基于模具补偿法的机械式胀形桥壳回弹控制-精密成形工程.PDF

第6卷摇 第4期 摇 摇 摇 摇 摇 摇 精 密 成 形 工 程 摇 摇 2014年07月 JOURNAL OF NETSHAPE FORMING ENGINEERING 摇摇摇 31 基于模具补偿法的机械式胀形桥壳回弹控制 王久林,李萍,李纪龙,薛克敏 (合肥工业大学 材料科学与工程学院,合肥230009) 摘要: 目的摇 解决由回弹引起的机械式胀形桥壳形状尺寸不精确的问题。 方法摇 采用Marc软件 平台和物理实验相结合的方法展开研究,运用补偿法对模具进行修正,补偿回弹量。 结果摇 机械 式胀形过程中,桥壳回弹量较大,单侧回弹量达到6.06 mm,严重影响其形状尺寸精度。 结论摇 通 过对模具进行适当修正,桥壳回弹量得到了很好补偿,成形效果较好,得到了符合要求的桥壳零 件,进一步完善了该工艺的理论基础。 关键词:机械式胀形;回弹;数值模拟;模具补偿 DOI:10.3969/ j.issn.1674-6457.2014.04.006 中图分类号:TG305摇 摇 摇 文献标识码:A摇 摇 摇 文章编号:1674-6457(2014)04-0031-05 Springback Control of Mechanical Bulging Axle Housing Based on Mold Compensation Method WANGJiu-lin,LI Ping,LI Ji-long,XUE Ke-min (School of Materials Science and Engineering,Hefei University of Technology,Hefei230009,China) ABSTRACT:Objective To solve the inaccuracies in shapes and sizes of mechanical bulging axle caused by springback. Methods Theresearchwasconductedbythecombinedmethodof Marcsoftwareplatformandphysicalexperiments,usinga compensation method to repair themouldto compensatethe springback. ResultsThe axlehousinghad alarge springback, and the unilateral value reached6.06 mmwhichwouldseriously affecttheaccuracy inthe shapeandsizeof theaxlehous鄄 ing. Conclusion The numerical simulation and experimental results showed that the forming effect was much better,and the springbackwas better compensated,which met the requirements of the axle housing parts. Meanwhile,the theoretical foundation of this processwasfurther improved. KEY WORDS:mechanical bulging;springback;numerical simulation;mould compensation 摇 摇 回弹是零件在弯曲卸载过程产生的反向弹性变 探究回弹规律,运用