Effect of workpiece preheating on tool wear and delamination at the hole exit in high feed drilling of carbon fiber reinforced plastics with diamond-coated tools. (February 2022)

• Record Type: Journal Article
• Authors: Kim, Gyuho; Kim, Tae-Gon; Lee, Seok-Woo; Min, Byung-Kwon
• Is Part Of: Journal of manufacturing processes. Volume 74(2022)
• Page Start: 233
• Page End: 243
• Publication Date: 2022-02
• Subjects: Composite machining -- Diamond tool wear -- Cutting tools -- Thermal effects; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2021.12.013
• Languages: English
• ISSNs: 1526-6125

Abstract

Abstract: High feed drilling of carbon fiber reinforced plastics (CFRP) poses a risk of serious tool wear and delamination caused by high drilling thrust force despite improving productivity. However, by taking advantage of the proper thermal softening of the epoxy matrix in CFRP, a decrease in forces related to tool wear and delamination is achievable under high feed. Through this study, thermal softening of epoxy matrix by preheating was effective in reducing thrust force and tool wear in the drilling of CFRP with diamond-coated tools. Hole exit delamination factors decreased by adjusting workpiece temperature to the proper value using a developed preheating system under high feed (0.2 mm/rev).