A controllable drawing punch with magnetization function

Abstract

The invention discloses a controllable drawing punch with magnetization function, which relates to the technical field of sheet metal drawing, comprising: a punch body, a cavity is formed inside, and a magnetic isolation center column is arranged in the center of the cavity; a magnetic assembly, It includes a power supply, a current regulator, a soft magnet, a hard magnet, a magnetizer, a coil, and a magnet spacer. A plurality of soft magnets and a plurality of magnet spacers are nested on the magnetic isolation center column along the radial interval of the magnetic isolation center column. A hard magnet and a plurality of magnetic conductors are nested on the magnetic isolation center column along the radial interval of the magnetic isolation center column, and a soft magnet and a magnetizer are arranged opposite to each other up and down, and a magnet isolation body and a hard magnet are arranged vertically opposite each other. The side of the spacer magnet close to the soft magnet is provided with ring grooves, the ring grooves correspond to the coils one by one, one coil is installed in one ring groove, and the outermost coil is electrically connected with the current regulator. The controllable deep-drawing punch with magnetization function does not have the problem of overheating, the size of the magnetic field is adjustable, and the plate can be demagnetized.

Description

technical field [0001] The invention relates to the technical field of plate deep drawing, in particular to a controllable deep drawing punch with magnetization function. Background technique [0002] Sheet metal deep drawing is a plastic processing method that uses the plasticity of metal materials, uses a deep drawing die, and makes the processed sheet into parts through the deep drawing force. Compared with machining methods, deep drawing has higher efficiency and higher material utilization, so it has been widely used in various military, aerospace, civil and medical fields. [0003] Wrinkling and cracking are the most common failure modes in deep drawing, and they are related to condition parameters such as mold, sheet size, lubrication, speed, temperature, etc., including applied blank holder force, etc. In order to prevent deep-drawing defects, many methods have been adopted, such as the application method of blank-holding force, the timing of application, and the co...

AI Technical Summary

Problems solved by technology

However, the electromagnet needs to be energized to generate a magnetic field. Therefore, it needs to be continuously energized during the forming process, and the energy consumption is relatively high.

Moreover, the electromagnet heats up very seriously. When it is continuously drawn and formed, it will cause serious overheating problems.

However, if a permanent magnet is used as the source magnetic field to magnetize the sheet, the magnetic field cannot be adjusted at different forming stages, and it cannot be demagnetized.

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