CN102248273A - Electromagnetic pulse force and mechanical force composite cold pressure welding device - Google Patents
Electromagnetic pulse force and mechanical force composite cold pressure welding device Download PDFInfo
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- CN102248273A CN102248273A CN2011101583314A CN201110158331A CN102248273A CN 102248273 A CN102248273 A CN 102248273A CN 2011101583314 A CN2011101583314 A CN 2011101583314A CN 201110158331 A CN201110158331 A CN 201110158331A CN 102248273 A CN102248273 A CN 102248273A
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Abstract
The invention relates to an electromagnetic pulse force and mechanical force composite cold pressure welding device. The electromagnetic pulse force and mechanical force composite cold pressure welding device comprises a mechanical stamping mechanism and an electromagnetic auxiliary mechanism arranged below the mechanical stamping mechanism, wherein the mechanical stamping mechanism comprises a servo motor; an output shaft of the servo motor is provided with a fly wheel; the fly wheel is connected with the upper part of a screw rod through a clutch; the lower part of the screw rod is connected with a plunger chip; the electromagnetic auxiliary mechanism comprises a magnetic trap; an electromagnetic coil is arranged below the magnetic trap and is connected with a load resistor through a switch to form a loop; the loop is connected with input voltage through a transformer; and a capacitor is connected with the load resistor in parallel. The electromagnetic pulse force and mechanical force composite cold pressure welding device combines stamping and electromagnetic forming and assists the stamping force in obtaining a joint by the electromagnetic force, so working efficiency can be improved, pits and rebound in the stamping process can be reduced, energy is saved and emission is reduced, and safety and availability of connection of dissimilar metal and metal with different thicknesses can be guaranteed.
Description
Technical field
The present invention relates to the cold welding field of metallic plate, be specifically related to the compound cold welding device of a kind of electromagnetic pulse power and mechanical force.
Background technology
The covering that automobile, aircraft are used not only needs to have certain intensity and higher combination property, also will consider the problem of the energy-conservation loss of weight of automobile, aircraft simultaneously.In order to realize the vehicle energy saving loss of weight, except will selecting suitable material, also to select suitable interconnection technique.Automobile, aircraft more will be taken care except energy-saving and emission-reduction in the process of operation, and at this target, people have taked in the selection to material outside the requirement of intimate harshness, also select the best connected mode of combination property simultaneously.
Along with people to safety, energy-conservation, the new demand that reduce discharging to propose, connected mode is also weeded out the old and bring forth the new gradually.Be connected to cold welding from hot weld, bolt connection, rivet.The research of cold welding at present only only limits to being connected of bar and wire rod and tubing.Simultaneously, mainly be at non-ferrous metal at the material that is fit to cold welding, but these metals deposit on earth is not inexhaustible, the application of new material is again the main method that solves this contradiction.Cold welding can connect the non-ferrous metal of good toughness, but aircraft and the automobile particularity in running, and the material of some parts often is not a non-ferrous metal, therefore in welding process, selects cold welding can not realize firm joint.For the lower material of some fusing points, hot weld more is not a good connected mode.Yet for some ferrous metal and hard metal, utilize the bigger stamping press of cold welding can not realize joint, also uncombined phenomenon that ftractures can occur.
Powerful plastic deformation takes place in the acting in conjunction of pulse magnet field force and mechanical stamping power in material, when two plates are enough approaching, then will form solid-state joint.In connection procedure, electromagnetic force mainly quickened plate in conjunction with speed, two plates are under powerful plastic deformation situation, the surface infinitely is close to the distance that forms atomic bond, forms firm joint under less stamping press effect.Mechanical stamping power derives from servomotor, utilizes the motion of servomotor control drift, and by clutch servomotor is separated with leading screw, and leading screw drives pressure head and carries out axial feed motion, and the auxiliary selenoid impulsive force obtains welding point.
Automobile mainly adopts high strength steel plate as covering at present, and high strength steel plate can reduce cost economically, but the connection of high strength steel plate can not realize the connected mode of cold welding.
Not all material all is non-ferrous metal or high strength steel plate in fields such as automobile, aircrafts, the material of some materials that are difficult to weld, different-thickness, the material of unlike material are difficult to a unified welding method material are welded when connecting.Especially the use of aviation field titanium alloy should guarantee that material has better comprehensive performance, can realize the effect of energy-saving and emission-reduction again, yet the solder technology of titanium alloy is a technology that is difficult to grasp.The weldability that the present invention is primarily aimed at some welding-resistant metals solves connectivity problem.The Massachusetts Institute of Technology is primarily aimed at the magnetic discharge welding of tubing and has done a large amount of research, but to the not research of concluding property of magnetic discharge welding of plate.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide the compound cold welding device of a kind of electromagnetic pulse power and mechanical force, utilize the auxiliary stamping press of electromagnetic pulse power to obtain the cold welding joint, can increase work efficiency, can reduce pit and the resilience in punching course again, thereby realize the target of energy-saving and emission-reduction, and guaranteed security and validity that dissimilar metal, different-thickness metal connect.
In order to achieve the above object, the technical scheme taked of the present invention is:
The cold welding device that a kind of electromagnetic pulse power and mechanical force are compound comprises mechanical stamping mechanism and electromagnetism auxiliary body, is provided with electromagnetism auxiliary body below mechanical stamping mechanism;
Mechanical stamping mechanism comprises servomotor 1, disposes flywheel 2 on the output shaft of servomotor 1, and flywheel 2 is connected by the top of clutch 3 and leading screw 4, and the bottom of leading screw 4 is connected with drift 5;
Electromagnetism auxiliary body comprises collection chinaware 8, and the below of collection chinaware 8 is provided with solenoid 9;
Solenoid 9 connects into the loop by K switch and load resistance R, and capacitor C is in parallel with load resistance R, and load resistance R two ends are connected with input voltage U by transformer A.
Effect of the present invention: because the present invention is in conjunction with punching press and electro-magnetic forming, utilize the auxiliary stamping press of electromagnetic force to obtain joint, can increase work efficiency, can reduce pit and the resilience in punching course again, thereby realize the target of energy-saving and emission-reduction, guaranteed security and validity that dissimilar metal, different-thickness metal connect.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the circuit diagram of solenoid 9 of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done detailed description.
With reference to Fig. 1, the cold welding device that a kind of electromagnetic pulse power and mechanical force are compound comprises mechanical stamping mechanism and electromagnetism auxiliary body, is provided with electromagnetism auxiliary body below mechanical stamping mechanism;
Mechanical stamping mechanism comprises servomotor 1, disposes flywheel 2 on the output shaft of servomotor 1, and flywheel 2 is connected by the top of clutch 3 and leading screw 4, and the bottom of leading screw 4 is connected with drift 5;
Electromagnetism auxiliary body comprises collection chinaware 8, and the below of collection chinaware 8 is provided with solenoid 9;
With reference to Fig. 2, solenoid 9 connects into the loop by K switch and load resistance R, and capacitor C is in parallel with load resistance R, and load resistance R two ends are connected with input voltage U by transformer A, when K switch is opened, and the capacitor C charging, solenoid 9 is not worked; When K switch is closed, the capacitor C discharge, solenoid 9 is started working, and promptly solenoid 9 produces pulsed magnetic field, and collection chinaware 8 can be strengthened magnetic field force, reduces leakage field, reduces the loss of energy.
Operation principle of the present invention is:
The process of the auxiliary cold welding of electromagnetic force and mechanical force is actually the couple of force that mechanical force and electromagnetic force act on the workpiece simultaneously and closes process, the process of the stronger a kind of electromagnetic pulse forming of deformation extent just, electromagnetic force has been quickened the movement velocity of plate, improve the formability of material, improved the distribution of ess-strain, suppress wrinkling, effectively control resilience, but the inhomogeneities of electromagnetic force makes simple magnetic discharge welding the shortcoming that stress is concentrated occur in the process of welding, and adopts mechanical force to replenish its inhomogeneities in the time of work.Solenoid discharges moment, mechanical force acts on simultaneously, two plates are with the different velocity magnitude off-line circle direction fast moving that supports or opposes, because all electromagnetic force differences are lower than nearer plate away from the plate speed of solenoid, impose suitable mechanical stamping power again, strong plastic deformation successively takes place in two plates, finally is combined into one, after the impulsive force contact, welding point forms.
With reference to Fig. 1, during work, first plate 6 of cold welding and the centre that second plate 7 is placed on drift 5 and collection chinaware 8 will be needed, with reference to Fig. 2, connect power supply for solenoid 9, suppose according to Maxwell's eddy electric field, because the induction field that the variation of magnetic induction intensity produces on first plate 6 and second plate 7 is a kind of rotational field, the power line that it is set up is fixed, again because first plate 6 and second plate 7 are conductive material, so there is induced-current, first plate 6 and second plate 7 are very thin, be that the eddy current that thickness of slab causes is not considered, only along the induced-current on first plate 6 and second plate, 7 planes, electromagnetic force is as explosive welding (EW), fast speeds realizes that easily the result of jet action washes away or known that two metals treat the oxide layer and the adsorption layer of composite surface, under high pressure combined closely in the metal surface of two cleanings and form metallic bond, but because the energy of domestic electromagnetic equipment is lower, can not produce enough energy and realize the combination of electro-magnetic forming or even two metal surfaces, therefore the present invention utilizes the electromagnetism stamping press to cover the shortage, utilize servomotor 1 by flywheel 2 in the present invention, clutch 3, leading screw 4 drives drift 5 and obtains welding point, drive in the process of punching press at servomotor 1, energy need not storage, servomotor does not need to rotate always yet, only starts and provide the energy of needs when punching press.
Concrete technology is:
1 pre-welding treatment: first plate 6 and second plate, 7 surfaces to be welded are welded preceding preliminary treatment, clean surface greasy dirt and oxide-film, the contact area of increase plate; The making of solenoid 9 provides cold welding needed portion of energy; Calculate the energy that stamping press provides according to gross energy, the servomotor running status be set,
The 2 solenoids discharge while, servomotor acts on simultaneously, complementary deficiency in welding process,
3 after welding treatment: check the weld seam situation, handle, guarantee the reliability of first plate 6 and second plate, 7 weld seams for the metal of extruding.
Claims (1)
1. electromagnetic pulse power and the compound cold welding device of mechanical force is characterized in that: comprise mechanical stamping mechanism and electromagnetism auxiliary body, be provided with electromagnetism auxiliary body below mechanical stamping mechanism;
Mechanical stamping mechanism comprises servomotor (1), disposes flywheel (2) on the output shaft of servomotor (1), and flywheel (2) is connected by the top of clutch (3) and leading screw (4), and the bottom of leading screw (4) is connected with drift (5);
Electromagnetism auxiliary body comprises collection chinaware (8), and the below of collection chinaware (8) is provided with solenoid (9);
Solenoid (9) connects into the loop by K switch and load resistance R, and capacitor C is in parallel with load resistance R, and load resistance R two ends are connected with input voltage U by transformer A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110158331.4A CN102248273B (en) | 2011-06-14 | 2011-06-14 | Electromagnetic pulse force and mechanical force composite cold pressure welding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110158331.4A CN102248273B (en) | 2011-06-14 | 2011-06-14 | Electromagnetic pulse force and mechanical force composite cold pressure welding device |
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| CN102248273A true CN102248273A (en) | 2011-11-23 |
| CN102248273B CN102248273B (en) | 2014-11-05 |
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| CN201110158331.4A Expired - Fee Related CN102248273B (en) | 2011-06-14 | 2011-06-14 | Electromagnetic pulse force and mechanical force composite cold pressure welding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581466A (en) * | 2012-02-23 | 2012-07-18 | 西安交通大学 | Two-stage planet wheel control cold-pressure welding device and cold-pressure welding method thereof |
| CN110681760A (en) * | 2019-09-29 | 2020-01-14 | 华中科技大学 | Electromagnetic pulse hole flanging forming device for thick plate or thick arc-shaped part |
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| CN101073853A (en) * | 2007-07-16 | 2007-11-21 | 侯贤德 | Method for agitating, fricting and welding cooling friction head and heat-connecting material |
| EP1935551A1 (en) * | 2006-12-18 | 2008-06-25 | GM Global Technology Operations, Inc. | Method and apparatus for magnetic impulse welding of sheets, one of the sheets having at least one attachment region inclined at an angle to the sheet plane ; Component of a vehicle part having such an attachment region |
| CN201181713Y (en) * | 2008-04-30 | 2009-01-14 | 晶能光电（江西）有限公司 | Flip-chip bonding structure of indium gallium aluminum nitrogen epitaxial wafer |
| US20100059254A1 (en) * | 2008-09-08 | 2010-03-11 | Yazaki Corporation | Conductor module and electromagnetic welding method |
| CN102059444A (en) * | 2010-12-24 | 2011-05-18 | 株洲中车纽兰博科技实业有限公司 | Method and device for welding lamp body and lamp mirror of vehicle lamp |
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2011
- 2011-06-14 CN CN201110158331.4A patent/CN102248273B/en not_active Expired - Fee Related
Patent Citations (5)
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| EP1935551A1 (en) * | 2006-12-18 | 2008-06-25 | GM Global Technology Operations, Inc. | Method and apparatus for magnetic impulse welding of sheets, one of the sheets having at least one attachment region inclined at an angle to the sheet plane ; Component of a vehicle part having such an attachment region |
| CN101073853A (en) * | 2007-07-16 | 2007-11-21 | 侯贤德 | Method for agitating, fricting and welding cooling friction head and heat-connecting material |
| CN201181713Y (en) * | 2008-04-30 | 2009-01-14 | 晶能光电（江西）有限公司 | Flip-chip bonding structure of indium gallium aluminum nitrogen epitaxial wafer |
| US20100059254A1 (en) * | 2008-09-08 | 2010-03-11 | Yazaki Corporation | Conductor module and electromagnetic welding method |
| CN102059444A (en) * | 2010-12-24 | 2011-05-18 | 株洲中车纽兰博科技实业有限公司 | Method and device for welding lamp body and lamp mirror of vehicle lamp |
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| 耿长刚: "铝合金油箱壳体电磁成形复合冲压试验研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581466A (en) * | 2012-02-23 | 2012-07-18 | 西安交通大学 | Two-stage planet wheel control cold-pressure welding device and cold-pressure welding method thereof |
| CN102581466B (en) * | 2012-02-23 | 2015-04-15 | 西安交通大学 | Two-stage planet wheel control cold-pressure welding device and cold-pressure welding method thereof |
| CN110681760A (en) * | 2019-09-29 | 2020-01-14 | 华中科技大学 | Electromagnetic pulse hole flanging forming device for thick plate or thick arc-shaped part |
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| Publication number | Publication date |
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| CN102248273B (en) | 2014-11-05 |
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Granted publication date: 20141105 Termination date: 20170614 |