冲裁速度对冲压件断面质量的影响  

Study of influence of blanking velocity on section quality of stamping work-piece

作　　者：赵中华[1,2] 张猛[1] 韦习成[2] 

机构地区：[1]上海工程技术大学材料工程学院,上海201620 [2]上海大学材料学院,上海201620

出　　处：《塑性工程学报》2010年第4期45-49,共5页Journal of Plasticity Engineering

基　　金：上海市教育委员会科研创新基金资助项目(09YZ368)

摘　　要：研究压力机实际冲压速度对冲裁件断面质量的影响规律,建立物理试验模型和有限元模拟分析模型,确定了Cockcroft-Latham断裂准则和合适的断裂因子,并根据伺服压力机的特性设计了不同的冲压速度。结果表明,对于H1F60CS压力机,速度设置在20%左右时,断面质量最好,与实际生产在低速切断时可以提升切断面的品质的经验一致。但当速度再减小时,出现光亮带高度下降,同时毛刺高度增加,说明冲裁速度一味减小,对能提高断面质量并非可行。Suitably physical and FEM models were set up and the CockcroftLatham rule and suitable fracture factor were selected.Based on the H1F60CS servo press machine adopted,several different stamping velocities were designed.The results of FEM simulation and physical experiments show that the best section quality could be gained when stamping velocity is set to 20% of general speed,which is consistent to real experience that lower velocity is good to improving section quality.But when stamping velocity is further slow down,the height of burr increases and the height of burnish zone decreases,which means the section quality depresses contrarily.

关 键 词：普通冲裁 实际冲压速度 断面质量 断裂准则 断裂因子 

分 类 号：TG386.305[金属学及工艺—金属压力加工]