六角开槽螺母的冷镦工艺优化及数值模拟
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摘要
传统的冷挤压工艺通常是根据经验反复的试模修模加以确定的,生产周期长,成本高。对六角开槽螺母进行了工艺分析,提出了两种不同的多工位冷镦工艺方案,并基于有限元技术DEFORM-3D分别对两种方案进行数值模拟仿真计算。分析比较了两种方案应力应变、载荷分布的规律。结果表明,采用第2种冷镦工艺方案时,各工位变形程度分配更为合理,模拟得到的零件表面质量更佳,模具使用寿命更长。将有限元技术应用于六角开槽螺母的工艺优化,对同类紧固件的成型工艺及模具设计具有一定的参考价值。
The traditional process of cold extrusion is usually based on experiences,which requires repeatedly testing and repairing dies,and there is a long production cycle and high cost. The process analysis and two different cold heading plans for hexagonal slot nut were described.Numerical simulation for two different plans was proposed based on the finite element analysis software DEFORM-3 D. The law of stress and strain,load was analyzed and compared. The result show that the deformation degree distribution is more reasonable,parts surface quality is better and die service life is longer by using the second plan. Application of finite element technology in the technology optimization of hexagonal slot nut has a certain value to the same type of parts forming technology and die design.
The traditional process of cold extrusion is usually based on experiences,which requires repeatedly testing and repairing dies,and there is a long production cycle and high cost. The process analysis and two different cold heading plans for hexagonal slot nut were described.Numerical simulation for two different plans was proposed based on the finite element analysis software DEFORM-3 D. The law of stress and strain,load was analyzed and compared. The result show that the deformation degree distribution is more reasonable,parts surface quality is better and die service life is longer by using the second plan. Application of finite element technology in the technology optimization of hexagonal slot nut has a certain value to the same type of parts forming technology and die design.
引文
[1]Wang W,Zhao J,Zhai RX.A forming technology of spur gear by warm extrusion and the defects control[J].Mater Manuf Prosesses 2016(21):30-38.
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[9]孙健,张水忠.基于DEFORM-3D的离合块冷挤压工艺优化[J].锻压技术,2009,34(5):12-15.Sun Jian,Zhang Yong-zhong.Process optimization of clutch block cold extrusion based on DEFORM-3D[J].Forging&Stamping Technology,2009,34(5):12-15.)
[10]苗景涛,李名尧,梁孟强.基于Deform-3D的喷油器护套冷挤压工艺优化[J].上海工程技术大学学报,2015,29(3):250-252.(Miao Jing-tao,Li Ming-rao,Liang Meng-qiang.Process Optimization of fuel injector sheath cold extrusion based on Deform-3D[J].Journal of Shanghai University of Engineering Science,2015,29(3):250-252.)
[2]Hu CL,Wang KS,Liu QK.Study on a new technological scheme for cold forging of spur gears.J Mater Prosess Technol,2007:187-188:600-603.
[3]胡国军.现代冷挤压成形技术研究与应用[J].机械设计与制造,2011(2):96-98.(Hu Guo-jun.Research and application of modern cold extrusion technology[J].Machinery Design&Manufacture,2011(2):96-98.)
[4]冯纪良.Z310型三工位联合冷镦机的设计与开发[D].南京:南京理工大学,2007.(Feng Ji-liang.Design and development of 2310 forging machine[D].Nanjing:Nanjing University of Science and Technology,2007.)
[5]阮和根.全自动多工位冷镦机设计及管件部件的优化分析[D].上海:上海大学,2010.(Ruan He-gen.The design of automatic multi-station cold heading machine and optimization of the key components[D].Shanghai:Shanghai University,2010.)
[6]肖志玲,刘百宣,刘华.销钉多工位冷镦成形过程数值模拟及组织演变[J].热加工工艺,2014,43(17):119-124.(Xiao Zhi-ling,Liu Bai-xuan,Liu Hua.Numerical Simulation and microstructure evolution on Multi-station cold heading of Pin[J].Hot Working Technology,2014,)
[7]周勇,傅蔡安.基于DEFORM-3D的微型螺钉冷成形过程有限元分析[J].机械设计与制造,2008(3):109-111.(Zhou Yong,Fu Cai-an.Finite elements analysis of mini-type bolt heading process based on deform-3D[J].Machinery Design&Manufacture,2008(3):109-111.)
[8]张菁丽,陈学文,刘泽虎.气门弹簧座多工位锻造工艺优化及数值模拟[J].锻压技术,2012,37(1):35-37.(Zhang Jing-li,Chen Xue-wen,Liu Ze-hu.Numerical simulation and optimization for multi-station high speed forging of upper spring seat[J].Forging&Stamping Technology,2012,37(1):35-37.)
[9]孙健,张水忠.基于DEFORM-3D的离合块冷挤压工艺优化[J].锻压技术,2009,34(5):12-15.Sun Jian,Zhang Yong-zhong.Process optimization of clutch block cold extrusion based on DEFORM-3D[J].Forging&Stamping Technology,2009,34(5):12-15.)
[10]苗景涛,李名尧,梁孟强.基于Deform-3D的喷油器护套冷挤压工艺优化[J].上海工程技术大学学报,2015,29(3):250-252.(Miao Jing-tao,Li Ming-rao,Liang Meng-qiang.Process Optimization of fuel injector sheath cold extrusion based on Deform-3D[J].Journal of Shanghai University of Engineering Science,2015,29(3):250-252.)