CN105170767A - Device and method for forming metal sheet through electromagnetic attraction force - Google Patents
Device and method for forming metal sheet through electromagnetic attraction force Download PDFInfo
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- CN105170767A CN105170767A CN201510668505.XA CN201510668505A CN105170767A CN 105170767 A CN105170767 A CN 105170767A CN 201510668505 A CN201510668505 A CN 201510668505A CN 105170767 A CN105170767 A CN 105170767A
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- coil
- module
- electromagnetic
- inductor
- primary coil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a device for forming a metal sheet through electromagnetic attraction force. The device comprises an actuator which comprises an insulated shell with a built-in cavity; a cylindrical sensor which is matched with the cavity is arranged in the insulated shell; a converting primary coil is arranged in the cylindrical sensor; a terminal is led out from each of the two ends of the converting primary coil; the insulated shell includes a front insulated shell and a rear insulated shell; the front insulated shell is provided with a cylindrical groove; an electromagnetic screen, an isolating piece and a single-turn working coil are arranged in the cylindrical groove sequentially from inside to outside; the single-turn working coil is connected with the cylindrical sensor; the surface of the single-turn working coil is coated with an insulating mold; the insulating mold is provided with a mold cavity for forming the metal sheet. The invention further relates to a method for forming the metal sheet through the electromagnetic attraction force. By means of the device and the method for forming the metal sheet through the electromagnetic attraction force, the traditional electromagnetic forming repulsion force is converted to the attraction force, the coils and the mold are combined into a whole, and the matching difficulty is reduced.
Description
Technical field
The present invention relates to a kind of apparatus and method of electromagnetic attraction form metal plate.
Background technology
Electro-magnetic forming is mainly used in the forming manufacturing technology of conductive material, that a kind of electric energy conversion that utilizes is for the method for magnetic field energy form metal plate, traditional electro-magnetic forming equipment often utilizes electromagnetic repulsive force, be the metal blank electromagnetic forming device of the document introduction of CN101406913A as China Patent Publication No., comprise coil, collection chinaware, workpiece and shaping dies.Coil outer assembling collection chinaware is placed in the side of workpiece, and the working face of collection chinaware active set magnetic is near workpiece.Shaping dies is then positioned at the opposite side of workpiece, passes through pulse high current during shaping in coil, produces repulsive force promotion workpiece and make workpiece be adjacent to mould to mold movement, with this Forming Workpiece between coil and workpiece.
Described electro-magnetic forming equipment shortcoming is, first the mould of electro-magnetic forming equipment and coil are placed in the both sides of workpiece respectively, makes Whole Equipment be divided into two parts to be inconvenient to operate; Next need Forming Workpiece be closed area covering or covering time, be shaped and need to need to dismantle covering in advance oppositely arranging mould, technique and operation all complicate.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of apparatus and method of electromagnetic attraction form metal plate, transforming traditional electro-magnetic forming repulsive force is attraction, coil and die assembly is integrated, and reduces and coordinates difficulty.
For achieving the above object, the present invention adopts following technical scheme: a kind of device of electromagnetic attraction form metal plate, it is characterized in that: comprise actuator, described actuator comprises the insulation crust being provided with built-in die cavity, the tubular inductor coordinated with described die cavity is provided with in described insulation crust, be equipped with a conversion primary coil in described tubular inductor, terminals are drawn at the two ends of described conversion primary coil respectively; Described insulation crust comprises front insulation crust and rear insulation crust, described front insulation crust offers cylindrical groove, electromagnetic screen, spacer and single turn actuating coil is disposed with from inside to outside in described cylindrical groove, described single turn actuating coil is connected with described tubular inductor, described single turn actuating coil Surface coating has insulation mould, and described insulation mould is provided with the mold cavity of form metal plate.
Further, also comprise power-supply system, described power-supply system comprises control module, charging module, energy-storage module, discharge module and Executive Module, and described Executive Module comprises described conversion primary coil, tubular inductor, electromagnetic screen, single turn actuating coil and metal blank; Described control module is connected with described charging module, discharge module, Executive Module respectively, and described charging module is connected to energy-storage module two ends, and energy-storage module is also connected with discharge module; Described discharge module is connected with the conversion primary coil of described Executive Module; Described primary coil is wrapped in tubular inductor, and the lead-in wire of described tubular inductor output and single-turn circular coil is electrically connected; Described single-turn circular coil is placed between described electromagnetic screen and metal blank.
Further, the described discharge module electric current be applied in primary coil is sinusoidal decay electric current, and the frequency of described sinusoidal decay electric current meets
, in formula:
for frequency;
for metal blank magnetic conductivity;
for metal blank electrical conductivity;
for metal blank thickness.
Further, the perimembranous of described rear insulation crust is provided with one handle retainer ring, and described handle retainer ring both sides correspondence is provided with two handles.
Further, described single turn actuating coil is annular scale copper, and the side of described annular scale copper offers coil groove, draws the connecting plate perpendicular to described annular scale copper along described coil groove.
Further, the rectangular channel passed for described connecting plate is offered bottom described cylindrical groove.
Further, described tubular inductor offers the inductor groove consistent with described coil groove direction, described tubular inductor is also provided with near described single turn actuating coil side the installation end face matched with described connecting plate, and described connecting plate and described installation end face are fixed.
Further, the interlayer of described conversion primary coil arranges insulation, to be helically wound around on tubular inductor; Described tubular inductor and described conversion primary coil are fixed with a stationary magazine creel.
A method for electromagnetic attraction form metal plate, is characterized in that comprising the following steps:
Step S1: described control module controls described charging module and charges to described energy-storage module;
Step S2: described control module controls described discharge module and discharged by the electric energy stored in described energy-storage module and apply pulse high current to the conversion primary coil in described Executive Module;
Step S4: described conversion primary coil, to described tubular inductor generation electromagnetic induction, accumulates electromotive force at the inductor groove two ends of described tubular inductor;
Step S5: because described single turn actuating coil is connected with the inductor groove two ends of described tubular inductor, the electric current that described electromotive force produces a low frequency amplitude is applied in described single turn actuating coil, completes the process of pulses switch;
Step S6: after described single turn actuating coil is applied in the electric current of described low frequency amplitude, described electromagnetic screen and metal blank all produce eddy current, because electromagnetic screen is fixed in described cylindrical groove, the effect that described metal blank is subject to electromagnetic force is moved to described electromagnetic screen;
Step S7: described metal blank and described insulation contacting dies, be squeezed into the shape of mold cavity.
The present invention compared with prior art has following beneficial effect:
1, the present invention transforms traditional electro-magnetic forming repulsive force is attraction, coil and die assembly can be integrated, and reduces and coordinates difficulty;
2, the present invention is by changing the effect of primary coil and tubular inductor, by the electric current of low capacitance output low frequency amplitude, improves plastic force;
3, actuator of the present invention is comparatively light, and hand-heldly can complete sheet forming, applicability is strong.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the embodiment of the present invention.
Fig. 2 is the actuator cut-away illustration of the embodiment of the present invention.
Fig. 3 is that Fig. 2 is along A-A cut-away illustration.
Fig. 4 is that Fig. 3 is along B place partial enlarged drawing.
Fig. 5 is the single turn actuating coil schematic diagram of the embodiment of the present invention.
Fig. 6 is the leading section schematic diagram of the insulation crust of the embodiment of the present invention.
Fig. 7 is tubular inductor and the internal structure schematic diagram thereof of the embodiment of the present invention
In figure: 1-insulate mould; 11-mold cavity; 12-handle retainer ring; 13-handle; 14-metal blank; 2-single turn actuating coil; 21-connecting plate; 22-installing hole; 23-coil groove; 3-spacer; 30-screw; 4-electromagnetic screen; Insulation crust before 5-; 51-cylindrical groove; 52-rectangular channel; 53-fixing hole; 54-connecting plate fixing hole; 6-tubular inductor; 61-inductor groove; 62-installs end face; 7-fixes inner core; 71-inner core groove; 72-spiral slot; 73-through hole; 8-changes primary coil; 81-terminals; 82-wire; Insulation crust after 9-; 10-bonnet; 101-bores a hole; 131-control module; 132-charging module; 133-energy-storage module; 134-discharge module; 135-Executive Module.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
Please refer to Fig. 2 to Fig. 4, the invention provides a kind of device of electromagnetic attraction form metal plate, comprise an actuator, described actuator comprises the insulation crust of a built-in die cavity, described insulation crust comprises front insulation crust 5 and rear insulation crust 9, a tubular inductor 6 coordinated with described die cavity is provided with in described insulation crust, a conversion primary coil 8 is equipped with in described tubular inductor 6, the interlayer of described conversion primary coil 8 arranges insulation, (Fig. 7 is please refer to) to be helically wound around on tubular inductor, terminals 81 are drawn respectively for being connected with the both positive and negative polarity of described discharge module in the two ends of described conversion primary coil 8, described front insulation crust offers a cylindrical groove 51, an electromagnetic screen 4 is disposed with from inside to outside in described cylindrical groove 51, one spacer 3 and a single turn actuating coil 2, wherein said electromagnetic screen 4 is all circular sheet with spacer 3, described single turn actuating coil 2 is connected with described tubular inductor 6, described single turn actuating coil 2 Surface coating has an insulation mould 1, described insulation mould 1 is provided with the mold cavity 11 of decision metal blank 14 shape, the rear portion of described rear insulation crust 9 is provided with a bonnet 10, described bonnet 10 is provided with a perforation 101 of passing for the wire 82 be connected with described terminals 81, the perimembranous of described rear insulation crust 9 is provided with one handle retainer ring 12, described handle retainer ring 12 both sides correspondence is provided with two handles 13.
Please refer to Fig. 5 and Fig. 7, described single turn actuating coil 2 is annular scale copper, the side of described annular scale copper offers coil groove 23, drawing the connecting plate 21 perpendicular to described annular scale copper along described coil groove 23, described connecting plate 21 being provided with for carrying out with described tubular inductor 6 installing hole 22 that is connected.
Please refer to Fig. 6, offer the rectangular channel 52 passed for described connecting plate 21 bottom described cylindrical groove 51, the perimembranous of described front insulation crust 5 offers the connecting plate fixing hole 54 that matches with described screw 30 and some fixing holes 53 for being fixed with described tubular inductor 6.
Please refer to Fig. 3 and Fig. 7, described tubular inductor 6 profile is cylinder barrel shaped, offer the inductor groove 61 consistent with described coil groove 23 direction in the axial direction, described tubular inductor 6 is also provided with the installation end face 62 matched with described connecting plate 21 near described single turn actuating coil 2 side, described connecting plate 21 is fixed through screw 30 and described installation end face 62, described tubular inductor 6 is fixed with a stationary magazine creel 7 with described conversion primary coil 8, described stationary magazine creel 7 shape is tubular, it axially offers the inner core groove 71 consistent with described coil groove 23 direction, the outer surface of described stationary magazine creel 7 is processed with the spiral slot matched with described conversion primary coil, and draw two terminals 81 places be provided with through hole 73 at conversion primary coil 8.
Please refer to Fig. 1, also comprise a power-supply system, described power-supply system comprises control module 131, charging module 132, energy-storage module 133, discharge module 134 and an Executive Module 135, and described Executive Module 135 comprises the conversion primary coil 8 be arranged in described actuator, tubular inductor 6, electromagnetic screen 4, single turn actuating coil 2 and metal blank 14; Described control module 131 is connected with described charging module 132, discharge module 134, Executive Module 135 respectively, described charging module 132 is connected in parallel on described energy-storage module 133 two ends with discharge module 134, and described discharge module 134 is connected with the conversion primary coil 8 of described Executive Module 135.Described control module 131 exists with charging module 132, discharge module 134 and Executive Module 135 to be fed back, the parameter feedback of concrete reception conversion primary coil 8, and can control startup and the closedown of charging module 132 and discharge module 134.
A method for electromagnetic attraction form metal plate, is characterized in that comprising the following steps:
Step S1: described control module 131 controls described charging module 132 and charges to described energy-storage module 133;
Step S2: described control module 131 controls described discharge module 134 and discharged by the electric energy stored in described energy-storage module 133 and apply a pulse high current to the conversion primary coil 8 in described Executive Module 135;
Step S4: described conversion primary coil 8, to described tubular inductor 6, electromagnetic induction occurs, at inductor groove 61 two ends of described tubular inductor 6 accumulation electromotive force;
Step S5: because described single turn actuating coil 2 is connected with inductor groove 61 two ends of described tubular inductor 6, the electric current that described electromotive force produces a low frequency amplitude is applied in described single turn actuating coil 2, completes the process of pulses switch;
Step S6: after described single turn actuating coil 2 is applied in the electric current of described low frequency amplitude, described electromagnetic screen 4 with metal blank 14 all produces eddy current, requires according to Kelvin effect the frequency being applied to single-turn circular coil actuating coil 2
enough low, namely meet the requirement of following formula:
In formula:
for frequency;
for metal blank magnetic conductivity;
for metal blank electrical conductivity;
for metal blank thickness.
Inductive loop direction waveform then owing to producing in electromagnetic screen 4 and metal blank 14 is all basically identical, when both close proximity, can cancel out each other a part in the magnetic field that electromagnetic screen 4 and metal blank 14 eddy current produce, be equivalent to like this and the magnetic field between electromagnetic screen 4 and metal blank 14 is eliminated, and the inductive loop on both lateral surfaces will produce electromagnetic force both is pushed to centre, because electromagnetic screen 4 is fixed in described cylindrical groove 51, the effect that described metal blank 14 is subject to electromagnetic force is moved to described electromagnetic screen 4;
Step S7: described metal blank 14 contacts with described insulation mould 1, is squeezed into the shape of mold cavity 11.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. the device of an electromagnetic attraction form metal plate, it is characterized in that: comprise actuator, described actuator comprises the insulation crust being provided with built-in die cavity, the tubular inductor coordinated with described die cavity is provided with in described insulation crust, be equipped with a conversion primary coil in described tubular inductor, terminals are drawn at the two ends of described conversion primary coil respectively; Described insulation crust comprises front insulation crust and rear insulation crust, described front insulation crust offers cylindrical groove, electromagnetic screen, spacer and single turn actuating coil is disposed with from inside to outside in described cylindrical groove, described single turn actuating coil is connected with described tubular inductor, described single turn actuating coil Surface coating has insulation mould, and described insulation mould is provided with the mold cavity of form metal plate.
2. the device of electromagnetic attraction form metal plate according to claim 1, it is characterized in that: also comprise power-supply system, described power-supply system comprises control module, charging module, energy-storage module, discharge module and Executive Module, and described Executive Module comprises described conversion primary coil, tubular inductor, electromagnetic screen, single turn actuating coil and metal blank; Described control module is connected with described charging module, discharge module, Executive Module respectively, and described charging module is connected to energy-storage module two ends, and energy-storage module is also connected with discharge module; Described discharge module is connected with the conversion primary coil of described Executive Module; Described primary coil is wrapped in tubular inductor, and the lead-in wire of described tubular inductor output and single-turn circular coil is electrically connected; Described single-turn circular coil is placed between described electromagnetic screen and metal blank.
3. the device of electromagnetic attraction form metal plate according to claim 2, is characterized in that: the described discharge module electric current be applied in primary coil is sinusoidal decay electric current, and the frequency of described sinusoidal decay electric current meets
, in formula:
for frequency;
for metal blank magnetic conductivity;
for metal blank electrical conductivity;
for metal blank thickness.
4. the device of electromagnetic attraction form metal plate according to claim 1, is characterized in that: the perimembranous of described rear insulation crust is provided with one handle retainer ring, and described handle retainer ring both sides correspondence is provided with two handles.
5. the device of electromagnetic attraction form metal plate according to claim 1, it is characterized in that: described single turn actuating coil is annular scale copper, the side of described annular scale copper offers coil groove, draws the connecting plate perpendicular to described annular scale copper along described coil groove.
6. the device of electromagnetic attraction form metal plate according to claim 5, is characterized in that: offer the rectangular channel passed for described connecting plate bottom described cylindrical groove.
7. the device of electromagnetic attraction form metal plate according to claim 5, it is characterized in that: described tubular inductor offers the inductor groove consistent with described coil groove direction, described tubular inductor is also provided with near described single turn actuating coil side the installation end face matched with described connecting plate, and described connecting plate and described installation end face are fixed.
8. the device of electromagnetic attraction form metal plate according to claim 1, is characterized in that: the interlayer of described conversion primary coil arranges insulation, to be helically wound around on tubular inductor; Described tubular inductor and described conversion primary coil are fixed with a stationary magazine creel.
9., based on a method for the electromagnetic attraction form metal plate of the device of the electromagnetic attraction form metal plate described in any one of claim 1 to 8, it is characterized in that comprising the following steps:
Step S1: described control module controls described charging module and charges to described energy-storage module;
Step S2: described control module controls described discharge module and discharged by the electric energy stored in described energy-storage module and apply pulse high current to the conversion primary coil in described Executive Module;
Step S4: described conversion primary coil, to described tubular inductor generation electromagnetic induction, accumulates electromotive force at the inductor groove two ends of described tubular inductor;
Step S5: because described single turn actuating coil is connected with the inductor groove two ends of described tubular inductor, the electric current that described electromotive force produces a low frequency amplitude is applied in described single turn actuating coil, completes the process of pulses switch;
Step S6: after described single turn actuating coil is applied in the electric current of described low frequency amplitude, described electromagnetic screen and metal blank all produce eddy current, because electromagnetic screen is fixed in described cylindrical groove, the effect that described metal blank is subject to electromagnetic force is moved to described electromagnetic screen;
Step S7: described metal blank and described insulation contacting dies, be squeezed into the shape of mold cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510668505.XA CN105170767B (en) | 2015-10-13 | 2015-10-13 | Device and method for forming metal sheet through electromagnetic attraction force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510668505.XA CN105170767B (en) | 2015-10-13 | 2015-10-13 | Device and method for forming metal sheet through electromagnetic attraction force |
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| Publication Number | Publication Date |
|---|---|
| CN105170767A true CN105170767A (en) | 2015-12-23 |
| CN105170767B CN105170767B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510668505.XA Expired - Fee Related CN105170767B (en) | 2015-10-13 | 2015-10-13 | Device and method for forming metal sheet through electromagnetic attraction force |
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|---|---|
| CN (1) | CN105170767B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193546A (en) * | 2019-06-24 | 2019-09-03 | 华中科技大学 | A kind of device and method of single supply unicoil electromagnetic attraction form metal plate |
| WO2023010868A1 (en) * | 2021-08-04 | 2023-02-09 | 南京迪威尔高端制造股份有限公司 | Magnetic particle inspection apparatus for annular workpiece |
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|---|---|---|---|---|
| US4135379A (en) * | 1976-09-27 | 1979-01-23 | Boeing Commercial Airplane Company | Portable head for electromagnetic pulling |
| US4986102A (en) * | 1989-05-23 | 1991-01-22 | The Boeing Company | Electromagnetic dent remover with tapped work coil |
| WO2006119661A1 (en) * | 2005-05-12 | 2006-11-16 | Ralph Meichtry | Dent removing method and device |
| CN101406913A (en) * | 2007-10-10 | 2009-04-15 | 财团法人金属工业研究发展中心 | Electromagnetic forming device of sheet metal |
| CN101653803A (en) * | 2008-08-22 | 2010-02-24 | 首都航天机械公司 | Corrugated tube port magnetic-pulse precision corrector |
| KR20140078086A (en) * | 2012-12-17 | 2014-06-25 | 서강대학교산학협력단 | Magnetic interactual pulling type sheet forming apparatus |
| CN205110492U (en) * | 2015-10-13 | 2016-03-30 | 福州大学 | Shaping sheet metal material's of electromagnetic attraction power device |
-
2015
- 2015-10-13 CN CN201510668505.XA patent/CN105170767B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4135379A (en) * | 1976-09-27 | 1979-01-23 | Boeing Commercial Airplane Company | Portable head for electromagnetic pulling |
| US4986102A (en) * | 1989-05-23 | 1991-01-22 | The Boeing Company | Electromagnetic dent remover with tapped work coil |
| WO2006119661A1 (en) * | 2005-05-12 | 2006-11-16 | Ralph Meichtry | Dent removing method and device |
| CN101406913A (en) * | 2007-10-10 | 2009-04-15 | 财团法人金属工业研究发展中心 | Electromagnetic forming device of sheet metal |
| CN101653803A (en) * | 2008-08-22 | 2010-02-24 | 首都航天机械公司 | Corrugated tube port magnetic-pulse precision corrector |
| KR20140078086A (en) * | 2012-12-17 | 2014-06-25 | 서강대학교산학협력단 | Magnetic interactual pulling type sheet forming apparatus |
| CN205110492U (en) * | 2015-10-13 | 2016-03-30 | 福州大学 | Shaping sheet metal material's of electromagnetic attraction power device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193546A (en) * | 2019-06-24 | 2019-09-03 | 华中科技大学 | A kind of device and method of single supply unicoil electromagnetic attraction form metal plate |
| CN110193546B (en) * | 2019-06-24 | 2020-07-10 | 华中科技大学 | Device and method for forming metal plate by single-power-supply single-coil electromagnetic attraction |
| WO2023010868A1 (en) * | 2021-08-04 | 2023-02-09 | 南京迪威尔高端制造股份有限公司 | Magnetic particle inspection apparatus for annular workpiece |
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| Publication number | Publication date |
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| CN105170767B (en) | 2017-05-10 |
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