过去为了加工图1所示零件的锥形密封面,我们是先在车床上锪孔,达到▽▽6以后,再用金刚砂研磨到图纸要求的光洁度。由于研磨效率低(每件要20～30分钟)、效果差、劳动强度大,后改用滚压加工,效果很好。滚压工具如图2所示,在活顶尖芯轴2的外面, In the past in order to process the conical sealing surface of the part shown in Fig. 1, we drilled the hole in the lathe to ▽ ▽ 6 and then grind to the required finish of the drawing with emery. As grinding efficiency is low (each piece to 20 to 30 minutes), the effect is poor, labor-intensive, later converted to rolling, the effect is very good. Rolling tool shown in Figure 2, outside the living mandrel 2,