CN112246952A - Electromagnetic micro-blanking method and device based on self-excitation principle - Google Patents
Electromagnetic micro-blanking method and device based on self-excitation principle Download PDFInfo
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- CN112246952A CN112246952A CN202011098716.1A CN202011098716A CN112246952A CN 112246952 A CN112246952 A CN 112246952A CN 202011098716 A CN202011098716 A CN 202011098716A CN 112246952 A CN112246952 A CN 112246952A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 238000005192 partition Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/002—Drive of the tools
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/42—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by magnetic means, e.g. electromagnetic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses an electromagnetic micro-blanking method and device based on a self-excitation principle, wherein a self-excitation electromagnetic device is used as a power supply device to be combined with a micro-blanking device, based on the self-excitation principle, when a discharge switch is closed, two coils simultaneously generate two discharge currents in opposite directions, the discharge currents in different directions interact to generate magnetic field repulsion force to push an amplifier to extrude downwards, electromagnetic force is transmitted to a metal sheet micro-blanking forming area, the metal sheet micro-blanking is realized, and the blanking efficiency is high. The self-excitation electromagnetic blanking device has higher efficiency and can provide larger blanking force, and the structure of the amplifier can ensure that the transmission of the electromagnetic force is more uniformly acted on the surface of the metal sheet, thereby improving the quality of a workpiece.
Description
Technical Field
The invention relates to the technical field of electromagnetic micro-forming, in particular to an electromagnetic micro-blanking method and device based on a self-excitation principle.
Background
Electromagnetic forming refers to a process of forming metal using magnetic force. The capacitor and the control switch form a discharge loop, instantaneous current generates a strong magnetic field through the working coil, and simultaneously, induced current and a magnetic field are generated in the metal workpiece, so that the workpiece is formed under the action of the magnetic field force.
The requirement on the dimensional precision is very high when various metal sheet parts such as oil (steam) nozzles, microelectronic integrated circuits, aerospace electronics, lead frames and the like are finely processed. However, the existing electromagnetic micro-blanking device is inconvenient in electromagnetic blanking parameter adjustment, and the precision and the processing quality are to be improved.
Disclosure of Invention
The invention aims to solve the technical problems and provides an electromagnetic micro-blanking method and device based on a self-excitation principle, which can enable electromagnetic blanking parameters to be adjusted more conveniently and have higher precision and improve the quality of workpieces.
In order to solve the technical problems, the invention adopts the following technical scheme.
An electromagnetic micro-blanking method based on a self-excitation principle is characterized by comprising the following steps:
the self-excitation electromagnetic device is used as a power supply device to be combined with a micro-blanking device, the power supply device is provided with two coils, each coil is provided with a respective discharge loop, based on the self-excitation principle, when the two coils are closed at a discharge switch, the two coils simultaneously generate two discharge currents in opposite directions, the discharge currents in different directions interact to generate magnetic field repulsion force, one coil is fixed on an amplifier device of the micro-blanking device, the magnetic field repulsion force generated by the two coils is downwards extruded through the amplifier device, and the micro-blanking device realizes the micro-blanking of the metal sheet by utilizing the electromagnetic force transmitted to a micro-blanking forming area of the metal sheet.
Further, the discharge parameters of the two coils can be adjusted respectively, and the magnetic field repulsion is formed jointly through the adjustment control of the two coils.
Furthermore, the amplifier device transmits magnetic field repulsive force by extruding the flexible medium, and completes blanking and forming of the metal sheet under the combined action of the amplifier device and the female die.
The other technical scheme provided by the invention is as follows:
the utility model provides an electromagnetism is punching device a little based on self-excitation formula principle which characterized in that: comprises a self-excitation electromagnetic power device and a metal sheet micro-blanking forming device;
the self-excitation electromagnetic power device comprises an upper die holder, a coil framework, an upper coil, a partition plate, a lower coil, an amplifier device and a middle die holder from top to bottom; the upper coil and the coil framework are fixed on the lower surface of the upper die base through screws; the lower coil is fixedly arranged at the upper part of the amplifier device, and a partition plate is arranged between the upper coil and the lower coil; the longitudinal section of the amplifier device is T-shaped, and a guide pillar device and a return spring are arranged between the lower part of the shoulder of the amplifier device and the upper surface of the middle die holder, so that the amplifier device can move up and down relative to the middle die holder through the guide pillar device and the return spring; the upper coil and the lower coil are respectively connected into a circuit with a capacitor, a resistor and a discharge switch; when the discharge switch is closed, two discharge currents in opposite directions are generated at the upper coil and the lower coil at the same time, and then magnetic field repulsion is generated, so that the amplifier device is pushed to be pressed downwards, and the electromagnetic force is transmitted to the metal sheet micro-blanking forming device.
The metal sheet micro-blanking forming device comprises a middle die base plate, a sealing ring, a containing frame, a lower die plate and a push rod from top to bottom; the flexible medium, the metal sheet and the female die are respectively arranged in the cavity in the middle of the containing frame from top to bottom; the upper surface of the middle die base plate is tightly attached to the lower surface of the middle die base, and the lower end surface of the amplifier device penetrates through the middle die base plate and the sealing ring and is pressed on the flexible medium.
The upper die base, the middle die base and the lower die plate are connected through locking screws.
When the amplifier device moves downwards to extrude the elastic medium, the containing frame limits the blanking force to diffuse towards the periphery, so that the blanking force acts on the surface of the metal sheet efficiently, and the metal sheet is blanked by matching the metal sheet with the female die.
Furthermore, the upper coil and the lower coil are of flat spiral structures and made of red copper.
Compared with the prior art, the invention has the advantages that:
1. the self-excitation type electromagnetic blanking has higher efficiency, and when the self-excitation type electromagnetic blanking is used for blanking the same metal sheet as the common induction type electromagnetic blanking, the self-excitation type electromagnetic blanking can save about 54 percent of energy.
2. The currents of the two discharging loops can be actively controlled by adjusting the discharging parameters, so that the blanking force can be better controlled.
3. The amplifier structure can make the transmission of electromagnetic force act on the surface of the metal sheet more uniformly, and improve the quality of the workpiece.
Drawings
FIG. 1 is a schematic diagram of a method of the present invention;
FIG. 2 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 3 is a disassembled view of the apparatus of the present invention.
In the figure, 1, a push rod, 2, a lower template, 3, a containing frame, 4, a female die, 5, a metal sheet, 6, a flexible medium, 7, a sealing ring, 8, a middle die backing plate, 9, a middle die base, 10, a locking screw, 11, a guide pillar device, 12, an amplifier device, 13, a partition plate, 14, an upper coil, 15, a coil framework, 16, an upper die base, 17, a capacitor, 18, a resistor, 19, a discharge switch, 20, a lower coil, 21 and a return spring.
Detailed Description
The invention is further described in the following with reference to the drawings and the specific examples of the description, but without thereby limiting the scope of protection of the invention.
As shown in fig. 1, an electromagnetic micro-blanking method based on a self-excitation principle includes: the self-excitation electromagnetic device is used as a power supply device and combined with a micro-blanking device, the power supply device is provided with two coils, namely an upper coil (14) and a lower coil (20), each coil is provided with a respective discharge loop, based on the self-excitation principle, when the two coils are closed by a discharge switch (19), the two coils simultaneously generate two discharge currents in opposite directions, the discharge currents in different directions interact to generate magnetic field repulsion, the lower coil (20) is fixed on an amplifier device (12) of the micro-blanking device, the magnetic field repulsion generated by the two coils is downwards extruded by the amplifier device (12), and the micro-blanking device utilizes the electromagnetic force transmitted to a micro-blanking forming area of the metal sheet to realize the micro-blanking of the metal sheet (5).
The upper coil (14) and the lower coil (20) are respectively connected into a circuit with a capacitor (17), a resistor (18) and a discharge switch (19), respective discharge parameters can be respectively adjusted, and magnetic field repulsion is jointly formed through adjustment control of the two coils.
The amplifier device (12) transmits magnetic field repulsive force by extruding the flexible medium (6) and completes blanking and forming of the metal sheet under the combined action of the amplifier device and the female die (4).
As shown in fig. 2 and 3, the electromagnetic micro-blanking device based on the self-excitation principle comprises a self-excitation electromagnetic power device and a metal sheet micro-blanking forming device.
The self-excitation electromagnetic power device comprises an upper die holder (16), a coil framework (15), an upper coil (14) positioned in the coil framework (15), a partition plate (13), a lower coil (20), an amplifier device (12) and a middle die holder (9) from top to bottom; the upper coil (14) and the coil framework (15) are fixed on the lower surface of the upper die holder (16) through screws; the lower coil (20) is fixedly arranged at the upper part of the amplifier device (12), and a partition plate (13) is arranged between the upper coil (14) and the lower coil (20); the longitudinal section of the amplifier device (12) is T-shaped, 4 guide post devices (11) and 4 return springs (21) are arranged between the lower part of the shoulder of the amplifier device (12) and the upper surface of the middle die holder (9), so that the amplifier device (12) can move up and down relative to the middle die holder (9) through the guide post devices (11) and the return springs (21). The upper coil (14) and the lower coil (20) are of flat spiral structures and made of red copper and are respectively connected into a circuit with a capacitor (17), a resistor (18) and a discharge switch (19); when the discharge switch (19) is closed, two discharge currents in opposite directions are generated at the upper coil (14) and the lower coil (20) simultaneously, and then magnetic field repulsion is generated, so that the amplifier device (12) is pushed to be pressed downwards, and electromagnetic force is transmitted to the metal sheet micro-blanking forming device.
The metal sheet micro-blanking forming device comprises a middle die base plate (8), a sealing ring (7), a containing frame (3), a lower die plate (2) and a push rod (1) from top to bottom; the flexible medium (6), the metal sheet (5) and the concave die (4) are respectively arranged in the cavity in the middle of the containing frame (3) from top to bottom; the upper surface of the middle die base plate (8) is tightly attached to the lower surface of the middle die base (9), and the lower end surface of the amplifier device (12) penetrates through the middle die base plate (8) and the sealing ring (7) and is pressed on the flexible medium (6).
The upper die holder (16), the middle die holder (9) and the lower die plate (2) are connected through 4 locking screws (10).
After the amplifier device (12) moves downwards to extrude the elastic medium (6), the blanking force is prevented from being diffused towards the periphery by the containing frame (3), so that the blanking force is efficiently acted on the surface of the metal sheet (5), and the blanking force and the concave die (4) are matched with each other to complete the blanking of the metal sheet (5).
The above embodiments are merely preferred embodiments of the present invention, which are intended to be illustrative and not limiting, and any changes, substitutions, combinations, simplifications, modifications, etc. made by those skilled in the art without departing from the spirit and principle of the present invention shall be included in the scope of the present invention.
Claims (5)
1. An electromagnetic micro-blanking method based on a self-excitation principle is characterized by comprising the following steps:
the self-excitation electromagnetic device is used as a power supply device to be combined with a micro-blanking device, the power supply device is provided with two coils, each coil is provided with a respective discharge loop, based on the self-excitation principle, when the two coils are closed at a discharge switch, the two coils simultaneously generate two discharge currents in opposite directions, the discharge currents in different directions interact to generate magnetic field repulsion force, one coil is fixed on an amplifier device of the micro-blanking device, the magnetic field repulsion force generated by the two coils is downwards extruded through the amplifier device, and the micro-blanking device realizes the micro-blanking of the metal sheet by utilizing the electromagnetic force transmitted to a micro-blanking forming area of the metal sheet.
2. The electromagnetic micro-blanking method based on the self-excited principle as claimed in claim 1, wherein: the discharge parameters of the two coils can be adjusted respectively, and the magnetic field repulsion is formed by adjusting and controlling the two coils together.
3. The electromagnetic micro-blanking method based on the self-excited principle as claimed in claim 1, wherein: the amplifier device transmits magnetic field repulsive force by extruding the flexible medium, and completes blanking and forming of the metal sheet under the combined action of the amplifier device and the female die.
4. The utility model provides an electromagnetism is punching device a little based on self-excitation formula principle which characterized in that: comprises a self-excitation electromagnetic power device and a metal sheet micro-blanking forming device;
the self-excitation electromagnetic power device comprises an upper die holder, a coil framework, an upper coil, a partition plate, a lower coil, an amplifier device and a middle die holder from top to bottom; the upper coil and the coil framework are fixed on the lower surface of the upper die base through screws; the lower coil is fixedly arranged at the upper part of the amplifier device, and a partition plate is arranged between the upper coil and the lower coil; the longitudinal section of the amplifier device is T-shaped, and a guide pillar device and a return spring are arranged between the lower part of the shoulder of the amplifier device and the upper surface of the middle die holder, so that the amplifier device can move up and down relative to the middle die holder through the guide pillar device and the return spring; the upper coil and the lower coil are respectively connected into a circuit with a capacitor, a resistor and a discharge switch;
the metal sheet micro-blanking forming device comprises a middle die base plate, a sealing ring, a containing frame, a lower die plate and a push rod from top to bottom; the flexible medium, the metal sheet and the female die are respectively arranged in the cavity in the middle of the containing frame from top to bottom; the upper surface of the middle die base plate is tightly attached to the lower surface of the middle die base, and the lower end surface of the amplifier device penetrates through the middle die base plate and the sealing ring and is pressed on the flexible medium;
the upper die base, the middle die base and the lower die plate are connected through locking screws.
5. The electromagnetic micro-blanking device based on the self-excited principle according to claim 4, wherein: the upper coil and the lower coil are of flat plate spiral structures and made of red copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011098716.1A CN112246952A (en) | 2020-10-14 | 2020-10-14 | Electromagnetic micro-blanking method and device based on self-excitation principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011098716.1A CN112246952A (en) | 2020-10-14 | 2020-10-14 | Electromagnetic micro-blanking method and device based on self-excitation principle |
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| Publication Number | Publication Date |
|---|---|
| CN112246952A true CN112246952A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011098716.1A Pending CN112246952A (en) | 2020-10-14 | 2020-10-14 | Electromagnetic micro-blanking method and device based on self-excitation principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846482A (en) * | 2021-01-27 | 2021-05-28 | 东莞市达盛机电设计有限公司 | Diffusion welding fixture for coil framework |
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|---|---|---|---|---|
| CN203370901U (en) * | 2013-08-06 | 2014-01-01 | 福州大学 | Sheet-metal micro-blanking device |
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2020
- 2020-10-14 CN CN202011098716.1A patent/CN112246952A/en active Pending
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| CN103861938A (en) * | 2012-12-18 | 2014-06-18 | 财团法人金属工业研究发展中心 | High-strength metal workpiece punching method and device |
| CN203370901U (en) * | 2013-08-06 | 2014-01-01 | 福州大学 | Sheet-metal micro-blanking device |
| CN103639286A (en) * | 2013-11-29 | 2014-03-19 | 华中科技大学 | Electromagnetic pulse drawing forming integration experimental platform for flat pieces |
| CN103817197A (en) * | 2014-03-11 | 2014-05-28 | 华中科技大学 | Electromagnetic molding device and method |
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| CN110773623A (en) * | 2019-12-17 | 2020-02-11 | 哈工大机器人（岳阳）军民融合研究院 | Electromagnetic punching forming device |
Non-Patent Citations (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112846482A (en) * | 2021-01-27 | 2021-05-28 | 东莞市达盛机电设计有限公司 | Diffusion welding fixture for coil framework |
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Application publication date: 20210122 |
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