中文摘要：

用传统的抛光方法很难对细长管内表面进行抛光；利用磁场控制的磁粒刷就可以较容易实现复杂管件内表面的研磨抛光。这种抛光方法是把磁性磨料和油性研磨液的混合物裹附在v形磁铁的两极，在外围磁铁的吸引下将磨料混合物压附在工件的内表面，增大磨料对内壁的研磨力，提高抛光效率。磁极端部开槽的v形磁铁在其开槽处较利于磨料的自发搅拌，使磁性磨料不断更替的对工件内表面进行抛光。通过有限元分析验证v形磁铁端部开槽对研磨压力的影响；从理论上阐述V形磁铁端部开槽后有利于实现磨料的更替，并得到较好的表面质量；最后通过对SUS304管内表面的抛光试验验证理论的正确性。

英文摘要：

It is difficult to polish the inner surface of the slender tube with traditional polishing method; using the magnetic brush controlled by magnetic fields can realize polishing the inner surface of complex tube easily. This polishing method is mixture of the magnetic abrasives and oily slurries wrapped to the magnetic pole of the V-shaped magnet, pressing the mixture onto the inner surface of the workpiece under the external magnet＇s attraction, increasing the polishing force, and improving the polishing efficiency The magnetic abrasive attached to the V-shaped magnet slotted on the end is more spontaneous mixing, and constantly turning over to polish the workpiece surface. Through finite element analysis of the V-shaped magnet slotted on the end, verified the effect on the polishing force to workpiece surface, and theoretically explained the slotted magnet can easily realize the magnetic abrasive＇s replacement to get better surface quality. Finally, the theory＇s correctness is verified by the polishing experiment to SUS304 tube.