PUNCH DESIGN INFLUENCE ON STAMPABILITY
PUNCH DESIGN INFLUENCE ON STAMPABILITY
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冲头设计对冲压性能的影响
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Marcondes
中科院分区：
文献类型：
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作者：
Ravilson Antonio Chemin Filho;P. Marcondes
在冲压工具的试验过程中，经常需要进行修改。这些变化的范围可以从调整模具和冲床设计到选择具有更好成形特性的新材料。在成形过程中，识别工件中拉伸、拉深和/或平面应变将发生的区域，可以使加工过程通过工具的几何优化顺利进行。目前，人们越来越关注基于刀具几何形状的材料评价。除了传统的Nakazima测试工具外，本文还分析了不同几何形状的四种冲孔模型对成形极限曲线的影响。研究发现，刀具半径（R1和R2半径）的显著减小通过减小主真应变来降低材料的成形潜力。
Alterations are often necessary during the tryout of stamping tools. These changes may range from adjustments on die and punch design to the selection of a new material with better formability characteristics. The identification of regions in the workpiece where stretching, deep drawing and/or plane strain will occur during the forming process can allow the process to work smoothly through the tools’ geometry optimization. Nowadays, increasing attention has focused on a material evaluation based on tool geometries. In this work, the effect on the Forming Limit Curve of four punch models with varying geometries was analyzed in addition to the traditional Nakazima test tool. It was found that a marked reduction in the tool’s radiuses (R1 and R2 radii) reduces the material forming potential by decreasing the major true strain.