CN208466939U - A kind of variable cross-section metal pipe material Electromagnetic bulging device - Google Patents
A kind of variable cross-section metal pipe material Electromagnetic bulging device Download PDFInfo
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- CN208466939U CN208466939U CN201820791289.7U CN201820791289U CN208466939U CN 208466939 U CN208466939 U CN 208466939U CN 201820791289 U CN201820791289 U CN 201820791289U CN 208466939 U CN208466939 U CN 208466939U
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- metal pipe
- pipe material
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- sleeve
- boss
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Abstract
The utility model relates to a kind of variable cross-section metal pipe material Electromagnetic bulging devices, including metal pipe material to be formed and power-supply system, the left and right both ends of the metal pipe material to be formed are arranged with a sleeve respectively, the sleeve inner is provided with a boss, and one end of the boss protrudes into the inside of metal pipe material to be formed and is equipped with inductive rod；The power-supply system passes through the conducting wire sleeve connection with metal pipe material both ends to be formed respectively.The utility model realizes that variable cross-section metal pipe material is shaped using free bulge principle, simple and reasonable for structure, by applying electric current to metal pipe material, to realize section variable diameter that metal pipe material is located at an arbitrary position.In addition, the utility model can also accurately control the forming of variable cross-section metal pipe material using mould structure.
Description
Technical field:
The utility model relates to a kind of variable cross-section metal pipe material Electromagnetic bulging devices.
Background technique:
Hydraulic expanding-forming technology, which manufactures hollow and thin-walled tube components, has process is few, at low cost, light-weight, strength and stiffness are good etc.
Advantage, China's ship naval vessels, aerospace, automobile manufacture fast development, the demand for welding reducer pipe structural member is more next
It is more, it is gradually widely applied in various manufacturing industry.But using conventional hydraulic forming technique production automobile rack, start
When the big odd-shaped cross section hollow of the axial dimensions such as rack, since the obstruction that frictional resistance adds greatly mold geometry causes
Axial supplement is difficult, easily causes pipe fitting excessive thinning and ruptures or the defects of fillibility is bad.
Electromagnetic pulse forming technology can improve the material forming limit, and have and be easy to accurately control, and forming speed is fast, at
The high feature of shape workpiece accuracy.Electromagnetic forming technique is mainly used in aerospace, ship naval vessels, weaponry and automobile manufacture
Equal fields, specifically on the plastic processing of tubing, especially expansion tube process using more, so, electro-magnetic forming is in reducer pipe
There is great advantage in Plastic Forming.
Traditional electro-magnetic forming process is usually to generate electromagnetic repulsive force to metal pipe material using coil to be formed, as in
State's patent publication No. passes through electric current when being the tubing electromagnetic forming device forming of the document introduction of CN103406418A in coil,
Workpiece is generated vortex by magnetic fields, pushes workpiece to transport to mold since electromagnetic field effect generates repulsive force between coil and workpiece
It is dynamic that workpiece is made to be adjacent to mold, with this Forming Workpiece.Main problem existing for existing metal tube electromagnetic forming method has: (1)
Capacitor maximum capacity is limited in electro-magnetic forming, is only applicable to conduct electricity very well, (such as copper, aluminium close the lower metal of mechanical strength
Gold), and the pipe thickness of metal tube is generally less than 3mm；(2) coil and pipe fitting position are relatively fixed, pipe fitting bulging or undergauge
When, in order to generate corresponding electromagnetic force, need to change the relative position between coil and workpiece；(3) pipe fitting bulging sets coil
Inside tubing, for generating electromagnetic repulsion force, reach metal tube bulging purpose.This method can only be formed with certain diameter
Tubing is shaped just relatively difficult when metal pipe material diameter is smaller using loop construction, and coil cost of manufacture is higher.
Utility model content:
The utility model makes improvement for the above-mentioned problems of the prior art, i.e., skill to be solved in the utility model
Art problem is to provide a kind of variable cross-section metal pipe material Electromagnetic bulging device, simple and reasonable for structure, directly applies electricity to metal pipe material
Stream solves high mechanical strength, low conductivity and the big change of wall thickness and cuts, it can be achieved that the section variable diameter that metal pipe material is located at an arbitrary position
The forming of face metal pipe material.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of variable cross-section metal pipe material electromagnetism is swollen
Shape dress is set, including metal pipe material to be formed and power-supply system, and the left and right both ends of the metal pipe material to be formed are arranged with one respectively
Sleeve, the sleeve inner are provided with a boss, and one end of the boss is protruded into the inside of metal pipe material to be formed and is equipped with
Inductive rod；The power-supply system passes through the conducting wire sleeve connection with metal pipe material both ends to be formed respectively.
Further, the sleeve is metal material, and one end of sleeve has to be set in outside metal pipe material to be formed
First blind hole of side, the other end of sleeve have the second blind hole, and conducting wire is by screw in compression inside the second blind hole.
Further, the boss is insulating materials, and the at T-shaped shape of boss, one end of boss is connected firmly by screw first
The bottom hole of blind hole, the other end offer the extend radially through and through-hole to install inductive rod, place insulation in the through-hole
Gasket fixes inductive rod.
Further, the inductive rod is high conductivity material, and gap is equipped between inductive rod and metal pipe material to be formed.
Further, insulating layer is equipped between the inductive rod and metal pipe material to be formed.
Further, the metal pipe material to be formed is high conductivity material or low conductivity material.
Further, the power-supply system includes charge power supply, transformer, rectification silicon stack, current-limiting resistance, energy-storage capacitor
And closure switch；The charge power supply, transformer, rectification silicon stack, current-limiting resistance and energy-storage capacitor form charge circuit；
The energy-storage capacitor, closure switch, sleeve, boss, inductive rod and metal pipe material to be formed form discharge loop.
Compared with prior art, the utility model has the effect that
(1) the utility model is compared with traditional electro-magnetic forming, it can be achieved that the section variable diameter of metal pipe material any position, goes back
It is simple with structure, the advantages of long service life；
(2) the utility model is directly powered to metal pipe material, and the size of electromagnetic force can be controlled by electric current, can be shaped
There is certain thickness tubing；In addition, the limitation of high conductivity material can only be shaped by breaching traditional electro-magnetic forming, realize to low
The forming of conductivity material；
(3) using blind hole is opened up on sleeve, conducting wire is pressed on sleeve by screw, metal pipe material outer surface and sleeve
Inner surface connects, and realizes the connection of conducting wire and metal pipe material, structurally reasonable, easy to use.
Detailed description of the invention:
Fig. 1 is the organigram of the utility model embodiment；
Fig. 2 is the main view organigram of sleeve；
Fig. 3 is the left view organigram of sleeve；
Fig. 4 is the main view organigram of boss；
Fig. 5 is the left view organigram of boss.
In figure:
1- charge power supply；2- transformer；3- rectification silicon stack；4- current-limiting resistance；5- energy-storage capacitor；6- closure switch；7-
Metal pipe material to be formed；8- inductive rod；Metal pipe material after 9- forming；10- sleeve；The first blind hole of 101-；The second blind hole of 102-；
11- boss；111- through-hole；I-charge circuit；II discharge loop.
Specific embodiment:
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
As shown in Figs. 1-5, a kind of variable cross-section metal pipe material Electromagnetic bulging device of the utility model, including metal tube to be formed
Material 7 and power-supply system, the left and right both ends of the metal pipe material 7 to be formed are arranged with a sleeve 10 respectively, inside the sleeve 10
It is provided with a boss 11, one end of the boss 11 protrudes into the inside of metal pipe material 7 to be formed and is equipped with inductive rod 8, induction
Stick 8 is located at the place to be deformed of metal pipe material 7 to be formed；The power-supply system by conducting wire respectively with metal pipe material 7 to be formed
The sleeve 10 at both ends connects.Directly treated when use form metal tubing 7 energization, the surface of both ends inductive rod 8 generates and to
The opposite vortex of current direction in form metal tubing 7 generates the electromagnetic repulsion force with repulsive interaction；When the electromagnetism of generation is denounceed
When power reaches the yield strength of metal pipe material 7 to be formed, drive the place to be deformed of metal pipe material 7 to be formed that bulging occurs.
In the present embodiment, the sleeve 10 is metal material, and shape is determined by the shape of metal pipe material 7 to be formed.Set
One end of cylinder 10 has the first blind hole 101 to be set in 7 outside of metal pipe material to be formed, and the other end of sleeve 10 has the
Two blind holes 102, conducting wire is by screw in compression inside the second blind hole 102.Conducting wire is pressed on sleeve 10 by screw, at
7 outer surface of shape metal pipe material connects with 10 inner surface of sleeve, realizes the connection of conducting wire and metal pipe material to be formed, structurally reasonable,
It is easy to use.
In the present embodiment, the aperture of first blind hole 101 is slightly larger than the outer diameter of metal pipe material 1 to be formed on the sleeve 10,
It is compressed it on metal pipe material to be formed by rubber ring.
In the present embodiment, the boss 11 is insulating materials, and one end of the at T-shaped shape of boss 11, boss 11 is solid by screw
It is associated in the bottom hole of the first blind hole 101, the other end offers the extend radially through and through-hole 111 to install inductive rod, described
Insulation spacer is placed in through-hole 111 to fix inductive rod 8.The length that boss 11 protrudes into inside metal pipe material 7 to be formed is unlimited, can
It extends at 7 inside arbitrary section of metal pipe material to be formed, realizes that the section of any position in metal pipe material 7 to be formed becomes
Diameter.
In the present embodiment, the inductive rod 8 is high conductivity material (such as material of aluminium or copper etc), inductive rod 8
(in the actual production process, shape is not limited to cylindrical body, hexahedron or irregular shape, according to be formed to be cylindric
The type of metal pipe material is chosen).
In the present embodiment, it is equipped with gap between the inductive rod 8 and metal pipe material to be formed 7, is equipped with insulation in the gap
Layer, it is close as far as possible in the case where guaranteeing insulation between inductive rod 8 and metal pipe material to be formed 7.
In the present embodiment, the metal pipe material 7 to be formed is high conductivity material (such as material of aluminium or copper etc),
It can also be low conductivity material (such as steel tubing or titanium alloy pipe), electromagnetic force is controlled by control electric current when use
Size.The shape of the metal pipe material to be formed 7 is hollow cylinder (in the actual production process, the shape of metal pipe material to be formed
Shape is not limited to cylindrical body, hexahedron or irregular shape, is selected according to process requirements).
In the present embodiment, the power-supply system includes charge power supply 1, transformer 2, rectification silicon stack 3, current-limiting resistance 4, energy storage
Capacitor 5 and closure switch 6；The charge power supply 1, transformer 2, rectification silicon stack 3, current-limiting resistance 4 and energy-storage capacitor 5
Charge circuit I is formed, charging process is that charging voltage charges to energy-storing container after transformation and rectification；The energy-storage capacitor
5, closure switch 6, sleeve 10, boss 11, inductive rod 8 and metal pipe material to be formed 7 form discharge loop.Preferably, described
Current-limiting resistance 4 is for limiting charge circuit size of current, and the closure switch 6 are used to control the logical of discharge loop electric current
It is disconnected.
Specific implementation process:
Step 1: the conducting wire at 5 both ends of energy-storage capacitor is pressed on the set at 7 both ends of metal pipe material to be formed by screw respectively
Cylinder 10 on, the boss 11 sleeve 10 inside is extend into inside 7 material of metal tube to be formed, the inductive rod 8 on boss 11 positioned at
The place to be deformed of shape metal pipe material 7；
Step 2: being charged with charge power supply 1 to energy-storage capacitor 5, needed for reaching metal pipe material 7 to be formed and deforming
When the discharge voltage wanted, stop charging；
Step 3: closure switch 6 are closed, form metal tubing 7 is treated and passes to electric current and generate pulse electromagnetic field, both ends sense
It answers the surface of stick 8 to generate the vortex opposite with current direction in metal pipe material 7 to be formed, generates the electromagnetism with repulsive interaction
Repulsion；
Step 4: when the electromagnetic repulsion force of generation reaches the yield strength of metal pipe material 7 to be formed, driving gold to be formed
Bulging occurs for the place to be deformed for belonging to tubing 7, finally obtains metal pipe material 9 after forming.
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the patents it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (7)
1. a kind of variable cross-section metal pipe material Electromagnetic bulging device, it is characterised in that: including metal pipe material to be formed and power-supply system,
The left and right both ends of the metal pipe material to be formed are arranged with a sleeve respectively, and the sleeve inner is provided with a boss, described convex
One end of platform protrudes into the inside of metal pipe material to be formed and is equipped with inductive rod；The power-supply system by conducting wire respectively at
The sleeve connection at shape metal pipe material both ends.
2. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that: the sleeve is
Metal material, one end of sleeve have the first blind hole to be set on the outside of metal pipe material to be formed, the other end tool of sleeve
There is the second blind hole, conducting wire is by screw in compression inside the second blind hole.
3. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 2, it is characterised in that: the boss is
One end of insulating materials, the at T-shaped shape of boss, boss connects firmly the bottom hole in the first blind hole by screw, and the other end is offered along diameter
Insulation spacer is placed to the perforative and through-hole to install inductive rod, in the through-hole to fix inductive rod.
4. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that: the inductive rod
For high conductivity material, gap is equipped between inductive rod and metal pipe material to be formed.
5. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 4, it is characterised in that: the inductive rod
Insulating layer is equipped between metal pipe material to be formed.
6. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that: described to be formed
Metal pipe material is high conductivity material or low conductivity material.
7. a kind of variable cross-section metal pipe material Electromagnetic bulging device according to claim 1, it is characterised in that: the power supply system
System includes charge power supply, transformer, rectification silicon stack, current-limiting resistance, energy-storage capacitor and closure switch；The charge power supply,
Transformer, rectification silicon stack, current-limiting resistance and energy-storage capacitor form charge circuit；The energy-storage capacitor, closure switch, set
Cylinder, boss, inductive rod and metal pipe material to be formed form discharge loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820791289.7U CN208466939U (en) | 2018-05-25 | 2018-05-25 | A kind of variable cross-section metal pipe material Electromagnetic bulging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820791289.7U CN208466939U (en) | 2018-05-25 | 2018-05-25 | A kind of variable cross-section metal pipe material Electromagnetic bulging device |
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| Publication Number | Publication Date |
|---|---|
| CN208466939U true CN208466939U (en) | 2019-02-05 |
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ID=65218659
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820791289.7U Expired - Fee Related CN208466939U (en) | 2018-05-25 | 2018-05-25 | A kind of variable cross-section metal pipe material Electromagnetic bulging device |
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| CN (1) | CN208466939U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421874A (en) * | 2018-05-25 | 2018-08-21 | 福州大学 | A kind of variable cross-section metal pipe material Electromagnetic bulging device and method |
| CN109731982A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工业大学 | Difficult-to-deformation material complex section hollow unit hinders heating electromagnetic manufacturing process certainly |
| CN112792202A (en) * | 2020-12-14 | 2021-05-14 | 三峡大学 | Device and method for improving forming uniformity of light alloy pipe fitting |
| CN113182446A (en) * | 2021-05-13 | 2021-07-30 | 中南大学 | Current-assisted metal pipe electromagnetic forming device and forming method |
-
2018
- 2018-05-25 CN CN201820791289.7U patent/CN208466939U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421874A (en) * | 2018-05-25 | 2018-08-21 | 福州大学 | A kind of variable cross-section metal pipe material Electromagnetic bulging device and method |
| CN108421874B (en) * | 2018-05-25 | 2024-03-29 | 福州大学 | Electromagnetic bulging device and method for variable-section metal pipe |
| CN109731982A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工业大学 | Difficult-to-deformation material complex section hollow unit hinders heating electromagnetic manufacturing process certainly |
| CN112792202A (en) * | 2020-12-14 | 2021-05-14 | 三峡大学 | Device and method for improving forming uniformity of light alloy pipe fitting |
| CN113182446A (en) * | 2021-05-13 | 2021-07-30 | 中南大学 | Current-assisted metal pipe electromagnetic forming device and forming method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20210525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |