Research on Precision Deep Drawing Technology of Electro-Permanent Magnet

Abstract Deep drawing technology is widely used in industrial production. With the continuous improvement of industrial technology and the increasing demands of people's lives, more and more process products have put forward higher requirements for deep drawing forming accuracy. In order to improve the accuracy of deep drawing, it is essential to study the springback of deep drawing. Electro-permanent magnet technology can provide a green and environmentally friendly way to apply blankholder force in deep drawing processes. During one deep drawing process, it only needs to apply two pulse currents during magnetization and demagnetization. This article studies how to achieve the goal of predicting the springback of deep drawing using electro-permanent magnet technology to provide blank holder force through finite element analysis and data processing. The feed rate of the punch during the deep drawing process can be calculated based on the required product drawing height, and the forming accuracy can be controlled within the error range of 0.1mm. Therefore, it is feasible to achieve low-cost, high-precision forming of deep-drawn components with flanges.