ABSTRACT

The main test equipment for ultrasonic-assisted drilling is the Ultrasonic 65 device in the WMG hightech equipment machining center. The other test equipment includes the YE5850 charge amplifier,

1 INTRODUCTION

The carbon fiber-reinforced composite material has the advantages of light weight, high strength, high temperature resistance, corrosion resistance, good fatigue resistance, and good anti-vibration performance and mechanical properties. It has been widely used in military, aerospace, engineering machinery, automotive, and other fields (Xun Liu, 2016 & Liu Yang, 2015). With an increase in the high strength and good performance requirements on the connection components of engineering machinery, the new composite difficulty processing materials has been widely used in high-strength connection components of engineering machinery (Ren Shunan, 2013 & Jinyang Xu, 2016). Because the carbon fiber material has a unique high hardness and high strength, which make it more difficult to process, the carbon fiber material has the performance characteristics of long heating time, long processing time, strong axial force and big torque, and easy to cause tool wear (Julian M, 2015 & Shivraman Thapliyal, 2016). The wear of the drilling tool will lead to problems such as tearing, fluffing, roughness, and delamination in hole-drilling. At the same time, the drill tool will be scrapped too quickly, the efficiency will be low, and the economic cost will be high (Jun Cheng, 2015). In view of these problems, many scholars put forward the ultrasonic vibration-assisted method to process the material, and some scholars have carried out the corresponding experimental study. Jing Liu (2012) believes that the effect of RUEM can be beneficial to improve the cutting

A/D converter, and computer. The measurement equipments of the drilling tool’s wear include the stereomicroscope, the image scale software called Image Measure, and the JEOLJSM-6380 LV scanning electron microscope.