CN107116128B - A kind of the plate electromagnetism hemmer and method of axial direction-radial electromagnetic force timesharing load - Google Patents
A kind of the plate electromagnetism hemmer and method of axial direction-radial electromagnetic force timesharing load Download PDFInfo
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- CN107116128B CN107116128B CN201710414348.9A CN201710414348A CN107116128B CN 107116128 B CN107116128 B CN 107116128B CN 201710414348 A CN201710414348 A CN 201710414348A CN 107116128 B CN107116128 B CN 107116128B
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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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- 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
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Abstract
A kind of the plate electromagnetism hemmer and method of axial direction-radial electromagnetic force timesharing load, it include: axial electromagnetic force loading coil, radial electromagnetic force loading coil, flanging, cavity plate, capacitor power, axial electromagnetic force loading coil is 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, and cavity plate is placed on flange workpiece；Radial electromagnetic force loading coil and freewheeling diode differential concatenation, then in parallel with axial electromagnetic force loading coil, capacitor power is the coil power supply connected by discharge switch.The plate electromagnetism flange that the present invention is loaded using the timesharing of axial direction-radial electromagnetic force for more existing electromagnetism flange, is loaded by substep timesharing, can effectively improve the pad pasting of flange workpiece.Meanwhile the present invention can simply and effectively realize timesharing load axial electromagnetic force and radial electromagnetic force, device is easy to operate, at low cost using " radial electromagnetic force loading coil and freewheeling diode differential concatenation, then in parallel with axial electromagnetic force loading coil ".
Description
Technical field
The invention belongs to metal forming manufacturing field, in particular to a kind of axial direction-radial electromagnetic force timesharing load plate
Electromagnetism hemmer and method are mainly used for the flange processing of metal sheet.
Background technique
Lightweight is the important technical that energy-saving and emission-reduction are realized in the fields such as aerospace, auto industry.And realize light weight
The main path of change is using light alloy material, and high-performance aluminium alloy, titanium alloy, magnesium alloy become modern aerospace, vapour
Turner industry etc. realizes light-weighted preferred material；Electro-magnetic forming is a kind of high-speed pulse shaping technique, can greatly improve metal
Material property is one of the effective means for solving light alloy forming difficulty.
In existing plate electromagnetism turn-up process, the driving coil only relied on positioned at side surface of workpiece provides axial electromagnetic force, at
Discharge voltage needed for shape is high, and pad pasting hardly results in guarantee.
Electromagnetism flange is one kind of electromagnetic forming technique, the axial electromagnetic force provided at present by driving coil, pad pasting
Difference.Document " large complicated type face aluminium alloy flange part electro-magnetic forming Plastic Flow behavioral study (mechanical engineering journal, Vol.
49, No. 24,2013) " using the plate Plastic Flow behavior under 1 layer, 2 layers and 3 layers plate coil electromagnetism flange, hair
The flange effect of existing 3 layers of plate coil is best, but still the effect of not up to complete pad pasting；To find out its cause, lattice coil only increases
Big axial electromagnetic force and do not provide radial electromagnetic force for flange workpiece.Chinese patent " a kind of electromagnetic drive forming method and
Device (102248693 A of CN) " discloses a kind of electromagnetic drive forming method and device, compound using pulse electromagnetic power drive
Formed punch fast ram workpiece can make workpiece and cavity plate pad pasting high, however the invention is not pure by electromagnetic force forming, and
It is to transmit electromagnetic force by compound punch, needs punch-pin and cavity plate to cooperate, and shaping rate is substantially reduced.
Summary of the invention
For this purpose, the present invention provides a kind of axial direction-radial direction electromagnetism effectively to solve the problems, such as that current electromagnetism flange pad pasting is poor
The plate electromagnetism hemmer and method of power timesharing load, the plate electromagnetism flange loaded using axial direction-radial electromagnetic force timesharing,
It for more existing electromagnetism flange, is loaded by substep timesharing, the pad pasting of flange workpiece can be effectively improved.Meanwhile the present invention adopts
It, can letter with " radial electromagnetic force loading coil and freewheeling diode differential concatenation, then in parallel with axial electromagnetic force loading coil "
Timesharing load axial electromagnetic force and radial electromagnetic force are singly effectively realized, device is easy to operate, at low cost.
The technical scheme adopted by the invention is as follows:
A kind of plate electromagnetism hemmer of axial direction-radial electromagnetic force timesharing load, comprising:
Axial electromagnetic force loading coil provides axial electromagnetic force for the flange workpiece of initial profile；
Radial electromagnetic force loading coil provides radial electromagnetic force for the flange workpiece after axial electromagnetic force load；
Flanging；
Cavity plate；
With the freewheeling diode of radial electromagnetic force loading coil differential concatenation；
Capacitor power provides energy for axial electromagnetic force loading coil and radial electromagnetic force loading coil.
Axial electromagnetic force loading coil is placed within flanging, and flange workpiece is placed in axial electromagnetic force loading coil and flanging
Upper surface, radial electromagnetic force loading coil are placed in the inner hole of flange workpiece, and cavity plate is placed on flange workpiece；
Radial electromagnetic force loading coil and freewheeling diode differential concatenation, it is then in parallel with axial electromagnetic force loading coil,
Capacitor power is the coil power supply connected by discharge switch.
The radial electromagnetic force loading coil is hollow cylinder or hollow round table shape.
The height of the radial electromagnetic force loading coil is equal to the flange height of flange workpiece.
The overall diameter of hollow cylinder radial electromagnetic force loading coil or hollow round table shape radial electromagnetic force loading coil compared with
Small overall diameter, equal to the flange thickness of workpiece that flange inner hole of workpiece diameter subtracts twice.
A kind of axial direction of the present invention-radial electromagnetic force timesharing load plate electromagnetism hemmer and method, advantage are:
1. the present invention realizes the plate electromagnetism flange of axial direction-radial electromagnetic force timesharing load, for more traditional flange, electricity
Magnetic forming forming speed is fast, can promote the material forming limit.
2. the plate electromagnetism flange that the present invention is loaded using the timesharing of axial direction-radial electromagnetic force, for more existing electromagnetism flange,
It is loaded by substep timesharing, the pad pasting of flange workpiece can be effectively improved.
3. the present invention using " radial electromagnetic force loading coil and freewheeling diode differential concatenation, then with axial electromagnetic force
Loading coil is in parallel ", it can simply and effectively realize timesharing load axial electromagnetic force and radial electromagnetic force, device is easy to operate, at
This is low.
Detailed description of the invention
Fig. 1 is the plate electromagnetism hemmer assembling schematic diagram of axial direction-radial electromagnetic force timesharing load；
Fig. 1 (a) is the plate electromagnetism hemmer assembling schematic diagram of axial direction-radial electromagnetic force timesharing load；
Fig. 1 (b) is that the plate electromagnetism hemmer of axial direction-radial electromagnetic force timesharing load assembles diagrammatic cross-section.
Fig. 2 is axial direction-radial electromagnetic force timesharing load plate using hollow round table shape radial electromagnetic force loading coil
Electromagnetism hemmer assembling schematic diagram；
Fig. 2 (a) is axial direction-radial electromagnetic force timesharing load plate using hollow round table shape radial electromagnetic force loading coil
Part electromagnetism hemmer assembling schematic diagram；
Fig. 2 (b) is axial direction-radial electromagnetic force timesharing load plate using hollow round table shape radial electromagnetic force loading coil
Part electromagnetism hemmer assembles diagrammatic cross-section.
Fig. 3 is the plate electromagnetism method for flanging circuit connection and pulse current signal of axial direction-radial electromagnetic force timesharing load
Figure；
Fig. 3 (a) is the plate electromagnetism method for flanging circuit connection schematic diagram of axial direction-radial electromagnetic force timesharing load；
The plate electromagnetism method for flanging pulse current schematic diagram of Fig. 3 (b) axial direction-radial electromagnetic force timesharing load.
Fig. 4 is the flange workpiece and its distribution of electromagnetic force schematic diagram of different phase；
Fig. 4 (a) is the flange workpiece of initial profile and its axial electromagnetic force schematic diagram that is subject to；
Fig. 4 (b) is the flange workpiece after axial electromagnetic force load and its radial electromagnetic force schematic diagram being subject to；
Fig. 4 (c) is the flange workpiece schematic diagram after radial electromagnetic force load.
Wherein: 1. axial electromagnetic force loading coils；2. radial electromagnetic force loading coil；3. flange workpiece；31. initial wheel
Wide flange workpiece；32. the flange workpiece after axial electromagnetic force load；33. the flange workpiece after radial electromagnetic force load；4.
Cavity plate；5. flanging；6. freewheeling diode；7. capacitor power；8. pulse current；81. the arteries and veins of axial electromagnetic force loading coil
Rush electric current；82. the pulse current of radial electromagnetic force loading coil；9. electromagnetic force；91. axial electromagnetic force；92. radial electromagnetism
Power.
Specific embodiment
A kind of plate electromagnetism hemmer of axial direction-radial electromagnetic force timesharing load, comprising:
Axial electromagnetic force loading coil 1 provides axial electromagnetic force for the flange workpiece 31 of initial profile；
Radial electromagnetic force loading coil 2 provides radial electromagnetic force for the flange workpiece 32 after axial electromagnetic force load；
Flanging 5；
Cavity plate 4；
With the freewheeling diode 6 of 2 differential concatenation of radial electromagnetic force loading coil；
Capacitor power 7 provides energy for axial electromagnetic force loading coil 1 and radial electromagnetic force loading coil 2.
Axial electromagnetic force loading coil 1 is placed within flanging 5, and flange workpiece is placed in axial electromagnetic force loading coil 1 and pressure
The upper surface on side 5, radial electromagnetic force loading coil 2 are placed in the inner hole of flange workpiece, and cavity plate 4 is placed on flange workpiece；
Radial electromagnetic force loading coil 2 and 6 differential concatenation of freewheeling diode, then simultaneously with axial electromagnetic force loading coil 1
Connection, capacitor power 7 is the coil power supply connected by discharge switch.
Radial electromagnetic force loading coil 2 is that hollow cylinder is mainly simple possible, is then cooperation work for hollow round table shape
The shape of part deformation, keeps the spacing between workpiece and coil smaller, reaches the higher purpose of coupling efficiency.
The flange height that the height of radial electromagnetic force loading coil 2 is equal to flange workpiece can make radial electromagnetic force generation efficiency
It is high.
The overall diameter of hollow cylinder radial electromagnetic force loading coil or hollow round table shape radial electromagnetic force loading coil compared with
Small overall diameter is to send out in deformation process in order to prevent equal to the flange thickness of workpiece that flange inner hole of workpiece diameter subtracts twice
Raw geometrical interference.
A kind of plate electromagnetism method for flanging of axial direction-radial electromagnetic force timesharing load, comprising the following steps:
First, axial electromagnetic force loading coil 1 is placed within flanging 5, and guarantee that its upper surface flushes, by flange workpiece
It is placed in the upper surface of axial electromagnetic force loading coil 1 Yu flanging 5, radial electromagnetic force loading coil 2 is placed in flange workpiece
Kong Zhong, and flush the lesser one end of 2 outer diameter of radial electromagnetic force loading coil with the lower surface of flange workpiece, cavity plate 4 is placed in
On workpiece；
Second, then radial electromagnetic force loading coil 2 and 6 differential concatenation of freewheeling diode are loaded with axial electromagnetic force
Coil 1 is in parallel, and capacitor power 7 is the coil power supply connected by discharge switch；
Third is closed discharge switch, and capacitor power 7 first discharges to axial electromagnetic force loading coil 1, generates axial magnetic
The pulse current of power loading coil 1, pulse current generate inductive loop, pulse current and sense in the flange workpiece of initial profile
Vortex interaction is answered, axial magnetic power drive flange workpiece is generated and accelerates and deform, the flange workpiece of initial profile is deformed into
Flange workpiece after axial electromagnetic force load；
4th, when 7 voltage of capacitor power is 0, freewheeling diode 6 is connected automatically, generates radial electromagnetic force loading coil 2
Pulse current, pulse current generates inductive loop in the flange workpiece after axial electromagnetic force load, pulse current and induction
Vortex interaction generates radial electromagnetic force driving flange workpiece and accelerates and deform, the flange workpiece after axial electromagnetic force load
Flange workpiece after being deformed into radial electromagnetic force load, completes flange processing.
The pulse current of axial electromagnetic force loading coil 1 effective load time is first half-wave, from 0 to t1 moment；Diameter
It is second half-wave, the moment from t1 to t2 to pulse current effective load time of electromagnetic force loading coil 2.Realize point of load
When, the workpiece for starting state needs to load axial electromagnetic force, therefore when the pulse current of axial electromagnetic force loading coil 1 effectively loads
Between be first half-wave, from 0 to t1 moment；Flange workpiece after axial electromagnetic force load needs to load radial electromagnetic force, therefore diameter
It is second half-wave, the moment from t1 to t2 to pulse current effective load time of electromagnetic force loading coil 2.
Axial electromagnetic force makes flange workpiece be deformed into the flange workpiece profile after axial electromagnetic force load by initial profile；
Radial electromagnetic force, after the flange workpiece profile after loading flange workpiece by axial electromagnetic force is deformed into radial electromagnetic force load
Flange workpiece profile.Workpiece flange can be analyzed to axial deformation and radial expanding two processes, so the present invention is added using timesharing
Flange efficiency can be effectively improved by carrying axial electromagnetic force and radial electromagnetic force realization.Therefore make flange workpiece by first using axial electromagnetic force
Beginning profile is deformed into the flange workpiece profile after axial electromagnetic force load；Make flange workpiece by axial magnetic using radial electromagnetic force
Flange workpiece profile after power load is deformed into the flange workpiece profile after radial electromagnetic force load.
Embodiment 1:
Hollow cylinder radial electromagnetic force loading coil is used as shown in Figure 1, and specific steps include: step 1, will be axial
Electromagnetic force loading coil is placed within flanging, and guarantees that its upper surface flushes, and flange workpiece is placed in axial electromagnetic force loaded line
The upper surface of circle and flanging, hollow cylinder radial electromagnetic force loading coil is placed in the inner hole of flange workpiece, and make radial direction
One end of electromagnetic force loading coil is flushed with the lower surface of flange workpiece, and cavity plate is placed on workpiece；Second, such as Fig. 3 (a) institute
Show, then in parallel with axial electromagnetic force loading coil by radial electromagnetic force loading coil and freewheeling diode differential concatenation, capacitor
Power supply is the coil power supply connected by discharge switch；Third is closed discharge switch, and capacitor power is first to axial electromagnetic force
Loading coil electric discharge, generates the pulse current of axial electromagnetic force loading coil, as shown in Figure 3 (b), pulse current is in initial profile
Flange workpiece in generate inductive loop, pulse current and inductive loop interaction generate axial magnetic power drive flange workpiece
Accelerate and deform, the flange workpiece of initial profile is deformed into the flange workpiece after axial electromagnetic force load, as shown in Figure 4 (b)；The
Four, when capacitor power voltage is 0, freewheeling diode is connected automatically, generates the pulse current of radial electromagnetic force loading coil, such as
Shown in Fig. 3 (b), pulse current generates inductive loop, pulse current and induction in the flange workpiece after axial electromagnetic force load
Vortex interaction generates radial electromagnetic force driving flange workpiece and accelerates and deform, and the flange workpiece after axial electromagnetic force load becomes
Shape is that the flange workpiece after radial electromagnetic force load completes flange processing as shown in Figure 4 (c).
Embodiment 2:
Hollow round table shape radial electromagnetic force loading coil is used as shown in Figure 2, and specific steps include: step 1, will be axial
Electromagnetic force loading coil is placed within flanging, and guarantees that its upper surface flushes, and flange workpiece is placed in axial electromagnetic force loaded line
The upper surface of circle and flanging, hollow round table shape radial electromagnetic force loading coil is placed in the inner hole of flange workpiece, and is made hollow
The lesser one end of truncated cone-shaped radial electromagnetic force loading coil outer diameter is flushed with the lower surface of flange workpiece, by cavity plate be placed in workpiece it
On；Second, as shown in Fig. 3 (a), by 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；Third is closed discharge switch, capacitor
Power supply first discharges to axial electromagnetic force loading coil, the pulse current of axial electromagnetic force loading coil is generated, such as Fig. 3 (b) institute
Show, pulse current generates inductive loop in the flange workpiece of initial profile, and pulse current and inductive loop interaction generate
Axial magnetic power drive flange workpiece accelerates and deforms, and the flange workpiece of initial profile is deformed into turning over after axial electromagnetic force loads
Side workpiece, as shown in Figure 4 (b)；4th, when capacitor power voltage is 0, freewheeling diode is connected automatically, generates radial electromagnetism
The pulse current of power loading coil, as shown in Figure 3 (b), pulse current generate in the flange workpiece after axial electromagnetic force load
Inductive loop, pulse current accelerates and deforms with inductive loop interaction generation radial electromagnetic force driving flange workpiece, axial
Flange workpiece after electromagnetic force load is deformed into the flange workpiece after radial electromagnetic force load, as shown in Figure 4 (c), completes flange
Processing.
Claims (5)
1. a kind of axial direction-radial electromagnetic force timesharing load plate electromagnetism hemmer, it is characterised in that: include:
Axial electromagnetic force loading coil (1) is that the flange workpiece (31) of initial profile provides axial electromagnetic force；
Radial electromagnetic force loading coil (2) provides radial electromagnetic force for the flange workpiece (32) after axial electromagnetic force load；
Flanging (5)；
Cavity plate (4)；
With the freewheeling diode (6) of radial electromagnetic force loading coil (2) differential concatenation；
Capacitor power (7), is axial electromagnetic force loading coil (1) and radial electromagnetic force loading coil (2) provides energy；
Axial electromagnetic force loading coil (1) is placed within flanging (5), flange workpiece be placed in axial electromagnetic force loading coil (1) with
The upper surface of flanging (5), radial electromagnetic force loading coil (2) are placed in the inner hole of flange workpiece, and cavity plate (4) is placed in flange workpiece
On；
Radial electromagnetic force loading coil (2) and freewheeling diode (6) differential concatenation, then with axial electromagnetic force loading coil (1)
Parallel connection, capacitor power (7) are the coil power supply connected by discharge switch.
2. a kind of axial direction according to claim 1-radial electromagnetic force timesharing load plate electromagnetism hemmer, feature
Be: the radial electromagnetic force loading coil (2) is hollow cylinder or hollow round table shape.
3. a kind of axial direction according to claim 1-radial electromagnetic force timesharing load plate electromagnetism hemmer, feature
Be: the height of the radial electromagnetic force loading coil (2) is equal to the flange height of flange workpiece.
4. axial direction-radial electromagnetic force timesharing using plate electromagnetism hemmer as claimed in any one of claims 1-3 adds
The plate electromagnetism method for flanging of load, it is characterised in that the following steps are included:
First, axial electromagnetic force loading coil (1) is placed within flanging (5), and guarantee axial electromagnetic force loading coil (1)
Upper surface, flanging (5) upper surface flush, flange workpiece is placed in the upper table of axial electromagnetic force loading coil (1) Yu flanging (5)
Radial electromagnetic force loading coil (2) is placed in the inner hole of flange workpiece by face, and makes radial electromagnetic force loading coil (2) outer diameter
Lesser one end is flushed with the lower surface of flange workpiece, and cavity plate (4) is placed on workpiece；
Second, then radial electromagnetic force loading coil (2) and freewheeling diode (6) differential concatenation are loaded with axial electromagnetic force
Coil (1) is in parallel, and capacitor power (7) is the coil power supply connected by discharge switch；
Third is closed discharge switch, and capacitor power (7) first discharges to axial electromagnetic force loading coil (1), generates axial magnetic
The pulse current of power loading coil (1), pulse current generate inductive loop in the flange workpiece of initial profile, pulse current with
Inductive loop interaction generates axial magnetic power drive flange workpiece and accelerates and deform, the flange workpiece deformation of initial profile
For the flange workpiece after axial electromagnetic force load；
4th, when capacitor power (7) voltage is 0, freewheeling diode (6) is connected automatically, generates radial electromagnetic force loading coil
(2) pulse current, pulse current generate inductive loop, pulse current and sense in the flange workpiece after axial electromagnetic force load
Vortex interaction is answered, radial electromagnetic force driving flange workpiece is generated and accelerates and deform, the flange work after axial electromagnetic force load
Part is deformed into the flange workpiece after radial electromagnetic force load, completes flange processing.
5. axial direction according to claim 4-radial electromagnetic force timesharing load plate electromagnetism method for flanging, feature exist
In: pulse current effective load time of axial electromagnetic force loading coil (1) is first half-wave, from 0 to t1 moment；Radial electricity
Pulse current effective load time of magnetic force loading coil (2) is second half-wave, the moment from t1 to t2.
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| CN108405699A (en) * | 2018-04-02 | 2018-08-17 | 三峡大学 | A kind of the plate electromagnetism hemmer and method of vertical repulsive force-radial direction suction timesharing load |
| CN111468585B (en) * | 2020-04-13 | 2021-08-24 | 三峡大学 | Simulation-based pipe fitting bulging analysis and control method for separating axial electromagnetic force |
| CN111468586B (en) * | 2020-04-13 | 2022-04-08 | 三峡大学 | Electromagnetic bulging device and method for pipe fitting based on concave coil group |
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Application publication date: 20170901 Assignee: Hubei Feiou Commercial Management Co.,Ltd. Assignor: CHINA THREE GORGES University Contract record no.: X2023980045280 Denomination of invention: A plate electromagnetic flanging device and method for time-sharing axial radial electromagnetic force loading Granted publication date: 20190924 License type: Common License Record date: 20231102 |