A method of ultrasonic vibration drilling was presented to the hole-making of metal matrix composites based on fundamental analysis of vibration machining. In virtue of the self-developed ultrasonic drilling equipment, experiments of common and ultrasonic vibration drilling were performed on SiC particle reinforced aluminum-matrix composites（SiCp/Al）

with different contents of SiC by using two types of tungsten carbide drill. Cutting characteristics of machining composites with ultrasonic vibration were analyzed from such respects as the composites crush, drilling force, drill wear and hole surface quality. Results show that, during the ultrasonic vibration drilling process, drilling locating precision and surface quality of holes can be enhanced, wear of the drill chisel edge can be effectively improved, and the drilling torque can be reduced about 30%.

在分析振动切削基本原理的基础上，采用了超声振动钻削的方法对金属基复合材料进行孔加工。借助自行研制的超声钻削设备，通过使用不同材质的硬质合金麻花钻，对两种不同含量的SiC颗粒增强铝基复合材料进行了普通钻削与超声振动钻削的对比试验。从复合材料的破碎形式、超声振动钻削力、钻头磨损以及孔的加工质量等4个方面对超声振动钻削复合材料的特性进行了研究。结果表明，轴向超声振动钻削能够提高入钻的定位精度及孔的表面质量，有效地改善钻头横刃的磨损，同时，钻削扭矩较普通钻削降低约30%。

超声振动, 钻削, 复合材料, 切削特性