Transactions of Materials and Heat Treatment

Title：Reasonable value of optimized negative clearance in fine-blanking with negative clearance

Authors： LI Jian-hua ZHANG Zhong-mei(Mechanical and Electronic School Zhongyuan University of Technology Zhengzhou 450007 China)

Unit：

KeyWords： negative clearance simulation of FEM no burr

ClassificationCode：TG386.2

year,vol(issue):pagenumber：2009,34(1):149-153

Abstract：

The geometry model of the rigid-plastic Finite Element Model(FEM) was established based on the similarity theory.The blanking of AISI-1045 material with different negative clearance values was simulated and analyzed by finite element analysis software of metal plastic DEFORM-2D to obtain the relation curve of different negative clearance values with roll-over,sheared zone and punching load.According to the result of simulation,the blanking experiments of AISI-1045 material with 3.8 mm thickness and different negative clearances were made and the samples with well sheared cut without burrs were obtained by experiments.It summarizes that fine blanking without burrs can be achieved when the negative clearance value c is of-0.1——0.15 mm.

Funds：

河南省科技厅基础研究项目(0311051000)

Reference：

[1]李建华,范为福,杜虹.无飞边冲孔瞬时间隙及塑性状态研究[J].中国机械工程,2002,13(12):1065-1066.
[2]范为福,黎刚生,乔国谦.AISI-1045、1025钢的冲裁模拟[J].锻压技术,2007,32(4):120-124.
[3]李建华,乔国谦,黎刚生.铝板负间隙冲裁力与间隙的研究[J].锻压装备与制造技术,2006,41(6):64-66.
[4]孙希延,施浒立,纪元法,等.板料拉深成形数值模拟关键算法的比较[J].锻压技术,2006,31(2):19-22.
[5]秦泗吉,彭加耕.厚板对冲裁力影响规律的研究[J].金属成形工艺,2002,20(4):4-7.
[6]温彤,廖林灿,张湘伟.金属剪切过程的理论研究状况[J].锻压技术,2000,25(3):44-47.
[7]彭加耕,秦泗吉,李硕本.板材精密冲裁工艺的研究[J].燕山大学学报,2002,26(4):347-350.

Service：

【This site has not yet opened Download Service】【Add Favorite】