V-cut线过PTH产生铜披锋问题的研究

摘要

This paper analyzed the causes and improvements of PTH burrs caused by V-cut in PCB routing combined with speciifc production instances. By optimizing the production process, adding in the 2th drilling before etching to remove parts of PTH copper in the entrance of V-cut line and rationally designing the 2th drilling tape, the PTH burr problem was effectively improved.%文章结合具体生产实例，对成型V-cut线过PTH孔铜披锋产生的原因及改善措施进行了分析研究。通过优化生产流程，蚀刻前增加“二钻”除去V-cut进口处PTH孔壁部分铜层，同时合理设计二钻钻带，使V-cut时不撞到孔铜，有效改善了孔铜披锋问题。