摘要
本文在文献[1]的基础上深入分析了冲压板材的机械性能(厚向异性指数 R、硬化指数 n、屈强比σ_b/σ_s、综合参量 R×n×σ_b)、板料厚度 t 及相对板厚 t/D、工件相对直径 d/t、凸模及凹模圆角半径、压边力以及摩擦系数等因素对拉深性能的影响规律。给出了自动求算极限拉深系数的程度框图及用 Fortran 语言编写的计算程序。
Based on the literary[1],the factors to affect deep—drawing property of sheet metal are deeply analysed in the paper,such as the normal anisotropy index r, the strain hardening index n,tensile strength—to—yield strength ratio σ_b/σ_s,com- prehensive index r×n×σ_b,thickness t and relative thickness t/D of sheet metal,rel- /ative diameter d/t of a cup,radius of rounded edges of punch or die,holding—down force of flange as well as friction factor ect.The framed figure and program to com- pute limit deep—drawing ratio automaticaly are either given in the paper.
出处
《模具技术》
1996年第6期15-24,共10页
Die and Mould Technology
