850吨冷剪机剪切参数的优化分析
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摘要
剪刃是冷剪机的核心部件,冷剪机剪切钢筋过程中上下剪刃所受应力应变及剪切力直接影响剪刃寿命。对某钢厂棒材生产线中850吨冷剪机创建剪切模型,利用ANSYS/LS-DYNA进行有限元分析,深入探究剪切间隙、剪刃倾角、剪刃刀面宽度及剪刃重叠量等剪切参数对上下剪刃所受最大应力应变及剪切力的影响,通过优化剪切参数,延长剪刃寿命。
Shear blade is core component of a cold shear machine. The stress-strain and the shearing force of upper and lower shear blades directly affect the life of the shear blades in the process of shearing reinforcing steel bars by using the cold shear machine. In the present work,a shearing model was established for an 850-ton cold shear machine installed in bar production line of a steel plant. Finite element analysis on shearing steel bars with the cold shear machine was carried out by using ANSYS/LS-DYNA software. Effects of shearing parameters such as the shearing clearance,the inclination angle of shear blade,the width of blade face and the overlap extent of shear blades on the maximum stress-strain and the shearing force of upper and lower blades were examined in depth. As a result,through optimizing those shearing parameters the life of the shear blades was ultimately prolonged.
Shear blade is core component of a cold shear machine. The stress-strain and the shearing force of upper and lower shear blades directly affect the life of the shear blades in the process of shearing reinforcing steel bars by using the cold shear machine. In the present work,a shearing model was established for an 850-ton cold shear machine installed in bar production line of a steel plant. Finite element analysis on shearing steel bars with the cold shear machine was carried out by using ANSYS/LS-DYNA software. Effects of shearing parameters such as the shearing clearance,the inclination angle of shear blade,the width of blade face and the overlap extent of shear blades on the maximum stress-strain and the shearing force of upper and lower blades were examined in depth. As a result,through optimizing those shearing parameters the life of the shear blades was ultimately prolonged.
引文
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[2]常军然.圆盘剪剪切系统动力学分析与仿真[D].江西:江西理工大学,2008.
[3]罗倩.平行剪切中设计参数对剪切性能的影响研究[D].大连:大连理工大学,2012.
[4]聂静良.上剪刃几何参数及剪切速度对剪切过程影响的研究[D].太原市:太原科技大学,2015.
[5]刘中,朱振华,卫青珍.基于LS-DYNA的钢筋切断机剪切钢筋的动态仿真[J].太原科技大学学报,2011,32(1):33-36.
[6]许体武,章小峰,黄贞益,等.圆盘剪剪切过程侧向间隙的数值模拟[J].热加工工艺,2013,42(19):132-134,138.
[7]徐贺伟,卢秀春,杨荣刚,等.基于ANSYS/LS-DYNA的钢筋剪切过程的数值模拟[J].重型机械,2016(6):21-24.
[8]景群平,贾海亮,双远华,等.切边圆盘剪剪切过程的数值模拟和实验研究[J].塑性工程学报,2010,17(5):32-36.
[9]李国和,王敏杰,段春争.基于ANSYS/LS-DYNA的金属切削过程有限元模拟[J].农业机械学报,2007,38(12):173-176.
[10]殷国军,刘剑,秦莉,等.铸造磨具钢镶块刃口在板材冲裁过程中的动态显示有限元分析[J].机械设计与制造,2008(2):193-195.
[11]陈小龙.钢筋剪切机送料装置与剪切技术的研究[D]江西:江西理工大学,2013.
[12]朱振华.钢筋切断机的箱体有限元分析及传动机构动力学仿真[D].太原:太原科技大学,2010.
[13]张红松,胡仁喜,康士廷,等.ANSYS/LS-DYNA非线性有限元分析实例指导教程[M].北京:机械工业出版社,2013:27-28.
[14]施昱,孟宾宾.钢格板剪床剪切过程有限元仿真研究[J].机床与液压,2015,43(2):33-37.
[15]孟凡,李郝林.基于ANSYS/LS-DYNA的碎边剪剪切力计算分析[J].机械工程与自动化,2015(2):45-47,50.