When the traditional magnetic abrasive finishing is used to polish the inner surface of the tube, the machining efficiency is low and the surface quality is poor. In order to solve this problem, a rotating mag-netic pole assisted magnetic abrasive finishing device was proposed for polishing the inner surface of SUS304 tube. The surface quality, surface micro morphology and material removal of 3 different machining modes were analyzed. The results show that the "tail" scratch phenomenon on the inner surface of the workpiece disappears after adding the rotating magnet. After 40min processing, the inner surface quality of the work-piece was improved significantly, the surface roughness value decreased from Ra1. 3μm to Ra0. 2μm, the processing efficiency was significantly improved, the material removal amount could reach 100mg.%用传统磁力研磨方法对管内表面进行抛光处理时,加工效率低且加工后表面质量差.针对该问题,文章采用旋转磁极辅助磁力研磨装置,对SUS304管内表面进行抛光试验研究.分析了3种不同加工方式下工件内表面的表面质量、表面微观形貌以及材料去除量的变化.结果表明:添加旋转辅助磁极后管内表面上无"彗尾"划痕现象,经过40 min的加工,工件内表面质量得到明显改善,表面粗糙度值由Ra1.3μm降至Ra0.2μm,加工效率显著提升,材料去除量可达到100mg.
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