Simulation and Experimental Study on Axial Force Adaptive Control in CFRP Hole-making Process
The axial force of drilling is closely related to the quality of CFRP hole-making.In order to reasonably control the axial force to reduce hole-making defects,the simulation and experimental study on the axial force adaptive control in CFRP hole-making process were carried out.Firstly,the axial force and hole-making quality were quantitatively studied through CFRP drilling experiments.Secondly,a three-stage axial force model was established by considering the different machining characteristics of CFRP in the drilling entry stage,steady drilling stage and drilling out stage.Finally,the simulation and experimental study on the axial force adaptive control was carried out based on the three-stage model and fuzzy logic.The results show that it is feasible to control the axial force intelligently by using the fuzzy logic control algorithm and combining with CFRP processing characteristics.In addition,adjusting the axial force according to the simulation information can effectively reduce the hole-making defects and improve the hole wall quality.It provides a new idea for intelligent control of axial force in hole-making process of large thickness carbon fiber composites.
CFRP hole-makingdelaminationsimulationfuzzy control