摘要
使用超声振动辅助铣削和普通铣削两种方式对7075铝合金进行加工,分别以转速、振幅、每齿进给量为变量设计单因素实验,使用超景深测试仪、白光衍射仪观测加工表面的形貌,对比不同加工方式和不同参数下工件表面的粗糙度值和微观形貌,对产生该形貌的原因以及该形貌的特征进行分析。实验表明:在相同转速和进给量条件下,使用较小超声振幅加工的工件,其表面粗糙度值低于普通铣削方式;超声振动辅助铣削方式会使工件表面产生均匀、整齐的鳞状网格结构;加工参数不同,造成表面形貌产生明显的差异。
The 7075 aluminum alloy is processed by ultrasonic vibration milling and ordinary milling.Single factor experiments are designed with variable speed,amplitude and feed per tooth as variables.The super-depth of field tester and white light diffractometer are used to observe the morphology of the machined surface,and the roughness and micromorphology of the workpiece surface under different processing methods and different parameters are compared.The causes of the morphology and the characteristics of the morphology are analyzed.Experiments show that under the same speed and feed rate,the workpiece with smaller ultrasonic amplitude processing has lower surface roughness than ordinary milling.Ultrasonic vibration milling results in a uniform,tidy scaly mesh structure on the workpiece surface.Different processing parameters result in significant differences in surface morphology.
作者
刘建慧
张璐
涂远洋
王鑫
LIU Jianhui;ZHANG Lu;TU Yuanyang;WANG Xin(School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China)
出处
《机械工程师》
2018年第12期6-9,共4页
Mechanical Engineer
关键词
表面形貌
粗糙度
超声铣削
surface morphology
roughness
ultrasonic milling
