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).
Bibliographical noteFunding Information:
This work was supported by the Technology Innovation Program ( 20012834 , Development of Smart CNC Control System Technology for Manufacturing Equipment) funded by the Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea.
© 2021 The Society of Manufacturing Engineers
All Science Journal Classification (ASJC) codes
- Strategy and Management
- Management Science and Operations Research
- Industrial and Manufacturing Engineering