Electromagnetically-driven soft male die liquid-filling deep-drawing forming device and technological method

Abstract

The invention discloses an electromagnetically-driven soft male die liquid-filling deep-drawing forming device and a technological method. The device comprises a coil, wherein the coil is arranged inparallel to the ground; a hydraulic chamber is vertically arranged at a position which is a certain distance away from the lower part of the coil; magnetic fluid which is tightly attached to a plate is arranged in the hydraulic chamber; a blank holder is welded below the hydraulic chamber; a female die is arranged below the blank holder; and the plate is pressed between the blank holder and the female die. The electromagnetically-driven soft male die liquid-filling deep-drawing forming device and the technological method combine the advantages of hydraulic forming and electromagnetic forming of the plate, avoid the respective defects of the hydraulic forming and the electromagnetic forming, are high in forming efficiency, reduce resilience, improve forming precision, are free of mechanicalcontact in a forming process, and improve surface quality.

Description

technical field [0001] The invention relates to the technical field of mechanical processing and devices, in particular to an electromagnetically driven soft punch liquid-filled deep drawing device and a process method. Background technique [0002] Deep drawing is an important sheet forming process, which occupies a very important position in the production process of automobiles, aircrafts, electrical appliances, instruments, electronics and other industrial sectors. For traditional sheet metal, the traditional cold deep drawing process is often used. However, with the development of industries such as automobiles, aircraft, and aerospace, high-strength and light-weight requirements have been put forward for materials, so high-strength steel, aluminum alloy, magnesium alloy and other plates have been widely used. However, the above-mentioned materials have poor plasticity at room temperature, and are difficult to form by cold drawing. The drawing ratio is relatively small...

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Problems solved by technology

[0005] Sheet hydroforming and sheet electromagnetic forming have their own advantages and disadvantages. Hydroforming has the advantages of simple mold structure, low mold cost, good quality and performance of formed parts, good surface quality, high shape and dimensional accuracy of formed parts and small springback, which can reduce the production of complex parts. Passes and other advantages; but its forming efficiency is not high, suitable for multi-variety and low-volume production

Electromagnetic forming technology can significantly improve the forming limit of materials, with small residual stress, small springback, extremely fast forming speed, easy to realize energy control and production automation, but not all metal materials can be directly processed by this technology, low electrical conductivity The material with high conductivity needs to be used as the "drive body", and the collision between the drive body and the formed sheet will reduce the surface quality and precision of the formed part

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