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Ultra-Fine Piercing by Ceramic Fiber Punch

陶瓷纤维冲头超细穿孔

基本信息

批准号：
11650123
负责人：
MORI Toshihiko
金额：
$ 2.3万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650123/
关键词：
plastic forming piercing ceramic fiber ultra-fine forming high performance forming stainless steel foil computer control 打抜き

项目摘要

Micro holes are necessary for sensors, filters, injection nozzle of engine, ink jet printer and so on. As the requirement of hole size becomes smaller, researches for micro hole processed by drilling, laser perforation, electro-discharge machining (EDM) and piercing have been increased. With regards to productivity and cost, piercing is preferable and widely used in mass production which includes blanking of about 100 μm thick metals for electric parts such as IC lead flame. However, further miniaturization is not expected by conventional methods because of difficulty in making punch and die and centering of them. Although micro piercing tools could be made precisely by wire electro-discharge grinding, this is still a laborious and costly process. On the other hand, one of the authors had proposed a rather simple and economic method by using ceramic fiber as a punch and confirmed that truly round and sharp-edged holes were obtained through the experiment with aluminum, beryllium copper and stainless steel foils. However, it was also found that tool life was too short to put this method into practical use. In this research, reasons for this problem were investigated and two counterplans were proposed. As the result of continuous piercing tests, improved system was effective for various metal foils.

微小孔是传感器、过滤器、发动机喷嘴、喷墨打印机等所必需的，随着对孔尺寸要求的不断减小，利用钻削、激光打孔、电火花加工、冲孔等方法加工微小孔的研究也越来越多。考虑到生产率和成本，穿孔是优选的，并且广泛用于批量生产，包括用于电子部件（例如IC引线框架）的约100 μm厚的金属的冲裁。然而，由于难以制造冲头和冲模以及使它们对中，因此通过常规方法不能期望进一步小型化。尽管微细穿孔工具可以通过电火花线磨削精确地制造，但这仍然是一个费力且昂贵的过程。另一方面，其中一位作者提出了一种相当简单和经济的方法，即使用陶瓷纤维作为冲头，并通过对铝、铍铜和不锈钢箔的实验证实，可以获得真正的圆形和边缘锋利的孔。然而，也发现工具寿命太短，无法将该方法投入实际使用。本研究探讨了造成这一问题的原因，并提出了两项对策。通过连续穿孔试验，证明了改进后的系统对各种金属箔的穿孔是有效的。