Wear behaviors of PCD and diamond-coated tools during low-frequency vibration-assisted drilling CFRP/Ti stacks

Carbon fiber–reinforced polymer (CFRP) and titanium alloy stacks play a significant role in the aerospace field to improve the mechanical properties of assembly components. Low-frequency vibration-assisted drilling (LFVAD) can realize the periodic contact and separation characteristic between tool a...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2023-09, Vol.128 (1-2), p.595-609
Main Authors: Chen, Dexiong, Lin, Hai, Chen, Yan, Yan, Chaoren, Xu, Jiuhua
Format: Article
Language:English
Subjects:
Adhesion
CAE) and Design
Carbon fiber reinforced plastics
Computer-Aided Engineering (CAD
Cutting force
Diamond drills
Diamond films
Diamond machining
Diamond tools
Drilling
Engineering
Industrial and Production Engineering
Machinability
Mechanical Engineering
Mechanical properties
Media Management
Original Article
Polycrystalline diamond
Stacks
Titanium alloys
Titanium base alloys
Tool wear
Vibration
Workpieces
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Summary:Carbon fiber–reinforced polymer (CFRP) and titanium alloy stacks play a significant role in the aerospace field to improve the mechanical properties of assembly components. Low-frequency vibration-assisted drilling (LFVAD) can realize the periodic contact and separation characteristic between tool and workpiece, thus pose a high potential for manipulating the machinability of CFRP/Ti stacks. In the present study, two types of drilling tools (polycrystalline diamond (PCD) tool and diamond-coated tool) are adopted, and tool wear behaviors are deeply evaluated during drilling CFRP/Ti stacks. Meanwhile, the specific influences of tool wear on the drilling performances are comprehensively analyzed under the LFVAD with minimum quantity lubrication (MQL). The results show that Ti-adhesion is observed for both drilling tools. Meanwhile, edge fracture is the key wear mode dominating for the PCD tool, and coating peeling is the main wear mode for the diamond-coated tool, with less Ti-adhesion. In addition, with the increasing number of drilled holes, the diamond-coated tool demonstrates better drilling performances with lower cutting force, better hole quality, and more hole-making number. The findings of this paper can contribute to providing a guidance for tool optimal selection in low-frequency vibration-assisted drilling of CFRP/Ti stacks with MQL.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-023-11899-9