基于DeForm-3D冷缩径过渡锥面冷整形工艺研究  

Cold Reshaping Process of Ironing Cone Based on DEFORM-3D

作　　者：刘百宣[1] 王瑞[2] 覃寿同[1] 刘华[3] 

机构地区：[1]郑州大学,郑州450001 [2]河南师范大学新联学院,郑州451464 [3]郑州机械研究所,郑州450001

出　　处：《精密成形工程》2015年第1期56-60,81,共6页Journal of Netshape Forming Engineering

基　　金：国家高技术研究发展计划(863)计划(2012AA040202)

摘　　要：目的主要研究轴类件冷缩径后过渡锥面整形时,整形圆角R、变形量ε以及约束条件对整形效果的影响,及整形成功的可行性。方法通过选择不同的圆角R值、变形量ε值和约束条件,利用De Form-3D有限元模拟软件,对整形过程进行模拟分析,探究了几个参数对整形效果的影响。结果模拟结果获得了整形圆角R、变形量ε以及约束条件对整形效果的影响规律,发现在开式挤压下,整形圆角R为影响整形效果的主要参数;在半开式挤压下,变形量ε为影响整形效果的主要参数。结论开式挤压整形时R值的影响比较显著,在小R值的情况下,开式挤压整形不可行,而在R值达到锥面上下段直径的差值0.5倍以上时,整形可行。半开式挤压整形,主要影响因素为缩径总变形量ε,在总变形量ε小于35%时,整形可行,当ε大于35%时半开式整形基本不可行。To investigate the influence of reshaping fillet R, the reduction ε and the constraint condition during cold re- shaping of ironing cone, and the possibilities of reshaping success. Through choosing different values of fillet R, reduction ε and different constraint conditions, the reshaping process was analyzed using the finite element software DeForm-3D, and the influence of several parameters on the reshaping effect was studied. The influence law of the fillet R, the reduction and the constraint condition on the reshaping effect was obtained by simulation. It was found that in open die extrusion, the main parameter influencing the reshaping effect was the fillet R, while in semi-open die extrusion, the main parameter in- fluencing the reshaping effect was the reduction ε. The influence of fillet R was significant in open die extrusion. Open die extrusion reshaping was infeasible when the value of fillet R was small, and was feasible when the value of fillet R was lar- ger than 0.5 times of the difference in cone diameters of the upper and lower sections. The main influence factor was the I-roning reduction e in semi-open die extrusion reshaping. The reshaping was feasible when the value of the ironing reduction e was smaller than 35%, and was basically infeasible when the value of the ironing reduction ε was larger than 35%.

关 键 词：冷缩径 锥面 整形工艺 有限元分析 

分 类 号：TG306[金属学及工艺—金属压力加工]