Groove design of front axle roll forging die based on near-equal load distribution of each pass [基于各道次载荷近平均分配下的前轴辊锻模具型槽设计]

作者：Luo H.; Luo Q.; Wang Y.-B.; Zou X.-Y.; Tian X.-Z.; Wei K.^*

来源：Journal of Plasticity Engineering, 2021, 28(1): 22-28.

DOI：10.3969/j.issn.1007-2012.2021.01.004

• Forming load
• Groove design
• Multi-pass roll forging
• Near-equal distribution

A forward stepwise modification method of roll forging die based on near-equal load distribution of each pass was proposed. Firstly, the 3D 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 kN to 156 kN 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.

• 单位
  南昌航空大学