Tool Load Sensitivity Against Multidimensional Process Influences in Microblanking of Copper Foils With Silicon Punches
Tool Load Sensitivity Against Multidimensional Process Influences in Microblanking of Copper Foils With Silicon Punches
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使用硅冲头对铜箔进行微冲裁时工具负载灵敏度对多维工艺影响的影响
DOI：
10.1115/1.4033522
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发表时间：
2016
影响因子：
4
通讯作者：
Merklein
中科院分区：
文献类型：
--
作者：
Hildering;Michalski;Merklein
高质量、低成本的金属微型化趋势不断发展，需要合适的生产方法。像成形和下料这样的机械制造工艺满足了这些要求。它们应用的一个主要挑战是所谓的尺寸效应。特别是，随着小型化的增加，所需制造工具的小型化和适当的定位引起了更高的努力。缩小工具规模的一个有希望的方法是从微系统技术转移知识。本文研究了蚀刻硅冲头在微冲裁中的工艺行为。特别是作为刀具材料的应用，必须考虑材料的脆性和对拉应力的敏感性。这些机械载荷有利于在冲床的刃口产生裂纹和断裂，从而降低工具寿命。在专用的试验台上，观察了铜箔微冲裁过程中的这些磨损现象。虽然在这个测试台上可以保证刀具和工件之间的高定位精度，但刀具寿命的分散是可以观察到的。因此，对微落料过程中的刀具载荷进行了有限元（FE）分析，特别考虑了拉伸应力。在三维有限元模型中，集成了凸模倾斜等多维定位误差。它们以增加拉伸应力的形式对工具负载的影响，根据定位误差的类型和大小进行了评估，并通过有关磨损的实验结果进行了验证。此外，还分析了切削刃处的小爆发对工艺行为和刀具负荷的影响。
The continuous trend toward miniaturization of metallic microparts of high quality at low costs results in the need of appropriate production methods. Mechanical manufacturing processes like forming and blanking meet these demands. One major challenge for the application of them are the so-called size effects. Especially, the downsizing of the required manufacturing tools and adequate positioning cause higher effort with increasing miniaturization. One promising approach for downsizing of tools is the transfer of knowledge from microsystems technology. This study shows the process behavior of etched silicon punches in microblanking operations. For the application as tool material especially, the brittle material behavior and sensitivity against tensile stresses have to be considered. These mechanical loads favor wear in form of cracks and breaks at the cutting edge of the punch and thus decreasing tool life. In a special test rig these wear phenomena were observed in microblanking of copper foils. Although, high positioning accuracy between tools and workpiece can be assured within this test rig, scatter of tool life is observable. Therefore, a finite element (FE) analysis of the tool load in the microblanking process with special respect to tensile stresses was performed. Within the 3D FE model multidimensional positioning errors like tilting between punch and die were integrated. Their influence on the tool load in form of increasing tensile stresses is evaluated with respect to the type and magnitude of positioning error and verified by experimental results concerning wear. Furthermore, the effect of small outbreaks at the cutting edge on the process behavior and tool load is analyzed.
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硅冲头微冲薄金属箔工艺误差对刀具载荷的影响
影响因子：
1
作者：
Hildering;Merklein
通讯作者：
Merklein
金属与金属结构
DOI：
--
发表时间：
1944
期刊：
影响因子：
--
作者：
O. Werner;W. Böhm;G. Schikorr;B. Schulze;B. Jolitz;Ina Schikorr;E. Deiß;K. Albers;E. Link;O. Jacobi;Nikolaus Ludwig;Karl Boxhammer
通讯作者：
Karl Boxhammer
使用单晶硅作为刀具材料实现薄金属箔的高精度冲裁
DOI：
10.1063/1.3589561
发表时间：
2011
期刊：
CIRP Annals
影响因子：
--
作者：
S. Hildering;U. Engel;M. Merklein
通讯作者：
M. Merklein
DOI：
10.1299/jmmp.3.397
发表时间：
2009
期刊：
Journal of Solid Mechanics and Materials Engineering
影响因子：
--
作者：
Tetsuhide Shimizu;Yushiro Murashige;K. Ito;K. Manabe
通讯作者：
Tetsuhide Shimizu;Yushiro Murashige;K. Ito;K. Manabe
影响因子：
4.1
作者：
Flosky, H.;Vollertsen, F.
通讯作者：
Vollertsen, F.