采用硬质合金麻花钻对CFRP-TC4叠层板进行钻削试验,分析了钛合金层加工参数对钻削力、钻削温度和加工孔质量的影响.结果表明:随着转速的增加,钛合金层的轴向力逐渐减小;随着钛合金层进给量的增加,钛合金层与CFRP层的轴向力之比逐渐增加.运用指数公式模型对钛合金层轴向力实验结果进行回归分析,得到轴向力与转速以及进给量之间的关系式:Fz=2 088n-01222 ·fr.2016,并对该方程进行了检验验证,误差均小于10％;在钛合金层进给量不变时,随着钛合金层转速的增加,CFRP的最大烧伤环直径和层间最高温度逐渐增加.
Using carbide twist drills,the influence of machining parameters on cutting force,cutting temperature and hole quality of titanium alloy have been analyzed.The results show that with the increase of speed,axial force of the titanium alloy layer decreases gradually,and with the increase of feed,the specific value axial force of CFRP/titanium alloy layer ratio increase gradually.The exponential formula models of drilling force were obtained through regression analysis method and the regulation of the drilling force influenced by the feed and cutting speed was obtained respectively,Fz =2 088n-0.1222 ·fr0.2016.The error of the two equations have been tested both less than 10％.When the feed is constant on titanium alloy layer,with the increase of speed on titanium alloy layer,the maximum discoloration ring diameter and the highest interpass temperature of CFRP increased gradually.
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