基于各道次载荷近平均分配下的前轴辊锻模具型槽设计  

Groove design of front axle roll forging die based on near-equal load distribution of each pass

作　　者：罗欢 罗琪 王奕博 邹雪勇 田先兆 魏科[1] LUO Huan;LUO Qi;WANG Yi-bo;ZOU Xue-yong;TIAN Xian-zhao;WEI Ke(School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063

出　　处：《塑性工程学报》2021年第1期22-28,共7页Journal of Plasticity Engineering

基　　金：江西省自然科学基金资助项目(20192BAB216023);南昌航空大学第十四届大学生“三小”重点项目(2019HZ004)。

摘　　要：提出了一种基于各道次载荷近平均分配下的辊锻模具正向分步修正方法。首先,基于辊锻模具参数化设计系统,设计初始辊锻模具三维造型;随后,利用有限元模拟获取各道次载荷分布数据,分析不同道次之间的平均载荷差距。对于平均载荷较小的辊锻模具,采用增大相应道次的变形量的方法提升其成形载荷,以此作为修正初始模具型槽尺寸的依据;最后,利用有限元模拟反复迭代更新模具型槽尺寸。将该方法运用于某汽车前轴的辊锻模具设计过程中,结果表明,仅采用二次修正后得到各道次平均载荷的最大差距由701 k N减小至156 k N,减幅达4倍多,说明所提出的辊锻模具正向分步修正方法是可靠且有效的。A forward stepwise modification method of roll forging die based on near-equal load distribution of each pass was proposed.Firstly,the 3 D modeling of the initial roll forging die was designed based on parametric design system of roll forging die.Subsequently,the load distribution data of each pass was obtained by finite element simulation,and the discrepancy of average load of each pass was analyzed.For the roll forging die with low average load,the corresponding roll forging load can be increased by increasing the deformation amount of the roll pass,and this was used as the basis for correcting the size of initial die groove.Finally,by adopting the finite element simulation,the size of the die groove was undated iteratively.The proposed method was applied to a roll forging die design for an automobile front axle.The results show that the maximum discrepancy of the average load of each pass is reduced from 701 k N to 156 k N after only using the second modification,and the reduction amplitude is more than four times,which indicates that the proposed forward stepwise modification method of roll forging die is reliable and effective.

关 键 词：多道次辊锻 成形载荷 近平均分配 型槽设计 

分 类 号：TG316[金属学及工艺—金属压力加工]