CN102941253A - Component assembly method and device based on electromagnetic auxiliary forming - Google Patents
Component assembly method and device based on electromagnetic auxiliary forming Download PDFInfo
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- CN102941253A CN102941253A CN2012104760546A CN201210476054A CN102941253A CN 102941253 A CN102941253 A CN 102941253A CN 2012104760546 A CN2012104760546 A CN 2012104760546A CN 201210476054 A CN201210476054 A CN 201210476054A CN 102941253 A CN102941253 A CN 102941253A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003068 static effect Effects 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
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- 230000002940 repellent Effects 0.000 abstract 1
- 239000005871 repellent Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 229940024545 aluminum hydroxide Drugs 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
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- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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Abstract
The invention discloses a component assembly method and a device based on electromagnetic auxiliary forming and belongs to the technical field of bent metal sheets. A press ram provides static pressure for inner and outer components which are stacked up and down to enable the outer component to be bent vertically for 90 degrees, and dynamic loads which exert pulse currents to a coil to produce magnetic force are exerted on a bent portion of the outer component, so that the outer component surface produces induced currents and an induced magnetic field opposite to a coil magnetic field through the act of the magnetic force to produce electromagnetic force which is repellent to the coil and larger than the yield strength of the outer component, the outer component is bent towards the inner component for 45 degrees, and the outer component is pressed to the inner component by a male die to achieve tight attaching. According to the component assembly method and the device, electromagnetic auxiliary forming is used to achieve metal plate material deformation, the forming limit of metal plate materials can be improved greatly, loaded advantages of static force and dynamic force combination are used, so that plate assembly is achieved by a pair of dies, and materials can be saved; die service lives are increased; the manufacture time of components is decreased, and the production efficiency is improved; mechanical properties of the manufactured components are improved; and green and environmental protection requirements are met.
Description
Technical field
What the present invention relates to is a kind of method of crooked metal sheet technical field, specifically a kind of component assembling method and device based on the electromagnetism assist formation.
Background technology
When two part exterior parts and inner part were fitted to each other, one of them part needed bending.For example the traditional assembly method of automobile decoration panel part comprises two stages: first bending forming is 90 ° shown in Fig. 1 left-half, then bends to 180 ° shown in Fig. 1 right half part again.Now, crooked part assembly process or in mould, be out of shape, or use as shown in Figure 2 the roller flattening-out.
Each has own pluses and minuses above-mentioned these methods.For example, need to apply very large power in order to overcome the slip of part counter roller.In addition, always can not realize on conventional equipment rolling that set up uneven radial load because single wheel rolls auxiliary equipment, this power can be damaged machine tool component.Design and manufacture equipment, flattening-out arts demand long-time, must to adopt special plane, productivity ratio lowly be that rolling assembles common disadvantage.
Find through the retrieval to prior art, the open day 2011-11-23 of Chinese patent literature 102248059A, put down in writing a kind of multistage multi-directional electromagnetic forming method, this technology adopts the quasi-steady state electric current to set up the stabilizing magnetic field zone, utilize pulse current in workpiece, to produce inductive loop, electromagnetic force between inductive loop and pulse current is ordered about workpiece and is positioned at the part of die outside to the Direction distortion away from die, and workpiece is positioned at the part of die inside to the Direction distortion near die, when the part of die inside is deformed to the stabilizing magnetic field zone, workpiece accelerated motion applying die is ordered about in inductive loop effect in stabilizing magnetic field and the workpiece, finishes shaping.But the defective of this technology is: owing to adopt " multistage multi-directional electromagnetic forming method " to cause electro-magnetic forming equipment too complicated, be difficult to apply.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of component assembling method based on the electromagnetism assist formation and device are provided, the dead load that the dynamic loading that electro-magnetic forming is provided and forcing press provide is used for the shaping fit on of two parts dexterously, the poor efficiency assembling of abandoning conventional multiple working procedure, overpaying mould.Do not need more mold exchange in the invention process process, in a secondary mould, can realize simply and easily the bending assembling of inner part and exterior part.
The present invention is achieved by the following technical solutions:
The invention provides a kind of component assembling method based on the electromagnetism assist formation, by press ram first to upper, lower overlapping in, static pressure is provided exterior part so that 90 ° of exterior part vertical curve, then the sweep of exterior part is produced the dynamic loading of magnetic force by apply pulse current in coil, by magneticaction so that exterior part surface produce induced-current and with the Induced magnetic field of coil magnetic field opposite direction, thereby generation repels each other with coil, greater than exterior part yield strength electromagnetic force, make it to crooked 45 ° of inner part, by punch exterior part is pressed to inner part at last, realize fitting tightly.
Described static pressure be act on inner part and exterior part upper and lower to mechanicals efforts.
The invention provides a kind of assembling parts device based on the electromagnetism assist formation, comprise: be used for spacing static(al) force application mechanism and with the power applying mechanism of magnetic-inductive device, wherein: static(al) force application mechanism and press top shoe are rigidly connected, inner part to be assembled and exterior part are arranged in the static(al) force application mechanism, and the power applying mechanism is symmetricly set in the both sides of exterior part.
Described static(al) force application mechanism comprises: punch case, punch and knock-pin, wherein: punch is arranged in the punch case and both are positioned at the top of inner part, and knock-pin is positioned at the below of exterior part.
Be provided with elastic parts between described punch and the punch case, the punch after finishing with realization technique-punch case separates, and guarantees that simultaneously inner part and exterior part fit tightly.
Described elastic parts is air pressure assembly, hydraulic pressure assembly or mechanical spring assembly.
Described magnetic-inductive device is arranged in the power applying mechanism and over against exterior part, the upper plane of the upper end of magnetic-inductive device and power applying mechanism is positioned at same plane.
Described magnetic-inductive device comprises: coil and charge-discharge circuit, wherein: coil is arranged on the both sides of exterior part, coil links to each other with charge-discharge circuit, this charge-discharge circuit comprises: step-up transformer, rectifier, charging resistor, capacitor and discharger, wherein: 220V or 380V alternating current boost after the rectification through inputting successively step-up transformer and rectifier after the frequency conversion, be converted into high voltage direct current to capacitor charging through charging resistor, after reaching predetermined value, the capacitor accumulation of energy connects that discharger produces By Impulsive Current and to the coil instantaneous relase, produce even strong pulsed magnetic field around the coil, magnetic field make the surface of the exterior part with electric conductivity produce induced-current and with the Induced magnetic field of coil magnetic field opposite direction.
The present invention utilizes electromagnetic force to realize that sheet metal deformation can increase substantially the forming limit of plate, and the electro-magnetic forming maximum strain is 3 times of common shapings.
The present invention uses static(al) educational level and dynamics to form the superiority that loads and is embodied in: save material; Finish assembling only using under the secondary mould; Under static load conditions, reduced active force; Owing to shortened the manufacturing time of part, reduced and make work step, thereby improved labor productivity; Improved the mechanical property of manufactured part.Electromagnetic forming technique has machining energy and is easy to the characteristics such as accurate control, forming speed is fast, the Forming Workpiece precision is high, shaping dies is simple and die life is long, equipment interoperability is strong.And whole forming process is green, environmental protection.Now be widely used in the numerous areas such as machinery, electronics, auto industry, Aero-Space, weapon industry, application prospect is very wide.
Description of drawings
Fig. 1 is the flow chart that is shaped in the mould in the prior art:
Among the figure: left figure is for curving 90 °, and right figure curves 180 °.
Fig. 2 is the flow chart that uses the roller flattening-out to be shaped in the prior art.
Fig. 3 is the example structure schematic diagram:
Among the figure: a is the original state schematic diagram; B is for using view.
Fig. 4 is power applying mechanism schematic diagram.
Fig. 5 is local enlarged diagram among Fig. 3;
Among the figure: a is exterior part original state schematic diagram; B is the end-state schematic diagram.
Fig. 6 be the present invention unlike the prior art the Principal strain ratio of manufacturing process than schematic diagram;
Among the figure: 1. be electromagnetic forming method; 2. be common forming process.
The specific embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Shown in Fig. 3 a and Fig. 3 b, present embodiment comprises: be used for spacing static(al) force application mechanism 1 and with the power force application mechanism 2 of magnetic-inductive device 9, wherein: static(al) force application mechanism 1 is rigidly connected with the press top shoe, inner part 3 and exterior part 4 to be assembled are arranged in static(al) force application mechanism 1, and power force application mechanism 2 is symmetricly set in the both sides of exterior part 4.
Described static(al) force application mechanism 1 comprises: punch case 5, punch 6 and knock-pin 7, wherein: punch 6 is arranged in the punch case 5 and both are positioned at the top of inner part 3, and knock-pin 7 is positioned at the below of exterior part 4.
Described elastic parts 8 adopts the mechanical spring assembly to realize.
As shown in Figure 4, described magnetic-inductive device 9 is arranged in the power force application mechanism 2 and over against exterior part 4, the upper plane of the upper end of magnetic-inductive device 9 and power force application mechanism 2 is positioned at same plane.
Described magnetic-inductive device 9 comprises: coil M and charge-discharge circuit, wherein: coil M is arranged on the both sides of exterior part 4, coil M links to each other with charge-discharge circuit, this charge-discharge circuit comprises: step-up transformer T, rectifier D, charging resistor R, capacitor C and discharger k, wherein: 220V or 380V alternating current boost after the rectification through inputting successively step-up transformer T and rectifier D after the frequency conversion, being converted into high voltage direct current through charging resistor R charges to capacitor C, after reaching predetermined value, capacitor C accumulation of energy connects that discharger k produces By Impulsive Current and to coil M instantaneous relase, produce even strong pulsed magnetic field around coil M, magnetic field makes the surface of the exterior part with electric conductivity produce induced-current and the Induced magnetic field opposite with coil M magnetic direction.
The rated voltage 20kV of described capacitor C, capacitance 1100 μ F.
Be 10 described release time
-3S/ time.
Described power end has high-voltage capacitance, capacitance 1100 μ F.
Such as Fig. 3 and shown in Figure 5, device is contained on the TZP-400 type hydraulic drawing press, two inner parts to be assembled 3 and exterior part 4 are inserted in the mould, when the hydraulic drawing press slide block down, it is descending to drive punch 6, inner part 3 and exterior part 4 are imposed hydrostatic pressure, and after exterior part 4 was drawn into 90 °, slide block drove punch 6 backhauls; But because the elastic force of elastic parts 8 is applied on the punch 6, punch 6 separated with punch case 5 and inner part 3 and exterior part 4 are pushed down; At this moment, magnetic inductor is connected AC power 380v, produces magnetic force, so that exterior part 4 inward at both ends bend to 45 °, deenergization, hydraulic drawing press slide block down, drive punch case 5 curved exterior part 4 at 45 ° is pressed on the inner part 3, realize that inner part 3 and exterior part 4 combinations assemble.The backhaul of hydraulic drawing press slide block, knock-pin 7 ejects sub-assembly.Like this, finish a manufacturing cycle.Subsequently, repeat again this step.Realize that a press, a secondary mould finish workpiece assembling.
Because coil is to be the vitals that magnetic field energy makes workpiece deformation with electric energy conversion, its structural design directly affects the length in height, coil service life of forming effect quality, the forming efficiency of workpiece.The structure of the coil that differing formed technique adopts varies, and is the key point of efficient application electromagnetic forming technique in conjunction with workpiece deformation characteristics coil reasonable in design.The shape of coil is different, and the deformation extent of blank various piece is not identical yet, is that structure by coil determines because offer the distribution situation of the required electromagnetic force of blank deformation.
Coil M in the present embodiment is dull and stereotyped rectangular coil loop construction, and the centre is close around rectangle, and turn-to-turn is apart from less, and bending part has round-corner transition; The wire that coil adopts is by the uniform press coil of red copper glass envelope curve coiling, and its working face is the plane, is applicable to the electro-magnetic forming of flat part.
It is that main stuffing, polyethylene polyamine are that curing agent, aluminium-hydroxide powder are that hardening constituent is mixed well cast and formed that described wire adopts epoxy resin, after the cast air set and in baking oven with 80 ℃ temperature insulation 4 hours, to guarantee the intensity of resin.Can resist preferably the interaction force of each turn-to-turn and the reaction force of plate by the coil after the cast, the intensity that has improved to a certain extent coil has prolonged the service life of coil.
As shown in Figure 6, take the 6061-T4 aluminum alloy plate materials as example, the present embodiment unlike the prior art Principal strain ratio of manufacturing process illustrates, as seen in FIG., the electro-magnetic forming maximum strain is 3 times of common shapings, and electro-magnetic forming ability of the present invention and efficient are higher than other manufacturing process.
Claims (10)
1. component assembling method based on the electromagnetism assist formation, it is characterized in that, by press ram first to upper, lower overlapping in, static pressure is provided exterior part so that 90 ° of exterior part vertical curve, then the sweep of exterior part applied the dynamic loading that produces magnetic force by apply pulse current in coil, by magneticaction so that exterior part surface produce induced-current and with the Induced magnetic field of coil magnetic field opposite direction, thereby generation repels each other with coil, greater than exterior part yield strength electromagnetic force, make it to crooked 45 ° of inner part, by punch exterior part is pressed to inner part at last, realize fitting tightly.
2. method according to claim 1 is characterized in that, described static pressure be act on inner part and exterior part upper and lower to mechanicals efforts.
3. assembling parts device of described method according to claim 1 and 2, it is characterized in that, comprise: be used for spacing static(al) force application mechanism and with the power applying mechanism of magnetic-inductive device, wherein: static(al) force application mechanism and press top shoe are rigidly connected, inner part to be assembled and exterior part are arranged in the static(al) force application mechanism, and the power applying mechanism is symmetricly set in the both sides of exterior part;
Described magnetic-inductive device comprises: coil and charge-discharge circuit, wherein: coil is arranged on the both sides of exterior part, coil links to each other with charge-discharge circuit, this charge-discharge circuit comprises: step-up transformer, rectifier, charging resistor, capacitor and discharger, wherein: 220V or 380V alternating current boost after the rectification through inputting successively step-up transformer and rectifier after the frequency conversion, be converted into high voltage direct current to capacitor charging through charging resistor, after reaching predetermined value, the capacitor accumulation of energy connects that discharger produces By Impulsive Current and to the coil instantaneous relase, produce even strong pulsed magnetic field around the coil, magnetic field make the surface of the exterior part with electric conductivity produce induced-current and with the Induced magnetic field of coil magnetic field opposite direction.
4. device according to claim 3 is characterized in that, described static(al) force application mechanism comprises: punch case, punch and knock-pin, wherein: punch is arranged in the punch case and both are positioned at the top of inner part, and knock-pin is positioned at the below of exterior part.
5. device according to claim 3 is characterized in that, is provided with elastic parts between described punch and the punch case, and the punch after finishing with realization technique-punch case separates, and guarantees that simultaneously inner part and exterior part fit tightly.
6. device according to claim 5 is characterized in that, described elastic parts is air pressure assembly, hydraulic pressure assembly or mechanical spring assembly.
7. device according to claim 3 is characterized in that, described magnetic-inductive device is arranged in the power applying mechanism and over against exterior part, the upper plane of the upper end of magnetic-inductive device and power applying mechanism is positioned at same plane.
8. device according to claim 3 is characterized in that, the rated voltage 20kV of described capacitor, capacitance 1100 μ F.
9. device according to claim 3 is characterized in that, be 10 described release time
-3S/ time.
10. device according to claim 3 is characterized in that, described coil is dull and stereotyped rectangular coil loop construction, and the centre is close around rectangle, and turn-to-turn is apart from less, and bending part has round-corner transition; The wire that coil adopts is by the uniform press coil of red copper glass envelope curve coiling, and its working face is the plane, is applicable to the electro-magnetic forming of flat part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210476054.6A CN102941253B (en) | 2012-11-21 | 2012-11-21 | Component assembly method and device based on electromagnetic auxiliary forming |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210476054.6A CN102941253B (en) | 2012-11-21 | 2012-11-21 | Component assembly method and device based on electromagnetic auxiliary forming |
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| CN102941253A true CN102941253A (en) | 2013-02-27 |
| CN102941253B CN102941253B (en) | 2015-02-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191971A (en) * | 2013-04-01 | 2013-07-10 | 哈尔滨工业大学 | Electromagnetism-assisted forming device and method for dissimilar metal composite boards |
| CN103480709A (en) * | 2013-09-09 | 2014-01-01 | 大连理工大学 | Pulse electromagnetic device for assisting line heating |
| CN106563722A (en) * | 2015-10-09 | 2017-04-19 | 沈阳俊吉科技有限公司 | Suction electromagnetic forming method and device |
| CN108405699A (en) * | 2018-04-02 | 2018-08-17 | 三峡大学 | A kind of the plate electromagnetism hemmer and method of vertical repulsive force-radial direction suction timesharing load |
| CN112719022A (en) * | 2020-12-14 | 2021-04-30 | 三峡大学 | Auxiliary electromagnetic forming device and method for coil surrounding plate |
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| US20050229376A1 (en) * | 2004-04-15 | 2005-10-20 | Herman Edmund A | Electromagnetic trimming, flanging and hemming apparatus and method |
| US20050229377A1 (en) * | 2004-04-15 | 2005-10-20 | Bradley John R | Electromagnetic flanging and hemming apparatus and method |
| JP2008229697A (en) * | 2007-03-23 | 2008-10-02 | Honda Motor Co Ltd | Hemming method and method of manufacturing panel assembly |
| US20090272166A1 (en) * | 2008-05-05 | 2009-11-05 | Ford Global Technologies, Llc | Method of using an electromagnetic forming machine to hem a plurality of panels to form a panel assembly |
| CN102512756A (en) * | 2011-12-06 | 2012-06-27 | 何宗彦 | Method and equipment for generating high-voltage pulse induction currents in object |
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2012
- 2012-11-21 CN CN201210476054.6A patent/CN102941253B/en not_active Expired - Fee Related
Patent Citations (5)
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| US20050229376A1 (en) * | 2004-04-15 | 2005-10-20 | Herman Edmund A | Electromagnetic trimming, flanging and hemming apparatus and method |
| US20050229377A1 (en) * | 2004-04-15 | 2005-10-20 | Bradley John R | Electromagnetic flanging and hemming apparatus and method |
| JP2008229697A (en) * | 2007-03-23 | 2008-10-02 | Honda Motor Co Ltd | Hemming method and method of manufacturing panel assembly |
| US20090272166A1 (en) * | 2008-05-05 | 2009-11-05 | Ford Global Technologies, Llc | Method of using an electromagnetic forming machine to hem a plurality of panels to form a panel assembly |
| CN102512756A (en) * | 2011-12-06 | 2012-06-27 | 何宗彦 | Method and equipment for generating high-voltage pulse induction currents in object |
Non-Patent Citations (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191971A (en) * | 2013-04-01 | 2013-07-10 | 哈尔滨工业大学 | Electromagnetism-assisted forming device and method for dissimilar metal composite boards |
| CN103480709A (en) * | 2013-09-09 | 2014-01-01 | 大连理工大学 | Pulse electromagnetic device for assisting line heating |
| CN106563722A (en) * | 2015-10-09 | 2017-04-19 | 沈阳俊吉科技有限公司 | Suction electromagnetic forming method and device |
| CN108405699A (en) * | 2018-04-02 | 2018-08-17 | 三峡大学 | A kind of the plate electromagnetism hemmer and method of vertical repulsive force-radial direction suction timesharing load |
| CN112719022A (en) * | 2020-12-14 | 2021-04-30 | 三峡大学 | Auxiliary electromagnetic forming device and method for coil surrounding plate |
| CN112719022B (en) * | 2020-12-14 | 2022-11-18 | 三峡大学 | Auxiliary electromagnetic forming device and method for coil surrounding plate |
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