Single Point Micro Incremental Forming of Miniature Shell Structures
Single Point Micro Incremental Forming of Miniature Shell Structures
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DOI：
10.1299/jamdsm.4.543
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发表时间：
2010-01-01
影响因子：
0.9
通讯作者：
Obikawa, Toshiyuki
中科院分区：
文献类型：
--
作者：
Sekine, Tsutomu;Obikawa, Toshiyuki
本文主要研究了单点微增量成形技术在微壳制品中尺度成形中的应用。在本研究中，我们新建了一台台式数控成型机作为实验设备。以厚度为12 μ m的薄铝箔和半径为100 μ m的薄圆尖棒分别作为毛坯和成形工具。在不使用任何模具和垫板的情况下，形成了一些基本的和复杂的壳结构，以研究SPMIF工艺的特性。通过对多边形锥体成形过程中接触区域的分析，证实了再接触面积的大小对多边形锥体边缘断口的影响很大，这决定了SPMIF的成形极限。通过本研究建立的SPMIF工艺，可以通过精心设计的刀具轨迹完成复杂的壳体结构。
This study focuses on single point micro incremental forming (SPMIF) applied to the forming of miniature shell products in meso-scale. For this study, a desk-top type of CNC forming machine was newly constructed as an experimental apparatus. A thin aluminum foil with a thickness of 12 mu m and a thin round-tip bar with a radius of 100 mu m were utilized as a blank and a forming tool, respectively. Some fundamental and complex shell structures were formed for investigating the characteristics of the SPMIF process without using any die and backing plate. The analysis of contact region in forming polygonal pyramids confirmed that fracture on an edge of a polygonal pyramid, which determined the forming limit of SPMIF, was strongly affected by the size of re-contact area. Through the SPMIF process established in this study, complex shell structures were accomplished with elaborate tool paths.