CN106825192B - A kind of electromagnetism Deep forming device and method - Google Patents
A kind of electromagnetism Deep forming device and method Download PDFInfo
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- CN106825192B CN106825192B CN201710129683.4A CN201710129683A CN106825192B CN 106825192 B CN106825192 B CN 106825192B CN 201710129683 A CN201710129683 A CN 201710129683A CN 106825192 B CN106825192 B CN 106825192B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
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Abstract
The invention discloses a kind of electromagnetism Deep forming device and methods, the device includes driving coil, fixed cell, forming punch, boosting coil, flanging unit and shaping dies, the second alternating magnetic field is generated by injecting the second pulse current into boosting coil, second alternating electromagnetic field generates 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, facilitate material in plate to be formed from the boosting pulse electromagnetic radial force that boosting pulse-electromagnetic force decomposes to flow into shaping dies.During the second pulse current, the first alternating magnetic field is generated by injecting the first pulse current into driving coil, first alternating magnetic field inductive loop in forming punch, driving forming punch moves downward, it acts on plate to be formed, the mobility of plate to be formed is high at this time, can be improved forming property, acting on plate to be formed by forming punch makes its forming, can be improved pad pasting performance.
Description
Technical field
The invention belongs to metal forming manufacturing fields, more particularly, to a kind of electromagnetism Deep forming device and method.
Background technique
It is that the high-strength light alloy material of representative is obtained in advanced manufacturing field that the requirement of energy conservation and environmental protection, which promotes aluminium alloy,
To extensive use.But conventional forming techniques encounter major obstacles, major embodiment in high-strength light alloy material processed and applied
For light alloy plasticity is poor, difficult forming, a kind of new forming technique is needed.Studies have shown that when high-speed shapes, the forming of material
Performance is significantly improved.Electro-magnetic forming is a kind of Rapid Manufacturing Technology for shaping metal material using Lorentz force, is belonged to
High-speed forming, can greatly improve the forming property of material.But when carrying out deep-draw type component forming, on the one hand, itself and biography
Quasi-static forming of uniting faces the easily thinned problem of workpiece, on the other hand, for complex part, work under electromagnetic forming technique
The mold of part has to be hoisted.
Summary of the invention
To solve, traditional quasi-static forming light alloy plasticity is poor, tearable and mold is poor, technique requires height to ask
Topic, the invention proposes one kind can take into account the electromagnetism Deep forming for promoting material drawing forming limit and improving plate forming accuracy
Device and method.
To achieve the above object, as an aspect of of the present present invention, the present invention provides a kind of electromagnetism Deep forming device, packets
It includes:
Driving coil, for generating the first variation magnetic field when being passed through the first pulse current；
Fixed cell is located above driving coil, is used for Constraints driven coil；
Forming punch, be located at driving coil below, for being moved downward when by axial pulse-electromagnetic force, and by with
Plate to be formed directly contacts and axial pulse-electromagnetic force is transferred on plate to be formed；Axial pulse-electromagnetic force is become by first
It is generated behind magnetizing field and the first eddy current effect, the first vortex is generated by the first variation magnetic field；
Boosting coil, positioned at the top of plate flange region to be formed, for generating when being passed through the second pulse current
Two variation magnetic fields；Second variation magnetic field generates second eddy current on plate to be formed, is made by the second variation magnetic field and second eddy current
With boosting pulse-electromagnetic force is generated on plate to be formed, boosting pulse-electromagnetic force is for promoting plate flange region material to be formed
Expect to flow to the inside cavity of shaping dies, and provides pressure-pad-force for plate flange region to be formed；
Flanging unit is located above boosting coil, for constraining boosting coil；
Shaping dies is located at plate lower surface to be formed, is equipped with cavity, cooperated by cavity and forming punch make it is to be formed
Plate is machined to required shape；
And first pulse current width 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.
Electromagnetism Deep forming device provided by the invention, the first variation magnetic field generated by driving coil drive forming punch
Quickly movement, forming punch hit metal sheet forming, the forming speed of workpiece are improved, since the first pulse current width is less than
Second pulse current width, the first pulse current triggering moment are later than the second pulse current triggering moment, in each axial arteries and veins
During rushing electromagnetism power drive forming punch shock plate forming to be formed, all exists in the flange region of plate to be formed and help
Pulse-electromagnetic force is pushed away, material flowability is promoted, plate to be formed is effectively reduced and is caused in forming process since material is thinned
Plate tearing to be formed.Plate to be formed is hit by forming punch simultaneously to shape, and can protect the pad pasting in forming process.Cause
This, electromagnetism Deep forming device provided by the invention, which can be taken into account, promotes material drawing forming limit and raising plate forming accuracy.
Preferably, forming punch includes:
Driving plate is located at below driving coil, and for inducing the first vortex after by the first variation magnetic field, first becomes
Magnetizing field and the first eddy current effect generate axial pulse-electromagnetic force, drive driving plate to move downward by axial pulse-electromagnetic force；With
And
Hollow punch is fixedly connected with driving plate, is moved downward jointly with driving plate, be used for and by with plate to be formed
Directly axial pulse-electromagnetic force is transferred on plate to be formed by contact.
Forming punch uses hollow structure, in the case where guaranteeing that formed punch shape is constant, mitigates the quality of formed punch, improve at
The speed that shape formed punch moves downward improves the forming property of plate to be formed.
Preferably, the outer diameter of boosting coil is greater 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 ring structure, multiple boosting
Coil successively nesting arrangement, and it is located at the top of plate flange region to be formed, and when plate member edge to be formed marches to arbitrarily
When one boosting subcoil, which is passed through pulse current.
Preferably, shaping dies bottom is provided with gas vent, for balancing the pressure of plate upper surface and lower surface to be formed.
Preferably, shaping dies is equipped with boss, for allowing boosting coil not contact directly with plate to be formed.
As one aspect of the present invention, the present invention provides a kind of electromagnetism Deep forming methods, include the following steps:
(1) boosting pulse-electromagnetic force, boosting pulse-electromagnetic force are generated in plate flange region to be formed by electromagnetic induction
Material for accelerating plate flange region to be formed is flowed to the inside cavity of shaping dies, and provides pressure for plate to be formed
Bian Li；
(2) during each boosting pulse-electromagnetic force continues, application is directly contacted with plate to be formed by forming punch
Axial pulse-electromagnetic force processes plate to be formed on plate to be formed, and by cooperation between forming punch and shaping dies
At required shape.
Further, include the following steps:
When each boosting impulsive force reaches peak value, the axial arteries and veins of application is directly contacted with plate to be formed by forming punch
Electromagnetic force is rushed on plate to be formed.
The invention has the following beneficial effects:
1, using pulse electromagnetic power drive forming punch, make forming punch sharp downward movement, by with plate to be formed
Directly contact transmitting pulse-electromagnetic force, effectively raises the shaping rate of plate, while with pulse electromagnetic power drive lightweight
Formed punch by boosting coil generates pulse-electromagnetic force during shaping, and promotes material to flow to mould inside, can allow forming
There is material filling in part, with it is traditional it is quasi-static it is stamping compared with, the forming limit of material can be significantly improved.Meanwhile it utilizing
Forming punch and shaping dies, which carry out high speed stamping, can significantly improve mold compared with existing electromagnetic forming technique, improve
Electromagnetic energy rate, the effective workpiece that reduces are sprung back, and improve forming accuracy.
2, provide pressure above driving coil by fixed cell, guarantee in first power source unit discharge process, at
When shape plate is deformed to bottom offset, device will not be made to vibrate because of forming punch striking work, so as to cause flanging list
Member, which is fallen, to be caused to damage equipment.
3, the outer diameter of boosting coil is greater 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
Entire plate flange region to be formed provides uniform boosting pulse electromagnetic radial force.
4, the pressure in gas vent control forming process between plate and shaping dies to be formed makes plate to be formed will not be because
For upper surface is excessive with lower surface pressure and leads to the deformation of plate.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the structural schematic diagram of the first embodiment of electromagnetism Deep forming device provided by the invention；
Fig. 2 be first embodiment provided by the invention, in second embodiment and 3rd embodiment boosting coil at
The flange region of shape plate generates the schematic diagram of second eddy current and pulse-electromagnetic force；
Fig. 3 is first embodiment provided by the invention, boosting coil discharge electricity in second embodiment and 3rd embodiment
The time diagram of discharge current in stream and driving coil；
Fig. 4 is the structural schematic diagram of the second embodiment of electromagnetism Deep forming device provided by the invention；
Fig. 5 is the line signal of multiple boosting subcoils in the second embodiment of electromagnetism Deep forming device provided by the invention
Figure；
Fig. 6 is the work signal of multiple boosting subcoils in the second embodiment of electromagnetism Deep forming device provided by the invention
Figure, wherein (a) is outermost layer coil operation schematic diagram, is (b) time outer coil operation schematic diagram, (c) is middle layer coil work
Make schematic diagram, (d) innermost layer coil working schematic diagram；
Fig. 7 is the structural schematic diagram of the 3rd embodiment of electromagnetism Deep forming device provided by the invention；
Each section label declaration in figure: 1: driving coil, 2: forming punch, 2-1: driving plate, 2-2: hollow punch, 3: Gu
Order member, 4: flanging unit, 5: boosting coil, 6: plate to be formed, 7: shaping dies, 8: gas vent, 9: power supply unit, 10-
1: the second pulse current, 10-2: second eddy current direction, 11-1: boosting pulse radial electromagnetic force, 11-2: the axial electricity of boosting pulse
Magnetic force, the 12-1: the second pulse current waveform, the 12-2: the first pulse current waveform.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
It is corresponding attached in certain embodiments for the consistency for guaranteeing the label of each component in three kinds of following embodiments
In figure, label illustrates hereby there are continuous situation.
1, first embodiment
Fig. 1 is the first embodiment of electromagnetism Deep forming device provided by the invention.The device include driving coil 1, at
Shape formed punch 2, fixed cell 3, flanging unit 4, boosting coil 5, shaping dies 7, power supply unit 9.
Power supply unit 9 includes driving coil power supply 9-2 and boosting coil power 9-1, driving coil power supply 9-2 are driving line
Circle 1 provides pulse voltage, and boosting coil power 9-1 is that boosting coil 5 provides pulse voltage.Driving coil 1 is for generating first
Alternating magnetic field, forming punch 2 are located at the lower section of driving coil 1, and the first whirlpool is generated on forming punch 2 by the first alternating magnetic field
Stream, the first vortex and the first action of alternating magnetic field, generate axial pulse-electromagnetic force on forming punch 2, driving forming punch to
Lower movement.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, at
Shape mold 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
On the contrary, then generating the boosting pulse-electromagnetic force for deviating from boosting coil 5, which can decompose current direction again
For boosting pulse electromagnetic radial force 11-1 and boosting pulse electromagnetic axial force 11-2.Boosting pulse electromagnetic radial force 11-1 is for making
The metal material of plate flange region to be formed is flowed into the cavity of shaping dies；Boosting pulse electromagnetic axial force and flanging list
Member 4 provides pressure-pad-force jointly for plate flange region to be formed.It prevents plate to be formed from tilting during shaping, influences
Forming accuracy.Boosting coil 5 is fixed on shaping dies 7 at this point, flanging unit 4 plays, prevents reaction force from leading to boosting
Coil 5 is mobile.
Since the pulse-electromagnetic force that boosting coil generates on plate to be processed always deviates from boosting coil, when boosting coil
Outer diameter be greater than workpiece to be formed diameter, the boosting pulsed radial force on plate to be processed can be guaranteed 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, improves 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 diameter in plate forming process to be formed for entire plate flange region to be formed
Xiang Li.
The device of electromagnetism Deep forming provided by the invention further includes fixed cell 3, fixed cell 3 include upper mounted plate 3-1,
Bottom plate 3-2 and fixing bolt, upper mounted plate 3-1 are located at the top of driving coil, and bottom plate 3-2 is located at shaping dies
Lower section, upper mounted plate and bottom plate are connected by fixing bolt, fixed cell be used for Constraints driven coil, with driving coil by
The axial pulse electromagnetic dynamic balance arrived.Fixed cell can be hydraulic press.
Gas vent 8 is equipped on above-mentioned shaping dies bottom, it is ensured that the pressure in forming process between workpiece and mold, no
The deformation of plate can be influenced because of excessive.
Forming punch 2 includes that driving plate 2-1 and hollow formed punch 2-2, driving plate 2-1 are located at driving coil lower section, driving plate
2-1 is conductor, such as copper, and the first vortex can be generated in driving plate 2-1 by the driving alternating electromagnetic field that driving coil generates,
It is vortexed by first and the first alternating magnetic field generates axial pulse-electromagnetic force, drive driving plate 2-1 to move downward, hollow formed punch and drive
Movable plate 2-1 connection drives the movement of hollow formed punch by driving plate 2-1, and hollow formed punch 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 guarantee that formed punch size and shape is constant, subtract
The weight of light forming punch, improves the speed of forming punch, is conducive to improve forming property.
Driving coil power supply 9-2 can use identical structure with boosting coil power 9-1, that is, include discharge capacity and electricity
Resistance, discharge capacity discharge by resistance and driving coil or by the circuit that resistance and boosting coil are formed, and generate pulse current.
As shown in figure 3, forming punch 2 is mainly that plate 6 to be formed provides axial impulsive force, driving force is from driving
Coil power 9-2 discharges to driving coil, when the second pulse current 12-1 in boosting coil 5 reaches peak value fastly
It carves, at this time 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 generates the first reversed vortex in the driving plate of forming punch, and then generates the arteries and veins away from driving coil, intensity maximum
Electromagnetic force is rushed, driving forming punch hits metal sheet forming, effectively reduces being thinned for material, promotes material drawing and forming pole
Limit.Power supply unit provides the electric discharge of timing, energy-controllable for driving coil and boosting coil, due to the pulse of the first pulse current
Width less than the second pulse current pulse width, when the triggering moment of the first pulse current is located at the peak value of the second pulse current
It carves, 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
Push away the structure and spatial distribution of coil 5 and driving coil 1, the discharge energy and electric discharge temporal regulation of power supply, so that it may 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.
2, second embodiment
As shown in figure 4,5 structure of boosting coil and boosting in first embodiment in second embodiment provided by the invention
5 structure of coil is different, and other structures are identical as first embodiment, and boosting coil 5 is located at plate flange to be formed by multiple
The boosting subcoil in region is constituted.Boosting subcoil structure in a ring, multiple boosting subcoils successively nested arrangement.
Fig. 5 is the connection type of multiple boosting subcoils and second power source unit, and each boosting subcoil one end connects
It is drawn afterwards by a copper bar and forms contact, which connect with the one end boosting coil power 9-1, the other end of each boosting subcoil
Respectively one copper bar of connection, which is individually drawn, forms contact, and multiple contacts pass through switch and the boosting coil power 9-1 other end connects
It connects.
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 outer edge to be formed are located at the zone of action of outermost layer boosting subcoil in boosting coil, pass through
After one or many electric discharges, plate flange region outer edge to be formed enters time outer layer and helps far from outermost layer boosting subcoil
The zone of action of hairclipper coil.By adjusting the circuit of power supply unit discharge end, trigger time outer layer boosting subcoil continue to
Forming panels flange region edge provides electromagnetic force and carries out boosting, as shown in Fig. 6 (b).It repeats the above process, such as Fig. 6 (c) and such as
Fig. 6 (d) correspondingly changes second source as plate flange region edge to be formed in forming process is constantly to center movement
The state switched in unit, terminates until entirely shaping.
Boosting subcoil in boosting coil 5 is inwardly uniformly distributed by the edge of plate to be formed, and passes through control boosting
Subcoil is passed through sequence of currents, so that plate to be formed generates boosting electromagnetic force during Deep forming, in flange region
Boosting subcoil will concentrate on the edge of plate to be formed always, can effectively promote the efficiency of push material.
Each boosting subcoil in boosting coil is connected by way of in parallel, by selecting particular contact, realization is helped
The control for pushing away the electromagnetic force field distribution of sheet material flowing to be processed, that is, realize the control of boosting electromagnetic force, only with a set of power supply
Achieve that the entire boosting process during Deep forming, equipment requirement and installation difficulty can be greatly reduced.Meanwhile whole system
It at most only needs two independent power supplys to achieve that and powers for boosting coil and driving coil, reduce coil discharge timing and match
The difficulty of conjunction improves the reliability of entire forming process.
3, third embodiment
As shown in fig. 7, being shaped in 7 structure of shaping dies and first embodiment in third embodiment provided by the invention
7 structure of mold is different, and other structures are identical as first embodiment.
7 surface of shaping dies is equipped with boss, and the height of the boss can guarantee 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, since boosting coil and plate to be formed are straight
Contact, when the material of plate to be formed is flowed into the cavity of shaping dies, the material and boosting coil of plate to be formed are sent out
Raw displacement, generates powerful frictional force between the two, workpiece surface is caused scratch occur and be damaged.By being set on shaping dies
Boss is set, realizes in the case where being not directly contacted with, provides pressure-pad-force for plate, can satisfy some pairs of surface flatnesses has
It is required that Forming Workpiece processing.
As another aspect of the present invention, electromagnetism Deep forming method provided by the invention, specific implementation method includes:
S1: plate 6 to be formed is placed between shaping dies 7 and boosting coil 5, and is compressed with flanging unit 4；
S2: forming punch 2 is placed in 6 top of plate to be formed；
S3: driving coil 1 is placed on forming punch 2, and is compressed with fixed cell 3；
Step 4: boosting coil power 9-1 discharges to boosting coil 5, and boosting pulse electromagnetic is generated on plate to be formed
Power, boosting pulse-electromagnetic force can be decomposed into boosting pulse electromagnetic radial force and boosting pulse electromagnetic axial force, boosting pulse electricity
Magnetic radial force push metal sheet material to the inside cavity of shaping dies flow, boosting pulse electromagnetic axial force be used for for at
Shape plate provides pressure-pad-force；
Step 5: after the triggering of the second pulse current, driving coil power supply 9-2 discharges to driving coil 1, generates the first arteries and veins
Electric current is rushed, the first pulse current generates the first alternating magnetic field on forming punch, generates powerful axial pulse electromagnetic power drive
Forming punch hits metal sheet forming, and guarantees to be greater than boosting coil middle arteries by the pulse electricity width in boosting coil that rush electric current wide
Degree can make the mobile performance of material in each forming process of plate to be formed high；Preferred pulse electric current drives close to peak value moment
Moving winding power supply 9-2 discharges to driving coil 1, and material flowability is maximum in plate to be formed at this time, and forming property is best.
Step 6: repeating Step 3: four, five, until completing the Deep forming of plate to be formed.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of electromagnetism Deep forming device characterized by comprising
Driving coil (1), for generating the first variation magnetic field when being passed through the first pulse current；
Fixed cell (3) is located above the driving coil (1), for constraining the driving coil (1)；
Forming punch (2) is located at below the driving coil (1), for being moved downward when by axial pulse-electromagnetic force, and
Axial pulse-electromagnetic force is transferred on plate to be formed by directly being contacted with plate to be formed；The axial direction pulse-electromagnetic force
It is by being generated behind the first variation magnetic field and the first eddy current effect, first vortex is generated by the first variation magnetic field；
The forming punch includes: driving plate (2-1), is located at below the driving coil, for when by the first variation magnetic field
After induce the first vortex, first variation magnetic field and the first eddy current effect generate axial pulse-electromagnetic force, by axial pulse
Electromagnetic force drives the driving plate (2-1) to move downward；And hollow punch (2-2), with the driving plate (2-1) fixed company
It connects, is moved downward jointly with driving plate, for axial pulse-electromagnetic force to be transferred to institute by directly contacting with plate to be formed
It states on plate to be formed (6)；
Boosting coil (5), positioned at the top of plate flange region to be formed, for generating second when being passed through the second pulse current
Variation magnetic field；Second variation magnetic field generates second eddy current on plate to be formed, by the second variation magnetic field and second eddy current
Generation boosting pulse-electromagnetic force on plate to be formed is acted on, the boosting pulse-electromagnetic force is for promoting plate flange to be formed
Region material is flowed to the inside cavity of shaping dies (7), and provides pressure-pad-force for plate flange region to be formed；
Flanging unit (4) is located above the boosting coil (5), for constraining the boosting coil (5)；
Shaping dies (7) is located at plate lower surface to be formed, is equipped with cavity, cooperated by cavity and forming punch make it is to be formed
Plate is machined to required shape；
And first pulse current width less than the second pulse current width, the first pulse current triggering moment be later than the second pulse electricity
Flow triggering moment；
During each axial pulse electromagnetic power drive forming punch (2) hits plate to be formed forming, to be formed
All there is boosting pulse-electromagnetic force in the flange region of plate, promote material flowability, effectively reduce plate to be formed and shaping
It causes plate to be formed to tear since material is thinned in journey, while hitting plate to be formed by forming punch (2) and shaping, it can
Protect the mold in forming process.
2. electromagnetism Deep forming device according to claim 1, which is characterized in that the outer diameter of the boosting coil (5) is greater than
The diameter of the plate to be formed (6), and the boosting coil (5) covers the plate flange region to be formed.
3. electromagnetism Deep forming device according to claim 1, which is characterized in that the boosting coil includes multiple boosting
Coil, each boosting subcoil are ring structure；Multiple boosting subcoils successively nesting arrangement, and it is located at plate flange to be formed
The top in region；And when plate member edge to be formed marches to any one boosting subcoil, which is passed through pulse
Electric current.
4. electromagnetism Deep forming device according to claim 1, which is characterized in that the cavity bottom of the shaping dies is provided with
Gas vent, for balancing the pressure of plate upper surface and lower surface to be formed.
5. electromagnetism Deep forming device according to claim 1, which is characterized in that the shaping dies is equipped with boss, uses
In allowing the boosting coil (5) not contact directly with the plate (6) to be formed.
6. a kind of electromagnetism Deep forming method of electromagnetism Deep forming device as described in claim 1, which is characterized in that including as follows
Step:
(1) boosting pulse-electromagnetic force, the boosting pulse-electromagnetic force are generated in plate flange region to be formed by electromagnetic induction
Material for accelerating plate flange region to be formed is flowed to the inside cavity of shaping dies, and provides pressure for plate to be formed
Bian Li；
(2) during each boosting pulse-electromagnetic force continues, application is directly contacted axially with plate to be formed by forming punch
Pulse-electromagnetic force makes plate to be formed be processed into institute on plate to be formed, and by cooperation between forming punch and shaping dies
Need shape.
7. electromagnetism Deep forming method as claimed in claim 6, which is characterized in that in the step (2), when each boosting pulse
When electromagnetic force reaches peak value, the axial pulse-electromagnetic force of application is directly contacted in plate to be formed with plate to be formed by forming punch
On part.
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| CN201710129683.4A CN106825192B (en) | 2017-03-07 | 2017-03-07 | A kind of electromagnetism Deep forming device and method |
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| CN106825192A (en) | 2017-06-13 |
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