CN107774780A - A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging and device - Google Patents
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging and device Download PDFInfo
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- CN107774780A CN107774780A CN201711093218.6A CN201711093218A CN107774780A CN 107774780 A CN107774780 A CN 107774780A CN 201711093218 A CN201711093218 A CN 201711093218A CN 107774780 A CN107774780 A CN 107774780A
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 82
- 239000002184 metal Substances 0.000 claims abstract description 82
- 230000001939 inductive effect Effects 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims description 8
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- 230000005611 electricity Effects 0.000 claims description 3
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- 238000007493 shaping process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
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- 239000011248 coating agent Substances 0.000 description 1
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- 239000013604 expression vector Substances 0.000 description 1
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- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- 210000003462 vein Anatomy 0.000 description 1
Classifications
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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
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
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Abstract
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging and device, including：Interior loop, to treat that the metal tube end regions of flange provide inductive loop；Exterior loop, to treat that the metal tube end regions of flange provide axial background magnetic field；Flanging die, control the flange height of flange metal tube；Coil power supply power-supply system, energy is provided for interior loop, exterior loop.The present invention can provide a kind of non-contact radial electromagnetic force from pipe fitting end loading for metal tube flange enlarging, realize the non-contact flange expanding of miniature or special piece, improve component shaping performance.
Description
Technical field
The invention belongs to intermetallic composite coating manufacturing field, more particularly to a kind of non-contact expansion of pipe fitting that need not be placed in inside pipe fitting
Mouth or method for flanging and device, it is mainly used in enlarging or the flange processing of metal tube.
Background technology
In the flange of conventional metals pipe fitting or enlarging, apply mechanical force or hydraulic coupling, driving generally inside metal tube
Pipe fitting realizes flange enlarging.On the one hand, because above-mentioned plastic force is contact force so that flexible workpiece is low after shaping, residual stress
Greatly, resilience is also easy to produce, for light metal alloys such as aluminium alloy, magnesium alloys, mechanical force shaping can also be such that workpiece easily ruptures.
On the other hand, the application of contact force needs medium, and the medium must be placed in inside pipe fitting, to pipe shape, size and space
There is larger limitation position.Such as：Miniature or special piece, it is then very difficult that force medium is placed in inside pipe fitting.Simultaneously
Existing non-contact flange enlarging technology, rely primarily on form-wound coil and produce radial electromagnetic force to realize pipe fitting flange enlarging.The party
Though method can effectively realize electromagnetism flange, form-wound coil must still be placed in inside pipe fitting.Design and coiling all bands to form-wound coil
Huge limitation is carried out, therefore can not also solve that force medium can not be placed in miniature or special piece so as to realize that flange expands
The problem of mouth.
The flange enlarging of metal tube is common processing technology in the industry.Traditional flange enlarging technique uses punch-pin more
The multiple working procedures such as expansion, pressing complete metal tube flange, and technique is cumbersome, while multiple plastic deformation is also easy to produce processing and hardened,
Reduce the forming limit of metal tube.
The current mechanical force for mainly taking contact realizes the flange enlarging of pipe fitting, the A of Chinese patent CN 104741466
" a kind of bell-mouthed process equipment of metal tube " provides a kind of bell-mouthed process equipment of metal tube, greatly reduces process equipment
Part, an enlarging drift can complete flange, expand stomatoplastic process so that manufacturing procedure shortens, and production efficiency is significantly
Improve, reduce fraction defective.But formed flexible is low, residual stress is big, easy resilience.Can have using non-contacting pulse-electromagnetic force
Effect improves disadvantages mentioned above, and pulse-electromagnetic force is a kind of contactless force based on electromagnetic induction principle, can effectively be changed compared to mechanical force
The forming property of kind metal material, reduces the workpiece resilience after shaping, improves the material forming limit.Chinese patent (CN
104874664 A) " a kind of alloy pipe fitting Electromagnetic bulging and flange synchronous forming device and method ", disclose a kind of alloy pipe fitting
Electromagnetic bulging and flange synchronous forming device and method, realize alloy pipe fitting Electromagnetic bulging and flange synchronous forming, reduce
Workpiece resilience, reduce Making mold difficulty.But either conventional machining process, or above-mentioned Electro Magnetic Forming technology, its core
Defect is that force medium all must completely or partially be placed in inside pipe fitting, and its structure and position are all restricted by pipe fitting physical dimension,
It is difficult to solve the problems, such as miniature or special piece flange enlarging.
The core shortcoming of prior art is that force medium must be placed in inside pipe fitting.For tradition machinery processing technology, go back
Deposit that flexible workpiece after forming is low, and residual stress is big, the defects of being also easy to produce resilience.And the electromagnetism flange enlarging side proposed at present
Case, though improving component shaping performance to a certain extent, its form-wound coil is still necessary to be positioned over inside metal tube, uses
Flange enlarging is realized to produce radial electromagnetic force pipe fitting.The method faces the limitation of form-wound coil technique for coiling, and shaped wire
The limitation that cycle space is placed, is difficult to be applicable for miniature or profiled metal pipe fitting flange enlarging.
The content of the invention
To solve miniature or special piece flange enlarging problem, the present invention provides a kind of pipe that need not be placed in inside pipe fitting
The non-contact enlarging of part or method for flanging and device, a kind of non-connecing from pipe fitting end loading can be provided for metal tube flange enlarging
Radial electromagnetic force is touched, realizes the non-contact flange expanding of miniature or special piece, improves component shaping performance.
The technical scheme that the present invention takes is：
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging, comprise the following steps：
Step 1：Using the different driving coil of two numbers of turn, the number of turn of interior loop is much smaller than the number of turn of exterior loop, and two
Coil is coaxial, and interior loop is in concordant close to metal tube end with exterior loop and placed；
Step 2：Metal tube is positioned over the underface of interior loop, and is fixed by flanging die；
Step 3：The height of flange is controlled by flanging die；
Step 4：Exterior loop first loads the pulse current of long pulsewidth or steady-state current produces axial background magnetic field, when background magnetic
When field is up to peak value, interior loop loads the pulse current inductive loop of reverse short pulse duration；
Step 5：Under the collective effect of axial background magnetic field and inductive loop, metal tube end is by radial direction electromagnetism
Power, driving metal tube realize flange.
The coil is placed in metal tube end, and inside and outside coil cooperates, and interior loop is coaxial with exterior loop, and
Inside and outside coil is in concordant close to pipe fitting end, and what pipe fitting end was applied is non-contacting radial electromagnetic force.
The number of turn of the interior loop is much smaller than the number of turn of exterior loop.
The exterior loop loads the pulse current or steady-state current of long pulsewidth, the reverse impulse electricity of interior loop loading short pulse duration
Stream.
The interior loop and the sequential relationship of exterior loop loading current are：Exterior loop load pulses electric current is up to peak value
When, load interior loop pulse current.
The effective time of radial electromagnetic force loading is：The rising edge of interior loop loading current.
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or hemmer, the device include：
Interior loop, to treat that the metal tube end regions of flange provide inductive loop；
Exterior loop, to treat that the metal tube end regions of flange provide axial background magnetic field；
Flanging die, control the flange height of flange metal tube；
Coil power supply power-supply system, energy is provided for interior loop, exterior loop.
Axially symmetric structure is presented in the device, and interior loop be located at the surface of metal tube and central coaxial, metal tube and
Interior loop placement location matches, and exterior loop is positioned over outside interior loop, and two coils are in concordant close to metal tube flared ends；
Interior loop is connected with the less pulse current powersupply system of pulsewidth, exterior loop and the wider pulse current power supply of pulsewidth
System is connected or is connected with steady-state current power supply；Metal tube is placed in inside flanging die.Flared ends side
Metal tube is than flanging die the raised area, for the flange height of metal tube.
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting of the present invention or method for flanging and device, are realized by putting
In the magnet coil of pipe fitting end come the method that produces radial electromagnetic force and then flange and enlarging are carried out to pipe fitting, compared to traditional
Machining process and electromagnetic processing method, coil of the present invention need not be placed in inside pipe fitting, breach force medium riding position
Space limitation, reduce the requirement to force dielectric structure, each side such as material and size, greatly improve manufacturing process
Flexibility, and solve miniature or profiled metal pipe fitting flange enlarging problem.Further, since plastic force is pulse-electromagnetic force,
The characteristics of with non-contact, high-speed, the resilience of workpiece can be effectively reduced, reduce the residual stress of workpiece after shaping, improve work
Part forming property.
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting of the present invention or method for flanging and device, using two into
Shape coil is placed on metal tube end and carries out timesharing loading.Interior loop is mainly for generation of pulsed drive magnetic field, in metal
Pipe fitting end sense ring is vortexed；Exterior loop is mainly used in producing axial background magnetic field in metal tube end.Due to interior loop plus
The discharge current pulsewidth of load is far smaller than the discharge current of exterior loop, negligible influence of the exterior loop to inductive loop, while by
Interior loop is much larger than in the exterior loop number of turn, influence of the interior loop to background magnetic field also can be neglected.Thus, in ring vortex and axially
Under magnetic field interaction, radially outward electromagnetic force is loaded on metal tube end, realizes metal tube flange expanding.
Brief description of the drawings
Fig. 1 is the electromagnetism flange coil assembling schematic diagram that metal tube end set form-wound coil loads radial electromagnetic force.
Fig. 2 is the time cooperation schematic diagram that inside and outside coil distinguishes loading current.
Fig. 2 (a) exterior loops loading current shows for the time cooperation of the inner-outer coil loading current of the pulse current of long pulsewidth
It is intended to.
Fig. 2 (b) exterior loops loading current is the time cooperation schematic diagram of the inner-outer coil loading current of steady-state current.
Fig. 3 (a) is the electromagnetism hemmer installation diagram that metal tube end set form-wound coil loads radial electromagnetic force.
Fig. 3 (b) is the electromagnetism hemmer assembling section that pipe fitting end sets form-wound coil loading radial electromagnetic force.
Fig. 4 (a) is the original state schematic diagram of pipe fitting before flange.
Fig. 4 (b) is the deformed state schematic diagram of pipe fitting in turn-up process.
Fig. 4 (c) is the end-state schematic diagram that flange completes rear tubular member.
Embodiment
Principle analysis：
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging, matched using two form-wound coils
Close, interior loop 1 is placed in parallel in the end of metal tube 3 with exterior loop 2, and interior loop 1 is mainly used in close to the end regions of pipe fitting
The inductive loop in metal tube 3, exterior loop 2 are placed in the outside of interior loop 1, are mainly used in providing in the tube compared with overall background
Magnetic field, two coils are being in concordant close to pipe fitting end.
The pulse current that interior loop 1 loads with exterior loop 2 is engaged in sequential, the electric discharge electricity loaded due to interior loop 1
Stream pulsewidth is far smaller than the discharge current of exterior loop 2, influence of the exterior loop to inductive loop can be neglected, simultaneously because exterior loop 2
The number of turn is much larger than interior loop 1, and influence of the interior loop 1 to background magnetic field also can be neglected.
Interior loop 1 is loaded when discharge current reaches peak value in exterior loop 2 and loaded, to be produced to greatest extent using exterior loop 2
Raw axial magnetic field.Now, ring vortex and axial magnetic field interaction, the radial direction electromagnetism of maximum is produced in metal tube 3
Power, realize the flange processing of metal tube 3.
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging, comprise the following steps：
Step 1：Using the different driving coil of two numbers of turn, the number of turn of interior loop is much smaller than the number of turn of exterior loop, and two
Coil is coaxial, and interior loop is in concordant close to the end of metal tube 3 with exterior loop and placed；
Step 2：Metal tube 3 is positioned over the underface of interior loop, and is fixed by flanging die 4；
Step 3：The height of flange is controlled by flanging die 4；
Step 4：Exterior loop first loads the pulse current of long pulsewidth or steady-state current produces axial background magnetic field, when background magnetic
When field is up to peak value, interior loop loads the pulse current inductive loop of reverse short pulse duration；
Step 5：Under the collective effect of axial background magnetic field and inductive loop, the end of metal tube 3 is by radial direction electromagnetism
Power, driving metal tube 3 realize flange.
The coil is placed in the end of metal tube 3, and inside and outside coil cooperates, and interior loop is coaxial with exterior loop, and
Inside and outside coil is in concordant close to pipe fitting end, and what pipe fitting end was applied is non-contacting radial electromagnetic force.
The number of turn of the interior loop 1 is much smaller than the number of turn of exterior loop 2.The number of turn of interior loop 1 is less, is mainly used in sensing whirlpool
Stream；The number of turn of exterior loop 2 is more, mainly for generation of larger background magnetic field.
The exterior loop 2 loads the pulse current or steady-state current of long pulsewidth, and interior loop 1 loads the reverse impulse of short pulse duration
Electric current.Because pulse current produces pulsed magnetic field, pulsed magnetic field will produce inductive loop, inductive loop and arteries and veins in metal works
Rush magnetic field collective effect and produce Lorentz force driving metal material completion deformation.In the process, the size of Lorentz force and side
To satisfaction：
Wherein,It is inductive loop,It is pulsed magnetic field, the multiplication cross of × expression vector.
In above-mentioned formula, the size of inductive loop is again directly proportional to the rate of change of pulsed magnetic field, and direction meets Lenz's law.
Therefore, if only with a coil, the size and Orientation of inductive loop all highly couples with pulsed magnetic field, and its collective effect produces
Lorentz force direction is uncontrollable under normal conditions.
In the model shown in Fig. 1, chip with long pulse width electric current or steady-state current are connected with exterior loop 2, its caused axle
Downward to magnetic direction, caused inductive loop is ring within the workpiece for it, and direction is counterclockwise, caused by both collective effects
Lorentz force is radial load, and direction is radially-inwardly.If therefore only with unicoil, radially outer Lorentz can not be produced
Power completes flange enlarging to drive material to deform.Interior loop 1 is introduced for this, its loading current is electric for the reverse impulse of short pulse duration
Stream.Because its number of turn is less than exterior loop 2, therefore caused magnetic field is not high, but its current changing rate is much larger than exterior loop 2, therefore
Caused inductive loop amplitude is larger within the workpiece.Under inner-outer coil collective effect, the magnetic direction on workpiece is still for axially
Downwards, but its inductive loop direction is that ring is clockwise, and its Lorentz force being subject to then is changed into radially outward, so as to drive material
Complete deformation and realize flange enlarging.
The interior loop and the sequential relationship of exterior loop loading current are：Exterior loop load pulses electric current is up to peak value
When, load interior loop pulse current.When exterior loop load pulses electric current is up to peak value, pulsed magnetic field now also will
To peaking, according to the calculation formula of Lorentz force described previously, now caused Lorentz force is also maximum.
The effective time of radial electromagnetic force loading is：The rising edge of interior loop loading current.According to Lenz's law, sense
The magnetic field of induced current always hinders the change for causing faradic magnetic flux.Specifically in the model shown in Fig. 1, work as interior loop
When 1 loading current is rising edge, its caused axial magnetic field gradually increases, and inductive loop will hinder the increase in magnetic field, therefore
Inductive loop direction and coil loading current are in opposite direction, are that ring is clockwise, caused Lorentz force direction is radially outward.
When loading current is in trailing edge, its caused axial magnetic field is gradually reduced, and inductive loop will hinder the reduction in magnetic field, because
This inductive loop direction will be changed into identical with coil loading current direction, that is, it is counterclockwise to be changed into ring, this caused Lorentz
Power will be from being radially outward changed into radially-inwardly, so as to which material deformation can not be driven to complete flange enlarging.Therefore the radial direction electromagnetism
The effective time of power loading is the rising edge of interior loop loading current.
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging, comprise the following steps：
(1), interior loop 1, exterior loop 2 are installed, and the power supply with each matching is connected；
(2), metal tube 3 is placed into inside flanging die 4, turning over needed for metal tube 3 is controlled by flanging die 4
Side height；
(3), exterior loop 2 loads the negative-going pulse electric current 7 of long pulsewidth, or loading negative sense steady-state current 8, is metal tube
3 flange position provides background magnetic field axially downwardly；
(4) after, exterior loop 2 loads negative-going pulse electric current 7t1, its discharge current is up to peak value；Or end outer
After circle loading negative sense steady-state current 8t3, now interior loop 1 loads the forward pulse current 6 of short pulse duration, in turning over for metal tube 3
Side location sensitive ring vortex；
(5), pulse current is in t1~t2 or steady-state current is in t3~t4, and the end of metal tube 3 is in axial background magnetic
Under the interaction of field and ring vortex, by radially outer electromagnetic force, the Leading Edge Deformation of metal tube 3 is driven, realizes flange
Processing, such as Fig. 4 (c).
A kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or hemmer, the device include：
Interior loop 1, to treat that the end regions of metal tube 3 of flange provide inductive loop；
Exterior loop 2, to treat that the end regions of metal tube 3 of flange provide axial background magnetic field；
Flanging die 4, the flange height of control flange metal tube 3；
Coil power supply power-supply system, it is interior loop 1, the offer energy of exterior loop 2.
Flanging die 4 is cavity plate, can be made up of any materials, for controlling the flange height and net shape of workpiece, its
Structure depends on treating the target shape of flange workpiece, can be no different with cavity plate used in general machining.
Coil power supply power-supply system is the pulse power, is typically made up of charging system, energy-storage system and discharge circuit.First
Electric energy supply energy-storage system is completed to the accumulation of energy by charging system；Then it is the energy of energy-storage system is fast by discharge circuit
Speed is discharged to coil.
Fig. 3 is the unilateral electromagnetism flange coil assembling schematic diagram for setting form-wound coil to load radial electromagnetic force of pipe fitting end.
The device present axially symmetric structure, interior loop 1 be located at the surface 5mm of metal tube 3 and central coaxial, metal tube 3 and
The placement location of interior loop 1 matches, and the number of turn of interior loop 1 is 3 × 3, and the sectional area per circle coil is 2mm × 4mm；Exterior loop 2
It is positioned over outside interior loop 1, the number of turn is 6 × 6, identical with interior loop 1 per circle coil section product.Two coils are close to metal tube 3
Flared ends is in concordant.Interior loop 1 is connected with the less pulse current powersupply system of pulsewidth, and exterior loop 2 and pulsewidth are wider
Pulse current powersupply system be connected or be connected with steady-state current power supply.Metal tube 3 is placed in flange mold
Inside tool 4, the metal tube 3 of flared ends side is than flange height that the raised area of flanging die 4 is metal tube 3.Fig. 3 (a)
With Fig. 3 (b) Electromagnetic bulging device installation diagrams and its assembling section.
Claims (10)
1. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging, it is characterised in that comprise the following steps：
Step 1：Using the different driving coil of two numbers of turn, the number of turn of interior loop is much smaller than the number of turn of exterior loop, and two coils
Coaxially, interior loop and exterior loop are close to metal tube（3）End is in concordant and placed；
Step 2：Metal tube（3）The underface of interior loop is positioned over, and by flanging die（4）It is fixed；
Step 3：The height of flange is by flanging die（4）Control；
Step 4：Exterior loop first loads the pulse current of long pulsewidth or steady-state current produces axial background magnetic field, when background magnetic field is
When being up to peak value, interior loop loads the pulse current inductive loop of reverse short pulse duration；
Step 5：Under the collective effect of axial background magnetic field and inductive loop, metal tube（3）End by radial electromagnetic force,
Drive metal tube（3）Realize flange.
2. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging according to claim 1, its feature
It is：The coil is placed in metal tube（3）End, and inside and outside coil cooperates, interior loop is coaxial with exterior loop, and
Inside and outside coil is in concordant close to pipe fitting end, and what pipe fitting end was applied is non-contacting radial electromagnetic force.
3. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging according to claim 1, its feature
It is：The number of turn of the interior loop is much smaller than the number of turn of exterior loop.
4. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging according to claim 1, its feature
It is：The exterior loop loads the pulse current or steady-state current of long pulsewidth, and interior loop loads the reverse pulse current of short pulse duration.
5. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging according to claim 1, its feature
It is：The interior loop and the sequential relationship of exterior loop loading current are：When exterior loop load pulses electric current is up to peak value,
Load interior loop pulse current.
6. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging according to claim 1, its feature
It is：The effective time of radial electromagnetic force loading is：The rising edge of interior loop loading current.
7. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or method for flanging, it is characterised in that comprise the following steps：
（1）, installation interior loop（1）, exterior loop（2）, and the power supply with each matching is connected；
（2）, by metal tube（3）It is placed into flanging die（4）Inside, by flanging die（4）To control metal tube（3）It is required
Flange height；
（3）, exterior loop（2）Load the negative-going pulse electric current of long pulsewidth（7）, or loading negative sense steady-state current（8）, it is metal tube
Part（3）Flange position background magnetic field axially downwardly is provided；
（4）, exterior loop（2）Load negative-going pulse electric current（7）After t1, its discharge current is up to peak value；Or end outer
Circle loading negative sense steady-state current（8）After t3, now interior loop（1）Load the forward pulse current of short pulse duration（6）, in metal tube
Part（3）Flange location sensitive ring vortex；
（5）, pulse current is in t1 ~ t2 or steady-state current is in t3 ~ t4, metal tube（3）End is in axial background magnetic
Under the interaction of field and ring vortex, by radially outer electromagnetic force, metal tube is driven（3）Leading Edge Deformation, realization are turned over
Side processes.
8. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or hemmer, it is characterised in that the device includes：
Interior loop（1）, to treat the metal tube of flange（3）End regions provide inductive loop；
Exterior loop（2）, to treat the metal tube of flange（3）End regions provide axial background magnetic field；
Flanging die（4）, control flange metal tube（3）Flange height；
Coil power supply power-supply system, it is interior loop（1）, exterior loop（2）Energy is provided.
9. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or hemmer according to claim 8, its feature
It is：Axially symmetric structure, interior loop is presented in the device（1）Positioned at metal tube（3）Surface and central coaxial, metal tube
（3）With interior loop（1）Placement location matches, exterior loop（2）It is positioned over interior loop（1）Outside, two coils are close to metal tube
（3）Flared ends is in concordant；
Interior loop（1）It is connected with the less pulse current powersupply system of pulsewidth, exterior loop（2）The wider pulse electricity with pulsewidth
Stream powersupply system is connected or is connected with steady-state current power supply；
Metal tube（3）It is placed in flanging die（4）It is internal.
10. a kind of non-contact enlarging of pipe fitting that need not be placed in inside pipe fitting or hemmer according to claim 8, its feature
It is：The metal tube of flared ends side（3）Compare flanging die（4）The raised area, it is metal tube（3）Flange height.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310388394.1A CN116511328A (en) | 2017-11-08 | 2017-11-08 | Pipe fitting non-contact flanging device without arranging inside pipe fitting |
| CN201711093218.6A CN107774780B (en) | 2017-11-08 | 2017-11-08 | Pipe fitting non-contact flanging method and device without arranging pipe fitting inside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711093218.6A CN107774780B (en) | 2017-11-08 | 2017-11-08 | Pipe fitting non-contact flanging method and device without arranging pipe fitting inside |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310388394.1A Division CN116511328A (en) | 2017-11-08 | 2017-11-08 | Pipe fitting non-contact flanging device without arranging inside pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107774780A true CN107774780A (en) | 2018-03-09 |
| CN107774780B CN107774780B (en) | 2023-06-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946181A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | It is a kind of for testing the device and method of metallic welded tubes part connector impact strength |
| CN113523060A (en) * | 2021-07-29 | 2021-10-22 | 上海航天精密机械研究所 | Pipe fitting flanging forming method and pipe fitting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004261856A (en) * | 2003-03-04 | 2004-09-24 | Kobe Steel Ltd | Method for manufacturing tubular member having mounting flange |
| JP2004337966A (en) * | 2003-05-19 | 2004-12-02 | Kobe Steel Ltd | Tubular member with flange and its manufacturing method |
| CN103406418A (en) * | 2013-08-05 | 2013-11-27 | 三峡大学 | Method and device for electromagnetically forming metal pipe fitting in radial and axial loading mode |
| CN107096815A (en) * | 2017-06-05 | 2017-08-29 | 三峡大学 | The pipe fitting electromagnetism hemmer and method of a kind of radial-axial electromagnetic force timesharing loading |
| CN207577198U (en) * | 2017-11-08 | 2018-07-06 | 三峡大学 | A kind of non-contact flaring of pipe fitting that need not be placed in inside pipe fitting or hemmer |
-
2017
- 2017-11-08 CN CN201711093218.6A patent/CN107774780B/en active Active
- 2017-11-08 CN CN202310388394.1A patent/CN116511328A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004261856A (en) * | 2003-03-04 | 2004-09-24 | Kobe Steel Ltd | Method for manufacturing tubular member having mounting flange |
| JP2004337966A (en) * | 2003-05-19 | 2004-12-02 | Kobe Steel Ltd | Tubular member with flange and its manufacturing method |
| CN103406418A (en) * | 2013-08-05 | 2013-11-27 | 三峡大学 | Method and device for electromagnetically forming metal pipe fitting in radial and axial loading mode |
| CN107096815A (en) * | 2017-06-05 | 2017-08-29 | 三峡大学 | The pipe fitting electromagnetism hemmer and method of a kind of radial-axial electromagnetic force timesharing loading |
| CN207577198U (en) * | 2017-11-08 | 2018-07-06 | 三峡大学 | A kind of non-contact flaring of pipe fitting that need not be placed in inside pipe fitting or hemmer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946181A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | It is a kind of for testing the device and method of metallic welded tubes part connector impact strength |
| CN113523060A (en) * | 2021-07-29 | 2021-10-22 | 上海航天精密机械研究所 | Pipe fitting flanging forming method and pipe fitting |
| CN113523060B (en) * | 2021-07-29 | 2023-02-24 | 上海航天精密机械研究所 | Pipe fitting flanging forming method and pipe fitting |
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| CN116511328A (en) | 2023-08-01 |
| CN107774780B (en) | 2023-06-02 |
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