粗铝丝超声键合的尾丝控制研究

Study on Wire Tail Controlling in Heavy Aluminium Wire Bonding

针对自动粗铝丝超声楔焊键合的尾丝质量问题,剖析了键合尾丝的形成机理,建立了键合尾丝缺陷故障树,构建了键合尾丝缺陷的因果关系图,提出了尾丝缺陷现象与根源因素的影响关系矩阵,确立了尾丝质量控制的关键控制点和控制要求。

Wire tail defects exposed in ultrasonic wedge bonding on automatic heavy wire bonder were examined, and the generating mechanism of wire tail was analyzed. A wire tail fault tree was set up, a tail defects’ fishbone diagrams was built, and a relationship matrix between the phenomenon of tail wire defect and its root cause factors was proposed. The key factors and requirements of tail quality controlling were established.