超声磁粒复合研磨技术  

Ultrasonic magnetic abrasive finishing technology

作　　者：芦亚萍[1] 马季[2] 张军强[2] 何丽鹏[2] 

机构地区：[1]宁波工程学院机械工程学院,浙江宁波315016 [2]吉林大学机械科学与工程学院,吉林长春130022

出　　处：《煤炭学报》2007年第5期552-556,共5页Journal of China Coal Society

基　　金：宁波市工业科研攻关项目(2005B100058)

摘　　要：提出将超声振动附加于磁粒研磨过程中的思想.通过分析传统磁粒研磨材料去除数学模型,揭示了提高磨刷切削能力是提高磁粒研磨效率的关键.以超声振动理论和磁场理论为基础设计了一套超声磁粒复合研磨实验系统,实验证明,在单纯磁粒研磨显示磨粒失效的情况下,超声磁粒复合研磨可以使表面粗糙度平均下降0.357μm.最后对实验结果进行了分析,得出功率大小适当的超声振动可以促进磨粒刃口自锐,工作磨粒及时更新,从而提高磨刷切削能力等结论.Put forward a new kind of polishing method which compounded ultrasonic vibration with magnetic abrasive finishing （MAF） process. By analyzing the mathematics cutting model of traditional MAF, it is found that increasing the cutting ability of the magnetic abrasive brush is the key to improve the efficiency of MAF. An experimental system, based on the magnetic field theory and the ultrasonic vibrancy theory, was designed, and the experiments show that the average roughness value of the surface by compound-finishing is 0. 357μm lower than that by simple-finishing when the brush is used up in the traditional MAF. At last, the conclusion is got that proper ultrasonic vibration can enhance the efficiency of the normal MAF due to the ultrasonic vibration can make the grain flow more frequently and then refresh the milling-grain on-working and sharpen the grain＇ s blade.

关 键 词：超声振动 磁粒 复合研磨 磁力研磨 模具 

分 类 号：TG669[金属学及工艺—金属切削加工及机床]