【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.更多还原

【Abstract】 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 0.357 μm 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.更多还原