PCB机械钻孔孔壁粗糙度的影响因素  

The Influencing Factors of Hole Wall Roughness

作　　者：杨海永 

机构地区：[1]汕头超声印制板公司

出　　处：《印制电路信息》2009年第S1期165-170,共6页Printed Circuit Information

摘　　要：PCB机械钻孔质量的好坏直接关系到后续电镀的品质及电子产品的可靠性,是印制板加工流程中的重要一环。PCB是由玻璃纤维、环氧树脂、铜箔所组成的复合材料,具有脆性大、各向异性、导热性差等特点,再加上目前PCB向高密度方向发展,大大加大了机械钻孔的难度,尤其对孔壁粗糙度的控制提出了严峻的挑战。本文从刀具磨损、设备状态、板件结构及加工参数等方面进行了分析总结,阐明了孔壁粗糙度的影响因素。The quality of hole wall has a close relationship with the copper quality in the following electroplating;what is worse,poor hole wall has the worst impact on the electronic reliability。Accordingly,mechanical drilling is a important process in the PCB manufacturing flow。PCB is a kind of composite material made of glass fiber、epoxy resin and copper foil,which has character of high brittleness、anisotropy and poor heat conductance。In addition,the developing trend of high density PCB, make the mechanic drilling more and more difficult,especially for the hole wall roughness control。By means of analyzing the drill bit wear、PCB structure、state of drilling machine and manufacturing parameters,this article sheds light on the influencing factors of hole wall roughness。

关 键 词：孔壁粗糙度 钻嘴磨损 板料 板件结构 切削参数 

分 类 号：TN41[电子电信—微电子学与固体电子学]