A Study of Titanium Drilling Process Using Sound and Cutting Force Signals

Titanium material is widely used in the industrial world such as the aerospace industry, military industry, and biomedical. The properties of this material are high strength and modulus of elasticity, low density, and lightweight. In fact, there are still many obstacles in carrying out the drilling process on titanium material, especially holes with a diameter smaller than 3 mm. Chisel thirst will be one of the considerations in carrying out this drilling process. The purpose of the study was to analyze the effect of tool wear conditions considering the cutting force and the sound produced and the quality of the holes in the Titanium Ti-6Al-7Nb drilling process. The cutting force and sound characteristics were successfully identified based on the signal that was processed from analog data to digital using signal processing software and MATLAB. The study results show a correlation between drill tool wear and machining variables in the drilling process based on the characteristics of the cutting force signal and sound. In addition, the sound signal has been able to significantly recognize the appearance of burrs. The analysis connecting the cutting force signals and the sound signal has made an impression on the grinding process of this titanium material. The findings of this study can be continued for real-time monitoring based on various machining conditions.