摘要
分析了薄板拉延过程中应用固定压边间隙控制方式的成形特点,指出选择合理的压边间隙量是保证冲压件成形质量的关键。应用有限元数值仿真技术,以 NUMISHEET’99圆柱杯深拉延──反向深拉延标准考题(Benchmark-C)为例.模拟了其成形过程.在仿真结果与 Kim Hyung jong的实验结果较好地吻合的基础上,通过对大量仿真计算结果的分析.提出了薄板多工序拉延成形中采用压边间隙控制方式时合理选择间隙量的方法。
Forming characteristic under fixed blankholder gap in sheet metal forming has been analyzed in this paper. Selection of reasonable blankholder gap is the key point of guaran- teeing forming quality of workpiece. Benchmark-C of Numisheet'99,reveres deep drawing of a cylindrical cup was simulated by applying various blankholder gaps. On the basis of good a- greement with experimental data provided by Numisheet'99 committee. the influence of blankholder gap on sheet metal drawing and the method of determining reasonable blankholder gap for cup multiple drawing are proposed.
出处
《金属成形工艺》
2000年第5期6-10,共5页
Metal Forming Technology
