CN109482705A - A kind of plate forming device and manufacturing process based on the load of multistage electromagnetic force timing - Google Patents
A kind of plate forming device and manufacturing process based on the load of multistage electromagnetic force timing Download PDFInfo
- Publication number
- CN109482705A CN109482705A CN201811398493.3A CN201811398493A CN109482705A CN 109482705 A CN109482705 A CN 109482705A CN 201811398493 A CN201811398493 A CN 201811398493A CN 109482705 A CN109482705 A CN 109482705A
- Authority
- CN
- China
- Prior art keywords
- plate
- driving
- punch
- electromagnetic force
- pin
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to metal forming manufacturing fields, disclose a kind of plate forming device based on the load of multistage electromagnetic force timing, including being located at the cavity plate below plate to be formed, it further include the punch-pin above plate to be formed with cavity plate cooperation, blank holder is equipped with above plate to be formed, the first passage moved for punch-pin is equipped in blank holder, punch-pin include with the formed punch of cavity plate cooperation and the driving piece that is fixed on above formed punch, be successively arranged the driving coil that at least two generations driving high-intensity magnetic field driving drives piece to move downward from top to bottom in first passage side wall in blank holder.The invention also discloses a kind of manufacturing process of plate forming device based on the load of multistage electromagnetic force timing.A kind of plate forming device and manufacturing process based on the load of multistage electromagnetic force timing of the present invention, makes electro-magnetic forming have both the feature that shaping rate is high, total curring time is short, molding metallic material type is more, Forming depth is big and mold is good.
Description
Technical field
The present invention relates to metal forming manufacturing fields, and in particular to it is a kind of based on multistage electromagnetic force timing load plate at
Shape dress is set and manufacturing process.
Background technique
Electro-magnetic forming is the vortex incuded in alternating magnetic field using metal works to be formed and magnetic field interaction, produced
Raw electromagnetic force is in workpiece, a kind of forming mode for making workpiece deform.Compared to traditional quasi-static manufacturing process,
Electro-magnetic forming has the characteristics that shaping rate is high, can significantly improve the forming property of material, improves forming limit.Therefore, electric
Magnetic forming technology has broad application prospects in fields such as automobile, aerospace manufactures.
Traditional electromagnetic forming method is electromagnetism direct forming method, i.e., the vortex incuded in metal works and magnetic field phase interaction
Workpiece is directly acted on the electromagnetic force of generation.
Chinese utility model patent application (publication date: 04 month 2018 10 days, publication number: 207204963 U of CN) is open
A kind of axial direction-radial electromagnetic force timesharing load plate electromagnetism hemmer and method, comprising: axial electromagnetic force loaded line
Circle, radial electromagnetic force loading coil, flanging, cavity plate, capacitor power, axial electromagnetic force loading coil are placed within flanging, flange
Workpiece is placed in the upper surface of axial electromagnetic force loading coil and flanging, and radial electromagnetic force loading coil is placed in the inner hole of flange workpiece
In, cavity plate is placed on flange workpiece；Radial electromagnetic force loading coil and freewheeling diode differential concatenation, then with axial magnetic
Power loading coil is in parallel, and capacitor power is the coil power supply connected by discharge switch.The utility model is using radial electromagnetism
The mode that power and axial electromagnetic force separately load first passes through radial electromagnetic force and directly acts on metal sheet and wait for flange region, makes
It starts flange, directly acts on plate by axial electromagnetic force afterwards, completes last mold process.But electromagnetism directly at
Deficiency existing for shape method mainly has two o'clock: (1) due to there is no punch-pin, can not in forming process to workpiece inverted constraint so that
The shaping form of workpiece is difficult to control；(2) for the low conductivities metal works such as stainless steel, the vortex that is incuded in forming process
Intensity is weaker, brings it about the electromagnetic force obviously deformed enough to be difficult to generate intensity, therefore the manufacturing process is only applicable to
The high metal of conductivity, such as aluminium, copper.
Meanwhile for this problem, domestic and foreign scholars propose following two corrective measure:
The first is electromagnetism assist formation method, i.e., electro-magnetic forming is with the quasi-static stamping manufacturing process combined, such as
Document " Process design of combined deep drawing and electromagnetic sharp edge
In forming of DP980 steel sheet ", the scholars such as M.K.Choi and H.Huh of Korea Advanced Institute of Science and Technology (KAIST)
Have studied the electromagnetism assist formation method of DP980 high-strength stainless steel, first with formed punch by stainless steel plate preform to cavity plate wheel
Wide shape approximately, then by the form-wound coil electric discharge in insert punch, electromagnetic force is stainless after preform
Steel completes last mold process.But the disadvantage of this method is that quasi-static stamping press (action time is usually second grade)
It is difficult to realize the load of the continuous cooperation in timing with pulse-electromagnetic force (action time is usually microsecond or Millisecond), it need to be by two kinds
Forming mode interval load takes a long time on workpiece, causing forming process complicated.
Second is the indirect forming process of electromagnetism, i.e., stamping to workpiece progress by electromagnetism power drive formed punch, such as:
Chinese invention patent application (publication date: 06 month 2017 13 days, publication number: 106825192 A of CN) discloses one
Kind electromagnetism Deep forming device and method, which includes driving coil, fixed cell, forming punch, boosting coil, flanging unit
And shaping dies, the second alternating magnetic field, the second alternating electromagnetic field are generated by injecting the second pulse current into boosting coil
Boosting pulse-electromagnetic force is generated in plate to be formed, the boosting pulse electromagnetic axial force decomposed by boosting pulse-electromagnetic force is used for
Pressure-pad-force is provided for plate to be formed, the boosting pulse electromagnetic radial force decomposed by boosting pulse-electromagnetic force facilitates plate to be formed
Material is flowed into shaping dies in part.During the second pulse current, by injecting the first pulse current into driving coil
The first alternating magnetic field, the first alternating magnetic field inductive loop in forming punch are generated, driving forming punch is moved downward, acted on
On plate to be formed, the mobility of plate to be formed is high at this time, can be improved forming property, is acted on by forming punch to be formed
Plate makes its forming, can be improved pad pasting performance.But in the method, when formed punch is far from driving coil, suffered electromagnetic force
It will be remarkably decreased, to reach biggish Forming depth, driving coil need to be downward close to formed punch after a discharge cycle, then into
The next discharge cycle of row, therefore entire Deep forming process needs multiple discharge cycles that could complete, the overall required time compared with
It is long.
Summary of the invention
The purpose of the present invention is to the deficiencies of above-mentioned technology, provide a kind of plate based on the load of multistage electromagnetic force timing
Part forming device and manufacturing process, having both electro-magnetic forming, shaping rate is high, total curring time is short, molding metallic material type
Feature more, Forming depth is big and mold is good.
To achieve the above object, a kind of plate based on the load of multistage electromagnetic force timing designed by the present invention is at shape dress
It sets, further includes being located above the plate to be formed to cooperate with the cavity plate including being located at the cavity plate below plate to be formed
Punch-pin forms the plate to be formed finally to required shape, the plate to be formed by the cavity plate and punch-pin
Top is equipped with blank holder, and the blank holder is matched with the cavity plate, carries out flanging to the plate to be formed, prevents from shaping
Plate end corrugation to be formed described in journey, influences final forming effect, is equipped in the blank holder for punch-pin movement
First passage, the punch-pin include and the formed punch of cavity plate cooperation and the driving piece being fixed on above the formed punch, the pressure
Being successively arranged at least two generations driving high-intensity magnetic field in flange in first passage side wall from top to bottom drives the driving piece downward
The driving coil of movement, after the driving coil generates driving high-intensity magnetic field, the inductive loop in the driving piece, the vortex with by force
Magnetic field interaction generates driving electromagnetic force, moves downward the driving piece, thus move downward the formed punch jointly, institute
It states formed punch to be located above the plate to be formed, the driving electromagnetic force that the driving piece is subject to through the driving coil is transferred to
On the plate to be formed.
Preferably, each driving coil is connected with the mutually independent pulse power, and it is electrically operated can individually to carry out charge and discharge.
Preferably, the pulse power is connected with charge-discharge control system, is controlled by the charge-discharge control system
The charge and discharge of each pulse power.
Preferably, the driving piece is anti-concave structure, and the driving piece covers on the formed punch, increases the driving
Induction section of the coil to the driving piece.
Preferably, further include fixed cell, the fixed cell include upper mounted plate above the blank holder and
Whole device is fixed for bottom plate below the cavity plate, the fixed cell.
Preferably, between the blank holder and fixed plate be equipped with bracing ring, the bracing ring with it is described solid
Fixed board matches, and whole device is fixed, and the second channel coaxial with the first passage, institute are equipped in the bracing ring
The internal diameter for stating second channel is more than or equal to the internal diameter of the first passage, and fixed plate lower surface is equipped with driving coil, institute
Driving coil is stated to be located at right above the punch-pin.
Preferably, the outer diameter of the formed punch is equal with the driving outer diameter of piece, makes in forming process, and the punch-pin can be whole
Body moves in the first passage described in the blank holder, the outer diameter phase of the internal diameter of first passage and the punch-pin in the blank holder
Deng, make the punch-pin when by electromagnetic force, it can only be axially movable.
Preferably, it is hollow structure inside the formed punch, under the premise of guaranteeing formed punch size, shape invariance, mitigates institute
The quality of punch-pin is stated, the speed of punch-pin described in forming process is improved, to improve material property, the formed punch is high intensity
Stainless steel material, to guarantee in forming process, the formed punch itself is unlikely to be damaged, the punch shape and the cavity plate
Match, when so that the plate to be formed being shaped to required shape, the plate mold after forming is good, the cavity of the cavity plate
Bottom is provided with gas vent, makes in the plate forming process to be formed, the intracorporal air of the chamber of the cavity plate is successfully led to
The gas vent discharge is crossed, the position that the plate end to be formed is contacted with the cavity plate and blank holder is evenly coated with lubrication
Agent promotes the plate end to be formed to institute to reduce the plate end to be formed friction in forming process
State cavity plate flowing.
A kind of manufacturing process of the plate forming device based on the load of multistage electromagnetic force timing, includes the following steps:
A) plate to be formed is placed on the cavity plate, the blank holder is located at pressure above the plate to be formed
State plate to be formed in residence；
B) start to shape, the driving coil for starting the top generates driving high-intensity magnetic field, and driving is generated in the driving piece
Electromagnetic force drives the punch-pin to move downward, and electromagnetic force will be driven to be transferred to the plate to be formed by the formed punch, makes institute
It states plate to be formed and starts intracavitary deformation to the cavity plate under the action of driving electromagnetic force；
C) the driving piece moves downward under the driving of driving electromagnetic force, when by next driving coil,
The driving coil generates driving high-intensity magnetic field, generates in the driving piece and drives electromagnetic force, drive the punch-pin continue to
Lower movement, and by the formed punch by drive electromagnetic force continue to be transferred to the plate to be formed, make the plate to be formed into
Intracavity forming of one step to the cavity plate；
D) the driving piece continues to move downward, it is every by a driving coil when, such as step C), recycle past
It is multiple, until the driving piece through a driving coil for being arranged in the blank holder bottom in first passage side wall
When, which generates driving high-intensity magnetic field, and driving electromagnetic force is generated in the driving piece, the punch-pin is driven to continue
It moves downward, and electromagnetic force will be driven to continue to be transferred to the plate to be formed by the formed punch, make the plate to be formed
Further to the intracavity forming of the cavity plate, until entire forming process terminates.
Preferably, it before starting forming, charges to all pulse powers, after charging complete, starts to shape, the charge and discharge
Electric control system carries out accurate timing control to each pulse power, makes in forming process, when the driving piece passes through downwards
When crossing any driving coil, the corresponding connected pulse power electric discharge of driving coil generates respective drive coil
The driving high-intensity magnetic field mutually cooperateed with is moved with the punch-pin, to generate driving electromagnetic force in the driving piece, is driven described convex
Mould continues to move downward, and electromagnetic force will be driven to be transferred to the plate to be formed by the formed punch, makes the plate to be formed
Part further shapes.
Compared with prior art, the present invention having the advantage that
1, by the shaping form of the cooperation control plate between punch-pin and cavity plate, the plate mold after forming is good；
2, the pulse electromagnetic power drive that punch-pin is generated by driving coil electric discharge, by driving piece and formed punch by pulse-electromagnetic force
It is transferred to plate to be formed, on the one hand, it is quasi-static stamping compared to traditional, have the characteristics that shaping rate is high；It is another
Aspect is applicable to the high-rate forming of the low conductivities metal material such as various metals material, especially stainless steel, overcomes biography
System electromagnetic forming technique is only applicable to the deficiency of high conductivity metal material forming, has more widened the application of electromagnetic forming technique
Range；
3, it using multiple drive power coil, successively generates in punch-pin in forming process and is mutually assisted with punch-pin movement from top to bottom
Same driving electromagnetic forces at different levels drive plate to be formed further to cavity plate intracavity forming, it can be achieved that the forming of biggish plate is deep
Degree；
4, above-mentioned driving coil at different levels is separately connected the mutually independent pulse power, by a set of charge-discharge control system,
Accurate timing control is carried out to the electric discharge of each pulse power, was discharged so that forming process successively carries out a wheel in each pulse power
It can terminate after journey, without the position of any one mobile driving coil, total time needed for forming process is shorter.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the plate forming device embodiment one based on the load of multistage electromagnetic force timing of the present invention
Figure；
Fig. 2 is that the top driving coil generates driving electromagnetic force in driving piece when forming process starts in embodiment one
Schematic diagram；
Fig. 3 is in embodiment one when driving piece to reach middle position driving coil position, and driving coil is driving
The schematic diagram of driving electromagnetic force is generated in piece；
Fig. 4 is in embodiment one when driving piece to reach lower section driving coil position, and driving coil is in driving piece
Generate the schematic diagram of driving electromagnetic force；
Fig. 5 is a kind of structural representation of the plate forming device embodiment two based on the load of multistage electromagnetic force timing of the present invention
Figure；
Fig. 6 is that the top driving coil generates driving electromagnetic force in driving piece when forming process starts in embodiment two
Schematic diagram；
Fig. 7 is driving coil discharge current waveform and sequential relationship schematic diagram in the embodiment of the present invention one and embodiment two；
Fig. 8 is connected the charge and discharge control principle of the pulse power by the embodiment of the present invention one with driving coil in embodiment two
Figure.
Each part numbers are as follows in figure:
Plate 1 to be formed, cavity plate 2, punch-pin 3, blank holder 4, first passage 5, formed punch 6, driving piece 7, driving coil 8, arteries and veins
Rush power supply 9, upper mounted plate 10, bottom plate 11, bracing ring 12, second channel 13, charge control module 14, control of discharge module
15。
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Embodiment one
As shown in Figure 1, a kind of plate forming device based on the load of multistage electromagnetic force timing, including it is located at plate to be formed
The cavity plate 2 of 1 lower section further includes the punch-pin 3 cooperated positioned at 1 top of plate to be formed with cavity plate 2, is equipped with above plate 1 to be formed
Blank holder 4, blank holder 4 is interior to be equipped with the first passage 5 moved for punch-pin 3, and punch-pin 3 includes the formed punch 6 cooperated with cavity plate 2 and fixes
Driving piece 7 above formed punch 6, driving piece 7 are anti-concave structure, and driving piece 7 covers on formed punch 6, first passage in blank holder 4
Three are successively arranged in 5 side walls from top to bottom and generates the driving coil 8 that driving high-intensity magnetic field driving driving piece 7 moves downward, each
Driving coil 8 is connected with the mutually independent pulse power 9, and the pulse power 9 is connected with charge-discharge control system.
In addition, further including fixed cell, fixed cell includes positioned at the upper mounted plate 10 of 4 top of blank holder and positioned at cavity plate
Whole device is fixed in forming process for the bottom plate 11 of 2 lower sections, fixed cell, and fixed cell can be hydraulic
Machine platform realizes the purpose that whole device is fixed by applying hydraulic coupling.
In the present embodiment, the outer diameter of formed punch 6 is equal with the driving outer diameter of piece 7, makes in forming process, punch-pin 3 can integrally exist
Moved in 4 first passage 5 of blank holder, the internal diameter of first passage 5 is equal with the outer diameter of punch-pin 3 in blank holder 4, make punch-pin 3 by
It when to electromagnetic force, can only be axially movable hollow structure inside formed punch 6, guarantee 6 size of formed punch, shape invariance
Under the premise of, mitigate the quality of punch-pin 3, improve the speed of forming process convex mould 3, to improve material property, formed punch 6 is height
Intensity stainless steel material, to guarantee in forming process, formed punch 6 itself is unlikely to be damaged, 6 shape of formed punch and 2 phase of cavity plate
Match, when so that plate to be formed 1 being shaped to required shape, the plate mold after forming is good, and the cavity bottom of cavity plate 2 is provided with row
Stomata makes in 1 forming process of plate to be formed, and the intracorporal air of the chamber of cavity plate 2 is able to be smoothly through gas vent discharge, at
The position that 1 end of shape plate is contacted with cavity plate 2 and blank holder 4 is evenly coated with lubricant, in forming process, reduce at
1 end friction of shape plate promotes 1 end of plate to be formed to flow to cavity plate 2.
In addition, being covered on formed punch 6 since driving piece 7 is anti-concave structure, so that when the driving coil 8 of driving 7 side of piece
When electric discharge, driving on piece 7 has wider Eddy Distribution range.
The present embodiment is in use, as shown in connection with fig. 2, when forming process starts, the driving piece 7 on punch-pin 3 is located at most upper
By square driving coil 8, the pulse power 9 being connected with the top driving coil 8 is passed through pulse current to corresponding driving coil 8,
Driving high-intensity magnetic field is generated around it, driving piece 7 generates vortex, the vortex and driving high-intensity magnetic field phase interaction in the case where driving high-intensity magnetic field
With generation driving electromagnetic force, active position are the side for driving piece 7 on driving piece 7, and direction is downward, make to drive the fortune downwards of piece 7
It is dynamic, and formed punch 6 is driven to move downward jointly, driving electromagnetic force is transmitted through formed punch 6, acts on plate 5 to be formed, plate to be formed
5 under the action of driving electromagnetic force, starts to the intracavitary deformation of cavity plate 2.
As shown in connection with fig. 3, when driving piece 7 by second driving coil 8 from top to bottom, it is connected with the driving coil 8
The pulse power 9 be passed through pulse current to the driving coil 8, driving high-intensity magnetic field is generated around it, driving piece 7 is driving strong magnetic
Vortex, the vortex and driving high-intensity magnetic field interaction are generated off field, driving electromagnetic force are generated on driving piece 7, active position is
The side of piece 7 is driven, direction is downward, makes that piece 7 is driven further to move downward, and formed punch 6 is driven to move downward jointly, driving electricity
Magnetic force is transmitted through formed punch 6, acts on plate 5 to be formed, and plate 5 to be formed makes plate to be formed under the action of driving electromagnetic force
Part 5 is further to the intracavitary deformation of cavity plate 2.
As shown in connection with fig. 4, when driving piece 7 by bottom driving coil 8, the pulse being connected with the driving coil 8 is electric
Source 9 is passed through pulse current to the driving coil 8, and driving high-intensity magnetic field is generated around it, and driving piece 7 is generated in the case where driving high-intensity magnetic field
Vortex, the vortex and driving high-intensity magnetic field interaction, generate driving electromagnetic force on driving piece 7, and active position is driving piece 7
Side, direction is downward, makes that piece 7 is driven further to move downward, and formed punch 6 is driven to move downward jointly, drives electromagnetic force through rushing
First 6 transmitting, acts on plate 5 to be formed, and plate 5 to be formed makes plate 5 to be formed further under the action of driving electromagnetic force
To the intracavitary deformation of cavity plate 2, until plate 5 to be formed is shaped to final required shape.
Embodiment two
As shown in figure 5, a kind of plate forming device based on the load of multistage electromagnetic force timing, including it is located at plate to be formed
The cavity plate 2 of 1 lower section further includes the punch-pin 3 cooperated positioned at 1 top of plate to be formed with cavity plate 2, is equipped with above plate 1 to be formed
Blank holder 4, blank holder 4 is interior to be equipped with the first passage 5 moved for punch-pin 3, and punch-pin 3 includes the formed punch 6 cooperated with cavity plate 2 and fixes
Driving piece 7 above formed punch 6, driving piece 7 are anti-concave structure, and driving piece 7 covers on formed punch 6, first passage in blank holder 4
Two are successively arranged in 5 side walls from top to bottom and generates the driving coil 8 that driving high-intensity magnetic field driving driving piece 7 moves downward, wherein
One driving coil 8 is located at 4 inner top side face of blank holder, and a driving coil 8 is located at 4 inside lower end face of blank holder, each drive
Moving winding 8 is connected with the mutually independent pulse power 9, and the pulse power 9 is connected with charge-discharge control system.
In addition, further including the fixed cell of fixed whole device, fixed cell includes the upper fixation positioned at 4 top of blank holder
Whole device is fixed in forming process for plate 10 and the bottom plate 11 below cavity plate 2, fixed cell, fixed
Unit can be hydraulic press platform, by applying hydraulic coupling, the purpose that whole device is fixed for realization.
What is different from the first embodiment is that bracing ring 12 is equipped between blank holder 4 and upper mounted plate 10 in the present embodiment,
The second channel 13 coaxial with first passage 5 is equipped in bracing ring 12, the internal diameter of second channel 13 is more than or equal to first passage 5
Internal diameter, 10 lower surface of upper mounted plate are equipped with driving coil 8, and driving coil 8 is located at right above punch-pin 3.
In the present embodiment, the outer diameter of formed punch 6 is equal with the driving outer diameter of piece 7, makes in forming process, punch-pin 3 can integrally exist
Moved in 4 first passage 5 of blank holder, the internal diameter of first passage 5 is equal with the outer diameter of punch-pin 3 in blank holder 4, make punch-pin 3 by
It when to electromagnetic force, can only be axially movable hollow structure inside formed punch 6, guarantee 6 size of formed punch, shape invariance
Under the premise of, mitigate the quality of punch-pin 3, improve the speed of forming process convex mould 3, to improve material property, formed punch 6 is height
Intensity stainless steel material, to guarantee in forming process, formed punch 6 itself is unlikely to be damaged, 6 shape of formed punch and 2 phase of cavity plate
Match, when so that plate to be formed 1 being shaped to required shape, the plate mold after forming is good, and the cavity bottom of cavity plate 2 is provided with row
Stomata makes in 1 forming process of plate to be formed, and the intracorporal air of the chamber of cavity plate 2 is able to be smoothly through gas vent discharge, at
The position that 1 end of shape plate is contacted with cavity plate 2 and blank holder 4 is evenly coated with lubricant, in forming process, reduce at
1 end friction of shape plate promotes 1 end of plate to be formed to flow to cavity plate 2.
In addition, being covered on formed punch 6 since driving piece 7 is anti-concave structure, so that when the volume of driving 7 upper end of piece or side
When driving coil 8 is discharged, driving on piece 7 has wider Eddy Distribution range.
The present embodiment is in use, as shown in connection with fig. 6, when forming process starts, driving piece 7 is located at 10 following table of upper mounted plate
The underface of driving coil 8 on face, the pulse power 9 being connected with the driving coil 8 are passed through pulse current to the driving coil 8,
Driving high-intensity magnetic field is generated around it, driving piece 7 generates vortex, the vortex and driving high-intensity magnetic field phase interaction in the case where driving high-intensity magnetic field
With generation driving electromagnetic force, active position are the top for driving piece 7 on driving piece 7, and direction is downward, make to drive the fortune downwards of piece 7
It is dynamic, and formed punch 6 is driven to move downward jointly, driving electromagnetic force is transmitted through formed punch 6, acts on plate 5 to be formed, plate to be formed
5 under the action of driving electromagnetic force, starts to the intracavitary deformation of cavity plate 2.
As shown in connection with fig. 3, when driving piece 7 to pass through the driving coil 8 for being located at 4 inner top side face of blank holder, with the driving
The connected pulse power 9 of coil 8 is passed through pulse current to the driving coil 8, and driving high-intensity magnetic field is generated around it, drives piece 7
Vortex, the vortex and driving high-intensity magnetic field interaction are generated in the case where driving high-intensity magnetic field, and driving electromagnetic force is generated on driving piece 7,
Active position is the side for driving piece 7, and direction is downward, makes that piece 7 is driven further to move downward, and drives formed punch 6 common downwards
Movement, driving electromagnetic force transmitted through formed punch 6, act on plate 5 to be formed, plate 5 to be formed under the action of driving electromagnetic force,
Make plate 5 to be formed further to the intracavitary deformation of cavity plate 2.
As shown in connection with fig. 4, when driving piece 7 to pass through the driving coil 8 for being located at 4 inside lower end face of blank holder, with the driving
The connected pulse power 9 of coil 8 is passed through pulse current to the driving coil 8, and driving high-intensity magnetic field is generated around it, drives piece 7
Vortex, the vortex and driving high-intensity magnetic field interaction are generated in the case where driving high-intensity magnetic field, and driving electromagnetic force is generated on driving piece 7,
Active position is the side for driving piece 7, and direction is downward, makes that piece 7 is driven further to move downward, and drives formed punch 6 common downwards
Movement, driving electromagnetic force transmitted through formed punch 6, act on plate 5 to be formed, plate 5 to be formed under the action of driving electromagnetic force,
Make plate 5 to be formed further to the intracavitary deformation of cavity plate 2, until plate 5 to be formed is shaped to final required shape.
Compared with embodiment one, in the present embodiment, on 10 lower surface of upper mounted plate driving coil 8 generate to driving piece 7
Driving electromagnetic force intensity it is higher, and in embodiment one, driving coil 8 is not necessarily to be fixed on the lower surface of upper mounted plate 11, can have
Effect avoids the transformation to hydraulic press table top, and does not need 12 structure of bracing ring, effectively reduces the complexity of device installation.
The manufacturing process of a kind of plate forming device based on the load of multistage electromagnetic force timing provided by the invention, in conjunction with reality
Example one or embodiment two are applied, after forming device is installed and fixed, is included the following steps:
A) plate 1 to be formed is placed on cavity plate 2, blank holder 4, which is located above plate 1 to be formed, pushes down plate to be formed
1；
B) start to shape (t as shown in Figure 71Moment), the driving coil 8 for starting the top generates driving high-intensity magnetic field, is driving
Driving electromagnetic force is generated in movable plate 7, driving punch-pin 3 moves downward, and electromagnetic force will be driven to be transferred to plate to be formed by formed punch 6
1, so that plate 1 to be formed is started the intracavitary deformation to cavity plate 2 under the action of driving electromagnetic force；
C) driving piece 7 moves downward under the driving of driving electromagnetic force, (such as Fig. 7 institute when by next driving coil 8
Show t2Moment), driving coil 8 generates driving high-intensity magnetic field, and driving electromagnetic force is generated in driving piece 7, and driving punch-pin 3 continues downwards
Movement, and electromagnetic force will be driven to continue to be transferred to plate 1 to be formed by formed punch 6, make plate 1 to be formed further to cavity plate 2
Intracavity forming；
D) driving piece 7 continues to move downward, (as shown in Figure 7 when driving a driving coil 8 of the piece 7 Jing Guo bottom
t3Moment), driving coil 8 generates driving high-intensity magnetic field, and driving electromagnetic force is generated in driving piece 7, and driving punch-pin 3 continues to transport downwards
It is dynamic, and electromagnetic force will be driven to continue to be transferred to plate 1 to be formed by formed punch 6, make plate 1 to be formed further to cavity plate 2
Intracavity forming, until entire forming process terminates.
In above-mentioned 1 forming step of plate to be formed, 8 discharge waveforms of driving coil at different levels and its sequential relationship as shown in fig. 7,
Wherein, the amplitude and pulsewidth of each current waveform are determined by relevant each 9 discharge parameter of the pulse power and 8 coiling parameter of each driving coil
It is fixed, it need to only guarantee to illustrate each electric discharge of driving coil 8 sequential relationship.
Each pulse power 9 is made of impulse capacitor, continuous current circuit and switching tube (can be thyristor), and by a set of
Charge-discharge control system is controlled, as shown in figure 8, the charge-discharge control system is by charge control module 14 and control of discharge mould
Block 15 forms, wherein charge control module 14 passes through control charge switch 14-1,14-2 and 14-3, respectively each pulse power 9
Impulse capacitor charging；Control of discharge module 15 realizes each pulse electricity by control discharge switch pipe 15-1,15-2 and 15-3
The accurate timing control that source 9 is discharged.Specifically:
t0Moment, charging process start, and charge control module 14 is simultaneously emitted by finger to charge switch 14-1,14-2 and 14-3
It enabling, 14-1,14-2 and 14-3 are closed, and each impulse capacitor starts to charge, when capacitor is charged to specified voltage, charging
The charge switch that control module 14 controls corresponding pulses power supply 9 disconnects；
t1Moment, forming process start, and control of discharge module 15 is issued to discharge switch pipe 15-1 and instructed, switching tube 15-1
Open-minded, the pulse power 9-1 connecting with the driving coil 8 of the top discharges to the driving coil 8 of the top；
t2Moment, driving piece 7 reach at the middle plane of middle position driving coil 8, and control of discharge module 15 is opened to electric discharge
It closes pipe 15-2 and issues instruction, switching tube 15-2 is open-minded, and the pulse power 9-2 connecting with middle position driving coil 8 is to interposition
Set the electric discharge of driving coil 8；
t3Moment, driving piece 7 reach at the middle plane of lower section driving coil 8, and control of discharge module 15 gives discharge switch pipe
15-3 issues instruction, and switching tube 15-3 is open-minded, and the pulse power 9-3 connecting with lower section driving coil 8 puts lower section driving coil 8
Electricity.
By above-mentioned accurate sequential control method, each pulse power 9 can be realized successively after a wheel electric discharge, plate to be formed
1 i.e. in the case where each driving electromagnetic force successively acts on, and is shaped to final required shape.
A kind of plate forming device and manufacturing process based on the load of multistage electromagnetic force timing of the present invention is not limited to reality
Three-level driving coil and power-supply system shown in example are applied, it, can be by driving coil 8 and its arteries and veins according to actual forming needs
It rushes power supply 9 and extends to the even higher series of level Four, Pyatyi.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of plate forming device based on the load of multistage electromagnetic force timing, recessed below plate to be formed (1) including being located at
Mould (2), it is characterised in that: further include the punch-pin (3) above the plate (1) to be formed with the cavity plate (2) cooperation, institute
It states and is equipped with blank holder (4) above plate to be formed (1), it is logical equipped with first for the punch-pin (3) movement in the blank holder (4)
Road (5), the punch-pin (3) include and the formed punch (6) of the cavity plate (2) cooperation and the driving being fixed on above the formed punch (6)
Piece (7) is successively arranged at least two generations driving high-intensity magnetic field in the blank holder (4) interior first passage (5) side wall from top to bottom
The driving coil (8) for driving driving piece (7) to move downward.
2. a kind of plate forming device based on the load of multistage electromagnetic force timing according to claim 1, it is characterised in that: every
A driving coil (8) is connected with the mutually independent pulse power (9).
3. a kind of plate forming device based on the load of multistage electromagnetic force timing according to claim 2, it is characterised in that: institute
The pulse power (9) is stated to be connected with charge-discharge control system.
4. a kind of plate forming device based on the load of multistage electromagnetic force timing according to claim 1, it is characterised in that: institute
Stating driving piece (7) is anti-concave structure, and the driving piece (7) is covered on the formed punch (6).
5. a kind of according to claim 1 or 2 or 3 or 4 plate forming devices based on the load of multistage electromagnetic force timing, special
Sign is: further including fixed cell, the fixed cell includes the upper mounted plate (10) and position above the blank holder (4)
Bottom plate (11) below the cavity plate (2).
6. a kind of plate forming device based on the load of multistage electromagnetic force timing according to claim 5, it is characterised in that: institute
State and be equipped with bracing ring (12) between blank holder (4) and fixed plate (10), be equipped in the bracing ring (12) with it is described
The internal diameter of the coaxial second channel (13) of first passage (5), the second channel (13) is more than or equal to the first passage (5)
Internal diameter, fixed plate (10) lower surface be equipped with driving coil (8), the driving coil (8) be located at the punch-pin (3) just on
Side.
7. a kind of plate forming device based on the load of multistage electromagnetic force timing according to claim 6, it is characterised in that: institute
The outer diameter for stating formed punch (6) is equal with the driving outer diameter of piece (7), the internal diameter of the interior first passage of the blank holder (4) (5) and institute
The outer diameter for stating punch-pin (3) is equal.
8. a kind of plate forming device based on the load of multistage electromagnetic force timing according to claim 7, it is characterised in that: institute
Stating is hollow structure inside formed punch (6), and the formed punch (6) is high-strength stainless steel material, formed punch (6) shape with it is described recessed
Mould (2) matches, and the cavity bottom of the cavity plate (2) is provided with gas vent, plate (1) end to be formed and the cavity plate
(2) and the position of blank holder (4) contact is evenly coated with lubricant.
9. a kind of manufacturing process of claim 1~8 plate forming device based on the load of multistage electromagnetic force timing, special
Sign is: including the following steps:
A) plate (1) to be formed is placed on the cavity plate (2), the blank holder (4) is located at the plate to be formed
(1) plate to be formed (1) is pushed down in top；
B) start to shape, the driving coil (8) for starting the top generates driving high-intensity magnetic field, and drive is generated in the driving piece (7)
Dynamic electromagnetic force, drives the punch-pin (3) to move downward, and electromagnetic force will be driven to be transferred to by the formed punch (6) described to be formed
Plate (1) makes the plate to be formed (1) start the intracavitary deformation to the cavity plate (2) under the action of driving electromagnetic force；
C) driving piece (7) moves downward under the driving of driving electromagnetic force, when by next driving coil (8)
When, which generates driving high-intensity magnetic field, and driving electromagnetic force is generated in the driving piece (7), is driven described convex
Mould (3) continues to move downward, and electromagnetic force will be driven to continue to be transferred to the plate to be formed (1) by the formed punch (6), makes
The plate to be formed (1) is further to the intracavity forming of the cavity plate (2)；
D) the driving piece (7) continues to move downward, it is every by driving coil (8) when, such as step C), circulation
Back and forth, until driving piece (7) process is arranged in one of bottom in the blank holder (4) interior first passage (5) side wall
When driving coil (8), which generates driving high-intensity magnetic field, and driving electricity is generated in the driving piece (7)
Magnetic force drives the punch-pin (3) to continue to move downward, and by the formed punch (6) will drive electromagnetic force continue to be transferred to it is described
Plate (1) to be formed makes the plate to be formed (1) further to the intracavity forming of the cavity plate (2), until entirely shaping
Journey terminates.
10. a kind of manufacturing process of the plate forming device based on the load of multistage electromagnetic force timing according to claim 9,
It is characterized in that: before starting forming, charging to all pulse powers (9), after charging complete, start to shape, the charge and discharge
Control system carries out accurate timing control to each pulse power (9), makes in forming process, when the driving piece (7) to
When any driving coil (8) of lower process, the corresponding connected pulse power of the driving coil (8) (9) electric discharge makes corresponding
Driving coil (8), which is generated, moves the driving high-intensity magnetic field mutually cooperateed with the punch-pin (3), to generate in the driving piece (7)
Electromagnetic force is driven, the punch-pin (3) is driven to continue to move downward, and electromagnetic force will be driven to be transferred to institute by the formed punch (6)
Plate to be formed (1) is stated, shapes the plate to be formed (1) further.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398493.3A CN109482705B (en) | 2018-11-22 | 2018-11-22 | Plate forming device and method based on multistage electromagnetic force time sequence loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398493.3A CN109482705B (en) | 2018-11-22 | 2018-11-22 | Plate forming device and method based on multistage electromagnetic force time sequence loading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109482705A true CN109482705A (en) | 2019-03-19 |
| CN109482705B CN109482705B (en) | 2020-09-18 |
Family
ID=65697409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811398493.3A Active CN109482705B (en) | 2018-11-22 | 2018-11-22 | Plate forming device and method based on multistage electromagnetic force time sequence loading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109482705B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451353A (en) * | 2020-03-27 | 2020-07-28 | 中南大学 | Electromagnetic forming device for forming fluid impact plate and forming method thereof |
| CN112775257A (en) * | 2020-12-14 | 2021-05-11 | 三峡大学 | Plate embossing forming device and method based on pulse electromagnetic force |
| CN114472667A (en) * | 2020-11-11 | 2022-05-13 | 湖北汽车工业学院 | Electromagnetic forming device based on flexible medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011121083A (en) * | 2009-12-09 | 2011-06-23 | Kobe Steel Ltd | Inductor for electromagnetically expanding and forming tube, and method for manufacturing the same |
| CN102248059A (en) * | 2011-06-16 | 2011-11-23 | 华中科技大学 | Multistage and multidirectional electromagnetic forming method and device |
| 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 |
| CN103894468A (en) * | 2014-04-02 | 2014-07-02 | 华中科技大学 | Material fluidity control method for metal plate forming |
| CN206550190U (en) * | 2017-03-07 | 2017-10-13 | 华中科技大学 | A kind of electromagnetism Deep forming device |
-
2018
- 2018-11-22 CN CN201811398493.3A patent/CN109482705B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011121083A (en) * | 2009-12-09 | 2011-06-23 | Kobe Steel Ltd | Inductor for electromagnetically expanding and forming tube, and method for manufacturing the same |
| CN102248059A (en) * | 2011-06-16 | 2011-11-23 | 华中科技大学 | Multistage and multidirectional electromagnetic forming method and device |
| 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 |
| CN103894468A (en) * | 2014-04-02 | 2014-07-02 | 华中科技大学 | Material fluidity control method for metal plate forming |
| CN206550190U (en) * | 2017-03-07 | 2017-10-13 | 华中科技大学 | A kind of electromagnetism Deep forming device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451353A (en) * | 2020-03-27 | 2020-07-28 | 中南大学 | Electromagnetic forming device for forming fluid impact plate and forming method thereof |
| CN114472667A (en) * | 2020-11-11 | 2022-05-13 | 湖北汽车工业学院 | Electromagnetic forming device based on flexible medium |
| CN112775257A (en) * | 2020-12-14 | 2021-05-11 | 三峡大学 | Plate embossing forming device and method based on pulse electromagnetic force |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109482705B (en) | 2020-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107186039B (en) | A kind of device and method improving electro-magnetic forming workpiece mold | |
| CN109482705A (en) | A kind of plate forming device and manufacturing process based on the load of multistage electromagnetic force timing | |
| CN106825192B (en) | A kind of electromagnetism Deep forming device and method | |
| CN103586325B (en) | A kind of deep drawing quality component electromagnetic forming method | |
| CN102125951B (en) | Method and device for laser pulse and electromagnetic pulse composite forming of metal sheet | |
| CN107584001B (en) | Electromagnetic forming method and device for metal plate | |
| CN206731895U (en) | A kind of device for improving electro-magnetic forming workpiece patch mould | |
| CN104353718B (en) | A kind of sheet material bag draws the method for building mortion and shaping | |
| CN107138591B (en) | Electromagnetic forming device and method for cylindrical part fillet | |
| CN103894468A (en) | Material fluidity control method for metal plate forming | |
| CN107138589B (en) | Plate hole flanging forming device and forming method | |
| CN104475531B (en) | A kind of sheet metal electromagnetic pulse local flow progressive molding device and method | |
| CN204262135U (en) | A kind of sheet metal electromagnetic pulse local flow progressive molding device | |
| CN105127284B (en) | Hierarchically-controlled electromagnetic incremental forming method | |
| CN107139517A (en) | A kind of drawing and forming device and method of the non-axisymmetric parts of difficult-to-deformation material | |
| CN109590405B (en) | Aluminum alloy battery box composite forming device | |
| CN101607286A (en) | Aluminum alloy curved part electromagnetic compound forming method and device | |
| CN206550190U (en) | A kind of electromagnetism Deep forming device | |
| CN203459493U (en) | Electromagnetic pulse boosting type progressive drawing forming device | |
| CN207266988U (en) | A kind of electromagnetic forming device of metal sheet | |
| CN102941253B (en) | Component assembly method and device based on electromagnetic auxiliary forming | |
| CN207577198U (en) | A kind of non-contact flaring of pipe fitting that need not be placed in inside pipe fitting or hemmer | |
| CN108057769A (en) | Method of the punching press part rebound complex-curved with magnetic pulse formation Collaborative Control with rupture | |
| CN202412607U (en) | Injection mould of silicone rubber tube | |
| CN107096815B (en) | A kind of the pipe fitting electromagnetism hemmer and method of radial-axial electromagnetic force timesharing load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |