CFRTP materials shows ductile behavior in a drilling process in contrast with CFRP with thermosetting resin, and it causes a problem of large burr remaining at the drilled hole end using a conventional twist drill. In order to prevent large burr growing, we have proposed “a step drill” that distributes the cutting force for the work plate in drilling.
Effect(s)
Improvement of the drilled hole quality of a CFRTP material (burr reduction)
New Technology
Technology Deployment and Cooperation
Development Stage
Development Stage
(to be completed in 2014/3; progress: 100%)
Intellectual Property Right
None
Joint Researchers (their role)
Example of Application
Drilling process of CFRTP molding parts
Technical Problems
Evaluation of the tool life, and extension of tool life