摘要
提出了一种新型电磁压边薄板拉深模具,压边力由电磁力替代了传统的液压力或机械压力。建立了电磁力与压边力的数学关系,提出了励磁电流的控制方法,为得到电磁压边系统中电磁力的分布情况,运用ANSYS/Multiphysics软件进行了数值模拟。根据电磁压边装置及传统压边装置的压边力特点,建立了3条变压边力曲线,运用ANSYS/LS-DYNA软件对筒形件拉深成形过程进行了数值模拟,证明电磁压边拉深模具可以较好地抑制拉深过程中的起皱与减薄。
A novel Electromagnetic Blank Holding Die（ EBHD） is proposed. The traditional Blank Holder Force（BHF） is replaced by electromagnetic force. Mathematical relationship between electromagnetic force and BHF has been established and the control method of magnetic current has been designed. ANSYS/Multiphysics is used to analyze the distribution of electromagnetic force. According to the features of electromagnetic blank holding device and traditional ones,three various BHF-Stroke curve is proposed.Besides,the numerical simulation of drawing process of cylindrical part has been performed by ANSYS/LS-DYNA. The simulation results show that the novel EBHD can effectively restrain wrinkling and thinning during sheet metal drawing.
作者
李昊
王强
何芳
郑娅云
LI Hao;WANG Qiang;HE Fang;ZHENG Yayun(School of Mechanical Engineering, University of Jinan, Jinan 250022, CHN;Sehool of Automation and Electrical Engineering, University of Jinan, Jinan 250022, CHN)
出处
《制造技术与机床》
北大核心
2018年第5期31-35,共5页
Manufacturing Technology & Machine Tool
关键词
拉深模具
压边力
电磁压边
数值模拟
drawing die
blank holding force
electromagnetic blank holding
numerical simulation
