Comparison of some Final Part Geometrical Characteristics of Cylindrical Cups Manufactured by Deep-Drawing and Two-Point Incremental Sheet Forming
Comparison of some Final Part Geometrical Characteristics of Cylindrical Cups Manufactured by Deep-Drawing and Two-Point Incremental Sheet Forming
复制标题
拉深与两点渐进板料成形圆柱杯最终零件部分几何特性比较
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
G. Hirt
中科院分区：
文献类型：
--
作者：
Babak Taleb Araghi;M. Bambach;G. Hirt
非对称渐进板料成形(AISF)是一种新的板料成形工艺，它是通过简单的球头成形工具的数控运动来生产板料零件。尽管AISF的灵活性和在许多情况下的成功应用，但由于一些仍然存在的工艺限制，如严重减薄，这强烈依赖于零件表面的倾斜度，以及由于回弹导致的几何精度有限，AISF尚未在工业环境中建立。此外，人们对AISF生产的零件的性能知之甚少，特别是与拉深零件相比。本文的目的是比较拉深成形和AISF成形的圆筒形杯形件的应变和厚度分布。对于AISF，采用了不同的成形策略。壁厚和表面应变分布的比较表明，拉深成形的筒体和AISF成形的最佳筒体的壁厚和表面应变分布相似，但AISF成形的零件的表面应变和薄板减薄比拉深成形的要大。
Asymmetric incremental sheet forming (AISF) is a new sheet metal forming process in which sheet metal parts are produced by CNC-controlled movements of a simple ball-headed forming tool. Despite its flexibility and successful application in many cases, AISF has not yet been established in an industrial context due to some still existing process limits such as severe thinning, which strongly depends on the inclination of the part surface, as well as a limited geometric accuracy due to springback. Furthermore, there is little knowledge available about the properties of parts produced by AISF, especially in comparison to deep-drawn parts. The aim of the present paper is to compare cylindrical cups manufactured by deep-drawing and AISF regarding the resulting strain and thickness distribution. For AISF, different forming strategies were applied. Comparisons of the wall thickness and surface strain distributions show similar results for the cup produced by deep-drawing and the best cup produced by AISF, but the surface strains and the sheet thinning in the parts formed by AISF were larger than in the deep-drawn part.