Experiment on high and low frequency compound vibration-assisted drilling of CFRP/titanium alloy laminated structure

LI Yuanxiao; JIAO Feng; ZHANG Shijie; ZHANG Shun; WANG Xue; TONG Jinglin

doi:10.7527/S1000-6893.2020.24802

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2021 , Vol. 42 >Issue 10: 524802 - 524802

DOI: https://doi.org/10.7527/S1000-6893.2020.24802

Article

Experiment on high and low frequency compound vibration-assisted drilling of CFRP/titanium alloy laminated structure

LI Yuanxiao ,
JIAO Feng ,
ZHANG Shijie ,
ZHANG Shun ,
WANG Xue ,
TONG Jinglin

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School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China

Received date: 2020-09-29

Revised date: 2020-10-28

Online published: 2020-12-14

Supported by

National Natural Science Foundation of China (51675164)

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Abstract

To overcome the problems of high cutting temperature and poor machining quality in the traditional drilling process of Carbon Fiber Reinforced Plastic (CFRP) and titanium alloy laminated structure, this paper proposes a processing method of high and low frequency compound vibration-assisted drilling of CFRP/titanium alloy laminated structure-assisted drilling based on the respective advantages of these two drilling methods. The self-developed high and low frequency compound vibration-assisted drilling device is used to carry out the drilling experiment of CFRP/titanium alloy laminated structure. The cutting force, titanium alloy chip morphology, cutting temperature and the hole processing quality of CFRP in four drilling modes (conventional drilling, ultrasonic vibration drilling, low frequency vibration drilling, and high and low frequency compound vibration-assisted drilling) are compared. The results show that among the four processing methods, in the high and low frequency compound vibration-assisted drilling, the thrust force fluctuation is relatively large, the cutting temperature is significantly reduced, the titanium alloy chips are discontinuous fan-shaped and the overall size is the smallest, and the damage degree of CFRP hole entrance and exit and surface is the lowest, demonstrating significant improvement of the machining quality. This study can provide guidance for the integrated drilling of laminated composite structure.

Key words： Carbon Fiber Reinforced Plastic (CFRP); titanium alloy; laminated structure; low frequency vibration drilling; ultrasonic vibration drilling; high and low frequency compound vibration-assisted drilling

Cite this article

LI Yuanxiao , JIAO Feng , ZHANG Shijie , ZHANG Shun , WANG Xue , TONG Jinglin . Experiment on high and low frequency compound vibration-assisted drilling of CFRP/titanium alloy laminated structure[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021 , 42(10) : 524802 -524802 . DOI: 10.7527/S1000-6893.2020.24802

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