工艺参数对薄壁锥形旋压件凸缘平直度的影响

发布时间：2018-05-29 14:31

本文选题：锥形薄壁旋压件 + 凸缘平直度　；参考：《机械科学与技术》2017年07期

【摘要】：基于Simufact.Forming软件,建立了平板坯料强力旋压的有限元模型,对带平直凸缘的锥形薄壁旋压件的成形过程进行了模拟,并以基于最小二乘法的平面度误差作为凸缘平直度的评价指标,采用单因素试验设计方法,获得了芯模转速、旋轮进给速率、旋轮圆角半径以及旋轮安装角对锥形薄壁旋压件凸缘平直度的影响规律。研究表明:凸缘平直度随着芯模转速的增大而提高,但当芯模转速增大到一定值以后,凸缘平直度不再随其变化;增大旋轮进给速率,凸缘平直度呈降低趋势;旋轮圆角半径和旋轮安装角对凸缘平直度的影响较为复杂,凸缘平直度随其增大而呈现先提高后降低的趋势。依据仿真结果选取较优的工艺参数进一步进行仿真,相比其它各组仿真模拟,得到的凸缘平面度误差值最小。
[Abstract]:Based on the Simufact.Forming software, the finite element model of the plate billet strength spinning is established, the forming process of the tapered thin-walled spinning parts with flat flange is simulated, and the flatness error based on the least square method is used as the evaluation index of flange flatness. The effects of the core mold speed, the feed rate of the rotary wheel, the radius of the rotary wheel and the mounting angle of the rotary wheel on the flange flatness of the tapered thin-walled spinning parts were obtained by using the single factor test design method. The results show that the flange flatness increases with the increase of the core mold speed, but when the core die speed increases to a certain value, the flange flatness does not change with it, and the flange flatness decreases with the increase of the feed rate of the rotary wheel. The influence of radius and mounting angle of rotary wheel on flange flatness is complex, and flange flatness increases first and then decreases with increasing flange flatness. According to the simulation results, the better process parameters are selected for further simulation. Compared with other simulation groups, the flange flatness error is the smallest.
【作者单位】：宁波大学机械工程与力学学院;浙江省零件轧制成形技术研究重点实验室;
【基金】：浙江省自然科学基金重点项目(LZ17E050001)资助
【分类号】：TG306

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