CN208019226U - A kind of metal tube building mortion based on through-flow pattern - Google Patents
A kind of metal tube building mortion based on through-flow pattern Download PDFInfo
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- CN208019226U CN208019226U CN201820232689.4U CN201820232689U CN208019226U CN 208019226 U CN208019226 U CN 208019226U CN 201820232689 U CN201820232689 U CN 201820232689U CN 208019226 U CN208019226 U CN 208019226U
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- forming
- driving rod
- pipe fitting
- metal tube
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Abstract
The utility model discloses a kind of metal tube building mortions based on through-flow pattern, including forming driving rod, electrode and insulation module；Wherein, forming driving rod provides plastic force for metal tube, electrode is for connecting power-supply system, metal tube and forming driving rod to constitute closed circuit, insulation module ensures that shaping driving rod has sufficiently high mechanical strength for realizing the electrical isolation between metal tube and forming driving rod.Coil temperature rise present in existing metal tube electromagnetic forming technique and stress rupture problem are avoided by the utility model, realizes small-bore and the forming of special piece and the welding of pipe fitting.
Description
Technical field
The utility model belongs to metal tube molding field, more particularly, to a kind of metal tube based on through-flow pattern
Part building mortion.
Background technology
Electro-magnetic forming is a kind of high-speed forming technique that using pulse-electromagnetic force metal works are carried out with plastic processing.With
The quasi-static forming technique of tradition is compared, and electromagnetic forming technique has the characteristics that high-speed, non-contact, single mold and body force, can
Effectively improve the forming limit of material, inhibit corrugation and decreasing rebound etc., have in light material plate tube components figuration manufacture field
Have wide practical use.
Patent CN103406418A disclose a kind of radial direction and axial biaxial loadings formula metal tube electromagnetic forming method and
Device, it is that field coil and eddy current coil are powered that principle, which is using the pulse power, and field coil generates background magnetic field, vorticity line
Circle induces vortex in metal tube and generates electromagnetic force to which driving pipe fitting shapes.However, currently based on the metal of coil
Electromagnetic Forming method has the following problems：
(1) coil is indispensable one of device, but coil often faces Wen Sheng and stress rupture during the work time
Problem.On the one hand, coil is the equal of big impedance load, causes temperature anxious by will produce a large amount of Joule heats after pulse high current
Play rise, therefore coil often work a period of time must all carry out cooling treatment, can not longtime running.On the other hand, in electromagnetism
Forming process coil itself can be acted on by powerful electromagnetic stress, be ensure coil have sufficiently high mechanical strength to
It avoids that stress rupture occurs, needs to carry out consolidation process to coil, substantially increase design and producing cost；
(2) it is difficult to shape small-bore metal tube.When metal tube internal diameter very little and need realize bulging when, be placed on
The diameter of the coil of inside pipe fitting will be very small, this can cause the difficulty of processing of coil and cost to greatly improve, or even can not obtain
To the coil met the requirements；
(3) it is difficult to shape special piece.It is commonly cylindric for the coil in metal tube electro-magnetic forming, in metal tube
The electromagnetic force generated in part is uniformly and symmetrically distributed, and can shape the pipe fitting of regular shape, but is difficult to realize pipe fitting in irregular shape
Forming；
(4) Forming depth of pipe fitting is limited.The relative position of coil and pipe fitting is fixed, and electric discharge for the first time is so that pipe fitting deformation
Afterwards, the distance between pipe fitting and coil increase, and the electromagnetic force that coil generates in the tube will substantially reduce, in the mistake of after discharge
The forming effect unobvious of pipe fitting in journey.
Utility model content
For the disadvantages described above or Improvement requirement of the prior art, the utility model provides a kind of gold based on through-flow pattern
Belong to pipe forming device, thus solves coil temperature rise, stress rupture existing for existing metal tube forming technique and be difficult to reality
The technical issues of existing small-bore and special piece forming.
To achieve the above object, the utility model provides a kind of metal tube building mortion based on through-flow pattern, packet
It includes：Electrode, forming driving rod and insulation module；
The electrode includes connection electrode and commutation electrode, wherein the connection electrode is placed on forming pipe fitting and described
The company between the forming pipe fitting and the forming driving rod and external power supply module is realized in the same side for shaping driving rod respectively
It connects；The commutation electrode is placed on the other side of the forming pipe fitting and the forming driving rod, formed the forming pipe fitting with
Conductive channel between the forming driving rod constitutes complete closure discharge loop, passes through the forming driving rod to realize
The first pulse current it is opposite with by the forming direction of the second pulse current of pipe fitting；
The forming driving rod is placed on the outside or inside of the forming pipe fitting, passes through first pulse current
And the interaction of second pulse current, drive the forming pipe fitting to deform；
The insulation module provides insulation protection for the electrode, and is driven for the forming pipe fitting and the forming
It provides and is dielectrically separated between stick.
Preferably, the insulation module includes insulation cover plate and insulating sleeve；Wherein, the insulation cover plate is provided with several
Slot is with placing said electrodes and provides insulation protection, to avoid the electrode directly it is exposed in air, the insulating sleeve is put
It sets between the forming pipe fitting and the forming driving rod, is dielectrically separated from providing, while realizing the forming driving rod
It reinforces to improve the mechanical strength of the forming driving rod, ensures that the forming driving rod does not deform during the work time.
Preferably, the forming driving rod is placed on the forming inside pipe fitting, the forming pipe fitting by radially to
Outer electromagnetic force, the forming driving rod is by electromagnetic force radially inward, under the driving of electromagnetic force, the forming pipe fitting
Bulging occurs.
By the above-mentioned means, when forming driving rod is placed on forming inside pipe fitting, after external power supply module switch is closed,
Pulse current is flowed through by the closed circuit of connection electrode, commutation electrode, forming pipe fitting and forming driving bar construction.In commutation electrode
Under the action of, it is opposite with the forming current direction of driving rod by the electric current for shaping pipe fitting.Repelled each other principle according to the opposite sex of electric current,
Pipe fitting is shaped by by electromagnetic force radially, and forming driving rod is by electromagnetic force radially inward.In electromagnetic force
Under driving, bulging occurs for forming pipe fitting, and shapes driving rod and do not deform under the protection of insulation module.
Preferably, the forming driving rod is placed on the forming inside pipe fitting, and the Local Convex of the forming driving rod
It rises, to realize the local bulging of the forming pipe fitting.
By the above-mentioned means, changing the shape of forming driving rod, it is allowed to form local crowning.Shape the main part of driving rod
Divide the distance between forming pipe fitting larger, the electromagnetic force generated on forming pipe fitting is negligible.And shape driving rod
Projection portion and forming the distance between pipe fitting very little, shaped when the two electric current is reversed will be generated on pipe fitting it is prodigious along diameter
Local bulging occurs to outside electromagnetic force and under its driving.
Preferably, the forming driving rod includes the first forming driving rod and second shapes driving rod, the first one-tenth described
Shape driving rod is placed on the first forming inside pipe fitting, and the second forming driving rod is placed on outside the second forming pipe fitting, described
First forming driving rod includes the first projection portion, and the second forming driving rod includes the second projection portion, and described first is convex
Part is played with second projection portion in same level, so that the first forming pipe fitting shapes pipe fitting with described second
Occur high-speed motion and to collide in the projection portion of forming driving rod, to realize the first forming pipe fitting with it is the second one-tenth described
Shape pipe fitting welding.
By the above-mentioned means, to realize two diametrical welding of metal tube, while using 2 forming driving rod structures
At a driving group, one of forming driving rod is placed on interior inside pipe fitting, another forming driving rod is placed on outer tube member
Outside, and the protrusion of two forming driving rods is on the same horizontal plane.Reduce being sized to for forming driving rod projection portion
Current density increases.After the switch of external power supply module is closed, the current direction by two pipe fittings is identical, is shaped by two
The current direction of driving rod is also identical but opposite with pipe fitting electric current.On the one hand, mutual attractive force is generated between two pipe fittings.It is another
Aspect, the forming driving rod in outside generate repulsive force radially inward on outer tube member, and the forming driving rod of inside is in inner tube
Repulsive force radially is generated on part.Under attraction and the collective effect of repulsive force, two pipe fittings will drive in forming
The elevated regions of stick occur high-speed motion and collide, and the welding of two pipe fittings is realized under powerful stress.
Preferably, described device further includes：Transmission module for the spatial position for adjusting the forming driving rod；It is described
Transmission module is connect with the forming driving rod.
By the above-mentioned means, control the movement in the axial direction of forming driving rod using transmission module, may be implemented two at
The welding of shape pipe fitting different zones.
In general, it can obtain down the above technical solutions conceived by the present invention are compared with the prior art,
Row advantageous effect：
(1) by using foreign current, the metal tube electro-magnetic forming of coil is realized, coil is avoided from source
Wen Sheng and stress rupture problem, save the design and producing cost of coil, improve production efficiency.
(2) it is placed on forming inside pipe fitting by the way that the sufficiently small solid cylindrical of diameter is shaped driving rod, and in the two
In be passed through reverse current, realize the bulging of path metal tube.Further, the size and shape of driving rod are shaped by change
Shape, circulation path of the control electric current in shaping driving rod, realizes the forming of profiled metal pipe fitting.
(3) by shaping driving rods using two in the inner side and outer side of two metal tubes, and pulse current is controlled
Circulation path so that metal tube simultaneously by electromagnetic attraction and repulsion force effect and the two direction it is identical, two pipe fittings it
Between occur high velocity impact and finally realize weld.Further, the spatial position of forming driving rod is adjusted using transmission system, it is real
The electromagnetism welding of existing two metal tube different zones.
Description of the drawings
Fig. 1 is that the first embodiment structure of the metal tube building mortion provided by the utility model based on through-flow pattern is shown
It is intended to
Fig. 2 is that the second embodiment structure of the metal tube building mortion provided by the utility model based on through-flow pattern is shown
It is intended to
Fig. 3 is that the 3rd embodiment structure of the metal tube building mortion provided by the utility model based on through-flow pattern is shown
It is intended to；
In all the appended drawings, identical reference numeral is used for indicating identical element or structure, wherein：1- power-supply systems,
1a- capacitors, 1b- switches, 2- forming pipe fittings, 3- forming driving rods, 4- insulating sleeves, 5a- connection electrodes, 5b- commutation electrodes,
6- insulation cover plates, 7- molds, 8- transmission modules.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
The utility model provides a kind of metal tube building mortion based on through-flow pattern, avoid coil Wen Sheng and
Stress rupture problem realizes small-bore and special piece forming and the electromagnetism welding of pipe fitting.Below by way of attached drawing and implementation
The utility model is described in detail in example.
First embodiment
Fig. 1 is the electromagnetic forming device of the small diameter metal pipe fitting provided by the utility model based on through-flow pattern.Wherein,
Power-supply system 1 is made of impulse capacitor 1a and switch 1b.In formation system, forming pipe fitting 2 is that an internal diameter is 20mm, wall thickness
For the aluminium alloy seamless pipe of 2mm, the insulation mold 7 that one is provided with grooving is placed on the outside of forming pipe fitting and is used to control pipe fitting
Bulging shape.The inside of forming pipe fitting 2 is concentrically placed at using the solid copper bar that radius is 8mm as forming driving rod 3, and
The two isolation is avoided into short circuit using the epoxy insulation sleeve 4 that a wall thickness is 2mm.In forming pipe fitting and shape the upper of driving rod
Place connection electrode 5a and connect with fitting closely respectively and with the positive and negative anodes of power-supply system on the outside of port, two connection electrode 5a it
Between by epoxy insulation cover board 6 isolation avoid short circuit.Meanwhile fitting closely ground at the lower port of forming pipe fitting and forming driving rod
Place commutation electrode 5b, connection forming pipe fitting and forming driving rod so that opposite by the current direction of the two.
After the switch 1b of power-supply system is closed, it is assumed that pulse current is from top to down by shaping driving rod 3, by commutation
Electric current flows into forming pipe fitting from lower port and flows out return current cathode from upper port after electrode 5b.At this point, by shaping pipe fitting 2
It is opposite with the forming current direction of driving rod 3.Repelled each other principle according to the opposite sex of electric current, forming pipe fitting is by electricity radially
Simultaneously under its driving in the cavity of mold 7 bulging occurs for magnetic force.
Similarly, if mold 7 is placed between forming pipe fitting and forming driving rod, the logical circulation road of electric current is changed simultaneously
Diameter make by shape pipe fitting and forming the current direction of driving rod it is identical, at this time forming pipe fitting will be by electricity radially inward
Magnetic attraction, to realize the necking deformation of metal tube.
Second embodiment
Fig. 2 is the electromagnetic forming device of the profiled metal pipe fitting provided by the utility model based on through-flow pattern, especially suitable
For the metal tube forming under no mold.Wherein, power-supply system 1 is made of impulse capacitor 1a and switch 1b.Formation system
In, forming pipe fitting 2 is that an internal diameter is 20mm, and wall thickness is the aluminium alloy seamless pipe of 2mm.Compared with first embodiment, in this reality
The size and shape for applying forming driving rod 3 in example change, and wherein radius is reduced to 2mm to increase in forming driving rod
Current density.In addition, the regional area of forming driving rod 3 is bent to form the first protrusion 3a and the second protrusion 3b, and main body
Part still with forming pipe fitting 2 it is concentric placement.Driving rod 3 is shaped to be wrapped up to ensure to have sufficiently high machine by epoxy insulation sleeve 4
Tool intensity is unlikely to deform due to by electromagnetic force during the work time.Shape pipe fitting 2 and forming 3 lower port of driving rod
The commutation electrode 5b at place is connected by sufficiently long conducting wire.
After the switch 1b of power-supply system is closed, by shaping pipe fitting 2 and shaping the current direction of driving rod 3 on the contrary, forming
Pipe fitting 2 is by electromagnetic force radially.The electromagnetic force negative that is subject to of forming pipe fitting 2 about pipe fitting and forming driving rod 3 it
Between distance shape pair of pipe fitting 2 since the main part and forming the distance between pipe fitting 2 of forming driving rod 3 are very big
Answer the electromagnetic force generated in region negligible.For shaping the first protrusion 3a of driving rod 3, it is between forming pipe fitting 2
Apart from very little, the electromagnetic force that pipe fitting corresponding region is subject to is very big and free bulge occurs for driving pipe fitting.And forming is driven
Second protrusion 3b of stick 3, it and forming the distance between pipe fitting 2 are larger, compared with the first protrusion 3a pipe fitting corresponding region by
Electromagnetic force it is smaller, therefore pipe fitting bulging height reduce.As it can be seen that the shape that this example shapes driving rod 3 by change changes
The circulation path of pulse current, to control the distribution of electromagnetic force in forming pipe fitting 2 and its pipe fitting forming result of decision.
3rd embodiment
Fig. 3 is the electromagnetic forming device of the metal tube welding provided by the utility model based on through-flow pattern.Wherein, electric
Source system 1 is made of impulse capacitor 1a and switch 1b.In formation system, forming pipe fitting 2 is two aluminium alloys placed with one heart
Seamless pipe, the internal diameter and wall thickness of interior pipe fitting are respectively 20mm and 2mm, and the internal diameter and wall thickness of outer tube member are respectively 23mm and 2mm.This
Embodiment uses two forming driving rods 3, and projection portion is tip-shape to increase current density, and two forming driving rods
3 projection portion is on the same horizontal plane.Insulating sleeve 4 is arranged in the interior outside of forming 3 projection portion of driving rod to ensure
The projection portion of driving rod does not deform during pipe fitting forming.The upper port of two forming pipe fittings 2 shares a connection
Electrode 5a makes the current direction by two pipe fittings identical, and two forming driving rods 3 respectively by a connection electrode with
Power-supply system connects.Forming pipe fitting 2 and the lower port for shaping driving rod 3 share a commutation electrode 5b and to shape by two
The current direction of driving rod 3 is identical and opposite with the current direction in forming pipe fitting 2.The spatial position of two forming driving rods 3
It is controlled by transmission module 8.It is fitted closely between forming driving rod 3 and connection electrode 5a and commutation electrode 5b but not exclusively solid
Fixed, forming driving rod 3 can be in electrode axially movable.
After the switch 1b of power-supply system is closed, pulse current is from top to down by shaping pipe fitting 2, by the electrode 5b that commutates
Afterwards and from bottom to up power-supply system is returned to by shaping driving rod 3.On the one hand, according to the attracting principle of the same sex of electric current, two
Generate electromagnetic attraction between forming pipe fitting 2, the attraction that interior pipe fitting is subject to radially, the attraction edge that outer tube member is subject to
Radially inwards.On the other hand, repelled each other principle according to the abnormity of electric current, shape and generate electromagnetism row between driving rod 3 and forming pipe fitting 2
Repulsion, the repulsive force radially inward that outer tube member is applied by outer forming driving rod is come from, interior pipe fitting is come from interior
Shape the repulsive force radially that driving rod applies.Since the current density of forming 3 projection portion of driving rod is very big,
The electromagnetic repulsive force that the corresponding pipe fitting region of projection portion is subject to is very big.Under electromagnetic attraction force effect, interior pipe fitting and outer tube member
There is the movement tendency of bulging and undergauge respectively.Under powerful electrodynamic repulsion power drive, forming 3 projection portion of driving rod is corresponding
High-speed motion will occur for pipe fitting region, and two pipe fittings occur localized bumps and realize welding under huge impact force action.
Further, the axial position that forming driving rod 3 is adjusted using transmission system, passes through the reignition of power-supply system
Realize the welding of two metal tube different zones.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of metal tube building mortion based on through-flow pattern, which is characterized in that including：Electrode, forming driving rod and
Insulation module；
The electrode includes connection electrode and commutation electrode, wherein the connection electrode is placed on forming pipe fitting and the forming
The connection between the forming pipe fitting and the forming driving rod and external power supply module is realized in the same side of driving rod respectively；
The commutation electrode is placed on the other side of the forming pipe fitting and the forming driving rod, forms the forming pipe fitting and described
Shape the conductive channel between driving rod, constitute it is complete be closed discharge loop, shape the of driving rod by described to realize
One pulse current is opposite with by the forming direction of the second pulse current of pipe fitting；
The forming driving rod is placed on the outside or inside of the forming pipe fitting, by first pulse current and
The interaction of second pulse current drives the forming pipe fitting to deform；
The insulation module provides insulation protection for the electrode, and for the forming pipe fitting and the forming driving rod it
Between provide and be dielectrically separated from.
2. the apparatus according to claim 1, which is characterized in that the insulation module includes insulation cover plate and insulating sleeve；
Wherein, the insulation cover plate is provided with several slots with placing said electrodes and provides insulation protection, and the insulating sleeve is placed on
It between the forming pipe fitting and the forming driving rod, is dielectrically separated from providing, while realizing the reinforcing of the forming driving rod
To improve the mechanical strength of the forming driving rod.
3. device according to claim 1 or 2, which is characterized in that the forming driving rod is placed on the forming pipe fitting
Inside, the forming pipe fitting by electromagnetic force radially, the forming driving rod by electromagnetic force radially inward,
Under the driving of electromagnetic force, bulging occurs for the forming pipe fitting.
4. device according to claim 1 or 2, which is characterized in that the forming driving rod is placed on the forming pipe fitting
Inside, and the local crowning of the forming driving rod, to realize the local bulging of the forming pipe fitting.
5. the apparatus according to claim 1, which is characterized in that the forming driving rod include first forming driving rod and
Second forming driving rod, the first forming driving rod are placed on the first forming inside pipe fitting, and the second forming driving rod is put
It sets outside the second forming pipe fitting, the first forming driving rod includes the first projection portion, the second forming driving rod packet
The second projection portion is included, first projection portion and second projection portion are in same level, so that described first
Forming pipe fitting occurs high-speed motion in the projection portion of forming driving rod with the second forming pipe fitting and collides, to realize
It states the first forming pipe fitting and shapes pipe fitting welding with described second.
6. the device according to claim 2 or 5, which is characterized in that described device further includes：It is driven for adjusting the forming
The transmission module of the spatial position of dynamic stick；The transmission module is connect with the forming driving rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820232689.4U CN208019226U (en) | 2018-02-09 | 2018-02-09 | A kind of metal tube building mortion based on through-flow pattern |
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| CN201820232689.4U CN208019226U (en) | 2018-02-09 | 2018-02-09 | A kind of metal tube building mortion based on through-flow pattern |
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| CN208019226U true CN208019226U (en) | 2018-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188246A (en) * | 2018-02-09 | 2018-06-22 | 华中科技大学 | A kind of metal tube building mortion and method based on through-flow pattern |
-
2018
- 2018-02-09 CN CN201820232689.4U patent/CN208019226U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188246A (en) * | 2018-02-09 | 2018-06-22 | 华中科技大学 | A kind of metal tube building mortion and method based on through-flow pattern |
| CN108188246B (en) * | 2018-02-09 | 2023-12-01 | 华中科技大学 | Metal pipe fitting forming device and method based on through-flow mode |
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