The development of hybrid-feed system and technology of CFRP machining

Abstract

The main machining process for CFRP is hole drilling. Due to the composite structure and high strength of the material, the drilling process counter some major problems such as burrs, delamination and tool life. Therefore, in this study, we aim to realize a hybrid feed mechanism with constant pressure and constant speed feed. This mechanism changes the machining pressure according to the progress of machining without overloading and delamination of CFRP. In addition, by applying ultrasonic vibration, chip transportation is increased and tool friction with chips is reduced. In this paper, we developed a highly accurate CFRP processing machine is equipped with a hybrid mechanism ultrasonic vibration. The efficiency of developed processing machine is evaluated by practical experiment.