摘要
采用Solidworks和Deform-3D建立了滚筒式飞剪剪切过程的三维动态有限元模型,研究了飞剪的剪切过程和剪刃侧隙对断面质量的影响,以及剪切力随剪刃切入带钢厚度的变化规律,并分析了不同工况下的剪切力。仿真结果表明:飞剪在一个很小的剪切区域内迅速将带钢剪断,剪切力先增大后减小,带钢剪切厚度一半时剪切力达到最大值;剪切速度越快剪切力也越大,剪切温度每升高50℃则剪切力减小约20%,剪切力的大小与带钢厚度成正比;而剪刃侧隙对剪切力影响不大。
The Solidworks and Defoml-3D are used to establish three-dimensional dynamic finite element model of drum flying shear. The shear process of flying shear and the effect of shear blade clearance on the quality of the cross section is studied, as well as the variation of the cutting force under different cutting thickness. Cutting force is analyzed under different conditions. Simulation results show that： hot strip is quickly cut in a small shear zone and cutting force firstly increases and then decreases. Cutting force reaches the maximum point when the flying shear cuts half the whole thickness. The faster the cutting the greater the cutting force needed. Cutting force decreases by about 20% when cutting temperature increases by 50℃, and cutting force is proportional to the strip thickness while blade clearance has little effect on cutting force.
出处
《机械设计与制造》
北大核心
2014年第8期78-80,84,共4页
Machinery Design & Manufacture
