根据碳纤维复合材料制孔过程中产生的缺陷,自主磨制专用钻头——阶梯钻对碳纤维复合材料进行钻削实验,研究了在不同加工参数下阶梯钻钻削碳纤维复合材料的钻削力、孔出口质量、孔壁表面粗糙度,并与普通麻花钻头进行对比.结果表明:阶梯钻产生的钻削轴向力是麻花钻的一半,孔壁表面粗糙度值更小,孔出口没有明显的缺陷,阶梯钻适合钻削碳纤维复合材料.%According to the defects in the process of drilling carbon fiber reinforced plastic,the drilling experiment was carried out by self-designed bit-step drill.The drilling force,hole outlet quality and hole wall surface roughness of step drill drilling carbon fiber reinforced plastic under different cutting parameters were studied and were compared with twist drill.The experimental results show that the drilling axial force produced by stepped drill is about 1/2 of the axial force produced by twist drill,the surface roughness of hole wall is smaller,and the hole exit has no obvious defects.Step drill is suitable for drilling carbon fiber reinforced plastic.
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