Cryogenic CFRP Drilling

A total of 16 drilling experiments, based on the full-factorial combination of the 3 predictors (cutting fluid, cutting speed, and pecking), were performed on the CNC 5-axis machining center. Three through-holes were drilled in each experimental run. For each run, the measurements regarding tool wear (VB), force components (Fxy and Fz), specific cutting energy (SCE), surface roughness (Ra), hole circularity at entry and exit (Cr1 and Cr2), hole coaxiality, and process cost (PC) were performed using the aforementioned measuring instruments.

本研究在五轴数控（CNC）加工中心上完成了共计16组钻孔实验，实验基于切削液、切削速度与啄钻3个预测因子的全因子组合设计。每组实验均钻制3个通孔。针对每组实验，采用前述测量仪器完成了刀具磨损（VB）、切削分力（Fxy与Fz）、比切削能（SCE）、表面粗糙度（Ra）、孔入口与出口处的圆度（Cr1与Cr2）、孔同轴度以及加工成本（PC）等指标的测量。