摘要
为了解决碳纤维复合材料(CFRP)钻孔加工过程中出现的撕裂、毛刺、分层等问题,以及将碳纤维复合材料更好地应用到机械制造行业中,进行了碳纤维复合材料的钻孔试验。通过实验研究了碳纤维复合材料的钻孔缺陷,分析了碳纤维复合材料钻孔加工的主要缺陷分类,以及钻削力、刀具的锋利性、钻削温度等因素对孔加工质量的影响,建立了钻削速度、进给速度与钻孔质量之间的关系;采用DM2500M金相显微镜以及KEYENCE VHX-1000三维显微系统进行了相关的试验。研究结果表明,钻孔加工缺陷出现部位呈现一定的区域性,钻孔毛刺、撕裂缺陷主要集中在出口部位,入口处几乎没有毛刺、撕裂等缺陷;随着进给速度的减小和主轴转速的增大,钻孔缺陷能够得到明显的改善;采用PCD钻头加工复合材料时宜在中、高转速下进行,高转速下钻头切削刃更易切断纤维,可以得到质量更高的钻孔。
Aiming at solving the problems of the tear, burr hole, layer in the process of carbon fiber reinforced plastics （CFRP） drilling and applying carbon fiber reinforced plastics better to the machinery manufacturing industry, drilling experiment of carbon fiber reinforced plastics was made. Through experiment, drilling defects of carbon fiber reinforced plastics were analyzed and classified. The impact of the drilling force, the sharpness of the tool, drilling temperature and other factors on drilling were analyzed. The relationship of drilling speed, feed speed and quality of drilling hole was built. DM2500M metallurgical microscope and KEYENCE VHX-1000 3D microscopy system were used in the experiment. The result indicates that arising of drilling defect is regional. Drilling tear and burr hole mainly concentrate on the exit while there is almost no in the entrance. With decreasing feed speed and increasing spindle speed, drilling defects will be dramatically improved. Therefore, it is proper to drill carbon fiber reinforced plastics using PCD bit at middle and higher speed and easier for bit to cut fiber at high speed to gain high-quality drilling hole.
出处
《机电工程》
CAS
2013年第2期182-184,196,共4页
Journal of Mechanical & Electrical Engineering
关键词
碳纤维复合材料
钻孔
缺陷
切削参数
加工质量
carbon fiber reinforced plastic（CFRP）
drilling
defect
cutting parameters
mechining quality
