Solutions of Micro Drilling and Routing for Halogen-free and Lead-free Assembly Compatible PCBs
The successful developments of halogen-free and lead-free assembly compatible (environment-friendly) PCBs are two great progresses of worldwide PCB industry. New type of micro drill bit and router bit are developed to provide solutions for processing these environment-friendly PCBs. A brief introduction is presented first to cover the background, the objective and the methodology of this study. Then the challenges of micro drilling and routing for halogen-free and lead-free assembly compatible PCBs are described. The influential mechanism of key parameters of drill/router bits on their performances is investigated. Design examples of drill bit and router bit with excellent overall performances are presented. The recommendations of drilling and routing parameters for environment-friendly PCBs are considered. Experimental results confirm that a micro drill bit with small helix angle and optimized helix groove shape is beneficial to drilling environment-friendly PCBs. Furthermore, the presented router bit is an appropriate candidate for routing environment-friendly PCBs as the life of router bits is significantly increased and the peripheral quality is satisfactory.
Fu Lianyu Yang Fan
Shenzhen Jinzhou Precision Technology Corp Shenzhen,China,518116
国际会议
上海
英文
2008-03-17（万方平台首次上网日期，不代表论文的发表时间）