摘要
高速切削技术一直以来都是提高生产效率和节约成本的关键技术。碳纤维复合材料以其耐磨性、耐腐蚀性等一系列优点倍受人们的青睐。研究了碳纤维复合材料在高速钻削过程中切削速度、进给速度和钻头刀尖角对钻削入口分层的影响;利用三水平的全因子分析法进行钻削试验,同时将得到的分层因子建立二元非线性回归模型,并进行方差分析和响应面分析。研究结果表明:分层对进给速度的敏感性更强;随着切削速度的提高,分层因子逐渐减小;小的刀尖角更有助于获得好的加工孔质量。所构造回归模型的预测结果与试验结果基本一致,表明该模型可以有效地预测钻削表面的分层状况。
High-speed machining is acknowledged to be one of the key manufacturing technologies to ensure the high productivity and save cost. Carbon Fiber Reinforced Plastic （CFRP） materials have a series of advantages such as corrosion resistance and are widely used in industries. The effects of cutting speed, feed rate and tool geometry on entrance delamination during high speed drilling of CFRP materials are presented. The drilling experiments were performed based on full factorial design of experiments with three levels defined for each of the process parameters. The data of delamination factor are empirically related to process pa- rameters by developing a second order nonlinear regression model based on Analysis of Variance （ANOVA）and Response Surface Methodology（RSM）. The investigations showed that delamination is more sensitive to the feed rate, delamination decreases with increase in cutting speed, and smaller tool apex angle helps to get better quality of machined hole. The regression model to predict the delamination factor is consistent with the experimental results, and it can effectively predict the entrance delamination changes.
出处
《现代制造工程》
CSCD
北大核心
2015年第2期12-17,共6页
Modern Manufacturing Engineering
基金
国家自然科学基金资助项目(51075074)
福建省自然科学基金资助项目(2013J01262)
关键词
碳纤维复合材料
高速钻削
孔入口分层
方差分析
carbon fiber reinforced plastics materials
high speed drilling
entrance delamination
ANOVA
