High-efficiency ultrasonic assisted drilling of CFRP/Ti stacks under non-separation type and dry conditions  

作　　者：Enze YING Zehua ZHOU Daxi GENG Zhenyu SHAO Zhefei SUN Yihang LIU Lianxing LIU Xinggang JIANG Deyuan ZHANG 

机构地区：[1]School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China [2]Beijing Chenjing Electronics Company Limited,Beijing 100015,China [3]Aerospace Times Feihong Technology Company Limited,Beijing 100094,China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2024年第4期275-291,共17页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：supported by the National Natural Science Foundation of China(Nos.52375399 and 91960203);the Aeronautical Science Foundation of China(No.2022Z045051001).

摘　　要：In this study,to address the low efficiency for conventional ultrasonic-assisted drlling(UAD)of carbon fiber-reinforced plastic and titanium alloy(CFRP/Ti)stacks,feasibility experiments of non-separation UAD,in which continuous cutting between the tool and the workpiece occurs at a high feed rate,are carried out.The experimental results indicate that,compared to conventional separation UAD,the non-separation UAD effectively reduces the cutting forces by 24.2%and 1.9%for CFRP stage and 22.1%and 2.6%for the Ti stage at the feed rates of 50 and 70μm/r,respectively.Furthermore,the non-separation UAD significantly improves hole quality,including higher hole diameter accuracy,lower hole surface roughness,and less hole damage.In addition,the non-separation UAD can decrease adhesive tool wear.This study demonstrates that,compared to conventional drilling(CD),the non-separation UAD can effectively improve drilling quality and tool life while maintaining high efficiency.

关 键 词：Carbon fiber-reinforced plastic and titanium alloy(CFRP/Ti)stacks Ultrasonic-assisted drlling(UAD) Cutting force Surface integrity Tool wear 

分 类 号：TU751[建筑科学—建筑技术科学]