提高球磨机的质量,进出口处轴颈是关键零件,其粗糙度一般要求在Ra1.6以上。对于直径在φ1500以下的球磨机,其进出口轴颈大都采用HT20-40材料制造,要求轴颈粗糙度Ra1.6以下是困难的。目前、一般工厂都采用W18Cr4V宽刃(150～200mm)刀具精车或砂带磨削、这种宽刃刀具制造困难,效率低、成本高。为此,我们经过多次反复试验,在 Improve the quality of ball mill, import and export of the journal is the key part, the roughness of the general requirements in Ra1.6 above. For diameter below φ1500 ball mill, the majority of their import and export journal HT20-40 material used to require the journal roughness Ra1.6 the following is difficult. At present, the general factory uses W18Cr4V wide blade (150 ~ 200mm) tool fine car or belt grinding, this wide-edged blade manufacturing difficulties, low efficiency and high cost. To this end, we have repeatedly tested it