Theoretical Modeling and Experimental Verification of Rotating Ultrasonic Drilling

Abstract

Aiming at the problems of large drilling ability and serious wear of drill bit tool in the process of drilling, the connecting plate workpiece in the high strength engineering mechanical connection parts of carbon fiber reinforced composites is studied, and the theoretical model of ultrasonic drilling is established, and the simulation analysis is carried out by using the professional numerical calculation software MATLAB. The influence of the main parameters such as tool feed speed, spindle angular velocity and ultrasonic amplitude on the drilling force during ultrasonic drilling is studied, and the relevant parameters under the same working conditions of simulation are verified by experimental method. The simulation and experimental results show that with the increase of tool feed speed, the drilling force shows the trend of increasing gradually, and with the increase of spindle angular velocity and ultrasonic amplitude, the drilling force shows a decreasing trend, and the simulation value of maximum drilling force under different parameters is basically close to the experimental value, which verifies the correctness of the theoretical model. It provides theoretical basis and important reference for the improvement of the comprehensive performance and product quality of the ultrasonic drilling parts of carbon fiber reinforced composites, the popularization and application of the theoretical model of ultrasonic drilling, the optimization of ultrasonic drilling process parameters, and the ultrasonic processing and molding of composite materials.