中文摘要：

针对GH4169镍基高温合金和5A06铝镁合金切削加工困难,以及已加工表面质量和加工精度要求高等难题,从切削原理及加工工艺入手,采用超声振动方法设计超声振动车削加工系统.利用该加工系统对GH4169和5A06两种合金材料做超声振动车削与普通车削的对比试验.结果表明：超声振动辅助车削高温合金和铝镁合金中工艺参数对已加工工件的表面粗糙度、表面形貌和切屑形态影响明显,合理选择各工艺参数能够有效地改善加工质量,使得超声振动车削的加工效果明显好于普通车削.

英文摘要：

For the machinability difficulty of GH4169 Ni-based superalloy and 5A06 Al-Mg alloy as well as the high demands of machined surface quality and machining precision,the ultrasonic vibration assisted turning machining system was designed utilizing the method of ultrasonic vibration,which proceeded with cutting principle and machining technology. The contrast test was conducted to compare ultrasonic vibration assisted turning with conventional turning for these two alloy materials. The results indicate that the technological parameters have obvious effect on the surface roughness, surface topography and chip morphology of machined workpiece when ultrasonic vibration assisted turning of Ni-based superalloy and Al-Mg alloy is conducted.Choosing reasonable technological parameters can promote efficiently the processing quality,and enable the machining effects of ultrasonic vibration assisted turning to be superior to that of conventional turning.