热模锻压力机整机刚度估计与结构优化
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摘要
提出一种大型热模锻压力机在锻造工作状态下的整机刚度计算方法。建立压力机整机核心传载构件的有限元模型;采用刚性连接实现不同组件的连接;计算锻造载荷在整机的载荷传递情况,获得了整机应力和变形分布。以25MN热模锻压力机的工作台和滑块表面的相对位移精度指标为目标,根据各个组件的应力和变形分布,优化了整机薄弱件结构的形状尺寸。研究验证了所提方法的可行性,为大型锻造装备结构刚度预先估计提供了方法基础。
Method for the evaluation of whole rigidity of large hot die forging press under forging load is proposed. Finite element models for the main components in aforging press that transfer the stamping loads are firstly established. Different components are rigidly linked. Forging load transfer in the whole press is evaluated which yields the stress and deformation distributions. In case studies, relative positional accuracy between the surfaces of slider and worktable of 25 MN hot die forging pressis selected as target, shape and dimension of weak parts in the whole press are improved according to the distributions of stress and deformation. This researchvalidates the feasibility of proposed method and provides a fundamental prediction beforehand for the rigidity of large forging equipment.
Method for the evaluation of whole rigidity of large hot die forging press under forging load is proposed. Finite element models for the main components in aforging press that transfer the stamping loads are firstly established. Different components are rigidly linked. Forging load transfer in the whole press is evaluated which yields the stress and deformation distributions. In case studies, relative positional accuracy between the surfaces of slider and worktable of 25 MN hot die forging pressis selected as target, shape and dimension of weak parts in the whole press are improved according to the distributions of stress and deformation. This researchvalidates the feasibility of proposed method and provides a fundamental prediction beforehand for the rigidity of large forging equipment.
引文
[1]李忠民,卢喜,刘雨耕,等.热模锻压力机[M].北京:机械工业出版社,1990.
[2]中国机械工程学会塑性工程学会.锻压手册[M].北京:机械工业出版社,2007.
[3]陆爱国,朱新武,孙成建.10000 kN热模锻压力机有限元分析[J].锻压装备与制造技术,2012,47(6):28-31.
[4]王尚斌,孙宇,张庆飞.5000 kN机械压力机机身有限元分析[J].锻压技术,2009,34(2):83-87.
[5]张涛,于兆卿,阎洪涛.热模锻压力机组合机身的受力及刚度分析[J].锻压技术,2014,39(11):62-65.
[6]侯佳欣,李江国,蒋鹏,等.12500kN冷锻压力机机身结构的有限元分析[J].锻压技术,2018,43(5):89-95.
[7]葛敏,李海涛,李江国.CWFP12500 kN冷锻压力机有限元模态分析[J].锻压技术,2015,40(10):88-91.
[8]杨东祺,车卫红,徐超.冷锻压力机机身振动特性的模态研究[J].锻压技术,2014,39(5):92-95.
[9]李妙静,毕大森,李森,等. 20 MN高速复合传动压力机机身有限元分析[J].重型机械,2017,(2):72-76.
[10]宋彤,韦韡.蒋鹏,等. 140MN大型热模锻压力机模架结构方案的有限元分析[J].锻压技术,37(3):153-158.
[2]中国机械工程学会塑性工程学会.锻压手册[M].北京:机械工业出版社,2007.
[3]陆爱国,朱新武,孙成建.10000 kN热模锻压力机有限元分析[J].锻压装备与制造技术,2012,47(6):28-31.
[4]王尚斌,孙宇,张庆飞.5000 kN机械压力机机身有限元分析[J].锻压技术,2009,34(2):83-87.
[5]张涛,于兆卿,阎洪涛.热模锻压力机组合机身的受力及刚度分析[J].锻压技术,2014,39(11):62-65.
[6]侯佳欣,李江国,蒋鹏,等.12500kN冷锻压力机机身结构的有限元分析[J].锻压技术,2018,43(5):89-95.
[7]葛敏,李海涛,李江国.CWFP12500 kN冷锻压力机有限元模态分析[J].锻压技术,2015,40(10):88-91.
[8]杨东祺,车卫红,徐超.冷锻压力机机身振动特性的模态研究[J].锻压技术,2014,39(5):92-95.
[9]李妙静,毕大森,李森,等. 20 MN高速复合传动压力机机身有限元分析[J].重型机械,2017,(2):72-76.
[10]宋彤,韦韡.蒋鹏,等. 140MN大型热模锻压力机模架结构方案的有限元分析[J].锻压技术,37(3):153-158.