CN210281062U - Dissimilar metal plate magnetism collection-force control type magnetic pulse connecting device - Google Patents
Dissimilar metal plate magnetism collection-force control type magnetic pulse connecting device Download PDFInfo
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- CN210281062U CN210281062U CN201920707654.6U CN201920707654U CN210281062U CN 210281062 U CN210281062 U CN 210281062U CN 201920707654 U CN201920707654 U CN 201920707654U CN 210281062 U CN210281062 U CN 210281062U
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Abstract
The utility model relates to a dissimilar metal plate magnetism-control type magnetic pulse connecting device, which comprises a target plate, a separation plate, a flying plate and an outer guide seat which are sequentially superposed from bottom to top, wherein the outer guide seat is provided with a longitudinal through hole, the bottom of the longitudinal through hole is provided with a first opening, a solenoid coil is longitudinally arranged in the longitudinal through hole, two ends of the solenoid coil are connected with a power supply system, and the power supply system discharges electricity for the solenoid coil so as to enable an induction loop formed by the outer guide seat and the flying plate to generate electromagnetic driving force; the isolation plate is provided with a second opening which is beneficial to the flying plate to downwards penetrate through and impact on the target plate to form a connecting area under the driving of the electromagnetic driving force. The utility model has the advantages of simple and reasonable design, through with solenoid coil setting in outer guide holder, realize the purpose of collection magnetism, accuse power for produce flexible adjustable electromagnetic drive power, widen the window of magnetic pulse connection technology, solved the problem that traditional magnetic pulse connection technology energy utilization is low and connection quality is difficult to control.
Description
The technical field is as follows:
the utility model relates to a dissimilar metal plate magnetism collection-force control type magnetic pulse connecting device.
Background art:
at present, in the fields of aerospace, weaponry, automobile manufacturing and the like, automobile weight reduction has gradually become a consensus, and light alloys represented by aluminum alloys, magnesium alloys, titanium alloys and the like are widely concerned and valued for the connection with conventional metal materials. Because dissimilar metals have great differences in crystal structure, mechanical properties, physical properties, chemical properties and the like, the traditional connecting technologies such as arc welding, resistance spot welding and the like are easy to generate brittle intermetallic compounds on a connecting interface, generate a heat affected zone, form a large stress gradient, are difficult to obtain a high-strength connecting joint, and greatly limit the application of light materials and dissimilar metal connecting pieces in the fields, so that research and development of a new method suitable for dissimilar metal connection are urgently needed.
The magnetic pulse welding is an advanced technology of plastic deformation connection, the connection process does not need filler and protective gas, the joint has no heat influence area, and the formation of intermetallic phases in a joint transition area can be greatly reduced, so that the strength of the connection joint is obviously improved, and an effective mode is provided for metal connection. The process principle of the traditional plate magnetic pulse connection is shown in fig. 1, a discharge switch 1 is closed, an energy storage capacitor 3 discharges to a single-turn coil 8 to generate a discharge current 10, a strong pulse magnetic field 9 can be generated around the single-turn coil 8, a flying plate 5 with high conductivity can generate an induction current 11 in the strong pulse magnetic field 9, the interaction of the magnetic fields can generate an electromagnetic driving force 12 to drive the flying plate 5 to impact a target plate 7 at a high speed, a connection area 13 is formed on the target plate 7 finally, and the metallurgical connection of dissimilar metal plates is realized in millisecond level.
At present, the magnetic pulse connection of the plate is generally carried out by adopting a single-turn coil (such as an I type, an H type or an E type), and because the coupling degree of the single-turn coil and the plate blank is low, most magnetic lines of force are scattered in the whole space system, and the mutual inductance coefficient of the connection system is low, the energy utilization rate is low. Meanwhile, the inductance of the single-turn coil is small, the rising gradient of the discharge current is large, and the pulse width of the pulse electromagnetic force is small, so that the effective time for the electromagnetic force to do work is short. In order to obtain collision velocities of several hundred meters per second (≧ 300 m/s), it is generally necessary to increase the discharge voltage by a large amount to increase the amplitude of the pulsed electromagnetic driving force. However, the short service life of the coil and the damage of the equipment are easily caused by the over-high discharge voltage, and meanwhile, the process window for connecting dissimilar metal plates is narrowed, the quality of the connection joint is difficult to control, and the popularization and the application of the magnetic pulse connection technology in the filed of the complaint are greatly limited.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a xenogenesis metal sheet collection magnetism-accuse power formula magnetic pulse connecting device is provided, not only rational in infrastructure, energy utilization is high, and control is convenient moreover, the attach fitting is of high quality for the process window widen.
In order to realize the purpose, the utility model discloses a technical scheme is: a heterogeneous metal plate magnetism collecting-force controlling type magnetic pulse connecting device comprises a target plate, an isolation plate, a flying plate and an outer guide seat which are sequentially overlapped from bottom to top, wherein a longitudinal through hole is formed in the outer guide seat, a first opening is formed in the bottom of the longitudinal through hole, a solenoid coil is longitudinally arranged in the longitudinal through hole, two ends of the solenoid coil are connected with a power supply system, and the power supply system discharges electricity for the solenoid coil so that an induction loop formed by the outer guide seat and the flying plate generates electromagnetic driving force; the isolation plate is provided with a second opening which is beneficial to the flying plate to downwards penetrate through and impact on the target plate to form a connecting area under the driving of the electromagnetic driving force. The coil is arranged in the outer guide seat, so that more magnetic lines of force are converged between the discharge coil and the outer guide seatThe gap between the outer guide seats increases the density of magnetic lines of force (namely, magnetic collection effect) at the position, controls the direction of the induced current of the plate blank, strengthens the consistency of the direction of the induced current, and further strengthens the electromagnetic force applied to the flight plate (namely, control effect). Further, an electromagnetic driving force: (
) The amplitude and the pulse width can be actively adjusted by changing the parameters, the discharge voltage, the type and the material of the outer guide seat and the like of the solenoid coil, so that the adjustment flexibility of the driving force is improved.
The device further comprises a base and a pressing plate, wherein the base is provided with a concave part for accommodating the target plate, the isolation plate, the flying plate and the lower end of the outer guide seat; the pressing plate is arranged on the top surface of the outer guide seat, and the left end and the right end of the pressing plate are connected with the base through the connecting piece so as to downwards press the outer guide seat.
Furthermore, a plurality of vertical counter bores which are distributed side by side along the longitudinal direction are symmetrically arranged at the left end and the right end of the base; the left end and the right end of the pressure plate are symmetrically provided with a plurality of connecting through holes which are in one-to-one correspondence with the positions of the vertical counter bores; the connecting piece includes hexagon socket head cap screw and lock nut, hexagon socket head cap screw is from up running through vertical counter bore and connect the through-hole down in proper order, lock nut is located the upside of clamp plate and with hexagon socket head cap screw threaded connection, realizes locking.
Furthermore, the power supply system comprises an energy storage capacitor, a voltage dividing resistor and a discharging switch, wherein the energy storage capacitor, the voltage dividing resistor and the discharging switch are connected between two ends of the solenoid coil in series, the discharging switch is used for controlling the on-off of the current of a discharging loop, and the voltage dividing resistor is used for controlling the voltage at two ends of the energy storage capacitor.
Further, the outer guide seat and the solenoid coil are both made of high-conductivity materials; the flyplates are made of a highly or low conductive material.
Further, when the flying plate is made of a low-conductivity material, the surface of the flying plate is plated with a high-conductivity material.
Further, the target plate is made of a metal material; the isolation plate is made of an insulating material.
Further, the base and the pressing plate are both made of insulating materials.
Compared with the prior art, the utility model discloses following effect has: the utility model has the advantages of simple and reasonable design, through with solenoid coil setting in outer guide holder, realize the purpose of collection magnetism, accuse power for produce flexible adjustable electromagnetic drive power, widen the window of magnetic pulse connection technology, solved the problem that traditional magnetic pulse connection technology energy utilization is low and connection quality is difficult to control.
Description of the drawings:
FIG. 1 is a schematic diagram of a conventional magnetic pulse connection principle;
fig. 2 is a schematic diagram of an embodiment of the present invention;
fig. 3 is a schematic perspective view of an embodiment of the present invention;
fig. 4 is a schematic perspective view of a base in an embodiment of the present invention;
FIG. 5 is a schematic perspective view of an embodiment of the present invention;
fig. 6 is a schematic perspective view of an outer guide seat in an embodiment of the present invention;
fig. 7 is a schematic perspective view of a pressing plate according to an embodiment of the present invention.
In the figure:
1-a discharge switch; 2-a voltage dividing resistor; 3-an energy storage capacitor; 4-pressing force; 5-flying plate; 6-a separation plate; 7-a target plate; 8-single turn coil; 9-magnetic field direction; 10-discharge current; 11-induction current; 12-an electromagnetic driving force; 13-a linking region; 14-outer guide seat; 15-a solenoid coil; 16-a base; 17-hexagon socket head cap screw; 18-a platen; 19-a locking nut; 20-a recess; 21-a first opening; 22-a second opening; 23-longitudinal through holes; 24-vertical counterbores; 25-connecting vias.
The specific implementation mode is as follows:
in order to explain the present invention more clearly, the following description of the present invention is made with reference to the accompanying drawings and examples, and it is to be understood that the drawings listed below are merely some specific examples of the present invention.
As shown in fig. 2 to 7, the utility model relates to a dissimilar metal plate magnetism collection-force control type magnetic pulse connecting device, including from the target plate 7, division board 6, flying plate 5 and outer guide holder 14 of from up superpose in proper order down, be equipped with vertical through-hole 23 on the outer guide holder 14, the bottom of vertical through-hole 23 is equipped with first opening 21, indulges in the vertical through-hole 23 and is equipped with solenoid coil 15, the both ends of solenoid coil 15 are connected with electrical power generating system through the wire, electrical power generating system discharges for solenoid coil 15, so that the induced current 11 of the opposite direction with discharge current 10 can be produced in the induction loop that outer guide holder 14 and flying plate 5 constitute, produces electromagnetic drive power 12; when the electromagnetic driving force 12 reaches the yield strength of the flying plate 5, the flying plate 5 is driven to downwards impact the target plate 7 at a high speed, and finally a connecting area 13 is formed on the target plate 7, so that the metallurgical connection of the dissimilar metal plates is realized within millisecond level; the isolation plate 6 is provided with a second opening 22 for facilitating the downward penetration of the flying plate 5 under the driving of the electromagnetic driving force 12.
In this embodiment, the device further comprises a base 16 and a pressing plate 18, wherein the base 16 is provided with a concave portion 20 for accommodating the target plate 7, the isolation plate 6, the flying plate 5 and the lower end of the outer guide seat 14; the pressing plate 18 is arranged on the top surface of the outer guide seat 14, and the left end and the right end of the pressing plate 18 are connected with the base 16 through connecting pieces so as to press the outer guide seat 14 downwards.
Preferably, the left end and the right end of the base 16 are symmetrically provided with a plurality of vertical counter bores 24 which are distributed side by side along the longitudinal direction; the left end and the right end of the pressure plate 18 are symmetrically provided with a plurality of connecting through holes 25 which are in one-to-one correspondence with the positions of the vertical counter bores 24; the connecting piece includes hexagon socket head cap screw 17 and lock nut 19, hexagon socket head cap screw 17 from up running through vertical counter bore 24 and connect the via hole 25 down in proper order, lock nut 19 be located the upside of clamp plate 18 and with hexagon socket head cap screw 17 threaded connection, realize locking, accomplish compressing tightly of whole device.
In this embodiment, the power supply system includes an energy storage capacitor 3, a voltage dividing resistor 2, and a discharging switch 1, which are connected in series between two ends of the solenoid coil 15, where the discharging switch 1 is used to control the on/off of the current of the discharging loop, and the voltage dividing resistor 2 is used to control the voltage at two ends of the energy storage capacitor 3.
In this embodiment, the outer lead seat 14 is made of a high conductivity material (e.g., aluminum, copper, etc.), and the shape of the outer lead seat 14 is not limited to the shape shown in the drawings, and should be designed accordingly according to the actual process requirements. The first opening side of the outer guide seat 14 is connected with the flying plate 5 through pretightening force to form an induction loop.
In this embodiment, the solenoid coil 15 is made of a high conductivity material to provide a strong pulsed magnetic field to the inductive loop.
In this embodiment, the flying plate 5 may be made of a high-conductivity or low-conductivity material; when the flying plate 5 is made of a high-conductivity material, the flying plate does not need any treatment; when the flying plate is made of a low-conductivity material, the surface of the flying plate is plated with a high-conductivity material coating so as to improve the conductivity of the flying plate 5; the thickness of the flighting 5 should be adequate otherwise it is detrimental to the plastic deformation of the flighting 5.
In this embodiment, the target plate 7 is made of a metal material, and the conductivity and plate thickness of the material are not required.
In this embodiment, the isolation plate 6 is made of an insulating material and is used for isolating the flying plate 5 from the target plate 7, and the second opening on the isolation plate 6 provides an acceleration space for the flying plate 5 to impact the target plate 7 at a high speed.
In this embodiment, the base 16 and the pressure plate 18 are made of insulating materials; preferably, three vertical counter bores 24 are respectively arranged at the left end and the right end of the base 16, and three connecting through holes 25 are respectively arranged at the left end and the right end of the pressure plate 18.
In this embodiment, the metal plate is subject to electromagnetic driving force
Dependent on the density of the induced current in the slab
And the magnetic field around it
（
). The outer guide seat is introduced into the dissimilar metal plate magnetic pulse connecting device, on one hand, more magnetic lines of force are converged in a gap between the discharge coil and the outer guide seat, the density of the magnetic lines of force at the position is increased (namely the magnetic collection effect), and meanwhile, the mutual inductance coefficient of the whole induction system is improved, so that the energy utilization rate is greatly improved; on the other hand, the flow direction of the slab induced current is controlled, so that the consistency of the directions of the slab induced currents is enhanced, and the electromagnetic force applied to the flying plate is also enhanced (namely, the force control effect).
The utility model has the advantages that:
(1) electromagnetic driving force: (
) The amplitude and the pulse width of the driving force can be actively adjusted by changing the parameters, the discharge voltage, the type and the material of the outer guide seat and the like of the solenoid coil, so that the adjustment flexibility of the driving force is greatly improved;
(2) the electromagnetic driving force is distributed more uniformly along the axial direction of the solenoid coil, so that the quality of the joint connected by the magnetic pulse of the dissimilar metal plates can be better controlled, and the window of the magnetic pulse connection technology is widened;
(3) the connection energy utilization rate is high, the discharge voltage is low, the service life of the coil can be prolonged, the metallurgical bonding of the dissimilar metal plates can be realized at lower discharge energy, and a new processing way is provided for the connection of the dissimilar metal plates;
(4) compared with the traditional dissimilar metal plate magnetic pulse connection, when the flying plate is made of a low-conductivity material, the plating treatment is carried out on the flying plate, so that the method is not only suitable for the connection of the high-conductivity material, but also suitable for the connection of the low-conductivity material, and the problem that the traditional magnetic pulse connection technology is only suitable for the connection of the high-conductivity material is solved;
(5) compared with the traditional dissimilar metal plate connection process, the process has the advantages of high quality of the connection joint and good sealing performance of the joint.
The working of this embodiment includes the following steps:
step S1: the lead wires extending out of the two ends of the energy storage capacitor 3 are connected to the two ends of the solenoid coil 15, then the discharge switch 1 is closed, a strong magnetic field can be generated around the electrified solenoid coil 15, the flying plate 5 in the strong magnetic field generates an induced current and an induced magnetic field, and the two magnetic fields interact to generate an electromagnetic driving force 12;
step S2: when the generated electromagnetic driving force 12 reaches the yield strength of the flying plate 5, the flying plate 5 is driven to downwards impact the target plate 7 at a high speed, and a connecting area 13 is formed on the target plate 7, so that the metallurgical connection of the dissimilar metal plates is realized.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a xenogenesis metal sheet collection magnetism-accuse power formula magnetic pulse connecting device which characterized in that: the electromagnetic driving device comprises a target plate, an isolation plate, a flying plate and an outer guide seat which are sequentially overlapped from bottom to top, wherein a longitudinal through hole is formed in the outer guide seat, a first opening is formed in the bottom of the longitudinal through hole, a solenoid coil is longitudinally arranged in the longitudinal through hole, two ends of the solenoid coil are connected with a power supply system, and the power supply system discharges electricity for the solenoid coil so that an induction loop formed by the outer guide seat and the flying plate generates electromagnetic driving force; the isolation plate is provided with a second opening which is beneficial to the flying plate to downwards penetrate through and impact on the target plate to form a connecting area under the driving of the electromagnetic driving force; the device also comprises a base and a pressing plate, wherein the base is provided with a concave part for accommodating the target plate, the isolation plate, the flying plate and the lower end of the outer guide seat; the pressing plate is arranged on the top surface of the outer guide seat, and the left end and the right end of the pressing plate are connected with the base through the connecting piece so as to downwards press the outer guide seat.
2. The dissimilar metal plate magnetism collection-force control type magnetic pulse connection device according to claim 1, characterized in that: the left end and the right end of the base are symmetrically provided with a plurality of vertical counter bores which are distributed side by side along the longitudinal direction; the left end and the right end of the pressure plate are symmetrically provided with a plurality of connecting through holes which are in one-to-one correspondence with the positions of the vertical counter bores; the connecting piece includes hexagon socket head cap screw and lock nut, hexagon socket head cap screw is from up running through vertical counter bore and connect the through-hole down in proper order, lock nut is located the upside of clamp plate and with hexagon socket head cap screw threaded connection, realizes locking.
3. The dissimilar metal plate magnetism collection-force control type magnetic pulse connection device according to claim 1, characterized in that: the power supply system comprises an energy storage capacitor, a voltage dividing resistor and a discharging switch, wherein the energy storage capacitor, the voltage dividing resistor and the discharging switch are connected between two ends of a solenoid coil in series, the discharging switch is used for controlling the on-off of current of a discharging loop, and the voltage dividing resistor is used for controlling the voltage of two ends of the energy storage capacitor.
4. The dissimilar metal plate magnetism collection-force control type magnetic pulse connection device according to claim 1, characterized in that: the outer guide seat and the solenoid coil are both made of high-conductivity materials; the flyplates are made of a highly or low conductive material.
5. The dissimilar metal plate magnetism collection-force control type magnetic pulse connection device according to claim 4, characterized in that: when the flying plate is made of a low-conductivity material, the surface of the flying plate is plated with a high-conductivity material.
6. The dissimilar metal plate magnetism collection-force control type magnetic pulse connection device according to claim 1, characterized in that: the target plate is made of a metal material; the isolation plate is made of an insulating material.
7. The dissimilar metal plate magnetism collection-force control type magnetic pulse connection device according to claim 1, characterized in that: the base and the pressing plate are both made of insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707654.6U CN210281062U (en) | 2019-05-16 | 2019-05-16 | Dissimilar metal plate magnetism collection-force control type magnetic pulse connecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707654.6U CN210281062U (en) | 2019-05-16 | 2019-05-16 | Dissimilar metal plate magnetism collection-force control type magnetic pulse connecting device |
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| CN210281062U true CN210281062U (en) | 2020-04-10 |
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|---|---|---|---|
| CN201920707654.6U Expired - Fee Related CN210281062U (en) | 2019-05-16 | 2019-05-16 | Dissimilar metal plate magnetism collection-force control type magnetic pulse connecting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026670A (en) * | 2019-05-16 | 2019-07-19 | 福州大学 | Dissimilar metal plate collection magnetic-control power formula magnetic field impulse attachment device and its working method |
| CN111659786A (en) * | 2020-06-12 | 2020-09-15 | 中南大学 | Ultrasonic vibration assisted electromagnetic lock welding device and method |
| DE102021213547A1 (en) | 2021-11-30 | 2023-06-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Device for joining an electrically conductive carrier with at least one component |
-
2019
- 2019-05-16 CN CN201920707654.6U patent/CN210281062U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026670A (en) * | 2019-05-16 | 2019-07-19 | 福州大学 | Dissimilar metal plate collection magnetic-control power formula magnetic field impulse attachment device and its working method |
| CN111659786A (en) * | 2020-06-12 | 2020-09-15 | 中南大学 | Ultrasonic vibration assisted electromagnetic lock welding device and method |
| CN111659786B (en) * | 2020-06-12 | 2021-04-27 | 中南大学 | Ultrasonic vibration assisted electromagnetic lock welding device and method |
| DE102021213547A1 (en) | 2021-11-30 | 2023-06-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Device for joining an electrically conductive carrier with at least one component |
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Granted publication date: 20200410 |
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