中文：图纸解读与配刀方案
本文围绕 G10 FR-4 composite fixture plate CNC hole quality dust diamond tooling 展开。零件特征包括a flat reference face, dense dowel-hole pattern, counterbores, clearance holes, routed perimeter and edge chamfers。文章重点不是泛泛介绍 CNC 加工，而是把图纸要求转化为夹具、配刀、参数、工序和检测方案。
建议以the flat reference face and dowel-hole coordinate system作为核心基准，夹具方案为：support the full sheet on a sacrificial vacuum fixture, add perimeter stops and keep tabs until the final contour pass。配刀可采用：a compression-style diamond-coated router, sharp carbide drills, selected reamers, a flat counterbore cutter and a light chamfer tool。粗加工、半精加工和精加工应分开，关键尺寸在零件刚性最稳定的状态下完成。检测应确认datum-to-hole coordinates, pin-gauge fit, counterbore depth, entry and exit breakout, dust removal and final flatness，并重点关注毛刺、变形、刀具磨损和重复装夹误差。
