Novel backward extrusion type sheet electromagnetic micro blanking method and test device
A reverse extrusion and micro-blanking technology, applied in the field of thin plate punching, can solve problems such as uneven force on the workpiece to be punched, affecting the forming quality of the punched part, and complicated device structure, so as to avoid energy loss and simple structure , Improve the effect of forming quality
Inactive Publication Date: 2021-04-30
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology
In the traditional electromagnetic micro-punching forming, the punching force acts on the flexible medium through the transmission of the amplifier structure, and the punching force presses the workpiece to be formed downward through the transmission of the flexible medium, and the workpiece to be formed is extruded by the flexible medium The bottom and the die work together to complete the micro-punching process. In the traditional electromagnetic micro-punching forming method, the structure of the device is relatively complicated; the punching force is transmitted in the amplifier structure with energy loss; In the transmission of flexible media, there will be uneven transmission, which will cause uneven force on the workpiece to be punched and affect the forming quality of the blanked part.
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[0016] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.
[0017] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
[0018] I...
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The invention discloses a novel backward extrusion type sheet electromagnetic micro blanking method and a test device. According to the method and the device, a guide column device, an electromagnetic blanking force providing module and a sheet metal backward extrusion micro-blanking forming module connected to the electromagnetic blanking force providing module are included. According to the method and the device, the structure is simple, blanking force is transmitted without an amplifier device, and the blanking force transmission efficiency can be improved; and in addition, energy loss caused when the blanking force is transmitted by means of a flexible medium is avoided, a female die in the electromagnetic blanking force providing module directly acts on a workpiece, the surface of the workpiece is evenly stressed, and the forming quality of a blanking piece can be improved.
Description
technical field [0001] The invention relates to the field of thin plate blanking, in particular to a novel back-extrusion type thin plate electromagnetic micro-punching method and an experimental device. Background technique [0002] Microporous thin plate parts are widely used in various fuel injection (steam) nozzles, microelectronic integrated circuits, aerospace electronics, lead frames, etc., and require very high dimensional accuracy. In the traditional electromagnetic micro-punching forming, the punching force acts on the flexible medium through the transmission of the amplifier structure, and the punching force presses the workpiece to be formed downward through the transmission of the flexible medium, and the workpiece to be formed is extruded by the flexible medium The bottom and the die work together to complete the micro-punching process. In the traditional electromagnetic micro-punching forming method, the structure of the device is relatively complicated; the p...
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IPC IPC(8): B21D28/02B21D28/14B30B1/42
CPCB21D28/02B21D28/14B21D28/002B30B1/42
Inventor 刘大海李智仇雯晴郭正华
Owner NANCHANG HANGKONG UNIVERSITY