摘要
PCB板厚是PCB制造过程中要严格控制的一个指标。在批量制造前,通过测量试作板的厚度,应用最小二乘法原理分析数据,在Excel或MATLAB中实现曲线拟合,得出板厚分布的估算公式,从而指导CAM的PCB拼版方式及尺寸以及压合工序的制造工艺参数选择,对保证制造后的PCB板厚均一性具有重要意义。
PCB thickness is necessary to strictly control in the manufacturing process of PCB.Before the mass-produce,the estimation formula of PCB thickness distribution is obtained through measuring the board thickness of the test board and using the least square method to analyze those data in Excel or MATLAB to achieve curve fitting,then using the formula can guide to design PCB arraying type and size in CAM process and to select the manufacturing process parameters in laminating process.This is important to ensure the uniformity of PCB thickness after manufacturing.
出处
《装备制造技术》
2010年第8期68-70,共3页
Equipment Manufacturing Technology
