Hole diameter variation and roundness in dry orbital drilling of CFRP/Ti stacks

被引:43
作者
Zhou, Lan [1 ,2 ]
Ke, Yinglin [1 ]
Dong, Huiyue [1 ]
Chen, Zupeng [2 ]
Gao, Kaiye [2 ]
机构
[1] Zhejiang Univ, Coll Mech Engn, State Key Lab Fluid Power Transmiss & Control, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Coll Mech Engn, Key Lab Adv Mfg Technol Zhejiang Prov, Hangzhou 310027, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Hole diameter variation; Roundness; Orbital drilling; CFRP/Ti stacks; TOOL WEAR; PREDICTION;
D O I
10.1007/s00170-016-8528-1
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The inevitable problem of machining accuracy that follows accelerated tool wear deters severely the drilling of carbon fiber reinforced plastics/titanium (CFRP/Ti) stacks and is attributed to the cutting mechanism inherent to drilling and drill geometry. This paper develops orbital drilling of this stacked material by use of a special cutter under a dry machining condition and analyzes the characteristics of the variation in hole diameter and roundness. The influence of spindle speed for both CFRP and Ti alloy segments, and the bore and tool diameter ratio on these indexes with progressive tool wear is further studied. The experimental results show that the hole diameter at the CFRP exit always maintained the maximum value; spindle speed when machining different segments can improve or decrease these hole accuracy indexes, and the ratio of bore and tool diameter has greater influence on the roundness of the CFRP layer than that of the Ti alloy layer.
引用
收藏
页码:811 / 824
页数:14
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