走刀轨迹对双面渐进成形几何精度的影响  

Influence of Different Tool Paths on Geometric Accuracy during DSIF

作　　者：吴金晗[1] 王秋成[1] 胡海瀚[1] 曹江[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《新技术新工艺》2014年第8期117-120,共4页New Technology & New Process

基　　金：浙江省自然科学基金资助项目(LZ12E05003

摘　　要：在单点渐进成形(single point incremental forming,简称SPIF)加工过程中,成形刀具与夹具间的板料因得不到有效支承而发生翘曲,卸载后板料易回弹,影响制件的成形几何精度;因此,提出了2种新型双面渐进成形(double sided incremental forming,简称DSIF)走刀轨迹,分析了2种轨迹下板料单元的应力和应变状态,并借助有限元分析软件模拟了板料的成形过程,进一步比较了不同走刀轨迹下制件的成形几何精度。仿真数据表明,与单点渐进成形相比,这2种双面渐进成形走刀轨迹能有效改善制件的成形几何精度。Sheet between forming tool and fixture is easy to bend due to the lack of effective support and spring back would occur after the removal of forming tool in single point incremental forming （SPIF）. Two new tool paths of double-si- ded incremental forming （DSIF） were proposed in the paper. Simulation of the forming process was done by finite element a- nalysis software and the formed component geometric accuracies were compared in different tool paths. The simulation re- sults showed that DSIF tool path can obtain better geometric accuracy than that of SPIF.

关 键 词：双面渐进成形 走刀轨迹 几何精度 数值模拟 

分 类 号：TG386[金属学及工艺—金属压力加工]