The effect of pilot hole on delamination when core drill drilling composite materials
The effect of pilot hole on delamination when core drill drilling composite materials
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DOI：
10.1016/j.ijmachtools.2005.08.015
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发表时间：
2006-10-01
影响因子：
14
通讯作者：
Tsao, C. C.
中科院分区：
文献类型：
--
作者：
Tsao, C. C.
岩心钻机钻削聚合物复合材料时，排屑是一个严重的问题。当切屑形成时，它向空心钻的内孔移动。预钻孔以消除由去除切屑引起的推力，从而显著降低分层的威胁。预钻孔的直径设置为与岩心钻的内孔直径相等。较小的导向孔直径不能解决排屑问题，而较大的导向孔直径往往会在预钻孔过程中引起不希望的分层。尽管人们在分析钻孔引起的分层方面做了大量的工作，但是关于导向孔直径对空心钻分层的影响的报道很少。利用所得结果可以改进钻具的设计。(C)2005爱思唯尔有限公司保留所有权利。
Removal of chips is a serious problem when core drill drilling polymer composites. As the chip is formed it moves to the inner hole of core drill. A hole is pre-drilled to eliminate the thrust caused by the removal chip, thus the threat for delamination is significantly reduced. The diameter of the pre-drilled hole is set equal to the inner hole of core drill. A smaller diameter of pilot hole cannot solve the problem of removal chips, while a larger one tends to cause undesired delamination during pre-drilling. Although valuable efforts have been made for the analysis of drilling-induced delamination, little has been reported on the effect of pilot hole diameter on delamination for core drills. The design of drill tools can be improved using obtained results. (C) 2005 Elsevier Ltd. All rights reserved.