摘要
运用AutoForm有限元软件对某密码锁壳体的成形过程进行模拟仿真,分析了凹模圆角、压边力、拉深系数等因素对零件开裂、减薄率及应力应变的影响,根据零件成形性模拟优化设计了成形参数,确定了零件主体采用一次拉深加一次整形的成形工艺方案。根据零件工艺要求,设计了三段式的模具结构,第一段完成冲导正孔和刺破;第二段完成拉深;第三段完成整形、冲孔和落料。实际生产证明分段式布局可简化多工位拉深冲孔模的结构,减少各工序间的成形干涉,提高零件成形后的尺寸精度。
The forming process of a code lock shell was simulated by using AutoForm finite ele⁃ment software.The influences of die fillet,blank holding force,and tensile coefficient on the crack⁃ing,thinning rate,and stress and strain of the part were analyzed.The forming parameters were op⁃timized according to the formability simulation diagram of the part,and the forming process plan that once drawing and once sizing was determined.According to the process requirements of the parts,the three-stage layout of the die structure was designed,the first stage to complete punching and puncturing,the second to complete the drawing,the third to complete shaping,punching and blanking.The production proved that the sectional layout could simplify the structure of the multistation drawing punching die,reduce the forming interference between the processes,and improve the dimensional accuracy of the parts after forming.
作者
余健
严婷婷
YU Jian;YAN Tingting(Department of Electromechanical and Traffic Branch,Jiaxing Nanyang Polytechnic Institute,Jiaxing 314031,China;Jiaxing Die&Mould Industry Association,Jiaxing 314001,China)
出处
《模具工业》
2023年第12期21-27,共7页
Die & Mould Industry
