), is moved downward, and pass through when by axial pulse-electromagnetic force
Directly contacted with plate to be formed and axial pulse-electromagnetic force is transferred on plate to be formed；The axial pulse-electromagnetic force be by
Produced behind first variation magnetic field and the first eddy current effect, first vortex is produced by the first variation magnetic field；
Boosting coil (5), positioned at the top of plate flange region to be formed, the second change is produced when being passed through the second pulse current
Magnetic field；Second variation magnetic field produces second eddy current on plate to be formed, is acted on by the second variation magnetic field and second eddy current
Boosting pulse-electromagnetic force is produced on plate to be formed, the boosting pulse-electromagnetic force promotes plate flange region material to be formed
Flowed to the inside cavity of shaping dies (7), and pressure-pad-force is provided for plate flange region to be formed；
Flanging unit (4), above the boosting coil (5), constrains the boosting coil (5)；
Shaping dies (7), positioned at plate lower surface to be formed, provided with cavity, being coordinated by cavity with the forming punch (2) makes
Plate to be formed is machined to required shape；
And first pulse current width be less than the second pulse current width, the first pulse current triggering moment be later than the second pulse electricity
Flow triggering moment.
2. electromagnetism Deep forming device according to claim 1, it is characterised in that the forming punch (2) includes：
Driving plate (2-1), below the driving coil, induces the first vortex after by the first variation magnetic field, described
First variation magnetic field produces axial pulse-electromagnetic force with the first eddy current effect, and the driving plate is driven by axial pulse-electromagnetic force
(2-1) is moved downward；And
Hollow punch (2-2), is fixedly connected with the driving plate (2-1), is moved downward jointly with the driving plate (2-1), leads to
Cross directly to contact with plate to be formed and axial pulse-electromagnetic force is transferred on the plate to be formed (6).
3. electromagnetism Deep forming device according to claim 1, it is characterised in that the external diameter of the boosting coil (5) is more than
The diameter of the plate to be formed (6), and the boosting coil (5) covers the plate flange region to be formed.
4. electromagnetism Deep forming device according to claim 1, it is characterised in that the boosting coil includes multiple boostings
Coil, each boosting subcoil is loop configuration；Multiple boosting subcoils nesting arrangement, and positioned at plate flange to be formed successively
The top in region；And when plate member edge to be formed marches to any one boosting subcoil, the boosting subcoil is passed through pulse
Electric current.
5. electromagnetism Deep forming device according to claim 1, it is characterised in that the cavity bottom of the shaping dies is provided with
Steam vent, balances the pressure of plate upper surface to be formed and lower surface.
6. electromagnetism Deep forming device according to claim 1, it is characterised in that the shaping dies is provided with boss, allows
The boosting coil (5) does not contact directly with the plate (6) to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720212174.3U CN206550190U (en) | 2017-03-07 | 2017-03-07 | A kind of electromagnetism Deep forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720212174.3U CN206550190U (en) | 2017-03-07 | 2017-03-07 | A kind of electromagnetism Deep forming device |
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| Publication Number | Publication Date |
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| CN206550190U true CN206550190U (en) | 2017-10-13 |
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ID=60362591
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720212174.3U Withdrawn - After Issue CN206550190U (en) | 2017-03-07 | 2017-03-07 | A kind of electromagnetism Deep forming device |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825192A (en) * | 2017-03-07 | 2017-06-13 | 华中科技大学 | A kind of electromagnetism Deep forming device and method |
| CN109482705A (en) * | 2018-11-22 | 2019-03-19 | 湖北工业大学 | A kind of plate forming device and manufacturing process based on the load of multistage electromagnetic force timing |
| CN109967591A (en) * | 2019-03-18 | 2019-07-05 | 三峡大学 | A kind of device and method for realizing plate electro-magnetic forming radial thrust using axial constant magnetic field and inductive loop |
| CN114713702A (en) * | 2022-03-24 | 2022-07-08 | 华中科技大学 | Metal processing workpiece shape correcting processing device and method based on electric explosion |
-
2017
- 2017-03-07 CN CN201720212174.3U patent/CN206550190U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825192A (en) * | 2017-03-07 | 2017-06-13 | 华中科技大学 | A kind of electromagnetism Deep forming device and method |
| CN106825192B (en) * | 2017-03-07 | 2019-01-29 | 华中科技大学 | A kind of electromagnetism Deep forming device and method |
| CN109482705A (en) * | 2018-11-22 | 2019-03-19 | 湖北工业大学 | A kind of plate forming device and manufacturing process based on the load of multistage electromagnetic force timing |
| CN109967591A (en) * | 2019-03-18 | 2019-07-05 | 三峡大学 | A kind of device and method for realizing plate electro-magnetic forming radial thrust using axial constant magnetic field and inductive loop |
| CN114713702A (en) * | 2022-03-24 | 2022-07-08 | 华中科技大学 | Metal processing workpiece shape correcting processing device and method based on electric explosion |
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Granted publication date: 20171013 Effective date of abandoning: 20190129 |