CN108687211A - A kind of metal pipe material Electromagnetic bulging apparatus and method - Google Patents
A kind of metal pipe material Electromagnetic bulging apparatus and method Download PDFInfo
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- CN108687211A CN108687211A CN201810515640.4A CN201810515640A CN108687211A CN 108687211 A CN108687211 A CN 108687211A CN 201810515640 A CN201810515640 A CN 201810515640A CN 108687211 A CN108687211 A CN 108687211A
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- Prior art keywords
- metal pipe
- pipe material
- sleeve
- electromagnetic
- inductive rod
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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
Abstract
The present invention relates to a kind of metal pipe material Electromagnetic bulging apparatus and method, including discharge power supply system, the discharge power supply system is connected separately with the first sleeve, second sleeve by conducting wire, it is connected with metal pipe material to be formed between first sleeve and second sleeve, it is placed with the inductive rod for generating induced current and electromagnetic field built in the metal pipe material to be formed, the boss stretched into metal pipe material to be formed for inductive rod positioning is respectively arranged in first sleeve and second sleeve.The present invention provides a kind of metal pipe material Electromagnetic bulging device, directly can apply electric current to metal pipe material, can be used for the smaller metal pipe material bulging of diameter, solves existing electromagnetic pulse forming technical process coil cost of manufacture height, is easy the technical problems such as failure.
Description
Technical field
The present invention relates to a kind of metal pipe material Electromagnetic bulging apparatus and method.
Background technology
Electromagnetic force is the power of workpiece deformation in electro-magnetic forming, it is different from general mechanical force, and workpiece exerts a force when deforming
Equipment with workpiece without being in direct contact, therefore workpiece surface is without mechanical scratch, without addition lubricant, workpiece surface matter
Amount is preferable.Workpiece deformation is derived from the magnetic field force induced effect of inside workpiece charged particle.Therefore, workpiece deforms uniform force, and remnants are answered
Power is small, and fatigue strength is high, and service life is long, does not influence the machinery, physics, chemical property of part after processing, does not also need hot place
Reason.The control of electromagnetic force is accurate, can effectively reduce error.The technology is mainly used in aerospace, ship naval vessels, weapon dress
The fields such as standby and automobile making, there is more application in metal pipe material bulging.
In traditional electro-magnetic forming, coil is the key position for converting electrical energy into magnetic field energy, and the structure of coil decides
The distribution in magnetic field and the size of driving force, directly affect the deformation of metal pipe material.But since coil itself exists
The problem of, it in discharge process be easy acted on by magnetic field force and current vortex fuel factor, easily cause its structure destroy and
Strength problem can thus cause problem of high cost in coil manufacturing process.In addition, in traditional electro-magnetic forming, usually all it is
Induced current is formed on metal pipe material, this requires metal pipe material be high conductivity material, and for low conductivity material by
Smaller in induced current, the electromagnetic force provided is inadequate, is eventually difficult to shape.Due to both, largely can
Limit extensive use of the electromagnetic forming technique in metal pipe material Bulging Technology.
Application of traditional electro-magnetic forming on metal pipe material is mainly technically characterized by using solenoid coil, such as Fig. 1 a
It is shown;Operation principle is as shown in Figure 1 b.Charge power supply 2 is right after the boosting of transformer 3, then after 4 rectification of rectified silicon stack first
Storage capacitor 6 charges, and current-limiting resistance 5 is for limiting charge circuit electric current, when voltage reaches needed for the deformation of metal pipe material 9
When the voltage wanted, stop charging;Discharge switch is closed to discharge, it, can be empty around it when pulse current is by coil 10
Between generate changing magnetic field, metal pipe material 8 to be formed is in changing magnetic field, can its surface generate induced current produce simultaneously
Raw electromagnetic field, when two electromagnetic fields, which form mutually exclusive electromagnetic force, reaches the yield strength that metal pipe material 8 to be formed deforms,
The shape for the metal pipe material 9 that metal pipe material 8 to be formed will be formed under electromagnetic force.This method has been only used for certain diameter
The bulging of metal pipe material just the use of coil is put forward higher requirements when metal pipe material diameter is smaller, such coil
It is not only difficult to make and its cost of manufacture is higher.
Invention content
The purpose of the present invention is to provide a kind of metal pipe material Electromagnetic bulging apparatus and method, can directly be applied to metal pipe material
Add electric current, the smaller metal pipe material bulging of diameter can be used for, solves existing electromagnetic pulse forming technical process coil and be fabricated to
This height is easy the technical problems such as failure.
Technical program of the present invention lies in:A kind of metal pipe material Electromagnetic bulging device, including discharge power supply system, it is described to put
Electric power-supply system is connected separately with the first sleeve, second sleeve by conducting wire, is connected between first sleeve and second sleeve
Need form metal tubing, the inductive rod for generating induced current and electromagnetic field be placed with built in the metal pipe material to be formed,
The boss stretched into metal pipe material to be formed for inductive rod positioning is respectively arranged in first sleeve and second sleeve.
Further, the discharge power supply system includes charge power supply, transformer, rectification silicon stack, current-limiting resistance, energy storage electricity
Container, closure switch;The charge power supply, transformer, rectification silicon stack, current-limiting resistance, energy-storage capacitor, closure switch formation are filled
Electrical circuit;The energy-storage capacitor, closure switch, metal pipe material to be formed, inductive rod, positioning convex platform, the first sleeve and second
Sleeve forms discharge loop.
Further, first sleeve and second sleeve be made of metal material respectively and outboard end be respectively arranged with it is blind
Hole, the double-end conducting wire of energy-storage capacitor are pressed on the first sleeve and the corresponding blind hole of second sleeve through screw respectively
On.
Further, first sleeve and the internal diameter of second sleeve are more than the diameter of metal pipe material to be formed, first set
Cylinder and second sleeve are pressed on through rubber ring on metal pipe material to be formed respectively.
Further, the metal pipe material to be formed is made of high conductivity material or low conductivity material, gold to be formed
The shape for belonging to tubing is cylinder, hexahedron or irregular shape.
Further, be provided with insulating layer between the metal pipe material to be formed and inductive rod, metal pipe material to be formed with
There is gap between inductive rod.
Further, the inductive rod is high conductivity material, and shape is cylinder, hexahedron or irregular shape
Shape.
Further, the shape of the metal pipe material to be formed is hollow cylinder, and the inductive rod is a copper cylindrical rod
Material.
Further, the positioning convex platform is for insulating materials and by the extension of pedestal and the first sleeve of stretching or second sleeve
Column forms, and the pedestal of positioning convex platform is fixed on through screw in the first sleeve or second sleeve, and the extension column diameter of positioning convex platform is small
In pipe diameter.
A kind of Electromagnetic bulging method of metal pipe material, including a kind of metal pipe material Electromagnetic bulging device, steps are as follows:
S1:Inductive rod is positioned in metal pipe material to be formed, with positioning convex platform come inductive rod in positioning pipe, inductive rod and is waited for into
It is equipped with insulating layer between shape metal pipe material, so that inductive rod is leaned on metal pipe material to be formed as far as possible in the case where ensureing insulation
Closely;
S2:External first sleeve in metal pipe material both ends to be formed and second sleeve, and make the first sleeve and second sleeve respectively with
The conducting wire at energy-storage capacitor both ends is connected directly;
S3:It according to the requirement of metal pipe material reducing to be formed, charges to energy-storage capacitor, when reaching metal pipe material to be formed
After deforming required discharge voltage, the electric discharge of form metal tubing is directly treated, close to the inductive rod meeting of metal pipe material to be formed
Reverse induction vortex is generated on its surface and electromagnetic field, electromagnetic field will produce electromagnetic repulsion force;
S4:When the electromagnetic repulsion force of generation reaches the yield strength of metal pipe material to be formed, metal pipe material to be formed will be driven
It deforms.
Compared with prior art, the present invention has the following advantages:
1. replacing the discharge coil of traditional electro-magnetic forming with inductive rod, structure is more simple, compact, and service life is longer,
It can reuse, effectively reduce cost and difficulty of processing, solve existing electromagnetic pulse forming technical process coil and make
The technical problems such as of high cost, easy failure;
It, not only can be with to control electromagnetic force size by controlling size of current 2. directly electric current can be applied to metal pipe material
For the forming of high conductivity material, the forming of low conductivity material can be also used for;
3. compared with traditional electro-magnetic forming, can be used for the smaller metal pipe material of form diameter, also have it is simple in structure, use the longevity
Order long advantage.
Description of the drawings
Fig. 1 a are conventional metals tubing Electromagnetic bulging discharge coil structure;
Fig. 1 b are conventional metals tubing Electromagnetic bulging device;
Fig. 2 is the metal pipe material Electromagnetic bulging schematic diagram of the present invention;
Fig. 3 is the metal pipe material and inductive rod A-A sectional views of the present invention;
Fig. 4 a are the front view of the sleeve and boss of the present invention;
Fig. 4 b are the left view of the sleeve and boss of the present invention;
In figure:I- charge circuits, II- discharge loops, 1- solenoid coils, 2- charge power supplies, 3- transformers, 4- rectification silicon stacks,
Metal pipe material, 10- coils, 11- after 5- current-limiting resistances, 6- energy-storage capacitors, 7- switches, 8- metal pipe materials to be formed, 9- forming
Inductive rod, the first sleeves of 12a-, 12b- second sleeves, 12c- blind holes, 13- boss, 13a- pedestals, 13b- extending columns, 14- are led
Line.
Specific implementation mode
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and coordinate attached drawing, make detailed
It is carefully described as follows, but the present invention is not limited thereto.
Referring to figs. 2 to Fig. 4 b
A kind of metal pipe material Electromagnetic bulging device, including discharge power supply system, the discharge power supply system are distinguished by conducting wire 14
It is connected with the first sleeve 12a, second sleeve 12b, metal pipe material to be formed is connected between first sleeve and second sleeve
8, be placed with the inductive rod 11 for generating induced current and electromagnetic field built in the metal pipe material to be formed, first sleeve and
The boss 13 stretched into metal pipe material to be formed for inductive rod positioning is respectively arranged in second sleeve.
In the present embodiment, the discharge power supply system includes charge power supply(It can be AC power)2, transformer 3, rectification silicon
Heap 4, current-limiting resistance 5, energy-storage capacitor 6, closure switch 7;The charge power supply, transformer, rectification silicon stack, current-limiting resistance, storage
Energy capacitor, closure switch form charge circuit, and charging process is that charge power supply passes through 3 transformation of transformer, then rectified silicon stack 4
It charges to energy-storage capacitor 6 after rectification.The energy-storage capacitor, metal pipe material to be formed, inductive rod, is determined at closure switch
Position boss, the first sleeve and second sleeve form discharge loop.
In the present embodiment, the current-limiting resistance 5 is for limiting charge circuit size of current, and closure switch 7 are for controlling
The break-make of discharge loop electric current.
In the present embodiment, first sleeve and second sleeve is made of metal material respectively and outboard end is respectively arranged with
Blind hole 12c, the double-end conducting wire 14 of energy-storage capacitor is pressed on the first sleeve through screw respectively and second sleeve corresponds to
Blind hole on, to realize the energization of metal pipe material to be formed.
In the present embodiment, the internal diameter of first sleeve and second sleeve is slightly larger than the diameter of metal pipe material to be formed, the
One sleeve and second sleeve are pressed on through rubber ring on metal pipe material to be formed respectively, to ensure to connect.
In the present embodiment, the metal pipe material to be formed is high conductivity material(Such as aluminium tube or copper pipe)Or it low leads
Electric rate material(Such as steel tubing or titanium alloy pipe)Be made, the shape of metal pipe material to be formed be cylinder, hexahedron or
Person's irregular shape can control the size of electromagnetic force by controlling electric current.
In the present embodiment, insulating layer, metal pipe material to be formed are provided between the metal pipe material to be formed and inductive rod
There is gap between inductive rod, and so that inductive rod is leaned on metal pipe material to be formed as far as possible in the case where ensureing insulation
Closely.
In the present embodiment, the inductive rod is high conductivity material, and shape is cylinder, hexahedron or irregular shape
Shape can be chosen according to the type of pipe.
In the present embodiment, the shape of the metal pipe material to be formed is hollow cylinder, and the inductive rod is a copper coin column
Bar is placed in metal pipe material to be formed, can be used for the forming of metal pipe material to be formed.
In the present embodiment, the positioning convex platform for insulating materials and by pedestal 13a and stretches out the first sleeve or second sleeve
Extending column 13b composition, the pedestal of positioning convex platform is fixed on through screw in the first sleeve or second sleeve, the extension of positioning convex platform
Column diameter is less than pipe diameter.
A kind of Electromagnetic bulging method of metal pipe material, including a kind of metal pipe material Electromagnetic bulging device, steps are as follows:
S1:Inductive rod is positioned in metal pipe material to be formed, the extending column of positioning convex platform, which stretches into metal pipe material to be formed, to be used
In positioning inductive rod, it is equipped with insulating layer between inductive rod and metal pipe material to be formed, makes as far as possible in the case where ensureing insulation
Inductive rod and metal pipe material to be formed are close;
S2:The pedestal of positioning convex platform is pressed to by screw in the first sleeve and second sleeve respectively, metal pipe material to be formed
Both ends correspond to external first sleeve and second sleeve, and so that the conducting wire at energy-storage capacitor both ends is passed through screw and be pressed on first respectively
On sleeve and the outboard end of second sleeve, the direct phase of the first sleeve and second sleeve and energy-storage capacitor both ends conducting wire is completed
Even;
S3:It according to the requirement of metal pipe material reducing to be formed, charges to energy-storage capacitor, when reaching metal pipe material to be formed
After deforming required discharge voltage, stop charging, the electric discharge of form metal tubing is directly treated, close to metal pipe material to be formed
Inductive rod can generate reverse induction vortex on its surface and electromagnetic field, electromagnetic field will produce electromagnetic repulsion force;
S4:When the electromagnetic repulsion force of generation reaches the yield strength of metal pipe material to be formed, metal pipe material to be formed will be driven
It deforms, is finally configured to required metal pipe material 9.
The foregoing is merely presently preferred embodiments of the present invention, for the ordinary skill in the art, according to this hair
Bright introduction designs various forms of metal pipe material Electromagnetic bulging device and methods and does not need to performing creative labour, not
The case where being detached from the principle and spirit of the invention is descended to the mortal world the equivalent change made according to scope of the present invention patent, modification, replacement
And modification, it should all belong to the covering scope of the present invention.
Claims (10)
1. a kind of metal pipe material Electromagnetic bulging device, including discharge power supply system, which is characterized in that the discharge power supply system is logical
It crosses conducting wire and is connected separately with the first sleeve, second sleeve, metal to be formed is connected between first sleeve and second sleeve
Tubing is placed with the inductive rod for generating induced current and electromagnetic field, first sleeve built in the metal pipe material to be formed
The boss for being used for inductive rod positioning is stretched into metal pipe material to be formed with being respectively arranged in second sleeve.
2. a kind of metal pipe material Electromagnetic bulging device according to claim 1, which is characterized in that the discharge power supply system
Including charge power supply, transformer, rectification silicon stack, current-limiting resistance, energy-storage capacitor, closure switch;The charge power supply, transformation
Device, rectification silicon stack, current-limiting resistance, energy-storage capacitor, closure switch form charge circuit;The energy-storage capacitor, closure switch,
Metal pipe material, inductive rod, positioning convex platform, the first sleeve and second sleeve to be formed form discharge loop.
3. a kind of metal pipe material Electromagnetic bulging device according to claim 2, which is characterized in that first sleeve and
Two sleeves are made of metal material respectively and outboard end is respectively arranged with blind hole, the double-end conducting wire warp of energy-storage capacitor
Screw is pressed on respectively on the first sleeve and the corresponding blind hole of second sleeve.
4. a kind of metal pipe material Electromagnetic bulging device according to claim 1,2 or 3, which is characterized in that the first set
Cylinder and the internal diameter of second sleeve are more than the diameter of metal pipe material to be formed, and the first sleeve and second sleeve are compressed through rubber ring respectively
On metal pipe material to be formed.
5. a kind of metal pipe material Electromagnetic bulging device according to claim 1,2 or 3, which is characterized in that described to be formed
Metal pipe material is made of high conductivity material or low conductivity material, and the shape of metal pipe material to be formed is cylinder, hexahedron
Or irregular shape.
6. a kind of metal pipe material Electromagnetic bulging device according to claim 1,2 or 3, which is characterized in that described to be formed
It is provided with insulating layer between metal pipe material and inductive rod, there is gap between metal pipe material to be formed and inductive rod.
7. a kind of metal pipe material Electromagnetic bulging device according to claim 5, which is characterized in that the inductive rod is led for height
Electric rate material, shape are cylinder, hexahedron or irregular shape.
8. a kind of metal pipe material Electromagnetic bulging device according to claim 1, which is characterized in that the metal tube to be formed
The shape of material is hollow cylinder, and the inductive rod is a copper coin column bar.
9. a kind of metal pipe material Electromagnetic bulging device according to claim 1, which is characterized in that the positioning convex platform is exhausted
Edge material is simultaneously made of pedestal and the first sleeve of stretching or the extending column of second sleeve, and the pedestal of positioning convex platform is fixed on through screw
In first sleeve or second sleeve, the extension column diameter of positioning convex platform is less than pipe diameter.
10. a kind of Electromagnetic bulging method of metal pipe material, including a kind of metal pipe material Electromagnetic bulging according to claim 2 or 3
Device, which is characterized in that steps are as follows:
S1:Inductive rod is positioned in metal pipe material to be formed, with positioning convex platform come inductive rod in positioning pipe, inductive rod and is waited for into
It is equipped with insulating layer between shape metal pipe material, so that inductive rod is leaned on metal pipe material to be formed as far as possible in the case where ensureing insulation
Closely;
S2:External first sleeve in metal pipe material both ends to be formed and second sleeve, and make the first sleeve and second sleeve respectively with
The conducting wire at energy-storage capacitor both ends is connected directly;
S3:It according to the requirement of metal pipe material reducing to be formed, charges to energy-storage capacitor, when reaching metal pipe material to be formed
After deforming required discharge voltage, the electric discharge of form metal tubing is directly treated, close to the inductive rod meeting of metal pipe material to be formed
Reverse induction vortex is generated on its surface and electromagnetic field, electromagnetic field will produce electromagnetic repulsion force;
S4:When the electromagnetic repulsion force of generation reaches the yield strength of metal pipe material to be formed, metal pipe material to be formed will be driven
It deforms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515640.4A CN108687211A (en) | 2018-05-25 | 2018-05-25 | A kind of metal pipe material Electromagnetic bulging apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515640.4A CN108687211A (en) | 2018-05-25 | 2018-05-25 | A kind of metal pipe material Electromagnetic bulging apparatus and method |
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| CN108687211A true CN108687211A (en) | 2018-10-23 |
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| CN201810515640.4A Pending CN108687211A (en) | 2018-05-25 | 2018-05-25 | A kind of metal pipe material Electromagnetic bulging apparatus and method |
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Citations (7)
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|---|---|---|---|---|
| US2976907A (en) * | 1958-08-28 | 1961-03-28 | Gen Dynamics Corp | Metal forming device and method |
| US3210509A (en) * | 1962-08-31 | 1965-10-05 | Deutsche Edelstahlwerke Ag | Method of and apparatus for electromagnetically deforming metal |
| US5331832A (en) * | 1993-08-23 | 1994-07-26 | Xerox Corporation | Sleeve sizing processes |
| CN1824405A (en) * | 2005-08-08 | 2006-08-30 | 孙旭光 | Extrnal heating metal pipe high temperature ultra high water pressure once shaping technology method and equipment |
| CN103861933A (en) * | 2014-04-01 | 2014-06-18 | 湖南大学 | Corrugated pipe forming device and corrugated pipe machined through corrugated pipe forming device |
| CN105728541A (en) * | 2016-04-28 | 2016-07-06 | 华中科技大学 | Coil-free electromagnetic-pulse forming device and method of metal plates |
| CN107186039A (en) * | 2017-05-02 | 2017-09-22 | 三峡大学 | It is a kind of to improve the device and method that electro-magnetic forming workpiece pastes mould |
-
2018
- 2018-05-25 CN CN201810515640.4A patent/CN108687211A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2976907A (en) * | 1958-08-28 | 1961-03-28 | Gen Dynamics Corp | Metal forming device and method |
| US3210509A (en) * | 1962-08-31 | 1965-10-05 | Deutsche Edelstahlwerke Ag | Method of and apparatus for electromagnetically deforming metal |
| US5331832A (en) * | 1993-08-23 | 1994-07-26 | Xerox Corporation | Sleeve sizing processes |
| CN1824405A (en) * | 2005-08-08 | 2006-08-30 | 孙旭光 | Extrnal heating metal pipe high temperature ultra high water pressure once shaping technology method and equipment |
| CN103861933A (en) * | 2014-04-01 | 2014-06-18 | 湖南大学 | Corrugated pipe forming device and corrugated pipe machined through corrugated pipe forming device |
| CN105728541A (en) * | 2016-04-28 | 2016-07-06 | 华中科技大学 | Coil-free electromagnetic-pulse forming device and method of metal plates |
| CN107186039A (en) * | 2017-05-02 | 2017-09-22 | 三峡大学 | It is a kind of to improve the device and method that electro-magnetic forming workpiece pastes mould |
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