碳纤维增强复合材料钻孔加工中刀具磨损试验研究

Wear Experiment of Twist Drill Inhole Machining of CFRP

碳纤维增强复合材料属于典型的难加工材料。钻孔加工过程中,钻头磨损严重,影响CFRP的表面质量,降低加工效率,需要降低钻孔过程中刀具的磨损。通过使用2种不同材质的钻头钻削CFRP,研究钻头材质对刀具磨损值、钻削轴向力的影响,得到:钻头主要磨损形式为磨粒磨损、粘着磨损、崩刃;PCD钻头的加工效率和耐磨性远高于硬质合金钻头。

CFRP is a typical difficult mate- rial to machine. In the drilling process, the drill gets wear badly, which affects the surface quality of CFRP, decreases the processing efficiency and raises the processing cost. It is necessary to reduce the tool wear during the drilling. This paper introduces the influence among the material of the drill, the wear value of the drill and the thrust force of drilling by drilling the CFRP with two different drills. The experiment demonstrates that the wear forms include the abrasive wear, adhesive wear, tipping; it also proves that PCD tool has more advantage than the cemented carbide ＂YG6X＂ while drilling CFRE