中文摘要：

采用HAM PCD焊刃麻花钻、KENNA CVD涂层麻花钻、金刚石套料钻（普通钻削与超声辅助钻削两种方法）三种工具对C/Si C复合材料进行了钻削试验,并对工具磨损情况、钻削力及扭矩进行了对比分析。结果表明：累计钻削深度lT=160mm后,套料钻普通钻削、超声辅助钻削磨损程度较轻,而HAM PCD焊刃麻花钻,KENNA CVD涂层麻花钻磨损严重。不同工具钻削加工时钻削力及扭矩随着工艺条件的变化呈现不同的变化趋势;采用套料钻加工时,与普通钻削相比,超声辅助钻削可有效降低钻削力及扭矩,最大降低幅度分别达到23%、56%。整体而言,套料钻超声辅助钻削加工时钻削力及扭矩较小、工具磨损较轻,是一种适合于C/Si C复合材料制孔的工艺方法。

英文摘要：

The drilling test is conducted on C/SiC composites panels with HAM PCD twist drill, KENNA CVD coating twist drill and diamond core drill （with and without ultrasonic vibration）, and then comparative analysis is carried out on tool wear, drilling force, torque and quality of hole exit. The results show that core drills wear more slightly compared with HAM PCD twist drill and KENNA CVD coating twist drill when total drilling depth reach 160 mm. Drilling force and torque present different trends along with change of tools and process parameters. When using diamond core drill ,ultrasonic assis- ted drilling （ UAD ,with ultrasonic vibration） can reduce drilling force and torque effectively in comparison to conventional drilling（ CD,without ultrasonic vibration）, and maximum decrease amplitude are 23% ,56% respectively. Generally, UAD can reduce drilling force and tool wear effectively. Thus, UAD is a kind of proper process to drilling C/SiC composites.