Al_2O_3基陶瓷刀具材料的超声波加工技术研究

UITRASONIC VIBRATION MACHINING OF ALUMINA-BASED CERAMIC CUTTING TOOL MATERIALS

本文采用超声波加工技术对四种Al2O3基陶瓷刀具材料表面定位方孔进行加工，研究了其加工机理和材料组分对不同陶瓷材料加工效率、加工表面粗糙度的影响。试验结果表明：在同样的加工条件下，材料去除率和加工表面粗糙度的大小顺序为：Al2O3／TiC＞Al2O3／TiB3＞Al2O3／TiB2／SiCw＞Al2O3／SiCw。陶瓷材料的断裂韧性越高，其材料去除率越低，加工表面粗糙度越小。

In this paper, ultrasonic vibration machining was used to machine alumina based ceramic cutting tool materials, ie, Al2O3/SiCw、Al2O3/TiB2/SiCw、Al2O3 and Al2O3/TiC ceramic cutting tool materials. Results showed that this machining technique can be applied to machine this materials with high surface integrity. The principle of this machining processes is described. The effect of material compositions on the machining efficiency and the surface roughness is also discussed.